clients/window.c

   1 /*
   2  * Copyright © 2008 Kristian Høgsberg
   3  * Copyright © 2012-2013 Collabora, Ltd.
   4  *
   5  * Permission to use, copy, modify, distribute, and sell this software and its
   6  * documentation for any purpose is hereby granted without fee, provided that
   7  * the above copyright notice appear in all copies and that both that copyright
   8  * notice and this permission notice appear in supporting documentation, and
   9  * that the name of the copyright holders not be used in advertising or
  10  * publicity pertaining to distribution of the software without specific,
  11  * written prior permission.  The copyright holders make no representations
  12  * about the suitability of this software for any purpose.  It is provided "as
  13  * is" without express or implied warranty.
  14  *
  15  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  16  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  17  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  18  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  19  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  20  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  21  * OF THIS SOFTWARE.
  22  */
  23
  24 #include "config.h"
  25
  26 #include <stdint.h>
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <stdarg.h>
  30 #include <string.h>
  31 #include <fcntl.h>
  32 #include <unistd.h>
  33 #include <errno.h>
  34 #include <math.h>
  35 #include <assert.h>
  36 #include <time.h>
  37 #include <cairo.h>
  38 #include <sys/mman.h>
  39 #include <sys/epoll.h>
  40 #include <sys/timerfd.h>
  41
  42 #ifdef HAVE_CAIRO_EGL
  43 #include <wayland-egl.h>
  44
  45 #ifdef USE_CAIRO_GLESV2
  46 #include <GLES2/gl2.h>
  47 #include <GLES2/gl2ext.h>
  48 #else
  49 #include <GL/gl.h>
  50 #endif
  51 #include <EGL/egl.h>
  52 #include <EGL/eglext.h>
  53
  54 #include <cairo-gl.h>
  55 #else /* HAVE_CAIRO_EGL */
  56 typedef void *EGLDisplay;
  57 typedef void *EGLConfig;
  58 typedef void *EGLContext;
  59 #define EGL_NO_DISPLAY ((EGLDisplay)0)
  60 #endif /* no HAVE_CAIRO_EGL */
  61
  62 #include <xkbcommon/xkbcommon.h>
  63 #include <wayland-cursor.h>
  64
  65 #include <linux/input.h>
  66 #include <wayland-client.h>
  67 #include "../shared/cairo-util.h"
  68 #include "xdg-shell-client-protocol.h"
  69 #include "text-cursor-position-client-protocol.h"
  70 #include "workspaces-client-protocol.h"
  71 #include "../shared/os-compatibility.h"
  72
  73 #include "window.h"
  74
  75 struct shm_pool;
  76
  77 struct global {
  78         uint32_t name;
  79         char *interface;
  80         uint32_t version;
  81         struct wl_list link;
  82 };
  83
  84 struct display {
  85         struct wl_display *display;
  86         struct wl_registry *registry;
  87         struct wl_compositor *compositor;
  88         struct wl_subcompositor *subcompositor;
  89         struct wl_shm *shm;
  90         struct wl_data_device_manager *data_device_manager;
  91         struct text_cursor_position *text_cursor_position;
  92         struct workspace_manager *workspace_manager;
  93         struct xdg_shell *xdg_shell;
  94         EGLDisplay dpy;
  95         EGLConfig argb_config;
  96         EGLContext argb_ctx;
  97         cairo_device_t *argb_device;
  98         uint32_t serial;
  99
 100         int display_fd;
 101         uint32_t display_fd_events;
 102         struct task display_task;
 103
 104         int epoll_fd;
 105         struct wl_list deferred_list;
 106
 107         int running;
 108
 109         struct wl_list global_list;
 110         struct wl_list window_list;
 111         struct wl_list input_list;
 112         struct wl_list output_list;
 113
 114         struct theme *theme;
 115
 116         struct wl_cursor_theme *cursor_theme;
 117         struct wl_cursor **cursors;
 118
 119         display_output_handler_t output_configure_handler;
 120         display_global_handler_t global_handler;
 121         display_global_handler_t global_handler_remove;
 122
 123         void *user_data;
 124
 125         struct xkb_context *xkb_context;
 126
 127         uint32_t workspace;
 128         uint32_t workspace_count;
 129
 130         /* A hack to get text extents for tooltips */
 131         cairo_surface_t *dummy_surface;
 132         void *dummy_surface_data;
 133
 134         int has_rgb565;
 135         int seat_version;
 136 };
 137
 138 struct window_output {
 139         struct output *output;
 140         struct wl_list link;
 141 };
 142
 143 struct toysurface {
 144         /*
 145          * Prepare the surface for drawing. Makes sure there is a surface
 146          * of the right size available for rendering, and returns it.
 147          * dx,dy are the x,y of wl_surface.attach.
 148          * width,height are the new buffer size.
 149          * If flags has SURFACE_HINT_RESIZE set, the user is
 150          * doing continuous resizing.
 151          * Returns the Cairo surface to draw to.
 152          */
 153         cairo_surface_t *(*prepare)(struct toysurface *base, int dx, int dy,
 154                                     int32_t width, int32_t height, uint32_t flags,
 155                                     enum wl_output_transform buffer_transform, int32_t buffer_scale);
 156
 157         /*
 158          * Post the surface to the server, returning the server allocation
 159          * rectangle. The Cairo surface from prepare() must be destroyed
 160          * after calling this.
 161          */
 162         void (*swap)(struct toysurface *base,
 163                      enum wl_output_transform buffer_transform, int32_t buffer_scale,
 164                      struct rectangle *server_allocation);
 165
 166         /*
 167          * Make the toysurface current with the given EGL context.
 168          * Returns 0 on success, and negative of failure.
 169          */
 170         int (*acquire)(struct toysurface *base, EGLContext ctx);
 171
 172         /*
 173          * Release the toysurface from the EGL context, returning control
 174          * to Cairo.
 175          */
 176         void (*release)(struct toysurface *base);
 177
 178         /*
 179          * Destroy the toysurface, including the Cairo surface, any
 180          * backing storage, and the Wayland protocol objects.
 181          */
 182         void (*destroy)(struct toysurface *base);
 183 };
 184
 185 struct surface {
 186         struct window *window;
 187
 188         struct wl_surface *surface;
 189         struct wl_subsurface *subsurface;
 190         int synchronized;
 191         int synchronized_default;
 192         struct toysurface *toysurface;
 193         struct widget *widget;
 194         int redraw_needed;
 195         struct wl_callback *frame_cb;
 196         uint32_t last_time;
 197
 198         struct rectangle allocation;
 199         struct rectangle server_allocation;
 200
 201         struct wl_region *input_region;
 202         struct wl_region *opaque_region;
 203
 204         enum window_buffer_type buffer_type;
 205         enum wl_output_transform buffer_transform;
 206         int32_t buffer_scale;
 207
 208         cairo_surface_t *cairo_surface;
 209
 210         struct wl_list link;
 211 };
 212
 213 struct window {
 214         struct display *display;
 215         struct wl_list window_output_list;
 216         char *title;
 217         struct rectangle saved_allocation;
 218         struct rectangle min_allocation;
 219         struct rectangle pending_allocation;
 220         int x, y;
 221         int redraw_needed;
 222         int redraw_task_scheduled;
 223         struct task redraw_task;
 224         int resize_needed;
 225         int custom;
 226         int focused;
 227
 228         int resizing;
 229
 230         int fullscreen;
 231         int maximized;
 232
 233         enum preferred_format preferred_format;
 234
 235         window_key_handler_t key_handler;
 236         window_keyboard_focus_handler_t keyboard_focus_handler;
 237         window_data_handler_t data_handler;
 238         window_drop_handler_t drop_handler;
 239         window_close_handler_t close_handler;
 240         window_fullscreen_handler_t fullscreen_handler;
 241         window_output_handler_t output_handler;
 242         window_state_changed_handler_t state_changed_handler;
 243
 244         struct surface *main_surface;
 245         struct xdg_surface *xdg_surface;
 246         struct xdg_popup *xdg_popup;
 247
 248         struct window *parent;
 249
 250         struct window_frame *frame;
 251
 252         /* struct surface::link, contains also main_surface */
 253         struct wl_list subsurface_list;
 254
 255         void *user_data;
 256         struct wl_list link;
 257 };
 258
 259 struct widget {
 260         struct window *window;
 261         struct surface *surface;
 262         struct tooltip *tooltip;
 263         struct wl_list child_list;
 264         struct wl_list link;
 265         struct rectangle allocation;
 266         widget_resize_handler_t resize_handler;
 267         widget_redraw_handler_t redraw_handler;
 268         widget_enter_handler_t enter_handler;
 269         widget_leave_handler_t leave_handler;
 270         widget_motion_handler_t motion_handler;
 271         widget_button_handler_t button_handler;
 272         widget_touch_down_handler_t touch_down_handler;
 273         widget_touch_up_handler_t touch_up_handler;
 274         widget_touch_motion_handler_t touch_motion_handler;
 275         widget_touch_frame_handler_t touch_frame_handler;
 276         widget_touch_cancel_handler_t touch_cancel_handler;
 277         widget_axis_handler_t axis_handler;
 278         void *user_data;
 279         int opaque;
 280         int tooltip_count;
 281         int default_cursor;
 282         /* If this is set to false then no cairo surface will be
 283          * created before redrawing the surface. This is useful if the
 284          * redraw handler is going to do completely custom rendering
 285          * such as using EGL directly */
 286         int use_cairo;
 287 };
 288
 289 struct touch_point {
 290         int32_t id;
 291         float x, y;
 292         struct widget *widget;
 293         struct wl_list link;
 294 };
 295
 296 struct input {
 297         struct display *display;
 298         struct wl_seat *seat;
 299         struct wl_pointer *pointer;
 300         struct wl_keyboard *keyboard;
 301         struct wl_touch *touch;
 302         struct wl_list touch_point_list;
 303         struct window *pointer_focus;
 304         struct window *keyboard_focus;
 305         struct window *touch_focus;
 306         int current_cursor;
 307         uint32_t cursor_anim_start;
 308         struct wl_callback *cursor_frame_cb;
 309         struct wl_surface *pointer_surface;
 310         uint32_t modifiers;
 311         uint32_t pointer_enter_serial;
 312         uint32_t cursor_serial;
 313         float sx, sy;
 314         struct wl_list link;
 315
 316         struct widget *focus_widget;
 317         struct widget *grab;
 318         uint32_t grab_button;
 319
 320         struct wl_data_device *data_device;
 321         struct data_offer *drag_offer;
 322         struct data_offer *selection_offer;
 323         uint32_t touch_grab;
 324         int32_t touch_grab_id;
 325         float drag_x, drag_y;
 326         struct window *drag_focus;
 327         uint32_t drag_enter_serial;
 328
 329         struct {
 330                 struct xkb_keymap *keymap;
 331                 struct xkb_state *state;
 332                 xkb_mod_mask_t control_mask;
 333                 xkb_mod_mask_t alt_mask;
 334                 xkb_mod_mask_t shift_mask;
 335         } xkb;
 336
 337         int32_t repeat_rate_sec;
 338         int32_t repeat_rate_nsec;
 339         int32_t repeat_delay_sec;
 340         int32_t repeat_delay_nsec;
 341
 342         struct task repeat_task;
 343         int repeat_timer_fd;
 344         uint32_t repeat_sym;
 345         uint32_t repeat_key;
 346         uint32_t repeat_time;
 347 };
 348
 349 struct output {
 350         struct display *display;
 351         struct wl_output *output;
 352         uint32_t server_output_id;
 353         struct rectangle allocation;
 354         struct wl_list link;
 355         int transform;
 356         int scale;
 357         char *make;
 358         char *model;
 359
 360         display_output_handler_t destroy_handler;
 361         void *user_data;
 362 };
 363
 364 struct window_frame {
 365         struct widget *widget;
 366         struct widget *child;
 367         struct frame *frame;
 368
 369         uint32_t last_time;
 370         uint32_t did_double, double_click;
 371 };
 372
 373 struct menu {
 374         void *user_data;
 375         struct window *window;
 376         struct widget *widget;
 377         struct input *input;
 378         struct frame *frame;
 379         const char **entries;
 380         uint32_t time;
 381         int current;
 382         int count;
 383         int release_count;
 384         menu_func_t func;
 385 };
 386
 387 struct tooltip {
 388         struct widget *parent;
 389         struct widget *widget;
 390         char *entry;
 391         struct task tooltip_task;
 392         int tooltip_fd;
 393         float x, y;
 394 };
 395
 396 struct shm_pool {
 397         struct wl_shm_pool *pool;
 398         size_t size;
 399         size_t used;
 400         void *data;
 401 };
 402
 403 enum {
 404         CURSOR_DEFAULT = 100,
 405         CURSOR_UNSET
 406 };
 407
 408 static const cairo_user_data_key_t shm_surface_data_key;
 409
 410 /* #define DEBUG */
 411
 412 #ifdef DEBUG
 413
 414 static void
 415 debug_print(void *proxy, int line, const char *func, const char *fmt, ...)
 416 __attribute__ ((format (printf, 4, 5)));
 417
 418 static void
 419 debug_print(void *proxy, int line, const char *func, const char *fmt, ...)
 420 {
 421         va_list ap;
 422         struct timeval tv;
 423
 424         gettimeofday(&tv, NULL);
 425         fprintf(stderr, "%8ld.%03ld ",
 426                 (long)tv.tv_sec & 0xffff, (long)tv.tv_usec / 1000);
 427
 428         if (proxy)
 429                 fprintf(stderr, "%s@%d ",
 430                         wl_proxy_get_class(proxy), wl_proxy_get_id(proxy));
 431
 432         /*fprintf(stderr, __FILE__ ":%d:%s ", line, func);*/
 433         fprintf(stderr, "%s ", func);
 434
 435         va_start(ap, fmt);
 436         vfprintf(stderr, fmt, ap);
 437         va_end(ap);
 438 }
 439
 440 #define DBG(fmt, ...) \
 441         debug_print(NULL, __LINE__, __func__, fmt, ##__VA_ARGS__)
 442
 443 #define DBG_OBJ(obj, fmt, ...) \
 444         debug_print(obj, __LINE__, __func__, fmt, ##__VA_ARGS__)
 445
 446 #else
 447
 448 #define DBG(...) do {} while (0)
 449 #define DBG_OBJ(...) do {} while (0)
 450
 451 #endif
 452
 453 static void
 454 surface_to_buffer_size (enum wl_output_transform buffer_transform, int32_t buffer_scale, int32_t *width, int32_t *height)
 455 {
 456         int32_t tmp;
 457
 458         switch (buffer_transform) {
 459         case WL_OUTPUT_TRANSFORM_90:
 460         case WL_OUTPUT_TRANSFORM_270:
 461         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
 462         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
 463                 tmp = *width;
 464                 *width = *height;
 465                 *height = tmp;
 466                 break;
 467         default:
 468                 break;
 469         }
 470
 471         *width *= buffer_scale;
 472         *height *= buffer_scale;
 473 }
 474
 475 static void
 476 buffer_to_surface_size (enum wl_output_transform buffer_transform, int32_t buffer_scale, int32_t *width, int32_t *height)
 477 {
 478         int32_t tmp;
 479
 480         switch (buffer_transform) {
 481         case WL_OUTPUT_TRANSFORM_90:
 482         case WL_OUTPUT_TRANSFORM_270:
 483         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
 484         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
 485                 tmp = *width;
 486                 *width = *height;
 487                 *height = tmp;
 488                 break;
 489         default:
 490                 break;
 491         }
 492
 493         *width /= buffer_scale;
 494         *height /= buffer_scale;
 495 }
 496
 497 #ifdef HAVE_CAIRO_EGL
 498
 499 struct egl_window_surface {
 500         struct toysurface base;
 501         cairo_surface_t *cairo_surface;
 502         struct display *display;
 503         struct wl_surface *surface;
 504         struct wl_egl_window *egl_window;
 505         EGLSurface egl_surface;
 506 };
 507
 508 static struct egl_window_surface *
 509 to_egl_window_surface(struct toysurface *base)
 510 {
 511         return container_of(base, struct egl_window_surface, base);
 512 }
 513
 514 static cairo_surface_t *
 515 egl_window_surface_prepare(struct toysurface *base, int dx, int dy,
 516                            int32_t width, int32_t height, uint32_t flags,
 517                            enum wl_output_transform buffer_transform, int32_t buffer_scale)
 518 {
 519         struct egl_window_surface *surface = to_egl_window_surface(base);
 520
 521         surface_to_buffer_size (buffer_transform, buffer_scale, &width, &height);
 522
 523         wl_egl_window_resize(surface->egl_window, width, height, dx, dy);
 524         cairo_gl_surface_set_size(surface->cairo_surface, width, height);
 525
 526         return cairo_surface_reference(surface->cairo_surface);
 527 }
 528
 529 static void
 530 egl_window_surface_swap(struct toysurface *base,
 531                         enum wl_output_transform buffer_transform, int32_t buffer_scale,
 532                         struct rectangle *server_allocation)
 533 {
 534         struct egl_window_surface *surface = to_egl_window_surface(base);
 535
 536         cairo_gl_surface_swapbuffers(surface->cairo_surface);
 537         wl_egl_window_get_attached_size(surface->egl_window,
 538                                         &server_allocation->width,
 539                                         &server_allocation->height);
 540
 541         buffer_to_surface_size (buffer_transform, buffer_scale,
 542                                 &server_allocation->width,
 543                                 &server_allocation->height);
 544 }
 545
 546 static int
 547 egl_window_surface_acquire(struct toysurface *base, EGLContext ctx)
 548 {
 549         struct egl_window_surface *surface = to_egl_window_surface(base);
 550         cairo_device_t *device;
 551
 552         device = cairo_surface_get_device(surface->cairo_surface);
 553         if (!device)
 554                 return -1;
 555
 556         if (!ctx) {
 557                 if (device == surface->display->argb_device)
 558                         ctx = surface->display->argb_ctx;
 559                 else
 560                         assert(0);
 561         }
 562
 563         cairo_device_flush(device);
 564         cairo_device_acquire(device);
 565         if (!eglMakeCurrent(surface->display->dpy, surface->egl_surface,
 566                             surface->egl_surface, ctx))
 567                 fprintf(stderr, "failed to make surface current\n");
 568
 569         return 0;
 570 }
 571
 572 static void
 573 egl_window_surface_release(struct toysurface *base)
 574 {
 575         struct egl_window_surface *surface = to_egl_window_surface(base);
 576         cairo_device_t *device;
 577
 578         device = cairo_surface_get_device(surface->cairo_surface);
 579         if (!device)
 580                 return;
 581
 582         if (!eglMakeCurrent(surface->display->dpy,
 583                             EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT))
 584                 fprintf(stderr, "failed to make context current\n");
 585
 586         cairo_device_release(device);
 587 }
 588
 589 static void
 590 egl_window_surface_destroy(struct toysurface *base)
 591 {
 592         struct egl_window_surface *surface = to_egl_window_surface(base);
 593         struct display *d = surface->display;
 594
 595         cairo_surface_destroy(surface->cairo_surface);
 596         eglDestroySurface(d->dpy, surface->egl_surface);
 597         wl_egl_window_destroy(surface->egl_window);
 598         surface->surface = NULL;
 599
 600         free(surface);
 601 }
 602
 603 static struct toysurface *
 604 egl_window_surface_create(struct display *display,
 605                           struct wl_surface *wl_surface,
 606                           uint32_t flags,
 607                           struct rectangle *rectangle)
 608 {
 609         struct egl_window_surface *surface;
 610
 611         if (display->dpy == EGL_NO_DISPLAY)
 612                 return NULL;
 613
 614         surface = calloc(1, sizeof *surface);
 615         if (!surface)
 616                 return NULL;
 617
 618         surface->base.prepare = egl_window_surface_prepare;
 619         surface->base.swap = egl_window_surface_swap;
 620         surface->base.acquire = egl_window_surface_acquire;
 621         surface->base.release = egl_window_surface_release;
 622         surface->base.destroy = egl_window_surface_destroy;
 623
 624         surface->display = display;
 625         surface->surface = wl_surface;
 626
 627         surface->egl_window = wl_egl_window_create(surface->surface,
 628                                                    rectangle->width,
 629                                                    rectangle->height);
 630
 631         surface->egl_surface = eglCreateWindowSurface(display->dpy,
 632                                                       display->argb_config,
 633                                                       surface->egl_window,
 634                                                       NULL);
 635
 636         surface->cairo_surface =
 637                 cairo_gl_surface_create_for_egl(display->argb_device,
 638                                                 surface->egl_surface,
 639                                                 rectangle->width,
 640                                                 rectangle->height);
 641
 642         return &surface->base;
 643 }
 644
 645 #else
 646
 647 static struct toysurface *
 648 egl_window_surface_create(struct display *display,
 649                           struct wl_surface *wl_surface,
 650                           uint32_t flags,
 651                           struct rectangle *rectangle)
 652 {
 653         return NULL;
 654 }
 655
 656 #endif
 657
 658 struct shm_surface_data {
 659         struct wl_buffer *buffer;
 660         struct shm_pool *pool;
 661 };
 662
 663 struct wl_buffer *
 664 display_get_buffer_for_surface(struct display *display,
 665                                cairo_surface_t *surface)
 666 {
 667         struct shm_surface_data *data;
 668
 669         data = cairo_surface_get_user_data(surface, &shm_surface_data_key);
 670
 671         return data->buffer;
 672 }
 673
 674 static void
 675 shm_pool_destroy(struct shm_pool *pool);
 676
 677 static void
 678 shm_surface_data_destroy(void *p)
 679 {
 680         struct shm_surface_data *data = p;
 681
 682         wl_buffer_destroy(data->buffer);
 683         if (data->pool)
 684                 shm_pool_destroy(data->pool);
 685
 686         free(data);
 687 }
 688
 689 static struct wl_shm_pool *
 690 make_shm_pool(struct display *display, int size, void **data)
 691 {
 692         struct wl_shm_pool *pool;
 693         int fd;
 694
 695         fd = os_create_anonymous_file(size);
 696         if (fd < 0) {
 697                 fprintf(stderr, "creating a buffer file for %d B failed: %m\n",
 698                         size);
 699                 return NULL;
 700         }
 701
 702         *data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 703         if (*data == MAP_FAILED) {
 704                 fprintf(stderr, "mmap failed: %m\n");
 705                 close(fd);
 706                 return NULL;
 707         }
 708
 709         pool = wl_shm_create_pool(display->shm, fd, size);
 710
 711         close(fd);
 712
 713         return pool;
 714 }
 715
 716 static struct shm_pool *
 717 shm_pool_create(struct display *display, size_t size)
 718 {
 719         struct shm_pool *pool = malloc(sizeof *pool);
 720
 721         if (!pool)
 722                 return NULL;
 723
 724         pool->pool = make_shm_pool(display, size, &pool->data);
 725         if (!pool->pool) {
 726                 free(pool);
 727                 return NULL;
 728         }
 729
 730         pool->size = size;
 731         pool->used = 0;
 732
 733         return pool;
 734 }
 735
 736 static void *
 737 shm_pool_allocate(struct shm_pool *pool, size_t size, int *offset)
 738 {
 739         if (pool->used + size > pool->size)
 740                 return NULL;
 741
 742         *offset = pool->used;
 743         pool->used += size;
 744
 745         return (char *) pool->data + *offset;
 746 }
 747
 748 /* destroy the pool. this does not unmap the memory though */
 749 static void
 750 shm_pool_destroy(struct shm_pool *pool)
 751 {
 752         munmap(pool->data, pool->size);
 753         wl_shm_pool_destroy(pool->pool);
 754         free(pool);
 755 }
 756
 757 /* Start allocating from the beginning of the pool again */
 758 static void
 759 shm_pool_reset(struct shm_pool *pool)
 760 {
 761         pool->used = 0;
 762 }
 763
 764 static int
 765 data_length_for_shm_surface(struct rectangle *rect)
 766 {
 767         int stride;
 768
 769         stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32,
 770                                                 rect->width);
 771         return stride * rect->height;
 772 }
 773
 774 static cairo_surface_t *
 775 display_create_shm_surface_from_pool(struct display *display,
 776                                      struct rectangle *rectangle,
 777                                      uint32_t flags, struct shm_pool *pool)
 778 {
 779         struct shm_surface_data *data;
 780         uint32_t format;
 781         cairo_surface_t *surface;
 782         cairo_format_t cairo_format;
 783         int stride, length, offset;
 784         void *map;
 785
 786         data = malloc(sizeof *data);
 787         if (data == NULL)
 788                 return NULL;
 789
 790         if (flags & SURFACE_HINT_RGB565 && display->has_rgb565)
 791                 cairo_format = CAIRO_FORMAT_RGB16_565;
 792         else
 793                 cairo_format = CAIRO_FORMAT_ARGB32;
 794
 795         stride = cairo_format_stride_for_width (cairo_format, rectangle->width);
 796         length = stride * rectangle->height;
 797         data->pool = NULL;
 798         map = shm_pool_allocate(pool, length, &offset);
 799
 800         if (!map) {
 801                 free(data);
 802                 return NULL;
 803         }
 804
 805         surface = cairo_image_surface_create_for_data (map,
 806                                                        cairo_format,
 807                                                        rectangle->width,
 808                                                        rectangle->height,
 809                                                        stride);
 810
 811         cairo_surface_set_user_data(surface, &shm_surface_data_key,
 812                                     data, shm_surface_data_destroy);
 813
 814         if (flags & SURFACE_HINT_RGB565 && display->has_rgb565)
 815                 format = WL_SHM_FORMAT_RGB565;
 816         else {
 817                 if (flags & SURFACE_OPAQUE)
 818                         format = WL_SHM_FORMAT_XRGB8888;
 819                 else
 820                         format = WL_SHM_FORMAT_ARGB8888;
 821         }
 822
 823         data->buffer = wl_shm_pool_create_buffer(pool->pool, offset,
 824                                                  rectangle->width,
 825                                                  rectangle->height,
 826                                                  stride, format);
 827
 828         return surface;
 829 }
 830
 831 static cairo_surface_t *
 832 display_create_shm_surface(struct display *display,
 833                            struct rectangle *rectangle, uint32_t flags,
 834                            struct shm_pool *alternate_pool,
 835                            struct shm_surface_data **data_ret)
 836 {
 837         struct shm_surface_data *data;
 838         struct shm_pool *pool;
 839         cairo_surface_t *surface;
 840
 841         if (alternate_pool) {
 842                 shm_pool_reset(alternate_pool);
 843                 surface = display_create_shm_surface_from_pool(display,
 844                                                                rectangle,
 845                                                                flags,
 846                                                                alternate_pool);
 847                 if (surface) {
 848                         data = cairo_surface_get_user_data(surface,
 849                                                            &shm_surface_data_key);
 850                         goto out;
 851                 }
 852         }
 853
 854         pool = shm_pool_create(display,
 855                                data_length_for_shm_surface(rectangle));
 856         if (!pool)
 857                 return NULL;
 858
 859         surface =
 860                 display_create_shm_surface_from_pool(display, rectangle,
 861                                                      flags, pool);
 862
 863         if (!surface) {
 864                 shm_pool_destroy(pool);
 865                 return NULL;
 866         }
 867
 868         /* make sure we destroy the pool when the surface is destroyed */
 869         data = cairo_surface_get_user_data(surface, &shm_surface_data_key);
 870         data->pool = pool;
 871
 872 out:
 873         if (data_ret)
 874                 *data_ret = data;
 875
 876         return surface;
 877 }
 878
 879 static int
 880 check_size(struct rectangle *rect)
 881 {
 882         if (rect->width && rect->height)
 883                 return 0;
 884
 885         fprintf(stderr, "tried to create surface of "
 886                 "width: %d, height: %d\n", rect->width, rect->height);
 887         return -1;
 888 }
 889
 890 cairo_surface_t *
 891 display_create_surface(struct display *display,
 892                        struct wl_surface *surface,
 893                        struct rectangle *rectangle,
 894                        uint32_t flags)
 895 {
 896         if (check_size(rectangle) < 0)
 897                 return NULL;
 898
 899         assert(flags & SURFACE_SHM);
 900         return display_create_shm_surface(display, rectangle, flags,
 901                                           NULL, NULL);
 902 }
 903
 904 struct shm_surface_leaf {
 905         cairo_surface_t *cairo_surface;
 906         /* 'data' is automatically destroyed, when 'cairo_surface' is */
 907         struct shm_surface_data *data;
 908
 909         struct shm_pool *resize_pool;
 910         int busy;
 911 };
 912
 913 static void
 914 shm_surface_leaf_release(struct shm_surface_leaf *leaf)
 915 {
 916         if (leaf->cairo_surface)
 917                 cairo_surface_destroy(leaf->cairo_surface);
 918         /* leaf->data already destroyed via cairo private */
 919
 920         if (leaf->resize_pool)
 921                 shm_pool_destroy(leaf->resize_pool);
 922
 923         memset(leaf, 0, sizeof *leaf);
 924 }
 925
 926 #define MAX_LEAVES 3
 927
 928 struct shm_surface {
 929         struct toysurface base;
 930         struct display *display;
 931         struct wl_surface *surface;
 932         uint32_t flags;
 933         int dx, dy;
 934
 935         struct shm_surface_leaf leaf[MAX_LEAVES];
 936         struct shm_surface_leaf *current;
 937 };
 938
 939 static struct shm_surface *
 940 to_shm_surface(struct toysurface *base)
 941 {
 942         return container_of(base, struct shm_surface, base);
 943 }
 944
 945 static void
 946 shm_surface_buffer_state_debug(struct shm_surface *surface, const char *msg)
 947 {
 948 #ifdef DEBUG
 949         struct shm_surface_leaf *leaf;
 950         char bufs[MAX_LEAVES + 1];
 951         int i;
 952
 953         for (i = 0; i < MAX_LEAVES; i++) {
 954                 leaf = &surface->leaf[i];
 955
 956                 if (leaf->busy)
 957                         bufs[i] = 'b';
 958                 else if (leaf->cairo_surface)
 959                         bufs[i] = 'a';
 960                 else
 961                         bufs[i] = ' ';
 962         }
 963
 964         bufs[MAX_LEAVES] = '\0';
 965         DBG_OBJ(surface->surface, "%s, leaves [%s]\n", msg, bufs);
 966 #endif
 967 }
 968
 969 static void
 970 shm_surface_buffer_release(void *data, struct wl_buffer *buffer)
 971 {
 972         struct shm_surface *surface = data;
 973         struct shm_surface_leaf *leaf;
 974         int i;
 975         int free_found;
 976
 977         shm_surface_buffer_state_debug(surface, "buffer_release before");
 978
 979         for (i = 0; i < MAX_LEAVES; i++) {
 980                 leaf = &surface->leaf[i];
 981                 if (leaf->data && leaf->data->buffer == buffer) {
 982                         leaf->busy = 0;
 983                         break;
 984                 }
 985         }
 986         assert(i < MAX_LEAVES && "unknown buffer released");
 987
 988         /* Leave one free leaf with storage, release others */
 989         free_found = 0;
 990         for (i = 0; i < MAX_LEAVES; i++) {
 991                 leaf = &surface->leaf[i];
 992
 993                 if (!leaf->cairo_surface || leaf->busy)
 994                         continue;
 995
 996                 if (!free_found)
 997                         free_found = 1;
 998                 else
 999                         shm_surface_leaf_release(leaf);
1000         }
1001
1002         shm_surface_buffer_state_debug(surface, "buffer_release  after");
1003 }
1004
1005 static const struct wl_buffer_listener shm_surface_buffer_listener = {
1006         shm_surface_buffer_release
1007 };
1008
1009 static cairo_surface_t *
1010 shm_surface_prepare(struct toysurface *base, int dx, int dy,
1011                     int32_t width, int32_t height, uint32_t flags,
1012                     enum wl_output_transform buffer_transform, int32_t buffer_scale)
1013 {
1014         int resize_hint = !!(flags & SURFACE_HINT_RESIZE);
1015         struct shm_surface *surface = to_shm_surface(base);
1016         struct rectangle rect = { 0};
1017         struct shm_surface_leaf *leaf = NULL;
1018         int i;
1019
1020         surface->dx = dx;
1021         surface->dy = dy;
1022
1023         /* pick a free buffer, preferrably one that already has storage */
1024         for (i = 0; i < MAX_LEAVES; i++) {
1025                 if (surface->leaf[i].busy)
1026                         continue;
1027
1028                 if (!leaf || surface->leaf[i].cairo_surface)
1029                         leaf = &surface->leaf[i];
1030         }
1031         DBG_OBJ(surface->surface, "pick leaf %d\n",
1032                 (int)(leaf - &surface->leaf[0]));
1033
1034         if (!leaf) {
1035                 fprintf(stderr, "%s: all buffers are held by the server.\n",
1036                         __func__);
1037                 exit(1);
1038                 return NULL;
1039         }
1040
1041         if (!resize_hint && leaf->resize_pool) {
1042                 cairo_surface_destroy(leaf->cairo_surface);
1043                 leaf->cairo_surface = NULL;
1044                 shm_pool_destroy(leaf->resize_pool);
1045                 leaf->resize_pool = NULL;
1046         }
1047
1048         surface_to_buffer_size (buffer_transform, buffer_scale, &width, &height);
1049
1050         if (leaf->cairo_surface &&
1051             cairo_image_surface_get_width(leaf->cairo_surface) == width &&
1052             cairo_image_surface_get_height(leaf->cairo_surface) == height)
1053                 goto out;
1054
1055         if (leaf->cairo_surface)
1056                 cairo_surface_destroy(leaf->cairo_surface);
1057
1058 #ifdef USE_RESIZE_POOL
1059         if (resize_hint && !leaf->resize_pool) {
1060                 /* Create a big pool to allocate from, while continuously
1061                  * resizing. Mmapping a new pool in the server
1062                  * is relatively expensive, so reusing a pool performs
1063                  * better, but may temporarily reserve unneeded memory.
1064                  */
1065                 /* We should probably base this number on the output size. */
1066                 leaf->resize_pool = shm_pool_create(surface->display,
1067                                                     6 * 1024 * 1024);
1068         }
1069 #endif
1070
1071         rect.width = width;
1072         rect.height = height;
1073
1074         leaf->cairo_surface =
1075                 display_create_shm_surface(surface->display, &rect,
1076                                            surface->flags,
1077                                            leaf->resize_pool,
1078                                            &leaf->data);
1079         if (!leaf->cairo_surface)
1080                 return NULL;
1081
1082         wl_buffer_add_listener(leaf->data->buffer,
1083                                &shm_surface_buffer_listener, surface);
1084
1085 out:
1086         surface->current = leaf;
1087
1088         return cairo_surface_reference(leaf->cairo_surface);
1089 }
1090
1091 static void
1092 shm_surface_swap(struct toysurface *base,
1093                  enum wl_output_transform buffer_transform, int32_t buffer_scale,
1094                  struct rectangle *server_allocation)
1095 {
1096         struct shm_surface *surface = to_shm_surface(base);
1097         struct shm_surface_leaf *leaf = surface->current;
1098
1099         server_allocation->width =
1100                 cairo_image_surface_get_width(leaf->cairo_surface);
1101         server_allocation->height =
1102                 cairo_image_surface_get_height(leaf->cairo_surface);
1103
1104         buffer_to_surface_size (buffer_transform, buffer_scale,
1105                                 &server_allocation->width,
1106                                 &server_allocation->height);
1107
1108         wl_surface_attach(surface->surface, leaf->data->buffer,
1109                           surface->dx, surface->dy);
1110         wl_surface_damage(surface->surface, 0, 0,
1111                           server_allocation->width, server_allocation->height);
1112         wl_surface_commit(surface->surface);
1113
1114         DBG_OBJ(surface->surface, "leaf %d busy\n",
1115                 (int)(leaf - &surface->leaf[0]));
1116
1117         leaf->busy = 1;
1118         surface->current = NULL;
1119 }
1120
1121 static int
1122 shm_surface_acquire(struct toysurface *base, EGLContext ctx)
1123 {
1124         return -1;
1125 }
1126
1127 static void
1128 shm_surface_release(struct toysurface *base)
1129 {
1130 }
1131
1132 static void
1133 shm_surface_destroy(struct toysurface *base)
1134 {
1135         struct shm_surface *surface = to_shm_surface(base);
1136         int i;
1137
1138         for (i = 0; i < MAX_LEAVES; i++)
1139                 shm_surface_leaf_release(&surface->leaf[i]);
1140
1141         free(surface);
1142 }
1143
1144 static struct toysurface *
1145 shm_surface_create(struct display *display, struct wl_surface *wl_surface,
1146                    uint32_t flags, struct rectangle *rectangle)
1147 {
1148         struct shm_surface *surface;
1149         DBG_OBJ(wl_surface, "\n");
1150
1151         surface = xmalloc(sizeof *surface);
1152         memset(surface, 0, sizeof *surface);
1153
1154         if (!surface)
1155                 return NULL;
1156
1157         surface->base.prepare = shm_surface_prepare;
1158         surface->base.swap = shm_surface_swap;
1159         surface->base.acquire = shm_surface_acquire;
1160         surface->base.release = shm_surface_release;
1161         surface->base.destroy = shm_surface_destroy;
1162
1163         surface->display = display;
1164         surface->surface = wl_surface;
1165         surface->flags = flags;
1166
1167         return &surface->base;
1168 }
1169
1170 /*
1171  * The following correspondences between file names and cursors was copied
1172  * from: https://bugs.kde.org/attachment.cgi?id=67313
1173  */
1174
1175 static const char *bottom_left_corners[] = {
1176         "bottom_left_corner",
1177         "sw-resize",
1178         "size_bdiag"
1179 };
1180
1181 static const char *bottom_right_corners[] = {
1182         "bottom_right_corner",
1183         "se-resize",
1184         "size_fdiag"
1185 };
1186
1187 static const char *bottom_sides[] = {
1188         "bottom_side",
1189         "s-resize",
1190         "size_ver"
1191 };
1192
1193 static const char *grabbings[] = {
1194         "grabbing",
1195         "closedhand",
1196         "208530c400c041818281048008011002"
1197 };
1198
1199 static const char *left_ptrs[] = {
1200         "left_ptr",
1201         "default",
1202         "top_left_arrow",
1203         "left-arrow"
1204 };
1205
1206 static const char *left_sides[] = {
1207         "left_side",
1208         "w-resize",
1209         "size_hor"
1210 };
1211
1212 static const char *right_sides[] = {
1213         "right_side",
1214         "e-resize",
1215         "size_hor"
1216 };
1217
1218 static const char *top_left_corners[] = {
1219         "top_left_corner",
1220         "nw-resize",
1221         "size_fdiag"
1222 };
1223
1224 static const char *top_right_corners[] = {
1225         "top_right_corner",
1226         "ne-resize",
1227         "size_bdiag"
1228 };
1229
1230 static const char *top_sides[] = {
1231         "top_side",
1232         "n-resize",
1233         "size_ver"
1234 };
1235
1236 static const char *xterms[] = {
1237         "xterm",
1238         "ibeam",
1239         "text"
1240 };
1241
1242 static const char *hand1s[] = {
1243         "hand1",
1244         "pointer",
1245         "pointing_hand",
1246         "e29285e634086352946a0e7090d73106"
1247 };
1248
1249 static const char *watches[] = {
1250         "watch",
1251         "wait",
1252         "0426c94ea35c87780ff01dc239897213"
1253 };
1254
1255 struct cursor_alternatives {
1256         const char **names;
1257         size_t count;
1258 };
1259
1260 static const struct cursor_alternatives cursors[] = {
1261         {bottom_left_corners, ARRAY_LENGTH(bottom_left_corners)},
1262         {bottom_right_corners, ARRAY_LENGTH(bottom_right_corners)},
1263         {bottom_sides, ARRAY_LENGTH(bottom_sides)},
1264         {grabbings, ARRAY_LENGTH(grabbings)},
1265         {left_ptrs, ARRAY_LENGTH(left_ptrs)},
1266         {left_sides, ARRAY_LENGTH(left_sides)},
1267         {right_sides, ARRAY_LENGTH(right_sides)},
1268         {top_left_corners, ARRAY_LENGTH(top_left_corners)},
1269         {top_right_corners, ARRAY_LENGTH(top_right_corners)},
1270         {top_sides, ARRAY_LENGTH(top_sides)},
1271         {xterms, ARRAY_LENGTH(xterms)},
1272         {hand1s, ARRAY_LENGTH(hand1s)},
1273         {watches, ARRAY_LENGTH(watches)},
1274 };
1275
1276 static void
1277 create_cursors(struct display *display)
1278 {
1279         struct weston_config *config;
1280         struct weston_config_section *s;
1281         int size;
1282         char *theme = NULL;
1283         unsigned int i, j;
1284         struct wl_cursor *cursor;
1285
1286         config = weston_config_parse("weston.ini");
1287         s = weston_config_get_section(config, "shell", NULL, NULL);
1288         weston_config_section_get_string(s, "cursor-theme", &theme, NULL);
1289         weston_config_section_get_int(s, "cursor-size", &size, 32);
1290         weston_config_destroy(config);
1291
1292         display->cursor_theme = wl_cursor_theme_load(theme, size, display->shm);
1293         if (!display->cursor_theme) {
1294                 fprintf(stderr, "could not load theme '%s'\n", theme);
1295                 return;
1296         }
1297         free(theme);
1298         display->cursors =
1299                 xmalloc(ARRAY_LENGTH(cursors) * sizeof display->cursors[0]);
1300
1301         for (i = 0; i < ARRAY_LENGTH(cursors); i++) {
1302                 cursor = NULL;
1303                 for (j = 0; !cursor && j < cursors[i].count; ++j)
1304                         cursor = wl_cursor_theme_get_cursor(
1305                             display->cursor_theme, cursors[i].names[j]);
1306
1307                 if (!cursor)
1308                         fprintf(stderr, "could not load cursor '%s'\n",
1309                                 cursors[i].names[0]);
1310
1311                 display->cursors[i] = cursor;
1312         }
1313 }
1314
1315 static void
1316 destroy_cursors(struct display *display)
1317 {
1318         wl_cursor_theme_destroy(display->cursor_theme);
1319         free(display->cursors);
1320 }
1321
1322 struct wl_cursor_image *
1323 display_get_pointer_image(struct display *display, int pointer)
1324 {
1325         struct wl_cursor *cursor = display->cursors[pointer];
1326
1327         return cursor ? cursor->images[0] : NULL;
1328 }
1329
1330 static void
1331 surface_flush(struct surface *surface)
1332 {
1333         if (!surface->cairo_surface)
1334                 return;
1335
1336         if (surface->opaque_region) {
1337                 wl_surface_set_opaque_region(surface->surface,
1338                                              surface->opaque_region);
1339                 wl_region_destroy(surface->opaque_region);
1340                 surface->opaque_region = NULL;
1341         }
1342
1343         if (surface->input_region) {
1344                 wl_surface_set_input_region(surface->surface,
1345                                             surface->input_region);
1346                 wl_region_destroy(surface->input_region);
1347                 surface->input_region = NULL;
1348         }
1349
1350         surface->toysurface->swap(surface->toysurface,
1351                                   surface->buffer_transform, surface->buffer_scale,
1352                                   &surface->server_allocation);
1353
1354         cairo_surface_destroy(surface->cairo_surface);
1355         surface->cairo_surface = NULL;
1356 }
1357
1358 int
1359 window_has_focus(struct window *window)
1360 {
1361         return window->focused;
1362 }
1363
1364 static void
1365 window_close(struct window *window)
1366 {
1367         if (window->close_handler)
1368                 window->close_handler(window->user_data);
1369         else
1370                 display_exit(window->display);
1371 }
1372
1373 struct display *
1374 window_get_display(struct window *window)
1375 {
1376         return window->display;
1377 }
1378
1379 static void
1380 surface_create_surface(struct surface *surface, uint32_t flags)
1381 {
1382         struct display *display = surface->window->display;
1383         struct rectangle allocation = surface->allocation;
1384
1385         if (!surface->toysurface && display->dpy &&
1386             surface->buffer_type == WINDOW_BUFFER_TYPE_EGL_WINDOW) {
1387                 surface->toysurface =
1388                         egl_window_surface_create(display,
1389                                                   surface->surface,
1390                                                   flags,
1391                                                   &allocation);
1392         }
1393
1394         if (!surface->toysurface)
1395                 surface->toysurface = shm_surface_create(display,
1396                                                          surface->surface,
1397                                                          flags, &allocation);
1398
1399         surface->cairo_surface = surface->toysurface->prepare(
1400                 surface->toysurface, 0, 0,
1401                 allocation.width, allocation.height, flags,
1402                 surface->buffer_transform, surface->buffer_scale);
1403 }
1404
1405 static void
1406 window_create_main_surface(struct window *window)
1407 {
1408         struct surface *surface = window->main_surface;
1409         uint32_t flags = 0;
1410
1411         if (window->resizing)
1412                 flags |= SURFACE_HINT_RESIZE;
1413
1414         if (window->preferred_format == WINDOW_PREFERRED_FORMAT_RGB565)
1415                 flags |= SURFACE_HINT_RGB565;
1416
1417         surface_create_surface(surface, flags);
1418 }
1419
1420 int
1421 window_get_buffer_transform(struct window *window)
1422 {
1423         return window->main_surface->buffer_transform;
1424 }
1425
1426 void
1427 window_set_buffer_transform(struct window *window,
1428                             enum wl_output_transform transform)
1429 {
1430         window->main_surface->buffer_transform = transform;
1431         wl_surface_set_buffer_transform(window->main_surface->surface,
1432                                         transform);
1433 }
1434
1435 void
1436 window_set_buffer_scale(struct window *window,
1437                         int32_t scale)
1438 {
1439         window->main_surface->buffer_scale = scale;
1440         wl_surface_set_buffer_scale(window->main_surface->surface,
1441                                     scale);
1442 }
1443
1444 uint32_t
1445 window_get_buffer_scale(struct window *window)
1446 {
1447         return window->main_surface->buffer_scale;
1448 }
1449
1450 uint32_t
1451 window_get_output_scale(struct window *window)
1452 {
1453         struct window_output *window_output;
1454         struct window_output *window_output_tmp;
1455         int scale = 1;
1456
1457         wl_list_for_each_safe(window_output, window_output_tmp,
1458                               &window->window_output_list, link) {
1459                 if (window_output->output->scale > scale)
1460                         scale = window_output->output->scale;
1461         }
1462
1463         return scale;
1464 }
1465
1466 static void window_frame_destroy(struct window_frame *frame);
1467
1468 static void
1469 surface_destroy(struct surface *surface)
1470 {
1471         if (surface->frame_cb)
1472                 wl_callback_destroy(surface->frame_cb);
1473
1474         if (surface->input_region)
1475                 wl_region_destroy(surface->input_region);
1476
1477         if (surface->opaque_region)
1478                 wl_region_destroy(surface->opaque_region);
1479
1480         if (surface->subsurface)
1481                 wl_subsurface_destroy(surface->subsurface);
1482
1483         wl_surface_destroy(surface->surface);
1484
1485         if (surface->toysurface)
1486                 surface->toysurface->destroy(surface->toysurface);
1487
1488         wl_list_remove(&surface->link);
1489         free(surface);
1490 }
1491
1492 void
1493 window_destroy(struct window *window)
1494 {
1495         struct display *display = window->display;
1496         struct input *input;
1497         struct window_output *window_output;
1498         struct window_output *window_output_tmp;
1499
1500         wl_list_remove(&window->redraw_task.link);
1501
1502         wl_list_for_each(input, &display->input_list, link) {
1503                 if (input->touch_focus == window)
1504                         input->touch_focus = NULL;
1505                 if (input->pointer_focus == window)
1506                         input->pointer_focus = NULL;
1507                 if (input->keyboard_focus == window)
1508                         input->keyboard_focus = NULL;
1509                 if (input->focus_widget &&
1510                     input->focus_widget->window == window)
1511                         input->focus_widget = NULL;
1512         }
1513
1514         wl_list_for_each_safe(window_output, window_output_tmp,
1515                               &window->window_output_list, link) {
1516                 free (window_output);
1517         }
1518
1519         if (window->frame)
1520                 window_frame_destroy(window->frame);
1521
1522         if (window->xdg_surface)
1523                 xdg_surface_destroy(window->xdg_surface);
1524         if (window->xdg_popup)
1525                 xdg_popup_destroy(window->xdg_popup);
1526
1527         surface_destroy(window->main_surface);
1528
1529         wl_list_remove(&window->link);
1530
1531         free(window->title);
1532         free(window);
1533 }
1534
1535 static struct widget *
1536 widget_find_widget(struct widget *widget, int32_t x, int32_t y)
1537 {
1538         struct widget *child, *target;
1539
1540         wl_list_for_each(child, &widget->child_list, link) {
1541                 target = widget_find_widget(child, x, y);
1542                 if (target)
1543                         return target;
1544         }
1545
1546         if (widget->allocation.x <= x &&
1547             x < widget->allocation.x + widget->allocation.width &&
1548             widget->allocation.y <= y &&
1549             y < widget->allocation.y + widget->allocation.height) {
1550                 return widget;
1551         }
1552
1553         return NULL;
1554 }
1555
1556 static struct widget *
1557 window_find_widget(struct window *window, int32_t x, int32_t y)
1558 {
1559         struct surface *surface;
1560         struct widget *widget;
1561
1562         wl_list_for_each(surface, &window->subsurface_list, link) {
1563                 widget = widget_find_widget(surface->widget, x, y);
1564                 if (widget)
1565                         return widget;
1566         }
1567
1568         return NULL;
1569 }
1570
1571 static struct widget *
1572 widget_create(struct window *window, struct surface *surface, void *data)
1573 {
1574         struct widget *widget;
1575
1576         widget = xzalloc(sizeof *widget);
1577         widget->window = window;
1578         widget->surface = surface;
1579         widget->user_data = data;
1580         widget->allocation = surface->allocation;
1581         wl_list_init(&widget->child_list);
1582         widget->opaque = 0;
1583         widget->tooltip = NULL;
1584         widget->tooltip_count = 0;
1585         widget->default_cursor = CURSOR_LEFT_PTR;
1586         widget->use_cairo = 1;
1587
1588         return widget;
1589 }
1590
1591 struct widget *
1592 window_add_widget(struct window *window, void *data)
1593 {
1594         struct widget *widget;
1595
1596         widget = widget_create(window, window->main_surface, data);
1597         wl_list_init(&widget->link);
1598         window->main_surface->widget = widget;
1599
1600         return widget;
1601 }
1602
1603 struct widget *
1604 widget_add_widget(struct widget *parent, void *data)
1605 {
1606         struct widget *widget;
1607
1608         widget = widget_create(parent->window, parent->surface, data);
1609         wl_list_insert(parent->child_list.prev, &widget->link);
1610
1611         return widget;
1612 }
1613
1614 void
1615 widget_destroy(struct widget *widget)
1616 {
1617         struct display *display = widget->window->display;
1618         struct surface *surface = widget->surface;
1619         struct input *input;
1620
1621         /* Destroy the sub-surface along with the root widget */
1622         if (surface->widget == widget && surface->subsurface)
1623                 surface_destroy(widget->surface);
1624
1625         if (widget->tooltip)
1626                 widget_destroy_tooltip(widget);
1627
1628         wl_list_for_each(input, &display->input_list, link) {
1629                 if (input->focus_widget == widget)
1630                         input->focus_widget = NULL;
1631         }
1632
1633         wl_list_remove(&widget->link);
1634         free(widget);
1635 }
1636
1637 void
1638 widget_set_default_cursor(struct widget *widget, int cursor)
1639 {
1640         widget->default_cursor = cursor;
1641 }
1642
1643 void
1644 widget_get_allocation(struct widget *widget, struct rectangle *allocation)
1645 {
1646         *allocation = widget->allocation;
1647 }
1648
1649 void
1650 widget_set_size(struct widget *widget, int32_t width, int32_t height)
1651 {
1652         widget->allocation.width = width;
1653         widget->allocation.height = height;
1654 }
1655
1656 void
1657 widget_set_allocation(struct widget *widget,
1658                       int32_t x, int32_t y, int32_t width, int32_t height)
1659 {
1660         widget->allocation.x = x;
1661         widget->allocation.y = y;
1662         widget_set_size(widget, width, height);
1663 }
1664
1665 void
1666 widget_set_transparent(struct widget *widget, int transparent)
1667 {
1668         widget->opaque = !transparent;
1669 }
1670
1671 void *
1672 widget_get_user_data(struct widget *widget)
1673 {
1674         return widget->user_data;
1675 }
1676
1677 static cairo_surface_t *
1678 widget_get_cairo_surface(struct widget *widget)
1679 {
1680         struct surface *surface = widget->surface;
1681         struct window *window = widget->window;
1682
1683         assert(widget->use_cairo);
1684
1685         if (!surface->cairo_surface) {
1686                 if (surface == window->main_surface)
1687                         window_create_main_surface(window);
1688                 else
1689                         surface_create_surface(surface, 0);
1690         }
1691
1692         return surface->cairo_surface;
1693 }
1694
1695 static void
1696 widget_cairo_update_transform(struct widget *widget, cairo_t *cr)
1697 {
1698         struct surface *surface = widget->surface;
1699         double angle;
1700         cairo_matrix_t m;
1701         enum wl_output_transform transform;
1702         int surface_width, surface_height;
1703         int translate_x, translate_y;
1704         int32_t scale;
1705
1706         surface_width = surface->allocation.width;
1707         surface_height = surface->allocation.height;
1708
1709         transform = surface->buffer_transform;
1710         scale = surface->buffer_scale;
1711
1712         switch (transform) {
1713         case WL_OUTPUT_TRANSFORM_FLIPPED:
1714         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
1715         case WL_OUTPUT_TRANSFORM_FLIPPED_180:
1716         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
1717                 cairo_matrix_init(&m, -1, 0, 0, 1, 0, 0);
1718                 break;
1719         default:
1720                 cairo_matrix_init_identity(&m);
1721                 break;
1722         }
1723
1724         switch (transform) {
1725         case WL_OUTPUT_TRANSFORM_NORMAL:
1726         default:
1727                 angle = 0;
1728                 translate_x = 0;
1729                 translate_y = 0;
1730                 break;
1731         case WL_OUTPUT_TRANSFORM_FLIPPED:
1732                 angle = 0;
1733                 translate_x = surface_width;
1734                 translate_y = 0;
1735                 break;
1736         case WL_OUTPUT_TRANSFORM_90:
1737                 angle = M_PI_2;
1738                 translate_x = surface_height;
1739                 translate_y = 0;
1740                 break;
1741         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
1742                 angle = M_PI_2;
1743                 translate_x = surface_height;
1744                 translate_y = surface_width;
1745                 break;
1746         case WL_OUTPUT_TRANSFORM_180:
1747                 angle = M_PI;
1748                 translate_x = surface_width;
1749                 translate_y = surface_height;
1750                 break;
1751         case WL_OUTPUT_TRANSFORM_FLIPPED_180:
1752                 angle = M_PI;
1753                 translate_x = 0;
1754                 translate_y = surface_height;
1755                 break;
1756         case WL_OUTPUT_TRANSFORM_270:
1757                 angle = M_PI + M_PI_2;
1758                 translate_x = 0;
1759                 translate_y = surface_width;
1760                 break;
1761         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
1762                 angle = M_PI + M_PI_2;
1763                 translate_x = 0;
1764                 translate_y = 0;
1765                 break;
1766         }
1767
1768         cairo_scale(cr, scale, scale);
1769         cairo_translate(cr, translate_x, translate_y);
1770         cairo_rotate(cr, angle);
1771         cairo_transform(cr, &m);
1772 }
1773
1774 cairo_t *
1775 widget_cairo_create(struct widget *widget)
1776 {
1777         struct surface *surface = widget->surface;
1778         cairo_surface_t *cairo_surface;
1779         cairo_t *cr;
1780
1781         cairo_surface = widget_get_cairo_surface(widget);
1782         cr = cairo_create(cairo_surface);
1783
1784         widget_cairo_update_transform(widget, cr);
1785
1786         cairo_translate(cr, -surface->allocation.x, -surface->allocation.y);
1787
1788         return cr;
1789 }
1790
1791 struct wl_surface *
1792 widget_get_wl_surface(struct widget *widget)
1793 {
1794         return widget->surface->surface;
1795 }
1796
1797 struct wl_subsurface *
1798 widget_get_wl_subsurface(struct widget *widget)
1799 {
1800         return widget->surface->subsurface;
1801 }
1802
1803 uint32_t
1804 widget_get_last_time(struct widget *widget)
1805 {
1806         return widget->surface->last_time;
1807 }
1808
1809 void
1810 widget_input_region_add(struct widget *widget, const struct rectangle *rect)
1811 {
1812         struct wl_compositor *comp = widget->window->display->compositor;
1813         struct surface *surface = widget->surface;
1814
1815         if (!surface->input_region)
1816                 surface->input_region = wl_compositor_create_region(comp);
1817
1818         if (rect) {
1819                 wl_region_add(surface->input_region,
1820                               rect->x, rect->y, rect->width, rect->height);
1821         }
1822 }
1823
1824 void
1825 widget_set_resize_handler(struct widget *widget,
1826                           widget_resize_handler_t handler)
1827 {
1828         widget->resize_handler = handler;
1829 }
1830
1831 void
1832 widget_set_redraw_handler(struct widget *widget,
1833                           widget_redraw_handler_t handler)
1834 {
1835         widget->redraw_handler = handler;
1836 }
1837
1838 void
1839 widget_set_enter_handler(struct widget *widget, widget_enter_handler_t handler)
1840 {
1841         widget->enter_handler = handler;
1842 }
1843
1844 void
1845 widget_set_leave_handler(struct widget *widget, widget_leave_handler_t handler)
1846 {
1847         widget->leave_handler = handler;
1848 }
1849
1850 void
1851 widget_set_motion_handler(struct widget *widget,
1852                           widget_motion_handler_t handler)
1853 {
1854         widget->motion_handler = handler;
1855 }
1856
1857 void
1858 widget_set_button_handler(struct widget *widget,
1859                           widget_button_handler_t handler)
1860 {
1861         widget->button_handler = handler;
1862 }
1863
1864 void
1865 widget_set_touch_up_handler(struct widget *widget,
1866                             widget_touch_up_handler_t handler)
1867 {
1868         widget->touch_up_handler = handler;
1869 }
1870
1871 void
1872 widget_set_touch_down_handler(struct widget *widget,
1873                               widget_touch_down_handler_t handler)
1874 {
1875         widget->touch_down_handler = handler;
1876 }
1877
1878 void
1879 widget_set_touch_motion_handler(struct widget *widget,
1880                                 widget_touch_motion_handler_t handler)
1881 {
1882         widget->touch_motion_handler = handler;
1883 }
1884
1885 void
1886 widget_set_touch_frame_handler(struct widget *widget,
1887                                widget_touch_frame_handler_t handler)
1888 {
1889         widget->touch_frame_handler = handler;
1890 }
1891
1892 void
1893 widget_set_touch_cancel_handler(struct widget *widget,
1894                                 widget_touch_cancel_handler_t handler)
1895 {
1896         widget->touch_cancel_handler = handler;
1897 }
1898
1899 void
1900 widget_set_axis_handler(struct widget *widget,
1901                         widget_axis_handler_t handler)
1902 {
1903         widget->axis_handler = handler;
1904 }
1905
1906 static void
1907 window_schedule_redraw_task(struct window *window);
1908
1909 void
1910 widget_schedule_redraw(struct widget *widget)
1911 {
1912         DBG_OBJ(widget->surface->surface, "widget %p\n", widget);
1913         widget->surface->redraw_needed = 1;
1914         window_schedule_redraw_task(widget->window);
1915 }
1916
1917 void
1918 widget_set_use_cairo(struct widget *widget,
1919                      int use_cairo)
1920 {
1921         widget->use_cairo = use_cairo;
1922 }
1923
1924 cairo_surface_t *
1925 window_get_surface(struct window *window)
1926 {
1927         cairo_surface_t *cairo_surface;
1928
1929         cairo_surface = widget_get_cairo_surface(window->main_surface->widget);
1930
1931         return cairo_surface_reference(cairo_surface);
1932 }
1933
1934 struct wl_surface *
1935 window_get_wl_surface(struct window *window)
1936 {
1937         return window->main_surface->surface;
1938 }
1939
1940 static void
1941 tooltip_redraw_handler(struct widget *widget, void *data)
1942 {
1943         cairo_t *cr;
1944         const int32_t r = 3;
1945         struct tooltip *tooltip = data;
1946         int32_t width, height;
1947
1948         cr = widget_cairo_create(widget);
1949         cairo_translate(cr, widget->allocation.x, widget->allocation.y);
1950         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1951         cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1952         cairo_paint(cr);
1953
1954         width = widget->allocation.width;
1955         height = widget->allocation.height;
1956         rounded_rect(cr, 0, 0, width, height, r);
1957
1958         cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1959         cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8);
1960         cairo_fill(cr);
1961
1962         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1963         cairo_move_to(cr, 10, 16);
1964         cairo_show_text(cr, tooltip->entry);
1965         cairo_destroy(cr);
1966 }
1967
1968 static cairo_text_extents_t
1969 get_text_extents(struct display *display, struct tooltip *tooltip)
1970 {
1971         cairo_t *cr;
1972         cairo_text_extents_t extents;
1973
1974         /* Use the dummy_surface because tooltip's surface was not
1975          * created yet, and parent does not have a valid surface
1976          * outside repaint, either.
1977          */
1978         cr = cairo_create(display->dummy_surface);
1979         cairo_text_extents(cr, tooltip->entry, &extents);
1980         cairo_destroy(cr);
1981
1982         return extents;
1983 }
1984
1985 static int
1986 window_create_tooltip(struct tooltip *tooltip)
1987 {
1988         struct widget *parent = tooltip->parent;
1989         struct display *display = parent->window->display;
1990         const int offset_y = 27;
1991         const int margin = 3;
1992         cairo_text_extents_t extents;
1993
1994         if (tooltip->widget)
1995                 return 0;
1996
1997         tooltip->widget = window_add_subsurface(parent->window, tooltip, SUBSURFACE_DESYNCHRONIZED);
1998
1999         extents = get_text_extents(display, tooltip);
2000         widget_set_redraw_handler(tooltip->widget, tooltip_redraw_handler);
2001         widget_set_allocation(tooltip->widget,
2002                               tooltip->x, tooltip->y + offset_y,
2003                               extents.width + 20, 20 + margin * 2);
2004
2005         return 0;
2006 }
2007
2008 void
2009 widget_destroy_tooltip(struct widget *parent)
2010 {
2011         struct tooltip *tooltip = parent->tooltip;
2012
2013         parent->tooltip_count = 0;
2014         if (!tooltip)
2015                 return;
2016
2017         if (tooltip->widget) {
2018                 widget_destroy(tooltip->widget);
2019                 tooltip->widget = NULL;
2020         }
2021
2022         close(tooltip->tooltip_fd);
2023         free(tooltip->entry);
2024         free(tooltip);
2025         parent->tooltip = NULL;
2026 }
2027
2028 static void
2029 tooltip_func(struct task *task, uint32_t events)
2030 {
2031         struct tooltip *tooltip =
2032                 container_of(task, struct tooltip, tooltip_task);
2033         uint64_t exp;
2034
2035         if (read(tooltip->tooltip_fd, &exp, sizeof (uint64_t)) != sizeof (uint64_t))
2036                 abort();
2037         window_create_tooltip(tooltip);
2038 }
2039
2040 #define TOOLTIP_TIMEOUT 500
2041 static int
2042 tooltip_timer_reset(struct tooltip *tooltip)
2043 {
2044         struct itimerspec its;
2045
2046         its.it_interval.tv_sec = 0;
2047         its.it_interval.tv_nsec = 0;
2048         its.it_value.tv_sec = TOOLTIP_TIMEOUT / 1000;
2049         its.it_value.tv_nsec = (TOOLTIP_TIMEOUT % 1000) * 1000 * 1000;
2050         if (timerfd_settime(tooltip->tooltip_fd, 0, &its, NULL) < 0) {
2051                 fprintf(stderr, "could not set timerfd\n: %m");
2052                 return -1;
2053         }
2054
2055         return 0;
2056 }
2057
2058 int
2059 widget_set_tooltip(struct widget *parent, char *entry, float x, float y)
2060 {
2061         struct tooltip *tooltip = parent->tooltip;
2062
2063         parent->tooltip_count++;
2064         if (tooltip) {
2065                 tooltip->x = x;
2066                 tooltip->y = y;
2067                 tooltip_timer_reset(tooltip);
2068                 return 0;
2069         }
2070
2071         /* the handler might be triggered too fast via input device motion, so
2072          * we need this check here to make sure tooltip is fully initialized */
2073         if (parent->tooltip_count > 1)
2074                 return 0;
2075
2076         tooltip = malloc(sizeof *tooltip);
2077         if (!tooltip)
2078                 return -1;
2079
2080         parent->tooltip = tooltip;
2081         tooltip->parent = parent;
2082         tooltip->widget = NULL;
2083         tooltip->x = x;
2084         tooltip->y = y;
2085         tooltip->entry = strdup(entry);
2086         tooltip->tooltip_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
2087         if (tooltip->tooltip_fd < 0) {
2088                 fprintf(stderr, "could not create timerfd\n: %m");
2089                 return -1;
2090         }
2091
2092         tooltip->tooltip_task.run = tooltip_func;
2093         display_watch_fd(parent->window->display, tooltip->tooltip_fd,
2094                          EPOLLIN, &tooltip->tooltip_task);
2095         tooltip_timer_reset(tooltip);
2096
2097         return 0;
2098 }
2099
2100 static void
2101 workspace_manager_state(void *data,
2102                         struct workspace_manager *workspace_manager,
2103                         uint32_t current,
2104                         uint32_t count)
2105 {
2106         struct display *display = data;
2107
2108         display->workspace = current;
2109         display->workspace_count = count;
2110 }
2111
2112 static const struct workspace_manager_listener workspace_manager_listener = {
2113         workspace_manager_state
2114 };
2115
2116 static void
2117 frame_resize_handler(struct widget *widget,
2118                      int32_t width, int32_t height, void *data)
2119 {
2120         struct window_frame *frame = data;
2121         struct widget *child = frame->child;
2122         struct rectangle interior;
2123         struct rectangle input;
2124         struct rectangle opaque;
2125
2126         if (widget->window->fullscreen) {
2127                 interior.x = 0;
2128                 interior.y = 0;
2129                 interior.width = width;
2130                 interior.height = height;
2131         } else {
2132                 frame_resize(frame->frame, width, height);
2133                 frame_interior(frame->frame, &interior.x, &interior.y,
2134                                &interior.width, &interior.height);
2135         }
2136
2137         widget_set_allocation(child, interior.x, interior.y,
2138                               interior.width, interior.height);
2139
2140         if (child->resize_handler) {
2141                 child->resize_handler(child, interior.width, interior.height,
2142                                       child->user_data);
2143
2144                 if (widget->window->fullscreen) {
2145                         width = child->allocation.width;
2146                         height = child->allocation.height;
2147                 } else {
2148                         frame_resize_inside(frame->frame,
2149                                             child->allocation.width,
2150                                             child->allocation.height);
2151                         width = frame_width(frame->frame);
2152                         height = frame_height(frame->frame);
2153                 }
2154         }
2155
2156         widget_set_allocation(widget, 0, 0, width, height);
2157
2158         widget->surface->input_region =
2159                 wl_compositor_create_region(widget->window->display->compositor);
2160         if (!widget->window->fullscreen) {
2161                 frame_input_rect(frame->frame, &input.x, &input.y,
2162                                  &input.width, &input.height);
2163                 wl_region_add(widget->surface->input_region,
2164                               input.x, input.y, input.width, input.height);
2165         } else {
2166                 wl_region_add(widget->surface->input_region, 0, 0, width, height);
2167         }
2168
2169         widget_set_allocation(widget, 0, 0, width, height);
2170
2171         if (child->opaque) {
2172                 if (!widget->window->fullscreen) {
2173                         frame_opaque_rect(frame->frame, &opaque.x, &opaque.y,
2174                                           &opaque.width, &opaque.height);
2175
2176                         wl_region_add(widget->surface->opaque_region,
2177                                       opaque.x, opaque.y,
2178                                       opaque.width, opaque.height);
2179                 } else {
2180                         wl_region_add(widget->surface->opaque_region,
2181                                       0, 0, width, height);
2182                 }
2183         }
2184
2185
2186         widget_schedule_redraw(widget);
2187 }
2188
2189 static void
2190 frame_redraw_handler(struct widget *widget, void *data)
2191 {
2192         cairo_t *cr;
2193         struct window_frame *frame = data;
2194         struct window *window = widget->window;
2195
2196         if (window->fullscreen)
2197                 return;
2198
2199         cr = widget_cairo_create(widget);
2200
2201         frame_repaint(frame->frame, cr);
2202
2203         cairo_destroy(cr);
2204 }
2205
2206 static int
2207 frame_get_pointer_image_for_location(struct window_frame *frame,
2208                                      enum theme_location location)
2209 {
2210         struct window *window = frame->widget->window;
2211
2212         if (window->custom)
2213                 return CURSOR_LEFT_PTR;
2214
2215         switch (location) {
2216         case THEME_LOCATION_RESIZING_TOP:
2217                 return CURSOR_TOP;
2218         case THEME_LOCATION_RESIZING_BOTTOM:
2219                 return CURSOR_BOTTOM;
2220         case THEME_LOCATION_RESIZING_LEFT:
2221                 return CURSOR_LEFT;
2222         case THEME_LOCATION_RESIZING_RIGHT:
2223                 return CURSOR_RIGHT;
2224         case THEME_LOCATION_RESIZING_TOP_LEFT:
2225                 return CURSOR_TOP_LEFT;
2226         case THEME_LOCATION_RESIZING_TOP_RIGHT:
2227                 return CURSOR_TOP_RIGHT;
2228         case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
2229                 return CURSOR_BOTTOM_LEFT;
2230         case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
2231                 return CURSOR_BOTTOM_RIGHT;
2232         case THEME_LOCATION_EXTERIOR:
2233         case THEME_LOCATION_TITLEBAR:
2234         default:
2235                 return CURSOR_LEFT_PTR;
2236         }
2237 }
2238
2239 static void
2240 frame_menu_func(void *data, struct input *input, int index)
2241 {
2242         struct window *window = data;
2243         struct display *display;
2244
2245         switch (index) {
2246         case 0: /* close */
2247                 window_close(window);
2248                 break;
2249         case 1: /* move to workspace above */
2250                 display = window->display;
2251                 if (display->workspace > 0)
2252                         workspace_manager_move_surface(
2253                                 display->workspace_manager,
2254                                 window->main_surface->surface,
2255                                 display->workspace - 1);
2256                 break;
2257         case 2: /* move to workspace below */
2258                 display = window->display;
2259                 if (display->workspace < display->workspace_count - 1)
2260                         workspace_manager_move_surface(
2261                                 display->workspace_manager,
2262                                 window->main_surface->surface,
2263                                 display->workspace + 1);
2264                 break;
2265         case 3: /* fullscreen */
2266                 /* we don't have a way to get out of fullscreen for now */
2267                 if (window->fullscreen_handler)
2268                         window->fullscreen_handler(window, window->user_data);
2269                 break;
2270         }
2271 }
2272
2273 void
2274 window_show_frame_menu(struct window *window,
2275                        struct input *input, uint32_t time)
2276 {
2277         int32_t x, y;
2278         int count;
2279
2280         static const char *entries[] = {
2281                 "Close",
2282                 "Move to workspace above", "Move to workspace below",
2283                 "Fullscreen"
2284         };
2285
2286         if (window->fullscreen_handler)
2287                 count = ARRAY_LENGTH(entries);
2288         else
2289                 count = ARRAY_LENGTH(entries) - 1;
2290
2291         input_get_position(input, &x, &y);
2292         window_show_menu(window->display, input, time, window,
2293                          x - 10, y - 10, frame_menu_func, entries, count);
2294 }
2295
2296 static int
2297 frame_enter_handler(struct widget *widget,
2298                     struct input *input, float x, float y, void *data)
2299 {
2300         struct window_frame *frame = data;
2301         enum theme_location location;
2302
2303         location = frame_pointer_enter(frame->frame, input, x, y);
2304         if (frame_status(frame->frame) & FRAME_STATUS_REPAINT)
2305                 widget_schedule_redraw(frame->widget);
2306
2307         return frame_get_pointer_image_for_location(data, location);
2308 }
2309
2310 static int
2311 frame_motion_handler(struct widget *widget,
2312                      struct input *input, uint32_t time,
2313                      float x, float y, void *data)
2314 {
2315         struct window_frame *frame = data;
2316         enum theme_location location;
2317
2318         location = frame_pointer_motion(frame->frame, input, x, y);
2319         if (frame_status(frame->frame) & FRAME_STATUS_REPAINT)
2320                 widget_schedule_redraw(frame->widget);
2321
2322         return frame_get_pointer_image_for_location(data, location);
2323 }
2324
2325 static void
2326 frame_leave_handler(struct widget *widget,
2327                     struct input *input, void *data)
2328 {
2329         struct window_frame *frame = data;
2330
2331         frame_pointer_leave(frame->frame, input);
2332         if (frame_status(frame->frame) & FRAME_STATUS_REPAINT)
2333                 widget_schedule_redraw(frame->widget);
2334 }
2335
2336 static void
2337 frame_handle_status(struct window_frame *frame, struct input *input,
2338                     uint32_t time, enum theme_location location)
2339 {
2340         struct window *window = frame->widget->window;
2341         uint32_t status;
2342
2343         status = frame_status(frame->frame);
2344         if (status & FRAME_STATUS_REPAINT)
2345                 widget_schedule_redraw(frame->widget);
2346
2347         if (status & FRAME_STATUS_MINIMIZE) {
2348                 window_set_minimized(window);
2349                 frame_status_clear(frame->frame, FRAME_STATUS_MINIMIZE);
2350         }
2351
2352         if (status & FRAME_STATUS_MENU) {
2353                 window_show_frame_menu(window, input, time);
2354                 frame_status_clear(frame->frame, FRAME_STATUS_MENU);
2355         }
2356
2357         if (status & FRAME_STATUS_MAXIMIZE) {
2358                 window_set_maximized(window, !window->maximized);
2359                 frame_status_clear(frame->frame, FRAME_STATUS_MAXIMIZE);
2360         }
2361
2362         if (status & FRAME_STATUS_CLOSE) {
2363                 window_close(window);
2364                 return;
2365         }
2366
2367         if ((status & FRAME_STATUS_MOVE) && window->xdg_surface) {
2368                 input_ungrab(input);
2369                 xdg_surface_move(window->xdg_surface,
2370                                  input_get_seat(input),
2371                                  window->display->serial);
2372
2373                 frame_status_clear(frame->frame, FRAME_STATUS_MOVE);
2374         }
2375
2376         if ((status & FRAME_STATUS_RESIZE) && window->xdg_surface) {
2377                 input_ungrab(input);
2378
2379                 xdg_surface_resize(window->xdg_surface,
2380                                    input_get_seat(input),
2381                                    window->display->serial,
2382                                    location);
2383
2384                 frame_status_clear(frame->frame, FRAME_STATUS_RESIZE);
2385         }
2386 }
2387
2388 #define DOUBLE_CLICK_PERIOD 250
2389 static void
2390 frame_button_handler(struct widget *widget,
2391                      struct input *input, uint32_t time,
2392                      uint32_t button, enum wl_pointer_button_state state,
2393                      void *data)
2394
2395 {
2396         struct window_frame *frame = data;
2397         enum theme_location location;
2398
2399         frame->double_click = 0;
2400         if (state == WL_POINTER_BUTTON_STATE_PRESSED) {
2401                 if (time - frame->last_time <= DOUBLE_CLICK_PERIOD) {
2402                         frame->double_click = 1;
2403                         frame->did_double = 1;
2404                 } else
2405                         frame->did_double = 0;
2406
2407                 frame->last_time = time;
2408         } else if (frame->did_double == 1) {
2409                 frame->double_click = 1;
2410                 frame->did_double = 0;
2411         }
2412
2413         if (frame->double_click)
2414                 location = frame_double_click(frame->frame, input,
2415                                               button, state);
2416         else
2417                 location = frame_pointer_button(frame->frame, input,
2418                                                 button, state);
2419
2420         frame_handle_status(frame, input, time, location);
2421 }
2422
2423 static void
2424 frame_touch_down_handler(struct widget *widget, struct input *input,
2425                          uint32_t serial, uint32_t time, int32_t id,
2426                          float x, float y, void *data)
2427 {
2428         struct window_frame *frame = data;
2429
2430         frame_touch_down(frame->frame, input, id, x, y);
2431         frame_handle_status(frame, input, time, THEME_LOCATION_CLIENT_AREA);
2432 }
2433
2434 static void
2435 frame_touch_up_handler(struct widget *widget,
2436                          struct input *input, uint32_t serial, uint32_t time,
2437                          int32_t id, void *data)
2438 {
2439         struct window_frame *frame = data;
2440
2441         frame_touch_up(frame->frame, input, id);
2442         frame_handle_status(frame, input, time, THEME_LOCATION_CLIENT_AREA);
2443 }
2444
2445 struct widget *
2446 window_frame_create(struct window *window, void *data)
2447 {
2448         struct window_frame *frame;
2449         uint32_t buttons;
2450
2451         if (window->custom) {
2452                 buttons = FRAME_BUTTON_NONE;
2453         } else {
2454                 buttons = FRAME_BUTTON_ALL;
2455         }
2456
2457         frame = xzalloc(sizeof *frame);
2458         frame->frame = frame_create(window->display->theme, 0, 0,
2459                                     buttons, window->title);
2460
2461         frame->widget = window_add_widget(window, frame);
2462         frame->child = widget_add_widget(frame->widget, data);
2463
2464         widget_set_redraw_handler(frame->widget, frame_redraw_handler);
2465         widget_set_resize_handler(frame->widget, frame_resize_handler);
2466         widget_set_enter_handler(frame->widget, frame_enter_handler);
2467         widget_set_leave_handler(frame->widget, frame_leave_handler);
2468         widget_set_motion_handler(frame->widget, frame_motion_handler);
2469         widget_set_button_handler(frame->widget, frame_button_handler);
2470         widget_set_touch_down_handler(frame->widget, frame_touch_down_handler);
2471         widget_set_touch_up_handler(frame->widget, frame_touch_up_handler);
2472
2473         window->frame = frame;
2474
2475         return frame->child;
2476 }
2477
2478 void
2479 window_frame_set_child_size(struct widget *widget, int child_width,
2480                             int child_height)
2481 {
2482         struct display *display = widget->window->display;
2483         struct theme *t = display->theme;
2484         int decoration_width, decoration_height;
2485         int width, height;
2486         int margin = widget->window->maximized ? 0 : t->margin;
2487
2488         if (!widget->window->fullscreen) {
2489                 decoration_width = (t->width + margin) * 2;
2490                 decoration_height = t->width +
2491                         t->titlebar_height + margin * 2;
2492
2493                 width = child_width + decoration_width;
2494                 height = child_height + decoration_height;
2495         } else {
2496                 width = child_width;
2497                 height = child_height;
2498         }
2499
2500         window_schedule_resize(widget->window, width, height);
2501 }
2502
2503 static void
2504 window_frame_destroy(struct window_frame *frame)
2505 {
2506         frame_destroy(frame->frame);
2507
2508         /* frame->child must be destroyed by the application */
2509         widget_destroy(frame->widget);
2510         free(frame);
2511 }
2512
2513 static void
2514 input_set_focus_widget(struct input *input, struct widget *focus,
2515                        float x, float y)
2516 {
2517         struct widget *old, *widget;
2518         int cursor;
2519
2520         if (focus == input->focus_widget)
2521                 return;
2522
2523         old = input->focus_widget;
2524         if (old) {
2525                 widget = old;
2526                 if (input->grab)
2527                         widget = input->grab;
2528                 if (widget->leave_handler)
2529                         widget->leave_handler(old, input, widget->user_data);
2530                 input->focus_widget = NULL;
2531         }
2532
2533         if (focus) {
2534                 widget = focus;
2535                 if (input->grab)
2536                         widget = input->grab;
2537                 input->focus_widget = focus;
2538                 if (widget->enter_handler)
2539                         cursor = widget->enter_handler(focus, input, x, y,
2540                                                        widget->user_data);
2541                 else
2542                         cursor = widget->default_cursor;
2543
2544                 input_set_pointer_image(input, cursor);
2545         }
2546 }
2547
2548 void
2549 touch_grab(struct input  *input, int32_t touch_id)
2550 {
2551         input->touch_grab = 1;
2552         input->touch_grab_id = touch_id;
2553 }
2554
2555 void
2556 touch_ungrab(struct input *input)
2557 {
2558         struct touch_point *tp, *tmp;
2559
2560         input->touch_grab = 0;
2561
2562         wl_list_for_each_safe(tp, tmp,
2563                         &input->touch_point_list, link) {
2564                 if (tp->id != input->touch_grab_id)
2565                         continue;
2566                 wl_list_remove(&tp->link);
2567                 free(tp);
2568
2569                 return;
2570         }
2571 }
2572
2573 void
2574 input_grab(struct input *input, struct widget *widget, uint32_t button)
2575 {
2576         input->grab = widget;
2577         input->grab_button = button;
2578
2579         input_set_focus_widget(input, widget, input->sx, input->sy);
2580 }
2581
2582 void
2583 input_ungrab(struct input *input)
2584 {
2585         struct widget *widget;
2586
2587         input->grab = NULL;
2588         if (input->pointer_focus) {
2589                 widget = window_find_widget(input->pointer_focus,
2590                                             input->sx, input->sy);
2591                 input_set_focus_widget(input, widget, input->sx, input->sy);
2592         }
2593 }
2594
2595 static void
2596 input_remove_pointer_focus(struct input *input)
2597 {
2598         struct window *window = input->pointer_focus;
2599
2600         if (!window)
2601                 return;
2602
2603         input_set_focus_widget(input, NULL, 0, 0);
2604
2605         input->pointer_focus = NULL;
2606         input->current_cursor = CURSOR_UNSET;
2607 }
2608
2609 static void
2610 pointer_handle_enter(void *data, struct wl_pointer *pointer,
2611                      uint32_t serial, struct wl_surface *surface,
2612                      wl_fixed_t sx_w, wl_fixed_t sy_w)
2613 {
2614         struct input *input = data;
2615         struct window *window;
2616         struct widget *widget;
2617         float sx = wl_fixed_to_double(sx_w);
2618         float sy = wl_fixed_to_double(sy_w);
2619
2620         if (!surface) {
2621                 /* enter event for a window we've just destroyed */
2622                 return;
2623         }
2624
2625         window = wl_surface_get_user_data(surface);
2626         if (surface != window->main_surface->surface) {
2627                 DBG("Ignoring input event from subsurface %p\n", surface);
2628                 return;
2629         }
2630
2631         input->display->serial = serial;
2632         input->pointer_enter_serial = serial;
2633         input->pointer_focus = window;
2634
2635         input->sx = sx;
2636         input->sy = sy;
2637
2638         widget = window_find_widget(window, sx, sy);
2639         input_set_focus_widget(input, widget, sx, sy);
2640 }
2641
2642 static void
2643 pointer_handle_leave(void *data, struct wl_pointer *pointer,
2644                      uint32_t serial, struct wl_surface *surface)
2645 {
2646         struct input *input = data;
2647
2648         input->display->serial = serial;
2649         input_remove_pointer_focus(input);
2650 }
2651
2652 static void
2653 pointer_handle_motion(void *data, struct wl_pointer *pointer,
2654                       uint32_t time, wl_fixed_t sx_w, wl_fixed_t sy_w)
2655 {
2656         struct input *input = data;
2657         struct window *window = input->pointer_focus;
2658         struct widget *widget;
2659         int cursor;
2660         float sx = wl_fixed_to_double(sx_w);
2661         float sy = wl_fixed_to_double(sy_w);
2662
2663         if (!window)
2664                 return;
2665
2666         input->sx = sx;
2667         input->sy = sy;
2668
2669         /* when making the window smaller - e.g. after a unmaximise we might
2670          * still have a pending motion event that the compositor has picked
2671          * based on the old surface dimensions
2672          */
2673         if (sx > window->main_surface->allocation.width ||
2674             sy > window->main_surface->allocation.height)
2675                 return;
2676
2677         if (!(input->grab && input->grab_button)) {
2678                 widget = window_find_widget(window, sx, sy);
2679                 input_set_focus_widget(input, widget, sx, sy);
2680         }
2681
2682         if (input->grab)
2683                 widget = input->grab;
2684         else
2685                 widget = input->focus_widget;
2686         if (widget) {
2687                 if (widget->motion_handler)
2688                         cursor = widget->motion_handler(input->focus_widget,
2689                                                         input, time, sx, sy,
2690                                                         widget->user_data);
2691                 else
2692                         cursor = widget->default_cursor;
2693         } else
2694                 cursor = CURSOR_LEFT_PTR;
2695
2696         input_set_pointer_image(input, cursor);
2697 }
2698
2699 static void
2700 pointer_handle_button(void *data, struct wl_pointer *pointer, uint32_t serial,
2701                       uint32_t time, uint32_t button, uint32_t state_w)
2702 {
2703         struct input *input = data;
2704         struct widget *widget;
2705         enum wl_pointer_button_state state = state_w;
2706
2707         input->display->serial = serial;
2708         if (input->focus_widget && input->grab == NULL &&
2709             state == WL_POINTER_BUTTON_STATE_PRESSED)
2710                 input_grab(input, input->focus_widget, button);
2711
2712         widget = input->grab;
2713         if (widget && widget->button_handler)
2714                 (*widget->button_handler)(widget,
2715                                           input, time,
2716                                           button, state,
2717                                           input->grab->user_data);
2718
2719         if (input->grab && input->grab_button == button &&
2720             state == WL_POINTER_BUTTON_STATE_RELEASED)
2721                 input_ungrab(input);
2722 }
2723
2724 static void
2725 pointer_handle_axis(void *data, struct wl_pointer *pointer,
2726                     uint32_t time, uint32_t axis, wl_fixed_t value)
2727 {
2728         struct input *input = data;
2729         struct widget *widget;
2730
2731         widget = input->focus_widget;
2732         if (input->grab)
2733                 widget = input->grab;
2734         if (widget && widget->axis_handler)
2735                 (*widget->axis_handler)(widget,
2736                                         input, time,
2737                                         axis, value,
2738                                         widget->user_data);
2739 }
2740
2741 static const struct wl_pointer_listener pointer_listener = {
2742         pointer_handle_enter,
2743         pointer_handle_leave,
2744         pointer_handle_motion,
2745         pointer_handle_button,
2746         pointer_handle_axis,
2747 };
2748
2749 static void
2750 input_remove_keyboard_focus(struct input *input)
2751 {
2752         struct window *window = input->keyboard_focus;
2753         struct itimerspec its;
2754
2755         its.it_interval.tv_sec = 0;
2756         its.it_interval.tv_nsec = 0;
2757         its.it_value.tv_sec = 0;
2758         its.it_value.tv_nsec = 0;
2759         timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
2760
2761         if (!window)
2762                 return;
2763
2764         if (window->keyboard_focus_handler)
2765                 (*window->keyboard_focus_handler)(window, NULL,
2766                                                   window->user_data);
2767
2768         input->keyboard_focus = NULL;
2769 }
2770
2771 static void
2772 keyboard_repeat_func(struct task *task, uint32_t events)
2773 {
2774         struct input *input =
2775                 container_of(task, struct input, repeat_task);
2776         struct window *window = input->keyboard_focus;
2777         uint64_t exp;
2778
2779         if (read(input->repeat_timer_fd, &exp, sizeof exp) != sizeof exp)
2780                 /* If we change the timer between the fd becoming
2781                  * readable and getting here, there'll be nothing to
2782                  * read and we get EAGAIN. */
2783                 return;
2784
2785         if (window && window->key_handler) {
2786                 (*window->key_handler)(window, input, input->repeat_time,
2787                                        input->repeat_key, input->repeat_sym,
2788                                        WL_KEYBOARD_KEY_STATE_PRESSED,
2789                                        window->user_data);
2790         }
2791 }
2792
2793 static void
2794 keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
2795                        uint32_t format, int fd, uint32_t size)
2796 {
2797         struct input *input = data;
2798         struct xkb_keymap *keymap;
2799         struct xkb_state *state;
2800         char *map_str;
2801
2802         if (!data) {
2803                 close(fd);
2804                 return;
2805         }
2806
2807         if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
2808                 close(fd);
2809                 return;
2810         }
2811
2812         map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
2813         if (map_str == MAP_FAILED) {
2814                 close(fd);
2815                 return;
2816         }
2817
2818         keymap = xkb_keymap_new_from_string(input->display->xkb_context,
2819                                             map_str,
2820                                             XKB_KEYMAP_FORMAT_TEXT_V1,
2821                                             0);
2822         munmap(map_str, size);
2823         close(fd);
2824
2825         if (!keymap) {
2826                 fprintf(stderr, "failed to compile keymap\n");
2827                 return;
2828         }
2829
2830         state = xkb_state_new(keymap);
2831         if (!state) {
2832                 fprintf(stderr, "failed to create XKB state\n");
2833                 xkb_keymap_unref(keymap);
2834                 return;
2835         }
2836
2837         xkb_keymap_unref(input->xkb.keymap);
2838         xkb_state_unref(input->xkb.state);
2839         input->xkb.keymap = keymap;
2840         input->xkb.state = state;
2841
2842         input->xkb.control_mask =
2843                 1 << xkb_keymap_mod_get_index(input->xkb.keymap, "Control");
2844         input->xkb.alt_mask =
2845                 1 << xkb_keymap_mod_get_index(input->xkb.keymap, "Mod1");
2846         input->xkb.shift_mask =
2847                 1 << xkb_keymap_mod_get_index(input->xkb.keymap, "Shift");
2848 }
2849
2850 static void
2851 keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
2852                       uint32_t serial, struct wl_surface *surface,
2853                       struct wl_array *keys)
2854 {
2855         struct input *input = data;
2856         struct window *window;
2857
2858         input->display->serial = serial;
2859         input->keyboard_focus = wl_surface_get_user_data(surface);
2860
2861         window = input->keyboard_focus;
2862         if (window->keyboard_focus_handler)
2863                 (*window->keyboard_focus_handler)(window,
2864                                                   input, window->user_data);
2865 }
2866
2867 static void
2868 keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,
2869                       uint32_t serial, struct wl_surface *surface)
2870 {
2871         struct input *input = data;
2872
2873         input->display->serial = serial;
2874         input_remove_keyboard_focus(input);
2875 }
2876
2877 static void
2878 keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
2879                     uint32_t serial, uint32_t time, uint32_t key,
2880                     uint32_t state_w)
2881 {
2882         struct input *input = data;
2883         struct window *window = input->keyboard_focus;
2884         uint32_t code, num_syms;
2885         enum wl_keyboard_key_state state = state_w;
2886         const xkb_keysym_t *syms;
2887         xkb_keysym_t sym;
2888         struct itimerspec its;
2889
2890         input->display->serial = serial;
2891         code = key + 8;
2892         if (!window || !input->xkb.state)
2893                 return;
2894
2895         /* We only use input grabs for pointer events for now, so just
2896          * ignore key presses if a grab is active.  We expand the key
2897          * event delivery mechanism to route events to widgets to
2898          * properly handle key grabs.  In the meantime, this prevents
2899          * key event devlivery while a grab is active. */
2900         if (input->grab && input->grab_button == 0)
2901                 return;
2902
2903         num_syms = xkb_state_key_get_syms(input->xkb.state, code, &syms);
2904
2905         sym = XKB_KEY_NoSymbol;
2906         if (num_syms == 1)
2907                 sym = syms[0];
2908
2909
2910         if (sym == XKB_KEY_F5 && input->modifiers == MOD_ALT_MASK) {
2911                 if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
2912                         window_set_maximized(window, !window->maximized);
2913         } else if (sym == XKB_KEY_F11 &&
2914                    window->fullscreen_handler &&
2915                    state == WL_KEYBOARD_KEY_STATE_PRESSED) {
2916                 window->fullscreen_handler(window, window->user_data);
2917         } else if (sym == XKB_KEY_F4 &&
2918                    input->modifiers == MOD_ALT_MASK &&
2919                    state == WL_KEYBOARD_KEY_STATE_PRESSED) {
2920                 window_close(window);
2921         } else if (window->key_handler) {
2922                 (*window->key_handler)(window, input, time, key,
2923                                        sym, state, window->user_data);
2924         }
2925
2926         if (state == WL_KEYBOARD_KEY_STATE_RELEASED &&
2927             key == input->repeat_key) {
2928                 its.it_interval.tv_sec = 0;
2929                 its.it_interval.tv_nsec = 0;
2930                 its.it_value.tv_sec = 0;
2931                 its.it_value.tv_nsec = 0;
2932                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
2933         } else if (state == WL_KEYBOARD_KEY_STATE_PRESSED &&
2934                    xkb_keymap_key_repeats(input->xkb.keymap, code)) {
2935                 input->repeat_sym = sym;
2936                 input->repeat_key = key;
2937                 input->repeat_time = time;
2938                 its.it_interval.tv_sec = input->repeat_rate_sec;
2939                 its.it_interval.tv_nsec = input->repeat_rate_nsec;
2940                 its.it_value.tv_sec = input->repeat_delay_sec;
2941                 its.it_value.tv_nsec = input->repeat_delay_nsec;
2942                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
2943         }
2944 }
2945
2946 static void
2947 keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
2948                           uint32_t serial, uint32_t mods_depressed,
2949                           uint32_t mods_latched, uint32_t mods_locked,
2950                           uint32_t group)
2951 {
2952         struct input *input = data;
2953         xkb_mod_mask_t mask;
2954
2955         /* If we're not using a keymap, then we don't handle PC-style modifiers */
2956         if (!input->xkb.keymap)
2957                 return;
2958
2959         xkb_state_update_mask(input->xkb.state, mods_depressed, mods_latched,
2960                               mods_locked, 0, 0, group);
2961         mask = xkb_state_serialize_mods(input->xkb.state,
2962                                         XKB_STATE_MODS_DEPRESSED |
2963                                         XKB_STATE_MODS_LATCHED);
2964         input->modifiers = 0;
2965         if (mask & input->xkb.control_mask)
2966                 input->modifiers |= MOD_CONTROL_MASK;
2967         if (mask & input->xkb.alt_mask)
2968                 input->modifiers |= MOD_ALT_MASK;
2969         if (mask & input->xkb.shift_mask)
2970                 input->modifiers |= MOD_SHIFT_MASK;
2971 }
2972
2973 static void
2974 set_repeat_info(struct input *input, int32_t rate, int32_t delay)
2975 {
2976         input->repeat_rate_sec = input->repeat_rate_nsec = 0;
2977         input->repeat_delay_sec = input->repeat_delay_nsec = 0;
2978
2979         /* a rate of zero disables any repeating, regardless of the delay's
2980          * value */
2981         if (rate == 0)
2982                 return;
2983
2984         if (rate == 1)
2985                 input->repeat_rate_sec = 1;
2986         else
2987                 input->repeat_rate_nsec = 1000000000 / rate;
2988
2989         input->repeat_delay_sec = delay / 1000;
2990         delay -= (input->repeat_delay_sec * 1000);
2991         input->repeat_delay_nsec = delay * 1000 * 1000;
2992 }
2993
2994 static void
2995 keyboard_handle_repeat_info(void *data, struct wl_keyboard *keyboard,
2996                             int32_t rate, int32_t delay)
2997 {
2998         struct input *input = data;
2999
3000         set_repeat_info(input, rate, delay);
3001 }
3002
3003 static const struct wl_keyboard_listener keyboard_listener = {
3004         keyboard_handle_keymap,
3005         keyboard_handle_enter,
3006         keyboard_handle_leave,
3007         keyboard_handle_key,
3008         keyboard_handle_modifiers,
3009         keyboard_handle_repeat_info
3010
3011 };
3012
3013 static void
3014 touch_handle_down(void *data, struct wl_touch *wl_touch,
3015                   uint32_t serial, uint32_t time, struct wl_surface *surface,
3016                   int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
3017 {
3018         struct input *input = data;
3019         struct widget *widget;
3020         float sx = wl_fixed_to_double(x_w);
3021         float sy = wl_fixed_to_double(y_w);
3022
3023         input->display->serial = serial;
3024         input->touch_focus = wl_surface_get_user_data(surface);
3025         if (!input->touch_focus) {
3026                 DBG("Failed to find to touch focus for surface %p\n", surface);
3027                 return;
3028         }
3029
3030         if (surface != input->touch_focus->main_surface->surface) {
3031                 DBG("Ignoring input event from subsurface %p\n", surface);
3032                 input->touch_focus = NULL;
3033                 return;
3034         }
3035
3036         if (input->grab)
3037                 widget = input->grab;
3038         else
3039                 widget = window_find_widget(input->touch_focus,
3040                                             wl_fixed_to_double(x_w),
3041                                             wl_fixed_to_double(y_w));
3042         if (widget) {
3043                 struct touch_point *tp = xmalloc(sizeof *tp);
3044                 if (tp) {
3045                         tp->id = id;
3046                         tp->widget = widget;
3047                         tp->x = sx;
3048                         tp->y = sy;
3049                         wl_list_insert(&input->touch_point_list, &tp->link);
3050
3051                         if (widget->touch_down_handler)
3052                                 (*widget->touch_down_handler)(widget, input,
3053                                                               serial, time, id,
3054                                                               sx, sy,
3055                                                               widget->user_data);
3056                 }
3057         }
3058 }
3059
3060 static void
3061 touch_handle_up(void *data, struct wl_touch *wl_touch,
3062                 uint32_t serial, uint32_t time, int32_t id)
3063 {
3064         struct input *input = data;
3065         struct touch_point *tp, *tmp;
3066
3067         if (!input->touch_focus) {
3068                 DBG("No touch focus found for touch up event!\n");
3069                 return;
3070         }
3071
3072         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3073                 if (tp->id != id)
3074                         continue;
3075
3076                 if (tp->widget->touch_up_handler)
3077                         (*tp->widget->touch_up_handler)(tp->widget, input, serial,
3078                                                         time, id,
3079                                                         tp->widget->user_data);
3080
3081                 wl_list_remove(&tp->link);
3082                 free(tp);
3083
3084                 return;
3085         }
3086 }
3087
3088 static void
3089 touch_handle_motion(void *data, struct wl_touch *wl_touch,
3090                     uint32_t time, int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
3091 {
3092         struct input *input = data;
3093         struct touch_point *tp;
3094         float sx = wl_fixed_to_double(x_w);
3095         float sy = wl_fixed_to_double(y_w);
3096
3097         DBG("touch_handle_motion: %i %i\n", id, wl_list_length(&input->touch_point_list));
3098
3099         if (!input->touch_focus) {
3100                 DBG("No touch focus found for touch motion event!\n");
3101                 return;
3102         }
3103
3104         wl_list_for_each(tp, &input->touch_point_list, link) {
3105                 if (tp->id != id)
3106                         continue;
3107
3108                 tp->x = sx;
3109                 tp->y = sy;
3110                 if (tp->widget->touch_motion_handler)
3111                         (*tp->widget->touch_motion_handler)(tp->widget, input, time,
3112                                                             id, sx, sy,
3113                                                             tp->widget->user_data);
3114                 return;
3115         }
3116 }
3117
3118 static void
3119 touch_handle_frame(void *data, struct wl_touch *wl_touch)
3120 {
3121         struct input *input = data;
3122         struct touch_point *tp, *tmp;
3123
3124         DBG("touch_handle_frame\n");
3125
3126         if (!input->touch_focus) {
3127                 DBG("No touch focus found for touch frame event!\n");
3128                 return;
3129         }
3130
3131         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3132                 if (tp->widget->touch_frame_handler)
3133                         (*tp->widget->touch_frame_handler)(tp->widget, input,
3134                                                            tp->widget->user_data);
3135         }
3136 }
3137
3138 static void
3139 touch_handle_cancel(void *data, struct wl_touch *wl_touch)
3140 {
3141         struct input *input = data;
3142         struct touch_point *tp, *tmp;
3143
3144         DBG("touch_handle_cancel\n");
3145
3146         if (!input->touch_focus) {
3147                 DBG("No touch focus found for touch cancel event!\n");
3148                 return;
3149         }
3150
3151         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3152                 if (tp->widget->touch_cancel_handler)
3153                         (*tp->widget->touch_cancel_handler)(tp->widget, input,
3154                                                             tp->widget->user_data);
3155
3156                 wl_list_remove(&tp->link);
3157                 free(tp);
3158         }
3159 }
3160
3161 static const struct wl_touch_listener touch_listener = {
3162         touch_handle_down,
3163         touch_handle_up,
3164         touch_handle_motion,
3165         touch_handle_frame,
3166         touch_handle_cancel,
3167 };
3168
3169 static void
3170 seat_handle_capabilities(void *data, struct wl_seat *seat,
3171                          enum wl_seat_capability caps)
3172 {
3173         struct input *input = data;
3174
3175         if ((caps & WL_SEAT_CAPABILITY_POINTER) && !input->pointer) {
3176                 input->pointer = wl_seat_get_pointer(seat);
3177                 wl_pointer_set_user_data(input->pointer, input);
3178                 wl_pointer_add_listener(input->pointer, &pointer_listener,
3179                                         input);
3180         } else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && input->pointer) {
3181                 wl_pointer_destroy(input->pointer);
3182                 input->pointer = NULL;
3183         }
3184
3185         if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
3186                 input->keyboard = wl_seat_get_keyboard(seat);
3187                 wl_keyboard_set_user_data(input->keyboard, input);
3188                 wl_keyboard_add_listener(input->keyboard, &keyboard_listener,
3189                                          input);
3190         } else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) {
3191                 wl_keyboard_destroy(input->keyboard);
3192                 input->keyboard = NULL;
3193         }
3194
3195         if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !input->touch) {
3196                 input->touch = wl_seat_get_touch(seat);
3197                 wl_touch_set_user_data(input->touch, input);
3198                 wl_touch_add_listener(input->touch, &touch_listener, input);
3199         } else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && input->touch) {
3200                 wl_touch_destroy(input->touch);
3201                 input->touch = NULL;
3202         }
3203 }
3204
3205 static void
3206 seat_handle_name(void *data, struct wl_seat *seat,
3207                  const char *name)
3208 {
3209
3210 }
3211
3212 static const struct wl_seat_listener seat_listener = {
3213         seat_handle_capabilities,
3214         seat_handle_name
3215 };
3216
3217 void
3218 input_get_position(struct input *input, int32_t *x, int32_t *y)
3219 {
3220         *x = input->sx;
3221         *y = input->sy;
3222 }
3223
3224 int
3225 input_get_touch(struct input *input, int32_t id, float *x, float *y)
3226 {
3227         struct touch_point *tp;
3228
3229         wl_list_for_each(tp, &input->touch_point_list, link) {
3230                 if (tp->id != id)
3231                         continue;
3232
3233                 *x = tp->x;
3234                 *y = tp->y;
3235                 return 0;
3236         }
3237
3238         return -1;
3239 }
3240
3241 struct display *
3242 input_get_display(struct input *input)
3243 {
3244         return input->display;
3245 }
3246
3247 struct wl_seat *
3248 input_get_seat(struct input *input)
3249 {
3250         return input->seat;
3251 }
3252
3253 uint32_t
3254 input_get_modifiers(struct input *input)
3255 {
3256         return input->modifiers;
3257 }
3258
3259 struct widget *
3260 input_get_focus_widget(struct input *input)
3261 {
3262         return input->focus_widget;
3263 }
3264
3265 struct data_offer {
3266         struct wl_data_offer *offer;
3267         struct input *input;
3268         struct wl_array types;
3269         int refcount;
3270
3271         struct task io_task;
3272         int fd;
3273         data_func_t func;
3274         int32_t x, y;
3275         void *user_data;
3276 };
3277
3278 static void
3279 data_offer_offer(void *data, struct wl_data_offer *wl_data_offer, const char *type)
3280 {
3281         struct data_offer *offer = data;
3282         char **p;
3283
3284         p = wl_array_add(&offer->types, sizeof *p);
3285         *p = strdup(type);
3286 }
3287
3288 static const struct wl_data_offer_listener data_offer_listener = {
3289         data_offer_offer,
3290 };
3291
3292 static void
3293 data_offer_destroy(struct data_offer *offer)
3294 {
3295         char **p;
3296
3297         offer->refcount--;
3298         if (offer->refcount == 0) {
3299                 wl_data_offer_destroy(offer->offer);
3300                 for (p = offer->types.data; *p; p++)
3301                         free(*p);
3302                 wl_array_release(&offer->types);
3303                 free(offer);
3304         }
3305 }
3306
3307 static void
3308 data_device_data_offer(void *data,
3309                        struct wl_data_device *data_device,
3310                        struct wl_data_offer *_offer)
3311 {
3312         struct data_offer *offer;
3313
3314         offer = xmalloc(sizeof *offer);
3315
3316         wl_array_init(&offer->types);
3317         offer->refcount = 1;
3318         offer->input = data;
3319         offer->offer = _offer;
3320         wl_data_offer_add_listener(offer->offer,
3321                                    &data_offer_listener, offer);
3322 }
3323
3324 static void
3325 data_device_enter(void *data, struct wl_data_device *data_device,
3326                   uint32_t serial, struct wl_surface *surface,
3327                   wl_fixed_t x_w, wl_fixed_t y_w,
3328                   struct wl_data_offer *offer)
3329 {
3330         struct input *input = data;
3331         struct window *window;
3332         void *types_data;
3333         float x = wl_fixed_to_double(x_w);
3334         float y = wl_fixed_to_double(y_w);
3335         char **p;
3336
3337         window = wl_surface_get_user_data(surface);
3338         input->drag_enter_serial = serial;
3339         input->drag_focus = window,
3340         input->drag_x = x;
3341         input->drag_y = y;
3342
3343         if (!input->touch_grab)
3344                 input->pointer_enter_serial = serial;
3345
3346         if (offer) {
3347                 input->drag_offer = wl_data_offer_get_user_data(offer);
3348
3349                 p = wl_array_add(&input->drag_offer->types, sizeof *p);
3350                 *p = NULL;
3351
3352                 types_data = input->drag_offer->types.data;
3353         } else {
3354                 input->drag_offer = NULL;
3355                 types_data = NULL;
3356         }
3357
3358         if (window->data_handler)
3359                 window->data_handler(window, input, x, y, types_data,
3360                                      window->user_data);
3361 }
3362
3363 static void
3364 data_device_leave(void *data, struct wl_data_device *data_device)
3365 {
3366         struct input *input = data;
3367
3368         if (input->drag_offer) {
3369                 data_offer_destroy(input->drag_offer);
3370                 input->drag_offer = NULL;
3371         }
3372 }
3373
3374 static void
3375 data_device_motion(void *data, struct wl_data_device *data_device,
3376                    uint32_t time, wl_fixed_t x_w, wl_fixed_t y_w)
3377 {
3378         struct input *input = data;
3379         struct window *window = input->drag_focus;
3380         float x = wl_fixed_to_double(x_w);
3381         float y = wl_fixed_to_double(y_w);
3382         void *types_data;
3383
3384         input->drag_x = x;
3385         input->drag_y = y;
3386
3387         if (input->drag_offer)
3388                 types_data = input->drag_offer->types.data;
3389         else
3390                 types_data = NULL;
3391
3392         if (window->data_handler)
3393                 window->data_handler(window, input, x, y, types_data,
3394                                      window->user_data);
3395 }
3396
3397 static void
3398 data_device_drop(void *data, struct wl_data_device *data_device)
3399 {
3400         struct input *input = data;
3401         struct window *window = input->drag_focus;
3402         float x, y;
3403
3404         x = input->drag_x;
3405         y = input->drag_y;
3406
3407         if (window->drop_handler)
3408                 window->drop_handler(window, input,
3409                                      x, y, window->user_data);
3410
3411         if (input->touch_grab)
3412                 touch_ungrab(input);
3413 }
3414
3415 static void
3416 data_device_selection(void *data,
3417                       struct wl_data_device *wl_data_device,
3418                       struct wl_data_offer *offer)
3419 {
3420         struct input *input = data;
3421         char **p;
3422
3423         if (input->selection_offer)
3424                 data_offer_destroy(input->selection_offer);
3425
3426         if (offer) {
3427                 input->selection_offer = wl_data_offer_get_user_data(offer);
3428                 p = wl_array_add(&input->selection_offer->types, sizeof *p);
3429                 *p = NULL;
3430         } else {
3431                 input->selection_offer = NULL;
3432         }
3433 }
3434
3435 static const struct wl_data_device_listener data_device_listener = {
3436         data_device_data_offer,
3437         data_device_enter,
3438         data_device_leave,
3439         data_device_motion,
3440         data_device_drop,
3441         data_device_selection
3442 };
3443
3444 static void
3445 input_set_pointer_image_index(struct input *input, int index)
3446 {
3447         struct wl_buffer *buffer;
3448         struct wl_cursor *cursor;
3449         struct wl_cursor_image *image;
3450
3451         if (!input->pointer)
3452                 return;
3453
3454         cursor = input->display->cursors[input->current_cursor];
3455         if (!cursor)
3456                 return;
3457
3458         if (index >= (int) cursor->image_count) {
3459                 fprintf(stderr, "cursor index out of range\n");
3460                 return;
3461         }
3462
3463         image = cursor->images[index];
3464         buffer = wl_cursor_image_get_buffer(image);
3465         if (!buffer)
3466                 return;
3467
3468         wl_surface_attach(input->pointer_surface, buffer, 0, 0);
3469         wl_surface_damage(input->pointer_surface, 0, 0,
3470                           image->width, image->height);
3471         wl_surface_commit(input->pointer_surface);
3472         wl_pointer_set_cursor(input->pointer, input->pointer_enter_serial,
3473                               input->pointer_surface,
3474                               image->hotspot_x, image->hotspot_y);
3475 }
3476
3477 static const struct wl_callback_listener pointer_surface_listener;
3478
3479 static void
3480 pointer_surface_frame_callback(void *data, struct wl_callback *callback,
3481                                uint32_t time)
3482 {
3483         struct input *input = data;
3484         struct wl_cursor *cursor;
3485         int i;
3486
3487         if (callback) {
3488                 assert(callback == input->cursor_frame_cb);
3489                 wl_callback_destroy(callback);
3490                 input->cursor_frame_cb = NULL;
3491         }
3492
3493         if (!input->pointer)
3494                 return;
3495
3496         if (input->current_cursor == CURSOR_BLANK) {
3497                 wl_pointer_set_cursor(input->pointer,
3498                                       input->pointer_enter_serial,
3499                                       NULL, 0, 0);
3500                 return;
3501         }
3502
3503         if (input->current_cursor == CURSOR_UNSET)
3504                 return;
3505         cursor = input->display->cursors[input->current_cursor];
3506         if (!cursor)
3507                 return;
3508
3509         /* FIXME We don't have the current time on the first call so we set
3510          * the animation start to the time of the first frame callback. */
3511         if (time == 0)
3512                 input->cursor_anim_start = 0;
3513         else if (input->cursor_anim_start == 0)
3514                 input->cursor_anim_start = time;
3515
3516         if (time == 0 || input->cursor_anim_start == 0)
3517                 i = 0;
3518         else
3519                 i = wl_cursor_frame(cursor, time - input->cursor_anim_start);
3520
3521         if (cursor->image_count > 1) {
3522                 input->cursor_frame_cb =
3523                         wl_surface_frame(input->pointer_surface);
3524                 wl_callback_add_listener(input->cursor_frame_cb,
3525                                          &pointer_surface_listener, input);
3526         }
3527
3528         input_set_pointer_image_index(input, i);
3529 }
3530
3531 static const struct wl_callback_listener pointer_surface_listener = {
3532         pointer_surface_frame_callback
3533 };
3534
3535 void
3536 input_set_pointer_image(struct input *input, int pointer)
3537 {
3538         int force = 0;
3539
3540         if (!input->pointer)
3541                 return;
3542
3543         if (input->pointer_enter_serial > input->cursor_serial)
3544                 force = 1;
3545
3546         if (!force && pointer == input->current_cursor)
3547                 return;
3548
3549         input->current_cursor = pointer;
3550         input->cursor_serial = input->pointer_enter_serial;
3551         if (!input->cursor_frame_cb)
3552                 pointer_surface_frame_callback(input, NULL, 0);
3553         else if (force) {
3554                 /* The current frame callback may be stuck if, for instance,
3555                  * the set cursor request was processed by the server after
3556                  * this client lost the focus. In this case the cursor surface
3557                  * might not be mapped and the frame callback wouldn't ever
3558                  * complete. Send a set_cursor and attach to try to map the
3559                  * cursor surface again so that the callback will finish */
3560                 input_set_pointer_image_index(input, 0);
3561         }
3562 }
3563
3564 struct wl_data_device *
3565 input_get_data_device(struct input *input)
3566 {
3567         return input->data_device;
3568 }
3569
3570 void
3571 input_set_selection(struct input *input,
3572                     struct wl_data_source *source, uint32_t time)
3573 {
3574         if (input->data_device)
3575                 wl_data_device_set_selection(input->data_device, source, time);
3576 }
3577
3578 void
3579 input_accept(struct input *input, const char *type)
3580 {
3581         wl_data_offer_accept(input->drag_offer->offer,
3582                              input->drag_enter_serial, type);
3583 }
3584
3585 static void
3586 offer_io_func(struct task *task, uint32_t events)
3587 {
3588         struct data_offer *offer =
3589                 container_of(task, struct data_offer, io_task);
3590         unsigned int len;
3591         char buffer[4096];
3592
3593         len = read(offer->fd, buffer, sizeof buffer);
3594         offer->func(buffer, len,
3595                     offer->x, offer->y, offer->user_data);
3596
3597         if (len == 0) {
3598                 close(offer->fd);
3599                 data_offer_destroy(offer);
3600         }
3601 }
3602
3603 static void
3604 data_offer_receive_data(struct data_offer *offer, const char *mime_type,
3605                         data_func_t func, void *user_data)
3606 {
3607         int p[2];
3608
3609         if (pipe2(p, O_CLOEXEC) == -1)
3610                 return;
3611
3612         wl_data_offer_receive(offer->offer, mime_type, p[1]);
3613         close(p[1]);
3614
3615         offer->io_task.run = offer_io_func;
3616         offer->fd = p[0];
3617         offer->func = func;
3618         offer->refcount++;
3619         offer->user_data = user_data;
3620
3621         display_watch_fd(offer->input->display,
3622                          offer->fd, EPOLLIN, &offer->io_task);
3623 }
3624
3625 void
3626 input_receive_drag_data(struct input *input, const char *mime_type,
3627                         data_func_t func, void *data)
3628 {
3629         data_offer_receive_data(input->drag_offer, mime_type, func, data);
3630         input->drag_offer->x = input->drag_x;
3631         input->drag_offer->y = input->drag_y;
3632 }
3633
3634 int
3635 input_receive_drag_data_to_fd(struct input *input,
3636                               const char *mime_type, int fd)
3637 {
3638         if (input->drag_offer)
3639                 wl_data_offer_receive(input->drag_offer->offer, mime_type, fd);
3640
3641         return 0;
3642 }
3643
3644 int
3645 input_receive_selection_data(struct input *input, const char *mime_type,
3646                              data_func_t func, void *data)
3647 {
3648         char **p;
3649
3650         if (input->selection_offer == NULL)
3651                 return -1;
3652
3653         for (p = input->selection_offer->types.data; *p; p++)
3654                 if (strcmp(mime_type, *p) == 0)
3655                         break;
3656
3657         if (*p == NULL)
3658                 return -1;
3659
3660         data_offer_receive_data(input->selection_offer,
3661                                 mime_type, func, data);
3662         return 0;
3663 }
3664
3665 int
3666 input_receive_selection_data_to_fd(struct input *input,
3667                                    const char *mime_type, int fd)
3668 {
3669         if (input->selection_offer)
3670                 wl_data_offer_receive(input->selection_offer->offer,
3671                                       mime_type, fd);
3672
3673         return 0;
3674 }
3675
3676 void
3677 window_move(struct window *window, struct input *input, uint32_t serial)
3678 {
3679         if (!window->xdg_surface)
3680                 return;
3681
3682         xdg_surface_move(window->xdg_surface, input->seat, serial);
3683 }
3684
3685 static void
3686 surface_set_synchronized(struct surface *surface)
3687 {
3688         if (!surface->subsurface)
3689                 return;
3690
3691         if (surface->synchronized)
3692                 return;
3693
3694         wl_subsurface_set_sync(surface->subsurface);
3695         surface->synchronized = 1;
3696 }
3697
3698 static void
3699 surface_set_synchronized_default(struct surface *surface)
3700 {
3701         if (!surface->subsurface)
3702                 return;
3703
3704         if (surface->synchronized == surface->synchronized_default)
3705                 return;
3706
3707         if (surface->synchronized_default)
3708                 wl_subsurface_set_sync(surface->subsurface);
3709         else
3710                 wl_subsurface_set_desync(surface->subsurface);
3711
3712         surface->synchronized = surface->synchronized_default;
3713 }
3714
3715 static void
3716 surface_resize(struct surface *surface)
3717 {
3718         struct widget *widget = surface->widget;
3719         struct wl_compositor *compositor = widget->window->display->compositor;
3720
3721         if (surface->input_region) {
3722                 wl_region_destroy(surface->input_region);
3723                 surface->input_region = NULL;
3724         }
3725
3726         if (surface->opaque_region)
3727                 wl_region_destroy(surface->opaque_region);
3728
3729         surface->opaque_region = wl_compositor_create_region(compositor);
3730
3731         if (widget->resize_handler)
3732                 widget->resize_handler(widget,
3733                                        widget->allocation.width,
3734                                        widget->allocation.height,
3735                                        widget->user_data);
3736
3737         if (surface->subsurface &&
3738             (surface->allocation.x != widget->allocation.x ||
3739              surface->allocation.y != widget->allocation.y)) {
3740                 wl_subsurface_set_position(surface->subsurface,
3741                                            widget->allocation.x,
3742                                            widget->allocation.y);
3743         }
3744         if (surface->allocation.width != widget->allocation.width ||
3745             surface->allocation.height != widget->allocation.height) {
3746                 window_schedule_redraw(widget->window);
3747         }
3748         surface->allocation = widget->allocation;
3749
3750         if (widget->opaque)
3751                 wl_region_add(surface->opaque_region, 0, 0,
3752                               widget->allocation.width,
3753                               widget->allocation.height);
3754 }
3755
3756 static void
3757 hack_prevent_EGL_sub_surface_deadlock(struct window *window)
3758 {
3759         /*
3760          * This hack should be removed, when EGL respects
3761          * eglSwapInterval(0).
3762          *
3763          * If this window has sub-surfaces, especially a free-running
3764          * EGL-widget, we need to post the parent surface once with
3765          * all the old state to guarantee, that the EGL-widget will
3766          * receive its frame callback soon. Otherwise, a forced call
3767          * to eglSwapBuffers may end up blocking, waiting for a frame
3768          * event that will never come, because we will commit the parent
3769          * surface with all new state only after eglSwapBuffers returns.
3770          *
3771          * This assumes, that:
3772          * 1. When the EGL widget's resize hook is called, it pauses.
3773          * 2. When the EGL widget's redraw hook is called, it forces a
3774          *    repaint and a call to eglSwapBuffers(), and maybe resumes.
3775          * In a single threaded application condition 1 is a no-op.
3776          *
3777          * XXX: This should actually be after the surface_resize() calls,
3778          * but cannot, because then it would commit the incomplete state
3779          * accumulated from the widget resize hooks.
3780          */
3781         if (window->subsurface_list.next != &window->main_surface->link ||
3782             window->subsurface_list.prev != &window->main_surface->link)
3783                 wl_surface_commit(window->main_surface->surface);
3784 }
3785
3786 static void
3787 window_do_resize(struct window *window)
3788 {
3789         struct surface *surface;
3790
3791         widget_set_allocation(window->main_surface->widget,
3792                               window->pending_allocation.x,
3793                               window->pending_allocation.y,
3794                               window->pending_allocation.width,
3795                               window->pending_allocation.height);
3796
3797         surface_resize(window->main_surface);
3798
3799         /* The main surface is in the list, too. Main surface's
3800          * resize_handler is responsible for calling widget_set_allocation()
3801          * on all sub-surface root widgets, so they will be resized
3802          * properly.
3803          */
3804         wl_list_for_each(surface, &window->subsurface_list, link) {
3805                 if (surface == window->main_surface)
3806                         continue;
3807
3808                 surface_set_synchronized(surface);
3809                 surface_resize(surface);
3810         }
3811
3812         if (!window->fullscreen && !window->maximized)
3813                 window->saved_allocation = window->pending_allocation;
3814 }
3815
3816 static void
3817 idle_resize(struct window *window)
3818 {
3819         window->resize_needed = 0;
3820         window->redraw_needed = 1;
3821
3822         DBG("from %dx%d to %dx%d\n",
3823             window->main_surface->server_allocation.width,
3824             window->main_surface->server_allocation.height,
3825             window->pending_allocation.width,
3826             window->pending_allocation.height);
3827
3828         hack_prevent_EGL_sub_surface_deadlock(window);
3829
3830         window_do_resize(window);
3831 }
3832
3833 static void
3834 undo_resize(struct window *window)
3835 {
3836         window->pending_allocation.width =
3837                 window->main_surface->server_allocation.width;
3838         window->pending_allocation.height =
3839                 window->main_surface->server_allocation.height;
3840
3841         DBG("back to %dx%d\n",
3842             window->main_surface->server_allocation.width,
3843             window->main_surface->server_allocation.height);
3844
3845         window_do_resize(window);
3846
3847         if (window->pending_allocation.width == 0 &&
3848             window->pending_allocation.height == 0) {
3849                 fprintf(stderr, "Error: Could not draw a surface, "
3850                         "most likely due to insufficient disk space in "
3851                         "%s (XDG_RUNTIME_DIR).\n", getenv("XDG_RUNTIME_DIR"));
3852                 exit(EXIT_FAILURE);
3853         }
3854 }
3855
3856 void
3857 window_schedule_resize(struct window *window, int width, int height)
3858 {
3859         /* We should probably get these numbers from the theme. */
3860         const int min_width = 200, min_height = 200;
3861
3862         window->pending_allocation.x = 0;
3863         window->pending_allocation.y = 0;
3864         window->pending_allocation.width = width;
3865         window->pending_allocation.height = height;
3866
3867         if (window->min_allocation.width == 0) {
3868                 if (width < min_width && window->frame)
3869                         window->min_allocation.width = min_width;
3870                 else
3871                         window->min_allocation.width = width;
3872                 if (height < min_height && window->frame)
3873                         window->min_allocation.height = min_height;
3874                 else
3875                         window->min_allocation.height = height;
3876         }
3877
3878         if (window->pending_allocation.width < window->min_allocation.width)
3879                 window->pending_allocation.width = window->min_allocation.width;
3880         if (window->pending_allocation.height < window->min_allocation.height)
3881                 window->pending_allocation.height = window->min_allocation.height;
3882
3883         window->resize_needed = 1;
3884         window_schedule_redraw(window);
3885 }
3886
3887 void
3888 widget_schedule_resize(struct widget *widget, int32_t width, int32_t height)
3889 {
3890         window_schedule_resize(widget->window, width, height);
3891 }
3892
3893 static int
3894 window_get_shadow_margin(struct window *window)
3895 {
3896         if (window->frame && !window->fullscreen)
3897                 return frame_get_shadow_margin(window->frame->frame);
3898         else
3899                 return 0;
3900 }
3901
3902 static void
3903 handle_surface_configure(void *data, struct xdg_surface *xdg_surface,
3904                          int32_t width, int32_t height,
3905                          struct wl_array *states, uint32_t serial)
3906 {
3907         struct window *window = data;
3908         uint32_t *p;
3909
3910         window->maximized = 0;
3911         window->fullscreen = 0;
3912         window->resizing = 0;
3913         window->focused = 0;
3914
3915         wl_array_for_each(p, states) {
3916                 uint32_t state = *p;
3917                 switch (state) {
3918                 case XDG_SURFACE_STATE_MAXIMIZED:
3919                         window->maximized = 1;
3920                         break;
3921                 case XDG_SURFACE_STATE_FULLSCREEN:
3922                         window->fullscreen = 1;
3923                         break;
3924                 case XDG_SURFACE_STATE_RESIZING:
3925                         window->resizing = 1;
3926                         break;
3927                 case XDG_SURFACE_STATE_ACTIVATED:
3928                         window->focused = 1;
3929                         break;
3930                 default:
3931                         /* Unknown state */
3932                         break;
3933                 }
3934         }
3935
3936         if (window->frame) {
3937                 if (window->maximized) {
3938                         frame_set_flag(window->frame->frame, FRAME_FLAG_MAXIMIZED);
3939                 } else {
3940                         frame_unset_flag(window->frame->frame, FRAME_FLAG_MAXIMIZED);
3941                 }
3942
3943                 if (window->focused) {
3944                         frame_set_flag(window->frame->frame, FRAME_FLAG_ACTIVE);
3945                 } else {
3946                         frame_unset_flag(window->frame->frame, FRAME_FLAG_ACTIVE);
3947                 }
3948         }
3949
3950         if (width > 0 && height > 0) {
3951                 /* The width / height params are for window geometry,
3952                  * but window_schedule_resize takes allocation. Add
3953                  * on the shadow margin to get the difference. */
3954                 int margin = window_get_shadow_margin(window);
3955
3956                 window_schedule_resize(window,
3957                                        width + margin * 2,
3958                                        height + margin * 2);
3959         } else {
3960                 window_schedule_resize(window,
3961                                        window->saved_allocation.width,
3962                                        window->saved_allocation.height);
3963         }
3964
3965         xdg_surface_ack_configure(window->xdg_surface, serial);
3966
3967         if (window->state_changed_handler)
3968                 window->state_changed_handler(window, window->user_data);
3969 }
3970
3971 static void
3972 handle_surface_delete(void *data, struct xdg_surface *xdg_surface)
3973 {
3974         struct window *window = data;
3975         window_close(window);
3976 }
3977
3978 static const struct xdg_surface_listener xdg_surface_listener = {
3979         handle_surface_configure,
3980         handle_surface_delete,
3981 };
3982
3983 static void
3984 window_sync_parent(struct window *window)
3985 {
3986         struct wl_surface *parent_surface;
3987
3988         if (!window->xdg_surface)
3989                 return;
3990
3991         if (window->parent)
3992                 parent_surface = window->parent->main_surface->surface;
3993         else
3994                 parent_surface = NULL;
3995
3996         xdg_surface_set_parent(window->xdg_surface, parent_surface);
3997 }
3998
3999 static void
4000 window_get_geometry(struct window *window, struct rectangle *geometry)
4001 {
4002         if (window->frame && !window->fullscreen)
4003                 frame_input_rect(window->frame->frame,
4004                                  &geometry->x,
4005                                  &geometry->y,
4006                                  &geometry->width,
4007                                  &geometry->height);
4008         else
4009                 window_get_allocation(window, geometry);
4010 }
4011
4012 static void
4013 window_sync_geometry(struct window *window)
4014 {
4015         struct rectangle geometry;
4016
4017         if (!window->xdg_surface)
4018                 return;
4019
4020         window_get_geometry(window, &geometry);
4021
4022         xdg_surface_set_window_geometry(window->xdg_surface,
4023                                         geometry.x,
4024                                         geometry.y,
4025                                         geometry.width,
4026                                         geometry.height);
4027 }
4028
4029 static void
4030 window_flush(struct window *window)
4031 {
4032         struct surface *surface;
4033
4034         if (!window->custom) {
4035                 if (window->xdg_surface) {
4036                         window_sync_parent(window);
4037                         window_sync_geometry(window);
4038                 }
4039         }
4040
4041         wl_list_for_each(surface, &window->subsurface_list, link) {
4042                 if (surface == window->main_surface)
4043                         continue;
4044
4045                 surface_flush(surface);
4046         }
4047
4048         surface_flush(window->main_surface);
4049 }
4050
4051 static void
4052 menu_destroy(struct menu *menu)
4053 {
4054         widget_destroy(menu->widget);
4055         window_destroy(menu->window);
4056         frame_destroy(menu->frame);
4057         free(menu);
4058 }
4059
4060 void
4061 window_get_allocation(struct window *window,
4062                       struct rectangle *allocation)
4063 {
4064         *allocation = window->main_surface->allocation;
4065 }
4066
4067 static void
4068 widget_redraw(struct widget *widget)
4069 {
4070         struct widget *child;
4071
4072         if (widget->redraw_handler)
4073                 widget->redraw_handler(widget, widget->user_data);
4074         wl_list_for_each(child, &widget->child_list, link)
4075                 widget_redraw(child);
4076 }
4077
4078 static void
4079 frame_callback(void *data, struct wl_callback *callback, uint32_t time)
4080 {
4081         struct surface *surface = data;
4082
4083         assert(callback == surface->frame_cb);
4084         DBG_OBJ(callback, "done\n");
4085         wl_callback_destroy(callback);
4086         surface->frame_cb = NULL;
4087
4088         surface->last_time = time;
4089
4090         if (surface->redraw_needed || surface->window->redraw_needed) {
4091                 DBG_OBJ(surface->surface, "window_schedule_redraw_task\n");
4092                 window_schedule_redraw_task(surface->window);
4093         }
4094 }
4095
4096 static const struct wl_callback_listener listener = {
4097         frame_callback
4098 };
4099
4100 static int
4101 surface_redraw(struct surface *surface)
4102 {
4103         DBG_OBJ(surface->surface, "begin\n");
4104
4105         if (!surface->window->redraw_needed && !surface->redraw_needed)
4106                 return 0;
4107
4108         /* Whole-window redraw forces a redraw even if the previous has
4109          * not yet hit the screen.
4110          */
4111         if (surface->frame_cb) {
4112                 if (!surface->window->redraw_needed)
4113                         return 0;
4114
4115                 DBG_OBJ(surface->frame_cb, "cancelled\n");
4116                 wl_callback_destroy(surface->frame_cb);
4117         }
4118
4119         if (surface->widget->use_cairo &&
4120             !widget_get_cairo_surface(surface->widget)) {
4121                 DBG_OBJ(surface->surface, "cancelled due buffer failure\n");
4122                 return -1;
4123         }
4124
4125         surface->frame_cb = wl_surface_frame(surface->surface);
4126         wl_callback_add_listener(surface->frame_cb, &listener, surface);
4127         DBG_OBJ(surface->frame_cb, "new\n");
4128
4129         surface->redraw_needed = 0;
4130         DBG_OBJ(surface->surface, "-> widget_redraw\n");
4131         widget_redraw(surface->widget);
4132         DBG_OBJ(surface->surface, "done\n");
4133         return 0;
4134 }
4135
4136 static void
4137 idle_redraw(struct task *task, uint32_t events)
4138 {
4139         struct window *window = container_of(task, struct window, redraw_task);
4140         struct surface *surface;
4141         int failed = 0;
4142         int resized = 0;
4143
4144         DBG(" --------- \n");
4145
4146         wl_list_init(&window->redraw_task.link);
4147         window->redraw_task_scheduled = 0;
4148
4149         if (window->resize_needed) {
4150                 /* throttle resizing to the main surface display */
4151                 if (window->main_surface->frame_cb) {
4152                         DBG_OBJ(window->main_surface->frame_cb, "pending\n");
4153                         return;
4154                 }
4155
4156                 idle_resize(window);
4157                 resized = 1;
4158         }
4159
4160         if (surface_redraw(window->main_surface) < 0) {
4161                 /*
4162                  * Only main_surface failure will cause us to undo the resize.
4163                  * If sub-surfaces fail, they will just be broken with old
4164                  * content.
4165                  */
4166                 failed = 1;
4167         } else {
4168                 wl_list_for_each(surface, &window->subsurface_list, link) {
4169                         if (surface == window->main_surface)
4170                                 continue;
4171
4172                         surface_redraw(surface);
4173                 }
4174         }
4175
4176         window->redraw_needed = 0;
4177         window_flush(window);
4178
4179         wl_list_for_each(surface, &window->subsurface_list, link)
4180                 surface_set_synchronized_default(surface);
4181
4182         if (resized && failed) {
4183                 /* Restore widget tree to correspond to what is on screen. */
4184                 undo_resize(window);
4185         }
4186 }
4187
4188 static void
4189 window_schedule_redraw_task(struct window *window)
4190 {
4191         if (!window->redraw_task_scheduled) {
4192                 window->redraw_task.run = idle_redraw;
4193                 display_defer(window->display, &window->redraw_task);
4194                 window->redraw_task_scheduled = 1;
4195         }
4196 }
4197
4198 void
4199 window_schedule_redraw(struct window *window)
4200 {
4201         struct surface *surface;
4202
4203         DBG_OBJ(window->main_surface->surface, "window %p\n", window);
4204
4205         wl_list_for_each(surface, &window->subsurface_list, link)
4206                 surface->redraw_needed = 1;
4207
4208         window_schedule_redraw_task(window);
4209 }
4210
4211 int
4212 window_is_fullscreen(struct window *window)
4213 {
4214         return window->fullscreen;
4215 }
4216
4217 void
4218 window_set_fullscreen(struct window *window, int fullscreen)
4219 {
4220         if (!window->xdg_surface)
4221                 return;
4222
4223         if (window->fullscreen == fullscreen)
4224                 return;
4225
4226         if (fullscreen)
4227                 xdg_surface_set_fullscreen(window->xdg_surface, NULL);
4228         else
4229                 xdg_surface_unset_fullscreen(window->xdg_surface);
4230 }
4231
4232 int
4233 window_is_maximized(struct window *window)
4234 {
4235         return window->maximized;
4236 }
4237
4238 void
4239 window_set_maximized(struct window *window, int maximized)
4240 {
4241         if (!window->xdg_surface)
4242                 return;
4243
4244         if (window->maximized == maximized)
4245                 return;
4246
4247         if (maximized)
4248                 xdg_surface_set_maximized(window->xdg_surface);
4249         else
4250                 xdg_surface_unset_maximized(window->xdg_surface);
4251 }
4252
4253 int
4254 window_is_resizing(struct window *window)
4255 {
4256         return window->resizing;
4257 }
4258
4259 void
4260 window_set_minimized(struct window *window)
4261 {
4262         if (!window->xdg_surface)
4263                 return;
4264
4265         xdg_surface_set_minimized(window->xdg_surface);
4266 }
4267
4268 void
4269 window_set_user_data(struct window *window, void *data)
4270 {
4271         window->user_data = data;
4272 }
4273
4274 void *
4275 window_get_user_data(struct window *window)
4276 {
4277         return window->user_data;
4278 }
4279
4280 void
4281 window_set_key_handler(struct window *window,
4282                        window_key_handler_t handler)
4283 {
4284         window->key_handler = handler;
4285 }
4286
4287 void
4288 window_set_keyboard_focus_handler(struct window *window,
4289                                   window_keyboard_focus_handler_t handler)
4290 {
4291         window->keyboard_focus_handler = handler;
4292 }
4293
4294 void
4295 window_set_data_handler(struct window *window, window_data_handler_t handler)
4296 {
4297         window->data_handler = handler;
4298 }
4299
4300 void
4301 window_set_drop_handler(struct window *window, window_drop_handler_t handler)
4302 {
4303         window->drop_handler = handler;
4304 }
4305
4306 void
4307 window_set_close_handler(struct window *window,
4308                          window_close_handler_t handler)
4309 {
4310         window->close_handler = handler;
4311 }
4312
4313 void
4314 window_set_fullscreen_handler(struct window *window,
4315                               window_fullscreen_handler_t handler)
4316 {
4317         window->fullscreen_handler = handler;
4318 }
4319
4320 void
4321 window_set_output_handler(struct window *window,
4322                           window_output_handler_t handler)
4323 {
4324         window->output_handler = handler;
4325 }
4326
4327 void
4328 window_set_state_changed_handler(struct window *window,
4329                                  window_state_changed_handler_t handler)
4330 {
4331         window->state_changed_handler = handler;
4332 }
4333
4334 void
4335 window_set_title(struct window *window, const char *title)
4336 {
4337         free(window->title);
4338         window->title = strdup(title);
4339         if (window->frame) {
4340                 frame_set_title(window->frame->frame, title);
4341                 widget_schedule_redraw(window->frame->widget);
4342         }
4343         if (window->xdg_surface)
4344                 xdg_surface_set_title(window->xdg_surface, title);
4345 }
4346
4347 const char *
4348 window_get_title(struct window *window)
4349 {
4350         return window->title;
4351 }
4352
4353 void
4354 window_set_text_cursor_position(struct window *window, int32_t x, int32_t y)
4355 {
4356         struct text_cursor_position *text_cursor_position =
4357                                         window->display->text_cursor_position;
4358
4359         if (!text_cursor_position)
4360                 return;
4361
4362         text_cursor_position_notify(text_cursor_position,
4363                                     window->main_surface->surface,
4364                                     wl_fixed_from_int(x),
4365                                     wl_fixed_from_int(y));
4366 }
4367
4368 void
4369 window_damage(struct window *window, int32_t x, int32_t y,
4370               int32_t width, int32_t height)
4371 {
4372         wl_surface_damage(window->main_surface->surface, x, y, width, height);
4373 }
4374
4375 static void
4376 surface_enter(void *data,
4377               struct wl_surface *wl_surface, struct wl_output *wl_output)
4378 {
4379         struct window *window = data;
4380         struct output *output;
4381         struct output *output_found = NULL;
4382         struct window_output *window_output;
4383
4384         wl_list_for_each(output, &window->display->output_list, link) {
4385                 if (output->output == wl_output) {
4386                         output_found = output;
4387                         break;
4388                 }
4389         }
4390
4391         if (!output_found)
4392                 return;
4393
4394         window_output = xmalloc(sizeof *window_output);
4395         window_output->output = output_found;
4396
4397         wl_list_insert (&window->window_output_list, &window_output->link);
4398
4399         if (window->output_handler)
4400                 window->output_handler(window, output_found, 1,
4401                                        window->user_data);
4402 }
4403
4404 static void
4405 surface_leave(void *data,
4406               struct wl_surface *wl_surface, struct wl_output *output)
4407 {
4408         struct window *window = data;
4409         struct window_output *window_output;
4410         struct window_output *window_output_found = NULL;
4411
4412         wl_list_for_each(window_output, &window->window_output_list, link) {
4413                 if (window_output->output->output == output) {
4414                         window_output_found = window_output;
4415                         break;
4416                 }
4417         }
4418
4419         if (window_output_found) {
4420                 wl_list_remove(&window_output_found->link);
4421
4422                 if (window->output_handler)
4423                         window->output_handler(window, window_output->output,
4424                                                0, window->user_data);
4425
4426                 free(window_output_found);
4427         }
4428 }
4429
4430 static const struct wl_surface_listener surface_listener = {
4431         surface_enter,
4432         surface_leave
4433 };
4434
4435 static struct surface *
4436 surface_create(struct window *window)
4437 {
4438         struct display *display = window->display;
4439         struct surface *surface;
4440
4441         surface = xmalloc(sizeof *surface);
4442         memset(surface, 0, sizeof *surface);
4443         if (!surface)
4444                 return NULL;
4445
4446         surface->window = window;
4447         surface->surface = wl_compositor_create_surface(display->compositor);
4448         surface->buffer_scale = 1;
4449         wl_surface_add_listener(surface->surface, &surface_listener, window);
4450
4451         wl_list_insert(&window->subsurface_list, &surface->link);
4452
4453         return surface;
4454 }
4455
4456 static enum window_buffer_type
4457 get_preferred_buffer_type(struct display *display)
4458 {
4459 #ifdef HAVE_CAIRO_EGL
4460         if (display->argb_device && !getenv("TOYTOOLKIT_NO_EGL"))
4461                 return WINDOW_BUFFER_TYPE_EGL_WINDOW;
4462 #endif
4463
4464         return WINDOW_BUFFER_TYPE_SHM;
4465 }
4466
4467 static struct window *
4468 window_create_internal(struct display *display, int custom)
4469 {
4470         struct window *window;
4471         struct surface *surface;
4472
4473         window = xzalloc(sizeof *window);
4474         wl_list_init(&window->subsurface_list);
4475         window->display = display;
4476
4477         surface = surface_create(window);
4478         window->main_surface = surface;
4479
4480         assert(custom || display->xdg_shell);
4481
4482         window->custom = custom;
4483         window->preferred_format = WINDOW_PREFERRED_FORMAT_NONE;
4484
4485         surface->buffer_type = get_preferred_buffer_type(display);
4486
4487         wl_surface_set_user_data(surface->surface, window);
4488         wl_list_insert(display->window_list.prev, &window->link);
4489         wl_list_init(&window->redraw_task.link);
4490
4491         wl_list_init (&window->window_output_list);
4492
4493         return window;
4494 }
4495
4496 struct window *
4497 window_create(struct display *display)
4498 {
4499         struct window *window;
4500
4501         window = window_create_internal(display, 0);
4502
4503         window->xdg_surface =
4504                 xdg_shell_get_xdg_surface(window->display->xdg_shell,
4505                                           window->main_surface->surface);
4506         fail_on_null(window->xdg_surface);
4507
4508         xdg_surface_set_user_data(window->xdg_surface, window);
4509         xdg_surface_add_listener(window->xdg_surface,
4510                                  &xdg_surface_listener, window);
4511
4512         return window;
4513 }
4514
4515 struct window *
4516 window_create_custom(struct display *display)
4517 {
4518         return window_create_internal(display, 1);
4519 }
4520
4521 void
4522 window_set_parent(struct window *window,
4523                   struct window *parent_window)
4524 {
4525         window->parent = parent_window;
4526         window_sync_parent(window);
4527 }
4528
4529 struct window *
4530 window_get_parent(struct window *window)
4531 {
4532         return window->parent;
4533 }
4534
4535 static void
4536 menu_set_item(struct menu *menu, int sy)
4537 {
4538         int32_t x, y, width, height;
4539         int next;
4540
4541         frame_interior(menu->frame, &x, &y, &width, &height);
4542         next = (sy - y) / 20;
4543         if (menu->current != next) {
4544                 menu->current = next;
4545                 widget_schedule_redraw(menu->widget);
4546         }
4547 }
4548
4549 static int
4550 menu_motion_handler(struct widget *widget,
4551                     struct input *input, uint32_t time,
4552                     float x, float y, void *data)
4553 {
4554         struct menu *menu = data;
4555
4556         if (widget == menu->widget)
4557                 menu_set_item(data, y);
4558
4559         return CURSOR_LEFT_PTR;
4560 }
4561
4562 static int
4563 menu_enter_handler(struct widget *widget,
4564                    struct input *input, float x, float y, void *data)
4565 {
4566         struct menu *menu = data;
4567
4568         if (widget == menu->widget)
4569                 menu_set_item(data, y);
4570
4571         return CURSOR_LEFT_PTR;
4572 }
4573
4574 static void
4575 menu_leave_handler(struct widget *widget, struct input *input, void *data)
4576 {
4577         struct menu *menu = data;
4578
4579         if (widget == menu->widget)
4580                 menu_set_item(data, -200);
4581 }
4582
4583 static void
4584 menu_button_handler(struct widget *widget,
4585                     struct input *input, uint32_t time,
4586                     uint32_t button, enum wl_pointer_button_state state,
4587                     void *data)
4588
4589 {
4590         struct menu *menu = data;
4591
4592         if (state == WL_POINTER_BUTTON_STATE_RELEASED &&
4593             (menu->release_count > 0 || time - menu->time > 500)) {
4594                 /* Either relase after press-drag-release or
4595                  * click-motion-click. */
4596                 menu->func(menu->user_data, input, menu->current);
4597                 input_ungrab(input);
4598                 menu_destroy(menu);
4599         } else if (state == WL_POINTER_BUTTON_STATE_RELEASED) {
4600                 menu->release_count++;
4601         }
4602 }
4603
4604 static void
4605 menu_touch_up_handler(struct widget *widget,
4606                                           struct input *input,
4607                                           uint32_t serial,
4608                                           uint32_t time,
4609                                           int32_t id,
4610                                           void *data)
4611 {
4612         struct menu *menu = data;
4613
4614         input_ungrab(input);
4615         menu_destroy(menu);
4616 }
4617
4618 static void
4619 menu_redraw_handler(struct widget *widget, void *data)
4620 {
4621         cairo_t *cr;
4622         struct menu *menu = data;
4623         int32_t x, y, width, height, i;
4624
4625         cr = widget_cairo_create(widget);
4626
4627         frame_repaint(menu->frame, cr);
4628         frame_interior(menu->frame, &x, &y, &width, &height);
4629
4630         theme_set_background_source(menu->window->display->theme,
4631                                     cr, THEME_FRAME_ACTIVE);
4632         cairo_rectangle(cr, x, y, width, height);
4633         cairo_fill(cr);
4634
4635         cairo_select_font_face(cr, "sans",
4636                                CAIRO_FONT_SLANT_NORMAL,
4637                                CAIRO_FONT_WEIGHT_NORMAL);
4638         cairo_set_font_size(cr, 12);
4639
4640         for (i = 0; i < menu->count; i++) {
4641                 if (i == menu->current) {
4642                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
4643                         cairo_rectangle(cr, x, y + i * 20, width, 20);
4644                         cairo_fill(cr);
4645                         cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
4646                         cairo_move_to(cr, x + 10, y + i * 20 + 16);
4647                         cairo_show_text(cr, menu->entries[i]);
4648                 } else {
4649                         cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
4650                         cairo_move_to(cr, x + 10, y + i * 20 + 16);
4651                         cairo_show_text(cr, menu->entries[i]);
4652                 }
4653         }
4654
4655         cairo_destroy(cr);
4656 }
4657
4658 static void
4659 handle_popup_popup_done(void *data, struct xdg_popup *xdg_popup, uint32_t serial)
4660 {
4661         struct window *window = data;
4662         struct menu *menu = window->main_surface->widget->user_data;
4663
4664         input_ungrab(menu->input);
4665         menu_destroy(menu);
4666 }
4667
4668 static const struct xdg_popup_listener xdg_popup_listener = {
4669         handle_popup_popup_done,
4670 };
4671
4672 static struct menu *
4673 create_menu(struct display *display,
4674             struct input *input, uint32_t time,
4675             menu_func_t func, const char **entries, int count,
4676             void *user_data)
4677 {
4678         struct window *window;
4679         struct menu *menu;
4680
4681         menu = malloc(sizeof *menu);
4682         if (!menu)
4683                 return NULL;
4684
4685         window = window_create_internal(display, 0);
4686         if (!window) {
4687                 free(menu);
4688                 return NULL;
4689         }
4690
4691         menu->window = window;
4692         menu->user_data = user_data;
4693         menu->widget = window_add_widget(menu->window, menu);
4694         menu->frame = frame_create(window->display->theme, 0, 0,
4695                                    FRAME_BUTTON_NONE, NULL);
4696         fail_on_null(menu->frame);
4697         menu->entries = entries;
4698         menu->count = count;
4699         menu->release_count = 0;
4700         menu->current = -1;
4701         menu->time = time;
4702         menu->func = func;
4703         menu->input = input;
4704
4705         input_ungrab(input);
4706
4707         widget_set_redraw_handler(menu->widget, menu_redraw_handler);
4708         widget_set_enter_handler(menu->widget, menu_enter_handler);
4709         widget_set_leave_handler(menu->widget, menu_leave_handler);
4710         widget_set_motion_handler(menu->widget, menu_motion_handler);
4711         widget_set_button_handler(menu->widget, menu_button_handler);
4712         widget_set_touch_up_handler(menu->widget, menu_touch_up_handler);
4713
4714         input_grab(input, menu->widget, 0);
4715         frame_resize_inside(menu->frame, 200, count * 20);
4716         frame_set_flag(menu->frame, FRAME_FLAG_ACTIVE);
4717         window_schedule_resize(window, frame_width(menu->frame),
4718                                frame_height(menu->frame));
4719
4720         return menu;
4721 }
4722
4723 struct window *
4724 window_create_menu(struct display *display,
4725                    struct input *input, uint32_t time,
4726                    menu_func_t func, const char **entries, int count,
4727                    void *user_data)
4728 {
4729         struct menu *menu;
4730         menu = create_menu(display, input, time, func, entries, count, user_data);
4731
4732         if (menu == NULL)
4733                 return NULL;
4734
4735         return menu->window;
4736 }
4737
4738 void
4739 window_show_menu(struct display *display,
4740                  struct input *input, uint32_t time, struct window *parent,
4741                  int32_t x, int32_t y,
4742                  menu_func_t func, const char **entries, int count)
4743 {
4744         struct menu *menu;
4745         struct window *window;
4746         int32_t ix, iy;
4747
4748         menu = create_menu(display, input, time, func, entries, count, parent);
4749
4750         if (menu == NULL)
4751                 return;
4752
4753         window = menu->window;
4754
4755         window_set_buffer_scale (menu->window, window_get_buffer_scale (parent));
4756         window_set_buffer_transform (menu->window, window_get_buffer_transform (parent));
4757
4758         window->x = x;
4759         window->y = y;
4760
4761         frame_interior(menu->frame, &ix, &iy, NULL, NULL);
4762
4763         window->xdg_popup = xdg_shell_get_xdg_popup(display->xdg_shell,
4764                                                     window->main_surface->surface,
4765                                                     parent->main_surface->surface,
4766                                                     input->seat,
4767                                                     display_get_serial(window->display),
4768                                                     window->x - ix,
4769                                                     window->y - iy,
4770                                                     0);
4771         fail_on_null(window->xdg_popup);
4772
4773         xdg_popup_set_user_data(window->xdg_popup, window);
4774         xdg_popup_add_listener(window->xdg_popup,
4775                                &xdg_popup_listener, window);
4776 }
4777
4778 void
4779 window_set_buffer_type(struct window *window, enum window_buffer_type type)
4780 {
4781         window->main_surface->buffer_type = type;
4782 }
4783
4784 enum window_buffer_type
4785 window_get_buffer_type(struct window *window)
4786 {
4787         return window->main_surface->buffer_type;
4788 }
4789
4790 void
4791 window_set_preferred_format(struct window *window,
4792                             enum preferred_format format)
4793 {
4794         window->preferred_format = format;
4795 }
4796
4797 struct widget *
4798 window_add_subsurface(struct window *window, void *data,
4799                       enum subsurface_mode default_mode)
4800 {
4801         struct widget *widget;
4802         struct surface *surface;
4803         struct wl_surface *parent;
4804         struct wl_subcompositor *subcompo = window->display->subcompositor;
4805
4806         surface = surface_create(window);
4807         surface->buffer_type = window_get_buffer_type(window);
4808         widget = widget_create(window, surface, data);
4809         wl_list_init(&widget->link);
4810         surface->widget = widget;
4811
4812         parent = window->main_surface->surface;
4813         surface->subsurface = wl_subcompositor_get_subsurface(subcompo,
4814                                                               surface->surface,
4815                                                               parent);
4816         surface->synchronized = 1;
4817
4818         switch (default_mode) {
4819         case SUBSURFACE_SYNCHRONIZED:
4820                 surface->synchronized_default = 1;
4821                 break;
4822         case SUBSURFACE_DESYNCHRONIZED:
4823                 surface->synchronized_default = 0;
4824                 break;
4825         default:
4826                 assert(!"bad enum subsurface_mode");
4827         }
4828
4829         window->resize_needed = 1;
4830         window_schedule_redraw(window);
4831
4832         return widget;
4833 }
4834
4835 static void
4836 display_handle_geometry(void *data,
4837                         struct wl_output *wl_output,
4838                         int x, int y,
4839                         int physical_width,
4840                         int physical_height,
4841                         int subpixel,
4842                         const char *make,
4843                         const char *model,
4844                         int transform)
4845 {
4846         struct output *output = data;
4847
4848         output->allocation.x = x;
4849         output->allocation.y = y;
4850         output->transform = transform;
4851
4852         if (output->make)
4853                 free(output->make);
4854         output->make = strdup(make);
4855
4856         if (output->model)
4857                 free(output->model);
4858         output->model = strdup(model);
4859 }
4860
4861 static void
4862 display_handle_done(void *data,
4863                      struct wl_output *wl_output)
4864 {
4865 }
4866
4867 static void
4868 display_handle_scale(void *data,
4869                      struct wl_output *wl_output,
4870                      int32_t scale)
4871 {
4872         struct output *output = data;
4873
4874         output->scale = scale;
4875 }
4876
4877 static void
4878 display_handle_mode(void *data,
4879                     struct wl_output *wl_output,
4880                     uint32_t flags,
4881                     int width,
4882                     int height,
4883                     int refresh)
4884 {
4885         struct output *output = data;
4886         struct display *display = output->display;
4887
4888         if (flags & WL_OUTPUT_MODE_CURRENT) {
4889                 output->allocation.width = width;
4890                 output->allocation.height = height;
4891                 if (display->output_configure_handler)
4892                         (*display->output_configure_handler)(
4893                                                 output, display->user_data);
4894         }
4895 }
4896
4897 static const struct wl_output_listener output_listener = {
4898         display_handle_geometry,
4899         display_handle_mode,
4900         display_handle_done,
4901         display_handle_scale
4902 };
4903
4904 static void
4905 display_add_output(struct display *d, uint32_t id)
4906 {
4907         struct output *output;
4908
4909         output = xzalloc(sizeof *output);
4910         output->display = d;
4911         output->scale = 1;
4912         output->output =
4913                 wl_registry_bind(d->registry, id, &wl_output_interface, 2);
4914         output->server_output_id = id;
4915         wl_list_insert(d->output_list.prev, &output->link);
4916
4917         wl_output_add_listener(output->output, &output_listener, output);
4918 }
4919
4920 static void
4921 output_destroy(struct output *output)
4922 {
4923         if (output->destroy_handler)
4924                 (*output->destroy_handler)(output, output->user_data);
4925
4926         wl_output_destroy(output->output);
4927         wl_list_remove(&output->link);
4928         free(output);
4929 }
4930
4931 static void
4932 display_destroy_output(struct display *d, uint32_t id)
4933 {
4934         struct output *output;
4935
4936         wl_list_for_each(output, &d->output_list, link) {
4937                 if (output->server_output_id == id) {
4938                         output_destroy(output);
4939                         break;
4940                 }
4941         }
4942 }
4943
4944 void
4945 display_set_global_handler(struct display *display,
4946                            display_global_handler_t handler)
4947 {
4948         struct global *global;
4949
4950         display->global_handler = handler;
4951         if (!handler)
4952                 return;
4953
4954         wl_list_for_each(global, &display->global_list, link)
4955                 display->global_handler(display,
4956                                         global->name, global->interface,
4957                                         global->version, display->user_data);
4958 }
4959
4960 void
4961 display_set_global_handler_remove(struct display *display,
4962                            display_global_handler_t remove_handler)
4963 {
4964         display->global_handler_remove = remove_handler;
4965         if (!remove_handler)
4966                 return;
4967 }
4968
4969 void
4970 display_set_output_configure_handler(struct display *display,
4971                                      display_output_handler_t handler)
4972 {
4973         struct output *output;
4974
4975         display->output_configure_handler = handler;
4976         if (!handler)
4977                 return;
4978
4979         wl_list_for_each(output, &display->output_list, link) {
4980                 if (output->allocation.width == 0 &&
4981                     output->allocation.height == 0)
4982                         continue;
4983
4984                 (*display->output_configure_handler)(output,
4985                                                      display->user_data);
4986         }
4987 }
4988
4989 void
4990 output_set_user_data(struct output *output, void *data)
4991 {
4992         output->user_data = data;
4993 }
4994
4995 void *
4996 output_get_user_data(struct output *output)
4997 {
4998         return output->user_data;
4999 }
5000
5001 void
5002 output_set_destroy_handler(struct output *output,
5003                            display_output_handler_t handler)
5004 {
5005         output->destroy_handler = handler;
5006         /* FIXME: implement this, once we have way to remove outputs */
5007 }
5008
5009 void
5010 output_get_allocation(struct output *output, struct rectangle *base)
5011 {
5012         struct rectangle allocation = output->allocation;
5013
5014         switch (output->transform) {
5015         case WL_OUTPUT_TRANSFORM_90:
5016         case WL_OUTPUT_TRANSFORM_270:
5017         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
5018         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
5019                 /* Swap width and height */
5020                 allocation.width = output->allocation.height;
5021                 allocation.height = output->allocation.width;
5022                 break;
5023         }
5024
5025         *base = allocation;
5026 }
5027
5028 struct wl_output *
5029 output_get_wl_output(struct output *output)
5030 {
5031         return output->output;
5032 }
5033
5034 enum wl_output_transform
5035 output_get_transform(struct output *output)
5036 {
5037         return output->transform;
5038 }
5039
5040 uint32_t
5041 output_get_scale(struct output *output)
5042 {
5043         return output->scale;
5044 }
5045
5046 const char *
5047 output_get_make(struct output *output)
5048 {
5049         return output->make;
5050 }
5051
5052 const char *
5053 output_get_model(struct output *output)
5054 {
5055         return output->model;
5056 }
5057
5058 static void
5059 fini_xkb(struct input *input)
5060 {
5061         xkb_state_unref(input->xkb.state);
5062         xkb_keymap_unref(input->xkb.keymap);
5063 }
5064
5065 #define MIN(a,b) ((a) < (b) ? a : b)
5066
5067 static void
5068 display_add_input(struct display *d, uint32_t id)
5069 {
5070         struct input *input;
5071
5072         input = xzalloc(sizeof *input);
5073         input->display = d;
5074         input->seat = wl_registry_bind(d->registry, id, &wl_seat_interface,
5075                                        MIN(d->seat_version, 4));
5076         input->touch_focus = NULL;
5077         input->pointer_focus = NULL;
5078         input->keyboard_focus = NULL;
5079         wl_list_init(&input->touch_point_list);
5080         wl_list_insert(d->input_list.prev, &input->link);
5081
5082         wl_seat_add_listener(input->seat, &seat_listener, input);
5083         wl_seat_set_user_data(input->seat, input);
5084
5085         if (d->data_device_manager) {
5086                 input->data_device =
5087                         wl_data_device_manager_get_data_device(d->data_device_manager,
5088                                                                input->seat);
5089                 wl_data_device_add_listener(input->data_device,
5090                                             &data_device_listener,
5091                                             input);
5092         }
5093
5094         input->pointer_surface = wl_compositor_create_surface(d->compositor);
5095
5096         set_repeat_info(input, 40, 400);
5097
5098         input->repeat_timer_fd = timerfd_create(CLOCK_MONOTONIC,
5099                                                 TFD_CLOEXEC | TFD_NONBLOCK);
5100         input->repeat_task.run = keyboard_repeat_func;
5101         display_watch_fd(d, input->repeat_timer_fd,
5102                          EPOLLIN, &input->repeat_task);
5103 }
5104
5105 static void
5106 input_destroy(struct input *input)
5107 {
5108         input_remove_keyboard_focus(input);
5109         input_remove_pointer_focus(input);
5110
5111         if (input->drag_offer)
5112                 data_offer_destroy(input->drag_offer);
5113
5114         if (input->selection_offer)
5115                 data_offer_destroy(input->selection_offer);
5116
5117         if (input->data_device)
5118                 wl_data_device_destroy(input->data_device);
5119
5120         if (input->display->seat_version >= 3) {
5121                 if (input->pointer)
5122                         wl_pointer_release(input->pointer);
5123                 if (input->keyboard)
5124                         wl_keyboard_release(input->keyboard);
5125         }
5126
5127         fini_xkb(input);
5128
5129         wl_surface_destroy(input->pointer_surface);
5130
5131         wl_list_remove(&input->link);
5132         wl_seat_destroy(input->seat);
5133         close(input->repeat_timer_fd);
5134         free(input);
5135 }
5136
5137 static void
5138 init_workspace_manager(struct display *d, uint32_t id)
5139 {
5140         d->workspace_manager =
5141                 wl_registry_bind(d->registry, id,
5142                                  &workspace_manager_interface, 1);
5143         if (d->workspace_manager != NULL)
5144                 workspace_manager_add_listener(d->workspace_manager,
5145                                                &workspace_manager_listener,
5146                                                d);
5147 }
5148
5149 static void
5150 shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
5151 {
5152         struct display *d = data;
5153
5154         if (format == WL_SHM_FORMAT_RGB565)
5155                 d->has_rgb565 = 1;
5156 }
5157
5158 struct wl_shm_listener shm_listener = {
5159         shm_format
5160 };
5161
5162 static void
5163 xdg_shell_ping(void *data, struct xdg_shell *shell, uint32_t serial)
5164 {
5165         xdg_shell_pong(shell, serial);
5166 }
5167
5168 static const struct xdg_shell_listener xdg_shell_listener = {
5169         xdg_shell_ping,
5170 };
5171
5172 #define XDG_VERSION 4 /* The version of xdg-shell that we implement */
5173 #ifdef static_assert
5174 static_assert(XDG_VERSION == XDG_SHELL_VERSION_CURRENT,
5175               "Interface version doesn't match implementation version");
5176 #endif
5177
5178 static void
5179 registry_handle_global(void *data, struct wl_registry *registry, uint32_t id,
5180                        const char *interface, uint32_t version)
5181 {
5182         struct display *d = data;
5183         struct global *global;
5184
5185         global = xmalloc(sizeof *global);
5186         global->name = id;
5187         global->interface = strdup(interface);
5188         global->version = version;
5189         wl_list_insert(d->global_list.prev, &global->link);
5190
5191         if (strcmp(interface, "wl_compositor") == 0) {
5192                 d->compositor = wl_registry_bind(registry, id,
5193                                                  &wl_compositor_interface, 3);
5194         } else if (strcmp(interface, "wl_output") == 0) {
5195                 display_add_output(d, id);
5196         } else if (strcmp(interface, "wl_seat") == 0) {
5197                 d->seat_version = version;
5198                 display_add_input(d, id);
5199         } else if (strcmp(interface, "wl_shm") == 0) {
5200                 d->shm = wl_registry_bind(registry, id, &wl_shm_interface, 1);
5201                 wl_shm_add_listener(d->shm, &shm_listener, d);
5202         } else if (strcmp(interface, "wl_data_device_manager") == 0) {
5203                 d->data_device_manager =
5204                         wl_registry_bind(registry, id,
5205                                          &wl_data_device_manager_interface, 1);
5206         } else if (strcmp(interface, "xdg_shell") == 0) {
5207                 d->xdg_shell = wl_registry_bind(registry, id,
5208                                                 &xdg_shell_interface, 1);
5209                 xdg_shell_use_unstable_version(d->xdg_shell, XDG_VERSION);
5210                 xdg_shell_add_listener(d->xdg_shell, &xdg_shell_listener, d);
5211         } else if (strcmp(interface, "text_cursor_position") == 0) {
5212                 d->text_cursor_position =
5213                         wl_registry_bind(registry, id,
5214                                          &text_cursor_position_interface, 1);
5215         } else if (strcmp(interface, "workspace_manager") == 0) {
5216                 init_workspace_manager(d, id);
5217         } else if (strcmp(interface, "wl_subcompositor") == 0) {
5218                 d->subcompositor =
5219                         wl_registry_bind(registry, id,
5220                                          &wl_subcompositor_interface, 1);
5221         }
5222
5223         if (d->global_handler)
5224                 d->global_handler(d, id, interface, version, d->user_data);
5225 }
5226
5227 static void
5228 registry_handle_global_remove(void *data, struct wl_registry *registry,
5229                               uint32_t name)
5230 {
5231         struct display *d = data;
5232         struct global *global;
5233         struct global *tmp;
5234
5235         wl_list_for_each_safe(global, tmp, &d->global_list, link) {
5236                 if (global->name != name)
5237                         continue;
5238
5239                 if (strcmp(global->interface, "wl_output") == 0)
5240                         display_destroy_output(d, name);
5241
5242                 /* XXX: Should destroy remaining bound globals */
5243
5244                 if (d->global_handler_remove)
5245                         d->global_handler_remove(d, name, global->interface,
5246                                         global->version, d->user_data);
5247
5248                 wl_list_remove(&global->link);
5249                 free(global->interface);
5250                 free(global);
5251         }
5252 }
5253
5254 void *
5255 display_bind(struct display *display, uint32_t name,
5256              const struct wl_interface *interface, uint32_t version)
5257 {
5258         return wl_registry_bind(display->registry, name, interface, version);
5259 }
5260
5261 static const struct wl_registry_listener registry_listener = {
5262         registry_handle_global,
5263         registry_handle_global_remove
5264 };
5265
5266 #ifdef HAVE_CAIRO_EGL
5267 static int
5268 init_egl(struct display *d)
5269 {
5270         EGLint major, minor;
5271         EGLint n;
5272
5273 #ifdef USE_CAIRO_GLESV2
5274 #  define GL_BIT EGL_OPENGL_ES2_BIT
5275 #else
5276 #  define GL_BIT EGL_OPENGL_BIT
5277 #endif
5278
5279         static const EGLint argb_cfg_attribs[] = {
5280                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
5281                 EGL_RED_SIZE, 1,
5282                 EGL_GREEN_SIZE, 1,
5283                 EGL_BLUE_SIZE, 1,
5284                 EGL_ALPHA_SIZE, 1,
5285                 EGL_DEPTH_SIZE, 1,
5286                 EGL_RENDERABLE_TYPE, GL_BIT,
5287                 EGL_NONE
5288         };
5289
5290 #ifdef USE_CAIRO_GLESV2
5291         static const EGLint context_attribs[] = {
5292                 EGL_CONTEXT_CLIENT_VERSION, 2,
5293                 EGL_NONE
5294         };
5295         EGLint api = EGL_OPENGL_ES_API;
5296 #else
5297         EGLint *context_attribs = NULL;
5298         EGLint api = EGL_OPENGL_API;
5299 #endif
5300
5301         d->dpy = eglGetDisplay(d->display);
5302         if (!eglInitialize(d->dpy, &major, &minor)) {
5303                 fprintf(stderr, "failed to initialize EGL\n");
5304                 return -1;
5305         }
5306
5307         if (!eglBindAPI(api)) {
5308                 fprintf(stderr, "failed to bind EGL client API\n");
5309                 return -1;
5310         }
5311
5312         if (!eglChooseConfig(d->dpy, argb_cfg_attribs,
5313                              &d->argb_config, 1, &n) || n != 1) {
5314                 fprintf(stderr, "failed to choose argb EGL config\n");
5315                 return -1;
5316         }
5317
5318         d->argb_ctx = eglCreateContext(d->dpy, d->argb_config,
5319                                        EGL_NO_CONTEXT, context_attribs);
5320         if (d->argb_ctx == NULL) {
5321                 fprintf(stderr, "failed to create EGL context\n");
5322                 return -1;
5323         }
5324
5325         d->argb_device = cairo_egl_device_create(d->dpy, d->argb_ctx);
5326         if (cairo_device_status(d->argb_device) != CAIRO_STATUS_SUCCESS) {
5327                 fprintf(stderr, "failed to get cairo EGL argb device\n");
5328                 return -1;
5329         }
5330
5331         return 0;
5332 }
5333
5334 static void
5335 fini_egl(struct display *display)
5336 {
5337         cairo_device_destroy(display->argb_device);
5338
5339         eglMakeCurrent(display->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE,
5340                        EGL_NO_CONTEXT);
5341
5342         eglTerminate(display->dpy);
5343         eglReleaseThread();
5344 }
5345 #endif
5346
5347 static void
5348 init_dummy_surface(struct display *display)
5349 {
5350         int len;
5351         void *data;
5352
5353         len = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, 1);
5354         data = malloc(len);
5355         display->dummy_surface =
5356                 cairo_image_surface_create_for_data(data, CAIRO_FORMAT_ARGB32,
5357                                                     1, 1, len);
5358         display->dummy_surface_data = data;
5359 }
5360
5361 static void
5362 handle_display_data(struct task *task, uint32_t events)
5363 {
5364         struct display *display =
5365                 container_of(task, struct display, display_task);
5366         struct epoll_event ep;
5367         int ret;
5368
5369         display->display_fd_events = events;
5370
5371         if (events & EPOLLERR || events & EPOLLHUP) {
5372                 display_exit(display);
5373                 return;
5374         }
5375
5376         if (events & EPOLLIN) {
5377                 ret = wl_display_dispatch(display->display);
5378                 if (ret == -1) {
5379                         display_exit(display);
5380                         return;
5381                 }
5382         }
5383
5384         if (events & EPOLLOUT) {
5385                 ret = wl_display_flush(display->display);
5386                 if (ret == 0) {
5387                         ep.events = EPOLLIN | EPOLLERR | EPOLLHUP;
5388                         ep.data.ptr = &display->display_task;
5389                         epoll_ctl(display->epoll_fd, EPOLL_CTL_MOD,
5390                                   display->display_fd, &ep);
5391                 } else if (ret == -1 && errno != EAGAIN) {
5392                         display_exit(display);
5393                         return;
5394                 }
5395         }
5396 }
5397
5398 static void
5399 log_handler(const char *format, va_list args)
5400 {
5401         vfprintf(stderr, format, args);
5402 }
5403
5404 struct display *
5405 display_create(int *argc, char *argv[])
5406 {
5407         struct display *d;
5408
5409         wl_log_set_handler_client(log_handler);
5410
5411         d = zalloc(sizeof *d);
5412         if (d == NULL)
5413                 return NULL;
5414
5415         d->display = wl_display_connect(NULL);
5416         if (d->display == NULL) {
5417                 fprintf(stderr, "failed to connect to Wayland display: %m\n");
5418                 free(d);
5419                 return NULL;
5420         }
5421
5422         d->xkb_context = xkb_context_new(0);
5423         if (d->xkb_context == NULL) {
5424                 fprintf(stderr, "Failed to create XKB context\n");
5425                 free(d);
5426                 return NULL;
5427         }
5428
5429         d->epoll_fd = os_epoll_create_cloexec();
5430         d->display_fd = wl_display_get_fd(d->display);
5431         d->display_task.run = handle_display_data;
5432         display_watch_fd(d, d->display_fd, EPOLLIN | EPOLLERR | EPOLLHUP,
5433                          &d->display_task);
5434
5435         wl_list_init(&d->deferred_list);
5436         wl_list_init(&d->input_list);
5437         wl_list_init(&d->output_list);
5438         wl_list_init(&d->global_list);
5439
5440         d->workspace = 0;
5441         d->workspace_count = 1;
5442
5443         d->registry = wl_display_get_registry(d->display);
5444         wl_registry_add_listener(d->registry, &registry_listener, d);
5445
5446         if (wl_display_dispatch(d->display) < 0) {
5447                 fprintf(stderr, "Failed to process Wayland connection: %m\n");
5448                 return NULL;
5449         }
5450
5451 #ifdef HAVE_CAIRO_EGL
5452         if (init_egl(d) < 0)
5453                 fprintf(stderr, "EGL does not seem to work, "
5454                         "falling back to software rendering and wl_shm.\n");
5455 #endif
5456
5457         create_cursors(d);
5458
5459         d->theme = theme_create();
5460
5461         wl_list_init(&d->window_list);
5462
5463         init_dummy_surface(d);
5464
5465         return d;
5466 }
5467
5468 static void
5469 display_destroy_outputs(struct display *display)
5470 {
5471         struct output *tmp;
5472         struct output *output;
5473
5474         wl_list_for_each_safe(output, tmp, &display->output_list, link)
5475                 output_destroy(output);
5476 }
5477
5478 static void
5479 display_destroy_inputs(struct display *display)
5480 {
5481         struct input *tmp;
5482         struct input *input;
5483
5484         wl_list_for_each_safe(input, tmp, &display->input_list, link)
5485                 input_destroy(input);
5486 }
5487
5488 void
5489 display_destroy(struct display *display)
5490 {
5491         if (!wl_list_empty(&display->window_list))
5492                 fprintf(stderr, "toytoolkit warning: %d windows exist.\n",
5493                         wl_list_length(&display->window_list));
5494
5495         if (!wl_list_empty(&display->deferred_list))
5496                 fprintf(stderr, "toytoolkit warning: deferred tasks exist.\n");
5497
5498         cairo_surface_destroy(display->dummy_surface);
5499         free(display->dummy_surface_data);
5500
5501         display_destroy_outputs(display);
5502         display_destroy_inputs(display);
5503
5504         xkb_context_unref(display->xkb_context);
5505
5506         theme_destroy(display->theme);
5507         destroy_cursors(display);
5508
5509 #ifdef HAVE_CAIRO_EGL
5510         if (display->argb_device)
5511                 fini_egl(display);
5512 #endif
5513
5514         if (display->subcompositor)
5515                 wl_subcompositor_destroy(display->subcompositor);
5516
5517         if (display->xdg_shell)
5518                 xdg_shell_destroy(display->xdg_shell);
5519
5520         if (display->shm)
5521                 wl_shm_destroy(display->shm);
5522
5523         if (display->data_device_manager)
5524                 wl_data_device_manager_destroy(display->data_device_manager);
5525
5526         wl_compositor_destroy(display->compositor);
5527         wl_registry_destroy(display->registry);
5528
5529         close(display->epoll_fd);
5530
5531         if (!(display->display_fd_events & EPOLLERR) &&
5532             !(display->display_fd_events & EPOLLHUP))
5533                 wl_display_flush(display->display);
5534
5535         wl_display_disconnect(display->display);
5536         free(display);
5537 }
5538
5539 void
5540 display_set_user_data(struct display *display, void *data)
5541 {
5542         display->user_data = data;
5543 }
5544
5545 void *
5546 display_get_user_data(struct display *display)
5547 {
5548         return display->user_data;
5549 }
5550
5551 struct wl_display *
5552 display_get_display(struct display *display)
5553 {
5554         return display->display;
5555 }
5556
5557 int
5558 display_has_subcompositor(struct display *display)
5559 {
5560         if (display->subcompositor)
5561                 return 1;
5562
5563         wl_display_roundtrip(display->display);
5564
5565         return display->subcompositor != NULL;
5566 }
5567
5568 cairo_device_t *
5569 display_get_cairo_device(struct display *display)
5570 {
5571         return display->argb_device;
5572 }
5573
5574 struct output *
5575 display_get_output(struct display *display)
5576 {
5577         return container_of(display->output_list.next, struct output, link);
5578 }
5579
5580 struct wl_compositor *
5581 display_get_compositor(struct display *display)
5582 {
5583         return display->compositor;
5584 }
5585
5586 uint32_t
5587 display_get_serial(struct display *display)
5588 {
5589         return display->serial;
5590 }
5591
5592 EGLDisplay
5593 display_get_egl_display(struct display *d)
5594 {
5595         return d->dpy;
5596 }
5597
5598 struct wl_data_source *
5599 display_create_data_source(struct display *display)
5600 {
5601         if (display->data_device_manager)
5602                 return wl_data_device_manager_create_data_source(display->data_device_manager);
5603         else
5604                 return NULL;
5605 }
5606
5607 EGLConfig
5608 display_get_argb_egl_config(struct display *d)
5609 {
5610         return d->argb_config;
5611 }
5612
5613 int
5614 display_acquire_window_surface(struct display *display,
5615                                struct window *window,
5616                                EGLContext ctx)
5617 {
5618         struct surface *surface = window->main_surface;
5619
5620         if (surface->buffer_type != WINDOW_BUFFER_TYPE_EGL_WINDOW)
5621                 return -1;
5622
5623         widget_get_cairo_surface(window->main_surface->widget);
5624         return surface->toysurface->acquire(surface->toysurface, ctx);
5625 }
5626
5627 void
5628 display_release_window_surface(struct display *display,
5629                                struct window *window)
5630 {
5631         struct surface *surface = window->main_surface;
5632
5633         if (surface->buffer_type != WINDOW_BUFFER_TYPE_EGL_WINDOW)
5634                 return;
5635
5636         surface->toysurface->release(surface->toysurface);
5637 }
5638
5639 void
5640 display_defer(struct display *display, struct task *task)
5641 {
5642         wl_list_insert(&display->deferred_list, &task->link);
5643 }
5644
5645 void
5646 display_watch_fd(struct display *display,
5647                  int fd, uint32_t events, struct task *task)
5648 {
5649         struct epoll_event ep;
5650
5651         ep.events = events;
5652         ep.data.ptr = task;
5653         epoll_ctl(display->epoll_fd, EPOLL_CTL_ADD, fd, &ep);
5654 }
5655
5656 void
5657 display_unwatch_fd(struct display *display, int fd)
5658 {
5659         epoll_ctl(display->epoll_fd, EPOLL_CTL_DEL, fd, NULL);
5660 }
5661
5662 void
5663 display_run(struct display *display)
5664 {
5665         struct task *task;
5666         struct epoll_event ep[16];
5667         int i, count, ret;
5668
5669         display->running = 1;
5670         while (1) {
5671                 while (!wl_list_empty(&display->deferred_list)) {
5672                         task = container_of(display->deferred_list.prev,
5673                                             struct task, link);
5674                         wl_list_remove(&task->link);
5675                         task->run(task, 0);
5676                 }
5677
5678                 wl_display_dispatch_pending(display->display);
5679
5680                 if (!display->running)
5681                         break;
5682
5683                 ret = wl_display_flush(display->display);
5684                 if (ret < 0 && errno == EAGAIN) {
5685                         ep[0].events =
5686                                 EPOLLIN | EPOLLOUT | EPOLLERR | EPOLLHUP;
5687                         ep[0].data.ptr = &display->display_task;
5688
5689                         epoll_ctl(display->epoll_fd, EPOLL_CTL_MOD,
5690                                   display->display_fd, &ep[0]);
5691                 } else if (ret < 0) {
5692                         break;
5693                 }
5694
5695                 count = epoll_wait(display->epoll_fd,
5696                                    ep, ARRAY_LENGTH(ep), -1);
5697                 for (i = 0; i < count; i++) {
5698                         task = ep[i].data.ptr;
5699                         task->run(task, ep[i].events);
5700                 }
5701         }
5702 }
5703
5704 void
5705 display_exit(struct display *display)
5706 {
5707         display->running = 0;
5708 }
5709
5710 void
5711 keysym_modifiers_add(struct wl_array *modifiers_map,
5712                      const char *name)
5713 {
5714         size_t len = strlen(name) + 1;
5715         char *p;
5716
5717         p = wl_array_add(modifiers_map, len);
5718
5719         if (p == NULL)
5720                 return;
5721
5722         strncpy(p, name, len);
5723 }
5724
5725 static xkb_mod_index_t
5726 keysym_modifiers_get_index(struct wl_array *modifiers_map,
5727                            const char *name)
5728 {
5729         xkb_mod_index_t index = 0;
5730         char *p = modifiers_map->data;
5731
5732         while ((const char *)p < (const char *)(modifiers_map->data + modifiers_map->size)) {
5733                 if (strcmp(p, name) == 0)
5734                         return index;
5735
5736                 index++;
5737                 p += strlen(p) + 1;
5738         }
5739
5740         return XKB_MOD_INVALID;
5741 }
5742
5743 xkb_mod_mask_t
5744 keysym_modifiers_get_mask(struct wl_array *modifiers_map,
5745                           const char *name)
5746 {
5747         xkb_mod_index_t index = keysym_modifiers_get_index(modifiers_map, name);
5748
5749         if (index == XKB_MOD_INVALID)
5750                 return XKB_MOD_INVALID;
5751
5752         return 1 << index;
5753 }
5754
5755 void *
5756 fail_on_null(void *p)
5757 {
5758         if (p == NULL) {
5759                 fprintf(stderr, "%s: out of memory\n", program_invocation_short_name);
5760                 exit(EXIT_FAILURE);
5761         }
5762
5763         return p;
5764 }
5765
5766 void *
5767 xmalloc(size_t s)
5768 {
5769         return fail_on_null(malloc(s));
5770 }
5771
5772 void *
5773 xzalloc(size_t s)
5774 {
5775         return fail_on_null(zalloc(s));
5776 }
5777
5778 char *
5779 xstrdup(const char *s)
5780 {
5781         return fail_on_null(strdup(s));
5782 }
5783
5784 void *
5785 xrealloc(char *p, size_t s)
5786 {
5787         return fail_on_null(realloc(p, s));
5788 }