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 void
2240 window_show_frame_menu(struct window *window,
2241                        struct input *input, uint32_t time)
2242 {
2243         int32_t x, y;
2244
2245         if (window->xdg_surface) {
2246                 input_get_position(input, &x, &y);
2247                 xdg_surface_show_window_menu(window->xdg_surface,
2248                                              input_get_seat(input),
2249                                              window->display->serial,
2250                                              x - 10, y - 10);
2251         }
2252 }
2253
2254 static int
2255 frame_enter_handler(struct widget *widget,
2256                     struct input *input, float x, float y, void *data)
2257 {
2258         struct window_frame *frame = data;
2259         enum theme_location location;
2260
2261         location = frame_pointer_enter(frame->frame, input, x, y);
2262         if (frame_status(frame->frame) & FRAME_STATUS_REPAINT)
2263                 widget_schedule_redraw(frame->widget);
2264
2265         return frame_get_pointer_image_for_location(data, location);
2266 }
2267
2268 static int
2269 frame_motion_handler(struct widget *widget,
2270                      struct input *input, uint32_t time,
2271                      float x, float y, void *data)
2272 {
2273         struct window_frame *frame = data;
2274         enum theme_location location;
2275
2276         location = frame_pointer_motion(frame->frame, input, x, y);
2277         if (frame_status(frame->frame) & FRAME_STATUS_REPAINT)
2278                 widget_schedule_redraw(frame->widget);
2279
2280         return frame_get_pointer_image_for_location(data, location);
2281 }
2282
2283 static void
2284 frame_leave_handler(struct widget *widget,
2285                     struct input *input, void *data)
2286 {
2287         struct window_frame *frame = data;
2288
2289         frame_pointer_leave(frame->frame, input);
2290         if (frame_status(frame->frame) & FRAME_STATUS_REPAINT)
2291                 widget_schedule_redraw(frame->widget);
2292 }
2293
2294 static void
2295 frame_handle_status(struct window_frame *frame, struct input *input,
2296                     uint32_t time, enum theme_location location)
2297 {
2298         struct window *window = frame->widget->window;
2299         uint32_t status;
2300
2301         status = frame_status(frame->frame);
2302         if (status & FRAME_STATUS_REPAINT)
2303                 widget_schedule_redraw(frame->widget);
2304
2305         if (status & FRAME_STATUS_MINIMIZE) {
2306                 window_set_minimized(window);
2307                 frame_status_clear(frame->frame, FRAME_STATUS_MINIMIZE);
2308         }
2309
2310         if (status & FRAME_STATUS_MENU) {
2311                 window_show_frame_menu(window, input, time);
2312                 frame_status_clear(frame->frame, FRAME_STATUS_MENU);
2313         }
2314
2315         if (status & FRAME_STATUS_MAXIMIZE) {
2316                 window_set_maximized(window, !window->maximized);
2317                 frame_status_clear(frame->frame, FRAME_STATUS_MAXIMIZE);
2318         }
2319
2320         if (status & FRAME_STATUS_CLOSE) {
2321                 window_close(window);
2322                 return;
2323         }
2324
2325         if ((status & FRAME_STATUS_MOVE) && window->xdg_surface) {
2326                 input_ungrab(input);
2327                 xdg_surface_move(window->xdg_surface,
2328                                  input_get_seat(input),
2329                                  window->display->serial);
2330
2331                 frame_status_clear(frame->frame, FRAME_STATUS_MOVE);
2332         }
2333
2334         if ((status & FRAME_STATUS_RESIZE) && window->xdg_surface) {
2335                 input_ungrab(input);
2336
2337                 xdg_surface_resize(window->xdg_surface,
2338                                    input_get_seat(input),
2339                                    window->display->serial,
2340                                    location);
2341
2342                 frame_status_clear(frame->frame, FRAME_STATUS_RESIZE);
2343         }
2344 }
2345
2346 #define DOUBLE_CLICK_PERIOD 250
2347 static void
2348 frame_button_handler(struct widget *widget,
2349                      struct input *input, uint32_t time,
2350                      uint32_t button, enum wl_pointer_button_state state,
2351                      void *data)
2352
2353 {
2354         struct window_frame *frame = data;
2355         enum theme_location location;
2356
2357         frame->double_click = 0;
2358         if (state == WL_POINTER_BUTTON_STATE_PRESSED) {
2359                 if (time - frame->last_time <= DOUBLE_CLICK_PERIOD) {
2360                         frame->double_click = 1;
2361                         frame->did_double = 1;
2362                 } else
2363                         frame->did_double = 0;
2364
2365                 frame->last_time = time;
2366         } else if (frame->did_double == 1) {
2367                 frame->double_click = 1;
2368                 frame->did_double = 0;
2369         }
2370
2371         if (frame->double_click)
2372                 location = frame_double_click(frame->frame, input,
2373                                               button, state);
2374         else
2375                 location = frame_pointer_button(frame->frame, input,
2376                                                 button, state);
2377
2378         frame_handle_status(frame, input, time, location);
2379 }
2380
2381 static void
2382 frame_touch_down_handler(struct widget *widget, struct input *input,
2383                          uint32_t serial, uint32_t time, int32_t id,
2384                          float x, float y, void *data)
2385 {
2386         struct window_frame *frame = data;
2387
2388         frame_touch_down(frame->frame, input, id, x, y);
2389         frame_handle_status(frame, input, time, THEME_LOCATION_CLIENT_AREA);
2390 }
2391
2392 static void
2393 frame_touch_up_handler(struct widget *widget,
2394                          struct input *input, uint32_t serial, uint32_t time,
2395                          int32_t id, void *data)
2396 {
2397         struct window_frame *frame = data;
2398
2399         frame_touch_up(frame->frame, input, id);
2400         frame_handle_status(frame, input, time, THEME_LOCATION_CLIENT_AREA);
2401 }
2402
2403 struct widget *
2404 window_frame_create(struct window *window, void *data)
2405 {
2406         struct window_frame *frame;
2407         uint32_t buttons;
2408
2409         if (window->custom) {
2410                 buttons = FRAME_BUTTON_NONE;
2411         } else {
2412                 buttons = FRAME_BUTTON_ALL;
2413         }
2414
2415         frame = xzalloc(sizeof *frame);
2416         frame->frame = frame_create(window->display->theme, 0, 0,
2417                                     buttons, window->title);
2418
2419         frame->widget = window_add_widget(window, frame);
2420         frame->child = widget_add_widget(frame->widget, data);
2421
2422         widget_set_redraw_handler(frame->widget, frame_redraw_handler);
2423         widget_set_resize_handler(frame->widget, frame_resize_handler);
2424         widget_set_enter_handler(frame->widget, frame_enter_handler);
2425         widget_set_leave_handler(frame->widget, frame_leave_handler);
2426         widget_set_motion_handler(frame->widget, frame_motion_handler);
2427         widget_set_button_handler(frame->widget, frame_button_handler);
2428         widget_set_touch_down_handler(frame->widget, frame_touch_down_handler);
2429         widget_set_touch_up_handler(frame->widget, frame_touch_up_handler);
2430
2431         window->frame = frame;
2432
2433         return frame->child;
2434 }
2435
2436 void
2437 window_frame_set_child_size(struct widget *widget, int child_width,
2438                             int child_height)
2439 {
2440         struct display *display = widget->window->display;
2441         struct theme *t = display->theme;
2442         int decoration_width, decoration_height;
2443         int width, height;
2444         int margin = widget->window->maximized ? 0 : t->margin;
2445
2446         if (!widget->window->fullscreen) {
2447                 decoration_width = (t->width + margin) * 2;
2448                 decoration_height = t->width +
2449                         t->titlebar_height + margin * 2;
2450
2451                 width = child_width + decoration_width;
2452                 height = child_height + decoration_height;
2453         } else {
2454                 width = child_width;
2455                 height = child_height;
2456         }
2457
2458         window_schedule_resize(widget->window, width, height);
2459 }
2460
2461 static void
2462 window_frame_destroy(struct window_frame *frame)
2463 {
2464         frame_destroy(frame->frame);
2465
2466         /* frame->child must be destroyed by the application */
2467         widget_destroy(frame->widget);
2468         free(frame);
2469 }
2470
2471 static void
2472 input_set_focus_widget(struct input *input, struct widget *focus,
2473                        float x, float y)
2474 {
2475         struct widget *old, *widget;
2476         int cursor;
2477
2478         if (focus == input->focus_widget)
2479                 return;
2480
2481         old = input->focus_widget;
2482         if (old) {
2483                 widget = old;
2484                 if (input->grab)
2485                         widget = input->grab;
2486                 if (widget->leave_handler)
2487                         widget->leave_handler(old, input, widget->user_data);
2488                 input->focus_widget = NULL;
2489         }
2490
2491         if (focus) {
2492                 widget = focus;
2493                 if (input->grab)
2494                         widget = input->grab;
2495                 input->focus_widget = focus;
2496                 if (widget->enter_handler)
2497                         cursor = widget->enter_handler(focus, input, x, y,
2498                                                        widget->user_data);
2499                 else
2500                         cursor = widget->default_cursor;
2501
2502                 input_set_pointer_image(input, cursor);
2503         }
2504 }
2505
2506 void
2507 touch_grab(struct input  *input, int32_t touch_id)
2508 {
2509         input->touch_grab = 1;
2510         input->touch_grab_id = touch_id;
2511 }
2512
2513 void
2514 touch_ungrab(struct input *input)
2515 {
2516         struct touch_point *tp, *tmp;
2517
2518         input->touch_grab = 0;
2519
2520         wl_list_for_each_safe(tp, tmp,
2521                         &input->touch_point_list, link) {
2522                 if (tp->id != input->touch_grab_id)
2523                         continue;
2524                 wl_list_remove(&tp->link);
2525                 free(tp);
2526
2527                 return;
2528         }
2529 }
2530
2531 void
2532 input_grab(struct input *input, struct widget *widget, uint32_t button)
2533 {
2534         input->grab = widget;
2535         input->grab_button = button;
2536
2537         input_set_focus_widget(input, widget, input->sx, input->sy);
2538 }
2539
2540 void
2541 input_ungrab(struct input *input)
2542 {
2543         struct widget *widget;
2544
2545         input->grab = NULL;
2546         if (input->pointer_focus) {
2547                 widget = window_find_widget(input->pointer_focus,
2548                                             input->sx, input->sy);
2549                 input_set_focus_widget(input, widget, input->sx, input->sy);
2550         }
2551 }
2552
2553 static void
2554 input_remove_pointer_focus(struct input *input)
2555 {
2556         struct window *window = input->pointer_focus;
2557
2558         if (!window)
2559                 return;
2560
2561         input_set_focus_widget(input, NULL, 0, 0);
2562
2563         input->pointer_focus = NULL;
2564         input->current_cursor = CURSOR_UNSET;
2565 }
2566
2567 static void
2568 pointer_handle_enter(void *data, struct wl_pointer *pointer,
2569                      uint32_t serial, struct wl_surface *surface,
2570                      wl_fixed_t sx_w, wl_fixed_t sy_w)
2571 {
2572         struct input *input = data;
2573         struct window *window;
2574         struct widget *widget;
2575         float sx = wl_fixed_to_double(sx_w);
2576         float sy = wl_fixed_to_double(sy_w);
2577
2578         if (!surface) {
2579                 /* enter event for a window we've just destroyed */
2580                 return;
2581         }
2582
2583         window = wl_surface_get_user_data(surface);
2584         if (surface != window->main_surface->surface) {
2585                 DBG("Ignoring input event from subsurface %p\n", surface);
2586                 return;
2587         }
2588
2589         input->display->serial = serial;
2590         input->pointer_enter_serial = serial;
2591         input->pointer_focus = window;
2592
2593         input->sx = sx;
2594         input->sy = sy;
2595
2596         widget = window_find_widget(window, sx, sy);
2597         input_set_focus_widget(input, widget, sx, sy);
2598 }
2599
2600 static void
2601 pointer_handle_leave(void *data, struct wl_pointer *pointer,
2602                      uint32_t serial, struct wl_surface *surface)
2603 {
2604         struct input *input = data;
2605
2606         input->display->serial = serial;
2607         input_remove_pointer_focus(input);
2608 }
2609
2610 static void
2611 pointer_handle_motion(void *data, struct wl_pointer *pointer,
2612                       uint32_t time, wl_fixed_t sx_w, wl_fixed_t sy_w)
2613 {
2614         struct input *input = data;
2615         struct window *window = input->pointer_focus;
2616         struct widget *widget;
2617         int cursor;
2618         float sx = wl_fixed_to_double(sx_w);
2619         float sy = wl_fixed_to_double(sy_w);
2620
2621         if (!window)
2622                 return;
2623
2624         input->sx = sx;
2625         input->sy = sy;
2626
2627         /* when making the window smaller - e.g. after a unmaximise we might
2628          * still have a pending motion event that the compositor has picked
2629          * based on the old surface dimensions
2630          */
2631         if (sx > window->main_surface->allocation.width ||
2632             sy > window->main_surface->allocation.height)
2633                 return;
2634
2635         if (!(input->grab && input->grab_button)) {
2636                 widget = window_find_widget(window, sx, sy);
2637                 input_set_focus_widget(input, widget, sx, sy);
2638         }
2639
2640         if (input->grab)
2641                 widget = input->grab;
2642         else
2643                 widget = input->focus_widget;
2644         if (widget) {
2645                 if (widget->motion_handler)
2646                         cursor = widget->motion_handler(input->focus_widget,
2647                                                         input, time, sx, sy,
2648                                                         widget->user_data);
2649                 else
2650                         cursor = widget->default_cursor;
2651         } else
2652                 cursor = CURSOR_LEFT_PTR;
2653
2654         input_set_pointer_image(input, cursor);
2655 }
2656
2657 static void
2658 pointer_handle_button(void *data, struct wl_pointer *pointer, uint32_t serial,
2659                       uint32_t time, uint32_t button, uint32_t state_w)
2660 {
2661         struct input *input = data;
2662         struct widget *widget;
2663         enum wl_pointer_button_state state = state_w;
2664
2665         input->display->serial = serial;
2666         if (input->focus_widget && input->grab == NULL &&
2667             state == WL_POINTER_BUTTON_STATE_PRESSED)
2668                 input_grab(input, input->focus_widget, button);
2669
2670         widget = input->grab;
2671         if (widget && widget->button_handler)
2672                 (*widget->button_handler)(widget,
2673                                           input, time,
2674                                           button, state,
2675                                           input->grab->user_data);
2676
2677         if (input->grab && input->grab_button == button &&
2678             state == WL_POINTER_BUTTON_STATE_RELEASED)
2679                 input_ungrab(input);
2680 }
2681
2682 static void
2683 pointer_handle_axis(void *data, struct wl_pointer *pointer,
2684                     uint32_t time, uint32_t axis, wl_fixed_t value)
2685 {
2686         struct input *input = data;
2687         struct widget *widget;
2688
2689         widget = input->focus_widget;
2690         if (input->grab)
2691                 widget = input->grab;
2692         if (widget && widget->axis_handler)
2693                 (*widget->axis_handler)(widget,
2694                                         input, time,
2695                                         axis, value,
2696                                         widget->user_data);
2697 }
2698
2699 static const struct wl_pointer_listener pointer_listener = {
2700         pointer_handle_enter,
2701         pointer_handle_leave,
2702         pointer_handle_motion,
2703         pointer_handle_button,
2704         pointer_handle_axis,
2705 };
2706
2707 static void
2708 input_remove_keyboard_focus(struct input *input)
2709 {
2710         struct window *window = input->keyboard_focus;
2711         struct itimerspec its;
2712
2713         its.it_interval.tv_sec = 0;
2714         its.it_interval.tv_nsec = 0;
2715         its.it_value.tv_sec = 0;
2716         its.it_value.tv_nsec = 0;
2717         timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
2718
2719         if (!window)
2720                 return;
2721
2722         if (window->keyboard_focus_handler)
2723                 (*window->keyboard_focus_handler)(window, NULL,
2724                                                   window->user_data);
2725
2726         input->keyboard_focus = NULL;
2727 }
2728
2729 static void
2730 keyboard_repeat_func(struct task *task, uint32_t events)
2731 {
2732         struct input *input =
2733                 container_of(task, struct input, repeat_task);
2734         struct window *window = input->keyboard_focus;
2735         uint64_t exp;
2736
2737         if (read(input->repeat_timer_fd, &exp, sizeof exp) != sizeof exp)
2738                 /* If we change the timer between the fd becoming
2739                  * readable and getting here, there'll be nothing to
2740                  * read and we get EAGAIN. */
2741                 return;
2742
2743         if (window && window->key_handler) {
2744                 (*window->key_handler)(window, input, input->repeat_time,
2745                                        input->repeat_key, input->repeat_sym,
2746                                        WL_KEYBOARD_KEY_STATE_PRESSED,
2747                                        window->user_data);
2748         }
2749 }
2750
2751 static void
2752 keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
2753                        uint32_t format, int fd, uint32_t size)
2754 {
2755         struct input *input = data;
2756         struct xkb_keymap *keymap;
2757         struct xkb_state *state;
2758         char *map_str;
2759
2760         if (!data) {
2761                 close(fd);
2762                 return;
2763         }
2764
2765         if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
2766                 close(fd);
2767                 return;
2768         }
2769
2770         map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
2771         if (map_str == MAP_FAILED) {
2772                 close(fd);
2773                 return;
2774         }
2775
2776         keymap = xkb_keymap_new_from_string(input->display->xkb_context,
2777                                             map_str,
2778                                             XKB_KEYMAP_FORMAT_TEXT_V1,
2779                                             0);
2780         munmap(map_str, size);
2781         close(fd);
2782
2783         if (!keymap) {
2784                 fprintf(stderr, "failed to compile keymap\n");
2785                 return;
2786         }
2787
2788         state = xkb_state_new(keymap);
2789         if (!state) {
2790                 fprintf(stderr, "failed to create XKB state\n");
2791                 xkb_keymap_unref(keymap);
2792                 return;
2793         }
2794
2795         xkb_keymap_unref(input->xkb.keymap);
2796         xkb_state_unref(input->xkb.state);
2797         input->xkb.keymap = keymap;
2798         input->xkb.state = state;
2799
2800         input->xkb.control_mask =
2801                 1 << xkb_keymap_mod_get_index(input->xkb.keymap, "Control");
2802         input->xkb.alt_mask =
2803                 1 << xkb_keymap_mod_get_index(input->xkb.keymap, "Mod1");
2804         input->xkb.shift_mask =
2805                 1 << xkb_keymap_mod_get_index(input->xkb.keymap, "Shift");
2806 }
2807
2808 static void
2809 keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
2810                       uint32_t serial, struct wl_surface *surface,
2811                       struct wl_array *keys)
2812 {
2813         struct input *input = data;
2814         struct window *window;
2815
2816         input->display->serial = serial;
2817         input->keyboard_focus = wl_surface_get_user_data(surface);
2818
2819         window = input->keyboard_focus;
2820         if (window->keyboard_focus_handler)
2821                 (*window->keyboard_focus_handler)(window,
2822                                                   input, window->user_data);
2823 }
2824
2825 static void
2826 keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,
2827                       uint32_t serial, struct wl_surface *surface)
2828 {
2829         struct input *input = data;
2830
2831         input->display->serial = serial;
2832         input_remove_keyboard_focus(input);
2833 }
2834
2835 static void
2836 keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
2837                     uint32_t serial, uint32_t time, uint32_t key,
2838                     uint32_t state_w)
2839 {
2840         struct input *input = data;
2841         struct window *window = input->keyboard_focus;
2842         uint32_t code, num_syms;
2843         enum wl_keyboard_key_state state = state_w;
2844         const xkb_keysym_t *syms;
2845         xkb_keysym_t sym;
2846         struct itimerspec its;
2847
2848         input->display->serial = serial;
2849         code = key + 8;
2850         if (!window || !input->xkb.state)
2851                 return;
2852
2853         /* We only use input grabs for pointer events for now, so just
2854          * ignore key presses if a grab is active.  We expand the key
2855          * event delivery mechanism to route events to widgets to
2856          * properly handle key grabs.  In the meantime, this prevents
2857          * key event devlivery while a grab is active. */
2858         if (input->grab && input->grab_button == 0)
2859                 return;
2860
2861         num_syms = xkb_state_key_get_syms(input->xkb.state, code, &syms);
2862
2863         sym = XKB_KEY_NoSymbol;
2864         if (num_syms == 1)
2865                 sym = syms[0];
2866
2867
2868         if (sym == XKB_KEY_F5 && input->modifiers == MOD_ALT_MASK) {
2869                 if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
2870                         window_set_maximized(window, !window->maximized);
2871         } else if (sym == XKB_KEY_F11 &&
2872                    window->fullscreen_handler &&
2873                    state == WL_KEYBOARD_KEY_STATE_PRESSED) {
2874                 window->fullscreen_handler(window, window->user_data);
2875         } else if (sym == XKB_KEY_F4 &&
2876                    input->modifiers == MOD_ALT_MASK &&
2877                    state == WL_KEYBOARD_KEY_STATE_PRESSED) {
2878                 window_close(window);
2879         } else if (window->key_handler) {
2880                 (*window->key_handler)(window, input, time, key,
2881                                        sym, state, window->user_data);
2882         }
2883
2884         if (state == WL_KEYBOARD_KEY_STATE_RELEASED &&
2885             key == input->repeat_key) {
2886                 its.it_interval.tv_sec = 0;
2887                 its.it_interval.tv_nsec = 0;
2888                 its.it_value.tv_sec = 0;
2889                 its.it_value.tv_nsec = 0;
2890                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
2891         } else if (state == WL_KEYBOARD_KEY_STATE_PRESSED &&
2892                    xkb_keymap_key_repeats(input->xkb.keymap, code)) {
2893                 input->repeat_sym = sym;
2894                 input->repeat_key = key;
2895                 input->repeat_time = time;
2896                 its.it_interval.tv_sec = input->repeat_rate_sec;
2897                 its.it_interval.tv_nsec = input->repeat_rate_nsec;
2898                 its.it_value.tv_sec = input->repeat_delay_sec;
2899                 its.it_value.tv_nsec = input->repeat_delay_nsec;
2900                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
2901         }
2902 }
2903
2904 static void
2905 keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
2906                           uint32_t serial, uint32_t mods_depressed,
2907                           uint32_t mods_latched, uint32_t mods_locked,
2908                           uint32_t group)
2909 {
2910         struct input *input = data;
2911         xkb_mod_mask_t mask;
2912
2913         /* If we're not using a keymap, then we don't handle PC-style modifiers */
2914         if (!input->xkb.keymap)
2915                 return;
2916
2917         xkb_state_update_mask(input->xkb.state, mods_depressed, mods_latched,
2918                               mods_locked, 0, 0, group);
2919         mask = xkb_state_serialize_mods(input->xkb.state,
2920                                         XKB_STATE_MODS_DEPRESSED |
2921                                         XKB_STATE_MODS_LATCHED);
2922         input->modifiers = 0;
2923         if (mask & input->xkb.control_mask)
2924                 input->modifiers |= MOD_CONTROL_MASK;
2925         if (mask & input->xkb.alt_mask)
2926                 input->modifiers |= MOD_ALT_MASK;
2927         if (mask & input->xkb.shift_mask)
2928                 input->modifiers |= MOD_SHIFT_MASK;
2929 }
2930
2931 static void
2932 set_repeat_info(struct input *input, int32_t rate, int32_t delay)
2933 {
2934         input->repeat_rate_sec = input->repeat_rate_nsec = 0;
2935         input->repeat_delay_sec = input->repeat_delay_nsec = 0;
2936
2937         /* a rate of zero disables any repeating, regardless of the delay's
2938          * value */
2939         if (rate == 0)
2940                 return;
2941
2942         if (rate == 1)
2943                 input->repeat_rate_sec = 1;
2944         else
2945                 input->repeat_rate_nsec = 1000000000 / rate;
2946
2947         input->repeat_delay_sec = delay / 1000;
2948         delay -= (input->repeat_delay_sec * 1000);
2949         input->repeat_delay_nsec = delay * 1000 * 1000;
2950 }
2951
2952 static void
2953 keyboard_handle_repeat_info(void *data, struct wl_keyboard *keyboard,
2954                             int32_t rate, int32_t delay)
2955 {
2956         struct input *input = data;
2957
2958         set_repeat_info(input, rate, delay);
2959 }
2960
2961 static const struct wl_keyboard_listener keyboard_listener = {
2962         keyboard_handle_keymap,
2963         keyboard_handle_enter,
2964         keyboard_handle_leave,
2965         keyboard_handle_key,
2966         keyboard_handle_modifiers,
2967         keyboard_handle_repeat_info
2968
2969 };
2970
2971 static void
2972 touch_handle_down(void *data, struct wl_touch *wl_touch,
2973                   uint32_t serial, uint32_t time, struct wl_surface *surface,
2974                   int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
2975 {
2976         struct input *input = data;
2977         struct widget *widget;
2978         float sx = wl_fixed_to_double(x_w);
2979         float sy = wl_fixed_to_double(y_w);
2980
2981         input->display->serial = serial;
2982         input->touch_focus = wl_surface_get_user_data(surface);
2983         if (!input->touch_focus) {
2984                 DBG("Failed to find to touch focus for surface %p\n", surface);
2985                 return;
2986         }
2987
2988         if (surface != input->touch_focus->main_surface->surface) {
2989                 DBG("Ignoring input event from subsurface %p\n", surface);
2990                 input->touch_focus = NULL;
2991                 return;
2992         }
2993
2994         if (input->grab)
2995                 widget = input->grab;
2996         else
2997                 widget = window_find_widget(input->touch_focus,
2998                                             wl_fixed_to_double(x_w),
2999                                             wl_fixed_to_double(y_w));
3000         if (widget) {
3001                 struct touch_point *tp = xmalloc(sizeof *tp);
3002                 if (tp) {
3003                         tp->id = id;
3004                         tp->widget = widget;
3005                         tp->x = sx;
3006                         tp->y = sy;
3007                         wl_list_insert(&input->touch_point_list, &tp->link);
3008
3009                         if (widget->touch_down_handler)
3010                                 (*widget->touch_down_handler)(widget, input,
3011                                                               serial, time, id,
3012                                                               sx, sy,
3013                                                               widget->user_data);
3014                 }
3015         }
3016 }
3017
3018 static void
3019 touch_handle_up(void *data, struct wl_touch *wl_touch,
3020                 uint32_t serial, uint32_t time, int32_t id)
3021 {
3022         struct input *input = data;
3023         struct touch_point *tp, *tmp;
3024
3025         if (!input->touch_focus) {
3026                 DBG("No touch focus found for touch up event!\n");
3027                 return;
3028         }
3029
3030         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3031                 if (tp->id != id)
3032                         continue;
3033
3034                 if (tp->widget->touch_up_handler)
3035                         (*tp->widget->touch_up_handler)(tp->widget, input, serial,
3036                                                         time, id,
3037                                                         tp->widget->user_data);
3038
3039                 wl_list_remove(&tp->link);
3040                 free(tp);
3041
3042                 return;
3043         }
3044 }
3045
3046 static void
3047 touch_handle_motion(void *data, struct wl_touch *wl_touch,
3048                     uint32_t time, int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
3049 {
3050         struct input *input = data;
3051         struct touch_point *tp;
3052         float sx = wl_fixed_to_double(x_w);
3053         float sy = wl_fixed_to_double(y_w);
3054
3055         DBG("touch_handle_motion: %i %i\n", id, wl_list_length(&input->touch_point_list));
3056
3057         if (!input->touch_focus) {
3058                 DBG("No touch focus found for touch motion event!\n");
3059                 return;
3060         }
3061
3062         wl_list_for_each(tp, &input->touch_point_list, link) {
3063                 if (tp->id != id)
3064                         continue;
3065
3066                 tp->x = sx;
3067                 tp->y = sy;
3068                 if (tp->widget->touch_motion_handler)
3069                         (*tp->widget->touch_motion_handler)(tp->widget, input, time,
3070                                                             id, sx, sy,
3071                                                             tp->widget->user_data);
3072                 return;
3073         }
3074 }
3075
3076 static void
3077 touch_handle_frame(void *data, struct wl_touch *wl_touch)
3078 {
3079         struct input *input = data;
3080         struct touch_point *tp, *tmp;
3081
3082         DBG("touch_handle_frame\n");
3083
3084         if (!input->touch_focus) {
3085                 DBG("No touch focus found for touch frame event!\n");
3086                 return;
3087         }
3088
3089         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3090                 if (tp->widget->touch_frame_handler)
3091                         (*tp->widget->touch_frame_handler)(tp->widget, input,
3092                                                            tp->widget->user_data);
3093         }
3094 }
3095
3096 static void
3097 touch_handle_cancel(void *data, struct wl_touch *wl_touch)
3098 {
3099         struct input *input = data;
3100         struct touch_point *tp, *tmp;
3101
3102         DBG("touch_handle_cancel\n");
3103
3104         if (!input->touch_focus) {
3105                 DBG("No touch focus found for touch cancel event!\n");
3106                 return;
3107         }
3108
3109         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3110                 if (tp->widget->touch_cancel_handler)
3111                         (*tp->widget->touch_cancel_handler)(tp->widget, input,
3112                                                             tp->widget->user_data);
3113
3114                 wl_list_remove(&tp->link);
3115                 free(tp);
3116         }
3117 }
3118
3119 static const struct wl_touch_listener touch_listener = {
3120         touch_handle_down,
3121         touch_handle_up,
3122         touch_handle_motion,
3123         touch_handle_frame,
3124         touch_handle_cancel,
3125 };
3126
3127 static void
3128 seat_handle_capabilities(void *data, struct wl_seat *seat,
3129                          enum wl_seat_capability caps)
3130 {
3131         struct input *input = data;
3132
3133         if ((caps & WL_SEAT_CAPABILITY_POINTER) && !input->pointer) {
3134                 input->pointer = wl_seat_get_pointer(seat);
3135                 wl_pointer_set_user_data(input->pointer, input);
3136                 wl_pointer_add_listener(input->pointer, &pointer_listener,
3137                                         input);
3138         } else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && input->pointer) {
3139                 wl_pointer_destroy(input->pointer);
3140                 input->pointer = NULL;
3141         }
3142
3143         if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
3144                 input->keyboard = wl_seat_get_keyboard(seat);
3145                 wl_keyboard_set_user_data(input->keyboard, input);
3146                 wl_keyboard_add_listener(input->keyboard, &keyboard_listener,
3147                                          input);
3148         } else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) {
3149                 wl_keyboard_destroy(input->keyboard);
3150                 input->keyboard = NULL;
3151         }
3152
3153         if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !input->touch) {
3154                 input->touch = wl_seat_get_touch(seat);
3155                 wl_touch_set_user_data(input->touch, input);
3156                 wl_touch_add_listener(input->touch, &touch_listener, input);
3157         } else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && input->touch) {
3158                 wl_touch_destroy(input->touch);
3159                 input->touch = NULL;
3160         }
3161 }
3162
3163 static void
3164 seat_handle_name(void *data, struct wl_seat *seat,
3165                  const char *name)
3166 {
3167
3168 }
3169
3170 static const struct wl_seat_listener seat_listener = {
3171         seat_handle_capabilities,
3172         seat_handle_name
3173 };
3174
3175 void
3176 input_get_position(struct input *input, int32_t *x, int32_t *y)
3177 {
3178         *x = input->sx;
3179         *y = input->sy;
3180 }
3181
3182 int
3183 input_get_touch(struct input *input, int32_t id, float *x, float *y)
3184 {
3185         struct touch_point *tp;
3186
3187         wl_list_for_each(tp, &input->touch_point_list, link) {
3188                 if (tp->id != id)
3189                         continue;
3190
3191                 *x = tp->x;
3192                 *y = tp->y;
3193                 return 0;
3194         }
3195
3196         return -1;
3197 }
3198
3199 struct display *
3200 input_get_display(struct input *input)
3201 {
3202         return input->display;
3203 }
3204
3205 struct wl_seat *
3206 input_get_seat(struct input *input)
3207 {
3208         return input->seat;
3209 }
3210
3211 uint32_t
3212 input_get_modifiers(struct input *input)
3213 {
3214         return input->modifiers;
3215 }
3216
3217 struct widget *
3218 input_get_focus_widget(struct input *input)
3219 {
3220         return input->focus_widget;
3221 }
3222
3223 struct data_offer {
3224         struct wl_data_offer *offer;
3225         struct input *input;
3226         struct wl_array types;
3227         int refcount;
3228
3229         struct task io_task;
3230         int fd;
3231         data_func_t func;
3232         int32_t x, y;
3233         void *user_data;
3234 };
3235
3236 static void
3237 data_offer_offer(void *data, struct wl_data_offer *wl_data_offer, const char *type)
3238 {
3239         struct data_offer *offer = data;
3240         char **p;
3241
3242         p = wl_array_add(&offer->types, sizeof *p);
3243         *p = strdup(type);
3244 }
3245
3246 static const struct wl_data_offer_listener data_offer_listener = {
3247         data_offer_offer,
3248 };
3249
3250 static void
3251 data_offer_destroy(struct data_offer *offer)
3252 {
3253         char **p;
3254
3255         offer->refcount--;
3256         if (offer->refcount == 0) {
3257                 wl_data_offer_destroy(offer->offer);
3258                 for (p = offer->types.data; *p; p++)
3259                         free(*p);
3260                 wl_array_release(&offer->types);
3261                 free(offer);
3262         }
3263 }
3264
3265 static void
3266 data_device_data_offer(void *data,
3267                        struct wl_data_device *data_device,
3268                        struct wl_data_offer *_offer)
3269 {
3270         struct data_offer *offer;
3271
3272         offer = xmalloc(sizeof *offer);
3273
3274         wl_array_init(&offer->types);
3275         offer->refcount = 1;
3276         offer->input = data;
3277         offer->offer = _offer;
3278         wl_data_offer_add_listener(offer->offer,
3279                                    &data_offer_listener, offer);
3280 }
3281
3282 static void
3283 data_device_enter(void *data, struct wl_data_device *data_device,
3284                   uint32_t serial, struct wl_surface *surface,
3285                   wl_fixed_t x_w, wl_fixed_t y_w,
3286                   struct wl_data_offer *offer)
3287 {
3288         struct input *input = data;
3289         struct window *window;
3290         void *types_data;
3291         float x = wl_fixed_to_double(x_w);
3292         float y = wl_fixed_to_double(y_w);
3293         char **p;
3294
3295         window = wl_surface_get_user_data(surface);
3296         input->drag_enter_serial = serial;
3297         input->drag_focus = window,
3298         input->drag_x = x;
3299         input->drag_y = y;
3300
3301         if (!input->touch_grab)
3302                 input->pointer_enter_serial = serial;
3303
3304         if (offer) {
3305                 input->drag_offer = wl_data_offer_get_user_data(offer);
3306
3307                 p = wl_array_add(&input->drag_offer->types, sizeof *p);
3308                 *p = NULL;
3309
3310                 types_data = input->drag_offer->types.data;
3311         } else {
3312                 input->drag_offer = NULL;
3313                 types_data = NULL;
3314         }
3315
3316         if (window->data_handler)
3317                 window->data_handler(window, input, x, y, types_data,
3318                                      window->user_data);
3319 }
3320
3321 static void
3322 data_device_leave(void *data, struct wl_data_device *data_device)
3323 {
3324         struct input *input = data;
3325
3326         if (input->drag_offer) {
3327                 data_offer_destroy(input->drag_offer);
3328                 input->drag_offer = NULL;
3329         }
3330 }
3331
3332 static void
3333 data_device_motion(void *data, struct wl_data_device *data_device,
3334                    uint32_t time, wl_fixed_t x_w, wl_fixed_t y_w)
3335 {
3336         struct input *input = data;
3337         struct window *window = input->drag_focus;
3338         float x = wl_fixed_to_double(x_w);
3339         float y = wl_fixed_to_double(y_w);
3340         void *types_data;
3341
3342         input->drag_x = x;
3343         input->drag_y = y;
3344
3345         if (input->drag_offer)
3346                 types_data = input->drag_offer->types.data;
3347         else
3348                 types_data = NULL;
3349
3350         if (window->data_handler)
3351                 window->data_handler(window, input, x, y, types_data,
3352                                      window->user_data);
3353 }
3354
3355 static void
3356 data_device_drop(void *data, struct wl_data_device *data_device)
3357 {
3358         struct input *input = data;
3359         struct window *window = input->drag_focus;
3360         float x, y;
3361
3362         x = input->drag_x;
3363         y = input->drag_y;
3364
3365         if (window->drop_handler)
3366                 window->drop_handler(window, input,
3367                                      x, y, window->user_data);
3368
3369         if (input->touch_grab)
3370                 touch_ungrab(input);
3371 }
3372
3373 static void
3374 data_device_selection(void *data,
3375                       struct wl_data_device *wl_data_device,
3376                       struct wl_data_offer *offer)
3377 {
3378         struct input *input = data;
3379         char **p;
3380
3381         if (input->selection_offer)
3382                 data_offer_destroy(input->selection_offer);
3383
3384         if (offer) {
3385                 input->selection_offer = wl_data_offer_get_user_data(offer);
3386                 p = wl_array_add(&input->selection_offer->types, sizeof *p);
3387                 *p = NULL;
3388         } else {
3389                 input->selection_offer = NULL;
3390         }
3391 }
3392
3393 static const struct wl_data_device_listener data_device_listener = {
3394         data_device_data_offer,
3395         data_device_enter,
3396         data_device_leave,
3397         data_device_motion,
3398         data_device_drop,
3399         data_device_selection
3400 };
3401
3402 static void
3403 input_set_pointer_image_index(struct input *input, int index)
3404 {
3405         struct wl_buffer *buffer;
3406         struct wl_cursor *cursor;
3407         struct wl_cursor_image *image;
3408
3409         if (!input->pointer)
3410                 return;
3411
3412         cursor = input->display->cursors[input->current_cursor];
3413         if (!cursor)
3414                 return;
3415
3416         if (index >= (int) cursor->image_count) {
3417                 fprintf(stderr, "cursor index out of range\n");
3418                 return;
3419         }
3420
3421         image = cursor->images[index];
3422         buffer = wl_cursor_image_get_buffer(image);
3423         if (!buffer)
3424                 return;
3425
3426         wl_surface_attach(input->pointer_surface, buffer, 0, 0);
3427         wl_surface_damage(input->pointer_surface, 0, 0,
3428                           image->width, image->height);
3429         wl_surface_commit(input->pointer_surface);
3430         wl_pointer_set_cursor(input->pointer, input->pointer_enter_serial,
3431                               input->pointer_surface,
3432                               image->hotspot_x, image->hotspot_y);
3433 }
3434
3435 static const struct wl_callback_listener pointer_surface_listener;
3436
3437 static void
3438 pointer_surface_frame_callback(void *data, struct wl_callback *callback,
3439                                uint32_t time)
3440 {
3441         struct input *input = data;
3442         struct wl_cursor *cursor;
3443         int i;
3444
3445         if (callback) {
3446                 assert(callback == input->cursor_frame_cb);
3447                 wl_callback_destroy(callback);
3448                 input->cursor_frame_cb = NULL;
3449         }
3450
3451         if (!input->pointer)
3452                 return;
3453
3454         if (input->current_cursor == CURSOR_BLANK) {
3455                 wl_pointer_set_cursor(input->pointer,
3456                                       input->pointer_enter_serial,
3457                                       NULL, 0, 0);
3458                 return;
3459         }
3460
3461         if (input->current_cursor == CURSOR_UNSET)
3462                 return;
3463         cursor = input->display->cursors[input->current_cursor];
3464         if (!cursor)
3465                 return;
3466
3467         /* FIXME We don't have the current time on the first call so we set
3468          * the animation start to the time of the first frame callback. */
3469         if (time == 0)
3470                 input->cursor_anim_start = 0;
3471         else if (input->cursor_anim_start == 0)
3472                 input->cursor_anim_start = time;
3473
3474         if (time == 0 || input->cursor_anim_start == 0)
3475                 i = 0;
3476         else
3477                 i = wl_cursor_frame(cursor, time - input->cursor_anim_start);
3478
3479         if (cursor->image_count > 1) {
3480                 input->cursor_frame_cb =
3481                         wl_surface_frame(input->pointer_surface);
3482                 wl_callback_add_listener(input->cursor_frame_cb,
3483                                          &pointer_surface_listener, input);
3484         }
3485
3486         input_set_pointer_image_index(input, i);
3487 }
3488
3489 static const struct wl_callback_listener pointer_surface_listener = {
3490         pointer_surface_frame_callback
3491 };
3492
3493 void
3494 input_set_pointer_image(struct input *input, int pointer)
3495 {
3496         int force = 0;
3497
3498         if (!input->pointer)
3499                 return;
3500
3501         if (input->pointer_enter_serial > input->cursor_serial)
3502                 force = 1;
3503
3504         if (!force && pointer == input->current_cursor)
3505                 return;
3506
3507         input->current_cursor = pointer;
3508         input->cursor_serial = input->pointer_enter_serial;
3509         if (!input->cursor_frame_cb)
3510                 pointer_surface_frame_callback(input, NULL, 0);
3511         else if (force) {
3512                 /* The current frame callback may be stuck if, for instance,
3513                  * the set cursor request was processed by the server after
3514                  * this client lost the focus. In this case the cursor surface
3515                  * might not be mapped and the frame callback wouldn't ever
3516                  * complete. Send a set_cursor and attach to try to map the
3517                  * cursor surface again so that the callback will finish */
3518                 input_set_pointer_image_index(input, 0);
3519         }
3520 }
3521
3522 struct wl_data_device *
3523 input_get_data_device(struct input *input)
3524 {
3525         return input->data_device;
3526 }
3527
3528 void
3529 input_set_selection(struct input *input,
3530                     struct wl_data_source *source, uint32_t time)
3531 {
3532         if (input->data_device)
3533                 wl_data_device_set_selection(input->data_device, source, time);
3534 }
3535
3536 void
3537 input_accept(struct input *input, const char *type)
3538 {
3539         wl_data_offer_accept(input->drag_offer->offer,
3540                              input->drag_enter_serial, type);
3541 }
3542
3543 static void
3544 offer_io_func(struct task *task, uint32_t events)
3545 {
3546         struct data_offer *offer =
3547                 container_of(task, struct data_offer, io_task);
3548         unsigned int len;
3549         char buffer[4096];
3550
3551         len = read(offer->fd, buffer, sizeof buffer);
3552         offer->func(buffer, len,
3553                     offer->x, offer->y, offer->user_data);
3554
3555         if (len == 0) {
3556                 close(offer->fd);
3557                 data_offer_destroy(offer);
3558         }
3559 }
3560
3561 static void
3562 data_offer_receive_data(struct data_offer *offer, const char *mime_type,
3563                         data_func_t func, void *user_data)
3564 {
3565         int p[2];
3566
3567         if (pipe2(p, O_CLOEXEC) == -1)
3568                 return;
3569
3570         wl_data_offer_receive(offer->offer, mime_type, p[1]);
3571         close(p[1]);
3572
3573         offer->io_task.run = offer_io_func;
3574         offer->fd = p[0];
3575         offer->func = func;
3576         offer->refcount++;
3577         offer->user_data = user_data;
3578
3579         display_watch_fd(offer->input->display,
3580                          offer->fd, EPOLLIN, &offer->io_task);
3581 }
3582
3583 void
3584 input_receive_drag_data(struct input *input, const char *mime_type,
3585                         data_func_t func, void *data)
3586 {
3587         data_offer_receive_data(input->drag_offer, mime_type, func, data);
3588         input->drag_offer->x = input->drag_x;
3589         input->drag_offer->y = input->drag_y;
3590 }
3591
3592 int
3593 input_receive_drag_data_to_fd(struct input *input,
3594                               const char *mime_type, int fd)
3595 {
3596         if (input->drag_offer)
3597                 wl_data_offer_receive(input->drag_offer->offer, mime_type, fd);
3598
3599         return 0;
3600 }
3601
3602 int
3603 input_receive_selection_data(struct input *input, const char *mime_type,
3604                              data_func_t func, void *data)
3605 {
3606         char **p;
3607
3608         if (input->selection_offer == NULL)
3609                 return -1;
3610
3611         for (p = input->selection_offer->types.data; *p; p++)
3612                 if (strcmp(mime_type, *p) == 0)
3613                         break;
3614
3615         if (*p == NULL)
3616                 return -1;
3617
3618         data_offer_receive_data(input->selection_offer,
3619                                 mime_type, func, data);
3620         return 0;
3621 }
3622
3623 int
3624 input_receive_selection_data_to_fd(struct input *input,
3625                                    const char *mime_type, int fd)
3626 {
3627         if (input->selection_offer)
3628                 wl_data_offer_receive(input->selection_offer->offer,
3629                                       mime_type, fd);
3630
3631         return 0;
3632 }
3633
3634 void
3635 window_move(struct window *window, struct input *input, uint32_t serial)
3636 {
3637         if (!window->xdg_surface)
3638                 return;
3639
3640         xdg_surface_move(window->xdg_surface, input->seat, serial);
3641 }
3642
3643 static void
3644 surface_set_synchronized(struct surface *surface)
3645 {
3646         if (!surface->subsurface)
3647                 return;
3648
3649         if (surface->synchronized)
3650                 return;
3651
3652         wl_subsurface_set_sync(surface->subsurface);
3653         surface->synchronized = 1;
3654 }
3655
3656 static void
3657 surface_set_synchronized_default(struct surface *surface)
3658 {
3659         if (!surface->subsurface)
3660                 return;
3661
3662         if (surface->synchronized == surface->synchronized_default)
3663                 return;
3664
3665         if (surface->synchronized_default)
3666                 wl_subsurface_set_sync(surface->subsurface);
3667         else
3668                 wl_subsurface_set_desync(surface->subsurface);
3669
3670         surface->synchronized = surface->synchronized_default;
3671 }
3672
3673 static void
3674 surface_resize(struct surface *surface)
3675 {
3676         struct widget *widget = surface->widget;
3677         struct wl_compositor *compositor = widget->window->display->compositor;
3678
3679         if (surface->input_region) {
3680                 wl_region_destroy(surface->input_region);
3681                 surface->input_region = NULL;
3682         }
3683
3684         if (surface->opaque_region)
3685                 wl_region_destroy(surface->opaque_region);
3686
3687         surface->opaque_region = wl_compositor_create_region(compositor);
3688
3689         if (widget->resize_handler)
3690                 widget->resize_handler(widget,
3691                                        widget->allocation.width,
3692                                        widget->allocation.height,
3693                                        widget->user_data);
3694
3695         if (surface->subsurface &&
3696             (surface->allocation.x != widget->allocation.x ||
3697              surface->allocation.y != widget->allocation.y)) {
3698                 wl_subsurface_set_position(surface->subsurface,
3699                                            widget->allocation.x,
3700                                            widget->allocation.y);
3701         }
3702         if (surface->allocation.width != widget->allocation.width ||
3703             surface->allocation.height != widget->allocation.height) {
3704                 window_schedule_redraw(widget->window);
3705         }
3706         surface->allocation = widget->allocation;
3707
3708         if (widget->opaque)
3709                 wl_region_add(surface->opaque_region, 0, 0,
3710                               widget->allocation.width,
3711                               widget->allocation.height);
3712 }
3713
3714 static void
3715 hack_prevent_EGL_sub_surface_deadlock(struct window *window)
3716 {
3717         /*
3718          * This hack should be removed, when EGL respects
3719          * eglSwapInterval(0).
3720          *
3721          * If this window has sub-surfaces, especially a free-running
3722          * EGL-widget, we need to post the parent surface once with
3723          * all the old state to guarantee, that the EGL-widget will
3724          * receive its frame callback soon. Otherwise, a forced call
3725          * to eglSwapBuffers may end up blocking, waiting for a frame
3726          * event that will never come, because we will commit the parent
3727          * surface with all new state only after eglSwapBuffers returns.
3728          *
3729          * This assumes, that:
3730          * 1. When the EGL widget's resize hook is called, it pauses.
3731          * 2. When the EGL widget's redraw hook is called, it forces a
3732          *    repaint and a call to eglSwapBuffers(), and maybe resumes.
3733          * In a single threaded application condition 1 is a no-op.
3734          *
3735          * XXX: This should actually be after the surface_resize() calls,
3736          * but cannot, because then it would commit the incomplete state
3737          * accumulated from the widget resize hooks.
3738          */
3739         if (window->subsurface_list.next != &window->main_surface->link ||
3740             window->subsurface_list.prev != &window->main_surface->link)
3741                 wl_surface_commit(window->main_surface->surface);
3742 }
3743
3744 static void
3745 window_do_resize(struct window *window)
3746 {
3747         struct surface *surface;
3748
3749         widget_set_allocation(window->main_surface->widget,
3750                               window->pending_allocation.x,
3751                               window->pending_allocation.y,
3752                               window->pending_allocation.width,
3753                               window->pending_allocation.height);
3754
3755         surface_resize(window->main_surface);
3756
3757         /* The main surface is in the list, too. Main surface's
3758          * resize_handler is responsible for calling widget_set_allocation()
3759          * on all sub-surface root widgets, so they will be resized
3760          * properly.
3761          */
3762         wl_list_for_each(surface, &window->subsurface_list, link) {
3763                 if (surface == window->main_surface)
3764                         continue;
3765
3766                 surface_set_synchronized(surface);
3767                 surface_resize(surface);
3768         }
3769
3770         if (!window->fullscreen && !window->maximized)
3771                 window->saved_allocation = window->pending_allocation;
3772 }
3773
3774 static void
3775 idle_resize(struct window *window)
3776 {
3777         window->resize_needed = 0;
3778         window->redraw_needed = 1;
3779
3780         DBG("from %dx%d to %dx%d\n",
3781             window->main_surface->server_allocation.width,
3782             window->main_surface->server_allocation.height,
3783             window->pending_allocation.width,
3784             window->pending_allocation.height);
3785
3786         hack_prevent_EGL_sub_surface_deadlock(window);
3787
3788         window_do_resize(window);
3789 }
3790
3791 static void
3792 undo_resize(struct window *window)
3793 {
3794         window->pending_allocation.width =
3795                 window->main_surface->server_allocation.width;
3796         window->pending_allocation.height =
3797                 window->main_surface->server_allocation.height;
3798
3799         DBG("back to %dx%d\n",
3800             window->main_surface->server_allocation.width,
3801             window->main_surface->server_allocation.height);
3802
3803         window_do_resize(window);
3804
3805         if (window->pending_allocation.width == 0 &&
3806             window->pending_allocation.height == 0) {
3807                 fprintf(stderr, "Error: Could not draw a surface, "
3808                         "most likely due to insufficient disk space in "
3809                         "%s (XDG_RUNTIME_DIR).\n", getenv("XDG_RUNTIME_DIR"));
3810                 exit(EXIT_FAILURE);
3811         }
3812 }
3813
3814 void
3815 window_schedule_resize(struct window *window, int width, int height)
3816 {
3817         /* We should probably get these numbers from the theme. */
3818         const int min_width = 200, min_height = 200;
3819
3820         window->pending_allocation.x = 0;
3821         window->pending_allocation.y = 0;
3822         window->pending_allocation.width = width;
3823         window->pending_allocation.height = height;
3824
3825         if (window->min_allocation.width == 0) {
3826                 if (width < min_width && window->frame)
3827                         window->min_allocation.width = min_width;
3828                 else
3829                         window->min_allocation.width = width;
3830                 if (height < min_height && window->frame)
3831                         window->min_allocation.height = min_height;
3832                 else
3833                         window->min_allocation.height = height;
3834         }
3835
3836         if (window->pending_allocation.width < window->min_allocation.width)
3837                 window->pending_allocation.width = window->min_allocation.width;
3838         if (window->pending_allocation.height < window->min_allocation.height)
3839                 window->pending_allocation.height = window->min_allocation.height;
3840
3841         window->resize_needed = 1;
3842         window_schedule_redraw(window);
3843 }
3844
3845 void
3846 widget_schedule_resize(struct widget *widget, int32_t width, int32_t height)
3847 {
3848         window_schedule_resize(widget->window, width, height);
3849 }
3850
3851 static int
3852 window_get_shadow_margin(struct window *window)
3853 {
3854         if (window->frame && !window->fullscreen)
3855                 return frame_get_shadow_margin(window->frame->frame);
3856         else
3857                 return 0;
3858 }
3859
3860 static void
3861 handle_surface_configure(void *data, struct xdg_surface *xdg_surface,
3862                          int32_t width, int32_t height,
3863                          struct wl_array *states, uint32_t serial)
3864 {
3865         struct window *window = data;
3866         uint32_t *p;
3867
3868         window->maximized = 0;
3869         window->fullscreen = 0;
3870         window->resizing = 0;
3871         window->focused = 0;
3872
3873         wl_array_for_each(p, states) {
3874                 uint32_t state = *p;
3875                 switch (state) {
3876                 case XDG_SURFACE_STATE_MAXIMIZED:
3877                         window->maximized = 1;
3878                         break;
3879                 case XDG_SURFACE_STATE_FULLSCREEN:
3880                         window->fullscreen = 1;
3881                         break;
3882                 case XDG_SURFACE_STATE_RESIZING:
3883                         window->resizing = 1;
3884                         break;
3885                 case XDG_SURFACE_STATE_ACTIVATED:
3886                         window->focused = 1;
3887                         break;
3888                 default:
3889                         /* Unknown state */
3890                         break;
3891                 }
3892         }
3893
3894         if (window->frame) {
3895                 if (window->maximized) {
3896                         frame_set_flag(window->frame->frame, FRAME_FLAG_MAXIMIZED);
3897                 } else {
3898                         frame_unset_flag(window->frame->frame, FRAME_FLAG_MAXIMIZED);
3899                 }
3900
3901                 if (window->focused) {
3902                         frame_set_flag(window->frame->frame, FRAME_FLAG_ACTIVE);
3903                 } else {
3904                         frame_unset_flag(window->frame->frame, FRAME_FLAG_ACTIVE);
3905                 }
3906         }
3907
3908         if (width > 0 && height > 0) {
3909                 /* The width / height params are for window geometry,
3910                  * but window_schedule_resize takes allocation. Add
3911                  * on the shadow margin to get the difference. */
3912                 int margin = window_get_shadow_margin(window);
3913
3914                 window_schedule_resize(window,
3915                                        width + margin * 2,
3916                                        height + margin * 2);
3917         } else {
3918                 window_schedule_resize(window,
3919                                        window->saved_allocation.width,
3920                                        window->saved_allocation.height);
3921         }
3922
3923         xdg_surface_ack_configure(window->xdg_surface, serial);
3924
3925         if (window->state_changed_handler)
3926                 window->state_changed_handler(window, window->user_data);
3927 }
3928
3929 static void
3930 handle_surface_delete(void *data, struct xdg_surface *xdg_surface)
3931 {
3932         struct window *window = data;
3933         window_close(window);
3934 }
3935
3936 static const struct xdg_surface_listener xdg_surface_listener = {
3937         handle_surface_configure,
3938         handle_surface_delete,
3939 };
3940
3941 static void
3942 window_sync_parent(struct window *window)
3943 {
3944         struct wl_surface *parent_surface;
3945
3946         if (!window->xdg_surface)
3947                 return;
3948
3949         if (window->parent)
3950                 parent_surface = window->parent->main_surface->surface;
3951         else
3952                 parent_surface = NULL;
3953
3954         xdg_surface_set_parent(window->xdg_surface, parent_surface);
3955 }
3956
3957 static void
3958 window_get_geometry(struct window *window, struct rectangle *geometry)
3959 {
3960         if (window->frame && !window->fullscreen)
3961                 frame_input_rect(window->frame->frame,
3962                                  &geometry->x,
3963                                  &geometry->y,
3964                                  &geometry->width,
3965                                  &geometry->height);
3966         else
3967                 window_get_allocation(window, geometry);
3968 }
3969
3970 static void
3971 window_sync_geometry(struct window *window)
3972 {
3973         struct rectangle geometry;
3974
3975         if (!window->xdg_surface)
3976                 return;
3977
3978         window_get_geometry(window, &geometry);
3979
3980         xdg_surface_set_window_geometry(window->xdg_surface,
3981                                         geometry.x,
3982                                         geometry.y,
3983                                         geometry.width,
3984                                         geometry.height);
3985 }
3986
3987 static void
3988 window_flush(struct window *window)
3989 {
3990         struct surface *surface;
3991
3992         if (!window->custom) {
3993                 if (window->xdg_surface) {
3994                         window_sync_parent(window);
3995                         window_sync_geometry(window);
3996                 }
3997         }
3998
3999         wl_list_for_each(surface, &window->subsurface_list, link) {
4000                 if (surface == window->main_surface)
4001                         continue;
4002
4003                 surface_flush(surface);
4004         }
4005
4006         surface_flush(window->main_surface);
4007 }
4008
4009 static void
4010 menu_destroy(struct menu *menu)
4011 {
4012         widget_destroy(menu->widget);
4013         window_destroy(menu->window);
4014         frame_destroy(menu->frame);
4015         free(menu);
4016 }
4017
4018 void
4019 window_get_allocation(struct window *window,
4020                       struct rectangle *allocation)
4021 {
4022         *allocation = window->main_surface->allocation;
4023 }
4024
4025 static void
4026 widget_redraw(struct widget *widget)
4027 {
4028         struct widget *child;
4029
4030         if (widget->redraw_handler)
4031                 widget->redraw_handler(widget, widget->user_data);
4032         wl_list_for_each(child, &widget->child_list, link)
4033                 widget_redraw(child);
4034 }
4035
4036 static void
4037 frame_callback(void *data, struct wl_callback *callback, uint32_t time)
4038 {
4039         struct surface *surface = data;
4040
4041         assert(callback == surface->frame_cb);
4042         DBG_OBJ(callback, "done\n");
4043         wl_callback_destroy(callback);
4044         surface->frame_cb = NULL;
4045
4046         surface->last_time = time;
4047
4048         if (surface->redraw_needed || surface->window->redraw_needed) {
4049                 DBG_OBJ(surface->surface, "window_schedule_redraw_task\n");
4050                 window_schedule_redraw_task(surface->window);
4051         }
4052 }
4053
4054 static const struct wl_callback_listener listener = {
4055         frame_callback
4056 };
4057
4058 static int
4059 surface_redraw(struct surface *surface)
4060 {
4061         DBG_OBJ(surface->surface, "begin\n");
4062
4063         if (!surface->window->redraw_needed && !surface->redraw_needed)
4064                 return 0;
4065
4066         /* Whole-window redraw forces a redraw even if the previous has
4067          * not yet hit the screen.
4068          */
4069         if (surface->frame_cb) {
4070                 if (!surface->window->redraw_needed)
4071                         return 0;
4072
4073                 DBG_OBJ(surface->frame_cb, "cancelled\n");
4074                 wl_callback_destroy(surface->frame_cb);
4075         }
4076
4077         if (surface->widget->use_cairo &&
4078             !widget_get_cairo_surface(surface->widget)) {
4079                 DBG_OBJ(surface->surface, "cancelled due buffer failure\n");
4080                 return -1;
4081         }
4082
4083         surface->frame_cb = wl_surface_frame(surface->surface);
4084         wl_callback_add_listener(surface->frame_cb, &listener, surface);
4085         DBG_OBJ(surface->frame_cb, "new\n");
4086
4087         surface->redraw_needed = 0;
4088         DBG_OBJ(surface->surface, "-> widget_redraw\n");
4089         widget_redraw(surface->widget);
4090         DBG_OBJ(surface->surface, "done\n");
4091         return 0;
4092 }
4093
4094 static void
4095 idle_redraw(struct task *task, uint32_t events)
4096 {
4097         struct window *window = container_of(task, struct window, redraw_task);
4098         struct surface *surface;
4099         int failed = 0;
4100         int resized = 0;
4101
4102         DBG(" --------- \n");
4103
4104         wl_list_init(&window->redraw_task.link);
4105         window->redraw_task_scheduled = 0;
4106
4107         if (window->resize_needed) {
4108                 /* throttle resizing to the main surface display */
4109                 if (window->main_surface->frame_cb) {
4110                         DBG_OBJ(window->main_surface->frame_cb, "pending\n");
4111                         return;
4112                 }
4113
4114                 idle_resize(window);
4115                 resized = 1;
4116         }
4117
4118         if (surface_redraw(window->main_surface) < 0) {
4119                 /*
4120                  * Only main_surface failure will cause us to undo the resize.
4121                  * If sub-surfaces fail, they will just be broken with old
4122                  * content.
4123                  */
4124                 failed = 1;
4125         } else {
4126                 wl_list_for_each(surface, &window->subsurface_list, link) {
4127                         if (surface == window->main_surface)
4128                                 continue;
4129
4130                         surface_redraw(surface);
4131                 }
4132         }
4133
4134         window->redraw_needed = 0;
4135         window_flush(window);
4136
4137         wl_list_for_each(surface, &window->subsurface_list, link)
4138                 surface_set_synchronized_default(surface);
4139
4140         if (resized && failed) {
4141                 /* Restore widget tree to correspond to what is on screen. */
4142                 undo_resize(window);
4143         }
4144 }
4145
4146 static void
4147 window_schedule_redraw_task(struct window *window)
4148 {
4149         if (!window->redraw_task_scheduled) {
4150                 window->redraw_task.run = idle_redraw;
4151                 display_defer(window->display, &window->redraw_task);
4152                 window->redraw_task_scheduled = 1;
4153         }
4154 }
4155
4156 void
4157 window_schedule_redraw(struct window *window)
4158 {
4159         struct surface *surface;
4160
4161         DBG_OBJ(window->main_surface->surface, "window %p\n", window);
4162
4163         wl_list_for_each(surface, &window->subsurface_list, link)
4164                 surface->redraw_needed = 1;
4165
4166         window_schedule_redraw_task(window);
4167 }
4168
4169 int
4170 window_is_fullscreen(struct window *window)
4171 {
4172         return window->fullscreen;
4173 }
4174
4175 void
4176 window_set_fullscreen(struct window *window, int fullscreen)
4177 {
4178         if (!window->xdg_surface)
4179                 return;
4180
4181         if (window->fullscreen == fullscreen)
4182                 return;
4183
4184         if (fullscreen)
4185                 xdg_surface_set_fullscreen(window->xdg_surface, NULL);
4186         else
4187                 xdg_surface_unset_fullscreen(window->xdg_surface);
4188 }
4189
4190 int
4191 window_is_maximized(struct window *window)
4192 {
4193         return window->maximized;
4194 }
4195
4196 void
4197 window_set_maximized(struct window *window, int maximized)
4198 {
4199         if (!window->xdg_surface)
4200                 return;
4201
4202         if (window->maximized == maximized)
4203                 return;
4204
4205         if (maximized)
4206                 xdg_surface_set_maximized(window->xdg_surface);
4207         else
4208                 xdg_surface_unset_maximized(window->xdg_surface);
4209 }
4210
4211 int
4212 window_is_resizing(struct window *window)
4213 {
4214         return window->resizing;
4215 }
4216
4217 void
4218 window_set_minimized(struct window *window)
4219 {
4220         if (!window->xdg_surface)
4221                 return;
4222
4223         xdg_surface_set_minimized(window->xdg_surface);
4224 }
4225
4226 void
4227 window_set_user_data(struct window *window, void *data)
4228 {
4229         window->user_data = data;
4230 }
4231
4232 void *
4233 window_get_user_data(struct window *window)
4234 {
4235         return window->user_data;
4236 }
4237
4238 void
4239 window_set_key_handler(struct window *window,
4240                        window_key_handler_t handler)
4241 {
4242         window->key_handler = handler;
4243 }
4244
4245 void
4246 window_set_keyboard_focus_handler(struct window *window,
4247                                   window_keyboard_focus_handler_t handler)
4248 {
4249         window->keyboard_focus_handler = handler;
4250 }
4251
4252 void
4253 window_set_data_handler(struct window *window, window_data_handler_t handler)
4254 {
4255         window->data_handler = handler;
4256 }
4257
4258 void
4259 window_set_drop_handler(struct window *window, window_drop_handler_t handler)
4260 {
4261         window->drop_handler = handler;
4262 }
4263
4264 void
4265 window_set_close_handler(struct window *window,
4266                          window_close_handler_t handler)
4267 {
4268         window->close_handler = handler;
4269 }
4270
4271 void
4272 window_set_fullscreen_handler(struct window *window,
4273                               window_fullscreen_handler_t handler)
4274 {
4275         window->fullscreen_handler = handler;
4276 }
4277
4278 void
4279 window_set_output_handler(struct window *window,
4280                           window_output_handler_t handler)
4281 {
4282         window->output_handler = handler;
4283 }
4284
4285 void
4286 window_set_state_changed_handler(struct window *window,
4287                                  window_state_changed_handler_t handler)
4288 {
4289         window->state_changed_handler = handler;
4290 }
4291
4292 void
4293 window_set_title(struct window *window, const char *title)
4294 {
4295         free(window->title);
4296         window->title = strdup(title);
4297         if (window->frame) {
4298                 frame_set_title(window->frame->frame, title);
4299                 widget_schedule_redraw(window->frame->widget);
4300         }
4301         if (window->xdg_surface)
4302                 xdg_surface_set_title(window->xdg_surface, title);
4303 }
4304
4305 const char *
4306 window_get_title(struct window *window)
4307 {
4308         return window->title;
4309 }
4310
4311 void
4312 window_set_text_cursor_position(struct window *window, int32_t x, int32_t y)
4313 {
4314         struct text_cursor_position *text_cursor_position =
4315                                         window->display->text_cursor_position;
4316
4317         if (!text_cursor_position)
4318                 return;
4319
4320         text_cursor_position_notify(text_cursor_position,
4321                                     window->main_surface->surface,
4322                                     wl_fixed_from_int(x),
4323                                     wl_fixed_from_int(y));
4324 }
4325
4326 void
4327 window_damage(struct window *window, int32_t x, int32_t y,
4328               int32_t width, int32_t height)
4329 {
4330         wl_surface_damage(window->main_surface->surface, x, y, width, height);
4331 }
4332
4333 static void
4334 surface_enter(void *data,
4335               struct wl_surface *wl_surface, struct wl_output *wl_output)
4336 {
4337         struct window *window = data;
4338         struct output *output;
4339         struct output *output_found = NULL;
4340         struct window_output *window_output;
4341
4342         wl_list_for_each(output, &window->display->output_list, link) {
4343                 if (output->output == wl_output) {
4344                         output_found = output;
4345                         break;
4346                 }
4347         }
4348
4349         if (!output_found)
4350                 return;
4351
4352         window_output = xmalloc(sizeof *window_output);
4353         window_output->output = output_found;
4354
4355         wl_list_insert (&window->window_output_list, &window_output->link);
4356
4357         if (window->output_handler)
4358                 window->output_handler(window, output_found, 1,
4359                                        window->user_data);
4360 }
4361
4362 static void
4363 surface_leave(void *data,
4364               struct wl_surface *wl_surface, struct wl_output *output)
4365 {
4366         struct window *window = data;
4367         struct window_output *window_output;
4368         struct window_output *window_output_found = NULL;
4369
4370         wl_list_for_each(window_output, &window->window_output_list, link) {
4371                 if (window_output->output->output == output) {
4372                         window_output_found = window_output;
4373                         break;
4374                 }
4375         }
4376
4377         if (window_output_found) {
4378                 wl_list_remove(&window_output_found->link);
4379
4380                 if (window->output_handler)
4381                         window->output_handler(window, window_output->output,
4382                                                0, window->user_data);
4383
4384                 free(window_output_found);
4385         }
4386 }
4387
4388 static const struct wl_surface_listener surface_listener = {
4389         surface_enter,
4390         surface_leave
4391 };
4392
4393 static struct surface *
4394 surface_create(struct window *window)
4395 {
4396         struct display *display = window->display;
4397         struct surface *surface;
4398
4399         surface = xmalloc(sizeof *surface);
4400         memset(surface, 0, sizeof *surface);
4401         if (!surface)
4402                 return NULL;
4403
4404         surface->window = window;
4405         surface->surface = wl_compositor_create_surface(display->compositor);
4406         surface->buffer_scale = 1;
4407         wl_surface_add_listener(surface->surface, &surface_listener, window);
4408
4409         wl_list_insert(&window->subsurface_list, &surface->link);
4410
4411         return surface;
4412 }
4413
4414 static enum window_buffer_type
4415 get_preferred_buffer_type(struct display *display)
4416 {
4417 #ifdef HAVE_CAIRO_EGL
4418         if (display->argb_device && !getenv("TOYTOOLKIT_NO_EGL"))
4419                 return WINDOW_BUFFER_TYPE_EGL_WINDOW;
4420 #endif
4421
4422         return WINDOW_BUFFER_TYPE_SHM;
4423 }
4424
4425 static struct window *
4426 window_create_internal(struct display *display, int custom)
4427 {
4428         struct window *window;
4429         struct surface *surface;
4430
4431         window = xzalloc(sizeof *window);
4432         wl_list_init(&window->subsurface_list);
4433         window->display = display;
4434
4435         surface = surface_create(window);
4436         window->main_surface = surface;
4437
4438         assert(custom || display->xdg_shell);
4439
4440         window->custom = custom;
4441         window->preferred_format = WINDOW_PREFERRED_FORMAT_NONE;
4442
4443         surface->buffer_type = get_preferred_buffer_type(display);
4444
4445         wl_surface_set_user_data(surface->surface, window);
4446         wl_list_insert(display->window_list.prev, &window->link);
4447         wl_list_init(&window->redraw_task.link);
4448
4449         wl_list_init (&window->window_output_list);
4450
4451         return window;
4452 }
4453
4454 struct window *
4455 window_create(struct display *display)
4456 {
4457         struct window *window;
4458
4459         window = window_create_internal(display, 0);
4460
4461         window->xdg_surface =
4462                 xdg_shell_get_xdg_surface(window->display->xdg_shell,
4463                                           window->main_surface->surface);
4464         fail_on_null(window->xdg_surface);
4465
4466         xdg_surface_set_user_data(window->xdg_surface, window);
4467         xdg_surface_add_listener(window->xdg_surface,
4468                                  &xdg_surface_listener, window);
4469
4470         return window;
4471 }
4472
4473 struct window *
4474 window_create_custom(struct display *display)
4475 {
4476         return window_create_internal(display, 1);
4477 }
4478
4479 void
4480 window_set_parent(struct window *window,
4481                   struct window *parent_window)
4482 {
4483         window->parent = parent_window;
4484         window_sync_parent(window);
4485 }
4486
4487 struct window *
4488 window_get_parent(struct window *window)
4489 {
4490         return window->parent;
4491 }
4492
4493 static void
4494 menu_set_item(struct menu *menu, int sy)
4495 {
4496         int32_t x, y, width, height;
4497         int next;
4498
4499         frame_interior(menu->frame, &x, &y, &width, &height);
4500         next = (sy - y) / 20;
4501         if (menu->current != next) {
4502                 menu->current = next;
4503                 widget_schedule_redraw(menu->widget);
4504         }
4505 }
4506
4507 static int
4508 menu_motion_handler(struct widget *widget,
4509                     struct input *input, uint32_t time,
4510                     float x, float y, void *data)
4511 {
4512         struct menu *menu = data;
4513
4514         if (widget == menu->widget)
4515                 menu_set_item(data, y);
4516
4517         return CURSOR_LEFT_PTR;
4518 }
4519
4520 static int
4521 menu_enter_handler(struct widget *widget,
4522                    struct input *input, float x, float y, void *data)
4523 {
4524         struct menu *menu = data;
4525
4526         if (widget == menu->widget)
4527                 menu_set_item(data, y);
4528
4529         return CURSOR_LEFT_PTR;
4530 }
4531
4532 static void
4533 menu_leave_handler(struct widget *widget, struct input *input, void *data)
4534 {
4535         struct menu *menu = data;
4536
4537         if (widget == menu->widget)
4538                 menu_set_item(data, -200);
4539 }
4540
4541 static void
4542 menu_button_handler(struct widget *widget,
4543                     struct input *input, uint32_t time,
4544                     uint32_t button, enum wl_pointer_button_state state,
4545                     void *data)
4546
4547 {
4548         struct menu *menu = data;
4549
4550         if (state == WL_POINTER_BUTTON_STATE_RELEASED &&
4551             (menu->release_count > 0 || time - menu->time > 500)) {
4552                 /* Either relase after press-drag-release or
4553                  * click-motion-click. */
4554                 menu->func(menu->user_data, input, menu->current);
4555                 input_ungrab(input);
4556                 menu_destroy(menu);
4557         } else if (state == WL_POINTER_BUTTON_STATE_RELEASED) {
4558                 menu->release_count++;
4559         }
4560 }
4561
4562 static void
4563 menu_touch_up_handler(struct widget *widget,
4564                                           struct input *input,
4565                                           uint32_t serial,
4566                                           uint32_t time,
4567                                           int32_t id,
4568                                           void *data)
4569 {
4570         struct menu *menu = data;
4571
4572         input_ungrab(input);
4573         menu_destroy(menu);
4574 }
4575
4576 static void
4577 menu_redraw_handler(struct widget *widget, void *data)
4578 {
4579         cairo_t *cr;
4580         struct menu *menu = data;
4581         int32_t x, y, width, height, i;
4582
4583         cr = widget_cairo_create(widget);
4584
4585         frame_repaint(menu->frame, cr);
4586         frame_interior(menu->frame, &x, &y, &width, &height);
4587
4588         theme_set_background_source(menu->window->display->theme,
4589                                     cr, THEME_FRAME_ACTIVE);
4590         cairo_rectangle(cr, x, y, width, height);
4591         cairo_fill(cr);
4592
4593         cairo_select_font_face(cr, "sans",
4594                                CAIRO_FONT_SLANT_NORMAL,
4595                                CAIRO_FONT_WEIGHT_NORMAL);
4596         cairo_set_font_size(cr, 12);
4597
4598         for (i = 0; i < menu->count; i++) {
4599                 if (i == menu->current) {
4600                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
4601                         cairo_rectangle(cr, x, y + i * 20, width, 20);
4602                         cairo_fill(cr);
4603                         cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
4604                         cairo_move_to(cr, x + 10, y + i * 20 + 16);
4605                         cairo_show_text(cr, menu->entries[i]);
4606                 } else {
4607                         cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
4608                         cairo_move_to(cr, x + 10, y + i * 20 + 16);
4609                         cairo_show_text(cr, menu->entries[i]);
4610                 }
4611         }
4612
4613         cairo_destroy(cr);
4614 }
4615
4616 static void
4617 handle_popup_popup_done(void *data, struct xdg_popup *xdg_popup, uint32_t serial)
4618 {
4619         struct window *window = data;
4620         struct menu *menu = window->main_surface->widget->user_data;
4621
4622         input_ungrab(menu->input);
4623         menu_destroy(menu);
4624 }
4625
4626 static const struct xdg_popup_listener xdg_popup_listener = {
4627         handle_popup_popup_done,
4628 };
4629
4630 static struct menu *
4631 create_menu(struct display *display,
4632             struct input *input, uint32_t time,
4633             menu_func_t func, const char **entries, int count,
4634             void *user_data)
4635 {
4636         struct window *window;
4637         struct menu *menu;
4638
4639         menu = malloc(sizeof *menu);
4640         if (!menu)
4641                 return NULL;
4642
4643         window = window_create_internal(display, 0);
4644         if (!window) {
4645                 free(menu);
4646                 return NULL;
4647         }
4648
4649         menu->window = window;
4650         menu->user_data = user_data;
4651         menu->widget = window_add_widget(menu->window, menu);
4652         menu->frame = frame_create(window->display->theme, 0, 0,
4653                                    FRAME_BUTTON_NONE, NULL);
4654         fail_on_null(menu->frame);
4655         menu->entries = entries;
4656         menu->count = count;
4657         menu->release_count = 0;
4658         menu->current = -1;
4659         menu->time = time;
4660         menu->func = func;
4661         menu->input = input;
4662
4663         input_ungrab(input);
4664
4665         widget_set_redraw_handler(menu->widget, menu_redraw_handler);
4666         widget_set_enter_handler(menu->widget, menu_enter_handler);
4667         widget_set_leave_handler(menu->widget, menu_leave_handler);
4668         widget_set_motion_handler(menu->widget, menu_motion_handler);
4669         widget_set_button_handler(menu->widget, menu_button_handler);
4670         widget_set_touch_up_handler(menu->widget, menu_touch_up_handler);
4671
4672         input_grab(input, menu->widget, 0);
4673         frame_resize_inside(menu->frame, 200, count * 20);
4674         frame_set_flag(menu->frame, FRAME_FLAG_ACTIVE);
4675         window_schedule_resize(window, frame_width(menu->frame),
4676                                frame_height(menu->frame));
4677
4678         return menu;
4679 }
4680
4681 struct window *
4682 window_create_menu(struct display *display,
4683                    struct input *input, uint32_t time,
4684                    menu_func_t func, const char **entries, int count,
4685                    void *user_data)
4686 {
4687         struct menu *menu;
4688         menu = create_menu(display, input, time, func, entries, count, user_data);
4689
4690         if (menu == NULL)
4691                 return NULL;
4692
4693         return menu->window;
4694 }
4695
4696 void
4697 window_show_menu(struct display *display,
4698                  struct input *input, uint32_t time, struct window *parent,
4699                  int32_t x, int32_t y,
4700                  menu_func_t func, const char **entries, int count)
4701 {
4702         struct menu *menu;
4703         struct window *window;
4704         int32_t ix, iy;
4705
4706         menu = create_menu(display, input, time, func, entries, count, parent);
4707
4708         if (menu == NULL)
4709                 return;
4710
4711         window = menu->window;
4712
4713         window_set_buffer_scale (menu->window, window_get_buffer_scale (parent));
4714         window_set_buffer_transform (menu->window, window_get_buffer_transform (parent));
4715
4716         window->x = x;
4717         window->y = y;
4718
4719         frame_interior(menu->frame, &ix, &iy, NULL, NULL);
4720
4721         window->xdg_popup = xdg_shell_get_xdg_popup(display->xdg_shell,
4722                                                     window->main_surface->surface,
4723                                                     parent->main_surface->surface,
4724                                                     input->seat,
4725                                                     display_get_serial(window->display),
4726                                                     window->x - ix,
4727                                                     window->y - iy,
4728                                                     0);
4729         fail_on_null(window->xdg_popup);
4730
4731         xdg_popup_set_user_data(window->xdg_popup, window);
4732         xdg_popup_add_listener(window->xdg_popup,
4733                                &xdg_popup_listener, window);
4734 }
4735
4736 void
4737 window_set_buffer_type(struct window *window, enum window_buffer_type type)
4738 {
4739         window->main_surface->buffer_type = type;
4740 }
4741
4742 enum window_buffer_type
4743 window_get_buffer_type(struct window *window)
4744 {
4745         return window->main_surface->buffer_type;
4746 }
4747
4748 void
4749 window_set_preferred_format(struct window *window,
4750                             enum preferred_format format)
4751 {
4752         window->preferred_format = format;
4753 }
4754
4755 struct widget *
4756 window_add_subsurface(struct window *window, void *data,
4757                       enum subsurface_mode default_mode)
4758 {
4759         struct widget *widget;
4760         struct surface *surface;
4761         struct wl_surface *parent;
4762         struct wl_subcompositor *subcompo = window->display->subcompositor;
4763
4764         surface = surface_create(window);
4765         surface->buffer_type = window_get_buffer_type(window);
4766         widget = widget_create(window, surface, data);
4767         wl_list_init(&widget->link);
4768         surface->widget = widget;
4769
4770         parent = window->main_surface->surface;
4771         surface->subsurface = wl_subcompositor_get_subsurface(subcompo,
4772                                                               surface->surface,
4773                                                               parent);
4774         surface->synchronized = 1;
4775
4776         switch (default_mode) {
4777         case SUBSURFACE_SYNCHRONIZED:
4778                 surface->synchronized_default = 1;
4779                 break;
4780         case SUBSURFACE_DESYNCHRONIZED:
4781                 surface->synchronized_default = 0;
4782                 break;
4783         default:
4784                 assert(!"bad enum subsurface_mode");
4785         }
4786
4787         window->resize_needed = 1;
4788         window_schedule_redraw(window);
4789
4790         return widget;
4791 }
4792
4793 static void
4794 display_handle_geometry(void *data,
4795                         struct wl_output *wl_output,
4796                         int x, int y,
4797                         int physical_width,
4798                         int physical_height,
4799                         int subpixel,
4800                         const char *make,
4801                         const char *model,
4802                         int transform)
4803 {
4804         struct output *output = data;
4805
4806         output->allocation.x = x;
4807         output->allocation.y = y;
4808         output->transform = transform;
4809
4810         if (output->make)
4811                 free(output->make);
4812         output->make = strdup(make);
4813
4814         if (output->model)
4815                 free(output->model);
4816         output->model = strdup(model);
4817 }
4818
4819 static void
4820 display_handle_done(void *data,
4821                      struct wl_output *wl_output)
4822 {
4823 }
4824
4825 static void
4826 display_handle_scale(void *data,
4827                      struct wl_output *wl_output,
4828                      int32_t scale)
4829 {
4830         struct output *output = data;
4831
4832         output->scale = scale;
4833 }
4834
4835 static void
4836 display_handle_mode(void *data,
4837                     struct wl_output *wl_output,
4838                     uint32_t flags,
4839                     int width,
4840                     int height,
4841                     int refresh)
4842 {
4843         struct output *output = data;
4844         struct display *display = output->display;
4845
4846         if (flags & WL_OUTPUT_MODE_CURRENT) {
4847                 output->allocation.width = width;
4848                 output->allocation.height = height;
4849                 if (display->output_configure_handler)
4850                         (*display->output_configure_handler)(
4851                                                 output, display->user_data);
4852         }
4853 }
4854
4855 static const struct wl_output_listener output_listener = {
4856         display_handle_geometry,
4857         display_handle_mode,
4858         display_handle_done,
4859         display_handle_scale
4860 };
4861
4862 static void
4863 display_add_output(struct display *d, uint32_t id)
4864 {
4865         struct output *output;
4866
4867         output = xzalloc(sizeof *output);
4868         output->display = d;
4869         output->scale = 1;
4870         output->output =
4871                 wl_registry_bind(d->registry, id, &wl_output_interface, 2);
4872         output->server_output_id = id;
4873         wl_list_insert(d->output_list.prev, &output->link);
4874
4875         wl_output_add_listener(output->output, &output_listener, output);
4876 }
4877
4878 static void
4879 output_destroy(struct output *output)
4880 {
4881         if (output->destroy_handler)
4882                 (*output->destroy_handler)(output, output->user_data);
4883
4884         wl_output_destroy(output->output);
4885         wl_list_remove(&output->link);
4886         free(output);
4887 }
4888
4889 static void
4890 display_destroy_output(struct display *d, uint32_t id)
4891 {
4892         struct output *output;
4893
4894         wl_list_for_each(output, &d->output_list, link) {
4895                 if (output->server_output_id == id) {
4896                         output_destroy(output);
4897                         break;
4898                 }
4899         }
4900 }
4901
4902 void
4903 display_set_global_handler(struct display *display,
4904                            display_global_handler_t handler)
4905 {
4906         struct global *global;
4907
4908         display->global_handler = handler;
4909         if (!handler)
4910                 return;
4911
4912         wl_list_for_each(global, &display->global_list, link)
4913                 display->global_handler(display,
4914                                         global->name, global->interface,
4915                                         global->version, display->user_data);
4916 }
4917
4918 void
4919 display_set_global_handler_remove(struct display *display,
4920                            display_global_handler_t remove_handler)
4921 {
4922         display->global_handler_remove = remove_handler;
4923         if (!remove_handler)
4924                 return;
4925 }
4926
4927 void
4928 display_set_output_configure_handler(struct display *display,
4929                                      display_output_handler_t handler)
4930 {
4931         struct output *output;
4932
4933         display->output_configure_handler = handler;
4934         if (!handler)
4935                 return;
4936
4937         wl_list_for_each(output, &display->output_list, link) {
4938                 if (output->allocation.width == 0 &&
4939                     output->allocation.height == 0)
4940                         continue;
4941
4942                 (*display->output_configure_handler)(output,
4943                                                      display->user_data);
4944         }
4945 }
4946
4947 void
4948 output_set_user_data(struct output *output, void *data)
4949 {
4950         output->user_data = data;
4951 }
4952
4953 void *
4954 output_get_user_data(struct output *output)
4955 {
4956         return output->user_data;
4957 }
4958
4959 void
4960 output_set_destroy_handler(struct output *output,
4961                            display_output_handler_t handler)
4962 {
4963         output->destroy_handler = handler;
4964         /* FIXME: implement this, once we have way to remove outputs */
4965 }
4966
4967 void
4968 output_get_allocation(struct output *output, struct rectangle *base)
4969 {
4970         struct rectangle allocation = output->allocation;
4971
4972         switch (output->transform) {
4973         case WL_OUTPUT_TRANSFORM_90:
4974         case WL_OUTPUT_TRANSFORM_270:
4975         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
4976         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
4977                 /* Swap width and height */
4978                 allocation.width = output->allocation.height;
4979                 allocation.height = output->allocation.width;
4980                 break;
4981         }
4982
4983         *base = allocation;
4984 }
4985
4986 struct wl_output *
4987 output_get_wl_output(struct output *output)
4988 {
4989         return output->output;
4990 }
4991
4992 enum wl_output_transform
4993 output_get_transform(struct output *output)
4994 {
4995         return output->transform;
4996 }
4997
4998 uint32_t
4999 output_get_scale(struct output *output)
5000 {
5001         return output->scale;
5002 }
5003
5004 const char *
5005 output_get_make(struct output *output)
5006 {
5007         return output->make;
5008 }
5009
5010 const char *
5011 output_get_model(struct output *output)
5012 {
5013         return output->model;
5014 }
5015
5016 static void
5017 fini_xkb(struct input *input)
5018 {
5019         xkb_state_unref(input->xkb.state);
5020         xkb_keymap_unref(input->xkb.keymap);
5021 }
5022
5023 #define MIN(a,b) ((a) < (b) ? a : b)
5024
5025 static void
5026 display_add_input(struct display *d, uint32_t id)
5027 {
5028         struct input *input;
5029
5030         input = xzalloc(sizeof *input);
5031         input->display = d;
5032         input->seat = wl_registry_bind(d->registry, id, &wl_seat_interface,
5033                                        MIN(d->seat_version, 4));
5034         input->touch_focus = NULL;
5035         input->pointer_focus = NULL;
5036         input->keyboard_focus = NULL;
5037         wl_list_init(&input->touch_point_list);
5038         wl_list_insert(d->input_list.prev, &input->link);
5039
5040         wl_seat_add_listener(input->seat, &seat_listener, input);
5041         wl_seat_set_user_data(input->seat, input);
5042
5043         if (d->data_device_manager) {
5044                 input->data_device =
5045                         wl_data_device_manager_get_data_device(d->data_device_manager,
5046                                                                input->seat);
5047                 wl_data_device_add_listener(input->data_device,
5048                                             &data_device_listener,
5049                                             input);
5050         }
5051
5052         input->pointer_surface = wl_compositor_create_surface(d->compositor);
5053
5054         set_repeat_info(input, 40, 400);
5055
5056         input->repeat_timer_fd = timerfd_create(CLOCK_MONOTONIC,
5057                                                 TFD_CLOEXEC | TFD_NONBLOCK);
5058         input->repeat_task.run = keyboard_repeat_func;
5059         display_watch_fd(d, input->repeat_timer_fd,
5060                          EPOLLIN, &input->repeat_task);
5061 }
5062
5063 static void
5064 input_destroy(struct input *input)
5065 {
5066         input_remove_keyboard_focus(input);
5067         input_remove_pointer_focus(input);
5068
5069         if (input->drag_offer)
5070                 data_offer_destroy(input->drag_offer);
5071
5072         if (input->selection_offer)
5073                 data_offer_destroy(input->selection_offer);
5074
5075         if (input->data_device)
5076                 wl_data_device_destroy(input->data_device);
5077
5078         if (input->display->seat_version >= 3) {
5079                 if (input->pointer)
5080                         wl_pointer_release(input->pointer);
5081                 if (input->keyboard)
5082                         wl_keyboard_release(input->keyboard);
5083         }
5084
5085         fini_xkb(input);
5086
5087         wl_surface_destroy(input->pointer_surface);
5088
5089         wl_list_remove(&input->link);
5090         wl_seat_destroy(input->seat);
5091         close(input->repeat_timer_fd);
5092         free(input);
5093 }
5094
5095 static void
5096 init_workspace_manager(struct display *d, uint32_t id)
5097 {
5098         d->workspace_manager =
5099                 wl_registry_bind(d->registry, id,
5100                                  &workspace_manager_interface, 1);
5101         if (d->workspace_manager != NULL)
5102                 workspace_manager_add_listener(d->workspace_manager,
5103                                                &workspace_manager_listener,
5104                                                d);
5105 }
5106
5107 static void
5108 shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
5109 {
5110         struct display *d = data;
5111
5112         if (format == WL_SHM_FORMAT_RGB565)
5113                 d->has_rgb565 = 1;
5114 }
5115
5116 struct wl_shm_listener shm_listener = {
5117         shm_format
5118 };
5119
5120 static void
5121 xdg_shell_ping(void *data, struct xdg_shell *shell, uint32_t serial)
5122 {
5123         xdg_shell_pong(shell, serial);
5124 }
5125
5126 static const struct xdg_shell_listener xdg_shell_listener = {
5127         xdg_shell_ping,
5128 };
5129
5130 #define XDG_VERSION 4 /* The version of xdg-shell that we implement */
5131 #ifdef static_assert
5132 static_assert(XDG_VERSION == XDG_SHELL_VERSION_CURRENT,
5133               "Interface version doesn't match implementation version");
5134 #endif
5135
5136 static void
5137 registry_handle_global(void *data, struct wl_registry *registry, uint32_t id,
5138                        const char *interface, uint32_t version)
5139 {
5140         struct display *d = data;
5141         struct global *global;
5142
5143         global = xmalloc(sizeof *global);
5144         global->name = id;
5145         global->interface = strdup(interface);
5146         global->version = version;
5147         wl_list_insert(d->global_list.prev, &global->link);
5148
5149         if (strcmp(interface, "wl_compositor") == 0) {
5150                 d->compositor = wl_registry_bind(registry, id,
5151                                                  &wl_compositor_interface, 3);
5152         } else if (strcmp(interface, "wl_output") == 0) {
5153                 display_add_output(d, id);
5154         } else if (strcmp(interface, "wl_seat") == 0) {
5155                 d->seat_version = version;
5156                 display_add_input(d, id);
5157         } else if (strcmp(interface, "wl_shm") == 0) {
5158                 d->shm = wl_registry_bind(registry, id, &wl_shm_interface, 1);
5159                 wl_shm_add_listener(d->shm, &shm_listener, d);
5160         } else if (strcmp(interface, "wl_data_device_manager") == 0) {
5161                 d->data_device_manager =
5162                         wl_registry_bind(registry, id,
5163                                          &wl_data_device_manager_interface, 1);
5164         } else if (strcmp(interface, "xdg_shell") == 0) {
5165                 d->xdg_shell = wl_registry_bind(registry, id,
5166                                                 &xdg_shell_interface, 1);
5167                 xdg_shell_use_unstable_version(d->xdg_shell, XDG_VERSION);
5168                 xdg_shell_add_listener(d->xdg_shell, &xdg_shell_listener, d);
5169         } else if (strcmp(interface, "text_cursor_position") == 0) {
5170                 d->text_cursor_position =
5171                         wl_registry_bind(registry, id,
5172                                          &text_cursor_position_interface, 1);
5173         } else if (strcmp(interface, "workspace_manager") == 0) {
5174                 init_workspace_manager(d, id);
5175         } else if (strcmp(interface, "wl_subcompositor") == 0) {
5176                 d->subcompositor =
5177                         wl_registry_bind(registry, id,
5178                                          &wl_subcompositor_interface, 1);
5179         }
5180
5181         if (d->global_handler)
5182                 d->global_handler(d, id, interface, version, d->user_data);
5183 }
5184
5185 static void
5186 registry_handle_global_remove(void *data, struct wl_registry *registry,
5187                               uint32_t name)
5188 {
5189         struct display *d = data;
5190         struct global *global;
5191         struct global *tmp;
5192
5193         wl_list_for_each_safe(global, tmp, &d->global_list, link) {
5194                 if (global->name != name)
5195                         continue;
5196
5197                 if (strcmp(global->interface, "wl_output") == 0)
5198                         display_destroy_output(d, name);
5199
5200                 /* XXX: Should destroy remaining bound globals */
5201
5202                 if (d->global_handler_remove)
5203                         d->global_handler_remove(d, name, global->interface,
5204                                         global->version, d->user_data);
5205
5206                 wl_list_remove(&global->link);
5207                 free(global->interface);
5208                 free(global);
5209         }
5210 }
5211
5212 void *
5213 display_bind(struct display *display, uint32_t name,
5214              const struct wl_interface *interface, uint32_t version)
5215 {
5216         return wl_registry_bind(display->registry, name, interface, version);
5217 }
5218
5219 static const struct wl_registry_listener registry_listener = {
5220         registry_handle_global,
5221         registry_handle_global_remove
5222 };
5223
5224 #ifdef HAVE_CAIRO_EGL
5225 static int
5226 init_egl(struct display *d)
5227 {
5228         EGLint major, minor;
5229         EGLint n;
5230
5231 #ifdef USE_CAIRO_GLESV2
5232 #  define GL_BIT EGL_OPENGL_ES2_BIT
5233 #else
5234 #  define GL_BIT EGL_OPENGL_BIT
5235 #endif
5236
5237         static const EGLint argb_cfg_attribs[] = {
5238                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
5239                 EGL_RED_SIZE, 1,
5240                 EGL_GREEN_SIZE, 1,
5241                 EGL_BLUE_SIZE, 1,
5242                 EGL_ALPHA_SIZE, 1,
5243                 EGL_DEPTH_SIZE, 1,
5244                 EGL_RENDERABLE_TYPE, GL_BIT,
5245                 EGL_NONE
5246         };
5247
5248 #ifdef USE_CAIRO_GLESV2
5249         static const EGLint context_attribs[] = {
5250                 EGL_CONTEXT_CLIENT_VERSION, 2,
5251                 EGL_NONE
5252         };
5253         EGLint api = EGL_OPENGL_ES_API;
5254 #else
5255         EGLint *context_attribs = NULL;
5256         EGLint api = EGL_OPENGL_API;
5257 #endif
5258
5259         d->dpy = eglGetDisplay(d->display);
5260         if (!eglInitialize(d->dpy, &major, &minor)) {
5261                 fprintf(stderr, "failed to initialize EGL\n");
5262                 return -1;
5263         }
5264
5265         if (!eglBindAPI(api)) {
5266                 fprintf(stderr, "failed to bind EGL client API\n");
5267                 return -1;
5268         }
5269
5270         if (!eglChooseConfig(d->dpy, argb_cfg_attribs,
5271                              &d->argb_config, 1, &n) || n != 1) {
5272                 fprintf(stderr, "failed to choose argb EGL config\n");
5273                 return -1;
5274         }
5275
5276         d->argb_ctx = eglCreateContext(d->dpy, d->argb_config,
5277                                        EGL_NO_CONTEXT, context_attribs);
5278         if (d->argb_ctx == NULL) {
5279                 fprintf(stderr, "failed to create EGL context\n");
5280                 return -1;
5281         }
5282
5283         d->argb_device = cairo_egl_device_create(d->dpy, d->argb_ctx);
5284         if (cairo_device_status(d->argb_device) != CAIRO_STATUS_SUCCESS) {
5285                 fprintf(stderr, "failed to get cairo EGL argb device\n");
5286                 return -1;
5287         }
5288
5289         return 0;
5290 }
5291
5292 static void
5293 fini_egl(struct display *display)
5294 {
5295         cairo_device_destroy(display->argb_device);
5296
5297         eglMakeCurrent(display->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE,
5298                        EGL_NO_CONTEXT);
5299
5300         eglTerminate(display->dpy);
5301         eglReleaseThread();
5302 }
5303 #endif
5304
5305 static void
5306 init_dummy_surface(struct display *display)
5307 {
5308         int len;
5309         void *data;
5310
5311         len = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, 1);
5312         data = malloc(len);
5313         display->dummy_surface =
5314                 cairo_image_surface_create_for_data(data, CAIRO_FORMAT_ARGB32,
5315                                                     1, 1, len);
5316         display->dummy_surface_data = data;
5317 }
5318
5319 static void
5320 handle_display_data(struct task *task, uint32_t events)
5321 {
5322         struct display *display =
5323                 container_of(task, struct display, display_task);
5324         struct epoll_event ep;
5325         int ret;
5326
5327         display->display_fd_events = events;
5328
5329         if (events & EPOLLERR || events & EPOLLHUP) {
5330                 display_exit(display);
5331                 return;
5332         }
5333
5334         if (events & EPOLLIN) {
5335                 ret = wl_display_dispatch(display->display);
5336                 if (ret == -1) {
5337                         display_exit(display);
5338                         return;
5339                 }
5340         }
5341
5342         if (events & EPOLLOUT) {
5343                 ret = wl_display_flush(display->display);
5344                 if (ret == 0) {
5345                         ep.events = EPOLLIN | EPOLLERR | EPOLLHUP;
5346                         ep.data.ptr = &display->display_task;
5347                         epoll_ctl(display->epoll_fd, EPOLL_CTL_MOD,
5348                                   display->display_fd, &ep);
5349                 } else if (ret == -1 && errno != EAGAIN) {
5350                         display_exit(display);
5351                         return;
5352                 }
5353         }
5354 }
5355
5356 static void
5357 log_handler(const char *format, va_list args)
5358 {
5359         vfprintf(stderr, format, args);
5360 }
5361
5362 struct display *
5363 display_create(int *argc, char *argv[])
5364 {
5365         struct display *d;
5366
5367         wl_log_set_handler_client(log_handler);
5368
5369         d = zalloc(sizeof *d);
5370         if (d == NULL)
5371                 return NULL;
5372
5373         d->display = wl_display_connect(NULL);
5374         if (d->display == NULL) {
5375                 fprintf(stderr, "failed to connect to Wayland display: %m\n");
5376                 free(d);
5377                 return NULL;
5378         }
5379
5380         d->xkb_context = xkb_context_new(0);
5381         if (d->xkb_context == NULL) {
5382                 fprintf(stderr, "Failed to create XKB context\n");
5383                 free(d);
5384                 return NULL;
5385         }
5386
5387         d->epoll_fd = os_epoll_create_cloexec();
5388         d->display_fd = wl_display_get_fd(d->display);
5389         d->display_task.run = handle_display_data;
5390         display_watch_fd(d, d->display_fd, EPOLLIN | EPOLLERR | EPOLLHUP,
5391                          &d->display_task);
5392
5393         wl_list_init(&d->deferred_list);
5394         wl_list_init(&d->input_list);
5395         wl_list_init(&d->output_list);
5396         wl_list_init(&d->global_list);
5397
5398         d->workspace = 0;
5399         d->workspace_count = 1;
5400
5401         d->registry = wl_display_get_registry(d->display);
5402         wl_registry_add_listener(d->registry, &registry_listener, d);
5403
5404         if (wl_display_dispatch(d->display) < 0) {
5405                 fprintf(stderr, "Failed to process Wayland connection: %m\n");
5406                 return NULL;
5407         }
5408
5409 #ifdef HAVE_CAIRO_EGL
5410         if (init_egl(d) < 0)
5411                 fprintf(stderr, "EGL does not seem to work, "
5412                         "falling back to software rendering and wl_shm.\n");
5413 #endif
5414
5415         create_cursors(d);
5416
5417         d->theme = theme_create();
5418
5419         wl_list_init(&d->window_list);
5420
5421         init_dummy_surface(d);
5422
5423         return d;
5424 }
5425
5426 static void
5427 display_destroy_outputs(struct display *display)
5428 {
5429         struct output *tmp;
5430         struct output *output;
5431
5432         wl_list_for_each_safe(output, tmp, &display->output_list, link)
5433                 output_destroy(output);
5434 }
5435
5436 static void
5437 display_destroy_inputs(struct display *display)
5438 {
5439         struct input *tmp;
5440         struct input *input;
5441
5442         wl_list_for_each_safe(input, tmp, &display->input_list, link)
5443                 input_destroy(input);
5444 }
5445
5446 void
5447 display_destroy(struct display *display)
5448 {
5449         if (!wl_list_empty(&display->window_list))
5450                 fprintf(stderr, "toytoolkit warning: %d windows exist.\n",
5451                         wl_list_length(&display->window_list));
5452
5453         if (!wl_list_empty(&display->deferred_list))
5454                 fprintf(stderr, "toytoolkit warning: deferred tasks exist.\n");
5455
5456         cairo_surface_destroy(display->dummy_surface);
5457         free(display->dummy_surface_data);
5458
5459         display_destroy_outputs(display);
5460         display_destroy_inputs(display);
5461
5462         xkb_context_unref(display->xkb_context);
5463
5464         theme_destroy(display->theme);
5465         destroy_cursors(display);
5466
5467 #ifdef HAVE_CAIRO_EGL
5468         if (display->argb_device)
5469                 fini_egl(display);
5470 #endif
5471
5472         if (display->subcompositor)
5473                 wl_subcompositor_destroy(display->subcompositor);
5474
5475         if (display->xdg_shell)
5476                 xdg_shell_destroy(display->xdg_shell);
5477
5478         if (display->shm)
5479                 wl_shm_destroy(display->shm);
5480
5481         if (display->data_device_manager)
5482                 wl_data_device_manager_destroy(display->data_device_manager);
5483
5484         wl_compositor_destroy(display->compositor);
5485         wl_registry_destroy(display->registry);
5486
5487         close(display->epoll_fd);
5488
5489         if (!(display->display_fd_events & EPOLLERR) &&
5490             !(display->display_fd_events & EPOLLHUP))
5491                 wl_display_flush(display->display);
5492
5493         wl_display_disconnect(display->display);
5494         free(display);
5495 }
5496
5497 void
5498 display_set_user_data(struct display *display, void *data)
5499 {
5500         display->user_data = data;
5501 }
5502
5503 void *
5504 display_get_user_data(struct display *display)
5505 {
5506         return display->user_data;
5507 }
5508
5509 struct wl_display *
5510 display_get_display(struct display *display)
5511 {
5512         return display->display;
5513 }
5514
5515 int
5516 display_has_subcompositor(struct display *display)
5517 {
5518         if (display->subcompositor)
5519                 return 1;
5520
5521         wl_display_roundtrip(display->display);
5522
5523         return display->subcompositor != NULL;
5524 }
5525
5526 cairo_device_t *
5527 display_get_cairo_device(struct display *display)
5528 {
5529         return display->argb_device;
5530 }
5531
5532 struct output *
5533 display_get_output(struct display *display)
5534 {
5535         return container_of(display->output_list.next, struct output, link);
5536 }
5537
5538 struct wl_compositor *
5539 display_get_compositor(struct display *display)
5540 {
5541         return display->compositor;
5542 }
5543
5544 uint32_t
5545 display_get_serial(struct display *display)
5546 {
5547         return display->serial;
5548 }
5549
5550 EGLDisplay
5551 display_get_egl_display(struct display *d)
5552 {
5553         return d->dpy;
5554 }
5555
5556 struct wl_data_source *
5557 display_create_data_source(struct display *display)
5558 {
5559         if (display->data_device_manager)
5560                 return wl_data_device_manager_create_data_source(display->data_device_manager);
5561         else
5562                 return NULL;
5563 }
5564
5565 EGLConfig
5566 display_get_argb_egl_config(struct display *d)
5567 {
5568         return d->argb_config;
5569 }
5570
5571 int
5572 display_acquire_window_surface(struct display *display,
5573                                struct window *window,
5574                                EGLContext ctx)
5575 {
5576         struct surface *surface = window->main_surface;
5577
5578         if (surface->buffer_type != WINDOW_BUFFER_TYPE_EGL_WINDOW)
5579                 return -1;
5580
5581         widget_get_cairo_surface(window->main_surface->widget);
5582         return surface->toysurface->acquire(surface->toysurface, ctx);
5583 }
5584
5585 void
5586 display_release_window_surface(struct display *display,
5587                                struct window *window)
5588 {
5589         struct surface *surface = window->main_surface;
5590
5591         if (surface->buffer_type != WINDOW_BUFFER_TYPE_EGL_WINDOW)
5592                 return;
5593
5594         surface->toysurface->release(surface->toysurface);
5595 }
5596
5597 void
5598 display_defer(struct display *display, struct task *task)
5599 {
5600         wl_list_insert(&display->deferred_list, &task->link);
5601 }
5602
5603 void
5604 display_watch_fd(struct display *display,
5605                  int fd, uint32_t events, struct task *task)
5606 {
5607         struct epoll_event ep;
5608
5609         ep.events = events;
5610         ep.data.ptr = task;
5611         epoll_ctl(display->epoll_fd, EPOLL_CTL_ADD, fd, &ep);
5612 }
5613
5614 void
5615 display_unwatch_fd(struct display *display, int fd)
5616 {
5617         epoll_ctl(display->epoll_fd, EPOLL_CTL_DEL, fd, NULL);
5618 }
5619
5620 void
5621 display_run(struct display *display)
5622 {
5623         struct task *task;
5624         struct epoll_event ep[16];
5625         int i, count, ret;
5626
5627         display->running = 1;
5628         while (1) {
5629                 while (!wl_list_empty(&display->deferred_list)) {
5630                         task = container_of(display->deferred_list.prev,
5631                                             struct task, link);
5632                         wl_list_remove(&task->link);
5633                         task->run(task, 0);
5634                 }
5635
5636                 wl_display_dispatch_pending(display->display);
5637
5638                 if (!display->running)
5639                         break;
5640
5641                 ret = wl_display_flush(display->display);
5642                 if (ret < 0 && errno == EAGAIN) {
5643                         ep[0].events =
5644                                 EPOLLIN | EPOLLOUT | EPOLLERR | EPOLLHUP;
5645                         ep[0].data.ptr = &display->display_task;
5646
5647                         epoll_ctl(display->epoll_fd, EPOLL_CTL_MOD,
5648                                   display->display_fd, &ep[0]);
5649                 } else if (ret < 0) {
5650                         break;
5651                 }
5652
5653                 count = epoll_wait(display->epoll_fd,
5654                                    ep, ARRAY_LENGTH(ep), -1);
5655                 for (i = 0; i < count; i++) {
5656                         task = ep[i].data.ptr;
5657                         task->run(task, ep[i].events);
5658                 }
5659         }
5660 }
5661
5662 void
5663 display_exit(struct display *display)
5664 {
5665         display->running = 0;
5666 }
5667
5668 void
5669 keysym_modifiers_add(struct wl_array *modifiers_map,
5670                      const char *name)
5671 {
5672         size_t len = strlen(name) + 1;
5673         char *p;
5674
5675         p = wl_array_add(modifiers_map, len);
5676
5677         if (p == NULL)
5678                 return;
5679
5680         strncpy(p, name, len);
5681 }
5682
5683 static xkb_mod_index_t
5684 keysym_modifiers_get_index(struct wl_array *modifiers_map,
5685                            const char *name)
5686 {
5687         xkb_mod_index_t index = 0;
5688         char *p = modifiers_map->data;
5689
5690         while ((const char *)p < (const char *)(modifiers_map->data + modifiers_map->size)) {
5691                 if (strcmp(p, name) == 0)
5692                         return index;
5693
5694                 index++;
5695                 p += strlen(p) + 1;
5696         }
5697
5698         return XKB_MOD_INVALID;
5699 }
5700
5701 xkb_mod_mask_t
5702 keysym_modifiers_get_mask(struct wl_array *modifiers_map,
5703                           const char *name)
5704 {
5705         xkb_mod_index_t index = keysym_modifiers_get_index(modifiers_map, name);
5706
5707         if (index == XKB_MOD_INVALID)
5708                 return XKB_MOD_INVALID;
5709
5710         return 1 << index;
5711 }
5712
5713 void *
5714 fail_on_null(void *p)
5715 {
5716         if (p == NULL) {
5717                 fprintf(stderr, "%s: out of memory\n", program_invocation_short_name);
5718                 exit(EXIT_FAILURE);
5719         }
5720
5721         return p;
5722 }
5723
5724 void *
5725 xmalloc(size_t s)
5726 {
5727         return fail_on_null(malloc(s));
5728 }
5729
5730 void *
5731 xzalloc(size_t s)
5732 {
5733         return fail_on_null(zalloc(s));
5734 }
5735
5736 char *
5737 xstrdup(const char *s)
5738 {
5739         return fail_on_null(strdup(s));
5740 }
5741
5742 void *
5743 xrealloc(char *p, size_t s)
5744 {
5745         return fail_on_null(realloc(p, s));
5746 }