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