clients/window.c

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