clients/window.c

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