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