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
2471         frame = xzalloc(sizeof *frame);
2472         frame->frame = frame_create(window->display->theme, 0, 0,
2473                                     FRAME_BUTTON_ALL, window->title);
2474
2475         frame->widget = window_add_widget(window, frame);
2476         frame->child = widget_add_widget(frame->widget, data);
2477
2478         widget_set_redraw_handler(frame->widget, frame_redraw_handler);
2479         widget_set_resize_handler(frame->widget, frame_resize_handler);
2480         widget_set_enter_handler(frame->widget, frame_enter_handler);
2481         widget_set_leave_handler(frame->widget, frame_leave_handler);
2482         widget_set_motion_handler(frame->widget, frame_motion_handler);
2483         widget_set_button_handler(frame->widget, frame_button_handler);
2484         widget_set_touch_down_handler(frame->widget, frame_touch_down_handler);
2485         widget_set_touch_up_handler(frame->widget, frame_touch_up_handler);
2486
2487         window->frame = frame;
2488
2489         return frame->child;
2490 }
2491
2492 void
2493 window_frame_set_child_size(struct widget *widget, int child_width,
2494                             int child_height)
2495 {
2496         struct display *display = widget->window->display;
2497         struct theme *t = display->theme;
2498         int decoration_width, decoration_height;
2499         int width, height;
2500         int margin = widget->window->type == TYPE_MAXIMIZED ? 0 : t->margin;
2501
2502         if (widget->window->type != TYPE_FULLSCREEN) {
2503                 decoration_width = (t->width + margin) * 2;
2504                 decoration_height = t->width +
2505                         t->titlebar_height + margin * 2;
2506
2507                 width = child_width + decoration_width;
2508                 height = child_height + decoration_height;
2509         } else {
2510                 width = child_width;
2511                 height = child_height;
2512         }
2513
2514         window_schedule_resize(widget->window, width, height);
2515 }
2516
2517 static void
2518 window_frame_destroy(struct window_frame *frame)
2519 {
2520         frame_destroy(frame->frame);
2521
2522         /* frame->child must be destroyed by the application */
2523         widget_destroy(frame->widget);
2524         free(frame);
2525 }
2526
2527 static void
2528 input_set_focus_widget(struct input *input, struct widget *focus,
2529                        float x, float y)
2530 {
2531         struct widget *old, *widget;
2532         int cursor;
2533
2534         if (focus == input->focus_widget)
2535                 return;
2536
2537         old = input->focus_widget;
2538         if (old) {
2539                 widget = old;
2540                 if (input->grab)
2541                         widget = input->grab;
2542                 if (widget->leave_handler)
2543                         widget->leave_handler(old, input, widget->user_data);
2544                 input->focus_widget = NULL;
2545         }
2546
2547         if (focus) {
2548                 widget = focus;
2549                 if (input->grab)
2550                         widget = input->grab;
2551                 input->focus_widget = focus;
2552                 if (widget->enter_handler)
2553                         cursor = widget->enter_handler(focus, input, x, y,
2554                                                        widget->user_data);
2555                 else
2556                         cursor = widget->default_cursor;
2557
2558                 input_set_pointer_image(input, cursor);
2559         }
2560 }
2561
2562 void
2563 touch_grab(struct input  *input, int32_t touch_id)
2564 {
2565         input->touch_grab = 1;
2566         input->touch_grab_id = touch_id;
2567 }
2568
2569 void
2570 touch_ungrab(struct input *input)
2571 {
2572         struct touch_point *tp, *tmp;
2573
2574         input->touch_grab = 0;
2575
2576         wl_list_for_each_safe(tp, tmp,
2577                         &input->touch_point_list, link) {
2578                 if (tp->id != input->touch_grab_id)
2579                         continue;
2580                 wl_list_remove(&tp->link);
2581                 free(tp);
2582
2583                 return;
2584         }
2585 }
2586
2587 void
2588 input_grab(struct input *input, struct widget *widget, uint32_t button)
2589 {
2590         input->grab = widget;
2591         input->grab_button = button;
2592 }
2593
2594 void
2595 input_ungrab(struct input *input)
2596 {
2597         struct widget *widget;
2598
2599         input->grab = NULL;
2600         if (input->pointer_focus) {
2601                 widget = window_find_widget(input->pointer_focus,
2602                                             input->sx, input->sy);
2603                 input_set_focus_widget(input, widget, input->sx, input->sy);
2604         }
2605 }
2606
2607 static void
2608 input_remove_pointer_focus(struct input *input)
2609 {
2610         struct window *window = input->pointer_focus;
2611
2612         if (!window)
2613                 return;
2614
2615         input_set_focus_widget(input, NULL, 0, 0);
2616
2617         input->pointer_focus = NULL;
2618         input->current_cursor = CURSOR_UNSET;
2619 }
2620
2621 static void
2622 pointer_handle_enter(void *data, struct wl_pointer *pointer,
2623                      uint32_t serial, struct wl_surface *surface,
2624                      wl_fixed_t sx_w, wl_fixed_t sy_w)
2625 {
2626         struct input *input = data;
2627         struct window *window;
2628         struct widget *widget;
2629         float sx = wl_fixed_to_double(sx_w);
2630         float sy = wl_fixed_to_double(sy_w);
2631
2632         if (!surface) {
2633                 /* enter event for a window we've just destroyed */
2634                 return;
2635         }
2636
2637         input->display->serial = serial;
2638         input->pointer_enter_serial = serial;
2639         input->pointer_focus = wl_surface_get_user_data(surface);
2640         window = input->pointer_focus;
2641
2642         if (window->resizing) {
2643                 window->resizing = 0;
2644                 /* Schedule a redraw to free the pool */
2645                 window_schedule_redraw(window);
2646         }
2647
2648         input->sx = sx;
2649         input->sy = sy;
2650
2651         widget = window_find_widget(window, sx, sy);
2652         input_set_focus_widget(input, widget, sx, sy);
2653 }
2654
2655 static void
2656 pointer_handle_leave(void *data, struct wl_pointer *pointer,
2657                      uint32_t serial, struct wl_surface *surface)
2658 {
2659         struct input *input = data;
2660
2661         input->display->serial = serial;
2662         input_remove_pointer_focus(input);
2663 }
2664
2665 static void
2666 pointer_handle_motion(void *data, struct wl_pointer *pointer,
2667                       uint32_t time, wl_fixed_t sx_w, wl_fixed_t sy_w)
2668 {
2669         struct input *input = data;
2670         struct window *window = input->pointer_focus;
2671         struct widget *widget;
2672         int cursor;
2673         float sx = wl_fixed_to_double(sx_w);
2674         float sy = wl_fixed_to_double(sy_w);
2675
2676         input->sx = sx;
2677         input->sy = sy;
2678
2679         if (!window)
2680                 return;
2681
2682         /* when making the window smaller - e.g. after a unmaximise we might
2683          * still have a pending motion event that the compositor has picked
2684          * based on the old surface dimensions
2685          */
2686         if (sx > window->main_surface->allocation.width ||
2687             sy > window->main_surface->allocation.height)
2688                 return;
2689
2690         if (!(input->grab && input->grab_button)) {
2691                 widget = window_find_widget(window, sx, sy);
2692                 input_set_focus_widget(input, widget, sx, sy);
2693         }
2694
2695         if (input->grab)
2696                 widget = input->grab;
2697         else
2698                 widget = input->focus_widget;
2699         if (widget) {
2700                 if (widget->motion_handler)
2701                         cursor = widget->motion_handler(input->focus_widget,
2702                                                         input, time, sx, sy,
2703                                                         widget->user_data);
2704                 else
2705                         cursor = widget->default_cursor;
2706         } else
2707                 cursor = CURSOR_LEFT_PTR;
2708
2709         input_set_pointer_image(input, cursor);
2710 }
2711
2712 static void
2713 pointer_handle_button(void *data, struct wl_pointer *pointer, uint32_t serial,
2714                       uint32_t time, uint32_t button, uint32_t state_w)
2715 {
2716         struct input *input = data;
2717         struct widget *widget;
2718         enum wl_pointer_button_state state = state_w;
2719
2720         input->display->serial = serial;
2721         if (input->focus_widget && input->grab == NULL &&
2722             state == WL_POINTER_BUTTON_STATE_PRESSED)
2723                 input_grab(input, input->focus_widget, button);
2724
2725         widget = input->grab;
2726         if (widget && widget->button_handler)
2727                 (*widget->button_handler)(widget,
2728                                           input, time,
2729                                           button, state,
2730                                           input->grab->user_data);
2731
2732         if (input->grab && input->grab_button == button &&
2733             state == WL_POINTER_BUTTON_STATE_RELEASED)
2734                 input_ungrab(input);
2735 }
2736
2737 static void
2738 pointer_handle_axis(void *data, struct wl_pointer *pointer,
2739                     uint32_t time, uint32_t axis, wl_fixed_t value)
2740 {
2741         struct input *input = data;
2742         struct widget *widget;
2743
2744         widget = input->focus_widget;
2745         if (input->grab)
2746                 widget = input->grab;
2747         if (widget && widget->axis_handler)
2748                 (*widget->axis_handler)(widget,
2749                                         input, time,
2750                                         axis, value,
2751                                         widget->user_data);
2752 }
2753
2754 static const struct wl_pointer_listener pointer_listener = {
2755         pointer_handle_enter,
2756         pointer_handle_leave,
2757         pointer_handle_motion,
2758         pointer_handle_button,
2759         pointer_handle_axis,
2760 };
2761
2762 static void
2763 input_remove_keyboard_focus(struct input *input)
2764 {
2765         struct window *window = input->keyboard_focus;
2766         struct itimerspec its;
2767
2768         its.it_interval.tv_sec = 0;
2769         its.it_interval.tv_nsec = 0;
2770         its.it_value.tv_sec = 0;
2771         its.it_value.tv_nsec = 0;
2772         timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
2773
2774         if (!window)
2775                 return;
2776
2777         window->focus_count--;
2778         if (window->keyboard_focus_handler)
2779                 (*window->keyboard_focus_handler)(window, NULL,
2780                                                   window->user_data);
2781
2782         input->keyboard_focus = NULL;
2783 }
2784
2785 static void
2786 keyboard_repeat_func(struct task *task, uint32_t events)
2787 {
2788         struct input *input =
2789                 container_of(task, struct input, repeat_task);
2790         struct window *window = input->keyboard_focus;
2791         uint64_t exp;
2792
2793         if (read(input->repeat_timer_fd, &exp, sizeof exp) != sizeof exp)
2794                 /* If we change the timer between the fd becoming
2795                  * readable and getting here, there'll be nothing to
2796                  * read and we get EAGAIN. */
2797                 return;
2798
2799         if (window && window->key_handler) {
2800                 (*window->key_handler)(window, input, input->repeat_time,
2801                                        input->repeat_key, input->repeat_sym,
2802                                        WL_KEYBOARD_KEY_STATE_PRESSED,
2803                                        window->user_data);
2804         }
2805 }
2806
2807 static void
2808 keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
2809                        uint32_t format, int fd, uint32_t size)
2810 {
2811         struct input *input = data;
2812         struct xkb_keymap *keymap;
2813         struct xkb_state *state;
2814         char *map_str;
2815
2816         if (!data) {
2817                 close(fd);
2818                 return;
2819         }
2820
2821         if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
2822                 close(fd);
2823                 return;
2824         }
2825
2826         map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
2827         if (map_str == MAP_FAILED) {
2828                 close(fd);
2829                 return;
2830         }
2831
2832         keymap = xkb_map_new_from_string(input->display->xkb_context,
2833                                          map_str,
2834                                          XKB_KEYMAP_FORMAT_TEXT_V1,
2835                                          0);
2836         munmap(map_str, size);
2837         close(fd);
2838
2839         if (!keymap) {
2840                 fprintf(stderr, "failed to compile keymap\n");
2841                 return;
2842         }
2843
2844         state = xkb_state_new(keymap);
2845         if (!state) {
2846                 fprintf(stderr, "failed to create XKB state\n");
2847                 xkb_map_unref(keymap);
2848                 return;
2849         }
2850
2851         xkb_keymap_unref(input->xkb.keymap);
2852         xkb_state_unref(input->xkb.state);
2853         input->xkb.keymap = keymap;
2854         input->xkb.state = state;
2855
2856         input->xkb.control_mask =
2857                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Control");
2858         input->xkb.alt_mask =
2859                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Mod1");
2860         input->xkb.shift_mask =
2861                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Shift");
2862 }
2863
2864 static void
2865 keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
2866                       uint32_t serial, struct wl_surface *surface,
2867                       struct wl_array *keys)
2868 {
2869         struct input *input = data;
2870         struct window *window;
2871
2872         input->display->serial = serial;
2873         input->keyboard_focus = wl_surface_get_user_data(surface);
2874
2875         window = input->keyboard_focus;
2876         window->focus_count++;
2877         if (window->keyboard_focus_handler)
2878                 (*window->keyboard_focus_handler)(window,
2879                                                   input, window->user_data);
2880 }
2881
2882 static void
2883 keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,
2884                       uint32_t serial, struct wl_surface *surface)
2885 {
2886         struct input *input = data;
2887
2888         input->display->serial = serial;
2889         input_remove_keyboard_focus(input);
2890 }
2891
2892 static void
2893 keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
2894                     uint32_t serial, uint32_t time, uint32_t key,
2895                     uint32_t state_w)
2896 {
2897         struct input *input = data;
2898         struct window *window = input->keyboard_focus;
2899         uint32_t code, num_syms;
2900         enum wl_keyboard_key_state state = state_w;
2901         const xkb_keysym_t *syms;
2902         xkb_keysym_t sym;
2903         struct itimerspec its;
2904
2905         input->display->serial = serial;
2906         code = key + 8;
2907         if (!window || !input->xkb.state)
2908                 return;
2909
2910         num_syms = xkb_key_get_syms(input->xkb.state, code, &syms);
2911
2912         sym = XKB_KEY_NoSymbol;
2913         if (num_syms == 1)
2914                 sym = syms[0];
2915
2916         if (sym == XKB_KEY_F5 && input->modifiers == MOD_ALT_MASK) {
2917                 if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
2918                         window_set_maximized(window,
2919                                              window->type != TYPE_MAXIMIZED);
2920         } else if (sym == XKB_KEY_F11 &&
2921                    window->fullscreen_handler &&
2922                    state == WL_KEYBOARD_KEY_STATE_PRESSED) {
2923                 window->fullscreen_handler(window, window->user_data);
2924         } else if (sym == XKB_KEY_F4 &&
2925                    input->modifiers == MOD_ALT_MASK &&
2926                    state == WL_KEYBOARD_KEY_STATE_PRESSED) {
2927                 if (window->close_handler)
2928                         window->close_handler(window->user_data);
2929                 else
2930                         display_exit(window->display);
2931         } else if (window->key_handler) {
2932                 (*window->key_handler)(window, input, time, key,
2933                                        sym, state, window->user_data);
2934         }
2935
2936         if (state == WL_KEYBOARD_KEY_STATE_RELEASED &&
2937             key == input->repeat_key) {
2938                 its.it_interval.tv_sec = 0;
2939                 its.it_interval.tv_nsec = 0;
2940                 its.it_value.tv_sec = 0;
2941                 its.it_value.tv_nsec = 0;
2942                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
2943         } else if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
2944                 input->repeat_sym = sym;
2945                 input->repeat_key = key;
2946                 input->repeat_time = time;
2947                 its.it_interval.tv_sec = 0;
2948                 its.it_interval.tv_nsec = 25 * 1000 * 1000;
2949                 its.it_value.tv_sec = 0;
2950                 its.it_value.tv_nsec = 400 * 1000 * 1000;
2951                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
2952         }
2953 }
2954
2955 static void
2956 keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
2957                           uint32_t serial, uint32_t mods_depressed,
2958                           uint32_t mods_latched, uint32_t mods_locked,
2959                           uint32_t group)
2960 {
2961         struct input *input = data;
2962         xkb_mod_mask_t mask;
2963
2964         /* If we're not using a keymap, then we don't handle PC-style modifiers */
2965         if (!input->xkb.keymap)
2966                 return;
2967
2968         xkb_state_update_mask(input->xkb.state, mods_depressed, mods_latched,
2969                               mods_locked, 0, 0, group);
2970         mask = xkb_state_serialize_mods(input->xkb.state,
2971                                         XKB_STATE_DEPRESSED |
2972                                         XKB_STATE_LATCHED);
2973         input->modifiers = 0;
2974         if (mask & input->xkb.control_mask)
2975                 input->modifiers |= MOD_CONTROL_MASK;
2976         if (mask & input->xkb.alt_mask)
2977                 input->modifiers |= MOD_ALT_MASK;
2978         if (mask & input->xkb.shift_mask)
2979                 input->modifiers |= MOD_SHIFT_MASK;
2980 }
2981
2982 static const struct wl_keyboard_listener keyboard_listener = {
2983         keyboard_handle_keymap,
2984         keyboard_handle_enter,
2985         keyboard_handle_leave,
2986         keyboard_handle_key,
2987         keyboard_handle_modifiers,
2988 };
2989
2990 static void
2991 touch_handle_down(void *data, struct wl_touch *wl_touch,
2992                   uint32_t serial, uint32_t time, struct wl_surface *surface,
2993                   int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
2994 {
2995         struct input *input = data;
2996         struct widget *widget;
2997         float sx = wl_fixed_to_double(x_w);
2998         float sy = wl_fixed_to_double(y_w);
2999
3000         input->display->serial = serial;
3001         input->touch_focus = wl_surface_get_user_data(surface);
3002         if (!input->touch_focus) {
3003                 DBG("Failed to find to touch focus for surface %p\n", surface);
3004                 return;
3005         }
3006
3007         widget = window_find_widget(input->touch_focus,
3008                                     wl_fixed_to_double(x_w),
3009                                     wl_fixed_to_double(y_w));
3010         if (widget) {
3011                 struct touch_point *tp = xmalloc(sizeof *tp);
3012                 if (tp) {
3013                         tp->id = id;
3014                         tp->widget = widget;
3015                         wl_list_insert(&input->touch_point_list, &tp->link);
3016
3017                         if (widget->touch_down_handler)
3018                                 (*widget->touch_down_handler)(widget, input,
3019                                                               serial, time, id,
3020                                                               sx, sy,
3021                                                               widget->user_data);
3022                 }
3023         }
3024 }
3025
3026 static void
3027 touch_handle_up(void *data, struct wl_touch *wl_touch,
3028                 uint32_t serial, uint32_t time, int32_t id)
3029 {
3030         struct input *input = data;
3031         struct touch_point *tp, *tmp;
3032
3033         if (!input->touch_focus) {
3034                 DBG("No touch focus found for touch up event!\n");
3035                 return;
3036         }
3037
3038         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3039                 if (tp->id != id)
3040                         continue;
3041
3042                 if (tp->widget->touch_up_handler)
3043                         (*tp->widget->touch_up_handler)(tp->widget, input, serial,
3044                                                         time, id,
3045                                                         tp->widget->user_data);
3046
3047                 wl_list_remove(&tp->link);
3048                 free(tp);
3049
3050                 return;
3051         }
3052 }
3053
3054 static void
3055 touch_handle_motion(void *data, struct wl_touch *wl_touch,
3056                     uint32_t time, int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
3057 {
3058         struct input *input = data;
3059         struct touch_point *tp;
3060         float sx = wl_fixed_to_double(x_w);
3061         float sy = wl_fixed_to_double(y_w);
3062
3063         DBG("touch_handle_motion: %i %i\n", id, wl_list_length(&input->touch_point_list));
3064
3065         if (!input->touch_focus) {
3066                 DBG("No touch focus found for touch motion event!\n");
3067                 return;
3068         }
3069
3070         wl_list_for_each(tp, &input->touch_point_list, link) {
3071                 if (tp->id != id)
3072                         continue;
3073
3074                 if (tp->widget->touch_motion_handler)
3075                         (*tp->widget->touch_motion_handler)(tp->widget, input, time,
3076                                                             id, sx, sy,
3077                                                             tp->widget->user_data);
3078                 return;
3079         }
3080 }
3081
3082 static void
3083 touch_handle_frame(void *data, struct wl_touch *wl_touch)
3084 {
3085         struct input *input = data;
3086         struct touch_point *tp, *tmp;
3087
3088         DBG("touch_handle_frame\n");
3089
3090         if (!input->touch_focus) {
3091                 DBG("No touch focus found for touch frame event!\n");
3092                 return;
3093         }
3094
3095         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3096                 if (tp->widget->touch_frame_handler)
3097                         (*tp->widget->touch_frame_handler)(tp->widget, input,
3098                                                            tp->widget->user_data);
3099
3100                 wl_list_remove(&tp->link);
3101                 free(tp);
3102         }
3103 }
3104
3105 static void
3106 touch_handle_cancel(void *data, struct wl_touch *wl_touch)
3107 {
3108         struct input *input = data;
3109         struct touch_point *tp, *tmp;
3110
3111         DBG("touch_handle_cancel\n");
3112
3113         if (!input->touch_focus) {
3114                 DBG("No touch focus found for touch cancel event!\n");
3115                 return;
3116         }
3117
3118         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3119                 if (tp->widget->touch_cancel_handler)
3120                         (*tp->widget->touch_cancel_handler)(tp->widget, input,
3121                                                             tp->widget->user_data);
3122
3123                 wl_list_remove(&tp->link);
3124                 free(tp);
3125         }
3126 }
3127
3128 static const struct wl_touch_listener touch_listener = {
3129         touch_handle_down,
3130         touch_handle_up,
3131         touch_handle_motion,
3132         touch_handle_frame,
3133         touch_handle_cancel,
3134 };
3135
3136 static void
3137 seat_handle_capabilities(void *data, struct wl_seat *seat,
3138                          enum wl_seat_capability caps)
3139 {
3140         struct input *input = data;
3141
3142         if ((caps & WL_SEAT_CAPABILITY_POINTER) && !input->pointer) {
3143                 input->pointer = wl_seat_get_pointer(seat);
3144                 wl_pointer_set_user_data(input->pointer, input);
3145                 wl_pointer_add_listener(input->pointer, &pointer_listener,
3146                                         input);
3147         } else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && input->pointer) {
3148                 wl_pointer_destroy(input->pointer);
3149                 input->pointer = NULL;
3150         }
3151
3152         if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
3153                 input->keyboard = wl_seat_get_keyboard(seat);
3154                 wl_keyboard_set_user_data(input->keyboard, input);
3155                 wl_keyboard_add_listener(input->keyboard, &keyboard_listener,
3156                                          input);
3157         } else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) {
3158                 wl_keyboard_destroy(input->keyboard);
3159                 input->keyboard = NULL;
3160         }
3161
3162         if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !input->touch) {
3163                 input->touch = wl_seat_get_touch(seat);
3164                 wl_touch_set_user_data(input->touch, input);
3165                 wl_touch_add_listener(input->touch, &touch_listener, input);
3166         } else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && input->touch) {
3167                 wl_touch_destroy(input->touch);
3168                 input->touch = NULL;
3169         }
3170 }
3171
3172 static void
3173 seat_handle_name(void *data, struct wl_seat *seat,
3174                  const char *name)
3175 {
3176
3177 }
3178
3179 static const struct wl_seat_listener seat_listener = {
3180         seat_handle_capabilities,
3181         seat_handle_name
3182 };
3183
3184 void
3185 input_get_position(struct input *input, int32_t *x, int32_t *y)
3186 {
3187         *x = input->sx;
3188         *y = input->sy;
3189 }
3190
3191 struct display *
3192 input_get_display(struct input *input)
3193 {
3194         return input->display;
3195 }
3196
3197 struct wl_seat *
3198 input_get_seat(struct input *input)
3199 {
3200         return input->seat;
3201 }
3202
3203 uint32_t
3204 input_get_modifiers(struct input *input)
3205 {
3206         return input->modifiers;
3207 }
3208
3209 struct widget *
3210 input_get_focus_widget(struct input *input)
3211 {
3212         return input->focus_widget;
3213 }
3214
3215 struct data_offer {
3216         struct wl_data_offer *offer;
3217         struct input *input;
3218         struct wl_array types;
3219         int refcount;
3220
3221         struct task io_task;
3222         int fd;
3223         data_func_t func;
3224         int32_t x, y;
3225         void *user_data;
3226 };
3227
3228 static void
3229 data_offer_offer(void *data, struct wl_data_offer *wl_data_offer, const char *type)
3230 {
3231         struct data_offer *offer = data;
3232         char **p;
3233
3234         p = wl_array_add(&offer->types, sizeof *p);
3235         *p = strdup(type);
3236 }
3237
3238 static const struct wl_data_offer_listener data_offer_listener = {
3239         data_offer_offer,
3240 };
3241
3242 static void
3243 data_offer_destroy(struct data_offer *offer)
3244 {
3245         char **p;
3246
3247         offer->refcount--;
3248         if (offer->refcount == 0) {
3249                 wl_data_offer_destroy(offer->offer);
3250                 for (p = offer->types.data; *p; p++)
3251                         free(*p);
3252                 wl_array_release(&offer->types);
3253                 free(offer);
3254         }
3255 }
3256
3257 static void
3258 data_device_data_offer(void *data,
3259                        struct wl_data_device *data_device,
3260                        struct wl_data_offer *_offer)
3261 {
3262         struct data_offer *offer;
3263
3264         offer = xmalloc(sizeof *offer);
3265
3266         wl_array_init(&offer->types);
3267         offer->refcount = 1;
3268         offer->input = data;
3269         offer->offer = _offer;
3270         wl_data_offer_add_listener(offer->offer,
3271                                    &data_offer_listener, offer);
3272 }
3273
3274 static void
3275 data_device_enter(void *data, struct wl_data_device *data_device,
3276                   uint32_t serial, struct wl_surface *surface,
3277                   wl_fixed_t x_w, wl_fixed_t y_w,
3278                   struct wl_data_offer *offer)
3279 {
3280         struct input *input = data;
3281         struct window *window;
3282         void *types_data;
3283         float x = wl_fixed_to_double(x_w);
3284         float y = wl_fixed_to_double(y_w);
3285         char **p;
3286
3287         window = wl_surface_get_user_data(surface);
3288         input->drag_enter_serial = serial;
3289         input->drag_focus = window,
3290         input->drag_x = x;
3291         input->drag_y = y;
3292
3293         if (!input->touch_grab)
3294                 input->pointer_enter_serial = serial;
3295
3296         if (offer) {
3297                 input->drag_offer = wl_data_offer_get_user_data(offer);
3298
3299                 p = wl_array_add(&input->drag_offer->types, sizeof *p);
3300                 *p = NULL;
3301
3302                 types_data = input->drag_offer->types.data;
3303         } else {
3304                 input->drag_offer = NULL;
3305                 types_data = NULL;
3306         }
3307
3308         if (window->data_handler)
3309                 window->data_handler(window, input, x, y, types_data,
3310                                      window->user_data);
3311 }
3312
3313 static void
3314 data_device_leave(void *data, struct wl_data_device *data_device)
3315 {
3316         struct input *input = data;
3317
3318         if (input->drag_offer) {
3319                 data_offer_destroy(input->drag_offer);
3320                 input->drag_offer = NULL;
3321         }
3322 }
3323
3324 static void
3325 data_device_motion(void *data, struct wl_data_device *data_device,
3326                    uint32_t time, wl_fixed_t x_w, wl_fixed_t y_w)
3327 {
3328         struct input *input = data;
3329         struct window *window = input->drag_focus;
3330         float x = wl_fixed_to_double(x_w);
3331         float y = wl_fixed_to_double(y_w);
3332         void *types_data;
3333
3334         input->drag_x = x;
3335         input->drag_y = y;
3336
3337         if (input->drag_offer)
3338                 types_data = input->drag_offer->types.data;
3339         else
3340                 types_data = NULL;
3341
3342         if (window->data_handler)
3343                 window->data_handler(window, input, x, y, types_data,
3344                                      window->user_data);
3345 }
3346
3347 static void
3348 data_device_drop(void *data, struct wl_data_device *data_device)
3349 {
3350         struct input *input = data;
3351         struct window *window = input->drag_focus;
3352         float x, y;
3353
3354         x = input->drag_x;
3355         y = input->drag_y;
3356
3357         if (window->drop_handler)
3358                 window->drop_handler(window, input,
3359                                      x, y, window->user_data);
3360
3361         if (input->touch_grab)
3362                 touch_ungrab(input);
3363 }
3364
3365 static void
3366 data_device_selection(void *data,
3367                       struct wl_data_device *wl_data_device,
3368                       struct wl_data_offer *offer)
3369 {
3370         struct input *input = data;
3371         char **p;
3372
3373         if (input->selection_offer)
3374                 data_offer_destroy(input->selection_offer);
3375
3376         if (offer) {
3377                 input->selection_offer = wl_data_offer_get_user_data(offer);
3378                 p = wl_array_add(&input->selection_offer->types, sizeof *p);
3379                 *p = NULL;
3380         } else {
3381                 input->selection_offer = NULL;
3382         }
3383 }
3384
3385 static const struct wl_data_device_listener data_device_listener = {
3386         data_device_data_offer,
3387         data_device_enter,
3388         data_device_leave,
3389         data_device_motion,
3390         data_device_drop,
3391         data_device_selection
3392 };
3393
3394 static void
3395 input_set_pointer_image_index(struct input *input, int index)
3396 {
3397         struct wl_buffer *buffer;
3398         struct wl_cursor *cursor;
3399         struct wl_cursor_image *image;
3400
3401         if (!input->pointer)
3402                 return;
3403
3404         cursor = input->display->cursors[input->current_cursor];
3405         if (!cursor)
3406                 return;
3407
3408         if (index >= (int) cursor->image_count) {
3409                 fprintf(stderr, "cursor index out of range\n");
3410                 return;
3411         }
3412
3413         image = cursor->images[index];
3414         buffer = wl_cursor_image_get_buffer(image);
3415         if (!buffer)
3416                 return;
3417
3418         wl_pointer_set_cursor(input->pointer, input->pointer_enter_serial,
3419                               input->pointer_surface,
3420                               image->hotspot_x, image->hotspot_y);
3421         wl_surface_attach(input->pointer_surface, buffer, 0, 0);
3422         wl_surface_damage(input->pointer_surface, 0, 0,
3423                           image->width, image->height);
3424         wl_surface_commit(input->pointer_surface);
3425 }
3426
3427 static const struct wl_callback_listener pointer_surface_listener;
3428
3429 static void
3430 pointer_surface_frame_callback(void *data, struct wl_callback *callback,
3431                                uint32_t time)
3432 {
3433         struct input *input = data;
3434         struct wl_cursor *cursor;
3435         int i;
3436
3437         if (callback) {
3438                 assert(callback == input->cursor_frame_cb);
3439                 wl_callback_destroy(callback);
3440                 input->cursor_frame_cb = NULL;
3441         }
3442
3443         if (!input->pointer)
3444                 return;
3445
3446         if (input->current_cursor == CURSOR_BLANK) {
3447                 wl_pointer_set_cursor(input->pointer,
3448                                       input->pointer_enter_serial,
3449                                       NULL, 0, 0);
3450                 return;
3451         }
3452
3453         if (input->current_cursor == CURSOR_UNSET)
3454                 return;
3455         cursor = input->display->cursors[input->current_cursor];
3456         if (!cursor)
3457                 return;
3458
3459         /* FIXME We don't have the current time on the first call so we set
3460          * the animation start to the time of the first frame callback. */
3461         if (time == 0)
3462                 input->cursor_anim_start = 0;
3463         else if (input->cursor_anim_start == 0)
3464                 input->cursor_anim_start = time;
3465
3466         if (time == 0 || input->cursor_anim_start == 0)
3467                 i = 0;
3468         else
3469                 i = wl_cursor_frame(cursor, time - input->cursor_anim_start);
3470
3471         if (cursor->image_count > 1) {
3472                 input->cursor_frame_cb =
3473                         wl_surface_frame(input->pointer_surface);
3474                 wl_callback_add_listener(input->cursor_frame_cb,
3475                                          &pointer_surface_listener, input);
3476         }
3477
3478         input_set_pointer_image_index(input, i);
3479 }
3480
3481 static const struct wl_callback_listener pointer_surface_listener = {
3482         pointer_surface_frame_callback
3483 };
3484
3485 void
3486 input_set_pointer_image(struct input *input, int pointer)
3487 {
3488         int force = 0;
3489
3490         if (!input->pointer)
3491                 return;
3492
3493         if (input->pointer_enter_serial > input->cursor_serial)
3494                 force = 1;
3495
3496         if (!force && pointer == input->current_cursor)
3497                 return;
3498
3499         input->current_cursor = pointer;
3500         input->cursor_serial = input->pointer_enter_serial;
3501         if (!input->cursor_frame_cb)
3502                 pointer_surface_frame_callback(input, NULL, 0);
3503         else if (force) {
3504                 /* The current frame callback may be stuck if, for instance,
3505                  * the set cursor request was processed by the server after
3506                  * this client lost the focus. In this case the cursor surface
3507                  * might not be mapped and the frame callback wouldn't ever
3508                  * complete. Send a set_cursor and attach to try to map the
3509                  * cursor surface again so that the callback will finish */
3510                 input_set_pointer_image_index(input, 0);
3511         }
3512 }
3513
3514 struct wl_data_device *
3515 input_get_data_device(struct input *input)
3516 {
3517         return input->data_device;
3518 }
3519
3520 void
3521 input_set_selection(struct input *input,
3522                     struct wl_data_source *source, uint32_t time)
3523 {
3524         wl_data_device_set_selection(input->data_device, source, time);
3525 }
3526
3527 void
3528 input_accept(struct input *input, const char *type)
3529 {
3530         wl_data_offer_accept(input->drag_offer->offer,
3531                              input->drag_enter_serial, type);
3532 }
3533
3534 static void
3535 offer_io_func(struct task *task, uint32_t events)
3536 {
3537         struct data_offer *offer =
3538                 container_of(task, struct data_offer, io_task);
3539         unsigned int len;
3540         char buffer[4096];
3541
3542         len = read(offer->fd, buffer, sizeof buffer);
3543         offer->func(buffer, len,
3544                     offer->x, offer->y, offer->user_data);
3545
3546         if (len == 0) {
3547                 close(offer->fd);
3548                 data_offer_destroy(offer);
3549         }
3550 }
3551
3552 static void
3553 data_offer_receive_data(struct data_offer *offer, const char *mime_type,
3554                         data_func_t func, void *user_data)
3555 {
3556         int p[2];
3557
3558         if (pipe2(p, O_CLOEXEC) == -1)
3559                 return;
3560
3561         wl_data_offer_receive(offer->offer, mime_type, p[1]);
3562         close(p[1]);
3563
3564         offer->io_task.run = offer_io_func;
3565         offer->fd = p[0];
3566         offer->func = func;
3567         offer->refcount++;
3568         offer->user_data = user_data;
3569
3570         display_watch_fd(offer->input->display,
3571                          offer->fd, EPOLLIN, &offer->io_task);
3572 }
3573
3574 void
3575 input_receive_drag_data(struct input *input, const char *mime_type,
3576                         data_func_t func, void *data)
3577 {
3578         data_offer_receive_data(input->drag_offer, mime_type, func, data);
3579         input->drag_offer->x = input->drag_x;
3580         input->drag_offer->y = input->drag_y;
3581 }
3582
3583 int
3584 input_receive_drag_data_to_fd(struct input *input,
3585                               const char *mime_type, int fd)
3586 {
3587         if (input->drag_offer)
3588                 wl_data_offer_receive(input->drag_offer->offer, mime_type, fd);
3589
3590         return 0;
3591 }
3592
3593 int
3594 input_receive_selection_data(struct input *input, const char *mime_type,
3595                              data_func_t func, void *data)
3596 {
3597         char **p;
3598
3599         if (input->selection_offer == NULL)
3600                 return -1;
3601
3602         for (p = input->selection_offer->types.data; *p; p++)
3603                 if (strcmp(mime_type, *p) == 0)
3604                         break;
3605
3606         if (*p == NULL)
3607                 return -1;
3608
3609         data_offer_receive_data(input->selection_offer,
3610                                 mime_type, func, data);
3611         return 0;
3612 }
3613
3614 int
3615 input_receive_selection_data_to_fd(struct input *input,
3616                                    const char *mime_type, int fd)
3617 {
3618         if (input->selection_offer)
3619                 wl_data_offer_receive(input->selection_offer->offer,
3620                                       mime_type, fd);
3621
3622         return 0;
3623 }
3624
3625 void
3626 window_move(struct window *window, struct input *input, uint32_t serial)
3627 {
3628         if (!window->shell_surface)
3629                 return;
3630
3631         wl_shell_surface_move(window->shell_surface, input->seat, serial);
3632 }
3633
3634 static void
3635 surface_set_synchronized(struct surface *surface)
3636 {
3637         if (!surface->subsurface)
3638                 return;
3639
3640         if (surface->synchronized)
3641                 return;
3642
3643         wl_subsurface_set_sync(surface->subsurface);
3644         surface->synchronized = 1;
3645 }
3646
3647 static void
3648 surface_set_synchronized_default(struct surface *surface)
3649 {
3650         if (!surface->subsurface)
3651                 return;
3652
3653         if (surface->synchronized == surface->synchronized_default)
3654                 return;
3655
3656         if (surface->synchronized_default)
3657                 wl_subsurface_set_sync(surface->subsurface);
3658         else
3659                 wl_subsurface_set_desync(surface->subsurface);
3660
3661         surface->synchronized = surface->synchronized_default;
3662 }
3663
3664 static void
3665 surface_resize(struct surface *surface)
3666 {
3667         struct widget *widget = surface->widget;
3668         struct wl_compositor *compositor = widget->window->display->compositor;
3669
3670         if (surface->input_region) {
3671                 wl_region_destroy(surface->input_region);
3672                 surface->input_region = NULL;
3673         }
3674
3675         if (surface->opaque_region)
3676                 wl_region_destroy(surface->opaque_region);
3677
3678         surface->opaque_region = wl_compositor_create_region(compositor);
3679
3680         if (widget->resize_handler)
3681                 widget->resize_handler(widget,
3682                                        widget->allocation.width,
3683                                        widget->allocation.height,
3684                                        widget->user_data);
3685
3686         if (surface->subsurface &&
3687             (surface->allocation.x != widget->allocation.x ||
3688              surface->allocation.y != widget->allocation.y)) {
3689                 wl_subsurface_set_position(surface->subsurface,
3690                                            widget->allocation.x,
3691                                            widget->allocation.y);
3692         }
3693         if (surface->allocation.width != widget->allocation.width ||
3694             surface->allocation.height != widget->allocation.height) {
3695                 window_schedule_redraw(widget->window);
3696         }
3697         surface->allocation = widget->allocation;
3698
3699         if (widget->opaque)
3700                 wl_region_add(surface->opaque_region, 0, 0,
3701                               widget->allocation.width,
3702                               widget->allocation.height);
3703 }
3704
3705 static void
3706 hack_prevent_EGL_sub_surface_deadlock(struct window *window)
3707 {
3708         /*
3709          * This hack should be removed, when EGL respects
3710          * eglSwapInterval(0).
3711          *
3712          * If this window has sub-surfaces, especially a free-running
3713          * EGL-widget, we need to post the parent surface once with
3714          * all the old state to guarantee, that the EGL-widget will
3715          * receive its frame callback soon. Otherwise, a forced call
3716          * to eglSwapBuffers may end up blocking, waiting for a frame
3717          * event that will never come, because we will commit the parent
3718          * surface with all new state only after eglSwapBuffers returns.
3719          *
3720          * This assumes, that:
3721          * 1. When the EGL widget's resize hook is called, it pauses.
3722          * 2. When the EGL widget's redraw hook is called, it forces a
3723          *    repaint and a call to eglSwapBuffers(), and maybe resumes.
3724          * In a single threaded application condition 1 is a no-op.
3725          *
3726          * XXX: This should actually be after the surface_resize() calls,
3727          * but cannot, because then it would commit the incomplete state
3728          * accumulated from the widget resize hooks.
3729          */
3730         if (window->subsurface_list.next != &window->main_surface->link ||
3731             window->subsurface_list.prev != &window->main_surface->link)
3732                 wl_surface_commit(window->main_surface->surface);
3733 }
3734
3735 static void
3736 window_do_resize(struct window *window)
3737 {
3738         struct surface *surface;
3739
3740         widget_set_allocation(window->main_surface->widget,
3741                               window->pending_allocation.x,
3742                               window->pending_allocation.y,
3743                               window->pending_allocation.width,
3744                               window->pending_allocation.height);
3745
3746         surface_resize(window->main_surface);
3747
3748         /* The main surface is in the list, too. Main surface's
3749          * resize_handler is responsible for calling widget_set_allocation()
3750          * on all sub-surface root widgets, so they will be resized
3751          * properly.
3752          */
3753         wl_list_for_each(surface, &window->subsurface_list, link) {
3754                 if (surface == window->main_surface)
3755                         continue;
3756
3757                 surface_set_synchronized(surface);
3758                 surface_resize(surface);
3759         }
3760 }
3761
3762 static void
3763 idle_resize(struct window *window)
3764 {
3765         window->resize_needed = 0;
3766         window->redraw_needed = 1;
3767
3768         DBG("from %dx%d to %dx%d\n",
3769             window->main_surface->server_allocation.width,
3770             window->main_surface->server_allocation.height,
3771             window->pending_allocation.width,
3772             window->pending_allocation.height);
3773
3774         hack_prevent_EGL_sub_surface_deadlock(window);
3775
3776         window_do_resize(window);
3777 }
3778
3779 static void
3780 undo_resize(struct window *window)
3781 {
3782         window->pending_allocation.width =
3783                 window->main_surface->server_allocation.width;
3784         window->pending_allocation.height =
3785                 window->main_surface->server_allocation.height;
3786
3787         DBG("back to %dx%d\n",
3788             window->main_surface->server_allocation.width,
3789             window->main_surface->server_allocation.height);
3790
3791         window_do_resize(window);
3792
3793         if (window->pending_allocation.width == 0 &&
3794             window->pending_allocation.height == 0) {
3795                 fprintf(stderr, "Error: Could not draw a surface, "
3796                         "most likely due to insufficient disk space in "
3797                         "%s (XDG_RUNTIME_DIR).\n", getenv("XDG_RUNTIME_DIR"));
3798                 exit(EXIT_FAILURE);
3799         }
3800 }
3801
3802 void
3803 window_schedule_resize(struct window *window, int width, int height)
3804 {
3805         /* We should probably get these numbers from the theme. */
3806         const int min_width = 200, min_height = 200;
3807
3808         window->pending_allocation.x = 0;
3809         window->pending_allocation.y = 0;
3810         window->pending_allocation.width = width;
3811         window->pending_allocation.height = height;
3812
3813         if (window->min_allocation.width == 0) {
3814                 if (width < min_width && window->frame)
3815                         window->min_allocation.width = min_width;
3816                 else
3817                         window->min_allocation.width = width;
3818                 if (height < min_height && window->frame)
3819                         window->min_allocation.height = min_height;
3820                 else
3821                         window->min_allocation.height = height;
3822         }
3823
3824         if (window->pending_allocation.width < window->min_allocation.width)
3825                 window->pending_allocation.width = window->min_allocation.width;
3826         if (window->pending_allocation.height < window->min_allocation.height)
3827                 window->pending_allocation.height = window->min_allocation.height;
3828
3829         window->resize_needed = 1;
3830         window_schedule_redraw(window);
3831 }
3832
3833 void
3834 widget_schedule_resize(struct widget *widget, int32_t width, int32_t height)
3835 {
3836         window_schedule_resize(widget->window, width, height);
3837 }
3838
3839 static void
3840 handle_ping(void *data, struct wl_shell_surface *shell_surface,
3841                                                         uint32_t serial)
3842 {
3843         wl_shell_surface_pong(shell_surface, serial);
3844 }
3845
3846 static void
3847 handle_configure(void *data, struct wl_shell_surface *shell_surface,
3848                  uint32_t edges, int32_t width, int32_t height)
3849 {
3850         struct window *window = data;
3851
3852         window->resize_edges = edges;
3853         window_schedule_resize(window, width, height);
3854 }
3855
3856 static void
3857 menu_destroy(struct menu *menu)
3858 {
3859         widget_destroy(menu->widget);
3860         window_destroy(menu->window);
3861         frame_destroy(menu->frame);
3862         free(menu);
3863 }
3864
3865 static void
3866 handle_popup_done(void *data, struct wl_shell_surface *shell_surface)
3867 {
3868         struct window *window = data;
3869         struct menu *menu = window->main_surface->widget->user_data;
3870
3871         /* FIXME: Need more context in this event, at least the input
3872          * device.  Or just use wl_callback.  And this really needs to
3873          * be a window vfunc that the menu can set.  And we need the
3874          * time. */
3875
3876         input_ungrab(menu->input);
3877         menu_destroy(menu);
3878 }
3879
3880 static const struct wl_shell_surface_listener shell_surface_listener = {
3881         handle_ping,
3882         handle_configure,
3883         handle_popup_done
3884 };
3885
3886 void
3887 window_get_allocation(struct window *window,
3888                       struct rectangle *allocation)
3889 {
3890         *allocation = window->main_surface->allocation;
3891 }
3892
3893 static void
3894 widget_redraw(struct widget *widget)
3895 {
3896         struct widget *child;
3897
3898         if (widget->redraw_handler)
3899                 widget->redraw_handler(widget, widget->user_data);
3900         wl_list_for_each(child, &widget->child_list, link)
3901                 widget_redraw(child);
3902 }
3903
3904 static void
3905 frame_callback(void *data, struct wl_callback *callback, uint32_t time)
3906 {
3907         struct surface *surface = data;
3908
3909         assert(callback == surface->frame_cb);
3910         DBG_OBJ(callback, "done\n");
3911         wl_callback_destroy(callback);
3912         surface->frame_cb = NULL;
3913
3914         surface->last_time = time;
3915
3916         if (surface->redraw_needed || surface->window->redraw_needed) {
3917                 DBG_OBJ(surface->surface, "window_schedule_redraw_task\n");
3918                 window_schedule_redraw_task(surface->window);
3919         }
3920 }
3921
3922 static const struct wl_callback_listener listener = {
3923         frame_callback
3924 };
3925
3926 static int
3927 surface_redraw(struct surface *surface)
3928 {
3929         DBG_OBJ(surface->surface, "begin\n");
3930
3931         if (!surface->window->redraw_needed && !surface->redraw_needed)
3932                 return 0;
3933
3934         /* Whole-window redraw forces a redraw even if the previous has
3935          * not yet hit the screen.
3936          */
3937         if (surface->frame_cb) {
3938                 if (!surface->window->redraw_needed)
3939                         return 0;
3940
3941                 DBG_OBJ(surface->frame_cb, "cancelled\n");
3942                 wl_callback_destroy(surface->frame_cb);
3943         }
3944
3945         if (!widget_get_cairo_surface(surface->widget)) {
3946                 DBG_OBJ(surface->surface, "cancelled due buffer failure\n");
3947                 return -1;
3948         }
3949
3950         surface->frame_cb = wl_surface_frame(surface->surface);
3951         wl_callback_add_listener(surface->frame_cb, &listener, surface);
3952         DBG_OBJ(surface->frame_cb, "new\n");
3953
3954         surface->redraw_needed = 0;
3955         DBG_OBJ(surface->surface, "-> widget_redraw\n");
3956         widget_redraw(surface->widget);
3957         DBG_OBJ(surface->surface, "done\n");
3958         return 0;
3959 }
3960
3961 static void
3962 idle_redraw(struct task *task, uint32_t events)
3963 {
3964         struct window *window = container_of(task, struct window, redraw_task);
3965         struct surface *surface;
3966         int failed = 0;
3967         int resized = 0;
3968
3969         DBG(" --------- \n");
3970
3971         wl_list_init(&window->redraw_task.link);
3972         window->redraw_task_scheduled = 0;
3973
3974         if (window->resize_needed) {
3975                 /* throttle resizing to the main surface display */
3976                 if (window->main_surface->frame_cb) {
3977                         DBG_OBJ(window->main_surface->frame_cb, "pending\n");
3978                         return;
3979                 }
3980
3981                 idle_resize(window);
3982                 resized = 1;
3983         }
3984
3985         if (surface_redraw(window->main_surface) < 0) {
3986                 /*
3987                  * Only main_surface failure will cause us to undo the resize.
3988                  * If sub-surfaces fail, they will just be broken with old
3989                  * content.
3990                  */
3991                 failed = 1;
3992         } else {
3993                 wl_list_for_each(surface, &window->subsurface_list, link) {
3994                         if (surface == window->main_surface)
3995                                 continue;
3996
3997                         surface_redraw(surface);
3998                 }
3999         }
4000
4001         window->redraw_needed = 0;
4002         window_flush(window);
4003
4004         wl_list_for_each(surface, &window->subsurface_list, link)
4005                 surface_set_synchronized_default(surface);
4006
4007         if (resized && failed) {
4008                 /* Restore widget tree to correspond to what is on screen. */
4009                 undo_resize(window);
4010         }
4011 }
4012
4013 static void
4014 window_schedule_redraw_task(struct window *window)
4015 {
4016         if (window->configure_requests)
4017                 return;
4018         if (!window->redraw_task_scheduled) {
4019                 window->redraw_task.run = idle_redraw;
4020                 display_defer(window->display, &window->redraw_task);
4021                 window->redraw_task_scheduled = 1;
4022         }
4023 }
4024
4025 void
4026 window_schedule_redraw(struct window *window)
4027 {
4028         struct surface *surface;
4029
4030         DBG_OBJ(window->main_surface->surface, "window %p\n", window);
4031
4032         wl_list_for_each(surface, &window->subsurface_list, link)
4033                 surface->redraw_needed = 1;
4034
4035         window_schedule_redraw_task(window);
4036 }
4037
4038 int
4039 window_is_fullscreen(struct window *window)
4040 {
4041         return window->type == TYPE_FULLSCREEN;
4042 }
4043
4044 int
4045 window_is_transient(struct window *window)
4046 {
4047         return window->type == TYPE_TRANSIENT;
4048 }
4049
4050 static void
4051 configure_request_completed(void *data, struct wl_callback *callback, uint32_t  time)
4052 {
4053         struct window *window = data;
4054
4055         wl_callback_destroy(callback);
4056         window->configure_requests--;
4057
4058         if (!window->configure_requests)
4059                 window_schedule_redraw(window);
4060 }
4061
4062 static struct wl_callback_listener configure_request_listener = {
4063         configure_request_completed,
4064 };
4065
4066 static void
4067 window_defer_redraw_until_configure(struct window* window)
4068 {
4069         struct wl_callback *callback;
4070
4071         if (window->redraw_task_scheduled) {
4072                 wl_list_remove(&window->redraw_task.link);
4073                 window->redraw_task_scheduled = 0;
4074         }
4075
4076         callback = wl_display_sync(window->display->display);
4077         wl_callback_add_listener(callback, &configure_request_listener, window);
4078         window->configure_requests++;
4079 }
4080
4081 void
4082 window_set_fullscreen(struct window *window, int fullscreen)
4083 {
4084         if (!window->display->shell)
4085                 return;
4086
4087         if ((window->type == TYPE_FULLSCREEN) == fullscreen)
4088                 return;
4089
4090         if (fullscreen) {
4091                 window->saved_type = window->type;
4092                 if (window->type == TYPE_TOPLEVEL) {
4093                         window->saved_allocation = window->main_surface->allocation;
4094                 }
4095                 window->type = TYPE_FULLSCREEN;
4096                 wl_shell_surface_set_fullscreen(window->shell_surface,
4097                                                 window->fullscreen_method,
4098                                                 0, NULL);
4099                 window_defer_redraw_until_configure (window);
4100         } else {
4101                 if (window->saved_type == TYPE_MAXIMIZED) {
4102                         window_set_maximized(window, 1);
4103                 } else {
4104                         window->type = TYPE_TOPLEVEL;
4105                         wl_shell_surface_set_toplevel(window->shell_surface);
4106                         window_schedule_resize(window,
4107                                                    window->saved_allocation.width,
4108                                                    window->saved_allocation.height);
4109                 }
4110
4111         }
4112 }
4113
4114 void
4115 window_set_fullscreen_method(struct window *window,
4116                              enum wl_shell_surface_fullscreen_method method)
4117 {
4118         window->fullscreen_method = method;
4119 }
4120
4121 int
4122 window_is_maximized(struct window *window)
4123 {
4124         return window->type == TYPE_MAXIMIZED;
4125 }
4126
4127 void
4128 window_set_maximized(struct window *window, int maximized)
4129 {
4130         if (!window->display->shell)
4131                 return;
4132
4133         if ((window->type == TYPE_MAXIMIZED) == maximized)
4134                 return;
4135
4136         if (window->type == TYPE_TOPLEVEL) {
4137                 window->saved_allocation = window->main_surface->allocation;
4138                 wl_shell_surface_set_maximized(window->shell_surface, NULL);
4139                 window->type = TYPE_MAXIMIZED;
4140                 window_defer_redraw_until_configure(window);
4141         } else if (window->type == TYPE_FULLSCREEN) {
4142                 wl_shell_surface_set_maximized(window->shell_surface, NULL);
4143                 window->type = TYPE_MAXIMIZED;
4144                 window_defer_redraw_until_configure(window);
4145         } else {
4146                 wl_shell_surface_set_toplevel(window->shell_surface);
4147                 window->type = TYPE_TOPLEVEL;
4148                 window_schedule_resize(window,
4149                                        window->saved_allocation.width,
4150                                        window->saved_allocation.height);
4151         }
4152 }
4153
4154 void
4155 window_set_user_data(struct window *window, void *data)
4156 {
4157         window->user_data = data;
4158 }
4159
4160 void *
4161 window_get_user_data(struct window *window)
4162 {
4163         return window->user_data;
4164 }
4165
4166 void
4167 window_set_key_handler(struct window *window,
4168                        window_key_handler_t handler)
4169 {
4170         window->key_handler = handler;
4171 }
4172
4173 void
4174 window_set_keyboard_focus_handler(struct window *window,
4175                                   window_keyboard_focus_handler_t handler)
4176 {
4177         window->keyboard_focus_handler = handler;
4178 }
4179
4180 void
4181 window_set_data_handler(struct window *window, window_data_handler_t handler)
4182 {
4183         window->data_handler = handler;
4184 }
4185
4186 void
4187 window_set_drop_handler(struct window *window, window_drop_handler_t handler)
4188 {
4189         window->drop_handler = handler;
4190 }
4191
4192 void
4193 window_set_close_handler(struct window *window,
4194                          window_close_handler_t handler)
4195 {
4196         window->close_handler = handler;
4197 }
4198
4199 void
4200 window_set_fullscreen_handler(struct window *window,
4201                               window_fullscreen_handler_t handler)
4202 {
4203         window->fullscreen_handler = handler;
4204 }
4205
4206 void
4207 window_set_output_handler(struct window *window,
4208                           window_output_handler_t handler)
4209 {
4210         window->output_handler = handler;
4211 }
4212
4213 void
4214 window_set_title(struct window *window, const char *title)
4215 {
4216         free(window->title);
4217         window->title = strdup(title);
4218         if (window->frame) {
4219                 frame_set_title(window->frame->frame, title);
4220                 widget_schedule_redraw(window->frame->widget);
4221         }
4222         if (window->shell_surface)
4223                 wl_shell_surface_set_title(window->shell_surface, title);
4224 }
4225
4226 const char *
4227 window_get_title(struct window *window)
4228 {
4229         return window->title;
4230 }
4231
4232 void
4233 window_set_text_cursor_position(struct window *window, int32_t x, int32_t y)
4234 {
4235         struct text_cursor_position *text_cursor_position =
4236                                         window->display->text_cursor_position;
4237
4238         if (!text_cursor_position)
4239                 return;
4240
4241         text_cursor_position_notify(text_cursor_position,
4242                                     window->main_surface->surface,
4243                                     wl_fixed_from_int(x),
4244                                     wl_fixed_from_int(y));
4245 }
4246
4247 void
4248 window_damage(struct window *window, int32_t x, int32_t y,
4249               int32_t width, int32_t height)
4250 {
4251         wl_surface_damage(window->main_surface->surface, x, y, width, height);
4252 }
4253
4254 static void
4255 surface_enter(void *data,
4256               struct wl_surface *wl_surface, struct wl_output *wl_output)
4257 {
4258         struct window *window = data;
4259         struct output *output;
4260         struct output *output_found = NULL;
4261         struct window_output *window_output;
4262
4263         wl_list_for_each(output, &window->display->output_list, link) {
4264                 if (output->output == wl_output) {
4265                         output_found = output;
4266                         break;
4267                 }
4268         }
4269
4270         if (!output_found)
4271                 return;
4272
4273         window_output = xmalloc(sizeof *window_output);
4274         window_output->output = output_found;
4275
4276         wl_list_insert (&window->window_output_list, &window_output->link);
4277
4278         if (window->output_handler)
4279                 window->output_handler(window, output_found, 1,
4280                                        window->user_data);
4281 }
4282
4283 static void
4284 surface_leave(void *data,
4285               struct wl_surface *wl_surface, struct wl_output *output)
4286 {
4287         struct window *window = data;
4288         struct window_output *window_output;
4289         struct window_output *window_output_found = NULL;
4290
4291         wl_list_for_each(window_output, &window->window_output_list, link) {
4292                 if (window_output->output->output == output) {
4293                         window_output_found = window_output;
4294                         break;
4295                 }
4296         }
4297
4298         if (window_output_found) {
4299                 wl_list_remove(&window_output_found->link);
4300
4301                 if (window->output_handler)
4302                         window->output_handler(window, window_output->output,
4303                                                0, window->user_data);
4304
4305                 free(window_output_found);
4306         }
4307 }
4308
4309 static const struct wl_surface_listener surface_listener = {
4310         surface_enter,
4311         surface_leave
4312 };
4313
4314 static struct surface *
4315 surface_create(struct window *window)
4316 {
4317         struct display *display = window->display;
4318         struct surface *surface;
4319
4320         surface = xmalloc(sizeof *surface);
4321         memset(surface, 0, sizeof *surface);
4322         if (!surface)
4323                 return NULL;
4324
4325         surface->window = window;
4326         surface->surface = wl_compositor_create_surface(display->compositor);
4327         surface->buffer_scale = 1;
4328         wl_surface_add_listener(surface->surface, &surface_listener, window);
4329
4330         wl_list_insert(&window->subsurface_list, &surface->link);
4331
4332         return surface;
4333 }
4334
4335 static struct window *
4336 window_create_internal(struct display *display, int type)
4337 {
4338         struct window *window;
4339         struct surface *surface;
4340
4341         window = xzalloc(sizeof *window);
4342         wl_list_init(&window->subsurface_list);
4343         window->display = display;
4344
4345         surface = surface_create(window);
4346         window->main_surface = surface;
4347
4348         if (type != TYPE_CUSTOM && display->shell) {
4349                 window->shell_surface =
4350                         wl_shell_get_shell_surface(display->shell,
4351                                                    surface->surface);
4352                 fail_on_null(window->shell_surface);
4353         }
4354
4355         window->type = type;
4356         window->fullscreen_method = WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT;
4357         window->configure_requests = 0;
4358         window->preferred_format = WINDOW_PREFERRED_FORMAT_NONE;
4359
4360         if (display->argb_device)
4361 #ifdef HAVE_CAIRO_EGL
4362                 surface->buffer_type = WINDOW_BUFFER_TYPE_EGL_WINDOW;
4363 #else
4364                 surface->buffer_type = WINDOW_BUFFER_TYPE_SHM;
4365 #endif
4366         else
4367                 surface->buffer_type = WINDOW_BUFFER_TYPE_SHM;
4368
4369         wl_surface_set_user_data(surface->surface, window);
4370         wl_list_insert(display->window_list.prev, &window->link);
4371         wl_list_init(&window->redraw_task.link);
4372
4373         if (window->shell_surface) {
4374                 wl_shell_surface_set_user_data(window->shell_surface, window);
4375                 wl_shell_surface_add_listener(window->shell_surface,
4376                                               &shell_surface_listener, window);
4377         }
4378
4379         wl_list_init (&window->window_output_list);
4380
4381         return window;
4382 }
4383
4384 struct window *
4385 window_create(struct display *display)
4386 {
4387         return window_create_internal(display, TYPE_NONE);
4388 }
4389
4390 struct window *
4391 window_create_custom(struct display *display)
4392 {
4393         return window_create_internal(display, TYPE_CUSTOM);
4394 }
4395
4396 struct window *
4397 window_create_transient(struct display *display, struct window *parent,
4398                         int32_t x, int32_t y, uint32_t flags)
4399 {
4400         struct window *window;
4401
4402         window = window_create_internal(parent->display, TYPE_TRANSIENT);
4403
4404         window->x = x;
4405         window->y = y;
4406
4407         if (display->shell)
4408                 wl_shell_surface_set_transient(
4409                         window->shell_surface,
4410                         parent->main_surface->surface,
4411                         window->x, window->y, flags);
4412
4413         return window;
4414 }
4415
4416 static void
4417 menu_set_item(struct menu *menu, int sy)
4418 {
4419         int32_t x, y, width, height;
4420         int next;
4421
4422         frame_interior(menu->frame, &x, &y, &width, &height);
4423         next = (sy - y) / 20;
4424         if (menu->current != next) {
4425                 menu->current = next;
4426                 widget_schedule_redraw(menu->widget);
4427         }
4428 }
4429
4430 static int
4431 menu_motion_handler(struct widget *widget,
4432                     struct input *input, uint32_t time,
4433                     float x, float y, void *data)
4434 {
4435         struct menu *menu = data;
4436
4437         if (widget == menu->widget)
4438                 menu_set_item(data, y);
4439
4440         return CURSOR_LEFT_PTR;
4441 }
4442
4443 static int
4444 menu_enter_handler(struct widget *widget,
4445                    struct input *input, float x, float y, void *data)
4446 {
4447         struct menu *menu = data;
4448
4449         if (widget == menu->widget)
4450                 menu_set_item(data, y);
4451
4452         return CURSOR_LEFT_PTR;
4453 }
4454
4455 static void
4456 menu_leave_handler(struct widget *widget, struct input *input, void *data)
4457 {
4458         struct menu *menu = data;
4459
4460         if (widget == menu->widget)
4461                 menu_set_item(data, -200);
4462 }
4463
4464 static void
4465 menu_button_handler(struct widget *widget,
4466                     struct input *input, uint32_t time,
4467                     uint32_t button, enum wl_pointer_button_state state,
4468                     void *data)
4469
4470 {
4471         struct menu *menu = data;
4472
4473         if (state == WL_POINTER_BUTTON_STATE_RELEASED &&
4474             (menu->release_count > 0 || time - menu->time > 500)) {
4475                 /* Either relase after press-drag-release or
4476                  * click-motion-click. */
4477                 menu->func(menu->parent, input,
4478                            menu->current, menu->parent->user_data);
4479                 input_ungrab(input);
4480                 menu_destroy(menu);
4481         } else if (state == WL_POINTER_BUTTON_STATE_RELEASED) {
4482                 menu->release_count++;
4483         }
4484 }
4485
4486 static void
4487 menu_redraw_handler(struct widget *widget, void *data)
4488 {
4489         cairo_t *cr;
4490         struct menu *menu = data;
4491         int32_t x, y, width, height, i;
4492
4493         cr = widget_cairo_create(widget);
4494
4495         frame_repaint(menu->frame, cr);
4496         frame_interior(menu->frame, &x, &y, &width, &height);
4497
4498         theme_set_background_source(menu->window->display->theme,
4499                                     cr, THEME_FRAME_ACTIVE);
4500         cairo_rectangle(cr, x, y, width, height);
4501         cairo_fill(cr);
4502
4503         cairo_select_font_face(cr, "sans",
4504                                CAIRO_FONT_SLANT_NORMAL,
4505                                CAIRO_FONT_WEIGHT_NORMAL);
4506         cairo_set_font_size(cr, 12);
4507
4508         for (i = 0; i < menu->count; i++) {
4509                 if (i == menu->current) {
4510                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
4511                         cairo_rectangle(cr, x, y + i * 20, width, 20);
4512                         cairo_fill(cr);
4513                         cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
4514                         cairo_move_to(cr, x + 10, y + i * 20 + 16);
4515                         cairo_show_text(cr, menu->entries[i]);
4516                 } else {
4517                         cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
4518                         cairo_move_to(cr, x + 10, y + i * 20 + 16);
4519                         cairo_show_text(cr, menu->entries[i]);
4520                 }
4521         }
4522
4523         cairo_destroy(cr);
4524 }
4525
4526 void
4527 window_show_menu(struct display *display,
4528                  struct input *input, uint32_t time, struct window *parent,
4529                  int32_t x, int32_t y,
4530                  menu_func_t func, const char **entries, int count)
4531 {
4532         struct window *window;
4533         struct menu *menu;
4534         int32_t ix, iy;
4535
4536         menu = malloc(sizeof *menu);
4537         if (!menu)
4538                 return;
4539
4540         window = window_create_internal(parent->display, TYPE_MENU);
4541         if (!window) {
4542                 free(menu);
4543                 return;
4544         }
4545
4546         menu->window = window;
4547         menu->parent = parent;
4548         menu->widget = window_add_widget(menu->window, menu);
4549         window_set_buffer_scale (menu->window, window_get_buffer_scale (parent));
4550         window_set_buffer_transform (menu->window, window_get_buffer_transform (parent));
4551         menu->frame = frame_create(window->display->theme, 0, 0,
4552                                    FRAME_BUTTON_NONE, NULL);
4553         menu->entries = entries;
4554         menu->count = count;
4555         menu->release_count = 0;
4556         menu->current = -1;
4557         menu->time = time;
4558         menu->func = func;
4559         menu->input = input;
4560         window->type = TYPE_MENU;
4561         window->x = x;
4562         window->y = y;
4563
4564         input_ungrab(input);
4565
4566         widget_set_redraw_handler(menu->widget, menu_redraw_handler);
4567         widget_set_enter_handler(menu->widget, menu_enter_handler);
4568         widget_set_leave_handler(menu->widget, menu_leave_handler);
4569         widget_set_motion_handler(menu->widget, menu_motion_handler);
4570         widget_set_button_handler(menu->widget, menu_button_handler);
4571
4572         input_grab(input, menu->widget, 0);
4573         frame_resize_inside(menu->frame, 200, count * 20);
4574         frame_set_flag(menu->frame, FRAME_FLAG_ACTIVE);
4575         window_schedule_resize(window, frame_width(menu->frame),
4576                                frame_height(menu->frame));
4577
4578         frame_interior(menu->frame, &ix, &iy, NULL, NULL);
4579         wl_shell_surface_set_popup(window->shell_surface, input->seat,
4580                                    display_get_serial(window->display),
4581                                    parent->main_surface->surface,
4582                                    window->x - ix, window->y - iy, 0);
4583 }
4584
4585 void
4586 window_set_buffer_type(struct window *window, enum window_buffer_type type)
4587 {
4588         window->main_surface->buffer_type = type;
4589 }
4590
4591 void
4592 window_set_preferred_format(struct window *window,
4593                             enum preferred_format format)
4594 {
4595         window->preferred_format = format;
4596 }
4597
4598 struct widget *
4599 window_add_subsurface(struct window *window, void *data,
4600                       enum subsurface_mode default_mode)
4601 {
4602         struct widget *widget;
4603         struct surface *surface;
4604         struct wl_surface *parent;
4605         struct wl_subcompositor *subcompo = window->display->subcompositor;
4606
4607         surface = surface_create(window);
4608         widget = widget_create(window, surface, data);
4609         wl_list_init(&widget->link);
4610         surface->widget = widget;
4611
4612         parent = window->main_surface->surface;
4613         surface->subsurface = wl_subcompositor_get_subsurface(subcompo,
4614                                                               surface->surface,
4615                                                               parent);
4616         surface->synchronized = 1;
4617
4618         switch (default_mode) {
4619         case SUBSURFACE_SYNCHRONIZED:
4620                 surface->synchronized_default = 1;
4621                 break;
4622         case SUBSURFACE_DESYNCHRONIZED:
4623                 surface->synchronized_default = 0;
4624                 break;
4625         default:
4626                 assert(!"bad enum subsurface_mode");
4627         }
4628
4629         return widget;
4630 }
4631
4632 static void
4633 display_handle_geometry(void *data,
4634                         struct wl_output *wl_output,
4635                         int x, int y,
4636                         int physical_width,
4637                         int physical_height,
4638                         int subpixel,
4639                         const char *make,
4640                         const char *model,
4641                         int transform)
4642 {
4643         struct output *output = data;
4644
4645         output->allocation.x = x;
4646         output->allocation.y = y;
4647         output->transform = transform;
4648 }
4649
4650 static void
4651 display_handle_done(void *data,
4652                      struct wl_output *wl_output)
4653 {
4654 }
4655
4656 static void
4657 display_handle_scale(void *data,
4658                      struct wl_output *wl_output,
4659                      int32_t scale)
4660 {
4661         struct output *output = data;
4662
4663         output->scale = scale;
4664 }
4665
4666 static void
4667 display_handle_mode(void *data,
4668                     struct wl_output *wl_output,
4669                     uint32_t flags,
4670                     int width,
4671                     int height,
4672                     int refresh)
4673 {
4674         struct output *output = data;
4675         struct display *display = output->display;
4676
4677         if (flags & WL_OUTPUT_MODE_CURRENT) {
4678                 output->allocation.width = width;
4679                 output->allocation.height = height;
4680                 if (display->output_configure_handler)
4681                         (*display->output_configure_handler)(
4682                                                 output, display->user_data);
4683         }
4684 }
4685
4686 static const struct wl_output_listener output_listener = {
4687         display_handle_geometry,
4688         display_handle_mode,
4689         display_handle_done,
4690         display_handle_scale
4691 };
4692
4693 static void
4694 display_add_output(struct display *d, uint32_t id)
4695 {
4696         struct output *output;
4697
4698         output = xzalloc(sizeof *output);
4699         output->display = d;
4700         output->scale = 1;
4701         output->output =
4702                 wl_registry_bind(d->registry, id, &wl_output_interface, 2);
4703         output->server_output_id = id;
4704         wl_list_insert(d->output_list.prev, &output->link);
4705
4706         wl_output_add_listener(output->output, &output_listener, output);
4707 }
4708
4709 static void
4710 output_destroy(struct output *output)
4711 {
4712         if (output->destroy_handler)
4713                 (*output->destroy_handler)(output, output->user_data);
4714
4715         wl_output_destroy(output->output);
4716         wl_list_remove(&output->link);
4717         free(output);
4718 }
4719
4720 static void
4721 display_destroy_output(struct display *d, uint32_t id)
4722 {
4723         struct output *output;
4724
4725         wl_list_for_each(output, &d->output_list, link) {
4726                 if (output->server_output_id == id) {
4727                         output_destroy(output);
4728                         break;
4729                 }
4730         }
4731 }
4732
4733 void
4734 display_set_global_handler(struct display *display,
4735                            display_global_handler_t handler)
4736 {
4737         struct global *global;
4738
4739         display->global_handler = handler;
4740         if (!handler)
4741                 return;
4742
4743         wl_list_for_each(global, &display->global_list, link)
4744                 display->global_handler(display,
4745                                         global->name, global->interface,
4746                                         global->version, display->user_data);
4747 }
4748
4749 void
4750 display_set_global_handler_remove(struct display *display,
4751                            display_global_handler_t remove_handler)
4752 {
4753         display->global_handler_remove = remove_handler;
4754         if (!remove_handler)
4755                 return;
4756 }
4757
4758 void
4759 display_set_output_configure_handler(struct display *display,
4760                                      display_output_handler_t handler)
4761 {
4762         struct output *output;
4763
4764         display->output_configure_handler = handler;
4765         if (!handler)
4766                 return;
4767
4768         wl_list_for_each(output, &display->output_list, link) {
4769                 if (output->allocation.width == 0 &&
4770                     output->allocation.height == 0)
4771                         continue;
4772
4773                 (*display->output_configure_handler)(output,
4774                                                      display->user_data);
4775         }
4776 }
4777
4778 void
4779 output_set_user_data(struct output *output, void *data)
4780 {
4781         output->user_data = data;
4782 }
4783
4784 void *
4785 output_get_user_data(struct output *output)
4786 {
4787         return output->user_data;
4788 }
4789
4790 void
4791 output_set_destroy_handler(struct output *output,
4792                            display_output_handler_t handler)
4793 {
4794         output->destroy_handler = handler;
4795         /* FIXME: implement this, once we have way to remove outputs */
4796 }
4797
4798 void
4799 output_get_allocation(struct output *output, struct rectangle *base)
4800 {
4801         struct rectangle allocation = output->allocation;
4802
4803         switch (output->transform) {
4804         case WL_OUTPUT_TRANSFORM_90:
4805         case WL_OUTPUT_TRANSFORM_270:
4806         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
4807         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
4808                 /* Swap width and height */
4809                 allocation.width = output->allocation.height;
4810                 allocation.height = output->allocation.width;
4811                 break;
4812         }
4813
4814         *base = allocation;
4815 }
4816
4817 struct wl_output *
4818 output_get_wl_output(struct output *output)
4819 {
4820         return output->output;
4821 }
4822
4823 enum wl_output_transform
4824 output_get_transform(struct output *output)
4825 {
4826         return output->transform;
4827 }
4828
4829 uint32_t
4830 output_get_scale(struct output *output)
4831 {
4832         return output->scale;
4833 }
4834
4835 static void
4836 fini_xkb(struct input *input)
4837 {
4838         xkb_state_unref(input->xkb.state);
4839         xkb_map_unref(input->xkb.keymap);
4840 }
4841
4842 #define MIN(a,b) ((a) < (b) ? a : b)
4843
4844 static void
4845 display_add_input(struct display *d, uint32_t id)
4846 {
4847         struct input *input;
4848
4849         input = xzalloc(sizeof *input);
4850         input->display = d;
4851         input->seat = wl_registry_bind(d->registry, id, &wl_seat_interface,
4852                                        MIN(d->seat_version, 3));
4853         input->touch_focus = NULL;
4854         input->pointer_focus = NULL;
4855         input->keyboard_focus = NULL;
4856         wl_list_init(&input->touch_point_list);
4857         wl_list_insert(d->input_list.prev, &input->link);
4858
4859         wl_seat_add_listener(input->seat, &seat_listener, input);
4860         wl_seat_set_user_data(input->seat, input);
4861
4862         input->data_device =
4863                 wl_data_device_manager_get_data_device(d->data_device_manager,
4864                                                        input->seat);
4865         wl_data_device_add_listener(input->data_device, &data_device_listener,
4866                                     input);
4867
4868         input->pointer_surface = wl_compositor_create_surface(d->compositor);
4869
4870         input->repeat_timer_fd = timerfd_create(CLOCK_MONOTONIC,
4871                                                 TFD_CLOEXEC | TFD_NONBLOCK);
4872         input->repeat_task.run = keyboard_repeat_func;
4873         display_watch_fd(d, input->repeat_timer_fd,
4874                          EPOLLIN, &input->repeat_task);
4875 }
4876
4877 static void
4878 input_destroy(struct input *input)
4879 {
4880         input_remove_keyboard_focus(input);
4881         input_remove_pointer_focus(input);
4882
4883         if (input->drag_offer)
4884                 data_offer_destroy(input->drag_offer);
4885
4886         if (input->selection_offer)
4887                 data_offer_destroy(input->selection_offer);
4888
4889         wl_data_device_destroy(input->data_device);
4890
4891         if (input->display->seat_version >= 3) {
4892                 if (input->pointer)
4893                         wl_pointer_release(input->pointer);
4894                 if (input->keyboard)
4895                         wl_keyboard_release(input->keyboard);
4896         }
4897
4898         fini_xkb(input);
4899
4900         wl_surface_destroy(input->pointer_surface);
4901
4902         wl_list_remove(&input->link);
4903         wl_seat_destroy(input->seat);
4904         close(input->repeat_timer_fd);
4905         free(input);
4906 }
4907
4908 static void
4909 init_workspace_manager(struct display *d, uint32_t id)
4910 {
4911         d->workspace_manager =
4912                 wl_registry_bind(d->registry, id,
4913                                  &workspace_manager_interface, 1);
4914         if (d->workspace_manager != NULL)
4915                 workspace_manager_add_listener(d->workspace_manager,
4916                                                &workspace_manager_listener,
4917                                                d);
4918 }
4919
4920 static void
4921 shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
4922 {
4923         struct display *d = data;
4924
4925         if (format == WL_SHM_FORMAT_RGB565)
4926                 d->has_rgb565 = 1;
4927 }
4928
4929 struct wl_shm_listener shm_listener = {
4930         shm_format
4931 };
4932
4933 static void
4934 registry_handle_global(void *data, struct wl_registry *registry, uint32_t id,
4935                        const char *interface, uint32_t version)
4936 {
4937         struct display *d = data;
4938         struct global *global;
4939
4940         global = xmalloc(sizeof *global);
4941         global->name = id;
4942         global->interface = strdup(interface);
4943         global->version = version;
4944         wl_list_insert(d->global_list.prev, &global->link);
4945
4946         if (strcmp(interface, "wl_compositor") == 0) {
4947                 d->compositor = wl_registry_bind(registry, id,
4948                                                  &wl_compositor_interface, 3);
4949         } else if (strcmp(interface, "wl_output") == 0) {
4950                 display_add_output(d, id);
4951         } else if (strcmp(interface, "wl_seat") == 0) {
4952                 d->seat_version = version;
4953                 display_add_input(d, id);
4954         } else if (strcmp(interface, "wl_shell") == 0) {
4955                 d->shell = wl_registry_bind(registry,
4956                                             id, &wl_shell_interface, 1);
4957         } else if (strcmp(interface, "wl_shm") == 0) {
4958                 d->shm = wl_registry_bind(registry, id, &wl_shm_interface, 1);
4959                 wl_shm_add_listener(d->shm, &shm_listener, d);
4960         } else if (strcmp(interface, "wl_data_device_manager") == 0) {
4961                 d->data_device_manager =
4962                         wl_registry_bind(registry, id,
4963                                          &wl_data_device_manager_interface, 1);
4964         } else if (strcmp(interface, "text_cursor_position") == 0) {
4965                 d->text_cursor_position =
4966                         wl_registry_bind(registry, id,
4967                                          &text_cursor_position_interface, 1);
4968         } else if (strcmp(interface, "workspace_manager") == 0) {
4969                 init_workspace_manager(d, id);
4970         } else if (strcmp(interface, "wl_subcompositor") == 0) {
4971                 d->subcompositor =
4972                         wl_registry_bind(registry, id,
4973                                          &wl_subcompositor_interface, 1);
4974         }
4975
4976         if (d->global_handler)
4977                 d->global_handler(d, id, interface, version, d->user_data);
4978 }
4979
4980 static void
4981 registry_handle_global_remove(void *data, struct wl_registry *registry,
4982                               uint32_t name)
4983 {
4984         struct display *d = data;
4985         struct global *global;
4986         struct global *tmp;
4987
4988         wl_list_for_each_safe(global, tmp, &d->global_list, link) {
4989                 if (global->name != name)
4990                         continue;
4991
4992                 if (strcmp(global->interface, "wl_output") == 0)
4993                         display_destroy_output(d, name);
4994
4995                 /* XXX: Should destroy remaining bound globals */
4996
4997                 if (d->global_handler_remove)
4998                         d->global_handler_remove(d, name, global->interface,
4999                                         global->version, d->user_data);
5000
5001                 wl_list_remove(&global->link);
5002                 free(global->interface);
5003                 free(global);
5004         }
5005 }
5006
5007 void *
5008 display_bind(struct display *display, uint32_t name,
5009              const struct wl_interface *interface, uint32_t version)
5010 {
5011         return wl_registry_bind(display->registry, name, interface, version);
5012 }
5013
5014 static const struct wl_registry_listener registry_listener = {
5015         registry_handle_global,
5016         registry_handle_global_remove
5017 };
5018
5019 #ifdef HAVE_CAIRO_EGL
5020 static int
5021 init_egl(struct display *d)
5022 {
5023         EGLint major, minor;
5024         EGLint n;
5025
5026 #ifdef USE_CAIRO_GLESV2
5027 #  define GL_BIT EGL_OPENGL_ES2_BIT
5028 #else
5029 #  define GL_BIT EGL_OPENGL_BIT
5030 #endif
5031
5032         static const EGLint argb_cfg_attribs[] = {
5033                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
5034                 EGL_RED_SIZE, 1,
5035                 EGL_GREEN_SIZE, 1,
5036                 EGL_BLUE_SIZE, 1,
5037                 EGL_ALPHA_SIZE, 1,
5038                 EGL_DEPTH_SIZE, 1,
5039                 EGL_RENDERABLE_TYPE, GL_BIT,
5040                 EGL_NONE
5041         };
5042
5043 #ifdef USE_CAIRO_GLESV2
5044         static const EGLint context_attribs[] = {
5045                 EGL_CONTEXT_CLIENT_VERSION, 2,
5046                 EGL_NONE
5047         };
5048         EGLint api = EGL_OPENGL_ES_API;
5049 #else
5050         EGLint *context_attribs = NULL;
5051         EGLint api = EGL_OPENGL_API;
5052 #endif
5053
5054         d->dpy = eglGetDisplay(d->display);
5055         if (!eglInitialize(d->dpy, &major, &minor)) {
5056                 fprintf(stderr, "failed to initialize EGL\n");
5057                 return -1;
5058         }
5059
5060         if (!eglBindAPI(api)) {
5061                 fprintf(stderr, "failed to bind EGL client API\n");
5062                 return -1;
5063         }
5064
5065         if (!eglChooseConfig(d->dpy, argb_cfg_attribs,
5066                              &d->argb_config, 1, &n) || n != 1) {
5067                 fprintf(stderr, "failed to choose argb EGL config\n");
5068                 return -1;
5069         }
5070
5071         d->argb_ctx = eglCreateContext(d->dpy, d->argb_config,
5072                                        EGL_NO_CONTEXT, context_attribs);
5073         if (d->argb_ctx == NULL) {
5074                 fprintf(stderr, "failed to create EGL context\n");
5075                 return -1;
5076         }
5077
5078         d->argb_device = cairo_egl_device_create(d->dpy, d->argb_ctx);
5079         if (cairo_device_status(d->argb_device) != CAIRO_STATUS_SUCCESS) {
5080                 fprintf(stderr, "failed to get cairo EGL argb device\n");
5081                 return -1;
5082         }
5083
5084         return 0;
5085 }
5086
5087 static void
5088 fini_egl(struct display *display)
5089 {
5090         cairo_device_destroy(display->argb_device);
5091
5092         eglMakeCurrent(display->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE,
5093                        EGL_NO_CONTEXT);
5094
5095         eglTerminate(display->dpy);
5096         eglReleaseThread();
5097 }
5098 #endif
5099
5100 static void
5101 init_dummy_surface(struct display *display)
5102 {
5103         int len;
5104         void *data;
5105
5106         len = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, 1);
5107         data = malloc(len);
5108         display->dummy_surface =
5109                 cairo_image_surface_create_for_data(data, CAIRO_FORMAT_ARGB32,
5110                                                     1, 1, len);
5111         display->dummy_surface_data = data;
5112 }
5113
5114 static void
5115 handle_display_data(struct task *task, uint32_t events)
5116 {
5117         struct display *display =
5118                 container_of(task, struct display, display_task);
5119         struct epoll_event ep;
5120         int ret;
5121
5122         display->display_fd_events = events;
5123
5124         if (events & EPOLLERR || events & EPOLLHUP) {
5125                 display_exit(display);
5126                 return;
5127         }
5128
5129         if (events & EPOLLIN) {
5130                 ret = wl_display_dispatch(display->display);
5131                 if (ret == -1) {
5132                         display_exit(display);
5133                         return;
5134                 }
5135         }
5136
5137         if (events & EPOLLOUT) {
5138                 ret = wl_display_flush(display->display);
5139                 if (ret == 0) {
5140                         ep.events = EPOLLIN | EPOLLERR | EPOLLHUP;
5141                         ep.data.ptr = &display->display_task;
5142                         epoll_ctl(display->epoll_fd, EPOLL_CTL_MOD,
5143                                   display->display_fd, &ep);
5144                 } else if (ret == -1 && errno != EAGAIN) {
5145                         display_exit(display);
5146                         return;
5147                 }
5148         }
5149 }
5150
5151 static void
5152 log_handler(const char *format, va_list args)
5153 {
5154         vfprintf(stderr, format, args);
5155 }
5156
5157 struct display *
5158 display_create(int *argc, char *argv[])
5159 {
5160         struct display *d;
5161
5162         wl_log_set_handler_client(log_handler);
5163
5164         d = zalloc(sizeof *d);
5165         if (d == NULL)
5166                 return NULL;
5167
5168         d->display = wl_display_connect(NULL);
5169         if (d->display == NULL) {
5170                 fprintf(stderr, "failed to connect to Wayland display: %m\n");
5171                 free(d);
5172                 return NULL;
5173         }
5174
5175         d->xkb_context = xkb_context_new(0);
5176         if (d->xkb_context == NULL) {
5177                 fprintf(stderr, "Failed to create XKB context\n");
5178                 free(d);
5179                 return NULL;
5180         }
5181
5182         d->epoll_fd = os_epoll_create_cloexec();
5183         d->display_fd = wl_display_get_fd(d->display);
5184         d->display_task.run = handle_display_data;
5185         display_watch_fd(d, d->display_fd, EPOLLIN | EPOLLERR | EPOLLHUP,
5186                          &d->display_task);
5187
5188         wl_list_init(&d->deferred_list);
5189         wl_list_init(&d->input_list);
5190         wl_list_init(&d->output_list);
5191         wl_list_init(&d->global_list);
5192
5193         d->workspace = 0;
5194         d->workspace_count = 1;
5195
5196         d->registry = wl_display_get_registry(d->display);
5197         wl_registry_add_listener(d->registry, &registry_listener, d);
5198
5199         if (wl_display_dispatch(d->display) < 0) {
5200                 fprintf(stderr, "Failed to process Wayland connection: %m\n");
5201                 return NULL;
5202         }
5203
5204 #ifdef HAVE_CAIRO_EGL
5205         if (init_egl(d) < 0)
5206                 fprintf(stderr, "EGL does not seem to work, "
5207                         "falling back to software rendering and wl_shm.\n");
5208 #endif
5209
5210         create_cursors(d);
5211
5212         d->theme = theme_create();
5213
5214         wl_list_init(&d->window_list);
5215
5216         init_dummy_surface(d);
5217
5218         return d;
5219 }
5220
5221 static void
5222 display_destroy_outputs(struct display *display)
5223 {
5224         struct output *tmp;
5225         struct output *output;
5226
5227         wl_list_for_each_safe(output, tmp, &display->output_list, link)
5228                 output_destroy(output);
5229 }
5230
5231 static void
5232 display_destroy_inputs(struct display *display)
5233 {
5234         struct input *tmp;
5235         struct input *input;
5236
5237         wl_list_for_each_safe(input, tmp, &display->input_list, link)
5238                 input_destroy(input);
5239 }
5240
5241 void
5242 display_destroy(struct display *display)
5243 {
5244         if (!wl_list_empty(&display->window_list))
5245                 fprintf(stderr, "toytoolkit warning: %d windows exist.\n",
5246                         wl_list_length(&display->window_list));
5247
5248         if (!wl_list_empty(&display->deferred_list))
5249                 fprintf(stderr, "toytoolkit warning: deferred tasks exist.\n");
5250
5251         cairo_surface_destroy(display->dummy_surface);
5252         free(display->dummy_surface_data);
5253
5254         display_destroy_outputs(display);
5255         display_destroy_inputs(display);
5256
5257         xkb_context_unref(display->xkb_context);
5258
5259         theme_destroy(display->theme);
5260         destroy_cursors(display);
5261
5262 #ifdef HAVE_CAIRO_EGL
5263         if (display->argb_device)
5264                 fini_egl(display);
5265 #endif
5266
5267         if (display->subcompositor)
5268                 wl_subcompositor_destroy(display->subcompositor);
5269
5270         if (display->shell)
5271                 wl_shell_destroy(display->shell);
5272
5273         if (display->shm)
5274                 wl_shm_destroy(display->shm);
5275
5276         if (display->data_device_manager)
5277                 wl_data_device_manager_destroy(display->data_device_manager);
5278
5279         wl_compositor_destroy(display->compositor);
5280         wl_registry_destroy(display->registry);
5281
5282         close(display->epoll_fd);
5283
5284         if (!(display->display_fd_events & EPOLLERR) &&
5285             !(display->display_fd_events & EPOLLHUP))
5286                 wl_display_flush(display->display);
5287
5288         wl_display_disconnect(display->display);
5289         free(display);
5290 }
5291
5292 void
5293 display_set_user_data(struct display *display, void *data)
5294 {
5295         display->user_data = data;
5296 }
5297
5298 void *
5299 display_get_user_data(struct display *display)
5300 {
5301         return display->user_data;
5302 }
5303
5304 struct wl_display *
5305 display_get_display(struct display *display)
5306 {
5307         return display->display;
5308 }
5309
5310 int
5311 display_has_subcompositor(struct display *display)
5312 {
5313         if (display->subcompositor)
5314                 return 1;
5315
5316         wl_display_roundtrip(display->display);
5317
5318         return display->subcompositor != NULL;
5319 }
5320
5321 cairo_device_t *
5322 display_get_cairo_device(struct display *display)
5323 {
5324         return display->argb_device;
5325 }
5326
5327 struct output *
5328 display_get_output(struct display *display)
5329 {
5330         return container_of(display->output_list.next, struct output, link);
5331 }
5332
5333 struct wl_compositor *
5334 display_get_compositor(struct display *display)
5335 {
5336         return display->compositor;
5337 }
5338
5339 uint32_t
5340 display_get_serial(struct display *display)
5341 {
5342         return display->serial;
5343 }
5344
5345 EGLDisplay
5346 display_get_egl_display(struct display *d)
5347 {
5348         return d->dpy;
5349 }
5350
5351 struct wl_data_source *
5352 display_create_data_source(struct display *display)
5353 {
5354         return wl_data_device_manager_create_data_source(display->data_device_manager);
5355 }
5356
5357 EGLConfig
5358 display_get_argb_egl_config(struct display *d)
5359 {
5360         return d->argb_config;
5361 }
5362
5363 int
5364 display_acquire_window_surface(struct display *display,
5365                                struct window *window,
5366                                EGLContext ctx)
5367 {
5368         struct surface *surface = window->main_surface;
5369
5370         if (surface->buffer_type != WINDOW_BUFFER_TYPE_EGL_WINDOW)
5371                 return -1;
5372
5373         widget_get_cairo_surface(window->main_surface->widget);
5374         return surface->toysurface->acquire(surface->toysurface, ctx);
5375 }
5376
5377 void
5378 display_release_window_surface(struct display *display,
5379                                struct window *window)
5380 {
5381         struct surface *surface = window->main_surface;
5382
5383         if (surface->buffer_type != WINDOW_BUFFER_TYPE_EGL_WINDOW)
5384                 return;
5385
5386         surface->toysurface->release(surface->toysurface);
5387 }
5388
5389 void
5390 display_defer(struct display *display, struct task *task)
5391 {
5392         wl_list_insert(&display->deferred_list, &task->link);
5393 }
5394
5395 void
5396 display_watch_fd(struct display *display,
5397                  int fd, uint32_t events, struct task *task)
5398 {
5399         struct epoll_event ep;
5400
5401         ep.events = events;
5402         ep.data.ptr = task;
5403         epoll_ctl(display->epoll_fd, EPOLL_CTL_ADD, fd, &ep);
5404 }
5405
5406 void
5407 display_unwatch_fd(struct display *display, int fd)
5408 {
5409         epoll_ctl(display->epoll_fd, EPOLL_CTL_DEL, fd, NULL);
5410 }
5411
5412 void
5413 display_run(struct display *display)
5414 {
5415         struct task *task;
5416         struct epoll_event ep[16];
5417         int i, count, ret;
5418
5419         display->running = 1;
5420         while (1) {
5421                 while (!wl_list_empty(&display->deferred_list)) {
5422                         task = container_of(display->deferred_list.prev,
5423                                             struct task, link);
5424                         wl_list_remove(&task->link);
5425                         task->run(task, 0);
5426                 }
5427
5428                 wl_display_dispatch_pending(display->display);
5429
5430                 if (!display->running)
5431                         break;
5432
5433                 ret = wl_display_flush(display->display);
5434                 if (ret < 0 && errno == EAGAIN) {
5435                         ep[0].events =
5436                                 EPOLLIN | EPOLLOUT | EPOLLERR | EPOLLHUP;
5437                         ep[0].data.ptr = &display->display_task;
5438
5439                         epoll_ctl(display->epoll_fd, EPOLL_CTL_MOD,
5440                                   display->display_fd, &ep[0]);
5441                 } else if (ret < 0) {
5442                         break;
5443                 }
5444
5445                 count = epoll_wait(display->epoll_fd,
5446                                    ep, ARRAY_LENGTH(ep), -1);
5447                 for (i = 0; i < count; i++) {
5448                         task = ep[i].data.ptr;
5449                         task->run(task, ep[i].events);
5450                 }
5451         }
5452 }
5453
5454 void
5455 display_exit(struct display *display)
5456 {
5457         display->running = 0;
5458 }
5459
5460 void
5461 keysym_modifiers_add(struct wl_array *modifiers_map,
5462                      const char *name)
5463 {
5464         size_t len = strlen(name) + 1;
5465         char *p;
5466
5467         p = wl_array_add(modifiers_map, len);
5468
5469         if (p == NULL)
5470                 return;
5471
5472         strncpy(p, name, len);
5473 }
5474
5475 static xkb_mod_index_t
5476 keysym_modifiers_get_index(struct wl_array *modifiers_map,
5477                            const char *name)
5478 {
5479         xkb_mod_index_t index = 0;
5480         char *p = modifiers_map->data;
5481
5482         while ((const char *)p < (const char *)(modifiers_map->data + modifiers_map->size)) {
5483                 if (strcmp(p, name) == 0)
5484                         return index;
5485
5486                 index++;
5487                 p += strlen(p) + 1;
5488         }
5489
5490         return XKB_MOD_INVALID;
5491 }
5492
5493 xkb_mod_mask_t
5494 keysym_modifiers_get_mask(struct wl_array *modifiers_map,
5495                           const char *name)
5496 {
5497         xkb_mod_index_t index = keysym_modifiers_get_index(modifiers_map, name);
5498
5499         if (index == XKB_MOD_INVALID)
5500                 return XKB_MOD_INVALID;
5501
5502         return 1 << index;
5503 }
5504
5505 void *
5506 fail_on_null(void *p)
5507 {
5508         if (p == NULL) {
5509                 fprintf(stderr, "%s: out of memory\n", program_invocation_short_name);
5510                 exit(EXIT_FAILURE);
5511         }
5512
5513         return p;
5514 }
5515
5516 void *
5517 xmalloc(size_t s)
5518 {
5519         return fail_on_null(malloc(s));
5520 }
5521
5522 void *
5523 xzalloc(size_t s)
5524 {
5525         return fail_on_null(zalloc(s));
5526 }
5527
5528 char *
5529 xstrdup(const char *s)
5530 {
5531         return fail_on_null(strdup(s));
5532 }