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
 121         void *user_data;
 122
 123         struct xkb_context *xkb_context;
 124
 125         uint32_t workspace;
 126         uint32_t workspace_count;
 127
 128         /* A hack to get text extents for tooltips */
 129         cairo_surface_t *dummy_surface;
 130         void *dummy_surface_data;
 131
 132         int has_rgb565;
 133         int seat_version;
 134 };
 135
 136 enum {
 137         TYPE_NONE,
 138         TYPE_TOPLEVEL,
 139         TYPE_FULLSCREEN,
 140         TYPE_MAXIMIZED,
 141         TYPE_TRANSIENT,
 142         TYPE_MENU,
 143         TYPE_CUSTOM
 144 };
 145
 146 struct window_output {
 147         struct output *output;
 148         struct wl_list link;
 149 };
 150
 151 struct toysurface {
 152         /*
 153          * Prepare the surface for drawing. Makes sure there is a surface
 154          * of the right size available for rendering, and returns it.
 155          * dx,dy are the x,y of wl_surface.attach.
 156          * width,height are the new buffer size.
 157          * If flags has SURFACE_HINT_RESIZE set, the user is
 158          * doing continuous resizing.
 159          * Returns the Cairo surface to draw to.
 160          */
 161         cairo_surface_t *(*prepare)(struct toysurface *base, int dx, int dy,
 162                                     int32_t width, int32_t height, uint32_t flags,
 163                                     enum wl_output_transform buffer_transform, int32_t buffer_scale);
 164
 165         /*
 166          * Post the surface to the server, returning the server allocation
 167          * rectangle. The Cairo surface from prepare() must be destroyed
 168          * after calling this.
 169          */
 170         void (*swap)(struct toysurface *base,
 171                      enum wl_output_transform buffer_transform, int32_t buffer_scale,
 172                      struct rectangle *server_allocation);
 173
 174         /*
 175          * Make the toysurface current with the given EGL context.
 176          * Returns 0 on success, and negative of failure.
 177          */
 178         int (*acquire)(struct toysurface *base, EGLContext ctx);
 179
 180         /*
 181          * Release the toysurface from the EGL context, returning control
 182          * to Cairo.
 183          */
 184         void (*release)(struct toysurface *base);
 185
 186         /*
 187          * Destroy the toysurface, including the Cairo surface, any
 188          * backing storage, and the Wayland protocol objects.
 189          */
 190         void (*destroy)(struct toysurface *base);
 191 };
 192
 193 struct surface {
 194         struct window *window;
 195
 196         struct wl_surface *surface;
 197         struct wl_subsurface *subsurface;
 198         int synchronized;
 199         int synchronized_default;
 200         struct toysurface *toysurface;
 201         struct widget *widget;
 202         int redraw_needed;
 203         struct wl_callback *frame_cb;
 204         uint32_t last_time;
 205
 206         struct rectangle allocation;
 207         struct rectangle server_allocation;
 208
 209         struct wl_region *input_region;
 210         struct wl_region *opaque_region;
 211
 212         enum window_buffer_type buffer_type;
 213         enum wl_output_transform buffer_transform;
 214         int32_t buffer_scale;
 215
 216         cairo_surface_t *cairo_surface;
 217
 218         struct wl_list link;
 219 };
 220
 221 struct window {
 222         struct display *display;
 223         struct window *parent;
 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 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
 324         struct {
 325                 struct xkb_keymap *keymap;
 326                 struct xkb_state *state;
 327                 xkb_mod_mask_t control_mask;
 328                 xkb_mod_mask_t alt_mask;
 329                 xkb_mod_mask_t shift_mask;
 330         } xkb;
 331
 332         struct task repeat_task;
 333         int repeat_timer_fd;
 334         uint32_t repeat_sym;
 335         uint32_t repeat_key;
 336         uint32_t repeat_time;
 337 };
 338
 339 struct output {
 340         struct display *display;
 341         struct wl_output *output;
 342         struct rectangle allocation;
 343         struct wl_list link;
 344         int transform;
 345         int scale;
 346
 347         display_output_handler_t destroy_handler;
 348         void *user_data;
 349 };
 350
 351 enum frame_button_action {
 352         FRAME_BUTTON_NULL = 0,
 353         FRAME_BUTTON_ICON = 1,
 354         FRAME_BUTTON_CLOSE = 2,
 355         FRAME_BUTTON_MINIMIZE = 3,
 356         FRAME_BUTTON_MAXIMIZE = 4,
 357 };
 358
 359 enum frame_button_pointer {
 360         FRAME_BUTTON_DEFAULT = 0,
 361         FRAME_BUTTON_OVER = 1,
 362         FRAME_BUTTON_ACTIVE = 2,
 363 };
 364
 365 enum frame_button_align {
 366         FRAME_BUTTON_RIGHT = 0,
 367         FRAME_BUTTON_LEFT = 1,
 368 };
 369
 370 enum frame_button_decoration {
 371         FRAME_BUTTON_NONE = 0,
 372         FRAME_BUTTON_FANCY = 1,
 373 };
 374
 375 struct frame_button {
 376         struct widget *widget;
 377         struct frame *frame;
 378         cairo_surface_t *icon;
 379         enum frame_button_action type;
 380         enum frame_button_pointer state;
 381         struct wl_list link;    /* buttons_list */
 382         enum frame_button_align align;
 383         enum frame_button_decoration decoration;
 384 };
 385
 386 struct frame {
 387         struct widget *widget;
 388         struct widget *child;
 389         struct wl_list buttons_list;
 390 };
 391
 392 struct menu {
 393         struct window *window;
 394         struct widget *widget;
 395         struct input *input;
 396         const char **entries;
 397         uint32_t time;
 398         int current;
 399         int count;
 400         int release_count;
 401         menu_func_t func;
 402 };
 403
 404 struct tooltip {
 405         struct widget *parent;
 406         struct window *window;
 407         struct widget *widget;
 408         char *entry;
 409         struct task tooltip_task;
 410         int tooltip_fd;
 411         float x, y;
 412 };
 413
 414 struct shm_pool {
 415         struct wl_shm_pool *pool;
 416         size_t size;
 417         size_t used;
 418         void *data;
 419 };
 420
 421 enum {
 422         CURSOR_DEFAULT = 100,
 423         CURSOR_UNSET
 424 };
 425
 426 enum window_location {
 427         WINDOW_INTERIOR = 0,
 428         WINDOW_RESIZING_TOP = 1,
 429         WINDOW_RESIZING_BOTTOM = 2,
 430         WINDOW_RESIZING_LEFT = 4,
 431         WINDOW_RESIZING_TOP_LEFT = 5,
 432         WINDOW_RESIZING_BOTTOM_LEFT = 6,
 433         WINDOW_RESIZING_RIGHT = 8,
 434         WINDOW_RESIZING_TOP_RIGHT = 9,
 435         WINDOW_RESIZING_BOTTOM_RIGHT = 10,
 436         WINDOW_RESIZING_MASK = 15,
 437         WINDOW_EXTERIOR = 16,
 438         WINDOW_TITLEBAR = 17,
 439         WINDOW_CLIENT_AREA = 18,
 440 };
 441
 442 static const cairo_user_data_key_t shm_surface_data_key;
 443
 444 /* #define DEBUG */
 445
 446 #ifdef DEBUG
 447
 448 static void
 449 debug_print(void *proxy, int line, const char *func, const char *fmt, ...)
 450 __attribute__ ((format (printf, 4, 5)));
 451
 452 static void
 453 debug_print(void *proxy, int line, const char *func, const char *fmt, ...)
 454 {
 455         va_list ap;
 456         struct timeval tv;
 457
 458         gettimeofday(&tv, NULL);
 459         fprintf(stderr, "%8ld.%03ld ",
 460                 (long)tv.tv_sec & 0xffff, (long)tv.tv_usec / 1000);
 461
 462         if (proxy)
 463                 fprintf(stderr, "%s@%d ",
 464                         wl_proxy_get_class(proxy), wl_proxy_get_id(proxy));
 465
 466         /*fprintf(stderr, __FILE__ ":%d:%s ", line, func);*/
 467         fprintf(stderr, "%s ", func);
 468
 469         va_start(ap, fmt);
 470         vfprintf(stderr, fmt, ap);
 471         va_end(ap);
 472 }
 473
 474 #define DBG(fmt, ...) \
 475         debug_print(NULL, __LINE__, __func__, fmt, ##__VA_ARGS__)
 476
 477 #define DBG_OBJ(obj, fmt, ...) \
 478         debug_print(obj, __LINE__, __func__, fmt, ##__VA_ARGS__)
 479
 480 #else
 481
 482 #define DBG(...) do {} while (0)
 483 #define DBG_OBJ(...) do {} while (0)
 484
 485 #endif
 486
 487 static void
 488 surface_to_buffer_size (enum wl_output_transform buffer_transform, int32_t buffer_scale, int32_t *width, int32_t *height)
 489 {
 490         int32_t tmp;
 491
 492         switch (buffer_transform) {
 493         case WL_OUTPUT_TRANSFORM_90:
 494         case WL_OUTPUT_TRANSFORM_270:
 495         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
 496         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
 497                 tmp = *width;
 498                 *width = *height;
 499                 *height = tmp;
 500                 break;
 501         default:
 502                 break;
 503         }
 504
 505         *width *= buffer_scale;
 506         *height *= buffer_scale;
 507 }
 508
 509 static void
 510 buffer_to_surface_size (enum wl_output_transform buffer_transform, int32_t buffer_scale, int32_t *width, int32_t *height)
 511 {
 512         int32_t tmp;
 513
 514         switch (buffer_transform) {
 515         case WL_OUTPUT_TRANSFORM_90:
 516         case WL_OUTPUT_TRANSFORM_270:
 517         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
 518         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
 519                 tmp = *width;
 520                 *width = *height;
 521                 *height = tmp;
 522                 break;
 523         default:
 524                 break;
 525         }
 526
 527         *width /= buffer_scale;
 528         *height /= buffer_scale;
 529 }
 530
 531 #ifdef HAVE_CAIRO_EGL
 532
 533 struct egl_window_surface {
 534         struct toysurface base;
 535         cairo_surface_t *cairo_surface;
 536         struct display *display;
 537         struct wl_surface *surface;
 538         struct wl_egl_window *egl_window;
 539         EGLSurface egl_surface;
 540 };
 541
 542 static struct egl_window_surface *
 543 to_egl_window_surface(struct toysurface *base)
 544 {
 545         return container_of(base, struct egl_window_surface, base);
 546 }
 547
 548 static cairo_surface_t *
 549 egl_window_surface_prepare(struct toysurface *base, int dx, int dy,
 550                            int32_t width, int32_t height, uint32_t flags,
 551                            enum wl_output_transform buffer_transform, int32_t buffer_scale)
 552 {
 553         struct egl_window_surface *surface = to_egl_window_surface(base);
 554
 555         surface_to_buffer_size (buffer_transform, buffer_scale, &width, &height);
 556
 557         wl_egl_window_resize(surface->egl_window, width, height, dx, dy);
 558         cairo_gl_surface_set_size(surface->cairo_surface, width, height);
 559
 560         return cairo_surface_reference(surface->cairo_surface);
 561 }
 562
 563 static void
 564 egl_window_surface_swap(struct toysurface *base,
 565                         enum wl_output_transform buffer_transform, int32_t buffer_scale,
 566                         struct rectangle *server_allocation)
 567 {
 568         struct egl_window_surface *surface = to_egl_window_surface(base);
 569
 570         cairo_gl_surface_swapbuffers(surface->cairo_surface);
 571         wl_egl_window_get_attached_size(surface->egl_window,
 572                                         &server_allocation->width,
 573                                         &server_allocation->height);
 574
 575         buffer_to_surface_size (buffer_transform, buffer_scale,
 576                                 &server_allocation->width,
 577                                 &server_allocation->height);
 578 }
 579
 580 static int
 581 egl_window_surface_acquire(struct toysurface *base, EGLContext ctx)
 582 {
 583         struct egl_window_surface *surface = to_egl_window_surface(base);
 584         cairo_device_t *device;
 585
 586         device = cairo_surface_get_device(surface->cairo_surface);
 587         if (!device)
 588                 return -1;
 589
 590         if (!ctx) {
 591                 if (device == surface->display->argb_device)
 592                         ctx = surface->display->argb_ctx;
 593                 else
 594                         assert(0);
 595         }
 596
 597         cairo_device_flush(device);
 598         cairo_device_acquire(device);
 599         if (!eglMakeCurrent(surface->display->dpy, surface->egl_surface,
 600                             surface->egl_surface, ctx))
 601                 fprintf(stderr, "failed to make surface current\n");
 602
 603         return 0;
 604 }
 605
 606 static void
 607 egl_window_surface_release(struct toysurface *base)
 608 {
 609         struct egl_window_surface *surface = to_egl_window_surface(base);
 610         cairo_device_t *device;
 611
 612         device = cairo_surface_get_device(surface->cairo_surface);
 613         if (!device)
 614                 return;
 615
 616         if (!eglMakeCurrent(surface->display->dpy, NULL, NULL,
 617                             surface->display->argb_ctx))
 618                 fprintf(stderr, "failed to make context current\n");
 619
 620         cairo_device_release(device);
 621 }
 622
 623 static void
 624 egl_window_surface_destroy(struct toysurface *base)
 625 {
 626         struct egl_window_surface *surface = to_egl_window_surface(base);
 627         struct display *d = surface->display;
 628
 629         cairo_surface_destroy(surface->cairo_surface);
 630         eglDestroySurface(d->dpy, surface->egl_surface);
 631         wl_egl_window_destroy(surface->egl_window);
 632         surface->surface = NULL;
 633
 634         free(surface);
 635 }
 636
 637 static struct toysurface *
 638 egl_window_surface_create(struct display *display,
 639                           struct wl_surface *wl_surface,
 640                           uint32_t flags,
 641                           struct rectangle *rectangle)
 642 {
 643         struct egl_window_surface *surface;
 644
 645         if (display->dpy == EGL_NO_DISPLAY)
 646                 return NULL;
 647
 648         surface = calloc(1, sizeof *surface);
 649         if (!surface)
 650                 return NULL;
 651
 652         surface->base.prepare = egl_window_surface_prepare;
 653         surface->base.swap = egl_window_surface_swap;
 654         surface->base.acquire = egl_window_surface_acquire;
 655         surface->base.release = egl_window_surface_release;
 656         surface->base.destroy = egl_window_surface_destroy;
 657
 658         surface->display = display;
 659         surface->surface = wl_surface;
 660
 661         surface->egl_window = wl_egl_window_create(surface->surface,
 662                                                    rectangle->width,
 663                                                    rectangle->height);
 664
 665         surface->egl_surface = eglCreateWindowSurface(display->dpy,
 666                                                       display->argb_config,
 667                                                       surface->egl_window,
 668                                                       NULL);
 669
 670         surface->cairo_surface =
 671                 cairo_gl_surface_create_for_egl(display->argb_device,
 672                                                 surface->egl_surface,
 673                                                 rectangle->width,
 674                                                 rectangle->height);
 675
 676         return &surface->base;
 677 }
 678
 679 #else
 680
 681 static struct toysurface *
 682 egl_window_surface_create(struct display *display,
 683                           struct wl_surface *wl_surface,
 684                           uint32_t flags,
 685                           struct rectangle *rectangle)
 686 {
 687         return NULL;
 688 }
 689
 690 #endif
 691
 692 struct shm_surface_data {
 693         struct wl_buffer *buffer;
 694         struct shm_pool *pool;
 695 };
 696
 697 struct wl_buffer *
 698 display_get_buffer_for_surface(struct display *display,
 699                                cairo_surface_t *surface)
 700 {
 701         struct shm_surface_data *data;
 702
 703         data = cairo_surface_get_user_data(surface, &shm_surface_data_key);
 704
 705         return data->buffer;
 706 }
 707
 708 static void
 709 shm_pool_destroy(struct shm_pool *pool);
 710
 711 static void
 712 shm_surface_data_destroy(void *p)
 713 {
 714         struct shm_surface_data *data = p;
 715
 716         wl_buffer_destroy(data->buffer);
 717         if (data->pool)
 718                 shm_pool_destroy(data->pool);
 719
 720         free(data);
 721 }
 722
 723 static struct wl_shm_pool *
 724 make_shm_pool(struct display *display, int size, void **data)
 725 {
 726         struct wl_shm_pool *pool;
 727         int fd;
 728
 729         fd = os_create_anonymous_file(size);
 730         if (fd < 0) {
 731                 fprintf(stderr, "creating a buffer file for %d B failed: %m\n",
 732                         size);
 733                 return NULL;
 734         }
 735
 736         *data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 737         if (*data == MAP_FAILED) {
 738                 fprintf(stderr, "mmap failed: %m\n");
 739                 close(fd);
 740                 return NULL;
 741         }
 742
 743         pool = wl_shm_create_pool(display->shm, fd, size);
 744
 745         close(fd);
 746
 747         return pool;
 748 }
 749
 750 static struct shm_pool *
 751 shm_pool_create(struct display *display, size_t size)
 752 {
 753         struct shm_pool *pool = malloc(sizeof *pool);
 754
 755         if (!pool)
 756                 return NULL;
 757
 758         pool->pool = make_shm_pool(display, size, &pool->data);
 759         if (!pool->pool) {
 760                 free(pool);
 761                 return NULL;
 762         }
 763
 764         pool->size = size;
 765         pool->used = 0;
 766
 767         return pool;
 768 }
 769
 770 static void *
 771 shm_pool_allocate(struct shm_pool *pool, size_t size, int *offset)
 772 {
 773         if (pool->used + size > pool->size)
 774                 return NULL;
 775
 776         *offset = pool->used;
 777         pool->used += size;
 778
 779         return (char *) pool->data + *offset;
 780 }
 781
 782 /* destroy the pool. this does not unmap the memory though */
 783 static void
 784 shm_pool_destroy(struct shm_pool *pool)
 785 {
 786         munmap(pool->data, pool->size);
 787         wl_shm_pool_destroy(pool->pool);
 788         free(pool);
 789 }
 790
 791 /* Start allocating from the beginning of the pool again */
 792 static void
 793 shm_pool_reset(struct shm_pool *pool)
 794 {
 795         pool->used = 0;
 796 }
 797
 798 static int
 799 data_length_for_shm_surface(struct rectangle *rect)
 800 {
 801         int stride;
 802
 803         stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32,
 804                                                 rect->width);
 805         return stride * rect->height;
 806 }
 807
 808 static cairo_surface_t *
 809 display_create_shm_surface_from_pool(struct display *display,
 810                                      struct rectangle *rectangle,
 811                                      uint32_t flags, struct shm_pool *pool)
 812 {
 813         struct shm_surface_data *data;
 814         uint32_t format;
 815         cairo_surface_t *surface;
 816         cairo_format_t cairo_format;
 817         int stride, length, offset;
 818         void *map;
 819
 820         data = malloc(sizeof *data);
 821         if (data == NULL)
 822                 return NULL;
 823
 824         if (flags & SURFACE_HINT_RGB565 && display->has_rgb565)
 825                 cairo_format = CAIRO_FORMAT_RGB16_565;
 826         else
 827                 cairo_format = CAIRO_FORMAT_ARGB32;
 828
 829         stride = cairo_format_stride_for_width (cairo_format, rectangle->width);
 830         length = stride * rectangle->height;
 831         data->pool = NULL;
 832         map = shm_pool_allocate(pool, length, &offset);
 833
 834         if (!map) {
 835                 free(data);
 836                 return NULL;
 837         }
 838
 839         surface = cairo_image_surface_create_for_data (map,
 840                                                        cairo_format,
 841                                                        rectangle->width,
 842                                                        rectangle->height,
 843                                                        stride);
 844
 845         cairo_surface_set_user_data(surface, &shm_surface_data_key,
 846                                     data, shm_surface_data_destroy);
 847
 848         if (flags & SURFACE_HINT_RGB565 && display->has_rgb565)
 849                 format = WL_SHM_FORMAT_RGB565;
 850         else {
 851                 if (flags & SURFACE_OPAQUE)
 852                         format = WL_SHM_FORMAT_XRGB8888;
 853                 else
 854                         format = WL_SHM_FORMAT_ARGB8888;
 855         }
 856
 857         data->buffer = wl_shm_pool_create_buffer(pool->pool, offset,
 858                                                  rectangle->width,
 859                                                  rectangle->height,
 860                                                  stride, format);
 861
 862         return surface;
 863 }
 864
 865 static cairo_surface_t *
 866 display_create_shm_surface(struct display *display,
 867                            struct rectangle *rectangle, uint32_t flags,
 868                            struct shm_pool *alternate_pool,
 869                            struct shm_surface_data **data_ret)
 870 {
 871         struct shm_surface_data *data;
 872         struct shm_pool *pool;
 873         cairo_surface_t *surface;
 874
 875         if (alternate_pool) {
 876                 shm_pool_reset(alternate_pool);
 877                 surface = display_create_shm_surface_from_pool(display,
 878                                                                rectangle,
 879                                                                flags,
 880                                                                alternate_pool);
 881                 if (surface) {
 882                         data = cairo_surface_get_user_data(surface,
 883                                                            &shm_surface_data_key);
 884                         goto out;
 885                 }
 886         }
 887
 888         pool = shm_pool_create(display,
 889                                data_length_for_shm_surface(rectangle));
 890         if (!pool)
 891                 return NULL;
 892
 893         surface =
 894                 display_create_shm_surface_from_pool(display, rectangle,
 895                                                      flags, pool);
 896
 897         if (!surface) {
 898                 shm_pool_destroy(pool);
 899                 return NULL;
 900         }
 901
 902         /* make sure we destroy the pool when the surface is destroyed */
 903         data = cairo_surface_get_user_data(surface, &shm_surface_data_key);
 904         data->pool = pool;
 905
 906 out:
 907         if (data_ret)
 908                 *data_ret = data;
 909
 910         return surface;
 911 }
 912
 913 static int
 914 check_size(struct rectangle *rect)
 915 {
 916         if (rect->width && rect->height)
 917                 return 0;
 918
 919         fprintf(stderr, "tried to create surface of "
 920                 "width: %d, height: %d\n", rect->width, rect->height);
 921         return -1;
 922 }
 923
 924 cairo_surface_t *
 925 display_create_surface(struct display *display,
 926                        struct wl_surface *surface,
 927                        struct rectangle *rectangle,
 928                        uint32_t flags)
 929 {
 930         if (check_size(rectangle) < 0)
 931                 return NULL;
 932
 933         assert(flags & SURFACE_SHM);
 934         return display_create_shm_surface(display, rectangle, flags,
 935                                           NULL, NULL);
 936 }
 937
 938 struct shm_surface_leaf {
 939         cairo_surface_t *cairo_surface;
 940         /* 'data' is automatically destroyed, when 'cairo_surface' is */
 941         struct shm_surface_data *data;
 942
 943         struct shm_pool *resize_pool;
 944         int busy;
 945 };
 946
 947 static void
 948 shm_surface_leaf_release(struct shm_surface_leaf *leaf)
 949 {
 950         if (leaf->cairo_surface)
 951                 cairo_surface_destroy(leaf->cairo_surface);
 952         /* leaf->data already destroyed via cairo private */
 953
 954         if (leaf->resize_pool)
 955                 shm_pool_destroy(leaf->resize_pool);
 956
 957         memset(leaf, 0, sizeof *leaf);
 958 }
 959
 960 #define MAX_LEAVES 3
 961
 962 struct shm_surface {
 963         struct toysurface base;
 964         struct display *display;
 965         struct wl_surface *surface;
 966         uint32_t flags;
 967         int dx, dy;
 968
 969         struct shm_surface_leaf leaf[MAX_LEAVES];
 970         struct shm_surface_leaf *current;
 971 };
 972
 973 static struct shm_surface *
 974 to_shm_surface(struct toysurface *base)
 975 {
 976         return container_of(base, struct shm_surface, base);
 977 }
 978
 979 static void
 980 shm_surface_buffer_state_debug(struct shm_surface *surface, const char *msg)
 981 {
 982 #ifdef DEBUG
 983         struct shm_surface_leaf *leaf;
 984         char bufs[MAX_LEAVES + 1];
 985         int i;
 986
 987         for (i = 0; i < MAX_LEAVES; i++) {
 988                 leaf = &surface->leaf[i];
 989
 990                 if (leaf->busy)
 991                         bufs[i] = 'b';
 992                 else if (leaf->cairo_surface)
 993                         bufs[i] = 'a';
 994                 else
 995                         bufs[i] = ' ';
 996         }
 997
 998         bufs[MAX_LEAVES] = '\0';
 999         DBG_OBJ(surface->surface, "%s, leaves [%s]\n", msg, bufs);
1000 #endif
1001 }
1002
1003 static void
1004 shm_surface_buffer_release(void *data, struct wl_buffer *buffer)
1005 {
1006         struct shm_surface *surface = data;
1007         struct shm_surface_leaf *leaf;
1008         int i;
1009         int free_found;
1010
1011         shm_surface_buffer_state_debug(surface, "buffer_release before");
1012
1013         for (i = 0; i < MAX_LEAVES; i++) {
1014                 leaf = &surface->leaf[i];
1015                 if (leaf->data && leaf->data->buffer == buffer) {
1016                         leaf->busy = 0;
1017                         break;
1018                 }
1019         }
1020         assert(i < MAX_LEAVES && "unknown buffer released");
1021
1022         /* Leave one free leaf with storage, release others */
1023         free_found = 0;
1024         for (i = 0; i < MAX_LEAVES; i++) {
1025                 leaf = &surface->leaf[i];
1026
1027                 if (!leaf->cairo_surface || leaf->busy)
1028                         continue;
1029
1030                 if (!free_found)
1031                         free_found = 1;
1032                 else
1033                         shm_surface_leaf_release(leaf);
1034         }
1035
1036         shm_surface_buffer_state_debug(surface, "buffer_release  after");
1037 }
1038
1039 static const struct wl_buffer_listener shm_surface_buffer_listener = {
1040         shm_surface_buffer_release
1041 };
1042
1043 static cairo_surface_t *
1044 shm_surface_prepare(struct toysurface *base, int dx, int dy,
1045                     int32_t width, int32_t height, uint32_t flags,
1046                     enum wl_output_transform buffer_transform, int32_t buffer_scale)
1047 {
1048         int resize_hint = !!(flags & SURFACE_HINT_RESIZE);
1049         struct shm_surface *surface = to_shm_surface(base);
1050         struct rectangle rect = { 0};
1051         struct shm_surface_leaf *leaf = NULL;
1052         int i;
1053
1054         surface->dx = dx;
1055         surface->dy = dy;
1056
1057         /* pick a free buffer, preferrably one that already has storage */
1058         for (i = 0; i < MAX_LEAVES; i++) {
1059                 if (surface->leaf[i].busy)
1060                         continue;
1061
1062                 if (!leaf || surface->leaf[i].cairo_surface)
1063                         leaf = &surface->leaf[i];
1064         }
1065         DBG_OBJ(surface->surface, "pick leaf %d\n",
1066                 (int)(leaf - &surface->leaf[0]));
1067
1068         if (!leaf) {
1069                 fprintf(stderr, "%s: all buffers are held by the server.\n",
1070                         __func__);
1071                 exit(1);
1072                 return NULL;
1073         }
1074
1075         if (!resize_hint && leaf->resize_pool) {
1076                 cairo_surface_destroy(leaf->cairo_surface);
1077                 leaf->cairo_surface = NULL;
1078                 shm_pool_destroy(leaf->resize_pool);
1079                 leaf->resize_pool = NULL;
1080         }
1081
1082         surface_to_buffer_size (buffer_transform, buffer_scale, &width, &height);
1083
1084         if (leaf->cairo_surface &&
1085             cairo_image_surface_get_width(leaf->cairo_surface) == width &&
1086             cairo_image_surface_get_height(leaf->cairo_surface) == height)
1087                 goto out;
1088
1089         if (leaf->cairo_surface)
1090                 cairo_surface_destroy(leaf->cairo_surface);
1091
1092 #ifdef USE_RESIZE_POOL
1093         if (resize_hint && !leaf->resize_pool) {
1094                 /* Create a big pool to allocate from, while continuously
1095                  * resizing. Mmapping a new pool in the server
1096                  * is relatively expensive, so reusing a pool performs
1097                  * better, but may temporarily reserve unneeded memory.
1098                  */
1099                 /* We should probably base this number on the output size. */
1100                 leaf->resize_pool = shm_pool_create(surface->display,
1101                                                     6 * 1024 * 1024);
1102         }
1103 #endif
1104
1105         rect.width = width;
1106         rect.height = height;
1107
1108         leaf->cairo_surface =
1109                 display_create_shm_surface(surface->display, &rect,
1110                                            surface->flags,
1111                                            leaf->resize_pool,
1112                                            &leaf->data);
1113         wl_buffer_add_listener(leaf->data->buffer,
1114                                &shm_surface_buffer_listener, surface);
1115
1116 out:
1117         surface->current = leaf;
1118
1119         return cairo_surface_reference(leaf->cairo_surface);
1120 }
1121
1122 static void
1123 shm_surface_swap(struct toysurface *base,
1124                  enum wl_output_transform buffer_transform, int32_t buffer_scale,
1125                  struct rectangle *server_allocation)
1126 {
1127         struct shm_surface *surface = to_shm_surface(base);
1128         struct shm_surface_leaf *leaf = surface->current;
1129
1130         server_allocation->width =
1131                 cairo_image_surface_get_width(leaf->cairo_surface);
1132         server_allocation->height =
1133                 cairo_image_surface_get_height(leaf->cairo_surface);
1134
1135         buffer_to_surface_size (buffer_transform, buffer_scale,
1136                                 &server_allocation->width,
1137                                 &server_allocation->height);
1138
1139         wl_surface_attach(surface->surface, leaf->data->buffer,
1140                           surface->dx, surface->dy);
1141         wl_surface_damage(surface->surface, 0, 0,
1142                           server_allocation->width, server_allocation->height);
1143         wl_surface_commit(surface->surface);
1144
1145         DBG_OBJ(surface->surface, "leaf %d busy\n",
1146                 (int)(leaf - &surface->leaf[0]));
1147
1148         leaf->busy = 1;
1149         surface->current = NULL;
1150 }
1151
1152 static int
1153 shm_surface_acquire(struct toysurface *base, EGLContext ctx)
1154 {
1155         return -1;
1156 }
1157
1158 static void
1159 shm_surface_release(struct toysurface *base)
1160 {
1161 }
1162
1163 static void
1164 shm_surface_destroy(struct toysurface *base)
1165 {
1166         struct shm_surface *surface = to_shm_surface(base);
1167         int i;
1168
1169         for (i = 0; i < MAX_LEAVES; i++)
1170                 shm_surface_leaf_release(&surface->leaf[i]);
1171
1172         free(surface);
1173 }
1174
1175 static struct toysurface *
1176 shm_surface_create(struct display *display, struct wl_surface *wl_surface,
1177                    uint32_t flags, struct rectangle *rectangle)
1178 {
1179         struct shm_surface *surface;
1180         DBG_OBJ(wl_surface, "\n");
1181
1182         surface = xmalloc(sizeof *surface);
1183         memset(surface, 0, sizeof *surface);
1184
1185         if (!surface)
1186                 return NULL;
1187
1188         surface->base.prepare = shm_surface_prepare;
1189         surface->base.swap = shm_surface_swap;
1190         surface->base.acquire = shm_surface_acquire;
1191         surface->base.release = shm_surface_release;
1192         surface->base.destroy = shm_surface_destroy;
1193
1194         surface->display = display;
1195         surface->surface = wl_surface;
1196         surface->flags = flags;
1197
1198         return &surface->base;
1199 }
1200
1201 /*
1202  * The following correspondences between file names and cursors was copied
1203  * from: https://bugs.kde.org/attachment.cgi?id=67313
1204  */
1205
1206 static const char *bottom_left_corners[] = {
1207         "bottom_left_corner",
1208         "sw-resize",
1209         "size_bdiag"
1210 };
1211
1212 static const char *bottom_right_corners[] = {
1213         "bottom_right_corner",
1214         "se-resize",
1215         "size_fdiag"
1216 };
1217
1218 static const char *bottom_sides[] = {
1219         "bottom_side",
1220         "s-resize",
1221         "size_ver"
1222 };
1223
1224 static const char *grabbings[] = {
1225         "grabbing",
1226         "closedhand",
1227         "208530c400c041818281048008011002"
1228 };
1229
1230 static const char *left_ptrs[] = {
1231         "left_ptr",
1232         "default",
1233         "top_left_arrow",
1234         "left-arrow"
1235 };
1236
1237 static const char *left_sides[] = {
1238         "left_side",
1239         "w-resize",
1240         "size_hor"
1241 };
1242
1243 static const char *right_sides[] = {
1244         "right_side",
1245         "e-resize",
1246         "size_hor"
1247 };
1248
1249 static const char *top_left_corners[] = {
1250         "top_left_corner",
1251         "nw-resize",
1252         "size_fdiag"
1253 };
1254
1255 static const char *top_right_corners[] = {
1256         "top_right_corner",
1257         "ne-resize",
1258         "size_bdiag"
1259 };
1260
1261 static const char *top_sides[] = {
1262         "top_side",
1263         "n-resize",
1264         "size_ver"
1265 };
1266
1267 static const char *xterms[] = {
1268         "xterm",
1269         "ibeam",
1270         "text"
1271 };
1272
1273 static const char *hand1s[] = {
1274         "hand1",
1275         "pointer",
1276         "pointing_hand",
1277         "e29285e634086352946a0e7090d73106"
1278 };
1279
1280 static const char *watches[] = {
1281         "watch",
1282         "wait",
1283         "0426c94ea35c87780ff01dc239897213"
1284 };
1285
1286 struct cursor_alternatives {
1287         const char **names;
1288         size_t count;
1289 };
1290
1291 static const struct cursor_alternatives cursors[] = {
1292         {bottom_left_corners, ARRAY_LENGTH(bottom_left_corners)},
1293         {bottom_right_corners, ARRAY_LENGTH(bottom_right_corners)},
1294         {bottom_sides, ARRAY_LENGTH(bottom_sides)},
1295         {grabbings, ARRAY_LENGTH(grabbings)},
1296         {left_ptrs, ARRAY_LENGTH(left_ptrs)},
1297         {left_sides, ARRAY_LENGTH(left_sides)},
1298         {right_sides, ARRAY_LENGTH(right_sides)},
1299         {top_left_corners, ARRAY_LENGTH(top_left_corners)},
1300         {top_right_corners, ARRAY_LENGTH(top_right_corners)},
1301         {top_sides, ARRAY_LENGTH(top_sides)},
1302         {xterms, ARRAY_LENGTH(xterms)},
1303         {hand1s, ARRAY_LENGTH(hand1s)},
1304         {watches, ARRAY_LENGTH(watches)},
1305 };
1306
1307 static void
1308 create_cursors(struct display *display)
1309 {
1310         struct weston_config *config;
1311         struct weston_config_section *s;
1312         int size;
1313         char *theme = NULL;
1314         unsigned int i, j;
1315         struct wl_cursor *cursor;
1316
1317         config = weston_config_parse("weston.ini");
1318         s = weston_config_get_section(config, "shell", NULL, NULL);
1319         weston_config_section_get_string(s, "cursor-theme", &theme, NULL);
1320         weston_config_section_get_int(s, "cursor-size", &size, 32);
1321         weston_config_destroy(config);
1322
1323         display->cursor_theme = wl_cursor_theme_load(theme, size, display->shm);
1324         display->cursors =
1325                 xmalloc(ARRAY_LENGTH(cursors) * sizeof display->cursors[0]);
1326
1327         for (i = 0; i < ARRAY_LENGTH(cursors); i++) {
1328                 cursor = NULL;
1329                 for (j = 0; !cursor && j < cursors[i].count; ++j)
1330                         cursor = wl_cursor_theme_get_cursor(
1331                             display->cursor_theme, cursors[i].names[j]);
1332
1333                 if (!cursor)
1334                         fprintf(stderr, "could not load cursor '%s'\n",
1335                                 cursors[i].names[0]);
1336
1337                 display->cursors[i] = cursor;
1338         }
1339 }
1340
1341 static void
1342 destroy_cursors(struct display *display)
1343 {
1344         wl_cursor_theme_destroy(display->cursor_theme);
1345         free(display->cursors);
1346 }
1347
1348 struct wl_cursor_image *
1349 display_get_pointer_image(struct display *display, int pointer)
1350 {
1351         struct wl_cursor *cursor = display->cursors[pointer];
1352
1353         return cursor ? cursor->images[0] : NULL;
1354 }
1355
1356 static void
1357 surface_flush(struct surface *surface)
1358 {
1359         if (!surface->cairo_surface)
1360                 return;
1361
1362         if (surface->opaque_region) {
1363                 wl_surface_set_opaque_region(surface->surface,
1364                                              surface->opaque_region);
1365                 wl_region_destroy(surface->opaque_region);
1366                 surface->opaque_region = NULL;
1367         }
1368
1369         if (surface->input_region) {
1370                 wl_surface_set_input_region(surface->surface,
1371                                             surface->input_region);
1372                 wl_region_destroy(surface->input_region);
1373                 surface->input_region = NULL;
1374         }
1375
1376         surface->toysurface->swap(surface->toysurface,
1377                                   surface->buffer_transform, surface->buffer_scale,
1378                                   &surface->server_allocation);
1379
1380         cairo_surface_destroy(surface->cairo_surface);
1381         surface->cairo_surface = NULL;
1382 }
1383
1384 int
1385 window_has_focus(struct window *window)
1386 {
1387         return window->focus_count > 0;
1388 }
1389
1390 static void
1391 window_flush(struct window *window)
1392 {
1393         struct surface *surface;
1394
1395         if (window->type == TYPE_NONE) {
1396                 window->type = TYPE_TOPLEVEL;
1397                 if (window->shell_surface)
1398                         wl_shell_surface_set_toplevel(window->shell_surface);
1399         }
1400
1401         wl_list_for_each(surface, &window->subsurface_list, link) {
1402                 if (surface == window->main_surface)
1403                         continue;
1404
1405                 surface_flush(surface);
1406         }
1407
1408         surface_flush(window->main_surface);
1409 }
1410
1411 struct display *
1412 window_get_display(struct window *window)
1413 {
1414         return window->display;
1415 }
1416
1417 static void
1418 surface_create_surface(struct surface *surface, int dx, int dy, uint32_t flags)
1419 {
1420         struct display *display = surface->window->display;
1421         struct rectangle allocation = surface->allocation;
1422
1423         if (!surface->toysurface && display->dpy &&
1424             surface->buffer_type == WINDOW_BUFFER_TYPE_EGL_WINDOW) {
1425                 surface->toysurface =
1426                         egl_window_surface_create(display,
1427                                                   surface->surface,
1428                                                   flags,
1429                                                   &allocation);
1430         }
1431
1432         if (!surface->toysurface)
1433                 surface->toysurface = shm_surface_create(display,
1434                                                          surface->surface,
1435                                                          flags, &allocation);
1436
1437         surface->cairo_surface = surface->toysurface->prepare(
1438                 surface->toysurface, dx, dy,
1439                 allocation.width, allocation.height, flags,
1440                 surface->buffer_transform, surface->buffer_scale);
1441 }
1442
1443 static void
1444 window_create_main_surface(struct window *window)
1445 {
1446         struct surface *surface = window->main_surface;
1447         uint32_t flags = 0;
1448         int dx = 0;
1449         int dy = 0;
1450
1451         if (window->resizing)
1452                 flags |= SURFACE_HINT_RESIZE;
1453
1454         if (window->preferred_format == WINDOW_PREFERRED_FORMAT_RGB565)
1455                 flags |= SURFACE_HINT_RGB565;
1456
1457         if (window->resize_edges & WINDOW_RESIZING_LEFT)
1458                 dx = surface->server_allocation.width -
1459                         surface->allocation.width;
1460
1461         if (window->resize_edges & WINDOW_RESIZING_TOP)
1462                 dy = surface->server_allocation.height -
1463                         surface->allocation.height;
1464
1465         window->resize_edges = 0;
1466
1467         surface_create_surface(surface, dx, dy, flags);
1468 }
1469
1470 int
1471 window_get_buffer_transform(struct window *window)
1472 {
1473         return window->main_surface->buffer_transform;
1474 }
1475
1476 void
1477 window_set_buffer_transform(struct window *window,
1478                             enum wl_output_transform transform)
1479 {
1480         window->main_surface->buffer_transform = transform;
1481         wl_surface_set_buffer_transform(window->main_surface->surface,
1482                                         transform);
1483 }
1484
1485 void
1486 window_set_buffer_scale(struct window *window,
1487                         int32_t scale)
1488 {
1489         window->main_surface->buffer_scale = scale;
1490         wl_surface_set_buffer_scale(window->main_surface->surface,
1491                                     scale);
1492 }
1493
1494 uint32_t
1495 window_get_buffer_scale(struct window *window)
1496 {
1497         return window->main_surface->buffer_scale;
1498 }
1499
1500 uint32_t
1501 window_get_output_scale(struct window *window)
1502 {
1503         struct window_output *window_output;
1504         struct window_output *window_output_tmp;
1505         int scale = 1;
1506
1507         wl_list_for_each_safe(window_output, window_output_tmp,
1508                               &window->window_output_list, link) {
1509                 if (window_output->output->scale > scale)
1510                         scale = window_output->output->scale;
1511         }
1512
1513         return scale;
1514 }
1515
1516 static void frame_destroy(struct frame *frame);
1517
1518 static void
1519 surface_destroy(struct surface *surface)
1520 {
1521         if (surface->frame_cb)
1522                 wl_callback_destroy(surface->frame_cb);
1523
1524         if (surface->input_region)
1525                 wl_region_destroy(surface->input_region);
1526
1527         if (surface->opaque_region)
1528                 wl_region_destroy(surface->opaque_region);
1529
1530         if (surface->subsurface)
1531                 wl_subsurface_destroy(surface->subsurface);
1532
1533         wl_surface_destroy(surface->surface);
1534
1535         if (surface->toysurface)
1536                 surface->toysurface->destroy(surface->toysurface);
1537
1538         wl_list_remove(&surface->link);
1539         free(surface);
1540 }
1541
1542 void
1543 window_destroy(struct window *window)
1544 {
1545         struct display *display = window->display;
1546         struct input *input;
1547         struct window_output *window_output;
1548         struct window_output *window_output_tmp;
1549
1550         wl_list_remove(&window->redraw_task.link);
1551
1552         wl_list_for_each(input, &display->input_list, link) {
1553                 if (input->touch_focus == window)
1554                         input->touch_focus = NULL;
1555                 if (input->pointer_focus == window)
1556                         input->pointer_focus = NULL;
1557                 if (input->keyboard_focus == window)
1558                         input->keyboard_focus = NULL;
1559                 if (input->focus_widget &&
1560                     input->focus_widget->window == window)
1561                         input->focus_widget = NULL;
1562         }
1563
1564         wl_list_for_each_safe(window_output, window_output_tmp,
1565                               &window->window_output_list, link) {
1566                 free (window_output);
1567         }
1568
1569         if (window->frame)
1570                 frame_destroy(window->frame);
1571
1572         if (window->shell_surface)
1573                 wl_shell_surface_destroy(window->shell_surface);
1574
1575         surface_destroy(window->main_surface);
1576
1577         wl_list_remove(&window->link);
1578
1579         free(window->title);
1580         free(window);
1581 }
1582
1583 static struct widget *
1584 widget_find_widget(struct widget *widget, int32_t x, int32_t y)
1585 {
1586         struct widget *child, *target;
1587
1588         wl_list_for_each(child, &widget->child_list, link) {
1589                 target = widget_find_widget(child, x, y);
1590                 if (target)
1591                         return target;
1592         }
1593
1594         if (widget->allocation.x <= x &&
1595             x < widget->allocation.x + widget->allocation.width &&
1596             widget->allocation.y <= y &&
1597             y < widget->allocation.y + widget->allocation.height) {
1598                 return widget;
1599         }
1600
1601         return NULL;
1602 }
1603
1604 static struct widget *
1605 window_find_widget(struct window *window, int32_t x, int32_t y)
1606 {
1607         struct surface *surface;
1608         struct widget *widget;
1609
1610         wl_list_for_each(surface, &window->subsurface_list, link) {
1611                 widget = widget_find_widget(surface->widget, x, y);
1612                 if (widget)
1613                         return widget;
1614         }
1615
1616         return NULL;
1617 }
1618
1619 static struct widget *
1620 widget_create(struct window *window, struct surface *surface, void *data)
1621 {
1622         struct widget *widget;
1623
1624         widget = xzalloc(sizeof *widget);
1625         widget->window = window;
1626         widget->surface = surface;
1627         widget->user_data = data;
1628         widget->allocation = surface->allocation;
1629         wl_list_init(&widget->child_list);
1630         widget->opaque = 0;
1631         widget->tooltip = NULL;
1632         widget->tooltip_count = 0;
1633         widget->default_cursor = CURSOR_LEFT_PTR;
1634
1635         return widget;
1636 }
1637
1638 struct widget *
1639 window_add_widget(struct window *window, void *data)
1640 {
1641         struct widget *widget;
1642
1643         widget = widget_create(window, window->main_surface, data);
1644         wl_list_init(&widget->link);
1645         window->main_surface->widget = widget;
1646
1647         return widget;
1648 }
1649
1650 struct widget *
1651 widget_add_widget(struct widget *parent, void *data)
1652 {
1653         struct widget *widget;
1654
1655         widget = widget_create(parent->window, parent->surface, data);
1656         wl_list_insert(parent->child_list.prev, &widget->link);
1657
1658         return widget;
1659 }
1660
1661 void
1662 widget_destroy(struct widget *widget)
1663 {
1664         struct display *display = widget->window->display;
1665         struct surface *surface = widget->surface;
1666         struct input *input;
1667
1668         /* Destroy the sub-surface along with the root widget */
1669         if (surface->widget == widget && surface->subsurface)
1670                 surface_destroy(widget->surface);
1671
1672         if (widget->tooltip) {
1673                 free(widget->tooltip);
1674                 widget->tooltip = NULL;
1675         }
1676
1677         wl_list_for_each(input, &display->input_list, link) {
1678                 if (input->focus_widget == widget)
1679                         input->focus_widget = NULL;
1680         }
1681
1682         wl_list_remove(&widget->link);
1683         free(widget);
1684 }
1685
1686 void
1687 widget_set_default_cursor(struct widget *widget, int cursor)
1688 {
1689         widget->default_cursor = cursor;
1690 }
1691
1692 void
1693 widget_get_allocation(struct widget *widget, struct rectangle *allocation)
1694 {
1695         *allocation = widget->allocation;
1696 }
1697
1698 void
1699 widget_set_size(struct widget *widget, int32_t width, int32_t height)
1700 {
1701         widget->allocation.width = width;
1702         widget->allocation.height = height;
1703 }
1704
1705 void
1706 widget_set_allocation(struct widget *widget,
1707                       int32_t x, int32_t y, int32_t width, int32_t height)
1708 {
1709         widget->allocation.x = x;
1710         widget->allocation.y = y;
1711         widget_set_size(widget, width, height);
1712 }
1713
1714 void
1715 widget_set_transparent(struct widget *widget, int transparent)
1716 {
1717         widget->opaque = !transparent;
1718 }
1719
1720 void *
1721 widget_get_user_data(struct widget *widget)
1722 {
1723         return widget->user_data;
1724 }
1725
1726 static cairo_surface_t *
1727 widget_get_cairo_surface(struct widget *widget)
1728 {
1729         struct surface *surface = widget->surface;
1730         struct window *window = widget->window;
1731
1732         if (!surface->cairo_surface) {
1733                 if (surface == window->main_surface)
1734                         window_create_main_surface(window);
1735                 else
1736                         surface_create_surface(surface, 0, 0, 0);
1737         }
1738
1739         return surface->cairo_surface;
1740 }
1741
1742 static void
1743 widget_cairo_update_transform(struct widget *widget, cairo_t *cr)
1744 {
1745         struct surface *surface = widget->surface;
1746         double angle;
1747         cairo_matrix_t m;
1748         enum wl_output_transform transform;
1749         int surface_width, surface_height;
1750         int translate_x, translate_y;
1751         int32_t scale;
1752
1753         surface_width = surface->allocation.width;
1754         surface_height = surface->allocation.height;
1755
1756         transform = surface->buffer_transform;
1757         scale = surface->buffer_scale;
1758
1759         switch (transform) {
1760         case WL_OUTPUT_TRANSFORM_FLIPPED:
1761         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
1762         case WL_OUTPUT_TRANSFORM_FLIPPED_180:
1763         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
1764                 cairo_matrix_init(&m, -1, 0, 0, 1, 0, 0);
1765                 break;
1766         default:
1767                 cairo_matrix_init_identity(&m);
1768                 break;
1769         }
1770
1771         switch (transform) {
1772         case WL_OUTPUT_TRANSFORM_NORMAL:
1773         default:
1774                 angle = 0;
1775                 translate_x = 0;
1776                 translate_y = 0;
1777                 break;
1778         case WL_OUTPUT_TRANSFORM_FLIPPED:
1779                 angle = 0;
1780                 translate_x = surface_width;
1781                 translate_y = 0;
1782                 break;
1783         case WL_OUTPUT_TRANSFORM_90:
1784                 angle = M_PI_2;
1785                 translate_x = surface_height;
1786                 translate_y = 0;
1787                 break;
1788         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
1789                 angle = M_PI_2;
1790                 translate_x = surface_height;
1791                 translate_y = surface_width;
1792                 break;
1793         case WL_OUTPUT_TRANSFORM_180:
1794                 angle = M_PI;
1795                 translate_x = surface_width;
1796                 translate_y = surface_height;
1797                 break;
1798         case WL_OUTPUT_TRANSFORM_FLIPPED_180:
1799                 angle = M_PI;
1800                 translate_x = 0;
1801                 translate_y = surface_height;
1802                 break;
1803         case WL_OUTPUT_TRANSFORM_270:
1804                 angle = M_PI + M_PI_2;
1805                 translate_x = 0;
1806                 translate_y = surface_width;
1807                 break;
1808         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
1809                 angle = M_PI + M_PI_2;
1810                 translate_x = 0;
1811                 translate_y = 0;
1812                 break;
1813         }
1814
1815         cairo_scale(cr, scale, scale);
1816         cairo_translate(cr, translate_x, translate_y);
1817         cairo_rotate(cr, angle);
1818         cairo_transform(cr, &m);
1819 }
1820
1821 cairo_t *
1822 widget_cairo_create(struct widget *widget)
1823 {
1824         struct surface *surface = widget->surface;
1825         cairo_surface_t *cairo_surface;
1826         cairo_t *cr;
1827
1828         cairo_surface = widget_get_cairo_surface(widget);
1829         cr = cairo_create(cairo_surface);
1830
1831         widget_cairo_update_transform(widget, cr);
1832
1833         cairo_translate(cr, -surface->allocation.x, -surface->allocation.y);
1834
1835         return cr;
1836 }
1837
1838 struct wl_surface *
1839 widget_get_wl_surface(struct widget *widget)
1840 {
1841         return widget->surface->surface;
1842 }
1843
1844 uint32_t
1845 widget_get_last_time(struct widget *widget)
1846 {
1847         return widget->surface->last_time;
1848 }
1849
1850 void
1851 widget_input_region_add(struct widget *widget, const struct rectangle *rect)
1852 {
1853         struct wl_compositor *comp = widget->window->display->compositor;
1854         struct surface *surface = widget->surface;
1855
1856         if (!surface->input_region)
1857                 surface->input_region = wl_compositor_create_region(comp);
1858
1859         if (rect) {
1860                 wl_region_add(surface->input_region,
1861                               rect->x, rect->y, rect->width, rect->height);
1862         }
1863 }
1864
1865 void
1866 widget_set_resize_handler(struct widget *widget,
1867                           widget_resize_handler_t handler)
1868 {
1869         widget->resize_handler = handler;
1870 }
1871
1872 void
1873 widget_set_redraw_handler(struct widget *widget,
1874                           widget_redraw_handler_t handler)
1875 {
1876         widget->redraw_handler = handler;
1877 }
1878
1879 void
1880 widget_set_enter_handler(struct widget *widget, widget_enter_handler_t handler)
1881 {
1882         widget->enter_handler = handler;
1883 }
1884
1885 void
1886 widget_set_leave_handler(struct widget *widget, widget_leave_handler_t handler)
1887 {
1888         widget->leave_handler = handler;
1889 }
1890
1891 void
1892 widget_set_motion_handler(struct widget *widget,
1893                           widget_motion_handler_t handler)
1894 {
1895         widget->motion_handler = handler;
1896 }
1897
1898 void
1899 widget_set_button_handler(struct widget *widget,
1900                           widget_button_handler_t handler)
1901 {
1902         widget->button_handler = handler;
1903 }
1904
1905 void
1906 widget_set_touch_up_handler(struct widget *widget,
1907                             widget_touch_up_handler_t handler)
1908 {
1909         widget->touch_up_handler = handler;
1910 }
1911
1912 void
1913 widget_set_touch_down_handler(struct widget *widget,
1914                               widget_touch_down_handler_t handler)
1915 {
1916         widget->touch_down_handler = handler;
1917 }
1918
1919 void
1920 widget_set_touch_motion_handler(struct widget *widget,
1921                                 widget_touch_motion_handler_t handler)
1922 {
1923         widget->touch_motion_handler = handler;
1924 }
1925
1926 void
1927 widget_set_touch_frame_handler(struct widget *widget,
1928                                widget_touch_frame_handler_t handler)
1929 {
1930         widget->touch_frame_handler = handler;
1931 }
1932
1933 void
1934 widget_set_touch_cancel_handler(struct widget *widget,
1935                                 widget_touch_cancel_handler_t handler)
1936 {
1937         widget->touch_cancel_handler = handler;
1938 }
1939
1940 void
1941 widget_set_axis_handler(struct widget *widget,
1942                         widget_axis_handler_t handler)
1943 {
1944         widget->axis_handler = handler;
1945 }
1946
1947 static void
1948 window_schedule_redraw_task(struct window *window);
1949
1950 void
1951 widget_schedule_redraw(struct widget *widget)
1952 {
1953         DBG_OBJ(widget->surface->surface, "widget %p\n", widget);
1954         widget->surface->redraw_needed = 1;
1955         window_schedule_redraw_task(widget->window);
1956 }
1957
1958 cairo_surface_t *
1959 window_get_surface(struct window *window)
1960 {
1961         cairo_surface_t *cairo_surface;
1962
1963         cairo_surface = widget_get_cairo_surface(window->main_surface->widget);
1964
1965         return cairo_surface_reference(cairo_surface);
1966 }
1967
1968 struct wl_surface *
1969 window_get_wl_surface(struct window *window)
1970 {
1971         return window->main_surface->surface;
1972 }
1973
1974 struct wl_shell_surface *
1975 window_get_wl_shell_surface(struct window *window)
1976 {
1977         return window->shell_surface;
1978 }
1979
1980 static void
1981 tooltip_redraw_handler(struct widget *widget, void *data)
1982 {
1983         cairo_t *cr;
1984         const int32_t r = 3;
1985         struct tooltip *tooltip = data;
1986         int32_t width, height;
1987
1988         cr = widget_cairo_create(widget);
1989         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1990         cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1991         cairo_paint(cr);
1992
1993         width = widget->allocation.width;
1994         height = widget->allocation.height;
1995         rounded_rect(cr, 0, 0, width, height, r);
1996
1997         cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1998         cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8);
1999         cairo_fill(cr);
2000
2001         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
2002         cairo_move_to(cr, 10, 16);
2003         cairo_show_text(cr, tooltip->entry);
2004         cairo_destroy(cr);
2005 }
2006
2007 static cairo_text_extents_t
2008 get_text_extents(struct tooltip *tooltip)
2009 {
2010         cairo_t *cr;
2011         cairo_text_extents_t extents;
2012
2013         /* Use the dummy_surface because tooltip's surface was not
2014          * created yet, and parent does not have a valid surface
2015          * outside repaint, either.
2016          */
2017         cr = cairo_create(tooltip->window->display->dummy_surface);
2018         cairo_text_extents(cr, tooltip->entry, &extents);
2019         cairo_destroy(cr);
2020
2021         return extents;
2022 }
2023
2024 static int
2025 window_create_tooltip(struct tooltip *tooltip)
2026 {
2027         struct widget *parent = tooltip->parent;
2028         struct display *display = parent->window->display;
2029         struct window *window;
2030         const int offset_y = 27;
2031         const int margin = 3;
2032         cairo_text_extents_t extents;
2033
2034         if (tooltip->widget)
2035                 return 0;
2036
2037         window = window_create_transient(display, parent->window, tooltip->x,
2038                                          tooltip->y + offset_y,
2039                                          WL_SHELL_SURFACE_TRANSIENT_INACTIVE);
2040         if (!window)
2041                 return -1;
2042
2043         tooltip->window = window;
2044         tooltip->widget = window_add_widget(tooltip->window, tooltip);
2045
2046         extents = get_text_extents(tooltip);
2047         widget_set_redraw_handler(tooltip->widget, tooltip_redraw_handler);
2048         window_schedule_resize(window, extents.width + 20, 20 + margin * 2);
2049
2050         return 0;
2051 }
2052
2053 void
2054 widget_destroy_tooltip(struct widget *parent)
2055 {
2056         struct tooltip *tooltip = parent->tooltip;
2057
2058         parent->tooltip_count = 0;
2059         if (!tooltip)
2060                 return;
2061
2062         if (tooltip->widget) {
2063                 widget_destroy(tooltip->widget);
2064                 window_destroy(tooltip->window);
2065                 tooltip->widget = NULL;
2066                 tooltip->window = NULL;
2067         }
2068
2069         close(tooltip->tooltip_fd);
2070         free(tooltip->entry);
2071         free(tooltip);
2072         parent->tooltip = NULL;
2073 }
2074
2075 static void
2076 tooltip_func(struct task *task, uint32_t events)
2077 {
2078         struct tooltip *tooltip =
2079                 container_of(task, struct tooltip, tooltip_task);
2080         uint64_t exp;
2081
2082         if (read(tooltip->tooltip_fd, &exp, sizeof (uint64_t)) != sizeof (uint64_t))
2083                 abort();
2084         window_create_tooltip(tooltip);
2085 }
2086
2087 #define TOOLTIP_TIMEOUT 500
2088 static int
2089 tooltip_timer_reset(struct tooltip *tooltip)
2090 {
2091         struct itimerspec its;
2092
2093         its.it_interval.tv_sec = 0;
2094         its.it_interval.tv_nsec = 0;
2095         its.it_value.tv_sec = TOOLTIP_TIMEOUT / 1000;
2096         its.it_value.tv_nsec = (TOOLTIP_TIMEOUT % 1000) * 1000 * 1000;
2097         if (timerfd_settime(tooltip->tooltip_fd, 0, &its, NULL) < 0) {
2098                 fprintf(stderr, "could not set timerfd\n: %m");
2099                 return -1;
2100         }
2101
2102         return 0;
2103 }
2104
2105 int
2106 widget_set_tooltip(struct widget *parent, char *entry, float x, float y)
2107 {
2108         struct tooltip *tooltip = parent->tooltip;
2109
2110         parent->tooltip_count++;
2111         if (tooltip) {
2112                 tooltip->x = x;
2113                 tooltip->y = y;
2114                 tooltip_timer_reset(tooltip);
2115                 return 0;
2116         }
2117
2118         /* the handler might be triggered too fast via input device motion, so
2119          * we need this check here to make sure tooltip is fully initialized */
2120         if (parent->tooltip_count > 1)
2121                 return 0;
2122
2123         tooltip = malloc(sizeof *tooltip);
2124         if (!tooltip)
2125                 return -1;
2126
2127         parent->tooltip = tooltip;
2128         tooltip->parent = parent;
2129         tooltip->widget = NULL;
2130         tooltip->window = NULL;
2131         tooltip->x = x;
2132         tooltip->y = y;
2133         tooltip->entry = strdup(entry);
2134         tooltip->tooltip_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
2135         if (tooltip->tooltip_fd < 0) {
2136                 fprintf(stderr, "could not create timerfd\n: %m");
2137                 return -1;
2138         }
2139
2140         tooltip->tooltip_task.run = tooltip_func;
2141         display_watch_fd(parent->window->display, tooltip->tooltip_fd,
2142                          EPOLLIN, &tooltip->tooltip_task);
2143         tooltip_timer_reset(tooltip);
2144
2145         return 0;
2146 }
2147
2148 static void
2149 workspace_manager_state(void *data,
2150                         struct workspace_manager *workspace_manager,
2151                         uint32_t current,
2152                         uint32_t count)
2153 {
2154         struct display *display = data;
2155
2156         display->workspace = current;
2157         display->workspace_count = count;
2158 }
2159
2160 static const struct workspace_manager_listener workspace_manager_listener = {
2161         workspace_manager_state
2162 };
2163
2164 static void
2165 frame_resize_handler(struct widget *widget,
2166                      int32_t width, int32_t height, void *data)
2167 {
2168         struct frame *frame = data;
2169         struct widget *child = frame->child;
2170         struct rectangle allocation;
2171         struct display *display = widget->window->display;
2172         struct surface *surface = widget->surface;
2173         struct frame_button * button;
2174         struct theme *t = display->theme;
2175         int x_l, x_r, y, w, h;
2176         int decoration_width, decoration_height;
2177         int opaque_margin, shadow_margin;
2178
2179         switch (widget->window->type) {
2180         case TYPE_FULLSCREEN:
2181                 decoration_width = 0;
2182                 decoration_height = 0;
2183
2184                 allocation.x = 0;
2185                 allocation.y = 0;
2186                 allocation.width = width;
2187                 allocation.height = height;
2188                 opaque_margin = 0;
2189
2190                 wl_list_for_each(button, &frame->buttons_list, link)
2191                         button->widget->opaque = 1;
2192                 break;
2193         case TYPE_MAXIMIZED:
2194                 decoration_width = t->width * 2;
2195                 decoration_height = t->width + t->titlebar_height;
2196
2197                 allocation.x = t->width;
2198                 allocation.y = t->titlebar_height;
2199                 allocation.width = width - decoration_width;
2200                 allocation.height = height - decoration_height;
2201
2202                 opaque_margin = 0;
2203
2204                 wl_list_for_each(button, &frame->buttons_list, link)
2205                         button->widget->opaque = 0;
2206                 break;
2207         default:
2208                 decoration_width = (t->width + t->margin) * 2;
2209                 decoration_height = t->width +
2210                         t->titlebar_height + t->margin * 2;
2211
2212                 allocation.x = t->width + t->margin;
2213                 allocation.y = t->titlebar_height + t->margin;
2214                 allocation.width = width - decoration_width;
2215                 allocation.height = height - decoration_height;
2216
2217                 opaque_margin = t->margin + t->frame_radius;
2218
2219                 wl_list_for_each(button, &frame->buttons_list, link)
2220                         button->widget->opaque = 0;
2221                 break;
2222         }
2223
2224         widget_set_allocation(child, allocation.x, allocation.y,
2225                               allocation.width, allocation.height);
2226
2227         if (child->resize_handler)
2228                 child->resize_handler(child,
2229                                       allocation.width,
2230                                       allocation.height,
2231                                       child->user_data);
2232
2233         width = child->allocation.width + decoration_width;
2234         height = child->allocation.height + decoration_height;
2235
2236         shadow_margin = widget->window->type == TYPE_MAXIMIZED ? 0 : t->margin;
2237
2238         surface->input_region =
2239                 wl_compositor_create_region(display->compositor);
2240         if (widget->window->type != TYPE_FULLSCREEN) {
2241                 wl_region_add(surface->input_region,
2242                               shadow_margin, shadow_margin,
2243                               width - 2 * shadow_margin,
2244                               height - 2 * shadow_margin);
2245         } else {
2246                 wl_region_add(surface->input_region, 0, 0, width, height);
2247         }
2248
2249         widget_set_allocation(widget, 0, 0, width, height);
2250
2251         if (child->opaque)
2252                 wl_region_add(surface->opaque_region,
2253                               opaque_margin, opaque_margin,
2254                               widget->allocation.width - 2 * opaque_margin,
2255                               widget->allocation.height - 2 * opaque_margin);
2256
2257         /* frame internal buttons */
2258         x_r = frame->widget->allocation.width - t->width - shadow_margin;
2259         x_l = t->width + shadow_margin;
2260         y = t->width + shadow_margin;
2261         wl_list_for_each(button, &frame->buttons_list, link) {
2262                 const int button_padding = 4;
2263                 w = cairo_image_surface_get_width(button->icon);
2264                 h = cairo_image_surface_get_height(button->icon);
2265
2266                 if (button->decoration == FRAME_BUTTON_FANCY)
2267                         w += 10;
2268
2269                 if (button->align == FRAME_BUTTON_LEFT) {
2270                         widget_set_allocation(button->widget,
2271                                               x_l, y , w + 1, h + 1);
2272                         x_l += w;
2273                         x_l += button_padding;
2274                 } else {
2275                         x_r -= w;
2276                         widget_set_allocation(button->widget,
2277                                               x_r, y , w + 1, h + 1);
2278                         x_r -= button_padding;
2279                 }
2280         }
2281 }
2282
2283 static int
2284 frame_button_enter_handler(struct widget *widget,
2285                            struct input *input, float x, float y, void *data)
2286 {
2287         struct frame_button *frame_button = data;
2288
2289         widget_schedule_redraw(frame_button->widget);
2290         frame_button->state = FRAME_BUTTON_OVER;
2291
2292         return CURSOR_LEFT_PTR;
2293 }
2294
2295 static void
2296 frame_button_leave_handler(struct widget *widget, struct input *input, void *data)
2297 {
2298         struct frame_button *frame_button = data;
2299
2300         widget_schedule_redraw(frame_button->widget);
2301         frame_button->state = FRAME_BUTTON_DEFAULT;
2302 }
2303
2304 static void
2305 frame_button_button_handler(struct widget *widget,
2306                             struct input *input, uint32_t time,
2307                             uint32_t button,
2308                             enum wl_pointer_button_state state, void *data)
2309 {
2310         struct frame_button *frame_button = data;
2311         struct window *window = widget->window;
2312         int was_pressed = (frame_button->state == FRAME_BUTTON_ACTIVE);
2313
2314         if (button != BTN_LEFT)
2315                 return;
2316
2317         switch (state) {
2318         case WL_POINTER_BUTTON_STATE_PRESSED:
2319                 frame_button->state = FRAME_BUTTON_ACTIVE;
2320                 widget_schedule_redraw(frame_button->widget);
2321
2322                 if (frame_button->type == FRAME_BUTTON_ICON)
2323                         window_show_frame_menu(window, input, time);
2324                 return;
2325         case WL_POINTER_BUTTON_STATE_RELEASED:
2326                 frame_button->state = FRAME_BUTTON_DEFAULT;
2327                 widget_schedule_redraw(frame_button->widget);
2328                 break;
2329         }
2330
2331         if (!was_pressed)
2332                 return;
2333
2334         switch (frame_button->type) {
2335         case FRAME_BUTTON_CLOSE:
2336                 if (window->close_handler)
2337                         window->close_handler(window->parent,
2338                                               window->user_data);
2339                 else
2340                         display_exit(window->display);
2341                 break;
2342         case FRAME_BUTTON_MINIMIZE:
2343                 fprintf(stderr,"Minimize stub\n");
2344                 break;
2345         case FRAME_BUTTON_MAXIMIZE:
2346                 window_set_maximized(window, window->type != TYPE_MAXIMIZED);
2347                 break;
2348         default:
2349                 /* Unknown operation */
2350                 break;
2351         }
2352 }
2353
2354 static void
2355 frame_button_touch_down_handler(struct widget *widget, struct input *input,
2356                                 uint32_t serial, uint32_t time, int32_t id,
2357                                 float x, float y, void *data)
2358 {
2359         struct frame_button *frame_button = data;
2360         struct window *window = widget->window;
2361
2362         switch (frame_button->type) {
2363         case FRAME_BUTTON_CLOSE:
2364                 if (window->close_handler)
2365                         window->close_handler(window->parent,
2366                                               window->user_data);
2367                 else
2368                         display_exit(window->display);
2369                 break;
2370         case FRAME_BUTTON_MINIMIZE:
2371                 fprintf(stderr,"Minimize stub\n");
2372                 break;
2373         case FRAME_BUTTON_MAXIMIZE:
2374                 window_set_maximized(window, window->type != TYPE_MAXIMIZED);
2375                 break;
2376         default:
2377                 /* Unknown operation */
2378                 break;
2379         }
2380 }
2381
2382
2383 static int
2384 frame_button_motion_handler(struct widget *widget,
2385                             struct input *input, uint32_t time,
2386                             float x, float y, void *data)
2387 {
2388         struct frame_button *frame_button = data;
2389         enum frame_button_pointer previous_button_state = frame_button->state;
2390
2391         /* only track state for a pressed button */
2392         if (input->grab != widget)
2393                 return CURSOR_LEFT_PTR;
2394
2395         if (x > widget->allocation.x &&
2396             x < (widget->allocation.x + widget->allocation.width) &&
2397             y > widget->allocation.y &&
2398             y < (widget->allocation.y + widget->allocation.height)) {
2399                 frame_button->state = FRAME_BUTTON_ACTIVE;
2400         } else {
2401                 frame_button->state = FRAME_BUTTON_DEFAULT;
2402         }
2403
2404         if (frame_button->state != previous_button_state)
2405                 widget_schedule_redraw(frame_button->widget);
2406
2407         return CURSOR_LEFT_PTR;
2408 }
2409
2410 static void
2411 frame_button_redraw_handler(struct widget *widget, void *data)
2412 {
2413         struct frame_button *frame_button = data;
2414         cairo_t *cr;
2415         int width, height, x, y;
2416
2417         x = widget->allocation.x;
2418         y = widget->allocation.y;
2419         width = widget->allocation.width;
2420         height = widget->allocation.height;
2421
2422         if (!width)
2423                 return;
2424         if (!height)
2425                 return;
2426         if (widget->opaque)
2427                 return;
2428
2429         cr = widget_cairo_create(widget);
2430
2431         if (frame_button->decoration == FRAME_BUTTON_FANCY) {
2432                 cairo_set_line_width(cr, 1);
2433
2434                 cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
2435                 cairo_rectangle (cr, x, y, 25, 16);
2436
2437                 cairo_stroke_preserve(cr);
2438
2439                 switch (frame_button->state) {
2440                 case FRAME_BUTTON_DEFAULT:
2441                         cairo_set_source_rgb(cr, 0.88, 0.88, 0.88);
2442                         break;
2443                 case FRAME_BUTTON_OVER:
2444                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
2445                         break;
2446                 case FRAME_BUTTON_ACTIVE:
2447                         cairo_set_source_rgb(cr, 0.7, 0.7, 0.7);
2448                         break;
2449                 }
2450
2451                 cairo_fill (cr);
2452
2453                 x += 4;
2454         }
2455
2456         cairo_set_source_surface(cr, frame_button->icon, x, y);
2457         cairo_paint(cr);
2458
2459         cairo_destroy(cr);
2460 }
2461
2462 static struct widget *
2463 frame_button_create(struct frame *frame, void *data, enum frame_button_action type,
2464         enum frame_button_align align, enum frame_button_decoration style)
2465 {
2466         struct frame_button *frame_button;
2467         const char *icon = data;
2468
2469         frame_button = xzalloc (sizeof *frame_button);
2470         frame_button->icon = cairo_image_surface_create_from_png(icon);
2471         frame_button->widget = widget_add_widget(frame->widget, frame_button);
2472         frame_button->frame = frame;
2473         frame_button->type = type;
2474         frame_button->align = align;
2475         frame_button->decoration = style;
2476
2477         wl_list_insert(frame->buttons_list.prev, &frame_button->link);
2478
2479         widget_set_redraw_handler(frame_button->widget, frame_button_redraw_handler);
2480         widget_set_enter_handler(frame_button->widget, frame_button_enter_handler);
2481         widget_set_leave_handler(frame_button->widget, frame_button_leave_handler);
2482         widget_set_touch_down_handler(frame_button->widget, frame_button_touch_down_handler);
2483         widget_set_button_handler(frame_button->widget, frame_button_button_handler);
2484         widget_set_motion_handler(frame_button->widget, frame_button_motion_handler);
2485         return frame_button->widget;
2486 }
2487
2488 static void
2489 frame_button_destroy(struct frame_button *frame_button)
2490 {
2491         widget_destroy(frame_button->widget);
2492         wl_list_remove(&frame_button->link);
2493         cairo_surface_destroy(frame_button->icon);
2494         free(frame_button);
2495
2496         return;
2497 }
2498
2499 static void
2500 frame_redraw_handler(struct widget *widget, void *data)
2501 {
2502         cairo_t *cr;
2503         struct window *window = widget->window;
2504         struct theme *t = window->display->theme;
2505         uint32_t flags = 0;
2506
2507         if (window->type == TYPE_FULLSCREEN)
2508                 return;
2509
2510         cr = widget_cairo_create(widget);
2511
2512         if (window->focus_count)
2513                 flags |= THEME_FRAME_ACTIVE;
2514         if (window->type == TYPE_MAXIMIZED)
2515                 flags |= THEME_FRAME_MAXIMIZED;
2516         theme_render_frame(t, cr, widget->allocation.width,
2517                            widget->allocation.height, window->title, flags);
2518
2519         cairo_destroy(cr);
2520 }
2521
2522 static int
2523 frame_get_pointer_image_for_location(struct frame *frame, struct input *input)
2524 {
2525         struct theme *t = frame->widget->window->display->theme;
2526         struct window *window = frame->widget->window;
2527         int location;
2528
2529         if (window->type != TYPE_TOPLEVEL)
2530                 return CURSOR_LEFT_PTR;
2531
2532         location = theme_get_location(t, input->sx, input->sy,
2533                                       frame->widget->allocation.width,
2534                                       frame->widget->allocation.height,
2535                                       window->type == TYPE_MAXIMIZED ?
2536                                       THEME_FRAME_MAXIMIZED : 0);
2537
2538         switch (location) {
2539         case THEME_LOCATION_RESIZING_TOP:
2540                 return CURSOR_TOP;
2541         case THEME_LOCATION_RESIZING_BOTTOM:
2542                 return CURSOR_BOTTOM;
2543         case THEME_LOCATION_RESIZING_LEFT:
2544                 return CURSOR_LEFT;
2545         case THEME_LOCATION_RESIZING_RIGHT:
2546                 return CURSOR_RIGHT;
2547         case THEME_LOCATION_RESIZING_TOP_LEFT:
2548                 return CURSOR_TOP_LEFT;
2549         case THEME_LOCATION_RESIZING_TOP_RIGHT:
2550                 return CURSOR_TOP_RIGHT;
2551         case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
2552                 return CURSOR_BOTTOM_LEFT;
2553         case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
2554                 return CURSOR_BOTTOM_RIGHT;
2555         case THEME_LOCATION_EXTERIOR:
2556         case THEME_LOCATION_TITLEBAR:
2557         default:
2558                 return CURSOR_LEFT_PTR;
2559         }
2560 }
2561
2562 static void
2563 frame_menu_func(struct window *window, int index, void *data)
2564 {
2565         struct display *display;
2566
2567         switch (index) {
2568         case 0: /* close */
2569                 if (window->close_handler)
2570                         window->close_handler(window->parent,
2571                                               window->user_data);
2572                 else
2573                         display_exit(window->display);
2574                 break;
2575         case 1: /* move to workspace above */
2576                 display = window->display;
2577                 if (display->workspace > 0)
2578                         workspace_manager_move_surface(
2579                                 display->workspace_manager,
2580                                 window->main_surface->surface,
2581                                 display->workspace - 1);
2582                 break;
2583         case 2: /* move to workspace below */
2584                 display = window->display;
2585                 if (display->workspace < display->workspace_count - 1)
2586                         workspace_manager_move_surface(
2587                                 display->workspace_manager,
2588                                 window->main_surface->surface,
2589                                 display->workspace + 1);
2590                 break;
2591         case 3: /* fullscreen */
2592                 /* we don't have a way to get out of fullscreen for now */
2593                 if (window->fullscreen_handler)
2594                         window->fullscreen_handler(window, window->user_data);
2595                 break;
2596         }
2597 }
2598
2599 void
2600 window_show_frame_menu(struct window *window,
2601                        struct input *input, uint32_t time)
2602 {
2603         int32_t x, y;
2604         int count;
2605
2606         static const char *entries[] = {
2607                 "Close",
2608                 "Move to workspace above", "Move to workspace below",
2609                 "Fullscreen"
2610         };
2611
2612         if (window->fullscreen_handler)
2613                 count = ARRAY_LENGTH(entries);
2614         else
2615                 count = ARRAY_LENGTH(entries) - 1;
2616
2617         input_get_position(input, &x, &y);
2618         window_show_menu(window->display, input, time, window,
2619                          x - 10, y - 10, frame_menu_func, entries, count);
2620 }
2621
2622 static int
2623 frame_enter_handler(struct widget *widget,
2624                     struct input *input, float x, float y, void *data)
2625 {
2626         return frame_get_pointer_image_for_location(data, input);
2627 }
2628
2629 static int
2630 frame_motion_handler(struct widget *widget,
2631                      struct input *input, uint32_t time,
2632                      float x, float y, void *data)
2633 {
2634         return frame_get_pointer_image_for_location(data, input);
2635 }
2636
2637 static void
2638 frame_button_handler(struct widget *widget,
2639                      struct input *input, uint32_t time,
2640                      uint32_t button, enum wl_pointer_button_state state,
2641                      void *data)
2642
2643 {
2644         struct frame *frame = data;
2645         struct window *window = widget->window;
2646         struct display *display = window->display;
2647         int location;
2648
2649         if (state != WL_POINTER_BUTTON_STATE_PRESSED)
2650                 return;
2651
2652         location = theme_get_location(display->theme, input->sx, input->sy,
2653                                       frame->widget->allocation.width,
2654                                       frame->widget->allocation.height,
2655                                       window->type == TYPE_MAXIMIZED ?
2656                                       THEME_FRAME_MAXIMIZED : 0);
2657
2658         if (window->display->shell && button == BTN_LEFT &&
2659             window->type == TYPE_TOPLEVEL) {
2660                 switch (location) {
2661                 case THEME_LOCATION_TITLEBAR:
2662                         if (!window->shell_surface)
2663                                 break;
2664                         input_ungrab(input);
2665                         wl_shell_surface_move(window->shell_surface,
2666                                               input_get_seat(input),
2667                                               display->serial);
2668                         break;
2669                 case THEME_LOCATION_RESIZING_TOP:
2670                 case THEME_LOCATION_RESIZING_BOTTOM:
2671                 case THEME_LOCATION_RESIZING_LEFT:
2672                 case THEME_LOCATION_RESIZING_RIGHT:
2673                 case THEME_LOCATION_RESIZING_TOP_LEFT:
2674                 case THEME_LOCATION_RESIZING_TOP_RIGHT:
2675                 case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
2676                 case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
2677                         if (!window->shell_surface)
2678                                 break;
2679                         input_ungrab(input);
2680
2681                         window->resizing = 1;
2682                         wl_shell_surface_resize(window->shell_surface,
2683                                                 input_get_seat(input),
2684                                                 display->serial, location);
2685                         break;
2686                 }
2687         } else if (button == BTN_RIGHT &&
2688                    (window->type == TYPE_TOPLEVEL ||
2689                     window->type == TYPE_MAXIMIZED)) {
2690                 window_show_frame_menu(window, input, time);
2691         }
2692 }
2693
2694 static void
2695 frame_touch_down_handler(struct widget *widget, struct input *input,
2696                          uint32_t serial, uint32_t time, int32_t id,
2697                          float x, float y, void *data)
2698 {
2699         struct window *window = widget->window;
2700         struct display *display = window->display;
2701
2702         wl_shell_surface_move(window->shell_surface,
2703                               input_get_seat(input),
2704                               display->serial);
2705 }
2706
2707 struct widget *
2708 frame_create(struct window *window, void *data)
2709 {
2710         struct frame *frame;
2711
2712         frame = xzalloc(sizeof *frame);
2713         frame->widget = window_add_widget(window, frame);
2714         frame->child = widget_add_widget(frame->widget, data);
2715
2716         widget_set_redraw_handler(frame->widget, frame_redraw_handler);
2717         widget_set_resize_handler(frame->widget, frame_resize_handler);
2718         widget_set_enter_handler(frame->widget, frame_enter_handler);
2719         widget_set_motion_handler(frame->widget, frame_motion_handler);
2720         widget_set_button_handler(frame->widget, frame_button_handler);
2721         widget_set_touch_down_handler(frame->widget, frame_touch_down_handler);
2722
2723         /* Create empty list for frame buttons */
2724         wl_list_init(&frame->buttons_list);
2725
2726         frame_button_create(frame, DATADIR "/weston/icon_window.png",
2727                 FRAME_BUTTON_ICON, FRAME_BUTTON_LEFT, FRAME_BUTTON_NONE);
2728
2729         frame_button_create(frame, DATADIR "/weston/sign_close.png",
2730                 FRAME_BUTTON_CLOSE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
2731
2732         frame_button_create(frame, DATADIR "/weston/sign_maximize.png",
2733                 FRAME_BUTTON_MAXIMIZE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
2734
2735         frame_button_create(frame, DATADIR "/weston/sign_minimize.png",
2736                 FRAME_BUTTON_MINIMIZE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
2737
2738         window->frame = frame;
2739
2740         return frame->child;
2741 }
2742
2743 void
2744 frame_set_child_size(struct widget *widget, int child_width, int child_height)
2745 {
2746         struct display *display = widget->window->display;
2747         struct theme *t = display->theme;
2748         int decoration_width, decoration_height;
2749         int width, height;
2750         int margin = widget->window->type == TYPE_MAXIMIZED ? 0 : t->margin;
2751
2752         if (widget->window->type != TYPE_FULLSCREEN) {
2753                 decoration_width = (t->width + margin) * 2;
2754                 decoration_height = t->width +
2755                         t->titlebar_height + margin * 2;
2756
2757                 width = child_width + decoration_width;
2758                 height = child_height + decoration_height;
2759         } else {
2760                 width = child_width;
2761                 height = child_height;
2762         }
2763
2764         window_schedule_resize(widget->window, width, height);
2765 }
2766
2767 static void
2768 frame_destroy(struct frame *frame)
2769 {
2770         struct frame_button *button, *tmp;
2771
2772         wl_list_for_each_safe(button, tmp, &frame->buttons_list, link)
2773                 frame_button_destroy(button);
2774
2775         /* frame->child must be destroyed by the application */
2776         widget_destroy(frame->widget);
2777         free(frame);
2778 }
2779
2780 static void
2781 input_set_focus_widget(struct input *input, struct widget *focus,
2782                        float x, float y)
2783 {
2784         struct widget *old, *widget;
2785         int cursor;
2786
2787         if (focus == input->focus_widget)
2788                 return;
2789
2790         old = input->focus_widget;
2791         if (old) {
2792                 widget = old;
2793                 if (input->grab)
2794                         widget = input->grab;
2795                 if (widget->leave_handler)
2796                         widget->leave_handler(old, input, widget->user_data);
2797                 input->focus_widget = NULL;
2798         }
2799
2800         if (focus) {
2801                 widget = focus;
2802                 if (input->grab)
2803                         widget = input->grab;
2804                 input->focus_widget = focus;
2805                 if (widget->enter_handler)
2806                         cursor = widget->enter_handler(focus, input, x, y,
2807                                                        widget->user_data);
2808                 else
2809                         cursor = widget->default_cursor;
2810
2811                 input_set_pointer_image(input, cursor);
2812         }
2813 }
2814
2815 void
2816 input_grab(struct input *input, struct widget *widget, uint32_t button)
2817 {
2818         input->grab = widget;
2819         input->grab_button = button;
2820 }
2821
2822 void
2823 input_ungrab(struct input *input)
2824 {
2825         struct widget *widget;
2826
2827         input->grab = NULL;
2828         if (input->pointer_focus) {
2829                 widget = window_find_widget(input->pointer_focus,
2830                                             input->sx, input->sy);
2831                 input_set_focus_widget(input, widget, input->sx, input->sy);
2832         }
2833 }
2834
2835 static void
2836 input_remove_pointer_focus(struct input *input)
2837 {
2838         struct window *window = input->pointer_focus;
2839
2840         if (!window)
2841                 return;
2842
2843         input_set_focus_widget(input, NULL, 0, 0);
2844
2845         input->pointer_focus = NULL;
2846         input->current_cursor = CURSOR_UNSET;
2847 }
2848
2849 static void
2850 pointer_handle_enter(void *data, struct wl_pointer *pointer,
2851                      uint32_t serial, struct wl_surface *surface,
2852                      wl_fixed_t sx_w, wl_fixed_t sy_w)
2853 {
2854         struct input *input = data;
2855         struct window *window;
2856         struct widget *widget;
2857         float sx = wl_fixed_to_double(sx_w);
2858         float sy = wl_fixed_to_double(sy_w);
2859
2860         if (!surface) {
2861                 /* enter event for a window we've just destroyed */
2862                 return;
2863         }
2864
2865         input->display->serial = serial;
2866         input->pointer_enter_serial = serial;
2867         input->pointer_focus = wl_surface_get_user_data(surface);
2868         window = input->pointer_focus;
2869
2870         if (window->resizing) {
2871                 window->resizing = 0;
2872                 /* Schedule a redraw to free the pool */
2873                 window_schedule_redraw(window);
2874         }
2875
2876         input->sx = sx;
2877         input->sy = sy;
2878
2879         widget = window_find_widget(window, sx, sy);
2880         input_set_focus_widget(input, widget, sx, sy);
2881 }
2882
2883 static void
2884 pointer_handle_leave(void *data, struct wl_pointer *pointer,
2885                      uint32_t serial, struct wl_surface *surface)
2886 {
2887         struct input *input = data;
2888
2889         input->display->serial = serial;
2890         input_remove_pointer_focus(input);
2891 }
2892
2893 static void
2894 pointer_handle_motion(void *data, struct wl_pointer *pointer,
2895                       uint32_t time, wl_fixed_t sx_w, wl_fixed_t sy_w)
2896 {
2897         struct input *input = data;
2898         struct window *window = input->pointer_focus;
2899         struct widget *widget;
2900         int cursor;
2901         float sx = wl_fixed_to_double(sx_w);
2902         float sy = wl_fixed_to_double(sy_w);
2903
2904         input->sx = sx;
2905         input->sy = sy;
2906
2907         if (!window)
2908                 return;
2909
2910         /* when making the window smaller - e.g. after a unmaximise we might
2911          * still have a pending motion event that the compositor has picked
2912          * based on the old surface dimensions
2913          */
2914         if (sx > window->main_surface->allocation.width ||
2915             sy > window->main_surface->allocation.height)
2916                 return;
2917
2918         if (!(input->grab && input->grab_button)) {
2919                 widget = window_find_widget(window, sx, sy);
2920                 input_set_focus_widget(input, widget, sx, sy);
2921         }
2922
2923         if (input->grab)
2924                 widget = input->grab;
2925         else
2926                 widget = input->focus_widget;
2927         if (widget) {
2928                 if (widget->motion_handler)
2929                         cursor = widget->motion_handler(input->focus_widget,
2930                                                         input, time, sx, sy,
2931                                                         widget->user_data);
2932                 else
2933                         cursor = widget->default_cursor;
2934         } else
2935                 cursor = CURSOR_LEFT_PTR;
2936
2937         input_set_pointer_image(input, cursor);
2938 }
2939
2940 static void
2941 pointer_handle_button(void *data, struct wl_pointer *pointer, uint32_t serial,
2942                       uint32_t time, uint32_t button, uint32_t state_w)
2943 {
2944         struct input *input = data;
2945         struct widget *widget;
2946         enum wl_pointer_button_state state = state_w;
2947
2948         input->display->serial = serial;
2949         if (input->focus_widget && input->grab == NULL &&
2950             state == WL_POINTER_BUTTON_STATE_PRESSED)
2951                 input_grab(input, input->focus_widget, button);
2952
2953         widget = input->grab;
2954         if (widget && widget->button_handler)
2955                 (*widget->button_handler)(widget,
2956                                           input, time,
2957                                           button, state,
2958                                           input->grab->user_data);
2959
2960         if (input->grab && input->grab_button == button &&
2961             state == WL_POINTER_BUTTON_STATE_RELEASED)
2962                 input_ungrab(input);
2963 }
2964
2965 static void
2966 pointer_handle_axis(void *data, struct wl_pointer *pointer,
2967                     uint32_t time, uint32_t axis, wl_fixed_t value)
2968 {
2969         struct input *input = data;
2970         struct widget *widget;
2971
2972         widget = input->focus_widget;
2973         if (input->grab)
2974                 widget = input->grab;
2975         if (widget && widget->axis_handler)
2976                 (*widget->axis_handler)(widget,
2977                                         input, time,
2978                                         axis, value,
2979                                         widget->user_data);
2980 }
2981
2982 static const struct wl_pointer_listener pointer_listener = {
2983         pointer_handle_enter,
2984         pointer_handle_leave,
2985         pointer_handle_motion,
2986         pointer_handle_button,
2987         pointer_handle_axis,
2988 };
2989
2990 static void
2991 input_remove_keyboard_focus(struct input *input)
2992 {
2993         struct window *window = input->keyboard_focus;
2994         struct itimerspec its;
2995
2996         its.it_interval.tv_sec = 0;
2997         its.it_interval.tv_nsec = 0;
2998         its.it_value.tv_sec = 0;
2999         its.it_value.tv_nsec = 0;
3000         timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
3001
3002         if (!window)
3003                 return;
3004
3005         window->focus_count--;
3006         if (window->keyboard_focus_handler)
3007                 (*window->keyboard_focus_handler)(window, NULL,
3008                                                   window->user_data);
3009
3010         input->keyboard_focus = NULL;
3011 }
3012
3013 static void
3014 keyboard_repeat_func(struct task *task, uint32_t events)
3015 {
3016         struct input *input =
3017                 container_of(task, struct input, repeat_task);
3018         struct window *window = input->keyboard_focus;
3019         uint64_t exp;
3020
3021         if (read(input->repeat_timer_fd, &exp, sizeof exp) != sizeof exp)
3022                 /* If we change the timer between the fd becoming
3023                  * readable and getting here, there'll be nothing to
3024                  * read and we get EAGAIN. */
3025                 return;
3026
3027         if (window && window->key_handler) {
3028                 (*window->key_handler)(window, input, input->repeat_time,
3029                                        input->repeat_key, input->repeat_sym,
3030                                        WL_KEYBOARD_KEY_STATE_PRESSED,
3031                                        window->user_data);
3032         }
3033 }
3034
3035 static void
3036 keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
3037                        uint32_t format, int fd, uint32_t size)
3038 {
3039         struct input *input = data;
3040         char *map_str;
3041
3042         if (!data) {
3043                 close(fd);
3044                 return;
3045         }
3046
3047         if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
3048                 close(fd);
3049                 return;
3050         }
3051
3052         map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
3053         if (map_str == MAP_FAILED) {
3054                 close(fd);
3055                 return;
3056         }
3057
3058         input->xkb.keymap = xkb_map_new_from_string(input->display->xkb_context,
3059                                                     map_str,
3060                                                     XKB_KEYMAP_FORMAT_TEXT_V1,
3061                                                     0);
3062         munmap(map_str, size);
3063         close(fd);
3064
3065         if (!input->xkb.keymap) {
3066                 fprintf(stderr, "failed to compile keymap\n");
3067                 return;
3068         }
3069
3070         input->xkb.state = xkb_state_new(input->xkb.keymap);
3071         if (!input->xkb.state) {
3072                 fprintf(stderr, "failed to create XKB state\n");
3073                 xkb_map_unref(input->xkb.keymap);
3074                 input->xkb.keymap = NULL;
3075                 return;
3076         }
3077
3078         input->xkb.control_mask =
3079                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Control");
3080         input->xkb.alt_mask =
3081                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Mod1");
3082         input->xkb.shift_mask =
3083                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Shift");
3084 }
3085
3086 static void
3087 keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
3088                       uint32_t serial, struct wl_surface *surface,
3089                       struct wl_array *keys)
3090 {
3091         struct input *input = data;
3092         struct window *window;
3093
3094         input->display->serial = serial;
3095         input->keyboard_focus = wl_surface_get_user_data(surface);
3096
3097         window = input->keyboard_focus;
3098         window->focus_count++;
3099         if (window->keyboard_focus_handler)
3100                 (*window->keyboard_focus_handler)(window,
3101                                                   input, window->user_data);
3102 }
3103
3104 static void
3105 keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,
3106                       uint32_t serial, struct wl_surface *surface)
3107 {
3108         struct input *input = data;
3109
3110         input->display->serial = serial;
3111         input_remove_keyboard_focus(input);
3112 }
3113
3114 static void
3115 keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
3116                     uint32_t serial, uint32_t time, uint32_t key,
3117                     uint32_t state_w)
3118 {
3119         struct input *input = data;
3120         struct window *window = input->keyboard_focus;
3121         uint32_t code, num_syms;
3122         enum wl_keyboard_key_state state = state_w;
3123         const xkb_keysym_t *syms;
3124         xkb_keysym_t sym;
3125         struct itimerspec its;
3126
3127         input->display->serial = serial;
3128         code = key + 8;
3129         if (!window || !input->xkb.state)
3130                 return;
3131
3132         num_syms = xkb_key_get_syms(input->xkb.state, code, &syms);
3133
3134         sym = XKB_KEY_NoSymbol;
3135         if (num_syms == 1)
3136                 sym = syms[0];
3137
3138         if (sym == XKB_KEY_F5 && input->modifiers == MOD_ALT_MASK) {
3139                 if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
3140                         window_set_maximized(window,
3141                                              window->type != TYPE_MAXIMIZED);
3142         } else if (sym == XKB_KEY_F11 &&
3143                    window->fullscreen_handler &&
3144                    state == WL_KEYBOARD_KEY_STATE_PRESSED) {
3145                 window->fullscreen_handler(window, window->user_data);
3146         } else if (sym == XKB_KEY_F4 &&
3147                    input->modifiers == MOD_ALT_MASK &&
3148                    state == WL_KEYBOARD_KEY_STATE_PRESSED) {
3149                 if (window->close_handler)
3150                         window->close_handler(window->parent,
3151                                               window->user_data);
3152                 else
3153                         display_exit(window->display);
3154         } else if (window->key_handler) {
3155                 (*window->key_handler)(window, input, time, key,
3156                                        sym, state, window->user_data);
3157         }
3158
3159         if (state == WL_KEYBOARD_KEY_STATE_RELEASED &&
3160             key == input->repeat_key) {
3161                 its.it_interval.tv_sec = 0;
3162                 its.it_interval.tv_nsec = 0;
3163                 its.it_value.tv_sec = 0;
3164                 its.it_value.tv_nsec = 0;
3165                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
3166         } else if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
3167                 input->repeat_sym = sym;
3168                 input->repeat_key = key;
3169                 input->repeat_time = time;
3170                 its.it_interval.tv_sec = 0;
3171                 its.it_interval.tv_nsec = 25 * 1000 * 1000;
3172                 its.it_value.tv_sec = 0;
3173                 its.it_value.tv_nsec = 400 * 1000 * 1000;
3174                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
3175         }
3176 }
3177
3178 static void
3179 keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
3180                           uint32_t serial, uint32_t mods_depressed,
3181                           uint32_t mods_latched, uint32_t mods_locked,
3182                           uint32_t group)
3183 {
3184         struct input *input = data;
3185         xkb_mod_mask_t mask;
3186
3187         /* If we're not using a keymap, then we don't handle PC-style modifiers */
3188         if (!input->xkb.keymap)
3189                 return;
3190
3191         xkb_state_update_mask(input->xkb.state, mods_depressed, mods_latched,
3192                               mods_locked, 0, 0, group);
3193         mask = xkb_state_serialize_mods(input->xkb.state,
3194                                         XKB_STATE_DEPRESSED |
3195                                         XKB_STATE_LATCHED);
3196         input->modifiers = 0;
3197         if (mask & input->xkb.control_mask)
3198                 input->modifiers |= MOD_CONTROL_MASK;
3199         if (mask & input->xkb.alt_mask)
3200                 input->modifiers |= MOD_ALT_MASK;
3201         if (mask & input->xkb.shift_mask)
3202                 input->modifiers |= MOD_SHIFT_MASK;
3203 }
3204
3205 static const struct wl_keyboard_listener keyboard_listener = {
3206         keyboard_handle_keymap,
3207         keyboard_handle_enter,
3208         keyboard_handle_leave,
3209         keyboard_handle_key,
3210         keyboard_handle_modifiers,
3211 };
3212
3213 static void
3214 touch_handle_down(void *data, struct wl_touch *wl_touch,
3215                   uint32_t serial, uint32_t time, struct wl_surface *surface,
3216                   int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
3217 {
3218         struct input *input = data;
3219         struct widget *widget;
3220         float sx = wl_fixed_to_double(x_w);
3221         float sy = wl_fixed_to_double(y_w);
3222
3223         input->display->serial = serial;
3224         input->touch_focus = wl_surface_get_user_data(surface);
3225         if (!input->touch_focus) {
3226                 DBG("Failed to find to touch focus for surface %p\n", surface);
3227                 return;
3228         }
3229
3230         widget = window_find_widget(input->touch_focus,
3231                                     wl_fixed_to_double(x_w),
3232                                     wl_fixed_to_double(y_w));
3233         if (widget) {
3234                 struct touch_point *tp = xmalloc(sizeof *tp);
3235                 if (tp) {
3236                         tp->id = id;
3237                         tp->widget = widget;
3238                         wl_list_insert(&input->touch_point_list, &tp->link);
3239
3240                         if (widget->touch_down_handler)
3241                                 (*widget->touch_down_handler)(widget, input,
3242                                                               serial, time, id,
3243                                                               sx, sy,
3244                                                               widget->user_data);
3245                 }
3246         }
3247 }
3248
3249 static void
3250 touch_handle_up(void *data, struct wl_touch *wl_touch,
3251                 uint32_t serial, uint32_t time, int32_t id)
3252 {
3253         struct input *input = data;
3254         struct touch_point *tp, *tmp;
3255
3256         if (!input->touch_focus) {
3257                 DBG("No touch focus found for touch up event!\n");
3258                 return;
3259         }
3260
3261         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3262                 if (tp->id != id)
3263                         continue;
3264
3265                 if (tp->widget->touch_up_handler)
3266                         (*tp->widget->touch_up_handler)(tp->widget, input, serial,
3267                                                         time, id,
3268                                                         tp->widget->user_data);
3269
3270                 wl_list_remove(&tp->link);
3271                 free(tp);
3272
3273                 return;
3274         }
3275 }
3276
3277 static void
3278 touch_handle_motion(void *data, struct wl_touch *wl_touch,
3279                     uint32_t time, int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
3280 {
3281         struct input *input = data;
3282         struct touch_point *tp;
3283         float sx = wl_fixed_to_double(x_w);
3284         float sy = wl_fixed_to_double(y_w);
3285
3286         DBG("touch_handle_motion: %i %i\n", id, wl_list_length(&input->touch_point_list));
3287
3288         if (!input->touch_focus) {
3289                 DBG("No touch focus found for touch motion event!\n");
3290                 return;
3291         }
3292
3293         wl_list_for_each(tp, &input->touch_point_list, link) {
3294                 if (tp->id != id)
3295                         continue;
3296
3297                 if (tp->widget->touch_motion_handler)
3298                         (*tp->widget->touch_motion_handler)(tp->widget, input, time,
3299                                                             id, sx, sy,
3300                                                             tp->widget->user_data);
3301                 return;
3302         }
3303 }
3304
3305 static void
3306 touch_handle_frame(void *data, struct wl_touch *wl_touch)
3307 {
3308         struct input *input = data;
3309         struct touch_point *tp, *tmp;
3310
3311         DBG("touch_handle_frame\n");
3312
3313         if (!input->touch_focus) {
3314                 DBG("No touch focus found for touch frame event!\n");
3315                 return;
3316         }
3317
3318         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3319                 if (tp->widget->touch_frame_handler)
3320                         (*tp->widget->touch_frame_handler)(tp->widget, input,
3321                                                            tp->widget->user_data);
3322
3323                 wl_list_remove(&tp->link);
3324                 free(tp);
3325         }
3326 }
3327
3328 static void
3329 touch_handle_cancel(void *data, struct wl_touch *wl_touch)
3330 {
3331         struct input *input = data;
3332         struct touch_point *tp, *tmp;
3333
3334         DBG("touch_handle_cancel\n");
3335
3336         if (!input->touch_focus) {
3337                 DBG("No touch focus found for touch cancel event!\n");
3338                 return;
3339         }
3340
3341         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3342                 if (tp->widget->touch_cancel_handler)
3343                         (*tp->widget->touch_cancel_handler)(tp->widget, input,
3344                                                             tp->widget->user_data);
3345
3346                 wl_list_remove(&tp->link);
3347                 free(tp);
3348         }
3349 }
3350
3351 static const struct wl_touch_listener touch_listener = {
3352         touch_handle_down,
3353         touch_handle_up,
3354         touch_handle_motion,
3355         touch_handle_frame,
3356         touch_handle_cancel,
3357 };
3358
3359 static void
3360 seat_handle_capabilities(void *data, struct wl_seat *seat,
3361                          enum wl_seat_capability caps)
3362 {
3363         struct input *input = data;
3364
3365         if ((caps & WL_SEAT_CAPABILITY_POINTER) && !input->pointer) {
3366                 input->pointer = wl_seat_get_pointer(seat);
3367                 wl_pointer_set_user_data(input->pointer, input);
3368                 wl_pointer_add_listener(input->pointer, &pointer_listener,
3369                                         input);
3370         } else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && input->pointer) {
3371                 wl_pointer_destroy(input->pointer);
3372                 input->pointer = NULL;
3373         }
3374
3375         if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
3376                 input->keyboard = wl_seat_get_keyboard(seat);
3377                 wl_keyboard_set_user_data(input->keyboard, input);
3378                 wl_keyboard_add_listener(input->keyboard, &keyboard_listener,
3379                                          input);
3380         } else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) {
3381                 wl_keyboard_destroy(input->keyboard);
3382                 input->keyboard = NULL;
3383         }
3384
3385         if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !input->touch) {
3386                 input->touch = wl_seat_get_touch(seat);
3387                 wl_touch_set_user_data(input->touch, input);
3388                 wl_touch_add_listener(input->touch, &touch_listener, input);
3389         } else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && input->touch) {
3390                 wl_touch_destroy(input->touch);
3391                 input->touch = NULL;
3392         }
3393 }
3394
3395 static void
3396 seat_handle_name(void *data, struct wl_seat *seat,
3397                  const char *name)
3398 {
3399
3400 }
3401
3402 static const struct wl_seat_listener seat_listener = {
3403         seat_handle_capabilities,
3404         seat_handle_name
3405 };
3406
3407 void
3408 input_get_position(struct input *input, int32_t *x, int32_t *y)
3409 {
3410         *x = input->sx;
3411         *y = input->sy;
3412 }
3413
3414 struct display *
3415 input_get_display(struct input *input)
3416 {
3417         return input->display;
3418 }
3419
3420 struct wl_seat *
3421 input_get_seat(struct input *input)
3422 {
3423         return input->seat;
3424 }
3425
3426 uint32_t
3427 input_get_modifiers(struct input *input)
3428 {
3429         return input->modifiers;
3430 }
3431
3432 struct widget *
3433 input_get_focus_widget(struct input *input)
3434 {
3435         return input->focus_widget;
3436 }
3437
3438 struct data_offer {
3439         struct wl_data_offer *offer;
3440         struct input *input;
3441         struct wl_array types;
3442         int refcount;
3443
3444         struct task io_task;
3445         int fd;
3446         data_func_t func;
3447         int32_t x, y;
3448         void *user_data;
3449 };
3450
3451 static void
3452 data_offer_offer(void *data, struct wl_data_offer *wl_data_offer, const char *type)
3453 {
3454         struct data_offer *offer = data;
3455         char **p;
3456
3457         p = wl_array_add(&offer->types, sizeof *p);
3458         *p = strdup(type);
3459 }
3460
3461 static const struct wl_data_offer_listener data_offer_listener = {
3462         data_offer_offer,
3463 };
3464
3465 static void
3466 data_offer_destroy(struct data_offer *offer)
3467 {
3468         char **p;
3469
3470         offer->refcount--;
3471         if (offer->refcount == 0) {
3472                 wl_data_offer_destroy(offer->offer);
3473                 for (p = offer->types.data; *p; p++)
3474                         free(*p);
3475                 wl_array_release(&offer->types);
3476                 free(offer);
3477         }
3478 }
3479
3480 static void
3481 data_device_data_offer(void *data,
3482                        struct wl_data_device *data_device,
3483                        struct wl_data_offer *_offer)
3484 {
3485         struct data_offer *offer;
3486
3487         offer = xmalloc(sizeof *offer);
3488
3489         wl_array_init(&offer->types);
3490         offer->refcount = 1;
3491         offer->input = data;
3492         offer->offer = _offer;
3493         wl_data_offer_add_listener(offer->offer,
3494                                    &data_offer_listener, offer);
3495 }
3496
3497 static void
3498 data_device_enter(void *data, struct wl_data_device *data_device,
3499                   uint32_t serial, struct wl_surface *surface,
3500                   wl_fixed_t x_w, wl_fixed_t y_w,
3501                   struct wl_data_offer *offer)
3502 {
3503         struct input *input = data;
3504         struct window *window;
3505         void *types_data;
3506         float x = wl_fixed_to_double(x_w);
3507         float y = wl_fixed_to_double(y_w);
3508         char **p;
3509
3510         input->pointer_enter_serial = serial;
3511         window = wl_surface_get_user_data(surface);
3512         input->pointer_focus = window;
3513
3514         if (offer) {
3515                 input->drag_offer = wl_data_offer_get_user_data(offer);
3516
3517                 p = wl_array_add(&input->drag_offer->types, sizeof *p);
3518                 *p = NULL;
3519
3520                 types_data = input->drag_offer->types.data;
3521         } else {
3522                 input->drag_offer = NULL;
3523                 types_data = NULL;
3524         }
3525
3526         window = input->pointer_focus;
3527         if (window->data_handler)
3528                 window->data_handler(window, input, x, y, types_data,
3529                                      window->user_data);
3530 }
3531
3532 static void
3533 data_device_leave(void *data, struct wl_data_device *data_device)
3534 {
3535         struct input *input = data;
3536
3537         if (input->drag_offer) {
3538                 data_offer_destroy(input->drag_offer);
3539                 input->drag_offer = NULL;
3540         }
3541 }
3542
3543 static void
3544 data_device_motion(void *data, struct wl_data_device *data_device,
3545                    uint32_t time, wl_fixed_t x_w, wl_fixed_t y_w)
3546 {
3547         struct input *input = data;
3548         struct window *window = input->pointer_focus;
3549         float x = wl_fixed_to_double(x_w);
3550         float y = wl_fixed_to_double(y_w);
3551         void *types_data;
3552
3553         input->sx = x;
3554         input->sy = y;
3555
3556         if (input->drag_offer)
3557                 types_data = input->drag_offer->types.data;
3558         else
3559                 types_data = NULL;
3560
3561         if (window->data_handler)
3562                 window->data_handler(window, input, x, y, types_data,
3563                                      window->user_data);
3564 }
3565
3566 static void
3567 data_device_drop(void *data, struct wl_data_device *data_device)
3568 {
3569         struct input *input = data;
3570         struct window *window = input->pointer_focus;
3571
3572         if (window->drop_handler)
3573                 window->drop_handler(window, input,
3574                                      input->sx, input->sy, window->user_data);
3575 }
3576
3577 static void
3578 data_device_selection(void *data,
3579                       struct wl_data_device *wl_data_device,
3580                       struct wl_data_offer *offer)
3581 {
3582         struct input *input = data;
3583         char **p;
3584
3585         if (input->selection_offer)
3586                 data_offer_destroy(input->selection_offer);
3587
3588         if (offer) {
3589                 input->selection_offer = wl_data_offer_get_user_data(offer);
3590                 p = wl_array_add(&input->selection_offer->types, sizeof *p);
3591                 *p = NULL;
3592         } else {
3593                 input->selection_offer = NULL;
3594         }
3595 }
3596
3597 static const struct wl_data_device_listener data_device_listener = {
3598         data_device_data_offer,
3599         data_device_enter,
3600         data_device_leave,
3601         data_device_motion,
3602         data_device_drop,
3603         data_device_selection
3604 };
3605
3606 static void
3607 input_set_pointer_image_index(struct input *input, int index)
3608 {
3609         struct wl_buffer *buffer;
3610         struct wl_cursor *cursor;
3611         struct wl_cursor_image *image;
3612
3613         if (!input->pointer)
3614                 return;
3615
3616         cursor = input->display->cursors[input->current_cursor];
3617         if (!cursor)
3618                 return;
3619
3620         if (index >= (int) cursor->image_count) {
3621                 fprintf(stderr, "cursor index out of range\n");
3622                 return;
3623         }
3624
3625         image = cursor->images[index];
3626         buffer = wl_cursor_image_get_buffer(image);
3627         if (!buffer)
3628                 return;
3629
3630         wl_pointer_set_cursor(input->pointer, input->pointer_enter_serial,
3631                               input->pointer_surface,
3632                               image->hotspot_x, image->hotspot_y);
3633         wl_surface_attach(input->pointer_surface, buffer, 0, 0);
3634         wl_surface_damage(input->pointer_surface, 0, 0,
3635                           image->width, image->height);
3636         wl_surface_commit(input->pointer_surface);
3637 }
3638
3639 static const struct wl_callback_listener pointer_surface_listener;
3640
3641 static void
3642 pointer_surface_frame_callback(void *data, struct wl_callback *callback,
3643                                uint32_t time)
3644 {
3645         struct input *input = data;
3646         struct wl_cursor *cursor;
3647         int i;
3648
3649         if (callback) {
3650                 assert(callback == input->cursor_frame_cb);
3651                 wl_callback_destroy(callback);
3652                 input->cursor_frame_cb = NULL;
3653         }
3654
3655         if (!input->pointer)
3656                 return;
3657
3658         if (input->current_cursor == CURSOR_BLANK) {
3659                 wl_pointer_set_cursor(input->pointer,
3660                                       input->pointer_enter_serial,
3661                                       NULL, 0, 0);
3662                 return;
3663         }
3664
3665         if (input->current_cursor == CURSOR_UNSET)
3666                 return;
3667         cursor = input->display->cursors[input->current_cursor];
3668         if (!cursor)
3669                 return;
3670
3671         /* FIXME We don't have the current time on the first call so we set
3672          * the animation start to the time of the first frame callback. */
3673         if (time == 0)
3674                 input->cursor_anim_start = 0;
3675         else if (input->cursor_anim_start == 0)
3676                 input->cursor_anim_start = time;
3677
3678         if (time == 0 || input->cursor_anim_start == 0)
3679                 i = 0;
3680         else
3681                 i = wl_cursor_frame(cursor, time - input->cursor_anim_start);
3682
3683         if (cursor->image_count > 1) {
3684                 input->cursor_frame_cb =
3685                         wl_surface_frame(input->pointer_surface);
3686                 wl_callback_add_listener(input->cursor_frame_cb,
3687                                          &pointer_surface_listener, input);
3688         }
3689
3690         input_set_pointer_image_index(input, i);
3691 }
3692
3693 static const struct wl_callback_listener pointer_surface_listener = {
3694         pointer_surface_frame_callback
3695 };
3696
3697 void
3698 input_set_pointer_image(struct input *input, int pointer)
3699 {
3700         int force = 0;
3701
3702         if (!input->pointer)
3703                 return;
3704
3705         if (input->pointer_enter_serial > input->cursor_serial)
3706                 force = 1;
3707
3708         if (!force && pointer == input->current_cursor)
3709                 return;
3710
3711         input->current_cursor = pointer;
3712         input->cursor_serial = input->pointer_enter_serial;
3713         if (!input->cursor_frame_cb)
3714                 pointer_surface_frame_callback(input, NULL, 0);
3715         else if (force) {
3716                 /* The current frame callback may be stuck if, for instance,
3717                  * the set cursor request was processed by the server after
3718                  * this client lost the focus. In this case the cursor surface
3719                  * might not be mapped and the frame callback wouldn't ever
3720                  * complete. Send a set_cursor and attach to try to map the
3721                  * cursor surface again so that the callback will finish */
3722                 input_set_pointer_image_index(input, 0);
3723         }
3724 }
3725
3726 struct wl_data_device *
3727 input_get_data_device(struct input *input)
3728 {
3729         return input->data_device;
3730 }
3731
3732 void
3733 input_set_selection(struct input *input,
3734                     struct wl_data_source *source, uint32_t time)
3735 {
3736         wl_data_device_set_selection(input->data_device, source, time);
3737 }
3738
3739 void
3740 input_accept(struct input *input, const char *type)
3741 {
3742         wl_data_offer_accept(input->drag_offer->offer,
3743                              input->pointer_enter_serial, type);
3744 }
3745
3746 static void
3747 offer_io_func(struct task *task, uint32_t events)
3748 {
3749         struct data_offer *offer =
3750                 container_of(task, struct data_offer, io_task);
3751         unsigned int len;
3752         char buffer[4096];
3753
3754         len = read(offer->fd, buffer, sizeof buffer);
3755         offer->func(buffer, len,
3756                     offer->x, offer->y, offer->user_data);
3757
3758         if (len == 0) {
3759                 close(offer->fd);
3760                 data_offer_destroy(offer);
3761         }
3762 }
3763
3764 static void
3765 data_offer_receive_data(struct data_offer *offer, const char *mime_type,
3766                         data_func_t func, void *user_data)
3767 {
3768         int p[2];
3769
3770         if (pipe2(p, O_CLOEXEC) == -1)
3771                 return;
3772
3773         wl_data_offer_receive(offer->offer, mime_type, p[1]);
3774         close(p[1]);
3775
3776         offer->io_task.run = offer_io_func;
3777         offer->fd = p[0];
3778         offer->func = func;
3779         offer->refcount++;
3780         offer->user_data = user_data;
3781
3782         display_watch_fd(offer->input->display,
3783                          offer->fd, EPOLLIN, &offer->io_task);
3784 }
3785
3786 void
3787 input_receive_drag_data(struct input *input, const char *mime_type,
3788                         data_func_t func, void *data)
3789 {
3790         data_offer_receive_data(input->drag_offer, mime_type, func, data);
3791         input->drag_offer->x = input->sx;
3792         input->drag_offer->y = input->sy;
3793 }
3794
3795 int
3796 input_receive_drag_data_to_fd(struct input *input,
3797                               const char *mime_type, int fd)
3798 {
3799         if (input->drag_offer)
3800                 wl_data_offer_receive(input->drag_offer->offer, mime_type, fd);
3801
3802         return 0;
3803 }
3804
3805 int
3806 input_receive_selection_data(struct input *input, const char *mime_type,
3807                              data_func_t func, void *data)
3808 {
3809         char **p;
3810
3811         if (input->selection_offer == NULL)
3812                 return -1;
3813
3814         for (p = input->selection_offer->types.data; *p; p++)
3815                 if (strcmp(mime_type, *p) == 0)
3816                         break;
3817
3818         if (*p == NULL)
3819                 return -1;
3820
3821         data_offer_receive_data(input->selection_offer,
3822                                 mime_type, func, data);
3823         return 0;
3824 }
3825
3826 int
3827 input_receive_selection_data_to_fd(struct input *input,
3828                                    const char *mime_type, int fd)
3829 {
3830         if (input->selection_offer)
3831                 wl_data_offer_receive(input->selection_offer->offer,
3832                                       mime_type, fd);
3833
3834         return 0;
3835 }
3836
3837 void
3838 window_move(struct window *window, struct input *input, uint32_t serial)
3839 {
3840         if (!window->shell_surface)
3841                 return;
3842
3843         wl_shell_surface_move(window->shell_surface, input->seat, serial);
3844 }
3845
3846 void
3847 window_touch_move(struct window *window, struct input *input, uint32_t serial)
3848 {
3849         if (!window->shell_surface)
3850                 return;
3851
3852         wl_shell_surface_move(window->shell_surface, input->seat,
3853                               window->display->serial);
3854 }
3855
3856 static void
3857 surface_set_synchronized(struct surface *surface)
3858 {
3859         if (!surface->subsurface)
3860                 return;
3861
3862         if (surface->synchronized)
3863                 return;
3864
3865         wl_subsurface_set_sync(surface->subsurface);
3866         surface->synchronized = 1;
3867 }
3868
3869 static void
3870 surface_set_synchronized_default(struct surface *surface)
3871 {
3872         if (!surface->subsurface)
3873                 return;
3874
3875         if (surface->synchronized == surface->synchronized_default)
3876                 return;
3877
3878         if (surface->synchronized_default)
3879                 wl_subsurface_set_sync(surface->subsurface);
3880         else
3881                 wl_subsurface_set_desync(surface->subsurface);
3882
3883         surface->synchronized = surface->synchronized_default;
3884 }
3885
3886 static void
3887 surface_resize(struct surface *surface)
3888 {
3889         struct widget *widget = surface->widget;
3890         struct wl_compositor *compositor = widget->window->display->compositor;
3891
3892         if (surface->input_region) {
3893                 wl_region_destroy(surface->input_region);
3894                 surface->input_region = NULL;
3895         }
3896
3897         if (surface->opaque_region)
3898                 wl_region_destroy(surface->opaque_region);
3899
3900         surface->opaque_region = wl_compositor_create_region(compositor);
3901
3902         if (widget->resize_handler)
3903                 widget->resize_handler(widget,
3904                                        widget->allocation.width,
3905                                        widget->allocation.height,
3906                                        widget->user_data);
3907
3908         if (surface->subsurface &&
3909             (surface->allocation.x != widget->allocation.x ||
3910              surface->allocation.y != widget->allocation.y)) {
3911                 wl_subsurface_set_position(surface->subsurface,
3912                                            widget->allocation.x,
3913                                            widget->allocation.y);
3914         }
3915         if (surface->allocation.width != widget->allocation.width ||
3916             surface->allocation.height != widget->allocation.height) {
3917                 window_schedule_redraw(widget->window);
3918         }
3919         surface->allocation = widget->allocation;
3920
3921         if (widget->opaque)
3922                 wl_region_add(surface->opaque_region, 0, 0,
3923                               widget->allocation.width,
3924                               widget->allocation.height);
3925 }
3926
3927 static void
3928 hack_prevent_EGL_sub_surface_deadlock(struct window *window)
3929 {
3930         /*
3931          * This hack should be removed, when EGL respects
3932          * eglSwapInterval(0).
3933          *
3934          * If this window has sub-surfaces, especially a free-running
3935          * EGL-widget, we need to post the parent surface once with
3936          * all the old state to guarantee, that the EGL-widget will
3937          * receive its frame callback soon. Otherwise, a forced call
3938          * to eglSwapBuffers may end up blocking, waiting for a frame
3939          * event that will never come, because we will commit the parent
3940          * surface with all new state only after eglSwapBuffers returns.
3941          *
3942          * This assumes, that:
3943          * 1. When the EGL widget's resize hook is called, it pauses.
3944          * 2. When the EGL widget's redraw hook is called, it forces a
3945          *    repaint and a call to eglSwapBuffers(), and maybe resumes.
3946          * In a single threaded application condition 1 is a no-op.
3947          *
3948          * XXX: This should actually be after the surface_resize() calls,
3949          * but cannot, because then it would commit the incomplete state
3950          * accumulated from the widget resize hooks.
3951          */
3952         if (window->subsurface_list.next != &window->main_surface->link ||
3953             window->subsurface_list.prev != &window->main_surface->link)
3954                 wl_surface_commit(window->main_surface->surface);
3955 }
3956
3957 static void
3958 idle_resize(struct window *window)
3959 {
3960         struct surface *surface;
3961
3962         window->resize_needed = 0;
3963         window->redraw_needed = 1;
3964
3965         DBG("from %dx%d to %dx%d\n",
3966             window->main_surface->server_allocation.width,
3967             window->main_surface->server_allocation.height,
3968             window->pending_allocation.width,
3969             window->pending_allocation.height);
3970
3971         hack_prevent_EGL_sub_surface_deadlock(window);
3972
3973         widget_set_allocation(window->main_surface->widget,
3974                               window->pending_allocation.x,
3975                               window->pending_allocation.y,
3976                               window->pending_allocation.width,
3977                               window->pending_allocation.height);
3978
3979         surface_resize(window->main_surface);
3980
3981         /* The main surface is in the list, too. Main surface's
3982          * resize_handler is responsible for calling widget_set_allocation()
3983          * on all sub-surface root widgets, so they will be resized
3984          * properly.
3985          */
3986         wl_list_for_each(surface, &window->subsurface_list, link) {
3987                 if (surface == window->main_surface)
3988                         continue;
3989
3990                 surface_set_synchronized(surface);
3991                 surface_resize(surface);
3992         }
3993 }
3994
3995 void
3996 window_schedule_resize(struct window *window, int width, int height)
3997 {
3998         window->pending_allocation.x = 0;
3999         window->pending_allocation.y = 0;
4000         window->pending_allocation.width = width;
4001         window->pending_allocation.height = height;
4002
4003         if (window->min_allocation.width == 0)
4004                 window->min_allocation = window->pending_allocation;
4005         if (window->pending_allocation.width < window->min_allocation.width)
4006                 window->pending_allocation.width = window->min_allocation.width;
4007         if (window->pending_allocation.height < window->min_allocation.height)
4008                 window->pending_allocation.height = window->min_allocation.height;
4009
4010         window->resize_needed = 1;
4011         window_schedule_redraw(window);
4012 }
4013
4014 void
4015 widget_schedule_resize(struct widget *widget, int32_t width, int32_t height)
4016 {
4017         window_schedule_resize(widget->window, width, height);
4018 }
4019
4020 static void
4021 handle_ping(void *data, struct wl_shell_surface *shell_surface,
4022                                                         uint32_t serial)
4023 {
4024         wl_shell_surface_pong(shell_surface, serial);
4025 }
4026
4027 static void
4028 handle_configure(void *data, struct wl_shell_surface *shell_surface,
4029                  uint32_t edges, int32_t width, int32_t height)
4030 {
4031         struct window *window = data;
4032
4033         window->resize_edges = edges;
4034         window_schedule_resize(window, width, height);
4035 }
4036
4037 static void
4038 menu_destroy(struct menu *menu)
4039 {
4040         widget_destroy(menu->widget);
4041         window_destroy(menu->window);
4042         free(menu);
4043 }
4044
4045 static void
4046 handle_popup_done(void *data, struct wl_shell_surface *shell_surface)
4047 {
4048         struct window *window = data;
4049         struct menu *menu = window->main_surface->widget->user_data;
4050
4051         /* FIXME: Need more context in this event, at least the input
4052          * device.  Or just use wl_callback.  And this really needs to
4053          * be a window vfunc that the menu can set.  And we need the
4054          * time. */
4055
4056         input_ungrab(menu->input);
4057         menu_destroy(menu);
4058 }
4059
4060 static const struct wl_shell_surface_listener shell_surface_listener = {
4061         handle_ping,
4062         handle_configure,
4063         handle_popup_done
4064 };
4065
4066 void
4067 window_get_allocation(struct window *window,
4068                       struct rectangle *allocation)
4069 {
4070         *allocation = window->main_surface->allocation;
4071 }
4072
4073 static void
4074 widget_redraw(struct widget *widget)
4075 {
4076         struct widget *child;
4077
4078         if (widget->redraw_handler)
4079                 widget->redraw_handler(widget, widget->user_data);
4080         wl_list_for_each(child, &widget->child_list, link)
4081                 widget_redraw(child);
4082 }
4083
4084 static void
4085 frame_callback(void *data, struct wl_callback *callback, uint32_t time)
4086 {
4087         struct surface *surface = data;
4088
4089         assert(callback == surface->frame_cb);
4090         DBG_OBJ(callback, "done\n");
4091         wl_callback_destroy(callback);
4092         surface->frame_cb = NULL;
4093
4094         surface->last_time = time;
4095
4096         if (surface->redraw_needed || surface->window->redraw_needed) {
4097                 DBG_OBJ(surface->surface, "window_schedule_redraw_task\n");
4098                 window_schedule_redraw_task(surface->window);
4099         }
4100 }
4101
4102 static const struct wl_callback_listener listener = {
4103         frame_callback
4104 };
4105
4106 static void
4107 surface_redraw(struct surface *surface)
4108 {
4109         DBG_OBJ(surface->surface, "begin\n");
4110
4111         if (!surface->window->redraw_needed && !surface->redraw_needed)
4112                 return;
4113
4114         /* Whole-window redraw forces a redraw even if the previous has
4115          * not yet hit the screen.
4116          */
4117         if (surface->frame_cb) {
4118                 if (!surface->window->redraw_needed)
4119                         return;
4120
4121                 DBG_OBJ(surface->frame_cb, "cancelled\n");
4122                 wl_callback_destroy(surface->frame_cb);
4123         }
4124
4125         surface->frame_cb = wl_surface_frame(surface->surface);
4126         wl_callback_add_listener(surface->frame_cb, &listener, surface);
4127         DBG_OBJ(surface->frame_cb, "new\n");
4128
4129         surface->redraw_needed = 0;
4130         DBG_OBJ(surface->surface, "-> widget_redraw\n");
4131         widget_redraw(surface->widget);
4132         DBG_OBJ(surface->surface, "done\n");
4133 }
4134
4135 static void
4136 idle_redraw(struct task *task, uint32_t events)
4137 {
4138         struct window *window = container_of(task, struct window, redraw_task);
4139         struct surface *surface;
4140
4141         DBG(" --------- \n");
4142
4143         wl_list_init(&window->redraw_task.link);
4144         window->redraw_task_scheduled = 0;
4145
4146         if (window->resize_needed) {
4147                 /* throttle resizing to the main surface display */
4148                 if (window->main_surface->frame_cb) {
4149                         DBG_OBJ(window->main_surface->frame_cb, "pending\n");
4150                         return;
4151                 }
4152
4153                 idle_resize(window);
4154         }
4155
4156         wl_list_for_each(surface, &window->subsurface_list, link)
4157                 surface_redraw(surface);
4158
4159         window->redraw_needed = 0;
4160         window_flush(window);
4161
4162         wl_list_for_each(surface, &window->subsurface_list, link)
4163                 surface_set_synchronized_default(surface);
4164 }
4165
4166 static void
4167 window_schedule_redraw_task(struct window *window)
4168 {
4169         if (window->configure_requests)
4170                 return;
4171         if (!window->redraw_task_scheduled) {
4172                 window->redraw_task.run = idle_redraw;
4173                 display_defer(window->display, &window->redraw_task);
4174                 window->redraw_task_scheduled = 1;
4175         }
4176 }
4177
4178 void
4179 window_schedule_redraw(struct window *window)
4180 {
4181         struct surface *surface;
4182
4183         DBG_OBJ(window->main_surface->surface, "window %p\n", window);
4184
4185         wl_list_for_each(surface, &window->subsurface_list, link)
4186                 surface->redraw_needed = 1;
4187
4188         window_schedule_redraw_task(window);
4189 }
4190
4191 int
4192 window_is_fullscreen(struct window *window)
4193 {
4194         return window->type == TYPE_FULLSCREEN;
4195 }
4196
4197 static void
4198 configure_request_completed(void *data, struct wl_callback *callback, uint32_t  time)
4199 {
4200         struct window *window = data;
4201
4202         wl_callback_destroy(callback);
4203         window->configure_requests--;
4204
4205         if (!window->configure_requests)
4206                 window_schedule_redraw(window);
4207 }
4208
4209 static struct wl_callback_listener configure_request_listener = {
4210         configure_request_completed,
4211 };
4212
4213 static void
4214 window_defer_redraw_until_configure(struct window* window)
4215 {
4216         struct wl_callback *callback;
4217
4218         if (window->redraw_task_scheduled) {
4219                 wl_list_remove(&window->redraw_task.link);
4220                 window->redraw_task_scheduled = 0;
4221         }
4222
4223         callback = wl_display_sync(window->display->display);
4224         wl_callback_add_listener(callback, &configure_request_listener, window);
4225         window->configure_requests++;
4226 }
4227
4228 void
4229 window_set_fullscreen(struct window *window, int fullscreen)
4230 {
4231         if (!window->display->shell)
4232                 return;
4233
4234         if ((window->type == TYPE_FULLSCREEN) == fullscreen)
4235                 return;
4236
4237         if (fullscreen) {
4238                 window->saved_type = window->type;
4239                 if (window->type == TYPE_TOPLEVEL) {
4240                         window->saved_allocation = window->main_surface->allocation;
4241                 }
4242                 window->type = TYPE_FULLSCREEN;
4243                 wl_shell_surface_set_fullscreen(window->shell_surface,
4244                                                 window->fullscreen_method,
4245                                                 0, NULL);
4246                 window_defer_redraw_until_configure (window);
4247         } else {
4248                 if (window->saved_type == TYPE_MAXIMIZED) {
4249                         window_set_maximized(window, 1);
4250                 } else {
4251                         window->type = TYPE_TOPLEVEL;
4252                         wl_shell_surface_set_toplevel(window->shell_surface);
4253                         window_schedule_resize(window,
4254                                                    window->saved_allocation.width,
4255                                                    window->saved_allocation.height);
4256                 }
4257
4258         }
4259 }
4260
4261 void
4262 window_set_fullscreen_method(struct window *window,
4263                              enum wl_shell_surface_fullscreen_method method)
4264 {
4265         window->fullscreen_method = method;
4266 }
4267
4268 int
4269 window_is_maximized(struct window *window)
4270 {
4271         return window->type == TYPE_MAXIMIZED;
4272 }
4273
4274 void
4275 window_set_maximized(struct window *window, int maximized)
4276 {
4277         if (!window->display->shell)
4278                 return;
4279
4280         if ((window->type == TYPE_MAXIMIZED) == maximized)
4281                 return;
4282
4283         if (window->type == TYPE_TOPLEVEL) {
4284                 window->saved_allocation = window->main_surface->allocation;
4285                 wl_shell_surface_set_maximized(window->shell_surface, NULL);
4286                 window->type = TYPE_MAXIMIZED;
4287                 window_defer_redraw_until_configure(window);
4288         } else if (window->type == TYPE_FULLSCREEN) {
4289                 wl_shell_surface_set_maximized(window->shell_surface, NULL);
4290                 window->type = TYPE_MAXIMIZED;
4291                 window_defer_redraw_until_configure(window);
4292         } else {
4293                 wl_shell_surface_set_toplevel(window->shell_surface);
4294                 window->type = TYPE_TOPLEVEL;
4295                 window_schedule_resize(window,
4296                                        window->saved_allocation.width,
4297                                        window->saved_allocation.height);
4298         }
4299 }
4300
4301 void
4302 window_set_user_data(struct window *window, void *data)
4303 {
4304         window->user_data = data;
4305 }
4306
4307 void *
4308 window_get_user_data(struct window *window)
4309 {
4310         return window->user_data;
4311 }
4312
4313 void
4314 window_set_key_handler(struct window *window,
4315                        window_key_handler_t handler)
4316 {
4317         window->key_handler = handler;
4318 }
4319
4320 void
4321 window_set_keyboard_focus_handler(struct window *window,
4322                                   window_keyboard_focus_handler_t handler)
4323 {
4324         window->keyboard_focus_handler = handler;
4325 }
4326
4327 void
4328 window_set_data_handler(struct window *window, window_data_handler_t handler)
4329 {
4330         window->data_handler = handler;
4331 }
4332
4333 void
4334 window_set_drop_handler(struct window *window, window_drop_handler_t handler)
4335 {
4336         window->drop_handler = handler;
4337 }
4338
4339 void
4340 window_set_close_handler(struct window *window,
4341                          window_close_handler_t handler)
4342 {
4343         window->close_handler = handler;
4344 }
4345
4346 void
4347 window_set_fullscreen_handler(struct window *window,
4348                               window_fullscreen_handler_t handler)
4349 {
4350         window->fullscreen_handler = handler;
4351 }
4352
4353 void
4354 window_set_output_handler(struct window *window,
4355                           window_output_handler_t handler)
4356 {
4357         window->output_handler = handler;
4358 }
4359
4360 void
4361 window_set_title(struct window *window, const char *title)
4362 {
4363         free(window->title);
4364         window->title = strdup(title);
4365         if (window->shell_surface)
4366                 wl_shell_surface_set_title(window->shell_surface, title);
4367 }
4368
4369 const char *
4370 window_get_title(struct window *window)
4371 {
4372         return window->title;
4373 }
4374
4375 void
4376 window_set_text_cursor_position(struct window *window, int32_t x, int32_t y)
4377 {
4378         struct text_cursor_position *text_cursor_position =
4379                                         window->display->text_cursor_position;
4380
4381         if (!text_cursor_position)
4382                 return;
4383
4384         text_cursor_position_notify(text_cursor_position,
4385                                     window->main_surface->surface,
4386                                     wl_fixed_from_int(x),
4387                                     wl_fixed_from_int(y));
4388 }
4389
4390 void
4391 window_damage(struct window *window, int32_t x, int32_t y,
4392               int32_t width, int32_t height)
4393 {
4394         wl_surface_damage(window->main_surface->surface, x, y, width, height);
4395 }
4396
4397 static void
4398 surface_enter(void *data,
4399               struct wl_surface *wl_surface, struct wl_output *wl_output)
4400 {
4401         struct window *window = data;
4402         struct output *output;
4403         struct output *output_found = NULL;
4404         struct window_output *window_output;
4405
4406         wl_list_for_each(output, &window->display->output_list, link) {
4407                 if (output->output == wl_output) {
4408                         output_found = output;
4409                         break;
4410                 }
4411         }
4412
4413         if (!output_found)
4414                 return;
4415
4416         window_output = xmalloc(sizeof *window_output);
4417         window_output->output = output_found;
4418
4419         wl_list_insert (&window->window_output_list, &window_output->link);
4420
4421         if (window->output_handler)
4422                 window->output_handler(window, output_found, 1,
4423                                        window->user_data);
4424 }
4425
4426 static void
4427 surface_leave(void *data,
4428               struct wl_surface *wl_surface, struct wl_output *output)
4429 {
4430         struct window *window = data;
4431         struct window_output *window_output;
4432         struct window_output *window_output_found = NULL;
4433
4434         wl_list_for_each(window_output, &window->window_output_list, link) {
4435                 if (window_output->output->output == output) {
4436                         window_output_found = window_output;
4437                         break;
4438                 }
4439         }
4440
4441         if (window_output_found) {
4442                 wl_list_remove(&window_output_found->link);
4443
4444                 if (window->output_handler)
4445                         window->output_handler(window, window_output->output,
4446                                                0, window->user_data);
4447
4448                 free(window_output_found);
4449         }
4450 }
4451
4452 static const struct wl_surface_listener surface_listener = {
4453         surface_enter,
4454         surface_leave
4455 };
4456
4457 static struct surface *
4458 surface_create(struct window *window)
4459 {
4460         struct display *display = window->display;
4461         struct surface *surface;
4462
4463         surface = xmalloc(sizeof *surface);
4464         memset(surface, 0, sizeof *surface);
4465         if (!surface)
4466                 return NULL;
4467
4468         surface->window = window;
4469         surface->surface = wl_compositor_create_surface(display->compositor);
4470         surface->buffer_scale = 1;
4471         wl_surface_add_listener(surface->surface, &surface_listener, window);
4472
4473         wl_list_insert(&window->subsurface_list, &surface->link);
4474
4475         return surface;
4476 }
4477
4478 static struct window *
4479 window_create_internal(struct display *display,
4480                        struct window *parent, int type)
4481 {
4482         struct window *window;
4483         struct surface *surface;
4484
4485         window = xzalloc(sizeof *window);
4486         wl_list_init(&window->subsurface_list);
4487         window->display = display;
4488         window->parent = parent;
4489
4490         surface = surface_create(window);
4491         window->main_surface = surface;
4492
4493         if (type != TYPE_CUSTOM && display->shell) {
4494                 window->shell_surface =
4495                         wl_shell_get_shell_surface(display->shell,
4496                                                    surface->surface);
4497                 fail_on_null(window->shell_surface);
4498         }
4499
4500         window->type = type;
4501         window->fullscreen_method = WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT;
4502         window->configure_requests = 0;
4503         window->preferred_format = WINDOW_PREFERRED_FORMAT_NONE;
4504
4505         if (display->argb_device)
4506 #ifdef HAVE_CAIRO_EGL
4507                 surface->buffer_type = WINDOW_BUFFER_TYPE_EGL_WINDOW;
4508 #else
4509                 surface->buffer_type = WINDOW_BUFFER_TYPE_SHM;
4510 #endif
4511         else
4512                 surface->buffer_type = WINDOW_BUFFER_TYPE_SHM;
4513
4514         wl_surface_set_user_data(surface->surface, window);
4515         wl_list_insert(display->window_list.prev, &window->link);
4516         wl_list_init(&window->redraw_task.link);
4517
4518         if (window->shell_surface) {
4519                 wl_shell_surface_set_user_data(window->shell_surface, window);
4520                 wl_shell_surface_add_listener(window->shell_surface,
4521                                               &shell_surface_listener, window);
4522         }
4523
4524         wl_list_init (&window->window_output_list);
4525
4526         return window;
4527 }
4528
4529 struct window *
4530 window_create(struct display *display)
4531 {
4532         return window_create_internal(display, NULL, TYPE_NONE);
4533 }
4534
4535 struct window *
4536 window_create_custom(struct display *display)
4537 {
4538         return window_create_internal(display, NULL, TYPE_CUSTOM);
4539 }
4540
4541 struct window *
4542 window_create_transient(struct display *display, struct window *parent,
4543                         int32_t x, int32_t y, uint32_t flags)
4544 {
4545         struct window *window;
4546
4547         window = window_create_internal(parent->display,
4548                                         parent, TYPE_TRANSIENT);
4549
4550         window->x = x;
4551         window->y = y;
4552
4553         if (display->shell)
4554                 wl_shell_surface_set_transient(
4555                         window->shell_surface,
4556                         window->parent->main_surface->surface,
4557                         window->x, window->y, flags);
4558
4559         return window;
4560 }
4561
4562 static void
4563 menu_set_item(struct menu *menu, int sy)
4564 {
4565         int next;
4566
4567         next = (sy - 8) / 20;
4568         if (menu->current != next) {
4569                 menu->current = next;
4570                 widget_schedule_redraw(menu->widget);
4571         }
4572 }
4573
4574 static int
4575 menu_motion_handler(struct widget *widget,
4576                     struct input *input, uint32_t time,
4577                     float x, float y, void *data)
4578 {
4579         struct menu *menu = data;
4580
4581         if (widget == menu->widget)
4582                 menu_set_item(data, y);
4583
4584         return CURSOR_LEFT_PTR;
4585 }
4586
4587 static int
4588 menu_enter_handler(struct widget *widget,
4589                    struct input *input, float x, float y, void *data)
4590 {
4591         struct menu *menu = data;
4592
4593         if (widget == menu->widget)
4594                 menu_set_item(data, y);
4595
4596         return CURSOR_LEFT_PTR;
4597 }
4598
4599 static void
4600 menu_leave_handler(struct widget *widget, struct input *input, void *data)
4601 {
4602         struct menu *menu = data;
4603
4604         if (widget == menu->widget)
4605                 menu_set_item(data, -200);
4606 }
4607
4608 static void
4609 menu_button_handler(struct widget *widget,
4610                     struct input *input, uint32_t time,
4611                     uint32_t button, enum wl_pointer_button_state state,
4612                     void *data)
4613
4614 {
4615         struct menu *menu = data;
4616
4617         if (state == WL_POINTER_BUTTON_STATE_RELEASED &&
4618             (menu->release_count > 0 || time - menu->time > 500)) {
4619                 /* Either relase after press-drag-release or
4620                  * click-motion-click. */
4621                 menu->func(menu->window->parent,
4622                            menu->current, menu->window->parent->user_data);
4623                 input_ungrab(input);
4624                 menu_destroy(menu);
4625         } else if (state == WL_POINTER_BUTTON_STATE_RELEASED) {
4626                 menu->release_count++;
4627         }
4628 }
4629
4630 static void
4631 menu_redraw_handler(struct widget *widget, void *data)
4632 {
4633         cairo_t *cr;
4634         const int32_t r = 3, margin = 3;
4635         struct menu *menu = data;
4636         int32_t width, height, i;
4637
4638         cr = widget_cairo_create(widget);
4639         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
4640         cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
4641         cairo_paint(cr);
4642
4643         width = widget->allocation.width;
4644         height = widget->allocation.height;
4645         rounded_rect(cr, 0, 0, width, height, r);
4646
4647         cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
4648         cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8);
4649         cairo_fill(cr);
4650
4651         for (i = 0; i < menu->count; i++) {
4652                 if (i == menu->current) {
4653                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
4654                         cairo_rectangle(cr, margin, i * 20 + margin,
4655                                         width - 2 * margin, 20);
4656                         cairo_fill(cr);
4657                         cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
4658                         cairo_move_to(cr, 10, i * 20 + 16);
4659                         cairo_show_text(cr, menu->entries[i]);
4660                 } else {
4661                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
4662                         cairo_move_to(cr, 10, i * 20 + 16);
4663                         cairo_show_text(cr, menu->entries[i]);
4664                 }
4665         }
4666
4667         cairo_destroy(cr);
4668 }
4669
4670 void
4671 window_show_menu(struct display *display,
4672                  struct input *input, uint32_t time, struct window *parent,
4673                  int32_t x, int32_t y,
4674                  menu_func_t func, const char **entries, int count)
4675 {
4676         struct window *window;
4677         struct menu *menu;
4678         const int32_t margin = 3;
4679
4680         menu = malloc(sizeof *menu);
4681         if (!menu)
4682                 return;
4683
4684         window = window_create_internal(parent->display, parent, TYPE_MENU);
4685         if (!window) {
4686                 free(menu);
4687                 return;
4688         }
4689
4690         menu->window = window;
4691         menu->widget = window_add_widget(menu->window, menu);
4692         window_set_buffer_scale (menu->window, window_get_buffer_scale (parent));
4693         window_set_buffer_transform (menu->window, window_get_buffer_transform (parent));
4694         menu->entries = entries;
4695         menu->count = count;
4696         menu->release_count = 0;
4697         menu->current = -1;
4698         menu->time = time;
4699         menu->func = func;
4700         menu->input = input;
4701         window->type = TYPE_MENU;
4702         window->x = x;
4703         window->y = y;
4704
4705         input_ungrab(input);
4706         wl_shell_surface_set_popup(window->shell_surface, input->seat,
4707                                    display_get_serial(window->display),
4708                                    window->parent->main_surface->surface,
4709                                    window->x, window->y, 0);
4710
4711         widget_set_redraw_handler(menu->widget, menu_redraw_handler);
4712         widget_set_enter_handler(menu->widget, menu_enter_handler);
4713         widget_set_leave_handler(menu->widget, menu_leave_handler);
4714         widget_set_motion_handler(menu->widget, menu_motion_handler);
4715         widget_set_button_handler(menu->widget, menu_button_handler);
4716
4717         input_grab(input, menu->widget, 0);
4718         window_schedule_resize(window, 200, count * 20 + margin * 2);
4719 }
4720
4721 void
4722 window_set_buffer_type(struct window *window, enum window_buffer_type type)
4723 {
4724         window->main_surface->buffer_type = type;
4725 }
4726
4727 void
4728 window_set_preferred_format(struct window *window,
4729                             enum preferred_format format)
4730 {
4731         window->preferred_format = format;
4732 }
4733
4734 struct widget *
4735 window_add_subsurface(struct window *window, void *data,
4736                       enum subsurface_mode default_mode)
4737 {
4738         struct widget *widget;
4739         struct surface *surface;
4740         struct wl_surface *parent;
4741         struct wl_subcompositor *subcompo = window->display->subcompositor;
4742
4743         surface = surface_create(window);
4744         widget = widget_create(window, surface, data);
4745         wl_list_init(&widget->link);
4746         surface->widget = widget;
4747
4748         parent = window->main_surface->surface;
4749         surface->subsurface = wl_subcompositor_get_subsurface(subcompo,
4750                                                               surface->surface,
4751                                                               parent);
4752         surface->synchronized = 1;
4753
4754         switch (default_mode) {
4755         case SUBSURFACE_SYNCHRONIZED:
4756                 surface->synchronized_default = 1;
4757                 break;
4758         case SUBSURFACE_DESYNCHRONIZED:
4759                 surface->synchronized_default = 0;
4760                 break;
4761         default:
4762                 assert(!"bad enum subsurface_mode");
4763         }
4764
4765         return widget;
4766 }
4767
4768 static void
4769 display_handle_geometry(void *data,
4770                         struct wl_output *wl_output,
4771                         int x, int y,
4772                         int physical_width,
4773                         int physical_height,
4774                         int subpixel,
4775                         const char *make,
4776                         const char *model,
4777                         int transform)
4778 {
4779         struct output *output = data;
4780
4781         output->allocation.x = x;
4782         output->allocation.y = y;
4783         output->transform = transform;
4784 }
4785
4786 static void
4787 display_handle_done(void *data,
4788                      struct wl_output *wl_output)
4789 {
4790 }
4791
4792 static void
4793 display_handle_scale(void *data,
4794                      struct wl_output *wl_output,
4795                      int32_t scale)
4796 {
4797         struct output *output = data;
4798
4799         output->scale = scale;
4800 }
4801
4802 static void
4803 display_handle_mode(void *data,
4804                     struct wl_output *wl_output,
4805                     uint32_t flags,
4806                     int width,
4807                     int height,
4808                     int refresh)
4809 {
4810         struct output *output = data;
4811         struct display *display = output->display;
4812
4813         if (flags & WL_OUTPUT_MODE_CURRENT) {
4814                 output->allocation.width = width;
4815                 output->allocation.height = height;
4816                 if (display->output_configure_handler)
4817                         (*display->output_configure_handler)(
4818                                                 output, display->user_data);
4819         }
4820 }
4821
4822 static const struct wl_output_listener output_listener = {
4823         display_handle_geometry,
4824         display_handle_mode,
4825         display_handle_done,
4826         display_handle_scale
4827 };
4828
4829 static void
4830 display_add_output(struct display *d, uint32_t id)
4831 {
4832         struct output *output;
4833
4834         output = xzalloc(sizeof *output);
4835         output->display = d;
4836         output->scale = 1;
4837         output->output =
4838                 wl_registry_bind(d->registry, id, &wl_output_interface, 2);
4839         wl_list_insert(d->output_list.prev, &output->link);
4840
4841         wl_output_add_listener(output->output, &output_listener, output);
4842 }
4843
4844 static void
4845 output_destroy(struct output *output)
4846 {
4847         if (output->destroy_handler)
4848                 (*output->destroy_handler)(output, output->user_data);
4849
4850         wl_output_destroy(output->output);
4851         wl_list_remove(&output->link);
4852         free(output);
4853 }
4854
4855 void
4856 display_set_global_handler(struct display *display,
4857                            display_global_handler_t handler)
4858 {
4859         struct global *global;
4860
4861         display->global_handler = handler;
4862         if (!handler)
4863                 return;
4864
4865         wl_list_for_each(global, &display->global_list, link)
4866                 display->global_handler(display,
4867                                         global->name, global->interface,
4868                                         global->version, display->user_data);
4869 }
4870
4871 void
4872 display_set_output_configure_handler(struct display *display,
4873                                      display_output_handler_t handler)
4874 {
4875         struct output *output;
4876
4877         display->output_configure_handler = handler;
4878         if (!handler)
4879                 return;
4880
4881         wl_list_for_each(output, &display->output_list, link) {
4882                 if (output->allocation.width == 0 &&
4883                     output->allocation.height == 0)
4884                         continue;
4885
4886                 (*display->output_configure_handler)(output,
4887                                                      display->user_data);
4888         }
4889 }
4890
4891 void
4892 output_set_user_data(struct output *output, void *data)
4893 {
4894         output->user_data = data;
4895 }
4896
4897 void *
4898 output_get_user_data(struct output *output)
4899 {
4900         return output->user_data;
4901 }
4902
4903 void
4904 output_set_destroy_handler(struct output *output,
4905                            display_output_handler_t handler)
4906 {
4907         output->destroy_handler = handler;
4908         /* FIXME: implement this, once we have way to remove outputs */
4909 }
4910
4911 void
4912 output_get_allocation(struct output *output, struct rectangle *base)
4913 {
4914         struct rectangle allocation = output->allocation;
4915
4916         switch (output->transform) {
4917         case WL_OUTPUT_TRANSFORM_90:
4918         case WL_OUTPUT_TRANSFORM_270:
4919         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
4920         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
4921                 /* Swap width and height */
4922                 allocation.width = output->allocation.height;
4923                 allocation.height = output->allocation.width;
4924                 break;
4925         }
4926
4927         *base = allocation;
4928 }
4929
4930 struct wl_output *
4931 output_get_wl_output(struct output *output)
4932 {
4933         return output->output;
4934 }
4935
4936 enum wl_output_transform
4937 output_get_transform(struct output *output)
4938 {
4939         return output->transform;
4940 }
4941
4942 uint32_t
4943 output_get_scale(struct output *output)
4944 {
4945         return output->scale;
4946 }
4947
4948 static void
4949 fini_xkb(struct input *input)
4950 {
4951         xkb_state_unref(input->xkb.state);
4952         xkb_map_unref(input->xkb.keymap);
4953 }
4954
4955 #define MAX(a,b) ((a) > (b) ? a : b)
4956
4957 static void
4958 display_add_input(struct display *d, uint32_t id)
4959 {
4960         struct input *input;
4961
4962         input = xzalloc(sizeof *input);
4963         input->display = d;
4964         input->seat = wl_registry_bind(d->registry, id, &wl_seat_interface,
4965                                        MAX(d->seat_version, 3));
4966         input->touch_focus = NULL;
4967         input->pointer_focus = NULL;
4968         input->keyboard_focus = NULL;
4969         wl_list_init(&input->touch_point_list);
4970         wl_list_insert(d->input_list.prev, &input->link);
4971
4972         wl_seat_add_listener(input->seat, &seat_listener, input);
4973         wl_seat_set_user_data(input->seat, input);
4974
4975         input->data_device =
4976                 wl_data_device_manager_get_data_device(d->data_device_manager,
4977                                                        input->seat);
4978         wl_data_device_add_listener(input->data_device, &data_device_listener,
4979                                     input);
4980
4981         input->pointer_surface = wl_compositor_create_surface(d->compositor);
4982
4983         input->repeat_timer_fd = timerfd_create(CLOCK_MONOTONIC,
4984                                                 TFD_CLOEXEC | TFD_NONBLOCK);
4985         input->repeat_task.run = keyboard_repeat_func;
4986         display_watch_fd(d, input->repeat_timer_fd,
4987                          EPOLLIN, &input->repeat_task);
4988 }
4989
4990 static void
4991 input_destroy(struct input *input)
4992 {
4993         input_remove_keyboard_focus(input);
4994         input_remove_pointer_focus(input);
4995
4996         if (input->drag_offer)
4997                 data_offer_destroy(input->drag_offer);
4998
4999         if (input->selection_offer)
5000                 data_offer_destroy(input->selection_offer);
5001
5002         wl_data_device_destroy(input->data_device);
5003
5004         if (input->display->seat_version >= 3) {
5005                 if (input->pointer)
5006                         wl_pointer_release(input->pointer);
5007                 if (input->keyboard)
5008                         wl_keyboard_release(input->keyboard);
5009         }
5010
5011         fini_xkb(input);
5012
5013         wl_surface_destroy(input->pointer_surface);
5014
5015         wl_list_remove(&input->link);
5016         wl_seat_destroy(input->seat);
5017         close(input->repeat_timer_fd);
5018         free(input);
5019 }
5020
5021 static void
5022 init_workspace_manager(struct display *d, uint32_t id)
5023 {
5024         d->workspace_manager =
5025                 wl_registry_bind(d->registry, id,
5026                                  &workspace_manager_interface, 1);
5027         if (d->workspace_manager != NULL)
5028                 workspace_manager_add_listener(d->workspace_manager,
5029                                                &workspace_manager_listener,
5030                                                d);
5031 }
5032
5033 static void
5034 shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
5035 {
5036         struct display *d = data;
5037
5038         if (format == WL_SHM_FORMAT_RGB565)
5039                 d->has_rgb565 = 1;
5040 }
5041
5042 struct wl_shm_listener shm_listener = {
5043         shm_format
5044 };
5045
5046 static void
5047 registry_handle_global(void *data, struct wl_registry *registry, uint32_t id,
5048                        const char *interface, uint32_t version)
5049 {
5050         struct display *d = data;
5051         struct global *global;
5052
5053         global = xmalloc(sizeof *global);
5054         global->name = id;
5055         global->interface = strdup(interface);
5056         global->version = version;
5057         wl_list_insert(d->global_list.prev, &global->link);
5058
5059         if (strcmp(interface, "wl_compositor") == 0) {
5060                 d->compositor = wl_registry_bind(registry, id,
5061                                                  &wl_compositor_interface, 3);
5062         } else if (strcmp(interface, "wl_output") == 0) {
5063                 display_add_output(d, id);
5064         } else if (strcmp(interface, "wl_seat") == 0) {
5065                 d->seat_version = version;
5066                 display_add_input(d, id);
5067         } else if (strcmp(interface, "wl_shell") == 0) {
5068                 d->shell = wl_registry_bind(registry,
5069                                             id, &wl_shell_interface, 1);
5070         } else if (strcmp(interface, "wl_shm") == 0) {
5071                 d->shm = wl_registry_bind(registry, id, &wl_shm_interface, 1);
5072                 wl_shm_add_listener(d->shm, &shm_listener, d);
5073         } else if (strcmp(interface, "wl_data_device_manager") == 0) {
5074                 d->data_device_manager =
5075                         wl_registry_bind(registry, id,
5076                                          &wl_data_device_manager_interface, 1);
5077         } else if (strcmp(interface, "text_cursor_position") == 0) {
5078                 d->text_cursor_position =
5079                         wl_registry_bind(registry, id,
5080                                          &text_cursor_position_interface, 1);
5081         } else if (strcmp(interface, "workspace_manager") == 0) {
5082                 init_workspace_manager(d, id);
5083         } else if (strcmp(interface, "wl_subcompositor") == 0) {
5084                 d->subcompositor =
5085                         wl_registry_bind(registry, id,
5086                                          &wl_subcompositor_interface, 1);
5087         }
5088
5089         if (d->global_handler)
5090                 d->global_handler(d, id, interface, version, d->user_data);
5091 }
5092
5093 static void
5094 registry_handle_global_remove(void *data, struct wl_registry *registry,
5095                               uint32_t name)
5096 {
5097         struct display *d = data;
5098         struct global *global;
5099         struct global *tmp;
5100
5101         wl_list_for_each_safe(global, tmp, &d->global_list, link) {
5102                 if (global->name != name)
5103                         continue;
5104
5105                 /* XXX: Should destroy bound globals, and call
5106                  * the counterpart of display::global_handler
5107                  */
5108                 wl_list_remove(&global->link);
5109                 free(global->interface);
5110                 free(global);
5111         }
5112 }
5113
5114 void *
5115 display_bind(struct display *display, uint32_t name,
5116              const struct wl_interface *interface, uint32_t version)
5117 {
5118         return wl_registry_bind(display->registry, name, interface, version);
5119 }
5120
5121 static const struct wl_registry_listener registry_listener = {
5122         registry_handle_global,
5123         registry_handle_global_remove
5124 };
5125
5126 #ifdef HAVE_CAIRO_EGL
5127 static int
5128 init_egl(struct display *d)
5129 {
5130         EGLint major, minor;
5131         EGLint n;
5132
5133 #ifdef USE_CAIRO_GLESV2
5134 #  define GL_BIT EGL_OPENGL_ES2_BIT
5135 #else
5136 #  define GL_BIT EGL_OPENGL_BIT
5137 #endif
5138
5139         static const EGLint argb_cfg_attribs[] = {
5140                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
5141                 EGL_RED_SIZE, 1,
5142                 EGL_GREEN_SIZE, 1,
5143                 EGL_BLUE_SIZE, 1,
5144                 EGL_ALPHA_SIZE, 1,
5145                 EGL_DEPTH_SIZE, 1,
5146                 EGL_RENDERABLE_TYPE, GL_BIT,
5147                 EGL_NONE
5148         };
5149
5150 #ifdef USE_CAIRO_GLESV2
5151         static const EGLint context_attribs[] = {
5152                 EGL_CONTEXT_CLIENT_VERSION, 2,
5153                 EGL_NONE
5154         };
5155         EGLint api = EGL_OPENGL_ES_API;
5156 #else
5157         EGLint *context_attribs = NULL;
5158         EGLint api = EGL_OPENGL_API;
5159 #endif
5160
5161         d->dpy = eglGetDisplay(d->display);
5162         if (!eglInitialize(d->dpy, &major, &minor)) {
5163                 fprintf(stderr, "failed to initialize EGL\n");
5164                 return -1;
5165         }
5166
5167         if (!eglBindAPI(api)) {
5168                 fprintf(stderr, "failed to bind EGL client API\n");
5169                 return -1;
5170         }
5171
5172         if (!eglChooseConfig(d->dpy, argb_cfg_attribs,
5173                              &d->argb_config, 1, &n) || n != 1) {
5174                 fprintf(stderr, "failed to choose argb EGL config\n");
5175                 return -1;
5176         }
5177
5178         d->argb_ctx = eglCreateContext(d->dpy, d->argb_config,
5179                                        EGL_NO_CONTEXT, context_attribs);
5180         if (d->argb_ctx == NULL) {
5181                 fprintf(stderr, "failed to create EGL context\n");
5182                 return -1;
5183         }
5184
5185         d->argb_device = cairo_egl_device_create(d->dpy, d->argb_ctx);
5186         if (cairo_device_status(d->argb_device) != CAIRO_STATUS_SUCCESS) {
5187                 fprintf(stderr, "failed to get cairo EGL argb device\n");
5188                 return -1;
5189         }
5190
5191         return 0;
5192 }
5193
5194 static void
5195 fini_egl(struct display *display)
5196 {
5197         cairo_device_destroy(display->argb_device);
5198
5199         eglMakeCurrent(display->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE,
5200                        EGL_NO_CONTEXT);
5201
5202         eglTerminate(display->dpy);
5203         eglReleaseThread();
5204 }
5205 #endif
5206
5207 static void
5208 init_dummy_surface(struct display *display)
5209 {
5210         int len;
5211         void *data;
5212
5213         len = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, 1);
5214         data = malloc(len);
5215         display->dummy_surface =
5216                 cairo_image_surface_create_for_data(data, CAIRO_FORMAT_ARGB32,
5217                                                     1, 1, len);
5218         display->dummy_surface_data = data;
5219 }
5220
5221 static void
5222 handle_display_data(struct task *task, uint32_t events)
5223 {
5224         struct display *display =
5225                 container_of(task, struct display, display_task);
5226         struct epoll_event ep;
5227         int ret;
5228
5229         display->display_fd_events = events;
5230
5231         if (events & EPOLLERR || events & EPOLLHUP) {
5232                 display_exit(display);
5233                 return;
5234         }
5235
5236         if (events & EPOLLIN) {
5237                 ret = wl_display_dispatch(display->display);
5238                 if (ret == -1) {
5239                         display_exit(display);
5240                         return;
5241                 }
5242         }
5243
5244         if (events & EPOLLOUT) {
5245                 ret = wl_display_flush(display->display);
5246                 if (ret == 0) {
5247                         ep.events = EPOLLIN | EPOLLERR | EPOLLHUP;
5248                         ep.data.ptr = &display->display_task;
5249                         epoll_ctl(display->epoll_fd, EPOLL_CTL_MOD,
5250                                   display->display_fd, &ep);
5251                 } else if (ret == -1 && errno != EAGAIN) {
5252                         display_exit(display);
5253                         return;
5254                 }
5255         }
5256 }
5257
5258 static void
5259 log_handler(const char *format, va_list args)
5260 {
5261         vfprintf(stderr, format, args);
5262 }
5263
5264 struct display *
5265 display_create(int *argc, char *argv[])
5266 {
5267         struct display *d;
5268
5269         wl_log_set_handler_client(log_handler);
5270
5271         d = zalloc(sizeof *d);
5272         if (d == NULL)
5273                 return NULL;
5274
5275         d->display = wl_display_connect(NULL);
5276         if (d->display == NULL) {
5277                 fprintf(stderr, "failed to connect to Wayland display: %m\n");
5278                 free(d);
5279                 return NULL;
5280         }
5281
5282         d->xkb_context = xkb_context_new(0);
5283         if (d->xkb_context == NULL) {
5284                 fprintf(stderr, "Failed to create XKB context\n");
5285                 free(d);
5286                 return NULL;
5287         }
5288
5289         d->epoll_fd = os_epoll_create_cloexec();
5290         d->display_fd = wl_display_get_fd(d->display);
5291         d->display_task.run = handle_display_data;
5292         display_watch_fd(d, d->display_fd, EPOLLIN | EPOLLERR | EPOLLHUP,
5293                          &d->display_task);
5294
5295         wl_list_init(&d->deferred_list);
5296         wl_list_init(&d->input_list);
5297         wl_list_init(&d->output_list);
5298         wl_list_init(&d->global_list);
5299
5300         d->workspace = 0;
5301         d->workspace_count = 1;
5302
5303         d->registry = wl_display_get_registry(d->display);
5304         wl_registry_add_listener(d->registry, &registry_listener, d);
5305
5306         if (wl_display_dispatch(d->display) < 0) {
5307                 fprintf(stderr, "Failed to process Wayland connection: %m\n");
5308                 return NULL;
5309         }
5310
5311 #ifdef HAVE_CAIRO_EGL
5312         if (init_egl(d) < 0)
5313                 fprintf(stderr, "EGL does not seem to work, "
5314                         "falling back to software rendering and wl_shm.\n");
5315 #endif
5316
5317         create_cursors(d);
5318
5319         d->theme = theme_create();
5320
5321         wl_list_init(&d->window_list);
5322
5323         init_dummy_surface(d);
5324
5325         return d;
5326 }
5327
5328 static void
5329 display_destroy_outputs(struct display *display)
5330 {
5331         struct output *tmp;
5332         struct output *output;
5333
5334         wl_list_for_each_safe(output, tmp, &display->output_list, link)
5335                 output_destroy(output);
5336 }
5337
5338 static void
5339 display_destroy_inputs(struct display *display)
5340 {
5341         struct input *tmp;
5342         struct input *input;
5343
5344         wl_list_for_each_safe(input, tmp, &display->input_list, link)
5345                 input_destroy(input);
5346 }
5347
5348 void
5349 display_destroy(struct display *display)
5350 {
5351         if (!wl_list_empty(&display->window_list))
5352                 fprintf(stderr, "toytoolkit warning: %d windows exist.\n",
5353                         wl_list_length(&display->window_list));
5354
5355         if (!wl_list_empty(&display->deferred_list))
5356                 fprintf(stderr, "toytoolkit warning: deferred tasks exist.\n");
5357
5358         cairo_surface_destroy(display->dummy_surface);
5359         free(display->dummy_surface_data);
5360
5361         display_destroy_outputs(display);
5362         display_destroy_inputs(display);
5363
5364         xkb_context_unref(display->xkb_context);
5365
5366         theme_destroy(display->theme);
5367         destroy_cursors(display);
5368
5369 #ifdef HAVE_CAIRO_EGL
5370         if (display->argb_device)
5371                 fini_egl(display);
5372 #endif
5373
5374         if (display->subcompositor)
5375                 wl_subcompositor_destroy(display->subcompositor);
5376
5377         if (display->shell)
5378                 wl_shell_destroy(display->shell);
5379
5380         if (display->shm)
5381                 wl_shm_destroy(display->shm);
5382
5383         if (display->data_device_manager)
5384                 wl_data_device_manager_destroy(display->data_device_manager);
5385
5386         wl_compositor_destroy(display->compositor);
5387         wl_registry_destroy(display->registry);
5388
5389         close(display->epoll_fd);
5390
5391         if (!(display->display_fd_events & EPOLLERR) &&
5392             !(display->display_fd_events & EPOLLHUP))
5393                 wl_display_flush(display->display);
5394
5395         wl_display_disconnect(display->display);
5396         free(display);
5397 }
5398
5399 void
5400 display_set_user_data(struct display *display, void *data)
5401 {
5402         display->user_data = data;
5403 }
5404
5405 void *
5406 display_get_user_data(struct display *display)
5407 {
5408         return display->user_data;
5409 }
5410
5411 struct wl_display *
5412 display_get_display(struct display *display)
5413 {
5414         return display->display;
5415 }
5416
5417 int
5418 display_has_subcompositor(struct display *display)
5419 {
5420         if (display->subcompositor)
5421                 return 1;
5422
5423         wl_display_roundtrip(display->display);
5424
5425         return display->subcompositor != NULL;
5426 }
5427
5428 cairo_device_t *
5429 display_get_cairo_device(struct display *display)
5430 {
5431         return display->argb_device;
5432 }
5433
5434 struct output *
5435 display_get_output(struct display *display)
5436 {
5437         return container_of(display->output_list.next, struct output, link);
5438 }
5439
5440 struct wl_compositor *
5441 display_get_compositor(struct display *display)
5442 {
5443         return display->compositor;
5444 }
5445
5446 uint32_t
5447 display_get_serial(struct display *display)
5448 {
5449         return display->serial;
5450 }
5451
5452 EGLDisplay
5453 display_get_egl_display(struct display *d)
5454 {
5455         return d->dpy;
5456 }
5457
5458 struct wl_data_source *
5459 display_create_data_source(struct display *display)
5460 {
5461         return wl_data_device_manager_create_data_source(display->data_device_manager);
5462 }
5463
5464 EGLConfig
5465 display_get_argb_egl_config(struct display *d)
5466 {
5467         return d->argb_config;
5468 }
5469
5470 struct wl_shell *
5471 display_get_shell(struct display *display)
5472 {
5473         return display->shell;
5474 }
5475
5476 int
5477 display_acquire_window_surface(struct display *display,
5478                                struct window *window,
5479                                EGLContext ctx)
5480 {
5481         struct surface *surface = window->main_surface;
5482
5483         if (surface->buffer_type != WINDOW_BUFFER_TYPE_EGL_WINDOW)
5484                 return -1;
5485
5486         widget_get_cairo_surface(window->main_surface->widget);
5487         return surface->toysurface->acquire(surface->toysurface, ctx);
5488 }
5489
5490 void
5491 display_release_window_surface(struct display *display,
5492                                struct window *window)
5493 {
5494         struct surface *surface = window->main_surface;
5495
5496         if (surface->buffer_type != WINDOW_BUFFER_TYPE_EGL_WINDOW)
5497                 return;
5498
5499         surface->toysurface->release(surface->toysurface);
5500 }
5501
5502 void
5503 display_defer(struct display *display, struct task *task)
5504 {
5505         wl_list_insert(&display->deferred_list, &task->link);
5506 }
5507
5508 void
5509 display_watch_fd(struct display *display,
5510                  int fd, uint32_t events, struct task *task)
5511 {
5512         struct epoll_event ep;
5513
5514         ep.events = events;
5515         ep.data.ptr = task;
5516         epoll_ctl(display->epoll_fd, EPOLL_CTL_ADD, fd, &ep);
5517 }
5518
5519 void
5520 display_unwatch_fd(struct display *display, int fd)
5521 {
5522         epoll_ctl(display->epoll_fd, EPOLL_CTL_DEL, fd, NULL);
5523 }
5524
5525 void
5526 display_run(struct display *display)
5527 {
5528         struct task *task;
5529         struct epoll_event ep[16];
5530         int i, count, ret;
5531
5532         display->running = 1;
5533         while (1) {
5534                 while (!wl_list_empty(&display->deferred_list)) {
5535                         task = container_of(display->deferred_list.prev,
5536                                             struct task, link);
5537                         wl_list_remove(&task->link);
5538                         task->run(task, 0);
5539                 }
5540
5541                 wl_display_dispatch_pending(display->display);
5542
5543                 if (!display->running)
5544                         break;
5545
5546                 ret = wl_display_flush(display->display);
5547                 if (ret < 0 && errno == EAGAIN) {
5548                         ep[0].events =
5549                                 EPOLLIN | EPOLLOUT | EPOLLERR | EPOLLHUP;
5550                         ep[0].data.ptr = &display->display_task;
5551
5552                         epoll_ctl(display->epoll_fd, EPOLL_CTL_MOD,
5553                                   display->display_fd, &ep[0]);
5554                 } else if (ret < 0) {
5555                         break;
5556                 }
5557
5558                 count = epoll_wait(display->epoll_fd,
5559                                    ep, ARRAY_LENGTH(ep), -1);
5560                 for (i = 0; i < count; i++) {
5561                         task = ep[i].data.ptr;
5562                         task->run(task, ep[i].events);
5563                 }
5564         }
5565 }
5566
5567 void
5568 display_exit(struct display *display)
5569 {
5570         display->running = 0;
5571 }
5572
5573 void
5574 keysym_modifiers_add(struct wl_array *modifiers_map,
5575                      const char *name)
5576 {
5577         size_t len = strlen(name) + 1;
5578         char *p;
5579
5580         p = wl_array_add(modifiers_map, len);
5581
5582         if (p == NULL)
5583                 return;
5584
5585         strncpy(p, name, len);
5586 }
5587
5588 static xkb_mod_index_t
5589 keysym_modifiers_get_index(struct wl_array *modifiers_map,
5590                            const char *name)
5591 {
5592         xkb_mod_index_t index = 0;
5593         char *p = modifiers_map->data;
5594
5595         while ((const char *)p < (const char *)(modifiers_map->data + modifiers_map->size)) {
5596                 if (strcmp(p, name) == 0)
5597                         return index;
5598
5599                 index++;
5600                 p += strlen(p) + 1;
5601         }
5602
5603         return XKB_MOD_INVALID;
5604 }
5605
5606 xkb_mod_mask_t
5607 keysym_modifiers_get_mask(struct wl_array *modifiers_map,
5608                           const char *name)
5609 {
5610         xkb_mod_index_t index = keysym_modifiers_get_index(modifiers_map, name);
5611
5612         if (index == XKB_MOD_INVALID)
5613                 return XKB_MOD_INVALID;
5614
5615         return 1 << index;
5616 }
5617
5618 void *
5619 fail_on_null(void *p)
5620 {
5621         if (p == NULL) {
5622                 fprintf(stderr, "%s: out of memory\n", program_invocation_short_name);
5623                 exit(EXIT_FAILURE);
5624         }
5625
5626         return p;
5627 }
5628
5629 void *
5630 xmalloc(size_t s)
5631 {
5632         return fail_on_null(malloc(s));
5633 }
5634
5635 void *
5636 xzalloc(size_t s)
5637 {
5638         return fail_on_null(zalloc(s));
5639 }
5640
5641 char *
5642 xstrdup(const char *s)
5643 {
5644         return fail_on_null(strdup(s));
5645 }