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 };
 134
 135 enum {
 136         TYPE_NONE,
 137         TYPE_TOPLEVEL,
 138         TYPE_FULLSCREEN,
 139         TYPE_MAXIMIZED,
 140         TYPE_TRANSIENT,
 141         TYPE_MENU,
 142         TYPE_CUSTOM
 143 };
 144
 145 struct window_output {
 146         struct output *output;
 147         struct wl_list link;
 148 };
 149
 150 struct toysurface {
 151         /*
 152          * Prepare the surface for drawing. Makes sure there is a surface
 153          * of the right size available for rendering, and returns it.
 154          * dx,dy are the x,y of wl_surface.attach.
 155          * width,height are the new buffer size.
 156          * If flags has SURFACE_HINT_RESIZE set, the user is
 157          * doing continuous resizing.
 158          * Returns the Cairo surface to draw to.
 159          */
 160         cairo_surface_t *(*prepare)(struct toysurface *base, int dx, int dy,
 161                                     int32_t width, int32_t height, uint32_t flags,
 162                                     enum wl_output_transform buffer_transform, int32_t buffer_scale);
 163
 164         /*
 165          * Post the surface to the server, returning the server allocation
 166          * rectangle. The Cairo surface from prepare() must be destroyed
 167          * after calling this.
 168          */
 169         void (*swap)(struct toysurface *base,
 170                      enum wl_output_transform buffer_transform, int32_t buffer_scale,
 171                      struct rectangle *server_allocation);
 172
 173         /*
 174          * Make the toysurface current with the given EGL context.
 175          * Returns 0 on success, and negative of failure.
 176          */
 177         int (*acquire)(struct toysurface *base, EGLContext ctx);
 178
 179         /*
 180          * Release the toysurface from the EGL context, returning control
 181          * to Cairo.
 182          */
 183         void (*release)(struct toysurface *base);
 184
 185         /*
 186          * Destroy the toysurface, including the Cairo surface, any
 187          * backing storage, and the Wayland protocol objects.
 188          */
 189         void (*destroy)(struct toysurface *base);
 190 };
 191
 192 struct surface {
 193         struct window *window;
 194
 195         struct wl_surface *surface;
 196         struct wl_subsurface *subsurface;
 197         int synchronized;
 198         int synchronized_default;
 199         struct toysurface *toysurface;
 200         struct widget *widget;
 201         int redraw_needed;
 202         struct wl_callback *frame_cb;
 203         uint32_t last_time;
 204
 205         struct rectangle allocation;
 206         struct rectangle server_allocation;
 207
 208         struct wl_region *input_region;
 209         struct wl_region *opaque_region;
 210
 211         enum window_buffer_type buffer_type;
 212         enum wl_output_transform buffer_transform;
 213         int32_t buffer_scale;
 214
 215         cairo_surface_t *cairo_surface;
 216
 217         struct wl_list link;
 218 };
 219
 220 struct window {
 221         struct display *display;
 222         struct window *parent;
 223         struct wl_list window_output_list;
 224         char *title;
 225         struct rectangle saved_allocation;
 226         struct rectangle min_allocation;
 227         struct rectangle pending_allocation;
 228         int x, y;
 229         int resize_edges;
 230         int redraw_needed;
 231         int redraw_task_scheduled;
 232         struct task redraw_task;
 233         int resize_needed;
 234         int saved_type;
 235         int type;
 236         int focus_count;
 237
 238         int resizing;
 239         int fullscreen_method;
 240         int configure_requests;
 241
 242         enum preferred_format preferred_format;
 243
 244         window_key_handler_t key_handler;
 245         window_keyboard_focus_handler_t keyboard_focus_handler;
 246         window_data_handler_t data_handler;
 247         window_drop_handler_t drop_handler;
 248         window_close_handler_t close_handler;
 249         window_fullscreen_handler_t fullscreen_handler;
 250         window_output_handler_t output_handler;
 251
 252         struct surface *main_surface;
 253         struct wl_shell_surface *shell_surface;
 254
 255         struct frame *frame;
 256
 257         /* struct surface::link, contains also main_surface */
 258         struct wl_list subsurface_list;
 259
 260         void *user_data;
 261         struct wl_list link;
 262 };
 263
 264 struct widget {
 265         struct window *window;
 266         struct surface *surface;
 267         struct tooltip *tooltip;
 268         struct wl_list child_list;
 269         struct wl_list link;
 270         struct rectangle allocation;
 271         widget_resize_handler_t resize_handler;
 272         widget_redraw_handler_t redraw_handler;
 273         widget_enter_handler_t enter_handler;
 274         widget_leave_handler_t leave_handler;
 275         widget_motion_handler_t motion_handler;
 276         widget_button_handler_t button_handler;
 277         widget_touch_down_handler_t touch_down_handler;
 278         widget_touch_up_handler_t touch_up_handler;
 279         widget_touch_motion_handler_t touch_motion_handler;
 280         widget_touch_frame_handler_t touch_frame_handler;
 281         widget_touch_cancel_handler_t touch_cancel_handler;
 282         widget_axis_handler_t axis_handler;
 283         void *user_data;
 284         int opaque;
 285         int tooltip_count;
 286         int default_cursor;
 287 };
 288
 289 struct touch_point {
 290         int32_t id;
 291         struct widget *widget;
 292         struct wl_list link;
 293 };
 294
 295 struct input {
 296         struct display *display;
 297         struct wl_seat *seat;
 298         struct wl_pointer *pointer;
 299         struct wl_keyboard *keyboard;
 300         struct wl_touch *touch;
 301         struct wl_list touch_point_list;
 302         struct window *pointer_focus;
 303         struct window *keyboard_focus;
 304         struct window *touch_focus;
 305         int current_cursor;
 306         uint32_t cursor_anim_start;
 307         struct wl_callback *cursor_frame_cb;
 308         struct wl_surface *pointer_surface;
 309         uint32_t modifiers;
 310         uint32_t pointer_enter_serial;
 311         uint32_t cursor_serial;
 312         float sx, sy;
 313         struct wl_list link;
 314
 315         struct widget *focus_widget;
 316         struct widget *grab;
 317         uint32_t grab_button;
 318
 319         struct wl_data_device *data_device;
 320         struct data_offer *drag_offer;
 321         struct data_offer *selection_offer;
 322
 323         struct {
 324                 struct xkb_keymap *keymap;
 325                 struct xkb_state *state;
 326                 xkb_mod_mask_t control_mask;
 327                 xkb_mod_mask_t alt_mask;
 328                 xkb_mod_mask_t shift_mask;
 329         } xkb;
 330
 331         struct task repeat_task;
 332         int repeat_timer_fd;
 333         uint32_t repeat_sym;
 334         uint32_t repeat_key;
 335         uint32_t repeat_time;
 336 };
 337
 338 struct output {
 339         struct display *display;
 340         struct wl_output *output;
 341         struct rectangle allocation;
 342         struct wl_list link;
 343         int transform;
 344         int scale;
 345
 346         display_output_handler_t destroy_handler;
 347         void *user_data;
 348 };
 349
 350 enum frame_button_action {
 351         FRAME_BUTTON_NULL = 0,
 352         FRAME_BUTTON_ICON = 1,
 353         FRAME_BUTTON_CLOSE = 2,
 354         FRAME_BUTTON_MINIMIZE = 3,
 355         FRAME_BUTTON_MAXIMIZE = 4,
 356 };
 357
 358 enum frame_button_pointer {
 359         FRAME_BUTTON_DEFAULT = 0,
 360         FRAME_BUTTON_OVER = 1,
 361         FRAME_BUTTON_ACTIVE = 2,
 362 };
 363
 364 enum frame_button_align {
 365         FRAME_BUTTON_RIGHT = 0,
 366         FRAME_BUTTON_LEFT = 1,
 367 };
 368
 369 enum frame_button_decoration {
 370         FRAME_BUTTON_NONE = 0,
 371         FRAME_BUTTON_FANCY = 1,
 372 };
 373
 374 struct frame_button {
 375         struct widget *widget;
 376         struct frame *frame;
 377         cairo_surface_t *icon;
 378         enum frame_button_action type;
 379         enum frame_button_pointer state;
 380         struct wl_list link;    /* buttons_list */
 381         enum frame_button_align align;
 382         enum frame_button_decoration decoration;
 383 };
 384
 385 struct frame {
 386         struct widget *widget;
 387         struct widget *child;
 388         struct wl_list buttons_list;
 389 };
 390
 391 struct menu {
 392         struct window *window;
 393         struct widget *widget;
 394         struct input *input;
 395         const char **entries;
 396         uint32_t time;
 397         int current;
 398         int count;
 399         int release_count;
 400         menu_func_t func;
 401 };
 402
 403 struct tooltip {
 404         struct widget *parent;
 405         struct window *window;
 406         struct widget *widget;
 407         char *entry;
 408         struct task tooltip_task;
 409         int tooltip_fd;
 410         float x, y;
 411 };
 412
 413 struct shm_pool {
 414         struct wl_shm_pool *pool;
 415         size_t size;
 416         size_t used;
 417         void *data;
 418 };
 419
 420 enum {
 421         CURSOR_DEFAULT = 100,
 422         CURSOR_UNSET
 423 };
 424
 425 enum window_location {
 426         WINDOW_INTERIOR = 0,
 427         WINDOW_RESIZING_TOP = 1,
 428         WINDOW_RESIZING_BOTTOM = 2,
 429         WINDOW_RESIZING_LEFT = 4,
 430         WINDOW_RESIZING_TOP_LEFT = 5,
 431         WINDOW_RESIZING_BOTTOM_LEFT = 6,
 432         WINDOW_RESIZING_RIGHT = 8,
 433         WINDOW_RESIZING_TOP_RIGHT = 9,
 434         WINDOW_RESIZING_BOTTOM_RIGHT = 10,
 435         WINDOW_RESIZING_MASK = 15,
 436         WINDOW_EXTERIOR = 16,
 437         WINDOW_TITLEBAR = 17,
 438         WINDOW_CLIENT_AREA = 18,
 439 };
 440
 441 static const cairo_user_data_key_t shm_surface_data_key;
 442
 443 /* #define DEBUG */
 444
 445 #ifdef DEBUG
 446
 447 static void
 448 debug_print(void *proxy, int line, const char *func, const char *fmt, ...)
 449 __attribute__ ((format (printf, 4, 5)));
 450
 451 static void
 452 debug_print(void *proxy, int line, const char *func, const char *fmt, ...)
 453 {
 454         va_list ap;
 455         struct timeval tv;
 456
 457         gettimeofday(&tv, NULL);
 458         fprintf(stderr, "%8ld.%03ld ",
 459                 (long)tv.tv_sec & 0xffff, (long)tv.tv_usec / 1000);
 460
 461         if (proxy)
 462                 fprintf(stderr, "%s@%d ",
 463                         wl_proxy_get_class(proxy), wl_proxy_get_id(proxy));
 464
 465         /*fprintf(stderr, __FILE__ ":%d:%s ", line, func);*/
 466         fprintf(stderr, "%s ", func);
 467
 468         va_start(ap, fmt);
 469         vfprintf(stderr, fmt, ap);
 470         va_end(ap);
 471 }
 472
 473 #define DBG(fmt, ...) \
 474         debug_print(NULL, __LINE__, __func__, fmt, ##__VA_ARGS__)
 475
 476 #define DBG_OBJ(obj, fmt, ...) \
 477         debug_print(obj, __LINE__, __func__, fmt, ##__VA_ARGS__)
 478
 479 #else
 480
 481 #define DBG(...) do {} while (0)
 482 #define DBG_OBJ(...) do {} while (0)
 483
 484 #endif
 485
 486 static void
 487 surface_to_buffer_size (enum wl_output_transform buffer_transform, int32_t buffer_scale, int32_t *width, int32_t *height)
 488 {
 489         int32_t tmp;
 490
 491         switch (buffer_transform) {
 492         case WL_OUTPUT_TRANSFORM_90:
 493         case WL_OUTPUT_TRANSFORM_270:
 494         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
 495         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
 496                 tmp = *width;
 497                 *width = *height;
 498                 *height = tmp;
 499                 break;
 500         default:
 501                 break;
 502         }
 503
 504         *width *= buffer_scale;
 505         *height *= buffer_scale;
 506 }
 507
 508 static void
 509 buffer_to_surface_size (enum wl_output_transform buffer_transform, int32_t buffer_scale, int32_t *width, int32_t *height)
 510 {
 511         int32_t tmp;
 512
 513         switch (buffer_transform) {
 514         case WL_OUTPUT_TRANSFORM_90:
 515         case WL_OUTPUT_TRANSFORM_270:
 516         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
 517         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
 518                 tmp = *width;
 519                 *width = *height;
 520                 *height = tmp;
 521                 break;
 522         default:
 523                 break;
 524         }
 525
 526         *width /= buffer_scale;
 527         *height /= buffer_scale;
 528 }
 529
 530 #ifdef HAVE_CAIRO_EGL
 531
 532 struct egl_window_surface {
 533         struct toysurface base;
 534         cairo_surface_t *cairo_surface;
 535         struct display *display;
 536         struct wl_surface *surface;
 537         struct wl_egl_window *egl_window;
 538         EGLSurface egl_surface;
 539 };
 540
 541 static struct egl_window_surface *
 542 to_egl_window_surface(struct toysurface *base)
 543 {
 544         return container_of(base, struct egl_window_surface, base);
 545 }
 546
 547 static cairo_surface_t *
 548 egl_window_surface_prepare(struct toysurface *base, int dx, int dy,
 549                            int32_t width, int32_t height, uint32_t flags,
 550                            enum wl_output_transform buffer_transform, int32_t buffer_scale)
 551 {
 552         struct egl_window_surface *surface = to_egl_window_surface(base);
 553
 554         surface_to_buffer_size (buffer_transform, buffer_scale, &width, &height);
 555
 556         wl_egl_window_resize(surface->egl_window, width, height, dx, dy);
 557         cairo_gl_surface_set_size(surface->cairo_surface, width, height);
 558
 559         return cairo_surface_reference(surface->cairo_surface);
 560 }
 561
 562 static void
 563 egl_window_surface_swap(struct toysurface *base,
 564                         enum wl_output_transform buffer_transform, int32_t buffer_scale,
 565                         struct rectangle *server_allocation)
 566 {
 567         struct egl_window_surface *surface = to_egl_window_surface(base);
 568
 569         cairo_gl_surface_swapbuffers(surface->cairo_surface);
 570         wl_egl_window_get_attached_size(surface->egl_window,
 571                                         &server_allocation->width,
 572                                         &server_allocation->height);
 573
 574         buffer_to_surface_size (buffer_transform, buffer_scale,
 575                                 &server_allocation->width,
 576                                 &server_allocation->height);
 577 }
 578
 579 static int
 580 egl_window_surface_acquire(struct toysurface *base, EGLContext ctx)
 581 {
 582         struct egl_window_surface *surface = to_egl_window_surface(base);
 583         cairo_device_t *device;
 584
 585         device = cairo_surface_get_device(surface->cairo_surface);
 586         if (!device)
 587                 return -1;
 588
 589         if (!ctx) {
 590                 if (device == surface->display->argb_device)
 591                         ctx = surface->display->argb_ctx;
 592                 else
 593                         assert(0);
 594         }
 595
 596         cairo_device_flush(device);
 597         cairo_device_acquire(device);
 598         if (!eglMakeCurrent(surface->display->dpy, surface->egl_surface,
 599                             surface->egl_surface, ctx))
 600                 fprintf(stderr, "failed to make surface current\n");
 601
 602         return 0;
 603 }
 604
 605 static void
 606 egl_window_surface_release(struct toysurface *base)
 607 {
 608         struct egl_window_surface *surface = to_egl_window_surface(base);
 609         cairo_device_t *device;
 610
 611         device = cairo_surface_get_device(surface->cairo_surface);
 612         if (!device)
 613                 return;
 614
 615         if (!eglMakeCurrent(surface->display->dpy, NULL, NULL,
 616                             surface->display->argb_ctx))
 617                 fprintf(stderr, "failed to make context current\n");
 618
 619         cairo_device_release(device);
 620 }
 621
 622 static void
 623 egl_window_surface_destroy(struct toysurface *base)
 624 {
 625         struct egl_window_surface *surface = to_egl_window_surface(base);
 626         struct display *d = surface->display;
 627
 628         cairo_surface_destroy(surface->cairo_surface);
 629         eglDestroySurface(d->dpy, surface->egl_surface);
 630         wl_egl_window_destroy(surface->egl_window);
 631         surface->surface = NULL;
 632
 633         free(surface);
 634 }
 635
 636 static struct toysurface *
 637 egl_window_surface_create(struct display *display,
 638                           struct wl_surface *wl_surface,
 639                           uint32_t flags,
 640                           struct rectangle *rectangle)
 641 {
 642         struct egl_window_surface *surface;
 643
 644         if (display->dpy == EGL_NO_DISPLAY)
 645                 return NULL;
 646
 647         surface = calloc(1, sizeof *surface);
 648         if (!surface)
 649                 return NULL;
 650
 651         surface->base.prepare = egl_window_surface_prepare;
 652         surface->base.swap = egl_window_surface_swap;
 653         surface->base.acquire = egl_window_surface_acquire;
 654         surface->base.release = egl_window_surface_release;
 655         surface->base.destroy = egl_window_surface_destroy;
 656
 657         surface->display = display;
 658         surface->surface = wl_surface;
 659
 660         surface->egl_window = wl_egl_window_create(surface->surface,
 661                                                    rectangle->width,
 662                                                    rectangle->height);
 663
 664         surface->egl_surface = eglCreateWindowSurface(display->dpy,
 665                                                       display->argb_config,
 666                                                       surface->egl_window,
 667                                                       NULL);
 668
 669         surface->cairo_surface =
 670                 cairo_gl_surface_create_for_egl(display->argb_device,
 671                                                 surface->egl_surface,
 672                                                 rectangle->width,
 673                                                 rectangle->height);
 674
 675         return &surface->base;
 676 }
 677
 678 #else
 679
 680 static struct toysurface *
 681 egl_window_surface_create(struct display *display,
 682                           struct wl_surface *wl_surface,
 683                           uint32_t flags,
 684                           struct rectangle *rectangle)
 685 {
 686         return NULL;
 687 }
 688
 689 #endif
 690
 691 struct shm_surface_data {
 692         struct wl_buffer *buffer;
 693         struct shm_pool *pool;
 694 };
 695
 696 struct wl_buffer *
 697 display_get_buffer_for_surface(struct display *display,
 698                                cairo_surface_t *surface)
 699 {
 700         struct shm_surface_data *data;
 701
 702         data = cairo_surface_get_user_data(surface, &shm_surface_data_key);
 703
 704         return data->buffer;
 705 }
 706
 707 static void
 708 shm_pool_destroy(struct shm_pool *pool);
 709
 710 static void
 711 shm_surface_data_destroy(void *p)
 712 {
 713         struct shm_surface_data *data = p;
 714
 715         wl_buffer_destroy(data->buffer);
 716         if (data->pool)
 717                 shm_pool_destroy(data->pool);
 718
 719         free(data);
 720 }
 721
 722 static struct wl_shm_pool *
 723 make_shm_pool(struct display *display, int size, void **data)
 724 {
 725         struct wl_shm_pool *pool;
 726         int fd;
 727
 728         fd = os_create_anonymous_file(size);
 729         if (fd < 0) {
 730                 fprintf(stderr, "creating a buffer file for %d B failed: %m\n",
 731                         size);
 732                 return NULL;
 733         }
 734
 735         *data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 736         if (*data == MAP_FAILED) {
 737                 fprintf(stderr, "mmap failed: %m\n");
 738                 close(fd);
 739                 return NULL;
 740         }
 741
 742         pool = wl_shm_create_pool(display->shm, fd, size);
 743
 744         close(fd);
 745
 746         return pool;
 747 }
 748
 749 static struct shm_pool *
 750 shm_pool_create(struct display *display, size_t size)
 751 {
 752         struct shm_pool *pool = malloc(sizeof *pool);
 753
 754         if (!pool)
 755                 return NULL;
 756
 757         pool->pool = make_shm_pool(display, size, &pool->data);
 758         if (!pool->pool) {
 759                 free(pool);
 760                 return NULL;
 761         }
 762
 763         pool->size = size;
 764         pool->used = 0;
 765
 766         return pool;
 767 }
 768
 769 static void *
 770 shm_pool_allocate(struct shm_pool *pool, size_t size, int *offset)
 771 {
 772         if (pool->used + size > pool->size)
 773                 return NULL;
 774
 775         *offset = pool->used;
 776         pool->used += size;
 777
 778         return (char *) pool->data + *offset;
 779 }
 780
 781 /* destroy the pool. this does not unmap the memory though */
 782 static void
 783 shm_pool_destroy(struct shm_pool *pool)
 784 {
 785         munmap(pool->data, pool->size);
 786         wl_shm_pool_destroy(pool->pool);
 787         free(pool);
 788 }
 789
 790 /* Start allocating from the beginning of the pool again */
 791 static void
 792 shm_pool_reset(struct shm_pool *pool)
 793 {
 794         pool->used = 0;
 795 }
 796
 797 static int
 798 data_length_for_shm_surface(struct rectangle *rect)
 799 {
 800         int stride;
 801
 802         stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32,
 803                                                 rect->width);
 804         return stride * rect->height;
 805 }
 806
 807 static cairo_surface_t *
 808 display_create_shm_surface_from_pool(struct display *display,
 809                                      struct rectangle *rectangle,
 810                                      uint32_t flags, struct shm_pool *pool)
 811 {
 812         struct shm_surface_data *data;
 813         uint32_t format;
 814         cairo_surface_t *surface;
 815         cairo_format_t cairo_format;
 816         int stride, length, offset;
 817         void *map;
 818
 819         data = malloc(sizeof *data);
 820         if (data == NULL)
 821                 return NULL;
 822
 823         if (flags & SURFACE_HINT_RGB565 && display->has_rgb565)
 824                 cairo_format = CAIRO_FORMAT_RGB16_565;
 825         else
 826                 cairo_format = CAIRO_FORMAT_ARGB32;
 827
 828         stride = cairo_format_stride_for_width (cairo_format, rectangle->width);
 829         length = stride * rectangle->height;
 830         data->pool = NULL;
 831         map = shm_pool_allocate(pool, length, &offset);
 832
 833         if (!map) {
 834                 free(data);
 835                 return NULL;
 836         }
 837
 838         surface = cairo_image_surface_create_for_data (map,
 839                                                        cairo_format,
 840                                                        rectangle->width,
 841                                                        rectangle->height,
 842                                                        stride);
 843
 844         cairo_surface_set_user_data(surface, &shm_surface_data_key,
 845                                     data, shm_surface_data_destroy);
 846
 847         if (flags & SURFACE_HINT_RGB565 && display->has_rgb565)
 848                 format = WL_SHM_FORMAT_RGB565;
 849         else {
 850                 if (flags & SURFACE_OPAQUE)
 851                         format = WL_SHM_FORMAT_XRGB8888;
 852                 else
 853                         format = WL_SHM_FORMAT_ARGB8888;
 854         }
 855
 856         data->buffer = wl_shm_pool_create_buffer(pool->pool, offset,
 857                                                  rectangle->width,
 858                                                  rectangle->height,
 859                                                  stride, format);
 860
 861         return surface;
 862 }
 863
 864 static cairo_surface_t *
 865 display_create_shm_surface(struct display *display,
 866                            struct rectangle *rectangle, uint32_t flags,
 867                            struct shm_pool *alternate_pool,
 868                            struct shm_surface_data **data_ret)
 869 {
 870         struct shm_surface_data *data;
 871         struct shm_pool *pool;
 872         cairo_surface_t *surface;
 873
 874         if (alternate_pool) {
 875                 shm_pool_reset(alternate_pool);
 876                 surface = display_create_shm_surface_from_pool(display,
 877                                                                rectangle,
 878                                                                flags,
 879                                                                alternate_pool);
 880                 if (surface) {
 881                         data = cairo_surface_get_user_data(surface,
 882                                                            &shm_surface_data_key);
 883                         goto out;
 884                 }
 885         }
 886
 887         pool = shm_pool_create(display,
 888                                data_length_for_shm_surface(rectangle));
 889         if (!pool)
 890                 return NULL;
 891
 892         surface =
 893                 display_create_shm_surface_from_pool(display, rectangle,
 894                                                      flags, pool);
 895
 896         if (!surface) {
 897                 shm_pool_destroy(pool);
 898                 return NULL;
 899         }
 900
 901         /* make sure we destroy the pool when the surface is destroyed */
 902         data = cairo_surface_get_user_data(surface, &shm_surface_data_key);
 903         data->pool = pool;
 904
 905 out:
 906         if (data_ret)
 907                 *data_ret = data;
 908
 909         return surface;
 910 }
 911
 912 static int
 913 check_size(struct rectangle *rect)
 914 {
 915         if (rect->width && rect->height)
 916                 return 0;
 917
 918         fprintf(stderr, "tried to create surface of "
 919                 "width: %d, height: %d\n", rect->width, rect->height);
 920         return -1;
 921 }
 922
 923 cairo_surface_t *
 924 display_create_surface(struct display *display,
 925                        struct wl_surface *surface,
 926                        struct rectangle *rectangle,
 927                        uint32_t flags)
 928 {
 929         if (check_size(rectangle) < 0)
 930                 return NULL;
 931
 932         assert(flags & SURFACE_SHM);
 933         return display_create_shm_surface(display, rectangle, flags,
 934                                           NULL, NULL);
 935 }
 936
 937 struct shm_surface_leaf {
 938         cairo_surface_t *cairo_surface;
 939         /* 'data' is automatically destroyed, when 'cairo_surface' is */
 940         struct shm_surface_data *data;
 941
 942         struct shm_pool *resize_pool;
 943         int busy;
 944 };
 945
 946 static void
 947 shm_surface_leaf_release(struct shm_surface_leaf *leaf)
 948 {
 949         if (leaf->cairo_surface)
 950                 cairo_surface_destroy(leaf->cairo_surface);
 951         /* leaf->data already destroyed via cairo private */
 952
 953         if (leaf->resize_pool)
 954                 shm_pool_destroy(leaf->resize_pool);
 955
 956         memset(leaf, 0, sizeof *leaf);
 957 }
 958
 959 #define MAX_LEAVES 3
 960
 961 struct shm_surface {
 962         struct toysurface base;
 963         struct display *display;
 964         struct wl_surface *surface;
 965         uint32_t flags;
 966         int dx, dy;
 967
 968         struct shm_surface_leaf leaf[MAX_LEAVES];
 969         struct shm_surface_leaf *current;
 970 };
 971
 972 static struct shm_surface *
 973 to_shm_surface(struct toysurface *base)
 974 {
 975         return container_of(base, struct shm_surface, base);
 976 }
 977
 978 static void
 979 shm_surface_buffer_state_debug(struct shm_surface *surface, const char *msg)
 980 {
 981 #ifdef DEBUG
 982         struct shm_surface_leaf *leaf;
 983         char bufs[MAX_LEAVES + 1];
 984         int i;
 985
 986         for (i = 0; i < MAX_LEAVES; i++) {
 987                 leaf = &surface->leaf[i];
 988
 989                 if (leaf->busy)
 990                         bufs[i] = 'b';
 991                 else if (leaf->cairo_surface)
 992                         bufs[i] = 'a';
 993                 else
 994                         bufs[i] = ' ';
 995         }
 996
 997         bufs[MAX_LEAVES] = '\0';
 998         DBG_OBJ(surface->surface, "%s, leaves [%s]\n", msg, bufs);
 999 #endif
1000 }
1001
1002 static void
1003 shm_surface_buffer_release(void *data, struct wl_buffer *buffer)
1004 {
1005         struct shm_surface *surface = data;
1006         struct shm_surface_leaf *leaf;
1007         int i;
1008         int free_found;
1009
1010         shm_surface_buffer_state_debug(surface, "buffer_release before");
1011
1012         for (i = 0; i < MAX_LEAVES; i++) {
1013                 leaf = &surface->leaf[i];
1014                 if (leaf->data && leaf->data->buffer == buffer) {
1015                         leaf->busy = 0;
1016                         break;
1017                 }
1018         }
1019         assert(i < MAX_LEAVES && "unknown buffer released");
1020
1021         /* Leave one free leaf with storage, release others */
1022         free_found = 0;
1023         for (i = 0; i < MAX_LEAVES; i++) {
1024                 leaf = &surface->leaf[i];
1025
1026                 if (!leaf->cairo_surface || leaf->busy)
1027                         continue;
1028
1029                 if (!free_found)
1030                         free_found = 1;
1031                 else
1032                         shm_surface_leaf_release(leaf);
1033         }
1034
1035         shm_surface_buffer_state_debug(surface, "buffer_release  after");
1036 }
1037
1038 static const struct wl_buffer_listener shm_surface_buffer_listener = {
1039         shm_surface_buffer_release
1040 };
1041
1042 static cairo_surface_t *
1043 shm_surface_prepare(struct toysurface *base, int dx, int dy,
1044                     int32_t width, int32_t height, uint32_t flags,
1045                     enum wl_output_transform buffer_transform, int32_t buffer_scale)
1046 {
1047         int resize_hint = !!(flags & SURFACE_HINT_RESIZE);
1048         struct shm_surface *surface = to_shm_surface(base);
1049         struct rectangle rect = { 0};
1050         struct shm_surface_leaf *leaf = NULL;
1051         int i;
1052
1053         surface->dx = dx;
1054         surface->dy = dy;
1055
1056         /* pick a free buffer, preferrably one that already has storage */
1057         for (i = 0; i < MAX_LEAVES; i++) {
1058                 if (surface->leaf[i].busy)
1059                         continue;
1060
1061                 if (!leaf || surface->leaf[i].cairo_surface)
1062                         leaf = &surface->leaf[i];
1063         }
1064         DBG_OBJ(surface->surface, "pick leaf %d\n",
1065                 (int)(leaf - &surface->leaf[0]));
1066
1067         if (!leaf) {
1068                 fprintf(stderr, "%s: all buffers are held by the server.\n",
1069                         __func__);
1070                 exit(1);
1071                 return NULL;
1072         }
1073
1074         if (!resize_hint && leaf->resize_pool) {
1075                 cairo_surface_destroy(leaf->cairo_surface);
1076                 leaf->cairo_surface = NULL;
1077                 shm_pool_destroy(leaf->resize_pool);
1078                 leaf->resize_pool = NULL;
1079         }
1080
1081         surface_to_buffer_size (buffer_transform, buffer_scale, &width, &height);
1082
1083         if (leaf->cairo_surface &&
1084             cairo_image_surface_get_width(leaf->cairo_surface) == width &&
1085             cairo_image_surface_get_height(leaf->cairo_surface) == height)
1086                 goto out;
1087
1088         if (leaf->cairo_surface)
1089                 cairo_surface_destroy(leaf->cairo_surface);
1090
1091 #ifdef USE_RESIZE_POOL
1092         if (resize_hint && !leaf->resize_pool) {
1093                 /* Create a big pool to allocate from, while continuously
1094                  * resizing. Mmapping a new pool in the server
1095                  * is relatively expensive, so reusing a pool performs
1096                  * better, but may temporarily reserve unneeded memory.
1097                  */
1098                 /* We should probably base this number on the output size. */
1099                 leaf->resize_pool = shm_pool_create(surface->display,
1100                                                     6 * 1024 * 1024);
1101         }
1102 #endif
1103
1104         rect.width = width;
1105         rect.height = height;
1106
1107         leaf->cairo_surface =
1108                 display_create_shm_surface(surface->display, &rect,
1109                                            surface->flags,
1110                                            leaf->resize_pool,
1111                                            &leaf->data);
1112         wl_buffer_add_listener(leaf->data->buffer,
1113                                &shm_surface_buffer_listener, surface);
1114
1115 out:
1116         surface->current = leaf;
1117
1118         return cairo_surface_reference(leaf->cairo_surface);
1119 }
1120
1121 static void
1122 shm_surface_swap(struct toysurface *base,
1123                  enum wl_output_transform buffer_transform, int32_t buffer_scale,
1124                  struct rectangle *server_allocation)
1125 {
1126         struct shm_surface *surface = to_shm_surface(base);
1127         struct shm_surface_leaf *leaf = surface->current;
1128
1129         server_allocation->width =
1130                 cairo_image_surface_get_width(leaf->cairo_surface);
1131         server_allocation->height =
1132                 cairo_image_surface_get_height(leaf->cairo_surface);
1133
1134         buffer_to_surface_size (buffer_transform, buffer_scale,
1135                                 &server_allocation->width,
1136                                 &server_allocation->height);
1137
1138         wl_surface_attach(surface->surface, leaf->data->buffer,
1139                           surface->dx, surface->dy);
1140         wl_surface_damage(surface->surface, 0, 0,
1141                           server_allocation->width, server_allocation->height);
1142         wl_surface_commit(surface->surface);
1143
1144         DBG_OBJ(surface->surface, "leaf %d busy\n",
1145                 (int)(leaf - &surface->leaf[0]));
1146
1147         leaf->busy = 1;
1148         surface->current = NULL;
1149 }
1150
1151 static int
1152 shm_surface_acquire(struct toysurface *base, EGLContext ctx)
1153 {
1154         return -1;
1155 }
1156
1157 static void
1158 shm_surface_release(struct toysurface *base)
1159 {
1160 }
1161
1162 static void
1163 shm_surface_destroy(struct toysurface *base)
1164 {
1165         struct shm_surface *surface = to_shm_surface(base);
1166         int i;
1167
1168         for (i = 0; i < MAX_LEAVES; i++)
1169                 shm_surface_leaf_release(&surface->leaf[i]);
1170
1171         free(surface);
1172 }
1173
1174 static struct toysurface *
1175 shm_surface_create(struct display *display, struct wl_surface *wl_surface,
1176                    uint32_t flags, struct rectangle *rectangle)
1177 {
1178         struct shm_surface *surface;
1179         DBG_OBJ(wl_surface, "\n");
1180
1181         surface = xmalloc(sizeof *surface);
1182         memset(surface, 0, sizeof *surface);
1183
1184         if (!surface)
1185                 return NULL;
1186
1187         surface->base.prepare = shm_surface_prepare;
1188         surface->base.swap = shm_surface_swap;
1189         surface->base.acquire = shm_surface_acquire;
1190         surface->base.release = shm_surface_release;
1191         surface->base.destroy = shm_surface_destroy;
1192
1193         surface->display = display;
1194         surface->surface = wl_surface;
1195         surface->flags = flags;
1196
1197         return &surface->base;
1198 }
1199
1200 /*
1201  * The following correspondences between file names and cursors was copied
1202  * from: https://bugs.kde.org/attachment.cgi?id=67313
1203  */
1204
1205 static const char *bottom_left_corners[] = {
1206         "bottom_left_corner",
1207         "sw-resize",
1208         "size_bdiag"
1209 };
1210
1211 static const char *bottom_right_corners[] = {
1212         "bottom_right_corner",
1213         "se-resize",
1214         "size_fdiag"
1215 };
1216
1217 static const char *bottom_sides[] = {
1218         "bottom_side",
1219         "s-resize",
1220         "size_ver"
1221 };
1222
1223 static const char *grabbings[] = {
1224         "grabbing",
1225         "closedhand",
1226         "208530c400c041818281048008011002"
1227 };
1228
1229 static const char *left_ptrs[] = {
1230         "left_ptr",
1231         "default",
1232         "top_left_arrow",
1233         "left-arrow"
1234 };
1235
1236 static const char *left_sides[] = {
1237         "left_side",
1238         "w-resize",
1239         "size_hor"
1240 };
1241
1242 static const char *right_sides[] = {
1243         "right_side",
1244         "e-resize",
1245         "size_hor"
1246 };
1247
1248 static const char *top_left_corners[] = {
1249         "top_left_corner",
1250         "nw-resize",
1251         "size_fdiag"
1252 };
1253
1254 static const char *top_right_corners[] = {
1255         "top_right_corner",
1256         "ne-resize",
1257         "size_bdiag"
1258 };
1259
1260 static const char *top_sides[] = {
1261         "top_side",
1262         "n-resize",
1263         "size_ver"
1264 };
1265
1266 static const char *xterms[] = {
1267         "xterm",
1268         "ibeam",
1269         "text"
1270 };
1271
1272 static const char *hand1s[] = {
1273         "hand1",
1274         "pointer",
1275         "pointing_hand",
1276         "e29285e634086352946a0e7090d73106"
1277 };
1278
1279 static const char *watches[] = {
1280         "watch",
1281         "wait",
1282         "0426c94ea35c87780ff01dc239897213"
1283 };
1284
1285 struct cursor_alternatives {
1286         const char **names;
1287         size_t count;
1288 };
1289
1290 static const struct cursor_alternatives cursors[] = {
1291         {bottom_left_corners, ARRAY_LENGTH(bottom_left_corners)},
1292         {bottom_right_corners, ARRAY_LENGTH(bottom_right_corners)},
1293         {bottom_sides, ARRAY_LENGTH(bottom_sides)},
1294         {grabbings, ARRAY_LENGTH(grabbings)},
1295         {left_ptrs, ARRAY_LENGTH(left_ptrs)},
1296         {left_sides, ARRAY_LENGTH(left_sides)},
1297         {right_sides, ARRAY_LENGTH(right_sides)},
1298         {top_left_corners, ARRAY_LENGTH(top_left_corners)},
1299         {top_right_corners, ARRAY_LENGTH(top_right_corners)},
1300         {top_sides, ARRAY_LENGTH(top_sides)},
1301         {xterms, ARRAY_LENGTH(xterms)},
1302         {hand1s, ARRAY_LENGTH(hand1s)},
1303         {watches, ARRAY_LENGTH(watches)},
1304 };
1305
1306 static void
1307 create_cursors(struct display *display)
1308 {
1309         int config_fd;
1310         char *theme = NULL;
1311         unsigned int size = 32;
1312         unsigned int i, j;
1313         struct wl_cursor *cursor;
1314         struct config_key shell_keys[] = {
1315                 { "cursor-theme", CONFIG_KEY_STRING, &theme },
1316                 { "cursor-size", CONFIG_KEY_UNSIGNED_INTEGER, &size },
1317         };
1318         struct config_section cs[] = {
1319                 { "shell", shell_keys, ARRAY_LENGTH(shell_keys), NULL },
1320         };
1321
1322         config_fd = open_config_file("weston.ini");
1323         parse_config_file(config_fd, cs, ARRAY_LENGTH(cs), NULL);
1324         close(config_fd);
1325
1326         display->cursor_theme = wl_cursor_theme_load(theme, size, display->shm);
1327         display->cursors =
1328                 xmalloc(ARRAY_LENGTH(cursors) * sizeof display->cursors[0]);
1329
1330         for (i = 0; i < ARRAY_LENGTH(cursors); i++) {
1331                 cursor = NULL;
1332                 for (j = 0; !cursor && j < cursors[i].count; ++j)
1333                         cursor = wl_cursor_theme_get_cursor(
1334                             display->cursor_theme, cursors[i].names[j]);
1335
1336                 if (!cursor)
1337                         fprintf(stderr, "could not load cursor '%s'\n",
1338                                 cursors[i].names[0]);
1339
1340                 display->cursors[i] = cursor;
1341         }
1342 }
1343
1344 static void
1345 destroy_cursors(struct display *display)
1346 {
1347         wl_cursor_theme_destroy(display->cursor_theme);
1348         free(display->cursors);
1349 }
1350
1351 struct wl_cursor_image *
1352 display_get_pointer_image(struct display *display, int pointer)
1353 {
1354         struct wl_cursor *cursor = display->cursors[pointer];
1355
1356         return cursor ? cursor->images[0] : NULL;
1357 }
1358
1359 static void
1360 surface_flush(struct surface *surface)
1361 {
1362         if (!surface->cairo_surface)
1363                 return;
1364
1365         if (surface->opaque_region) {
1366                 wl_surface_set_opaque_region(surface->surface,
1367                                              surface->opaque_region);
1368                 wl_region_destroy(surface->opaque_region);
1369                 surface->opaque_region = NULL;
1370         }
1371
1372         if (surface->input_region) {
1373                 wl_surface_set_input_region(surface->surface,
1374                                             surface->input_region);
1375                 wl_region_destroy(surface->input_region);
1376                 surface->input_region = NULL;
1377         }
1378
1379         surface->toysurface->swap(surface->toysurface,
1380                                   surface->buffer_transform, surface->buffer_scale,
1381                                   &surface->server_allocation);
1382
1383         cairo_surface_destroy(surface->cairo_surface);
1384         surface->cairo_surface = NULL;
1385 }
1386
1387 int
1388 window_has_focus(struct window *window)
1389 {
1390         return window->focus_count > 0;
1391 }
1392
1393 static void
1394 window_flush(struct window *window)
1395 {
1396         struct surface *surface;
1397
1398         if (window->type == TYPE_NONE) {
1399                 window->type = TYPE_TOPLEVEL;
1400                 if (window->shell_surface)
1401                         wl_shell_surface_set_toplevel(window->shell_surface);
1402         }
1403
1404         wl_list_for_each(surface, &window->subsurface_list, link) {
1405                 if (surface == window->main_surface)
1406                         continue;
1407
1408                 surface_flush(surface);
1409         }
1410
1411         surface_flush(window->main_surface);
1412 }
1413
1414 struct display *
1415 window_get_display(struct window *window)
1416 {
1417         return window->display;
1418 }
1419
1420 static void
1421 surface_create_surface(struct surface *surface, int dx, int dy, uint32_t flags)
1422 {
1423         struct display *display = surface->window->display;
1424         struct rectangle allocation = surface->allocation;
1425
1426         if (!surface->toysurface && display->dpy &&
1427             surface->buffer_type == WINDOW_BUFFER_TYPE_EGL_WINDOW) {
1428                 surface->toysurface =
1429                         egl_window_surface_create(display,
1430                                                   surface->surface,
1431                                                   flags,
1432                                                   &allocation);
1433         }
1434
1435         if (!surface->toysurface)
1436                 surface->toysurface = shm_surface_create(display,
1437                                                          surface->surface,
1438                                                          flags, &allocation);
1439
1440         surface->cairo_surface = surface->toysurface->prepare(
1441                 surface->toysurface, dx, dy,
1442                 allocation.width, allocation.height, flags,
1443                 surface->buffer_transform, surface->buffer_scale);
1444 }
1445
1446 static void
1447 window_create_main_surface(struct window *window)
1448 {
1449         struct surface *surface = window->main_surface;
1450         uint32_t flags = 0;
1451         int dx = 0;
1452         int dy = 0;
1453
1454         if (window->resizing)
1455                 flags |= SURFACE_HINT_RESIZE;
1456
1457         if (window->preferred_format == WINDOW_PREFERRED_FORMAT_RGB565)
1458                 flags |= SURFACE_HINT_RGB565;
1459
1460         if (window->resize_edges & WINDOW_RESIZING_LEFT)
1461                 dx = surface->server_allocation.width -
1462                         surface->allocation.width;
1463
1464         if (window->resize_edges & WINDOW_RESIZING_TOP)
1465                 dy = surface->server_allocation.height -
1466                         surface->allocation.height;
1467
1468         window->resize_edges = 0;
1469
1470         surface_create_surface(surface, dx, dy, flags);
1471 }
1472
1473 int
1474 window_get_buffer_transform(struct window *window)
1475 {
1476         return window->main_surface->buffer_transform;
1477 }
1478
1479 void
1480 window_set_buffer_transform(struct window *window,
1481                             enum wl_output_transform transform)
1482 {
1483         window->main_surface->buffer_transform = transform;
1484         wl_surface_set_buffer_transform(window->main_surface->surface,
1485                                         transform);
1486 }
1487
1488 void
1489 window_set_buffer_scale(struct window *window,
1490                         int32_t scale)
1491 {
1492         window->main_surface->buffer_scale = scale;
1493         wl_surface_set_buffer_scale(window->main_surface->surface,
1494                                     scale);
1495 }
1496
1497 uint32_t
1498 window_get_buffer_scale(struct window *window)
1499 {
1500         return window->main_surface->buffer_scale;
1501 }
1502
1503 uint32_t
1504 window_get_output_scale(struct window *window)
1505 {
1506         struct window_output *window_output;
1507         struct window_output *window_output_tmp;
1508         int scale = 1;
1509
1510         wl_list_for_each_safe(window_output, window_output_tmp,
1511                               &window->window_output_list, link) {
1512                 if (window_output->output->scale > scale)
1513                         scale = window_output->output->scale;
1514         }
1515
1516         return scale;
1517 }
1518
1519 static void frame_destroy(struct frame *frame);
1520
1521 static void
1522 surface_destroy(struct surface *surface)
1523 {
1524         if (surface->frame_cb)
1525                 wl_callback_destroy(surface->frame_cb);
1526
1527         if (surface->input_region)
1528                 wl_region_destroy(surface->input_region);
1529
1530         if (surface->opaque_region)
1531                 wl_region_destroy(surface->opaque_region);
1532
1533         if (surface->subsurface)
1534                 wl_subsurface_destroy(surface->subsurface);
1535
1536         wl_surface_destroy(surface->surface);
1537
1538         if (surface->toysurface)
1539                 surface->toysurface->destroy(surface->toysurface);
1540
1541         wl_list_remove(&surface->link);
1542         free(surface);
1543 }
1544
1545 void
1546 window_destroy(struct window *window)
1547 {
1548         struct display *display = window->display;
1549         struct input *input;
1550         struct window_output *window_output;
1551         struct window_output *window_output_tmp;
1552
1553         wl_list_remove(&window->redraw_task.link);
1554
1555         wl_list_for_each(input, &display->input_list, link) {
1556                 if (input->touch_focus == window)
1557                         input->touch_focus = NULL;
1558                 if (input->pointer_focus == window)
1559                         input->pointer_focus = NULL;
1560                 if (input->keyboard_focus == window)
1561                         input->keyboard_focus = NULL;
1562                 if (input->focus_widget &&
1563                     input->focus_widget->window == window)
1564                         input->focus_widget = NULL;
1565         }
1566
1567         wl_list_for_each_safe(window_output, window_output_tmp,
1568                               &window->window_output_list, link) {
1569                 free (window_output);
1570         }
1571
1572         if (window->frame)
1573                 frame_destroy(window->frame);
1574
1575         if (window->shell_surface)
1576                 wl_shell_surface_destroy(window->shell_surface);
1577
1578         surface_destroy(window->main_surface);
1579
1580         wl_list_remove(&window->link);
1581
1582         free(window->title);
1583         free(window);
1584 }
1585
1586 static struct widget *
1587 widget_find_widget(struct widget *widget, int32_t x, int32_t y)
1588 {
1589         struct widget *child, *target;
1590
1591         wl_list_for_each(child, &widget->child_list, link) {
1592                 target = widget_find_widget(child, x, y);
1593                 if (target)
1594                         return target;
1595         }
1596
1597         if (widget->allocation.x <= x &&
1598             x < widget->allocation.x + widget->allocation.width &&
1599             widget->allocation.y <= y &&
1600             y < widget->allocation.y + widget->allocation.height) {
1601                 return widget;
1602         }
1603
1604         return NULL;
1605 }
1606
1607 static struct widget *
1608 window_find_widget(struct window *window, int32_t x, int32_t y)
1609 {
1610         struct surface *surface;
1611         struct widget *widget;
1612
1613         wl_list_for_each(surface, &window->subsurface_list, link) {
1614                 widget = widget_find_widget(surface->widget, x, y);
1615                 if (widget)
1616                         return widget;
1617         }
1618
1619         return NULL;
1620 }
1621
1622 static struct widget *
1623 widget_create(struct window *window, struct surface *surface, void *data)
1624 {
1625         struct widget *widget;
1626
1627         widget = xzalloc(sizeof *widget);
1628         widget->window = window;
1629         widget->surface = surface;
1630         widget->user_data = data;
1631         widget->allocation = surface->allocation;
1632         wl_list_init(&widget->child_list);
1633         widget->opaque = 0;
1634         widget->tooltip = NULL;
1635         widget->tooltip_count = 0;
1636         widget->default_cursor = CURSOR_LEFT_PTR;
1637
1638         return widget;
1639 }
1640
1641 struct widget *
1642 window_add_widget(struct window *window, void *data)
1643 {
1644         struct widget *widget;
1645
1646         widget = widget_create(window, window->main_surface, data);
1647         wl_list_init(&widget->link);
1648         window->main_surface->widget = widget;
1649
1650         return widget;
1651 }
1652
1653 struct widget *
1654 widget_add_widget(struct widget *parent, void *data)
1655 {
1656         struct widget *widget;
1657
1658         widget = widget_create(parent->window, parent->surface, data);
1659         wl_list_insert(parent->child_list.prev, &widget->link);
1660
1661         return widget;
1662 }
1663
1664 void
1665 widget_destroy(struct widget *widget)
1666 {
1667         struct display *display = widget->window->display;
1668         struct surface *surface = widget->surface;
1669         struct input *input;
1670
1671         /* Destroy the sub-surface along with the root widget */
1672         if (surface->widget == widget && surface->subsurface)
1673                 surface_destroy(widget->surface);
1674
1675         if (widget->tooltip) {
1676                 free(widget->tooltip);
1677                 widget->tooltip = NULL;
1678         }
1679
1680         wl_list_for_each(input, &display->input_list, link) {
1681                 if (input->focus_widget == widget)
1682                         input->focus_widget = NULL;
1683         }
1684
1685         wl_list_remove(&widget->link);
1686         free(widget);
1687 }
1688
1689 void
1690 widget_set_default_cursor(struct widget *widget, int cursor)
1691 {
1692         widget->default_cursor = cursor;
1693 }
1694
1695 void
1696 widget_get_allocation(struct widget *widget, struct rectangle *allocation)
1697 {
1698         *allocation = widget->allocation;
1699 }
1700
1701 void
1702 widget_set_size(struct widget *widget, int32_t width, int32_t height)
1703 {
1704         widget->allocation.width = width;
1705         widget->allocation.height = height;
1706 }
1707
1708 void
1709 widget_set_allocation(struct widget *widget,
1710                       int32_t x, int32_t y, int32_t width, int32_t height)
1711 {
1712         widget->allocation.x = x;
1713         widget->allocation.y = y;
1714         widget_set_size(widget, width, height);
1715 }
1716
1717 void
1718 widget_set_transparent(struct widget *widget, int transparent)
1719 {
1720         widget->opaque = !transparent;
1721 }
1722
1723 void *
1724 widget_get_user_data(struct widget *widget)
1725 {
1726         return widget->user_data;
1727 }
1728
1729 static cairo_surface_t *
1730 widget_get_cairo_surface(struct widget *widget)
1731 {
1732         struct surface *surface = widget->surface;
1733         struct window *window = widget->window;
1734
1735         if (!surface->cairo_surface) {
1736                 if (surface == window->main_surface)
1737                         window_create_main_surface(window);
1738                 else
1739                         surface_create_surface(surface, 0, 0, 0);
1740         }
1741
1742         return surface->cairo_surface;
1743 }
1744
1745 static void
1746 widget_cairo_update_transform(struct widget *widget, cairo_t *cr)
1747 {
1748         struct surface *surface = widget->surface;
1749         double angle;
1750         cairo_matrix_t m;
1751         enum wl_output_transform transform;
1752         int surface_width, surface_height;
1753         int translate_x, translate_y;
1754         int32_t scale;
1755
1756         surface_width = surface->allocation.width;
1757         surface_height = surface->allocation.height;
1758
1759         transform = surface->buffer_transform;
1760         scale = surface->buffer_scale;
1761
1762         switch (transform) {
1763         case WL_OUTPUT_TRANSFORM_FLIPPED:
1764         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
1765         case WL_OUTPUT_TRANSFORM_FLIPPED_180:
1766         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
1767                 cairo_matrix_init(&m, -1, 0, 0, 1, 0, 0);
1768                 break;
1769         default:
1770                 cairo_matrix_init_identity(&m);
1771                 break;
1772         }
1773
1774         switch (transform) {
1775         case WL_OUTPUT_TRANSFORM_NORMAL:
1776         default:
1777                 angle = 0;
1778                 translate_x = 0;
1779                 translate_y = 0;
1780                 break;
1781         case WL_OUTPUT_TRANSFORM_FLIPPED:
1782                 angle = 0;
1783                 translate_x = surface_width;
1784                 translate_y = 0;
1785                 break;
1786         case WL_OUTPUT_TRANSFORM_90:
1787                 angle = M_PI_2;
1788                 translate_x = surface_height;
1789                 translate_y = 0;
1790                 break;
1791         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
1792                 angle = M_PI_2;
1793                 translate_x = surface_height;
1794                 translate_y = surface_width;
1795                 break;
1796         case WL_OUTPUT_TRANSFORM_180:
1797                 angle = M_PI;
1798                 translate_x = surface_width;
1799                 translate_y = surface_height;
1800                 break;
1801         case WL_OUTPUT_TRANSFORM_FLIPPED_180:
1802                 angle = M_PI;
1803                 translate_x = 0;
1804                 translate_y = surface_height;
1805                 break;
1806         case WL_OUTPUT_TRANSFORM_270:
1807                 angle = M_PI + M_PI_2;
1808                 translate_x = 0;
1809                 translate_y = surface_width;
1810                 break;
1811         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
1812                 angle = M_PI + M_PI_2;
1813                 translate_x = 0;
1814                 translate_y = 0;
1815                 break;
1816         }
1817
1818         cairo_scale(cr, scale, scale);
1819         cairo_translate(cr, translate_x, translate_y);
1820         cairo_rotate(cr, angle);
1821         cairo_transform(cr, &m);
1822 }
1823
1824 cairo_t *
1825 widget_cairo_create(struct widget *widget)
1826 {
1827         struct surface *surface = widget->surface;
1828         cairo_surface_t *cairo_surface;
1829         cairo_t *cr;
1830
1831         cairo_surface = widget_get_cairo_surface(widget);
1832         cr = cairo_create(cairo_surface);
1833
1834         widget_cairo_update_transform(widget, cr);
1835
1836         cairo_translate(cr, -surface->allocation.x, -surface->allocation.y);
1837
1838         return cr;
1839 }
1840
1841 struct wl_surface *
1842 widget_get_wl_surface(struct widget *widget)
1843 {
1844         return widget->surface->surface;
1845 }
1846
1847 uint32_t
1848 widget_get_last_time(struct widget *widget)
1849 {
1850         return widget->surface->last_time;
1851 }
1852
1853 void
1854 widget_input_region_add(struct widget *widget, const struct rectangle *rect)
1855 {
1856         struct wl_compositor *comp = widget->window->display->compositor;
1857         struct surface *surface = widget->surface;
1858
1859         if (!surface->input_region)
1860                 surface->input_region = wl_compositor_create_region(comp);
1861
1862         if (rect) {
1863                 wl_region_add(surface->input_region,
1864                               rect->x, rect->y, rect->width, rect->height);
1865         }
1866 }
1867
1868 void
1869 widget_set_resize_handler(struct widget *widget,
1870                           widget_resize_handler_t handler)
1871 {
1872         widget->resize_handler = handler;
1873 }
1874
1875 void
1876 widget_set_redraw_handler(struct widget *widget,
1877                           widget_redraw_handler_t handler)
1878 {
1879         widget->redraw_handler = handler;
1880 }
1881
1882 void
1883 widget_set_enter_handler(struct widget *widget, widget_enter_handler_t handler)
1884 {
1885         widget->enter_handler = handler;
1886 }
1887
1888 void
1889 widget_set_leave_handler(struct widget *widget, widget_leave_handler_t handler)
1890 {
1891         widget->leave_handler = handler;
1892 }
1893
1894 void
1895 widget_set_motion_handler(struct widget *widget,
1896                           widget_motion_handler_t handler)
1897 {
1898         widget->motion_handler = handler;
1899 }
1900
1901 void
1902 widget_set_button_handler(struct widget *widget,
1903                           widget_button_handler_t handler)
1904 {
1905         widget->button_handler = handler;
1906 }
1907
1908 void
1909 widget_set_touch_up_handler(struct widget *widget,
1910                             widget_touch_up_handler_t handler)
1911 {
1912         widget->touch_up_handler = handler;
1913 }
1914
1915 void
1916 widget_set_touch_down_handler(struct widget *widget,
1917                               widget_touch_down_handler_t handler)
1918 {
1919         widget->touch_down_handler = handler;
1920 }
1921
1922 void
1923 widget_set_touch_motion_handler(struct widget *widget,
1924                                 widget_touch_motion_handler_t handler)
1925 {
1926         widget->touch_motion_handler = handler;
1927 }
1928
1929 void
1930 widget_set_touch_frame_handler(struct widget *widget,
1931                                widget_touch_frame_handler_t handler)
1932 {
1933         widget->touch_frame_handler = handler;
1934 }
1935
1936 void
1937 widget_set_touch_cancel_handler(struct widget *widget,
1938                                 widget_touch_cancel_handler_t handler)
1939 {
1940         widget->touch_cancel_handler = handler;
1941 }
1942
1943 void
1944 widget_set_axis_handler(struct widget *widget,
1945                         widget_axis_handler_t handler)
1946 {
1947         widget->axis_handler = handler;
1948 }
1949
1950 static void
1951 window_schedule_redraw_task(struct window *window);
1952
1953 void
1954 widget_schedule_redraw(struct widget *widget)
1955 {
1956         DBG_OBJ(widget->surface->surface, "widget %p\n", widget);
1957         widget->surface->redraw_needed = 1;
1958         window_schedule_redraw_task(widget->window);
1959 }
1960
1961 cairo_surface_t *
1962 window_get_surface(struct window *window)
1963 {
1964         cairo_surface_t *cairo_surface;
1965
1966         cairo_surface = widget_get_cairo_surface(window->main_surface->widget);
1967
1968         return cairo_surface_reference(cairo_surface);
1969 }
1970
1971 struct wl_surface *
1972 window_get_wl_surface(struct window *window)
1973 {
1974         return window->main_surface->surface;
1975 }
1976
1977 struct wl_shell_surface *
1978 window_get_wl_shell_surface(struct window *window)
1979 {
1980         return window->shell_surface;
1981 }
1982
1983 static void
1984 tooltip_redraw_handler(struct widget *widget, void *data)
1985 {
1986         cairo_t *cr;
1987         const int32_t r = 3;
1988         struct tooltip *tooltip = data;
1989         int32_t width, height;
1990
1991         cr = widget_cairo_create(widget);
1992         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1993         cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1994         cairo_paint(cr);
1995
1996         width = widget->allocation.width;
1997         height = widget->allocation.height;
1998         rounded_rect(cr, 0, 0, width, height, r);
1999
2000         cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
2001         cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8);
2002         cairo_fill(cr);
2003
2004         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
2005         cairo_move_to(cr, 10, 16);
2006         cairo_show_text(cr, tooltip->entry);
2007         cairo_destroy(cr);
2008 }
2009
2010 static cairo_text_extents_t
2011 get_text_extents(struct tooltip *tooltip)
2012 {
2013         cairo_t *cr;
2014         cairo_text_extents_t extents;
2015
2016         /* Use the dummy_surface because tooltip's surface was not
2017          * created yet, and parent does not have a valid surface
2018          * outside repaint, either.
2019          */
2020         cr = cairo_create(tooltip->window->display->dummy_surface);
2021         cairo_text_extents(cr, tooltip->entry, &extents);
2022         cairo_destroy(cr);
2023
2024         return extents;
2025 }
2026
2027 static int
2028 window_create_tooltip(struct tooltip *tooltip)
2029 {
2030         struct widget *parent = tooltip->parent;
2031         struct display *display = parent->window->display;
2032         struct window *window;
2033         const int offset_y = 27;
2034         const int margin = 3;
2035         cairo_text_extents_t extents;
2036
2037         if (tooltip->widget)
2038                 return 0;
2039
2040         window = window_create_transient(display, parent->window, tooltip->x,
2041                                          tooltip->y + offset_y,
2042                                          WL_SHELL_SURFACE_TRANSIENT_INACTIVE);
2043         if (!window)
2044                 return -1;
2045
2046         tooltip->window = window;
2047         tooltip->widget = window_add_widget(tooltip->window, tooltip);
2048
2049         extents = get_text_extents(tooltip);
2050         widget_set_redraw_handler(tooltip->widget, tooltip_redraw_handler);
2051         window_schedule_resize(window, extents.width + 20, 20 + margin * 2);
2052
2053         return 0;
2054 }
2055
2056 void
2057 widget_destroy_tooltip(struct widget *parent)
2058 {
2059         struct tooltip *tooltip = parent->tooltip;
2060
2061         parent->tooltip_count = 0;
2062         if (!tooltip)
2063                 return;
2064
2065         if (tooltip->widget) {
2066                 widget_destroy(tooltip->widget);
2067                 window_destroy(tooltip->window);
2068                 tooltip->widget = NULL;
2069                 tooltip->window = NULL;
2070         }
2071
2072         close(tooltip->tooltip_fd);
2073         free(tooltip->entry);
2074         free(tooltip);
2075         parent->tooltip = NULL;
2076 }
2077
2078 static void
2079 tooltip_func(struct task *task, uint32_t events)
2080 {
2081         struct tooltip *tooltip =
2082                 container_of(task, struct tooltip, tooltip_task);
2083         uint64_t exp;
2084
2085         if (read(tooltip->tooltip_fd, &exp, sizeof (uint64_t)) != sizeof (uint64_t))
2086                 abort();
2087         window_create_tooltip(tooltip);
2088 }
2089
2090 #define TOOLTIP_TIMEOUT 500
2091 static int
2092 tooltip_timer_reset(struct tooltip *tooltip)
2093 {
2094         struct itimerspec its;
2095
2096         its.it_interval.tv_sec = 0;
2097         its.it_interval.tv_nsec = 0;
2098         its.it_value.tv_sec = TOOLTIP_TIMEOUT / 1000;
2099         its.it_value.tv_nsec = (TOOLTIP_TIMEOUT % 1000) * 1000 * 1000;
2100         if (timerfd_settime(tooltip->tooltip_fd, 0, &its, NULL) < 0) {
2101                 fprintf(stderr, "could not set timerfd\n: %m");
2102                 return -1;
2103         }
2104
2105         return 0;
2106 }
2107
2108 int
2109 widget_set_tooltip(struct widget *parent, char *entry, float x, float y)
2110 {
2111         struct tooltip *tooltip = parent->tooltip;
2112
2113         parent->tooltip_count++;
2114         if (tooltip) {
2115                 tooltip->x = x;
2116                 tooltip->y = y;
2117                 tooltip_timer_reset(tooltip);
2118                 return 0;
2119         }
2120
2121         /* the handler might be triggered too fast via input device motion, so
2122          * we need this check here to make sure tooltip is fully initialized */
2123         if (parent->tooltip_count > 1)
2124                 return 0;
2125
2126         tooltip = malloc(sizeof *tooltip);
2127         if (!tooltip)
2128                 return -1;
2129
2130         parent->tooltip = tooltip;
2131         tooltip->parent = parent;
2132         tooltip->widget = NULL;
2133         tooltip->window = NULL;
2134         tooltip->x = x;
2135         tooltip->y = y;
2136         tooltip->entry = strdup(entry);
2137         tooltip->tooltip_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
2138         if (tooltip->tooltip_fd < 0) {
2139                 fprintf(stderr, "could not create timerfd\n: %m");
2140                 return -1;
2141         }
2142
2143         tooltip->tooltip_task.run = tooltip_func;
2144         display_watch_fd(parent->window->display, tooltip->tooltip_fd,
2145                          EPOLLIN, &tooltip->tooltip_task);
2146         tooltip_timer_reset(tooltip);
2147
2148         return 0;
2149 }
2150
2151 static void
2152 workspace_manager_state(void *data,
2153                         struct workspace_manager *workspace_manager,
2154                         uint32_t current,
2155                         uint32_t count)
2156 {
2157         struct display *display = data;
2158
2159         display->workspace = current;
2160         display->workspace_count = count;
2161 }
2162
2163 static const struct workspace_manager_listener workspace_manager_listener = {
2164         workspace_manager_state
2165 };
2166
2167 static void
2168 frame_resize_handler(struct widget *widget,
2169                      int32_t width, int32_t height, void *data)
2170 {
2171         struct frame *frame = data;
2172         struct widget *child = frame->child;
2173         struct rectangle allocation;
2174         struct display *display = widget->window->display;
2175         struct surface *surface = widget->surface;
2176         struct frame_button * button;
2177         struct theme *t = display->theme;
2178         int x_l, x_r, y, w, h;
2179         int decoration_width, decoration_height;
2180         int opaque_margin, shadow_margin;
2181
2182         switch (widget->window->type) {
2183         case TYPE_FULLSCREEN:
2184                 decoration_width = 0;
2185                 decoration_height = 0;
2186
2187                 allocation.x = 0;
2188                 allocation.y = 0;
2189                 allocation.width = width;
2190                 allocation.height = height;
2191                 opaque_margin = 0;
2192
2193                 wl_list_for_each(button, &frame->buttons_list, link)
2194                         button->widget->opaque = 1;
2195                 break;
2196         case TYPE_MAXIMIZED:
2197                 decoration_width = t->width * 2;
2198                 decoration_height = t->width + t->titlebar_height;
2199
2200                 allocation.x = t->width;
2201                 allocation.y = t->titlebar_height;
2202                 allocation.width = width - decoration_width;
2203                 allocation.height = height - decoration_height;
2204
2205                 opaque_margin = 0;
2206
2207                 wl_list_for_each(button, &frame->buttons_list, link)
2208                         button->widget->opaque = 0;
2209                 break;
2210         default:
2211                 decoration_width = (t->width + t->margin) * 2;
2212                 decoration_height = t->width +
2213                         t->titlebar_height + t->margin * 2;
2214
2215                 allocation.x = t->width + t->margin;
2216                 allocation.y = t->titlebar_height + t->margin;
2217                 allocation.width = width - decoration_width;
2218                 allocation.height = height - decoration_height;
2219
2220                 opaque_margin = t->margin + t->frame_radius;
2221
2222                 wl_list_for_each(button, &frame->buttons_list, link)
2223                         button->widget->opaque = 0;
2224                 break;
2225         }
2226
2227         widget_set_allocation(child, allocation.x, allocation.y,
2228                               allocation.width, allocation.height);
2229
2230         if (child->resize_handler)
2231                 child->resize_handler(child,
2232                                       allocation.width,
2233                                       allocation.height,
2234                                       child->user_data);
2235
2236         width = child->allocation.width + decoration_width;
2237         height = child->allocation.height + decoration_height;
2238
2239         shadow_margin = widget->window->type == TYPE_MAXIMIZED ? 0 : t->margin;
2240
2241         surface->input_region =
2242                 wl_compositor_create_region(display->compositor);
2243         if (widget->window->type != TYPE_FULLSCREEN) {
2244                 wl_region_add(surface->input_region,
2245                               shadow_margin, shadow_margin,
2246                               width - 2 * shadow_margin,
2247                               height - 2 * shadow_margin);
2248         } else {
2249                 wl_region_add(surface->input_region, 0, 0, width, height);
2250         }
2251
2252         widget_set_allocation(widget, 0, 0, width, height);
2253
2254         if (child->opaque)
2255                 wl_region_add(surface->opaque_region,
2256                               opaque_margin, opaque_margin,
2257                               widget->allocation.width - 2 * opaque_margin,
2258                               widget->allocation.height - 2 * opaque_margin);
2259
2260         /* frame internal buttons */
2261         x_r = frame->widget->allocation.width - t->width - shadow_margin;
2262         x_l = t->width + shadow_margin;
2263         y = t->width + shadow_margin;
2264         wl_list_for_each(button, &frame->buttons_list, link) {
2265                 const int button_padding = 4;
2266                 w = cairo_image_surface_get_width(button->icon);
2267                 h = cairo_image_surface_get_height(button->icon);
2268
2269                 if (button->decoration == FRAME_BUTTON_FANCY)
2270                         w += 10;
2271
2272                 if (button->align == FRAME_BUTTON_LEFT) {
2273                         widget_set_allocation(button->widget,
2274                                               x_l, y , w + 1, h + 1);
2275                         x_l += w;
2276                         x_l += button_padding;
2277                 } else {
2278                         x_r -= w;
2279                         widget_set_allocation(button->widget,
2280                                               x_r, y , w + 1, h + 1);
2281                         x_r -= button_padding;
2282                 }
2283         }
2284 }
2285
2286 static int
2287 frame_button_enter_handler(struct widget *widget,
2288                            struct input *input, float x, float y, void *data)
2289 {
2290         struct frame_button *frame_button = data;
2291
2292         widget_schedule_redraw(frame_button->widget);
2293         frame_button->state = FRAME_BUTTON_OVER;
2294
2295         return CURSOR_LEFT_PTR;
2296 }
2297
2298 static void
2299 frame_button_leave_handler(struct widget *widget, struct input *input, void *data)
2300 {
2301         struct frame_button *frame_button = data;
2302
2303         widget_schedule_redraw(frame_button->widget);
2304         frame_button->state = FRAME_BUTTON_DEFAULT;
2305 }
2306
2307 static void
2308 frame_button_button_handler(struct widget *widget,
2309                             struct input *input, uint32_t time,
2310                             uint32_t button,
2311                             enum wl_pointer_button_state state, void *data)
2312 {
2313         struct frame_button *frame_button = data;
2314         struct window *window = widget->window;
2315         int was_pressed = (frame_button->state == FRAME_BUTTON_ACTIVE);
2316
2317         if (button != BTN_LEFT)
2318                 return;
2319
2320         switch (state) {
2321         case WL_POINTER_BUTTON_STATE_PRESSED:
2322                 frame_button->state = FRAME_BUTTON_ACTIVE;
2323                 widget_schedule_redraw(frame_button->widget);
2324
2325                 if (frame_button->type == FRAME_BUTTON_ICON)
2326                         window_show_frame_menu(window, input, time);
2327                 return;
2328         case WL_POINTER_BUTTON_STATE_RELEASED:
2329                 frame_button->state = FRAME_BUTTON_DEFAULT;
2330                 widget_schedule_redraw(frame_button->widget);
2331                 break;
2332         }
2333
2334         if (!was_pressed)
2335                 return;
2336
2337         switch (frame_button->type) {
2338         case FRAME_BUTTON_CLOSE:
2339                 if (window->close_handler)
2340                         window->close_handler(window->parent,
2341                                               window->user_data);
2342                 else
2343                         display_exit(window->display);
2344                 break;
2345         case FRAME_BUTTON_MINIMIZE:
2346                 fprintf(stderr,"Minimize stub\n");
2347                 break;
2348         case FRAME_BUTTON_MAXIMIZE:
2349                 window_set_maximized(window, window->type != TYPE_MAXIMIZED);
2350                 break;
2351         default:
2352                 /* Unknown operation */
2353                 break;
2354         }
2355 }
2356
2357 static void
2358 frame_button_touch_down_handler(struct widget *widget, struct input *input,
2359                                 uint32_t serial, uint32_t time, int32_t id,
2360                                 float x, float y, void *data)
2361 {
2362         struct frame_button *frame_button = data;
2363         struct window *window = widget->window;
2364
2365         switch (frame_button->type) {
2366         case FRAME_BUTTON_CLOSE:
2367                 if (window->close_handler)
2368                         window->close_handler(window->parent,
2369                                               window->user_data);
2370                 else
2371                         display_exit(window->display);
2372                 break;
2373         case FRAME_BUTTON_MINIMIZE:
2374                 fprintf(stderr,"Minimize stub\n");
2375                 break;
2376         case FRAME_BUTTON_MAXIMIZE:
2377                 window_set_maximized(window, window->type != TYPE_MAXIMIZED);
2378                 break;
2379         default:
2380                 /* Unknown operation */
2381                 break;
2382         }
2383 }
2384
2385
2386 static int
2387 frame_button_motion_handler(struct widget *widget,
2388                             struct input *input, uint32_t time,
2389                             float x, float y, void *data)
2390 {
2391         struct frame_button *frame_button = data;
2392         enum frame_button_pointer previous_button_state = frame_button->state;
2393
2394         /* only track state for a pressed button */
2395         if (input->grab != widget)
2396                 return CURSOR_LEFT_PTR;
2397
2398         if (x > widget->allocation.x &&
2399             x < (widget->allocation.x + widget->allocation.width) &&
2400             y > widget->allocation.y &&
2401             y < (widget->allocation.y + widget->allocation.height)) {
2402                 frame_button->state = FRAME_BUTTON_ACTIVE;
2403         } else {
2404                 frame_button->state = FRAME_BUTTON_DEFAULT;
2405         }
2406
2407         if (frame_button->state != previous_button_state)
2408                 widget_schedule_redraw(frame_button->widget);
2409
2410         return CURSOR_LEFT_PTR;
2411 }
2412
2413 static void
2414 frame_button_redraw_handler(struct widget *widget, void *data)
2415 {
2416         struct frame_button *frame_button = data;
2417         cairo_t *cr;
2418         int width, height, x, y;
2419
2420         x = widget->allocation.x;
2421         y = widget->allocation.y;
2422         width = widget->allocation.width;
2423         height = widget->allocation.height;
2424
2425         if (!width)
2426                 return;
2427         if (!height)
2428                 return;
2429         if (widget->opaque)
2430                 return;
2431
2432         cr = widget_cairo_create(widget);
2433
2434         if (frame_button->decoration == FRAME_BUTTON_FANCY) {
2435                 cairo_set_line_width(cr, 1);
2436
2437                 cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
2438                 cairo_rectangle (cr, x, y, 25, 16);
2439
2440                 cairo_stroke_preserve(cr);
2441
2442                 switch (frame_button->state) {
2443                 case FRAME_BUTTON_DEFAULT:
2444                         cairo_set_source_rgb(cr, 0.88, 0.88, 0.88);
2445                         break;
2446                 case FRAME_BUTTON_OVER:
2447                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
2448                         break;
2449                 case FRAME_BUTTON_ACTIVE:
2450                         cairo_set_source_rgb(cr, 0.7, 0.7, 0.7);
2451                         break;
2452                 }
2453
2454                 cairo_fill (cr);
2455
2456                 x += 4;
2457         }
2458
2459         cairo_set_source_surface(cr, frame_button->icon, x, y);
2460         cairo_paint(cr);
2461
2462         cairo_destroy(cr);
2463 }
2464
2465 static struct widget *
2466 frame_button_create(struct frame *frame, void *data, enum frame_button_action type,
2467         enum frame_button_align align, enum frame_button_decoration style)
2468 {
2469         struct frame_button *frame_button;
2470         const char *icon = data;
2471
2472         frame_button = xzalloc (sizeof *frame_button);
2473         frame_button->icon = cairo_image_surface_create_from_png(icon);
2474         frame_button->widget = widget_add_widget(frame->widget, frame_button);
2475         frame_button->frame = frame;
2476         frame_button->type = type;
2477         frame_button->align = align;
2478         frame_button->decoration = style;
2479
2480         wl_list_insert(frame->buttons_list.prev, &frame_button->link);
2481
2482         widget_set_redraw_handler(frame_button->widget, frame_button_redraw_handler);
2483         widget_set_enter_handler(frame_button->widget, frame_button_enter_handler);
2484         widget_set_leave_handler(frame_button->widget, frame_button_leave_handler);
2485         widget_set_touch_down_handler(frame_button->widget, frame_button_touch_down_handler);
2486         widget_set_button_handler(frame_button->widget, frame_button_button_handler);
2487         widget_set_motion_handler(frame_button->widget, frame_button_motion_handler);
2488         return frame_button->widget;
2489 }
2490
2491 static void
2492 frame_button_destroy(struct frame_button *frame_button)
2493 {
2494         widget_destroy(frame_button->widget);
2495         wl_list_remove(&frame_button->link);
2496         cairo_surface_destroy(frame_button->icon);
2497         free(frame_button);
2498
2499         return;
2500 }
2501
2502 static void
2503 frame_redraw_handler(struct widget *widget, void *data)
2504 {
2505         cairo_t *cr;
2506         struct window *window = widget->window;
2507         struct theme *t = window->display->theme;
2508         uint32_t flags = 0;
2509
2510         if (window->type == TYPE_FULLSCREEN)
2511                 return;
2512
2513         cr = widget_cairo_create(widget);
2514
2515         if (window->focus_count)
2516                 flags |= THEME_FRAME_ACTIVE;
2517         if (window->type == TYPE_MAXIMIZED)
2518                 flags |= THEME_FRAME_MAXIMIZED;
2519         theme_render_frame(t, cr, widget->allocation.width,
2520                            widget->allocation.height, window->title, flags);
2521
2522         cairo_destroy(cr);
2523 }
2524
2525 static int
2526 frame_get_pointer_image_for_location(struct frame *frame, struct input *input)
2527 {
2528         struct theme *t = frame->widget->window->display->theme;
2529         struct window *window = frame->widget->window;
2530         int location;
2531
2532         if (window->type != TYPE_TOPLEVEL)
2533                 return CURSOR_LEFT_PTR;
2534
2535         location = theme_get_location(t, input->sx, input->sy,
2536                                       frame->widget->allocation.width,
2537                                       frame->widget->allocation.height,
2538                                       window->type == TYPE_MAXIMIZED ?
2539                                       THEME_FRAME_MAXIMIZED : 0);
2540
2541         switch (location) {
2542         case THEME_LOCATION_RESIZING_TOP:
2543                 return CURSOR_TOP;
2544         case THEME_LOCATION_RESIZING_BOTTOM:
2545                 return CURSOR_BOTTOM;
2546         case THEME_LOCATION_RESIZING_LEFT:
2547                 return CURSOR_LEFT;
2548         case THEME_LOCATION_RESIZING_RIGHT:
2549                 return CURSOR_RIGHT;
2550         case THEME_LOCATION_RESIZING_TOP_LEFT:
2551                 return CURSOR_TOP_LEFT;
2552         case THEME_LOCATION_RESIZING_TOP_RIGHT:
2553                 return CURSOR_TOP_RIGHT;
2554         case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
2555                 return CURSOR_BOTTOM_LEFT;
2556         case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
2557                 return CURSOR_BOTTOM_RIGHT;
2558         case THEME_LOCATION_EXTERIOR:
2559         case THEME_LOCATION_TITLEBAR:
2560         default:
2561                 return CURSOR_LEFT_PTR;
2562         }
2563 }
2564
2565 static void
2566 frame_menu_func(struct window *window, int index, void *data)
2567 {
2568         struct display *display;
2569
2570         switch (index) {
2571         case 0: /* close */
2572                 if (window->close_handler)
2573                         window->close_handler(window->parent,
2574                                               window->user_data);
2575                 else
2576                         display_exit(window->display);
2577                 break;
2578         case 1: /* move to workspace above */
2579                 display = window->display;
2580                 if (display->workspace > 0)
2581                         workspace_manager_move_surface(
2582                                 display->workspace_manager,
2583                                 window->main_surface->surface,
2584                                 display->workspace - 1);
2585                 break;
2586         case 2: /* move to workspace below */
2587                 display = window->display;
2588                 if (display->workspace < display->workspace_count - 1)
2589                         workspace_manager_move_surface(
2590                                 display->workspace_manager,
2591                                 window->main_surface->surface,
2592                                 display->workspace + 1);
2593                 break;
2594         case 3: /* fullscreen */
2595                 /* we don't have a way to get out of fullscreen for now */
2596                 if (window->fullscreen_handler)
2597                         window->fullscreen_handler(window, window->user_data);
2598                 break;
2599         }
2600 }
2601
2602 void
2603 window_show_frame_menu(struct window *window,
2604                        struct input *input, uint32_t time)
2605 {
2606         int32_t x, y;
2607         int count;
2608
2609         static const char *entries[] = {
2610                 "Close",
2611                 "Move to workspace above", "Move to workspace below",
2612                 "Fullscreen"
2613         };
2614
2615         if (window->fullscreen_handler)
2616                 count = ARRAY_LENGTH(entries);
2617         else
2618                 count = ARRAY_LENGTH(entries) - 1;
2619
2620         input_get_position(input, &x, &y);
2621         window_show_menu(window->display, input, time, window,
2622                          x - 10, y - 10, frame_menu_func, entries, count);
2623 }
2624
2625 static int
2626 frame_enter_handler(struct widget *widget,
2627                     struct input *input, float x, float y, void *data)
2628 {
2629         return frame_get_pointer_image_for_location(data, input);
2630 }
2631
2632 static int
2633 frame_motion_handler(struct widget *widget,
2634                      struct input *input, uint32_t time,
2635                      float x, float y, void *data)
2636 {
2637         return frame_get_pointer_image_for_location(data, input);
2638 }
2639
2640 static void
2641 frame_button_handler(struct widget *widget,
2642                      struct input *input, uint32_t time,
2643                      uint32_t button, enum wl_pointer_button_state state,
2644                      void *data)
2645
2646 {
2647         struct frame *frame = data;
2648         struct window *window = widget->window;
2649         struct display *display = window->display;
2650         int location;
2651
2652         if (state != WL_POINTER_BUTTON_STATE_PRESSED)
2653                 return;
2654
2655         location = theme_get_location(display->theme, input->sx, input->sy,
2656                                       frame->widget->allocation.width,
2657                                       frame->widget->allocation.height,
2658                                       window->type == TYPE_MAXIMIZED ?
2659                                       THEME_FRAME_MAXIMIZED : 0);
2660
2661         if (window->display->shell && button == BTN_LEFT &&
2662             window->type == TYPE_TOPLEVEL) {
2663                 switch (location) {
2664                 case THEME_LOCATION_TITLEBAR:
2665                         if (!window->shell_surface)
2666                                 break;
2667                         input_ungrab(input);
2668                         wl_shell_surface_move(window->shell_surface,
2669                                               input_get_seat(input),
2670                                               display->serial);
2671                         break;
2672                 case THEME_LOCATION_RESIZING_TOP:
2673                 case THEME_LOCATION_RESIZING_BOTTOM:
2674                 case THEME_LOCATION_RESIZING_LEFT:
2675                 case THEME_LOCATION_RESIZING_RIGHT:
2676                 case THEME_LOCATION_RESIZING_TOP_LEFT:
2677                 case THEME_LOCATION_RESIZING_TOP_RIGHT:
2678                 case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
2679                 case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
2680                         if (!window->shell_surface)
2681                                 break;
2682                         input_ungrab(input);
2683
2684                         window->resizing = 1;
2685                         wl_shell_surface_resize(window->shell_surface,
2686                                                 input_get_seat(input),
2687                                                 display->serial, location);
2688                         break;
2689                 }
2690         } else if (button == BTN_RIGHT &&
2691                    (window->type == TYPE_TOPLEVEL ||
2692                     window->type == TYPE_MAXIMIZED)) {
2693                 window_show_frame_menu(window, input, time);
2694         }
2695 }
2696
2697 static void
2698 frame_touch_down_handler(struct widget *widget, struct input *input,
2699                          uint32_t serial, uint32_t time, int32_t id,
2700                          float x, float y, void *data)
2701 {
2702         struct window *window = widget->window;
2703         struct display *display = window->display;
2704
2705         wl_shell_surface_move(window->shell_surface,
2706                               input_get_seat(input),
2707                               display->serial);
2708 }
2709
2710 struct widget *
2711 frame_create(struct window *window, void *data)
2712 {
2713         struct frame *frame;
2714
2715         frame = xzalloc(sizeof *frame);
2716         frame->widget = window_add_widget(window, frame);
2717         frame->child = widget_add_widget(frame->widget, data);
2718
2719         widget_set_redraw_handler(frame->widget, frame_redraw_handler);
2720         widget_set_resize_handler(frame->widget, frame_resize_handler);
2721         widget_set_enter_handler(frame->widget, frame_enter_handler);
2722         widget_set_motion_handler(frame->widget, frame_motion_handler);
2723         widget_set_button_handler(frame->widget, frame_button_handler);
2724         widget_set_touch_down_handler(frame->widget, frame_touch_down_handler);
2725
2726         /* Create empty list for frame buttons */
2727         wl_list_init(&frame->buttons_list);
2728
2729         frame_button_create(frame, DATADIR "/weston/icon_window.png",
2730                 FRAME_BUTTON_ICON, FRAME_BUTTON_LEFT, FRAME_BUTTON_NONE);
2731
2732         frame_button_create(frame, DATADIR "/weston/sign_close.png",
2733                 FRAME_BUTTON_CLOSE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
2734
2735         frame_button_create(frame, DATADIR "/weston/sign_maximize.png",
2736                 FRAME_BUTTON_MAXIMIZE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
2737
2738         frame_button_create(frame, DATADIR "/weston/sign_minimize.png",
2739                 FRAME_BUTTON_MINIMIZE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
2740
2741         window->frame = frame;
2742
2743         return frame->child;
2744 }
2745
2746 void
2747 frame_set_child_size(struct widget *widget, int child_width, int child_height)
2748 {
2749         struct display *display = widget->window->display;
2750         struct theme *t = display->theme;
2751         int decoration_width, decoration_height;
2752         int width, height;
2753         int margin = widget->window->type == TYPE_MAXIMIZED ? 0 : t->margin;
2754
2755         if (widget->window->type != TYPE_FULLSCREEN) {
2756                 decoration_width = (t->width + margin) * 2;
2757                 decoration_height = t->width +
2758                         t->titlebar_height + margin * 2;
2759
2760                 width = child_width + decoration_width;
2761                 height = child_height + decoration_height;
2762         } else {
2763                 width = child_width;
2764                 height = child_height;
2765         }
2766
2767         window_schedule_resize(widget->window, width, height);
2768 }
2769
2770 static void
2771 frame_destroy(struct frame *frame)
2772 {
2773         struct frame_button *button, *tmp;
2774
2775         wl_list_for_each_safe(button, tmp, &frame->buttons_list, link)
2776                 frame_button_destroy(button);
2777
2778         /* frame->child must be destroyed by the application */
2779         widget_destroy(frame->widget);
2780         free(frame);
2781 }
2782
2783 static void
2784 input_set_focus_widget(struct input *input, struct widget *focus,
2785                        float x, float y)
2786 {
2787         struct widget *old, *widget;
2788         int cursor;
2789
2790         if (focus == input->focus_widget)
2791                 return;
2792
2793         old = input->focus_widget;
2794         if (old) {
2795                 widget = old;
2796                 if (input->grab)
2797                         widget = input->grab;
2798                 if (widget->leave_handler)
2799                         widget->leave_handler(old, input, widget->user_data);
2800                 input->focus_widget = NULL;
2801         }
2802
2803         if (focus) {
2804                 widget = focus;
2805                 if (input->grab)
2806                         widget = input->grab;
2807                 input->focus_widget = focus;
2808                 if (widget->enter_handler)
2809                         cursor = widget->enter_handler(focus, input, x, y,
2810                                                        widget->user_data);
2811                 else
2812                         cursor = widget->default_cursor;
2813
2814                 input_set_pointer_image(input, cursor);
2815         }
2816 }
2817
2818 void
2819 input_grab(struct input *input, struct widget *widget, uint32_t button)
2820 {
2821         input->grab = widget;
2822         input->grab_button = button;
2823 }
2824
2825 void
2826 input_ungrab(struct input *input)
2827 {
2828         struct widget *widget;
2829
2830         input->grab = NULL;
2831         if (input->pointer_focus) {
2832                 widget = window_find_widget(input->pointer_focus,
2833                                             input->sx, input->sy);
2834                 input_set_focus_widget(input, widget, input->sx, input->sy);
2835         }
2836 }
2837
2838 static void
2839 input_remove_pointer_focus(struct input *input)
2840 {
2841         struct window *window = input->pointer_focus;
2842
2843         if (!window)
2844                 return;
2845
2846         input_set_focus_widget(input, NULL, 0, 0);
2847
2848         input->pointer_focus = NULL;
2849         input->current_cursor = CURSOR_UNSET;
2850 }
2851
2852 static void
2853 pointer_handle_enter(void *data, struct wl_pointer *pointer,
2854                      uint32_t serial, struct wl_surface *surface,
2855                      wl_fixed_t sx_w, wl_fixed_t sy_w)
2856 {
2857         struct input *input = data;
2858         struct window *window;
2859         struct widget *widget;
2860         float sx = wl_fixed_to_double(sx_w);
2861         float sy = wl_fixed_to_double(sy_w);
2862
2863         if (!surface) {
2864                 /* enter event for a window we've just destroyed */
2865                 return;
2866         }
2867
2868         input->display->serial = serial;
2869         input->pointer_enter_serial = serial;
2870         input->pointer_focus = wl_surface_get_user_data(surface);
2871         window = input->pointer_focus;
2872
2873         if (window->resizing) {
2874                 window->resizing = 0;
2875                 /* Schedule a redraw to free the pool */
2876                 window_schedule_redraw(window);
2877         }
2878
2879         input->sx = sx;
2880         input->sy = sy;
2881
2882         widget = window_find_widget(window, sx, sy);
2883         input_set_focus_widget(input, widget, sx, sy);
2884 }
2885
2886 static void
2887 pointer_handle_leave(void *data, struct wl_pointer *pointer,
2888                      uint32_t serial, struct wl_surface *surface)
2889 {
2890         struct input *input = data;
2891
2892         input->display->serial = serial;
2893         input_remove_pointer_focus(input);
2894 }
2895
2896 static void
2897 pointer_handle_motion(void *data, struct wl_pointer *pointer,
2898                       uint32_t time, wl_fixed_t sx_w, wl_fixed_t sy_w)
2899 {
2900         struct input *input = data;
2901         struct window *window = input->pointer_focus;
2902         struct widget *widget;
2903         int cursor;
2904         float sx = wl_fixed_to_double(sx_w);
2905         float sy = wl_fixed_to_double(sy_w);
2906
2907         input->sx = sx;
2908         input->sy = sy;
2909
2910         if (!window)
2911                 return;
2912
2913         /* when making the window smaller - e.g. after a unmaximise we might
2914          * still have a pending motion event that the compositor has picked
2915          * based on the old surface dimensions
2916          */
2917         if (sx > window->main_surface->allocation.width ||
2918             sy > window->main_surface->allocation.height)
2919                 return;
2920
2921         if (!(input->grab && input->grab_button)) {
2922                 widget = window_find_widget(window, sx, sy);
2923                 input_set_focus_widget(input, widget, sx, sy);
2924         }
2925
2926         if (input->grab)
2927                 widget = input->grab;
2928         else
2929                 widget = input->focus_widget;
2930         if (widget) {
2931                 if (widget->motion_handler)
2932                         cursor = widget->motion_handler(input->focus_widget,
2933                                                         input, time, sx, sy,
2934                                                         widget->user_data);
2935                 else
2936                         cursor = widget->default_cursor;
2937         } else
2938                 cursor = CURSOR_LEFT_PTR;
2939
2940         input_set_pointer_image(input, cursor);
2941 }
2942
2943 static void
2944 pointer_handle_button(void *data, struct wl_pointer *pointer, uint32_t serial,
2945                       uint32_t time, uint32_t button, uint32_t state_w)
2946 {
2947         struct input *input = data;
2948         struct widget *widget;
2949         enum wl_pointer_button_state state = state_w;
2950
2951         input->display->serial = serial;
2952         if (input->focus_widget && input->grab == NULL &&
2953             state == WL_POINTER_BUTTON_STATE_PRESSED)
2954                 input_grab(input, input->focus_widget, button);
2955
2956         widget = input->grab;
2957         if (widget && widget->button_handler)
2958                 (*widget->button_handler)(widget,
2959                                           input, time,
2960                                           button, state,
2961                                           input->grab->user_data);
2962
2963         if (input->grab && input->grab_button == button &&
2964             state == WL_POINTER_BUTTON_STATE_RELEASED)
2965                 input_ungrab(input);
2966 }
2967
2968 static void
2969 pointer_handle_axis(void *data, struct wl_pointer *pointer,
2970                     uint32_t time, uint32_t axis, wl_fixed_t value)
2971 {
2972         struct input *input = data;
2973         struct widget *widget;
2974
2975         widget = input->focus_widget;
2976         if (input->grab)
2977                 widget = input->grab;
2978         if (widget && widget->axis_handler)
2979                 (*widget->axis_handler)(widget,
2980                                         input, time,
2981                                         axis, value,
2982                                         widget->user_data);
2983 }
2984
2985 static const struct wl_pointer_listener pointer_listener = {
2986         pointer_handle_enter,
2987         pointer_handle_leave,
2988         pointer_handle_motion,
2989         pointer_handle_button,
2990         pointer_handle_axis,
2991 };
2992
2993 static void
2994 input_remove_keyboard_focus(struct input *input)
2995 {
2996         struct window *window = input->keyboard_focus;
2997         struct itimerspec its;
2998
2999         its.it_interval.tv_sec = 0;
3000         its.it_interval.tv_nsec = 0;
3001         its.it_value.tv_sec = 0;
3002         its.it_value.tv_nsec = 0;
3003         timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
3004
3005         if (!window)
3006                 return;
3007
3008         window->focus_count--;
3009         if (window->keyboard_focus_handler)
3010                 (*window->keyboard_focus_handler)(window, NULL,
3011                                                   window->user_data);
3012
3013         input->keyboard_focus = NULL;
3014 }
3015
3016 static void
3017 keyboard_repeat_func(struct task *task, uint32_t events)
3018 {
3019         struct input *input =
3020                 container_of(task, struct input, repeat_task);
3021         struct window *window = input->keyboard_focus;
3022         uint64_t exp;
3023
3024         if (read(input->repeat_timer_fd, &exp, sizeof exp) != sizeof exp)
3025                 /* If we change the timer between the fd becoming
3026                  * readable and getting here, there'll be nothing to
3027                  * read and we get EAGAIN. */
3028                 return;
3029
3030         if (window && window->key_handler) {
3031                 (*window->key_handler)(window, input, input->repeat_time,
3032                                        input->repeat_key, input->repeat_sym,
3033                                        WL_KEYBOARD_KEY_STATE_PRESSED,
3034                                        window->user_data);
3035         }
3036 }
3037
3038 static void
3039 keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
3040                        uint32_t format, int fd, uint32_t size)
3041 {
3042         struct input *input = data;
3043         char *map_str;
3044
3045         if (!data) {
3046                 close(fd);
3047                 return;
3048         }
3049
3050         if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
3051                 close(fd);
3052                 return;
3053         }
3054
3055         map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
3056         if (map_str == MAP_FAILED) {
3057                 close(fd);
3058                 return;
3059         }
3060
3061         input->xkb.keymap = xkb_map_new_from_string(input->display->xkb_context,
3062                                                     map_str,
3063                                                     XKB_KEYMAP_FORMAT_TEXT_V1,
3064                                                     0);
3065         munmap(map_str, size);
3066         close(fd);
3067
3068         if (!input->xkb.keymap) {
3069                 fprintf(stderr, "failed to compile keymap\n");
3070                 return;
3071         }
3072
3073         input->xkb.state = xkb_state_new(input->xkb.keymap);
3074         if (!input->xkb.state) {
3075                 fprintf(stderr, "failed to create XKB state\n");
3076                 xkb_map_unref(input->xkb.keymap);
3077                 input->xkb.keymap = NULL;
3078                 return;
3079         }
3080
3081         input->xkb.control_mask =
3082                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Control");
3083         input->xkb.alt_mask =
3084                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Mod1");
3085         input->xkb.shift_mask =
3086                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Shift");
3087 }
3088
3089 static void
3090 keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
3091                       uint32_t serial, struct wl_surface *surface,
3092                       struct wl_array *keys)
3093 {
3094         struct input *input = data;
3095         struct window *window;
3096
3097         input->display->serial = serial;
3098         input->keyboard_focus = wl_surface_get_user_data(surface);
3099
3100         window = input->keyboard_focus;
3101         window->focus_count++;
3102         if (window->keyboard_focus_handler)
3103                 (*window->keyboard_focus_handler)(window,
3104                                                   input, window->user_data);
3105 }
3106
3107 static void
3108 keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,
3109                       uint32_t serial, struct wl_surface *surface)
3110 {
3111         struct input *input = data;
3112
3113         input->display->serial = serial;
3114         input_remove_keyboard_focus(input);
3115 }
3116
3117 static void
3118 keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
3119                     uint32_t serial, uint32_t time, uint32_t key,
3120                     uint32_t state_w)
3121 {
3122         struct input *input = data;
3123         struct window *window = input->keyboard_focus;
3124         uint32_t code, num_syms;
3125         enum wl_keyboard_key_state state = state_w;
3126         const xkb_keysym_t *syms;
3127         xkb_keysym_t sym;
3128         struct itimerspec its;
3129
3130         input->display->serial = serial;
3131         code = key + 8;
3132         if (!window || !input->xkb.state)
3133                 return;
3134
3135         num_syms = xkb_key_get_syms(input->xkb.state, code, &syms);
3136
3137         sym = XKB_KEY_NoSymbol;
3138         if (num_syms == 1)
3139                 sym = syms[0];
3140
3141         if (sym == XKB_KEY_F5 && input->modifiers == MOD_ALT_MASK) {
3142                 if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
3143                         window_set_maximized(window,
3144                                              window->type != TYPE_MAXIMIZED);
3145         } else if (sym == XKB_KEY_F11 &&
3146                    window->fullscreen_handler &&
3147                    state == WL_KEYBOARD_KEY_STATE_PRESSED) {
3148                 window->fullscreen_handler(window, window->user_data);
3149         } else if (sym == XKB_KEY_F4 &&
3150                    input->modifiers == MOD_ALT_MASK &&
3151                    state == WL_KEYBOARD_KEY_STATE_PRESSED) {
3152                 if (window->close_handler)
3153                         window->close_handler(window->parent,
3154                                               window->user_data);
3155                 else
3156                         display_exit(window->display);
3157         } else if (window->key_handler) {
3158                 (*window->key_handler)(window, input, time, key,
3159                                        sym, state, window->user_data);
3160         }
3161
3162         if (state == WL_KEYBOARD_KEY_STATE_RELEASED &&
3163             key == input->repeat_key) {
3164                 its.it_interval.tv_sec = 0;
3165                 its.it_interval.tv_nsec = 0;
3166                 its.it_value.tv_sec = 0;
3167                 its.it_value.tv_nsec = 0;
3168                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
3169         } else if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
3170                 input->repeat_sym = sym;
3171                 input->repeat_key = key;
3172                 input->repeat_time = time;
3173                 its.it_interval.tv_sec = 0;
3174                 its.it_interval.tv_nsec = 25 * 1000 * 1000;
3175                 its.it_value.tv_sec = 0;
3176                 its.it_value.tv_nsec = 400 * 1000 * 1000;
3177                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
3178         }
3179 }
3180
3181 static void
3182 keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
3183                           uint32_t serial, uint32_t mods_depressed,
3184                           uint32_t mods_latched, uint32_t mods_locked,
3185                           uint32_t group)
3186 {
3187         struct input *input = data;
3188         xkb_mod_mask_t mask;
3189
3190         /* If we're not using a keymap, then we don't handle PC-style modifiers */
3191         if (!input->xkb.keymap)
3192                 return;
3193
3194         xkb_state_update_mask(input->xkb.state, mods_depressed, mods_latched,
3195                               mods_locked, 0, 0, group);
3196         mask = xkb_state_serialize_mods(input->xkb.state,
3197                                         XKB_STATE_DEPRESSED |
3198                                         XKB_STATE_LATCHED);
3199         input->modifiers = 0;
3200         if (mask & input->xkb.control_mask)
3201                 input->modifiers |= MOD_CONTROL_MASK;
3202         if (mask & input->xkb.alt_mask)
3203                 input->modifiers |= MOD_ALT_MASK;
3204         if (mask & input->xkb.shift_mask)
3205                 input->modifiers |= MOD_SHIFT_MASK;
3206 }
3207
3208 static const struct wl_keyboard_listener keyboard_listener = {
3209         keyboard_handle_keymap,
3210         keyboard_handle_enter,
3211         keyboard_handle_leave,
3212         keyboard_handle_key,
3213         keyboard_handle_modifiers,
3214 };
3215
3216 static void
3217 touch_handle_down(void *data, struct wl_touch *wl_touch,
3218                   uint32_t serial, uint32_t time, struct wl_surface *surface,
3219                   int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
3220 {
3221         struct input *input = data;
3222         struct widget *widget;
3223         float sx = wl_fixed_to_double(x_w);
3224         float sy = wl_fixed_to_double(y_w);
3225
3226         input->display->serial = serial;
3227         input->touch_focus = wl_surface_get_user_data(surface);
3228         if (!input->touch_focus) {
3229                 DBG("Failed to find to touch focus for surface %p\n", surface);
3230                 return;
3231         }
3232
3233         widget = window_find_widget(input->touch_focus,
3234                                     wl_fixed_to_double(x_w),
3235                                     wl_fixed_to_double(y_w));
3236         if (widget) {
3237                 struct touch_point *tp = xmalloc(sizeof *tp);
3238                 if (tp) {
3239                         tp->id = id;
3240                         tp->widget = widget;
3241                         wl_list_insert(&input->touch_point_list, &tp->link);
3242
3243                         if (widget->touch_down_handler)
3244                                 (*widget->touch_down_handler)(widget, input,
3245                                                               serial, time, id,
3246                                                               sx, sy,
3247                                                               widget->user_data);
3248                 }
3249         }
3250 }
3251
3252 static void
3253 touch_handle_up(void *data, struct wl_touch *wl_touch,
3254                 uint32_t serial, uint32_t time, int32_t id)
3255 {
3256         struct input *input = data;
3257         struct touch_point *tp, *tmp;
3258
3259         if (!input->touch_focus) {
3260                 DBG("No touch focus found for touch up event!\n");
3261                 return;
3262         }
3263
3264         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3265                 if (tp->id != id)
3266                         continue;
3267
3268                 if (tp->widget->touch_up_handler)
3269                         (*tp->widget->touch_up_handler)(tp->widget, input, serial,
3270                                                         time, id,
3271                                                         tp->widget->user_data);
3272
3273                 wl_list_remove(&tp->link);
3274                 free(tp);
3275
3276                 return;
3277         }
3278 }
3279
3280 static void
3281 touch_handle_motion(void *data, struct wl_touch *wl_touch,
3282                     uint32_t time, int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
3283 {
3284         struct input *input = data;
3285         struct touch_point *tp;
3286         float sx = wl_fixed_to_double(x_w);
3287         float sy = wl_fixed_to_double(y_w);
3288
3289         DBG("touch_handle_motion: %i %i\n", id, wl_list_length(&input->touch_point_list));
3290
3291         if (!input->touch_focus) {
3292                 DBG("No touch focus found for touch motion event!\n");
3293                 return;
3294         }
3295
3296         wl_list_for_each(tp, &input->touch_point_list, link) {
3297                 if (tp->id != id)
3298                         continue;
3299
3300                 if (tp->widget->touch_motion_handler)
3301                         (*tp->widget->touch_motion_handler)(tp->widget, input, time,
3302                                                             id, sx, sy,
3303                                                             tp->widget->user_data);
3304                 return;
3305         }
3306 }
3307
3308 static void
3309 touch_handle_frame(void *data, struct wl_touch *wl_touch)
3310 {
3311         struct input *input = data;
3312         struct touch_point *tp, *tmp;
3313
3314         DBG("touch_handle_frame\n");
3315
3316         if (!input->touch_focus) {
3317                 DBG("No touch focus found for touch frame event!\n");
3318                 return;
3319         }
3320
3321         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3322                 if (tp->widget->touch_frame_handler)
3323                         (*tp->widget->touch_frame_handler)(tp->widget, input,
3324                                                            tp->widget->user_data);
3325
3326                 wl_list_remove(&tp->link);
3327                 free(tp);
3328         }
3329 }
3330
3331 static void
3332 touch_handle_cancel(void *data, struct wl_touch *wl_touch)
3333 {
3334         struct input *input = data;
3335         struct touch_point *tp, *tmp;
3336
3337         DBG("touch_handle_cancel\n");
3338
3339         if (!input->touch_focus) {
3340                 DBG("No touch focus found for touch cancel event!\n");
3341                 return;
3342         }
3343
3344         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3345                 if (tp->widget->touch_cancel_handler)
3346                         (*tp->widget->touch_cancel_handler)(tp->widget, input,
3347                                                             tp->widget->user_data);
3348
3349                 wl_list_remove(&tp->link);
3350                 free(tp);
3351         }
3352 }
3353
3354 static const struct wl_touch_listener touch_listener = {
3355         touch_handle_down,
3356         touch_handle_up,
3357         touch_handle_motion,
3358         touch_handle_frame,
3359         touch_handle_cancel,
3360 };
3361
3362 static void
3363 seat_handle_capabilities(void *data, struct wl_seat *seat,
3364                          enum wl_seat_capability caps)
3365 {
3366         struct input *input = data;
3367
3368         if ((caps & WL_SEAT_CAPABILITY_POINTER) && !input->pointer) {
3369                 input->pointer = wl_seat_get_pointer(seat);
3370                 wl_pointer_set_user_data(input->pointer, input);
3371                 wl_pointer_add_listener(input->pointer, &pointer_listener,
3372                                         input);
3373         } else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && input->pointer) {
3374                 wl_pointer_destroy(input->pointer);
3375                 input->pointer = NULL;
3376         }
3377
3378         if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
3379                 input->keyboard = wl_seat_get_keyboard(seat);
3380                 wl_keyboard_set_user_data(input->keyboard, input);
3381                 wl_keyboard_add_listener(input->keyboard, &keyboard_listener,
3382                                          input);
3383         } else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) {
3384                 wl_keyboard_destroy(input->keyboard);
3385                 input->keyboard = NULL;
3386         }
3387
3388         if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !input->touch) {
3389                 input->touch = wl_seat_get_touch(seat);
3390                 wl_touch_set_user_data(input->touch, input);
3391                 wl_touch_add_listener(input->touch, &touch_listener, input);
3392         } else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && input->touch) {
3393                 wl_touch_destroy(input->touch);
3394                 input->touch = NULL;
3395         }
3396 }
3397
3398 static const struct wl_seat_listener seat_listener = {
3399         seat_handle_capabilities,
3400 };
3401
3402 void
3403 input_get_position(struct input *input, int32_t *x, int32_t *y)
3404 {
3405         *x = input->sx;
3406         *y = input->sy;
3407 }
3408
3409 struct display *
3410 input_get_display(struct input *input)
3411 {
3412         return input->display;
3413 }
3414
3415 struct wl_seat *
3416 input_get_seat(struct input *input)
3417 {
3418         return input->seat;
3419 }
3420
3421 uint32_t
3422 input_get_modifiers(struct input *input)
3423 {
3424         return input->modifiers;
3425 }
3426
3427 struct widget *
3428 input_get_focus_widget(struct input *input)
3429 {
3430         return input->focus_widget;
3431 }
3432
3433 struct data_offer {
3434         struct wl_data_offer *offer;
3435         struct input *input;
3436         struct wl_array types;
3437         int refcount;
3438
3439         struct task io_task;
3440         int fd;
3441         data_func_t func;
3442         int32_t x, y;
3443         void *user_data;
3444 };
3445
3446 static void
3447 data_offer_offer(void *data, struct wl_data_offer *wl_data_offer, const char *type)
3448 {
3449         struct data_offer *offer = data;
3450         char **p;
3451
3452         p = wl_array_add(&offer->types, sizeof *p);
3453         *p = strdup(type);
3454 }
3455
3456 static const struct wl_data_offer_listener data_offer_listener = {
3457         data_offer_offer,
3458 };
3459
3460 static void
3461 data_offer_destroy(struct data_offer *offer)
3462 {
3463         char **p;
3464
3465         offer->refcount--;
3466         if (offer->refcount == 0) {
3467                 wl_data_offer_destroy(offer->offer);
3468                 for (p = offer->types.data; *p; p++)
3469                         free(*p);
3470                 wl_array_release(&offer->types);
3471                 free(offer);
3472         }
3473 }
3474
3475 static void
3476 data_device_data_offer(void *data,
3477                        struct wl_data_device *data_device,
3478                        struct wl_data_offer *_offer)
3479 {
3480         struct data_offer *offer;
3481
3482         offer = xmalloc(sizeof *offer);
3483
3484         wl_array_init(&offer->types);
3485         offer->refcount = 1;
3486         offer->input = data;
3487         offer->offer = _offer;
3488         wl_data_offer_add_listener(offer->offer,
3489                                    &data_offer_listener, offer);
3490 }
3491
3492 static void
3493 data_device_enter(void *data, struct wl_data_device *data_device,
3494                   uint32_t serial, struct wl_surface *surface,
3495                   wl_fixed_t x_w, wl_fixed_t y_w,
3496                   struct wl_data_offer *offer)
3497 {
3498         struct input *input = data;
3499         struct window *window;
3500         void *types_data;
3501         float x = wl_fixed_to_double(x_w);
3502         float y = wl_fixed_to_double(y_w);
3503         char **p;
3504
3505         input->pointer_enter_serial = serial;
3506         window = wl_surface_get_user_data(surface);
3507         input->pointer_focus = window;
3508
3509         if (offer) {
3510                 input->drag_offer = wl_data_offer_get_user_data(offer);
3511
3512                 p = wl_array_add(&input->drag_offer->types, sizeof *p);
3513                 *p = NULL;
3514
3515                 types_data = input->drag_offer->types.data;
3516         } else {
3517                 input->drag_offer = NULL;
3518                 types_data = NULL;
3519         }
3520
3521         window = input->pointer_focus;
3522         if (window->data_handler)
3523                 window->data_handler(window, input, x, y, types_data,
3524                                      window->user_data);
3525 }
3526
3527 static void
3528 data_device_leave(void *data, struct wl_data_device *data_device)
3529 {
3530         struct input *input = data;
3531
3532         if (input->drag_offer) {
3533                 data_offer_destroy(input->drag_offer);
3534                 input->drag_offer = NULL;
3535         }
3536 }
3537
3538 static void
3539 data_device_motion(void *data, struct wl_data_device *data_device,
3540                    uint32_t time, wl_fixed_t x_w, wl_fixed_t y_w)
3541 {
3542         struct input *input = data;
3543         struct window *window = input->pointer_focus;
3544         float x = wl_fixed_to_double(x_w);
3545         float y = wl_fixed_to_double(y_w);
3546         void *types_data;
3547
3548         input->sx = x;
3549         input->sy = y;
3550
3551         if (input->drag_offer)
3552                 types_data = input->drag_offer->types.data;
3553         else
3554                 types_data = NULL;
3555
3556         if (window->data_handler)
3557                 window->data_handler(window, input, x, y, types_data,
3558                                      window->user_data);
3559 }
3560
3561 static void
3562 data_device_drop(void *data, struct wl_data_device *data_device)
3563 {
3564         struct input *input = data;
3565         struct window *window = input->pointer_focus;
3566
3567         if (window->drop_handler)
3568                 window->drop_handler(window, input,
3569                                      input->sx, input->sy, window->user_data);
3570 }
3571
3572 static void
3573 data_device_selection(void *data,
3574                       struct wl_data_device *wl_data_device,
3575                       struct wl_data_offer *offer)
3576 {
3577         struct input *input = data;
3578         char **p;
3579
3580         if (input->selection_offer)
3581                 data_offer_destroy(input->selection_offer);
3582
3583         if (offer) {
3584                 input->selection_offer = wl_data_offer_get_user_data(offer);
3585                 p = wl_array_add(&input->selection_offer->types, sizeof *p);
3586                 *p = NULL;
3587         } else {
3588                 input->selection_offer = NULL;
3589         }
3590 }
3591
3592 static const struct wl_data_device_listener data_device_listener = {
3593         data_device_data_offer,
3594         data_device_enter,
3595         data_device_leave,
3596         data_device_motion,
3597         data_device_drop,
3598         data_device_selection
3599 };
3600
3601 static void
3602 input_set_pointer_image_index(struct input *input, int index)
3603 {
3604         struct wl_buffer *buffer;
3605         struct wl_cursor *cursor;
3606         struct wl_cursor_image *image;
3607
3608         if (!input->pointer)
3609                 return;
3610
3611         cursor = input->display->cursors[input->current_cursor];
3612         if (!cursor)
3613                 return;
3614
3615         if (index >= (int) cursor->image_count) {
3616                 fprintf(stderr, "cursor index out of range\n");
3617                 return;
3618         }
3619
3620         image = cursor->images[index];
3621         buffer = wl_cursor_image_get_buffer(image);
3622         if (!buffer)
3623                 return;
3624
3625         wl_pointer_set_cursor(input->pointer, input->pointer_enter_serial,
3626                               input->pointer_surface,
3627                               image->hotspot_x, image->hotspot_y);
3628         wl_surface_attach(input->pointer_surface, buffer, 0, 0);
3629         wl_surface_damage(input->pointer_surface, 0, 0,
3630                           image->width, image->height);
3631         wl_surface_commit(input->pointer_surface);
3632 }
3633
3634 static const struct wl_callback_listener pointer_surface_listener;
3635
3636 static void
3637 pointer_surface_frame_callback(void *data, struct wl_callback *callback,
3638                                uint32_t time)
3639 {
3640         struct input *input = data;
3641         struct wl_cursor *cursor;
3642         int i;
3643
3644         if (callback) {
3645                 assert(callback == input->cursor_frame_cb);
3646                 wl_callback_destroy(callback);
3647                 input->cursor_frame_cb = NULL;
3648         }
3649
3650         if (!input->pointer)
3651                 return;
3652
3653         if (input->current_cursor == CURSOR_BLANK) {
3654                 wl_pointer_set_cursor(input->pointer,
3655                                       input->pointer_enter_serial,
3656                                       NULL, 0, 0);
3657                 return;
3658         }
3659
3660         if (input->current_cursor == CURSOR_UNSET)
3661                 return;
3662         cursor = input->display->cursors[input->current_cursor];
3663         if (!cursor)
3664                 return;
3665
3666         /* FIXME We don't have the current time on the first call so we set
3667          * the animation start to the time of the first frame callback. */
3668         if (time == 0)
3669                 input->cursor_anim_start = 0;
3670         else if (input->cursor_anim_start == 0)
3671                 input->cursor_anim_start = time;
3672
3673         if (time == 0 || input->cursor_anim_start == 0)
3674                 i = 0;
3675         else
3676                 i = wl_cursor_frame(cursor, time - input->cursor_anim_start);
3677
3678         if (cursor->image_count > 1) {
3679                 input->cursor_frame_cb =
3680                         wl_surface_frame(input->pointer_surface);
3681                 wl_callback_add_listener(input->cursor_frame_cb,
3682                                          &pointer_surface_listener, input);
3683         }
3684
3685         input_set_pointer_image_index(input, i);
3686 }
3687
3688 static const struct wl_callback_listener pointer_surface_listener = {
3689         pointer_surface_frame_callback
3690 };
3691
3692 void
3693 input_set_pointer_image(struct input *input, int pointer)
3694 {
3695         int force = 0;
3696
3697         if (!input->pointer)
3698                 return;
3699
3700         if (input->pointer_enter_serial > input->cursor_serial)
3701                 force = 1;
3702
3703         if (!force && pointer == input->current_cursor)
3704                 return;
3705
3706         input->current_cursor = pointer;
3707         input->cursor_serial = input->pointer_enter_serial;
3708         if (!input->cursor_frame_cb)
3709                 pointer_surface_frame_callback(input, NULL, 0);
3710         else if (force) {
3711                 /* The current frame callback may be stuck if, for instance,
3712                  * the set cursor request was processed by the server after
3713                  * this client lost the focus. In this case the cursor surface
3714                  * might not be mapped and the frame callback wouldn't ever
3715                  * complete. Send a set_cursor and attach to try to map the
3716                  * cursor surface again so that the callback will finish */
3717                 input_set_pointer_image_index(input, 0);
3718         }
3719 }
3720
3721 struct wl_data_device *
3722 input_get_data_device(struct input *input)
3723 {
3724         return input->data_device;
3725 }
3726
3727 void
3728 input_set_selection(struct input *input,
3729                     struct wl_data_source *source, uint32_t time)
3730 {
3731         wl_data_device_set_selection(input->data_device, source, time);
3732 }
3733
3734 void
3735 input_accept(struct input *input, const char *type)
3736 {
3737         wl_data_offer_accept(input->drag_offer->offer,
3738                              input->pointer_enter_serial, type);
3739 }
3740
3741 static void
3742 offer_io_func(struct task *task, uint32_t events)
3743 {
3744         struct data_offer *offer =
3745                 container_of(task, struct data_offer, io_task);
3746         unsigned int len;
3747         char buffer[4096];
3748
3749         len = read(offer->fd, buffer, sizeof buffer);
3750         offer->func(buffer, len,
3751                     offer->x, offer->y, offer->user_data);
3752
3753         if (len == 0) {
3754                 close(offer->fd);
3755                 data_offer_destroy(offer);
3756         }
3757 }
3758
3759 static void
3760 data_offer_receive_data(struct data_offer *offer, const char *mime_type,
3761                         data_func_t func, void *user_data)
3762 {
3763         int p[2];
3764
3765         if (pipe2(p, O_CLOEXEC) == -1)
3766                 return;
3767
3768         wl_data_offer_receive(offer->offer, mime_type, p[1]);
3769         close(p[1]);
3770
3771         offer->io_task.run = offer_io_func;
3772         offer->fd = p[0];
3773         offer->func = func;
3774         offer->refcount++;
3775         offer->user_data = user_data;
3776
3777         display_watch_fd(offer->input->display,
3778                          offer->fd, EPOLLIN, &offer->io_task);
3779 }
3780
3781 void
3782 input_receive_drag_data(struct input *input, const char *mime_type,
3783                         data_func_t func, void *data)
3784 {
3785         data_offer_receive_data(input->drag_offer, mime_type, func, data);
3786         input->drag_offer->x = input->sx;
3787         input->drag_offer->y = input->sy;
3788 }
3789
3790 int
3791 input_receive_selection_data(struct input *input, const char *mime_type,
3792                              data_func_t func, void *data)
3793 {
3794         char **p;
3795
3796         if (input->selection_offer == NULL)
3797                 return -1;
3798
3799         for (p = input->selection_offer->types.data; *p; p++)
3800                 if (strcmp(mime_type, *p) == 0)
3801                         break;
3802
3803         if (*p == NULL)
3804                 return -1;
3805
3806         data_offer_receive_data(input->selection_offer,
3807                                 mime_type, func, data);
3808         return 0;
3809 }
3810
3811 int
3812 input_receive_selection_data_to_fd(struct input *input,
3813                                    const char *mime_type, int fd)
3814 {
3815         if (input->selection_offer)
3816                 wl_data_offer_receive(input->selection_offer->offer,
3817                                       mime_type, fd);
3818
3819         return 0;
3820 }
3821
3822 void
3823 window_move(struct window *window, struct input *input, uint32_t serial)
3824 {
3825         if (!window->shell_surface)
3826                 return;
3827
3828         wl_shell_surface_move(window->shell_surface, input->seat, serial);
3829 }
3830
3831 void
3832 window_touch_move(struct window *window, struct input *input, uint32_t serial)
3833 {
3834         if (!window->shell_surface)
3835                 return;
3836
3837         wl_shell_surface_move(window->shell_surface, input->seat,
3838                               window->display->serial);
3839 }
3840
3841 static void
3842 surface_set_synchronized(struct surface *surface)
3843 {
3844         if (!surface->subsurface)
3845                 return;
3846
3847         if (surface->synchronized)
3848                 return;
3849
3850         wl_subsurface_set_sync(surface->subsurface);
3851         surface->synchronized = 1;
3852 }
3853
3854 static void
3855 surface_set_synchronized_default(struct surface *surface)
3856 {
3857         if (!surface->subsurface)
3858                 return;
3859
3860         if (surface->synchronized == surface->synchronized_default)
3861                 return;
3862
3863         if (surface->synchronized_default)
3864                 wl_subsurface_set_sync(surface->subsurface);
3865         else
3866                 wl_subsurface_set_desync(surface->subsurface);
3867
3868         surface->synchronized = surface->synchronized_default;
3869 }
3870
3871 static void
3872 surface_resize(struct surface *surface)
3873 {
3874         struct widget *widget = surface->widget;
3875         struct wl_compositor *compositor = widget->window->display->compositor;
3876
3877         if (surface->input_region) {
3878                 wl_region_destroy(surface->input_region);
3879                 surface->input_region = NULL;
3880         }
3881
3882         if (surface->opaque_region)
3883                 wl_region_destroy(surface->opaque_region);
3884
3885         surface->opaque_region = wl_compositor_create_region(compositor);
3886
3887         if (widget->resize_handler)
3888                 widget->resize_handler(widget,
3889                                        widget->allocation.width,
3890                                        widget->allocation.height,
3891                                        widget->user_data);
3892
3893         if (surface->subsurface &&
3894             (surface->allocation.x != widget->allocation.x ||
3895              surface->allocation.y != widget->allocation.y)) {
3896                 wl_subsurface_set_position(surface->subsurface,
3897                                            widget->allocation.x,
3898                                            widget->allocation.y);
3899         }
3900         if (surface->allocation.width != widget->allocation.width ||
3901             surface->allocation.height != widget->allocation.height) {
3902                 window_schedule_redraw(widget->window);
3903         }
3904         surface->allocation = widget->allocation;
3905
3906         if (widget->opaque)
3907                 wl_region_add(surface->opaque_region, 0, 0,
3908                               widget->allocation.width,
3909                               widget->allocation.height);
3910 }
3911
3912 static void
3913 hack_prevent_EGL_sub_surface_deadlock(struct window *window)
3914 {
3915         /*
3916          * This hack should be removed, when EGL respects
3917          * eglSwapInterval(0).
3918          *
3919          * If this window has sub-surfaces, especially a free-running
3920          * EGL-widget, we need to post the parent surface once with
3921          * all the old state to guarantee, that the EGL-widget will
3922          * receive its frame callback soon. Otherwise, a forced call
3923          * to eglSwapBuffers may end up blocking, waiting for a frame
3924          * event that will never come, because we will commit the parent
3925          * surface with all new state only after eglSwapBuffers returns.
3926          *
3927          * This assumes, that:
3928          * 1. When the EGL widget's resize hook is called, it pauses.
3929          * 2. When the EGL widget's redraw hook is called, it forces a
3930          *    repaint and a call to eglSwapBuffers(), and maybe resumes.
3931          * In a single threaded application condition 1 is a no-op.
3932          *
3933          * XXX: This should actually be after the surface_resize() calls,
3934          * but cannot, because then it would commit the incomplete state
3935          * accumulated from the widget resize hooks.
3936          */
3937         if (window->subsurface_list.next != &window->main_surface->link ||
3938             window->subsurface_list.prev != &window->main_surface->link)
3939                 wl_surface_commit(window->main_surface->surface);
3940 }
3941
3942 static void
3943 idle_resize(struct window *window)
3944 {
3945         struct surface *surface;
3946
3947         window->resize_needed = 0;
3948         window->redraw_needed = 1;
3949
3950         DBG("from %dx%d to %dx%d\n",
3951             window->main_surface->server_allocation.width,
3952             window->main_surface->server_allocation.height,
3953             window->pending_allocation.width,
3954             window->pending_allocation.height);
3955
3956         hack_prevent_EGL_sub_surface_deadlock(window);
3957
3958         widget_set_allocation(window->main_surface->widget,
3959                               window->pending_allocation.x,
3960                               window->pending_allocation.y,
3961                               window->pending_allocation.width,
3962                               window->pending_allocation.height);
3963
3964         surface_resize(window->main_surface);
3965
3966         /* The main surface is in the list, too. Main surface's
3967          * resize_handler is responsible for calling widget_set_allocation()
3968          * on all sub-surface root widgets, so they will be resized
3969          * properly.
3970          */
3971         wl_list_for_each(surface, &window->subsurface_list, link) {
3972                 if (surface == window->main_surface)
3973                         continue;
3974
3975                 surface_set_synchronized(surface);
3976                 surface_resize(surface);
3977         }
3978 }
3979
3980 void
3981 window_schedule_resize(struct window *window, int width, int height)
3982 {
3983         window->pending_allocation.x = 0;
3984         window->pending_allocation.y = 0;
3985         window->pending_allocation.width = width;
3986         window->pending_allocation.height = height;
3987
3988         if (window->min_allocation.width == 0)
3989                 window->min_allocation = window->pending_allocation;
3990         if (window->pending_allocation.width < window->min_allocation.width)
3991                 window->pending_allocation.width = window->min_allocation.width;
3992         if (window->pending_allocation.height < window->min_allocation.height)
3993                 window->pending_allocation.height = window->min_allocation.height;
3994
3995         window->resize_needed = 1;
3996         window_schedule_redraw(window);
3997 }
3998
3999 void
4000 widget_schedule_resize(struct widget *widget, int32_t width, int32_t height)
4001 {
4002         window_schedule_resize(widget->window, width, height);
4003 }
4004
4005 static void
4006 handle_ping(void *data, struct wl_shell_surface *shell_surface,
4007                                                         uint32_t serial)
4008 {
4009         wl_shell_surface_pong(shell_surface, serial);
4010 }
4011
4012 static void
4013 handle_configure(void *data, struct wl_shell_surface *shell_surface,
4014                  uint32_t edges, int32_t width, int32_t height)
4015 {
4016         struct window *window = data;
4017
4018         window->resize_edges = edges;
4019         window_schedule_resize(window, width, height);
4020 }
4021
4022 static void
4023 menu_destroy(struct menu *menu)
4024 {
4025         widget_destroy(menu->widget);
4026         window_destroy(menu->window);
4027         free(menu);
4028 }
4029
4030 static void
4031 handle_popup_done(void *data, struct wl_shell_surface *shell_surface)
4032 {
4033         struct window *window = data;
4034         struct menu *menu = window->main_surface->widget->user_data;
4035
4036         /* FIXME: Need more context in this event, at least the input
4037          * device.  Or just use wl_callback.  And this really needs to
4038          * be a window vfunc that the menu can set.  And we need the
4039          * time. */
4040
4041         input_ungrab(menu->input);
4042         menu_destroy(menu);
4043 }
4044
4045 static const struct wl_shell_surface_listener shell_surface_listener = {
4046         handle_ping,
4047         handle_configure,
4048         handle_popup_done
4049 };
4050
4051 void
4052 window_get_allocation(struct window *window,
4053                       struct rectangle *allocation)
4054 {
4055         *allocation = window->main_surface->allocation;
4056 }
4057
4058 static void
4059 widget_redraw(struct widget *widget)
4060 {
4061         struct widget *child;
4062
4063         if (widget->redraw_handler)
4064                 widget->redraw_handler(widget, widget->user_data);
4065         wl_list_for_each(child, &widget->child_list, link)
4066                 widget_redraw(child);
4067 }
4068
4069 static void
4070 frame_callback(void *data, struct wl_callback *callback, uint32_t time)
4071 {
4072         struct surface *surface = data;
4073
4074         assert(callback == surface->frame_cb);
4075         DBG_OBJ(callback, "done\n");
4076         wl_callback_destroy(callback);
4077         surface->frame_cb = NULL;
4078
4079         surface->last_time = time;
4080
4081         if (surface->redraw_needed || surface->window->redraw_needed) {
4082                 DBG_OBJ(surface->surface, "window_schedule_redraw_task\n");
4083                 window_schedule_redraw_task(surface->window);
4084         }
4085 }
4086
4087 static const struct wl_callback_listener listener = {
4088         frame_callback
4089 };
4090
4091 static void
4092 surface_redraw(struct surface *surface)
4093 {
4094         DBG_OBJ(surface->surface, "begin\n");
4095
4096         if (!surface->window->redraw_needed && !surface->redraw_needed)
4097                 return;
4098
4099         /* Whole-window redraw forces a redraw even if the previous has
4100          * not yet hit the screen.
4101          */
4102         if (surface->frame_cb) {
4103                 if (!surface->window->redraw_needed)
4104                         return;
4105
4106                 DBG_OBJ(surface->frame_cb, "cancelled\n");
4107                 wl_callback_destroy(surface->frame_cb);
4108         }
4109
4110         surface->frame_cb = wl_surface_frame(surface->surface);
4111         wl_callback_add_listener(surface->frame_cb, &listener, surface);
4112         DBG_OBJ(surface->frame_cb, "new\n");
4113
4114         surface->redraw_needed = 0;
4115         DBG_OBJ(surface->surface, "-> widget_redraw\n");
4116         widget_redraw(surface->widget);
4117         DBG_OBJ(surface->surface, "done\n");
4118 }
4119
4120 static void
4121 idle_redraw(struct task *task, uint32_t events)
4122 {
4123         struct window *window = container_of(task, struct window, redraw_task);
4124         struct surface *surface;
4125
4126         DBG(" --------- \n");
4127
4128         wl_list_init(&window->redraw_task.link);
4129         window->redraw_task_scheduled = 0;
4130
4131         if (window->resize_needed) {
4132                 /* throttle resizing to the main surface display */
4133                 if (window->main_surface->frame_cb) {
4134                         DBG_OBJ(window->main_surface->frame_cb, "pending\n");
4135                         return;
4136                 }
4137
4138                 idle_resize(window);
4139         }
4140
4141         wl_list_for_each(surface, &window->subsurface_list, link)
4142                 surface_redraw(surface);
4143
4144         window->redraw_needed = 0;
4145         window_flush(window);
4146
4147         wl_list_for_each(surface, &window->subsurface_list, link)
4148                 surface_set_synchronized_default(surface);
4149 }
4150
4151 static void
4152 window_schedule_redraw_task(struct window *window)
4153 {
4154         if (window->configure_requests)
4155                 return;
4156         if (!window->redraw_task_scheduled) {
4157                 window->redraw_task.run = idle_redraw;
4158                 display_defer(window->display, &window->redraw_task);
4159                 window->redraw_task_scheduled = 1;
4160         }
4161 }
4162
4163 void
4164 window_schedule_redraw(struct window *window)
4165 {
4166         struct surface *surface;
4167
4168         DBG_OBJ(window->main_surface->surface, "window %p\n", window);
4169
4170         wl_list_for_each(surface, &window->subsurface_list, link)
4171                 surface->redraw_needed = 1;
4172
4173         window_schedule_redraw_task(window);
4174 }
4175
4176 int
4177 window_is_fullscreen(struct window *window)
4178 {
4179         return window->type == TYPE_FULLSCREEN;
4180 }
4181
4182 static void
4183 configure_request_completed(void *data, struct wl_callback *callback, uint32_t  time)
4184 {
4185         struct window *window = data;
4186
4187         wl_callback_destroy(callback);
4188         window->configure_requests--;
4189
4190         if (!window->configure_requests)
4191                 window_schedule_redraw(window);
4192 }
4193
4194 static struct wl_callback_listener configure_request_listener = {
4195         configure_request_completed,
4196 };
4197
4198 static void
4199 window_defer_redraw_until_configure(struct window* window)
4200 {
4201         struct wl_callback *callback;
4202
4203         if (window->redraw_task_scheduled) {
4204                 wl_list_remove(&window->redraw_task.link);
4205                 window->redraw_task_scheduled = 0;
4206         }
4207
4208         callback = wl_display_sync(window->display->display);
4209         wl_callback_add_listener(callback, &configure_request_listener, window);
4210         window->configure_requests++;
4211 }
4212
4213 void
4214 window_set_fullscreen(struct window *window, int fullscreen)
4215 {
4216         if (!window->display->shell)
4217                 return;
4218
4219         if ((window->type == TYPE_FULLSCREEN) == fullscreen)
4220                 return;
4221
4222         if (fullscreen) {
4223                 window->saved_type = window->type;
4224                 if (window->type == TYPE_TOPLEVEL) {
4225                         window->saved_allocation = window->main_surface->allocation;
4226                 }
4227                 window->type = TYPE_FULLSCREEN;
4228                 wl_shell_surface_set_fullscreen(window->shell_surface,
4229                                                 window->fullscreen_method,
4230                                                 0, NULL);
4231                 window_defer_redraw_until_configure (window);
4232         } else {
4233                 if (window->saved_type == TYPE_MAXIMIZED) {
4234                         window_set_maximized(window, 1);
4235                 } else {
4236                         window->type = TYPE_TOPLEVEL;
4237                         wl_shell_surface_set_toplevel(window->shell_surface);
4238                         window_schedule_resize(window,
4239                                                    window->saved_allocation.width,
4240                                                    window->saved_allocation.height);
4241                 }
4242
4243         }
4244 }
4245
4246 void
4247 window_set_fullscreen_method(struct window *window,
4248                              enum wl_shell_surface_fullscreen_method method)
4249 {
4250         window->fullscreen_method = method;
4251 }
4252
4253 int
4254 window_is_maximized(struct window *window)
4255 {
4256         return window->type == TYPE_MAXIMIZED;
4257 }
4258
4259 void
4260 window_set_maximized(struct window *window, int maximized)
4261 {
4262         if (!window->display->shell)
4263                 return;
4264
4265         if ((window->type == TYPE_MAXIMIZED) == maximized)
4266                 return;
4267
4268         if (window->type == TYPE_TOPLEVEL) {
4269                 window->saved_allocation = window->main_surface->allocation;
4270                 wl_shell_surface_set_maximized(window->shell_surface, NULL);
4271                 window->type = TYPE_MAXIMIZED;
4272                 window_defer_redraw_until_configure(window);
4273         } else if (window->type == TYPE_FULLSCREEN) {
4274                 wl_shell_surface_set_maximized(window->shell_surface, NULL);
4275                 window->type = TYPE_MAXIMIZED;
4276                 window_defer_redraw_until_configure(window);
4277         } else {
4278                 wl_shell_surface_set_toplevel(window->shell_surface);
4279                 window->type = TYPE_TOPLEVEL;
4280                 window_schedule_resize(window,
4281                                        window->saved_allocation.width,
4282                                        window->saved_allocation.height);
4283         }
4284 }
4285
4286 void
4287 window_set_user_data(struct window *window, void *data)
4288 {
4289         window->user_data = data;
4290 }
4291
4292 void *
4293 window_get_user_data(struct window *window)
4294 {
4295         return window->user_data;
4296 }
4297
4298 void
4299 window_set_key_handler(struct window *window,
4300                        window_key_handler_t handler)
4301 {
4302         window->key_handler = handler;
4303 }
4304
4305 void
4306 window_set_keyboard_focus_handler(struct window *window,
4307                                   window_keyboard_focus_handler_t handler)
4308 {
4309         window->keyboard_focus_handler = handler;
4310 }
4311
4312 void
4313 window_set_data_handler(struct window *window, window_data_handler_t handler)
4314 {
4315         window->data_handler = handler;
4316 }
4317
4318 void
4319 window_set_drop_handler(struct window *window, window_drop_handler_t handler)
4320 {
4321         window->drop_handler = handler;
4322 }
4323
4324 void
4325 window_set_close_handler(struct window *window,
4326                          window_close_handler_t handler)
4327 {
4328         window->close_handler = handler;
4329 }
4330
4331 void
4332 window_set_fullscreen_handler(struct window *window,
4333                               window_fullscreen_handler_t handler)
4334 {
4335         window->fullscreen_handler = handler;
4336 }
4337
4338 void
4339 window_set_output_handler(struct window *window,
4340                           window_output_handler_t handler)
4341 {
4342         window->output_handler = handler;
4343 }
4344
4345 void
4346 window_set_title(struct window *window, const char *title)
4347 {
4348         free(window->title);
4349         window->title = strdup(title);
4350         if (window->shell_surface)
4351                 wl_shell_surface_set_title(window->shell_surface, title);
4352 }
4353
4354 const char *
4355 window_get_title(struct window *window)
4356 {
4357         return window->title;
4358 }
4359
4360 void
4361 window_set_text_cursor_position(struct window *window, int32_t x, int32_t y)
4362 {
4363         struct text_cursor_position *text_cursor_position =
4364                                         window->display->text_cursor_position;
4365
4366         if (!text_cursor_position)
4367                 return;
4368
4369         text_cursor_position_notify(text_cursor_position,
4370                                     window->main_surface->surface,
4371                                     wl_fixed_from_int(x),
4372                                     wl_fixed_from_int(y));
4373 }
4374
4375 void
4376 window_damage(struct window *window, int32_t x, int32_t y,
4377               int32_t width, int32_t height)
4378 {
4379         wl_surface_damage(window->main_surface->surface, x, y, width, height);
4380 }
4381
4382 static void
4383 surface_enter(void *data,
4384               struct wl_surface *wl_surface, struct wl_output *wl_output)
4385 {
4386         struct window *window = data;
4387         struct output *output;
4388         struct output *output_found = NULL;
4389         struct window_output *window_output;
4390
4391         wl_list_for_each(output, &window->display->output_list, link) {
4392                 if (output->output == wl_output) {
4393                         output_found = output;
4394                         break;
4395                 }
4396         }
4397
4398         if (!output_found)
4399                 return;
4400
4401         window_output = xmalloc(sizeof *window_output);
4402         window_output->output = output_found;
4403
4404         wl_list_insert (&window->window_output_list, &window_output->link);
4405
4406         if (window->output_handler)
4407                 window->output_handler(window, output_found, 1,
4408                                        window->user_data);
4409 }
4410
4411 static void
4412 surface_leave(void *data,
4413               struct wl_surface *wl_surface, struct wl_output *output)
4414 {
4415         struct window *window = data;
4416         struct window_output *window_output;
4417         struct window_output *window_output_found = NULL;
4418
4419         wl_list_for_each(window_output, &window->window_output_list, link) {
4420                 if (window_output->output->output == output) {
4421                         window_output_found = window_output;
4422                         break;
4423                 }
4424         }
4425
4426         if (window_output_found) {
4427                 wl_list_remove(&window_output_found->link);
4428
4429                 if (window->output_handler)
4430                         window->output_handler(window, window_output->output,
4431                                                0, window->user_data);
4432
4433                 free(window_output_found);
4434         }
4435 }
4436
4437 static const struct wl_surface_listener surface_listener = {
4438         surface_enter,
4439         surface_leave
4440 };
4441
4442 static struct surface *
4443 surface_create(struct window *window)
4444 {
4445         struct display *display = window->display;
4446         struct surface *surface;
4447
4448         surface = xmalloc(sizeof *surface);
4449         memset(surface, 0, sizeof *surface);
4450         if (!surface)
4451                 return NULL;
4452
4453         surface->window = window;
4454         surface->surface = wl_compositor_create_surface(display->compositor);
4455         surface->buffer_scale = 1;
4456         wl_surface_add_listener(surface->surface, &surface_listener, window);
4457
4458         wl_list_insert(&window->subsurface_list, &surface->link);
4459
4460         return surface;
4461 }
4462
4463 static struct window *
4464 window_create_internal(struct display *display,
4465                        struct window *parent, int type)
4466 {
4467         struct window *window;
4468         struct surface *surface;
4469
4470         window = xzalloc(sizeof *window);
4471         wl_list_init(&window->subsurface_list);
4472         window->display = display;
4473         window->parent = parent;
4474
4475         surface = surface_create(window);
4476         window->main_surface = surface;
4477
4478         if (type != TYPE_CUSTOM && display->shell) {
4479                 window->shell_surface =
4480                         wl_shell_get_shell_surface(display->shell,
4481                                                    surface->surface);
4482                 fail_on_null(window->shell_surface);
4483         }
4484
4485         window->type = type;
4486         window->fullscreen_method = WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT;
4487         window->configure_requests = 0;
4488         window->preferred_format = WINDOW_PREFERRED_FORMAT_NONE;
4489
4490         if (display->argb_device)
4491 #ifdef HAVE_CAIRO_EGL
4492                 surface->buffer_type = WINDOW_BUFFER_TYPE_EGL_WINDOW;
4493 #else
4494                 surface->buffer_type = WINDOW_BUFFER_TYPE_SHM;
4495 #endif
4496         else
4497                 surface->buffer_type = WINDOW_BUFFER_TYPE_SHM;
4498
4499         wl_surface_set_user_data(surface->surface, window);
4500         wl_list_insert(display->window_list.prev, &window->link);
4501         wl_list_init(&window->redraw_task.link);
4502
4503         if (window->shell_surface) {
4504                 wl_shell_surface_set_user_data(window->shell_surface, window);
4505                 wl_shell_surface_add_listener(window->shell_surface,
4506                                               &shell_surface_listener, window);
4507         }
4508
4509         wl_list_init (&window->window_output_list);
4510
4511         return window;
4512 }
4513
4514 struct window *
4515 window_create(struct display *display)
4516 {
4517         return window_create_internal(display, NULL, TYPE_NONE);
4518 }
4519
4520 struct window *
4521 window_create_custom(struct display *display)
4522 {
4523         return window_create_internal(display, NULL, TYPE_CUSTOM);
4524 }
4525
4526 struct window *
4527 window_create_transient(struct display *display, struct window *parent,
4528                         int32_t x, int32_t y, uint32_t flags)
4529 {
4530         struct window *window;
4531
4532         window = window_create_internal(parent->display,
4533                                         parent, TYPE_TRANSIENT);
4534
4535         window->x = x;
4536         window->y = y;
4537
4538         if (display->shell)
4539                 wl_shell_surface_set_transient(
4540                         window->shell_surface,
4541                         window->parent->main_surface->surface,
4542                         window->x, window->y, flags);
4543
4544         return window;
4545 }
4546
4547 static void
4548 menu_set_item(struct menu *menu, int sy)
4549 {
4550         int next;
4551
4552         next = (sy - 8) / 20;
4553         if (menu->current != next) {
4554                 menu->current = next;
4555                 widget_schedule_redraw(menu->widget);
4556         }
4557 }
4558
4559 static int
4560 menu_motion_handler(struct widget *widget,
4561                     struct input *input, uint32_t time,
4562                     float x, float y, void *data)
4563 {
4564         struct menu *menu = data;
4565
4566         if (widget == menu->widget)
4567                 menu_set_item(data, y);
4568
4569         return CURSOR_LEFT_PTR;
4570 }
4571
4572 static int
4573 menu_enter_handler(struct widget *widget,
4574                    struct input *input, float x, float y, void *data)
4575 {
4576         struct menu *menu = data;
4577
4578         if (widget == menu->widget)
4579                 menu_set_item(data, y);
4580
4581         return CURSOR_LEFT_PTR;
4582 }
4583
4584 static void
4585 menu_leave_handler(struct widget *widget, struct input *input, void *data)
4586 {
4587         struct menu *menu = data;
4588
4589         if (widget == menu->widget)
4590                 menu_set_item(data, -200);
4591 }
4592
4593 static void
4594 menu_button_handler(struct widget *widget,
4595                     struct input *input, uint32_t time,
4596                     uint32_t button, enum wl_pointer_button_state state,
4597                     void *data)
4598
4599 {
4600         struct menu *menu = data;
4601
4602         if (state == WL_POINTER_BUTTON_STATE_RELEASED &&
4603             (menu->release_count > 0 || time - menu->time > 500)) {
4604                 /* Either relase after press-drag-release or
4605                  * click-motion-click. */
4606                 menu->func(menu->window->parent,
4607                            menu->current, menu->window->parent->user_data);
4608                 input_ungrab(input);
4609                 menu_destroy(menu);
4610         } else if (state == WL_POINTER_BUTTON_STATE_RELEASED) {
4611                 menu->release_count++;
4612         }
4613 }
4614
4615 static void
4616 menu_redraw_handler(struct widget *widget, void *data)
4617 {
4618         cairo_t *cr;
4619         const int32_t r = 3, margin = 3;
4620         struct menu *menu = data;
4621         int32_t width, height, i;
4622
4623         cr = widget_cairo_create(widget);
4624         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
4625         cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
4626         cairo_paint(cr);
4627
4628         width = widget->allocation.width;
4629         height = widget->allocation.height;
4630         rounded_rect(cr, 0, 0, width, height, r);
4631
4632         cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
4633         cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8);
4634         cairo_fill(cr);
4635
4636         for (i = 0; i < menu->count; i++) {
4637                 if (i == menu->current) {
4638                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
4639                         cairo_rectangle(cr, margin, i * 20 + margin,
4640                                         width - 2 * margin, 20);
4641                         cairo_fill(cr);
4642                         cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
4643                         cairo_move_to(cr, 10, i * 20 + 16);
4644                         cairo_show_text(cr, menu->entries[i]);
4645                 } else {
4646                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
4647                         cairo_move_to(cr, 10, i * 20 + 16);
4648                         cairo_show_text(cr, menu->entries[i]);
4649                 }
4650         }
4651
4652         cairo_destroy(cr);
4653 }
4654
4655 void
4656 window_show_menu(struct display *display,
4657                  struct input *input, uint32_t time, struct window *parent,
4658                  int32_t x, int32_t y,
4659                  menu_func_t func, const char **entries, int count)
4660 {
4661         struct window *window;
4662         struct menu *menu;
4663         const int32_t margin = 3;
4664
4665         menu = malloc(sizeof *menu);
4666         if (!menu)
4667                 return;
4668
4669         window = window_create_internal(parent->display, parent, TYPE_MENU);
4670         if (!window) {
4671                 free(menu);
4672                 return;
4673         }
4674
4675         menu->window = window;
4676         menu->widget = window_add_widget(menu->window, menu);
4677         window_set_buffer_scale (menu->window, window_get_buffer_scale (parent));
4678         window_set_buffer_transform (menu->window, window_get_buffer_transform (parent));
4679         menu->entries = entries;
4680         menu->count = count;
4681         menu->release_count = 0;
4682         menu->current = -1;
4683         menu->time = time;
4684         menu->func = func;
4685         menu->input = input;
4686         window->type = TYPE_MENU;
4687         window->x = x;
4688         window->y = y;
4689
4690         input_ungrab(input);
4691         wl_shell_surface_set_popup(window->shell_surface, input->seat,
4692                                    display_get_serial(window->display),
4693                                    window->parent->main_surface->surface,
4694                                    window->x, window->y, 0);
4695
4696         widget_set_redraw_handler(menu->widget, menu_redraw_handler);
4697         widget_set_enter_handler(menu->widget, menu_enter_handler);
4698         widget_set_leave_handler(menu->widget, menu_leave_handler);
4699         widget_set_motion_handler(menu->widget, menu_motion_handler);
4700         widget_set_button_handler(menu->widget, menu_button_handler);
4701
4702         input_grab(input, menu->widget, 0);
4703         window_schedule_resize(window, 200, count * 20 + margin * 2);
4704 }
4705
4706 void
4707 window_set_buffer_type(struct window *window, enum window_buffer_type type)
4708 {
4709         window->main_surface->buffer_type = type;
4710 }
4711
4712 void
4713 window_set_preferred_format(struct window *window,
4714                             enum preferred_format format)
4715 {
4716         window->preferred_format = format;
4717 }
4718
4719 struct widget *
4720 window_add_subsurface(struct window *window, void *data,
4721                       enum subsurface_mode default_mode)
4722 {
4723         struct widget *widget;
4724         struct surface *surface;
4725         struct wl_surface *parent;
4726         struct wl_subcompositor *subcompo = window->display->subcompositor;
4727
4728         surface = surface_create(window);
4729         widget = widget_create(window, surface, data);
4730         wl_list_init(&widget->link);
4731         surface->widget = widget;
4732
4733         parent = window->main_surface->surface;
4734         surface->subsurface = wl_subcompositor_get_subsurface(subcompo,
4735                                                               surface->surface,
4736                                                               parent);
4737         surface->synchronized = 1;
4738
4739         switch (default_mode) {
4740         case SUBSURFACE_SYNCHRONIZED:
4741                 surface->synchronized_default = 1;
4742                 break;
4743         case SUBSURFACE_DESYNCHRONIZED:
4744                 surface->synchronized_default = 0;
4745                 break;
4746         default:
4747                 assert(!"bad enum subsurface_mode");
4748         }
4749
4750         return widget;
4751 }
4752
4753 static void
4754 display_handle_geometry(void *data,
4755                         struct wl_output *wl_output,
4756                         int x, int y,
4757                         int physical_width,
4758                         int physical_height,
4759                         int subpixel,
4760                         const char *make,
4761                         const char *model,
4762                         int transform)
4763 {
4764         struct output *output = data;
4765
4766         output->allocation.x = x;
4767         output->allocation.y = y;
4768         output->transform = transform;
4769 }
4770
4771 static void
4772 display_handle_done(void *data,
4773                      struct wl_output *wl_output)
4774 {
4775 }
4776
4777 static void
4778 display_handle_scale(void *data,
4779                      struct wl_output *wl_output,
4780                      int32_t scale)
4781 {
4782         struct output *output = data;
4783
4784         output->scale = scale;
4785 }
4786
4787 static void
4788 display_handle_mode(void *data,
4789                     struct wl_output *wl_output,
4790                     uint32_t flags,
4791                     int width,
4792                     int height,
4793                     int refresh)
4794 {
4795         struct output *output = data;
4796         struct display *display = output->display;
4797
4798         if (flags & WL_OUTPUT_MODE_CURRENT) {
4799                 output->allocation.width = width;
4800                 output->allocation.height = height;
4801                 if (display->output_configure_handler)
4802                         (*display->output_configure_handler)(
4803                                                 output, display->user_data);
4804         }
4805 }
4806
4807 static const struct wl_output_listener output_listener = {
4808         display_handle_geometry,
4809         display_handle_mode,
4810         display_handle_done,
4811         display_handle_scale
4812 };
4813
4814 static void
4815 display_add_output(struct display *d, uint32_t id)
4816 {
4817         struct output *output;
4818
4819         output = xzalloc(sizeof *output);
4820         output->display = d;
4821         output->scale = 1;
4822         output->output =
4823                 wl_registry_bind(d->registry, id, &wl_output_interface, 2);
4824         wl_list_insert(d->output_list.prev, &output->link);
4825
4826         wl_output_add_listener(output->output, &output_listener, output);
4827 }
4828
4829 static void
4830 output_destroy(struct output *output)
4831 {
4832         if (output->destroy_handler)
4833                 (*output->destroy_handler)(output, output->user_data);
4834
4835         wl_output_destroy(output->output);
4836         wl_list_remove(&output->link);
4837         free(output);
4838 }
4839
4840 void
4841 display_set_global_handler(struct display *display,
4842                            display_global_handler_t handler)
4843 {
4844         struct global *global;
4845
4846         display->global_handler = handler;
4847         if (!handler)
4848                 return;
4849
4850         wl_list_for_each(global, &display->global_list, link)
4851                 display->global_handler(display,
4852                                         global->name, global->interface,
4853                                         global->version, display->user_data);
4854 }
4855
4856 void
4857 display_set_output_configure_handler(struct display *display,
4858                                      display_output_handler_t handler)
4859 {
4860         struct output *output;
4861
4862         display->output_configure_handler = handler;
4863         if (!handler)
4864                 return;
4865
4866         wl_list_for_each(output, &display->output_list, link) {
4867                 if (output->allocation.width == 0 &&
4868                     output->allocation.height == 0)
4869                         continue;
4870
4871                 (*display->output_configure_handler)(output,
4872                                                      display->user_data);
4873         }
4874 }
4875
4876 void
4877 output_set_user_data(struct output *output, void *data)
4878 {
4879         output->user_data = data;
4880 }
4881
4882 void *
4883 output_get_user_data(struct output *output)
4884 {
4885         return output->user_data;
4886 }
4887
4888 void
4889 output_set_destroy_handler(struct output *output,
4890                            display_output_handler_t handler)
4891 {
4892         output->destroy_handler = handler;
4893         /* FIXME: implement this, once we have way to remove outputs */
4894 }
4895
4896 void
4897 output_get_allocation(struct output *output, struct rectangle *base)
4898 {
4899         struct rectangle allocation = output->allocation;
4900
4901         switch (output->transform) {
4902         case WL_OUTPUT_TRANSFORM_90:
4903         case WL_OUTPUT_TRANSFORM_270:
4904         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
4905         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
4906                 /* Swap width and height */
4907                 allocation.width = output->allocation.height;
4908                 allocation.height = output->allocation.width;
4909                 break;
4910         }
4911
4912         *base = allocation;
4913 }
4914
4915 struct wl_output *
4916 output_get_wl_output(struct output *output)
4917 {
4918         return output->output;
4919 }
4920
4921 enum wl_output_transform
4922 output_get_transform(struct output *output)
4923 {
4924         return output->transform;
4925 }
4926
4927 uint32_t
4928 output_get_scale(struct output *output)
4929 {
4930         return output->scale;
4931 }
4932
4933 static void
4934 fini_xkb(struct input *input)
4935 {
4936         xkb_state_unref(input->xkb.state);
4937         xkb_map_unref(input->xkb.keymap);
4938 }
4939
4940 static void
4941 display_add_input(struct display *d, uint32_t id)
4942 {
4943         struct input *input;
4944
4945         input = xzalloc(sizeof *input);
4946         input->display = d;
4947         input->seat = wl_registry_bind(d->registry, id, &wl_seat_interface, 1);
4948         input->touch_focus = NULL;
4949         input->pointer_focus = NULL;
4950         input->keyboard_focus = NULL;
4951         wl_list_init(&input->touch_point_list);
4952         wl_list_insert(d->input_list.prev, &input->link);
4953
4954         wl_seat_add_listener(input->seat, &seat_listener, input);
4955         wl_seat_set_user_data(input->seat, input);
4956
4957         input->data_device =
4958                 wl_data_device_manager_get_data_device(d->data_device_manager,
4959                                                        input->seat);
4960         wl_data_device_add_listener(input->data_device, &data_device_listener,
4961                                     input);
4962
4963         input->pointer_surface = wl_compositor_create_surface(d->compositor);
4964
4965         input->repeat_timer_fd = timerfd_create(CLOCK_MONOTONIC,
4966                                                 TFD_CLOEXEC | TFD_NONBLOCK);
4967         input->repeat_task.run = keyboard_repeat_func;
4968         display_watch_fd(d, input->repeat_timer_fd,
4969                          EPOLLIN, &input->repeat_task);
4970 }
4971
4972 static void
4973 input_destroy(struct input *input)
4974 {
4975         input_remove_keyboard_focus(input);
4976         input_remove_pointer_focus(input);
4977
4978         if (input->drag_offer)
4979                 data_offer_destroy(input->drag_offer);
4980
4981         if (input->selection_offer)
4982                 data_offer_destroy(input->selection_offer);
4983
4984         wl_data_device_destroy(input->data_device);
4985         fini_xkb(input);
4986
4987         wl_surface_destroy(input->pointer_surface);
4988
4989         wl_list_remove(&input->link);
4990         wl_seat_destroy(input->seat);
4991         close(input->repeat_timer_fd);
4992         free(input);
4993 }
4994
4995 static void
4996 init_workspace_manager(struct display *d, uint32_t id)
4997 {
4998         d->workspace_manager =
4999                 wl_registry_bind(d->registry, id,
5000                                  &workspace_manager_interface, 1);
5001         if (d->workspace_manager != NULL)
5002                 workspace_manager_add_listener(d->workspace_manager,
5003                                                &workspace_manager_listener,
5004                                                d);
5005 }
5006
5007 static void
5008 shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
5009 {
5010         struct display *d = data;
5011
5012         if (format == WL_SHM_FORMAT_RGB565)
5013                 d->has_rgb565 = 1;
5014 }
5015
5016 struct wl_shm_listener shm_listener = {
5017         shm_format
5018 };
5019
5020 static void
5021 registry_handle_global(void *data, struct wl_registry *registry, uint32_t id,
5022                        const char *interface, uint32_t version)
5023 {
5024         struct display *d = data;
5025         struct global *global;
5026
5027         global = xmalloc(sizeof *global);
5028         global->name = id;
5029         global->interface = strdup(interface);
5030         global->version = version;
5031         wl_list_insert(d->global_list.prev, &global->link);
5032
5033         if (strcmp(interface, "wl_compositor") == 0) {
5034                 d->compositor = wl_registry_bind(registry, id,
5035                                                  &wl_compositor_interface, 3);
5036         } else if (strcmp(interface, "wl_output") == 0) {
5037                 display_add_output(d, id);
5038         } else if (strcmp(interface, "wl_seat") == 0) {
5039                 display_add_input(d, id);
5040         } else if (strcmp(interface, "wl_shell") == 0) {
5041                 d->shell = wl_registry_bind(registry,
5042                                             id, &wl_shell_interface, 1);
5043         } else if (strcmp(interface, "wl_shm") == 0) {
5044                 d->shm = wl_registry_bind(registry, id, &wl_shm_interface, 1);
5045                 wl_shm_add_listener(d->shm, &shm_listener, d);
5046         } else if (strcmp(interface, "wl_data_device_manager") == 0) {
5047                 d->data_device_manager =
5048                         wl_registry_bind(registry, id,
5049                                          &wl_data_device_manager_interface, 1);
5050         } else if (strcmp(interface, "text_cursor_position") == 0) {
5051                 d->text_cursor_position =
5052                         wl_registry_bind(registry, id,
5053                                          &text_cursor_position_interface, 1);
5054         } else if (strcmp(interface, "workspace_manager") == 0) {
5055                 init_workspace_manager(d, id);
5056         } else if (strcmp(interface, "wl_subcompositor") == 0) {
5057                 d->subcompositor =
5058                         wl_registry_bind(registry, id,
5059                                          &wl_subcompositor_interface, 1);
5060         }
5061
5062         if (d->global_handler)
5063                 d->global_handler(d, id, interface, version, d->user_data);
5064 }
5065
5066 static void
5067 registry_handle_global_remove(void *data, struct wl_registry *registry,
5068                               uint32_t name)
5069 {
5070         struct display *d = data;
5071         struct global *global;
5072         struct global *tmp;
5073
5074         wl_list_for_each_safe(global, tmp, &d->global_list, link) {
5075                 if (global->name != name)
5076                         continue;
5077
5078                 /* XXX: Should destroy bound globals, and call
5079                  * the counterpart of display::global_handler
5080                  */
5081                 wl_list_remove(&global->link);
5082                 free(global->interface);
5083                 free(global);
5084         }
5085 }
5086
5087 void *
5088 display_bind(struct display *display, uint32_t name,
5089              const struct wl_interface *interface, uint32_t version)
5090 {
5091         return wl_registry_bind(display->registry, name, interface, version);
5092 }
5093
5094 static const struct wl_registry_listener registry_listener = {
5095         registry_handle_global,
5096         registry_handle_global_remove
5097 };
5098
5099 #ifdef HAVE_CAIRO_EGL
5100 static int
5101 init_egl(struct display *d)
5102 {
5103         EGLint major, minor;
5104         EGLint n;
5105
5106 #ifdef USE_CAIRO_GLESV2
5107 #  define GL_BIT EGL_OPENGL_ES2_BIT
5108 #else
5109 #  define GL_BIT EGL_OPENGL_BIT
5110 #endif
5111
5112         static const EGLint argb_cfg_attribs[] = {
5113                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
5114                 EGL_RED_SIZE, 1,
5115                 EGL_GREEN_SIZE, 1,
5116                 EGL_BLUE_SIZE, 1,
5117                 EGL_ALPHA_SIZE, 1,
5118                 EGL_DEPTH_SIZE, 1,
5119                 EGL_RENDERABLE_TYPE, GL_BIT,
5120                 EGL_NONE
5121         };
5122
5123 #ifdef USE_CAIRO_GLESV2
5124         static const EGLint context_attribs[] = {
5125                 EGL_CONTEXT_CLIENT_VERSION, 2,
5126                 EGL_NONE
5127         };
5128         EGLint api = EGL_OPENGL_ES_API;
5129 #else
5130         EGLint *context_attribs = NULL;
5131         EGLint api = EGL_OPENGL_API;
5132 #endif
5133
5134         d->dpy = eglGetDisplay(d->display);
5135         if (!eglInitialize(d->dpy, &major, &minor)) {
5136                 fprintf(stderr, "failed to initialize EGL\n");
5137                 return -1;
5138         }
5139
5140         if (!eglBindAPI(api)) {
5141                 fprintf(stderr, "failed to bind EGL client API\n");
5142                 return -1;
5143         }
5144
5145         if (!eglChooseConfig(d->dpy, argb_cfg_attribs,
5146                              &d->argb_config, 1, &n) || n != 1) {
5147                 fprintf(stderr, "failed to choose argb EGL config\n");
5148                 return -1;
5149         }
5150
5151         d->argb_ctx = eglCreateContext(d->dpy, d->argb_config,
5152                                        EGL_NO_CONTEXT, context_attribs);
5153         if (d->argb_ctx == NULL) {
5154                 fprintf(stderr, "failed to create EGL context\n");
5155                 return -1;
5156         }
5157
5158         d->argb_device = cairo_egl_device_create(d->dpy, d->argb_ctx);
5159         if (cairo_device_status(d->argb_device) != CAIRO_STATUS_SUCCESS) {
5160                 fprintf(stderr, "failed to get cairo EGL argb device\n");
5161                 return -1;
5162         }
5163
5164         return 0;
5165 }
5166
5167 static void
5168 fini_egl(struct display *display)
5169 {
5170         cairo_device_destroy(display->argb_device);
5171
5172         eglMakeCurrent(display->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE,
5173                        EGL_NO_CONTEXT);
5174
5175         eglTerminate(display->dpy);
5176         eglReleaseThread();
5177 }
5178 #endif
5179
5180 static void
5181 init_dummy_surface(struct display *display)
5182 {
5183         int len;
5184         void *data;
5185
5186         len = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, 1);
5187         data = malloc(len);
5188         display->dummy_surface =
5189                 cairo_image_surface_create_for_data(data, CAIRO_FORMAT_ARGB32,
5190                                                     1, 1, len);
5191         display->dummy_surface_data = data;
5192 }
5193
5194 static void
5195 handle_display_data(struct task *task, uint32_t events)
5196 {
5197         struct display *display =
5198                 container_of(task, struct display, display_task);
5199         struct epoll_event ep;
5200         int ret;
5201
5202         display->display_fd_events = events;
5203
5204         if (events & EPOLLERR || events & EPOLLHUP) {
5205                 display_exit(display);
5206                 return;
5207         }
5208
5209         if (events & EPOLLIN) {
5210                 ret = wl_display_dispatch(display->display);
5211                 if (ret == -1) {
5212                         display_exit(display);
5213                         return;
5214                 }
5215         }
5216
5217         if (events & EPOLLOUT) {
5218                 ret = wl_display_flush(display->display);
5219                 if (ret == 0) {
5220                         ep.events = EPOLLIN | EPOLLERR | EPOLLHUP;
5221                         ep.data.ptr = &display->display_task;
5222                         epoll_ctl(display->epoll_fd, EPOLL_CTL_MOD,
5223                                   display->display_fd, &ep);
5224                 } else if (ret == -1 && errno != EAGAIN) {
5225                         display_exit(display);
5226                         return;
5227                 }
5228         }
5229 }
5230
5231 static void
5232 log_handler(const char *format, va_list args)
5233 {
5234         vfprintf(stderr, format, args);
5235 }
5236
5237 struct display *
5238 display_create(int *argc, char *argv[])
5239 {
5240         struct display *d;
5241
5242         wl_log_set_handler_client(log_handler);
5243
5244         d = zalloc(sizeof *d);
5245         if (d == NULL)
5246                 return NULL;
5247
5248         d->display = wl_display_connect(NULL);
5249         if (d->display == NULL) {
5250                 fprintf(stderr, "failed to connect to Wayland display: %m\n");
5251                 free(d);
5252                 return NULL;
5253         }
5254
5255         d->xkb_context = xkb_context_new(0);
5256         if (d->xkb_context == NULL) {
5257                 fprintf(stderr, "Failed to create XKB context\n");
5258                 free(d);
5259                 return NULL;
5260         }
5261
5262         d->epoll_fd = os_epoll_create_cloexec();
5263         d->display_fd = wl_display_get_fd(d->display);
5264         d->display_task.run = handle_display_data;
5265         display_watch_fd(d, d->display_fd, EPOLLIN | EPOLLERR | EPOLLHUP,
5266                          &d->display_task);
5267
5268         wl_list_init(&d->deferred_list);
5269         wl_list_init(&d->input_list);
5270         wl_list_init(&d->output_list);
5271         wl_list_init(&d->global_list);
5272
5273         d->workspace = 0;
5274         d->workspace_count = 1;
5275
5276         d->registry = wl_display_get_registry(d->display);
5277         wl_registry_add_listener(d->registry, &registry_listener, d);
5278
5279         if (wl_display_dispatch(d->display) < 0) {
5280                 fprintf(stderr, "Failed to process Wayland connection: %m\n");
5281                 return NULL;
5282         }
5283
5284 #ifdef HAVE_CAIRO_EGL
5285         if (init_egl(d) < 0)
5286                 fprintf(stderr, "EGL does not seem to work, "
5287                         "falling back to software rendering and wl_shm.\n");
5288 #endif
5289
5290         create_cursors(d);
5291
5292         d->theme = theme_create();
5293
5294         wl_list_init(&d->window_list);
5295
5296         init_dummy_surface(d);
5297
5298         return d;
5299 }
5300
5301 static void
5302 display_destroy_outputs(struct display *display)
5303 {
5304         struct output *tmp;
5305         struct output *output;
5306
5307         wl_list_for_each_safe(output, tmp, &display->output_list, link)
5308                 output_destroy(output);
5309 }
5310
5311 static void
5312 display_destroy_inputs(struct display *display)
5313 {
5314         struct input *tmp;
5315         struct input *input;
5316
5317         wl_list_for_each_safe(input, tmp, &display->input_list, link)
5318                 input_destroy(input);
5319 }
5320
5321 void
5322 display_destroy(struct display *display)
5323 {
5324         if (!wl_list_empty(&display->window_list))
5325                 fprintf(stderr, "toytoolkit warning: %d windows exist.\n",
5326                         wl_list_length(&display->window_list));
5327
5328         if (!wl_list_empty(&display->deferred_list))
5329                 fprintf(stderr, "toytoolkit warning: deferred tasks exist.\n");
5330
5331         cairo_surface_destroy(display->dummy_surface);
5332         free(display->dummy_surface_data);
5333
5334         display_destroy_outputs(display);
5335         display_destroy_inputs(display);
5336
5337         xkb_context_unref(display->xkb_context);
5338
5339         theme_destroy(display->theme);
5340         destroy_cursors(display);
5341
5342 #ifdef HAVE_CAIRO_EGL
5343         if (display->argb_device)
5344                 fini_egl(display);
5345 #endif
5346
5347         if (display->subcompositor)
5348                 wl_subcompositor_destroy(display->subcompositor);
5349
5350         if (display->shell)
5351                 wl_shell_destroy(display->shell);
5352
5353         if (display->shm)
5354                 wl_shm_destroy(display->shm);
5355
5356         if (display->data_device_manager)
5357                 wl_data_device_manager_destroy(display->data_device_manager);
5358
5359         wl_compositor_destroy(display->compositor);
5360         wl_registry_destroy(display->registry);
5361
5362         close(display->epoll_fd);
5363
5364         if (!(display->display_fd_events & EPOLLERR) &&
5365             !(display->display_fd_events & EPOLLHUP))
5366                 wl_display_flush(display->display);
5367
5368         wl_display_disconnect(display->display);
5369         free(display);
5370 }
5371
5372 void
5373 display_set_user_data(struct display *display, void *data)
5374 {
5375         display->user_data = data;
5376 }
5377
5378 void *
5379 display_get_user_data(struct display *display)
5380 {
5381         return display->user_data;
5382 }
5383
5384 struct wl_display *
5385 display_get_display(struct display *display)
5386 {
5387         return display->display;
5388 }
5389
5390 int
5391 display_has_subcompositor(struct display *display)
5392 {
5393         if (display->subcompositor)
5394                 return 1;
5395
5396         wl_display_roundtrip(display->display);
5397
5398         return display->subcompositor != NULL;
5399 }
5400
5401 cairo_device_t *
5402 display_get_cairo_device(struct display *display)
5403 {
5404         return display->argb_device;
5405 }
5406
5407 struct output *
5408 display_get_output(struct display *display)
5409 {
5410         return container_of(display->output_list.next, struct output, link);
5411 }
5412
5413 struct wl_compositor *
5414 display_get_compositor(struct display *display)
5415 {
5416         return display->compositor;
5417 }
5418
5419 uint32_t
5420 display_get_serial(struct display *display)
5421 {
5422         return display->serial;
5423 }
5424
5425 EGLDisplay
5426 display_get_egl_display(struct display *d)
5427 {
5428         return d->dpy;
5429 }
5430
5431 struct wl_data_source *
5432 display_create_data_source(struct display *display)
5433 {
5434         return wl_data_device_manager_create_data_source(display->data_device_manager);
5435 }
5436
5437 EGLConfig
5438 display_get_argb_egl_config(struct display *d)
5439 {
5440         return d->argb_config;
5441 }
5442
5443 struct wl_shell *
5444 display_get_shell(struct display *display)
5445 {
5446         return display->shell;
5447 }
5448
5449 int
5450 display_acquire_window_surface(struct display *display,
5451                                struct window *window,
5452                                EGLContext ctx)
5453 {
5454         struct surface *surface = window->main_surface;
5455
5456         if (surface->buffer_type != WINDOW_BUFFER_TYPE_EGL_WINDOW)
5457                 return -1;
5458
5459         widget_get_cairo_surface(window->main_surface->widget);
5460         return surface->toysurface->acquire(surface->toysurface, ctx);
5461 }
5462
5463 void
5464 display_release_window_surface(struct display *display,
5465                                struct window *window)
5466 {
5467         struct surface *surface = window->main_surface;
5468
5469         if (surface->buffer_type != WINDOW_BUFFER_TYPE_EGL_WINDOW)
5470                 return;
5471
5472         surface->toysurface->release(surface->toysurface);
5473 }
5474
5475 void
5476 display_defer(struct display *display, struct task *task)
5477 {
5478         wl_list_insert(&display->deferred_list, &task->link);
5479 }
5480
5481 void
5482 display_watch_fd(struct display *display,
5483                  int fd, uint32_t events, struct task *task)
5484 {
5485         struct epoll_event ep;
5486
5487         ep.events = events;
5488         ep.data.ptr = task;
5489         epoll_ctl(display->epoll_fd, EPOLL_CTL_ADD, fd, &ep);
5490 }
5491
5492 void
5493 display_unwatch_fd(struct display *display, int fd)
5494 {
5495         epoll_ctl(display->epoll_fd, EPOLL_CTL_DEL, fd, NULL);
5496 }
5497
5498 void
5499 display_run(struct display *display)
5500 {
5501         struct task *task;
5502         struct epoll_event ep[16];
5503         int i, count, ret;
5504
5505         display->running = 1;
5506         while (1) {
5507                 while (!wl_list_empty(&display->deferred_list)) {
5508                         task = container_of(display->deferred_list.prev,
5509                                             struct task, link);
5510                         wl_list_remove(&task->link);
5511                         task->run(task, 0);
5512                 }
5513
5514                 wl_display_dispatch_pending(display->display);
5515
5516                 if (!display->running)
5517                         break;
5518
5519                 ret = wl_display_flush(display->display);
5520                 if (ret < 0 && errno == EAGAIN) {
5521                         ep[0].events =
5522                                 EPOLLIN | EPOLLOUT | EPOLLERR | EPOLLHUP;
5523                         ep[0].data.ptr = &display->display_task;
5524
5525                         epoll_ctl(display->epoll_fd, EPOLL_CTL_MOD,
5526                                   display->display_fd, &ep[0]);
5527                 } else if (ret < 0) {
5528                         break;
5529                 }
5530
5531                 count = epoll_wait(display->epoll_fd,
5532                                    ep, ARRAY_LENGTH(ep), -1);
5533                 for (i = 0; i < count; i++) {
5534                         task = ep[i].data.ptr;
5535                         task->run(task, ep[i].events);
5536                 }
5537         }
5538 }
5539
5540 void
5541 display_exit(struct display *display)
5542 {
5543         display->running = 0;
5544 }
5545
5546 void
5547 keysym_modifiers_add(struct wl_array *modifiers_map,
5548                      const char *name)
5549 {
5550         size_t len = strlen(name) + 1;
5551         char *p;
5552
5553         p = wl_array_add(modifiers_map, len);
5554
5555         if (p == NULL)
5556                 return;
5557
5558         strncpy(p, name, len);
5559 }
5560
5561 static xkb_mod_index_t
5562 keysym_modifiers_get_index(struct wl_array *modifiers_map,
5563                            const char *name)
5564 {
5565         xkb_mod_index_t index = 0;
5566         char *p = modifiers_map->data;
5567
5568         while ((const char *)p < (const char *)(modifiers_map->data + modifiers_map->size)) {
5569                 if (strcmp(p, name) == 0)
5570                         return index;
5571
5572                 index++;
5573                 p += strlen(p) + 1;
5574         }
5575
5576         return XKB_MOD_INVALID;
5577 }
5578
5579 xkb_mod_mask_t
5580 keysym_modifiers_get_mask(struct wl_array *modifiers_map,
5581                           const char *name)
5582 {
5583         xkb_mod_index_t index = keysym_modifiers_get_index(modifiers_map, name);
5584
5585         if (index == XKB_MOD_INVALID)
5586                 return XKB_MOD_INVALID;
5587
5588         return 1 << index;
5589 }
5590
5591 void *
5592 fail_on_null(void *p)
5593 {
5594         if (p == NULL) {
5595                 fprintf(stderr, "%s: out of memory\n", program_invocation_short_name);
5596                 exit(EXIT_FAILURE);
5597         }
5598
5599         return p;
5600 }
5601
5602 void *
5603 xmalloc(size_t s)
5604 {
5605         return fail_on_null(malloc(s));
5606 }
5607
5608 void *
5609 xzalloc(size_t s)
5610 {
5611         return fail_on_null(zalloc(s));
5612 }
5613
5614 char *
5615 xstrdup(const char *s)
5616 {
5617         return fail_on_null(strdup(s));
5618 }