clients/window.c

   1 /*
   2  * Copyright © 2008 Kristian Høgsberg
   3  * Copyright © 2012-2013 Collabora, Ltd.
   4  *
   5  * Permission to use, copy, modify, distribute, and sell this software and its
   6  * documentation for any purpose is hereby granted without fee, provided that
   7  * the above copyright notice appear in all copies and that both that copyright
   8  * notice and this permission notice appear in supporting documentation, and
   9  * that the name of the copyright holders not be used in advertising or
  10  * publicity pertaining to distribution of the software without specific,
  11  * written prior permission.  The copyright holders make no representations
  12  * about the suitability of this software for any purpose.  It is provided "as
  13  * is" without express or implied warranty.
  14  *
  15  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  16  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  17  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  18  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  19  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  20  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  21  * OF THIS SOFTWARE.
  22  */
  23
  24 #include "config.h"
  25
  26 #include <stdint.h>
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <stdarg.h>
  30 #include <string.h>
  31 #include <fcntl.h>
  32 #include <unistd.h>
  33 #include <errno.h>
  34 #include <math.h>
  35 #include <assert.h>
  36 #include <time.h>
  37 #include <cairo.h>
  38 #include <sys/mman.h>
  39 #include <sys/epoll.h>
  40 #include <sys/timerfd.h>
  41
  42 #ifdef HAVE_CAIRO_EGL
  43 #include <wayland-egl.h>
  44
  45 #ifdef USE_CAIRO_GLESV2
  46 #include <GLES2/gl2.h>
  47 #include <GLES2/gl2ext.h>
  48 #else
  49 #include <GL/gl.h>
  50 #endif
  51 #include <EGL/egl.h>
  52 #include <EGL/eglext.h>
  53
  54 #include <cairo-gl.h>
  55 #else /* HAVE_CAIRO_EGL */
  56 typedef void *EGLDisplay;
  57 typedef void *EGLConfig;
  58 typedef void *EGLContext;
  59 #define EGL_NO_DISPLAY ((EGLDisplay)0)
  60 #endif /* no HAVE_CAIRO_EGL */
  61
  62 #include <xkbcommon/xkbcommon.h>
  63 #include <wayland-cursor.h>
  64
  65 #include <linux/input.h>
  66 #include <wayland-client.h>
  67 #include "../shared/cairo-util.h"
  68 #include "text-cursor-position-client-protocol.h"
  69 #include "workspaces-client-protocol.h"
  70 #include "../shared/os-compatibility.h"
  71
  72 #include "window.h"
  73
  74 struct shm_pool;
  75
  76 struct global {
  77         uint32_t name;
  78         char *interface;
  79         uint32_t version;
  80         struct wl_list link;
  81 };
  82
  83 struct display {
  84         struct wl_display *display;
  85         struct wl_registry *registry;
  86         struct wl_compositor *compositor;
  87         struct wl_subcompositor *subcompositor;
  88         struct wl_shell *shell;
  89         struct wl_shm *shm;
  90         struct wl_data_device_manager *data_device_manager;
  91         struct text_cursor_position *text_cursor_position;
  92         struct workspace_manager *workspace_manager;
  93         EGLDisplay dpy;
  94         EGLConfig argb_config;
  95         EGLContext argb_ctx;
  96         cairo_device_t *argb_device;
  97         uint32_t serial;
  98
  99         int display_fd;
 100         uint32_t display_fd_events;
 101         struct task display_task;
 102
 103         int epoll_fd;
 104         struct wl_list deferred_list;
 105
 106         int running;
 107
 108         struct wl_list global_list;
 109         struct wl_list window_list;
 110         struct wl_list input_list;
 111         struct wl_list output_list;
 112
 113         struct theme *theme;
 114
 115         struct wl_cursor_theme *cursor_theme;
 116         struct wl_cursor **cursors;
 117
 118         display_output_handler_t output_configure_handler;
 119         display_global_handler_t global_handler;
 120
 121         void *user_data;
 122
 123         struct xkb_context *xkb_context;
 124
 125         uint32_t workspace;
 126         uint32_t workspace_count;
 127
 128         /* A hack to get text extents for tooltips */
 129         cairo_surface_t *dummy_surface;
 130         void *dummy_surface_data;
 131
 132         int has_rgb565;
 133         int seat_version;
 134 };
 135
 136 enum {
 137         TYPE_NONE,
 138         TYPE_TOPLEVEL,
 139         TYPE_FULLSCREEN,
 140         TYPE_MAXIMIZED,
 141         TYPE_TRANSIENT,
 142         TYPE_MENU,
 143         TYPE_CUSTOM
 144 };
 145
 146 struct window_output {
 147         struct output *output;
 148         struct wl_list link;
 149 };
 150
 151 struct toysurface {
 152         /*
 153          * Prepare the surface for drawing. Makes sure there is a surface
 154          * of the right size available for rendering, and returns it.
 155          * dx,dy are the x,y of wl_surface.attach.
 156          * width,height are the new buffer size.
 157          * If flags has SURFACE_HINT_RESIZE set, the user is
 158          * doing continuous resizing.
 159          * Returns the Cairo surface to draw to.
 160          */
 161         cairo_surface_t *(*prepare)(struct toysurface *base, int dx, int dy,
 162                                     int32_t width, int32_t height, uint32_t flags,
 163                                     enum wl_output_transform buffer_transform, int32_t buffer_scale);
 164
 165         /*
 166          * Post the surface to the server, returning the server allocation
 167          * rectangle. The Cairo surface from prepare() must be destroyed
 168          * after calling this.
 169          */
 170         void (*swap)(struct toysurface *base,
 171                      enum wl_output_transform buffer_transform, int32_t buffer_scale,
 172                      struct rectangle *server_allocation);
 173
 174         /*
 175          * Make the toysurface current with the given EGL context.
 176          * Returns 0 on success, and negative of failure.
 177          */
 178         int (*acquire)(struct toysurface *base, EGLContext ctx);
 179
 180         /*
 181          * Release the toysurface from the EGL context, returning control
 182          * to Cairo.
 183          */
 184         void (*release)(struct toysurface *base);
 185
 186         /*
 187          * Destroy the toysurface, including the Cairo surface, any
 188          * backing storage, and the Wayland protocol objects.
 189          */
 190         void (*destroy)(struct toysurface *base);
 191 };
 192
 193 struct surface {
 194         struct window *window;
 195
 196         struct wl_surface *surface;
 197         struct wl_subsurface *subsurface;
 198         int synchronized;
 199         int synchronized_default;
 200         struct toysurface *toysurface;
 201         struct widget *widget;
 202         int redraw_needed;
 203         struct wl_callback *frame_cb;
 204         uint32_t last_time;
 205
 206         struct rectangle allocation;
 207         struct rectangle server_allocation;
 208
 209         struct wl_region *input_region;
 210         struct wl_region *opaque_region;
 211
 212         enum window_buffer_type buffer_type;
 213         enum wl_output_transform buffer_transform;
 214         int32_t buffer_scale;
 215
 216         cairo_surface_t *cairo_surface;
 217
 218         struct wl_list link;
 219 };
 220
 221 struct window {
 222         struct display *display;
 223         struct window *parent;
 224         struct wl_list window_output_list;
 225         char *title;
 226         struct rectangle saved_allocation;
 227         struct rectangle min_allocation;
 228         struct rectangle pending_allocation;
 229         int x, y;
 230         int resize_edges;
 231         int redraw_needed;
 232         int redraw_task_scheduled;
 233         struct task redraw_task;
 234         int resize_needed;
 235         int saved_type;
 236         int type;
 237         int focus_count;
 238
 239         int resizing;
 240         int fullscreen_method;
 241         int configure_requests;
 242
 243         enum preferred_format preferred_format;
 244
 245         window_key_handler_t key_handler;
 246         window_keyboard_focus_handler_t keyboard_focus_handler;
 247         window_data_handler_t data_handler;
 248         window_drop_handler_t drop_handler;
 249         window_close_handler_t close_handler;
 250         window_fullscreen_handler_t fullscreen_handler;
 251         window_output_handler_t output_handler;
 252
 253         struct surface *main_surface;
 254         struct wl_shell_surface *shell_surface;
 255
 256         struct frame *frame;
 257
 258         /* struct surface::link, contains also main_surface */
 259         struct wl_list subsurface_list;
 260
 261         void *user_data;
 262         struct wl_list link;
 263 };
 264
 265 struct widget {
 266         struct window *window;
 267         struct surface *surface;
 268         struct tooltip *tooltip;
 269         struct wl_list child_list;
 270         struct wl_list link;
 271         struct rectangle allocation;
 272         widget_resize_handler_t resize_handler;
 273         widget_redraw_handler_t redraw_handler;
 274         widget_enter_handler_t enter_handler;
 275         widget_leave_handler_t leave_handler;
 276         widget_motion_handler_t motion_handler;
 277         widget_button_handler_t button_handler;
 278         widget_touch_down_handler_t touch_down_handler;
 279         widget_touch_up_handler_t touch_up_handler;
 280         widget_touch_motion_handler_t touch_motion_handler;
 281         widget_touch_frame_handler_t touch_frame_handler;
 282         widget_touch_cancel_handler_t touch_cancel_handler;
 283         widget_axis_handler_t axis_handler;
 284         void *user_data;
 285         int opaque;
 286         int tooltip_count;
 287         int default_cursor;
 288 };
 289
 290 struct touch_point {
 291         int32_t id;
 292         struct widget *widget;
 293         struct wl_list link;
 294 };
 295
 296 struct input {
 297         struct display *display;
 298         struct wl_seat *seat;
 299         struct wl_pointer *pointer;
 300         struct wl_keyboard *keyboard;
 301         struct wl_touch *touch;
 302         struct wl_list touch_point_list;
 303         struct window *pointer_focus;
 304         struct window *keyboard_focus;
 305         struct window *touch_focus;
 306         int current_cursor;
 307         uint32_t cursor_anim_start;
 308         struct wl_callback *cursor_frame_cb;
 309         struct wl_surface *pointer_surface;
 310         uint32_t modifiers;
 311         uint32_t pointer_enter_serial;
 312         uint32_t cursor_serial;
 313         float sx, sy;
 314         struct wl_list link;
 315
 316         struct widget *focus_widget;
 317         struct widget *grab;
 318         uint32_t grab_button;
 319
 320         struct wl_data_device *data_device;
 321         struct data_offer *drag_offer;
 322         struct data_offer *selection_offer;
 323
 324         struct {
 325                 struct xkb_keymap *keymap;
 326                 struct xkb_state *state;
 327                 xkb_mod_mask_t control_mask;
 328                 xkb_mod_mask_t alt_mask;
 329                 xkb_mod_mask_t shift_mask;
 330         } xkb;
 331
 332         struct task repeat_task;
 333         int repeat_timer_fd;
 334         uint32_t repeat_sym;
 335         uint32_t repeat_key;
 336         uint32_t repeat_time;
 337 };
 338
 339 struct output {
 340         struct display *display;
 341         struct wl_output *output;
 342         struct rectangle allocation;
 343         struct wl_list link;
 344         int transform;
 345         int scale;
 346
 347         display_output_handler_t destroy_handler;
 348         void *user_data;
 349 };
 350
 351 enum frame_button_action {
 352         FRAME_BUTTON_NULL = 0,
 353         FRAME_BUTTON_ICON = 1,
 354         FRAME_BUTTON_CLOSE = 2,
 355         FRAME_BUTTON_MINIMIZE = 3,
 356         FRAME_BUTTON_MAXIMIZE = 4,
 357 };
 358
 359 enum frame_button_pointer {
 360         FRAME_BUTTON_DEFAULT = 0,
 361         FRAME_BUTTON_OVER = 1,
 362         FRAME_BUTTON_ACTIVE = 2,
 363 };
 364
 365 enum frame_button_align {
 366         FRAME_BUTTON_RIGHT = 0,
 367         FRAME_BUTTON_LEFT = 1,
 368 };
 369
 370 enum frame_button_decoration {
 371         FRAME_BUTTON_NONE = 0,
 372         FRAME_BUTTON_FANCY = 1,
 373 };
 374
 375 struct frame_button {
 376         struct widget *widget;
 377         struct frame *frame;
 378         cairo_surface_t *icon;
 379         enum frame_button_action type;
 380         enum frame_button_pointer state;
 381         struct wl_list link;    /* buttons_list */
 382         enum frame_button_align align;
 383         enum frame_button_decoration decoration;
 384 };
 385
 386 struct frame {
 387         struct widget *widget;
 388         struct widget *child;
 389         struct wl_list buttons_list;
 390 };
 391
 392 struct menu {
 393         struct window *window;
 394         struct widget *widget;
 395         struct input *input;
 396         const char **entries;
 397         uint32_t time;
 398         int current;
 399         int count;
 400         int release_count;
 401         menu_func_t func;
 402 };
 403
 404 struct tooltip {
 405         struct widget *parent;
 406         struct window *window;
 407         struct widget *widget;
 408         char *entry;
 409         struct task tooltip_task;
 410         int tooltip_fd;
 411         float x, y;
 412 };
 413
 414 struct shm_pool {
 415         struct wl_shm_pool *pool;
 416         size_t size;
 417         size_t used;
 418         void *data;
 419 };
 420
 421 enum {
 422         CURSOR_DEFAULT = 100,
 423         CURSOR_UNSET
 424 };
 425
 426 enum window_location {
 427         WINDOW_INTERIOR = 0,
 428         WINDOW_RESIZING_TOP = 1,
 429         WINDOW_RESIZING_BOTTOM = 2,
 430         WINDOW_RESIZING_LEFT = 4,
 431         WINDOW_RESIZING_TOP_LEFT = 5,
 432         WINDOW_RESIZING_BOTTOM_LEFT = 6,
 433         WINDOW_RESIZING_RIGHT = 8,
 434         WINDOW_RESIZING_TOP_RIGHT = 9,
 435         WINDOW_RESIZING_BOTTOM_RIGHT = 10,
 436         WINDOW_RESIZING_MASK = 15,
 437         WINDOW_EXTERIOR = 16,
 438         WINDOW_TITLEBAR = 17,
 439         WINDOW_CLIENT_AREA = 18,
 440 };
 441
 442 static const cairo_user_data_key_t shm_surface_data_key;
 443
 444 /* #define DEBUG */
 445
 446 #ifdef DEBUG
 447
 448 static void
 449 debug_print(void *proxy, int line, const char *func, const char *fmt, ...)
 450 __attribute__ ((format (printf, 4, 5)));
 451
 452 static void
 453 debug_print(void *proxy, int line, const char *func, const char *fmt, ...)
 454 {
 455         va_list ap;
 456         struct timeval tv;
 457
 458         gettimeofday(&tv, NULL);
 459         fprintf(stderr, "%8ld.%03ld ",
 460                 (long)tv.tv_sec & 0xffff, (long)tv.tv_usec / 1000);
 461
 462         if (proxy)
 463                 fprintf(stderr, "%s@%d ",
 464                         wl_proxy_get_class(proxy), wl_proxy_get_id(proxy));
 465
 466         /*fprintf(stderr, __FILE__ ":%d:%s ", line, func);*/
 467         fprintf(stderr, "%s ", func);
 468
 469         va_start(ap, fmt);
 470         vfprintf(stderr, fmt, ap);
 471         va_end(ap);
 472 }
 473
 474 #define DBG(fmt, ...) \
 475         debug_print(NULL, __LINE__, __func__, fmt, ##__VA_ARGS__)
 476
 477 #define DBG_OBJ(obj, fmt, ...) \
 478         debug_print(obj, __LINE__, __func__, fmt, ##__VA_ARGS__)
 479
 480 #else
 481
 482 #define DBG(...) do {} while (0)
 483 #define DBG_OBJ(...) do {} while (0)
 484
 485 #endif
 486
 487 static void
 488 surface_to_buffer_size (enum wl_output_transform buffer_transform, int32_t buffer_scale, int32_t *width, int32_t *height)
 489 {
 490         int32_t tmp;
 491
 492         switch (buffer_transform) {
 493         case WL_OUTPUT_TRANSFORM_90:
 494         case WL_OUTPUT_TRANSFORM_270:
 495         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
 496         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
 497                 tmp = *width;
 498                 *width = *height;
 499                 *height = tmp;
 500                 break;
 501         default:
 502                 break;
 503         }
 504
 505         *width *= buffer_scale;
 506         *height *= buffer_scale;
 507 }
 508
 509 static void
 510 buffer_to_surface_size (enum wl_output_transform buffer_transform, int32_t buffer_scale, int32_t *width, int32_t *height)
 511 {
 512         int32_t tmp;
 513
 514         switch (buffer_transform) {
 515         case WL_OUTPUT_TRANSFORM_90:
 516         case WL_OUTPUT_TRANSFORM_270:
 517         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
 518         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
 519                 tmp = *width;
 520                 *width = *height;
 521                 *height = tmp;
 522                 break;
 523         default:
 524                 break;
 525         }
 526
 527         *width /= buffer_scale;
 528         *height /= buffer_scale;
 529 }
 530
 531 #ifdef HAVE_CAIRO_EGL
 532
 533 struct egl_window_surface {
 534         struct toysurface base;
 535         cairo_surface_t *cairo_surface;
 536         struct display *display;
 537         struct wl_surface *surface;
 538         struct wl_egl_window *egl_window;
 539         EGLSurface egl_surface;
 540 };
 541
 542 static struct egl_window_surface *
 543 to_egl_window_surface(struct toysurface *base)
 544 {
 545         return container_of(base, struct egl_window_surface, base);
 546 }
 547
 548 static cairo_surface_t *
 549 egl_window_surface_prepare(struct toysurface *base, int dx, int dy,
 550                            int32_t width, int32_t height, uint32_t flags,
 551                            enum wl_output_transform buffer_transform, int32_t buffer_scale)
 552 {
 553         struct egl_window_surface *surface = to_egl_window_surface(base);
 554
 555         surface_to_buffer_size (buffer_transform, buffer_scale, &width, &height);
 556
 557         wl_egl_window_resize(surface->egl_window, width, height, dx, dy);
 558         cairo_gl_surface_set_size(surface->cairo_surface, width, height);
 559
 560         return cairo_surface_reference(surface->cairo_surface);
 561 }
 562
 563 static void
 564 egl_window_surface_swap(struct toysurface *base,
 565                         enum wl_output_transform buffer_transform, int32_t buffer_scale,
 566                         struct rectangle *server_allocation)
 567 {
 568         struct egl_window_surface *surface = to_egl_window_surface(base);
 569
 570         cairo_gl_surface_swapbuffers(surface->cairo_surface);
 571         wl_egl_window_get_attached_size(surface->egl_window,
 572                                         &server_allocation->width,
 573                                         &server_allocation->height);
 574
 575         buffer_to_surface_size (buffer_transform, buffer_scale,
 576                                 &server_allocation->width,
 577                                 &server_allocation->height);
 578 }
 579
 580 static int
 581 egl_window_surface_acquire(struct toysurface *base, EGLContext ctx)
 582 {
 583         struct egl_window_surface *surface = to_egl_window_surface(base);
 584         cairo_device_t *device;
 585
 586         device = cairo_surface_get_device(surface->cairo_surface);
 587         if (!device)
 588                 return -1;
 589
 590         if (!ctx) {
 591                 if (device == surface->display->argb_device)
 592                         ctx = surface->display->argb_ctx;
 593                 else
 594                         assert(0);
 595         }
 596
 597         cairo_device_flush(device);
 598         cairo_device_acquire(device);
 599         if (!eglMakeCurrent(surface->display->dpy, surface->egl_surface,
 600                             surface->egl_surface, ctx))
 601                 fprintf(stderr, "failed to make surface current\n");
 602
 603         return 0;
 604 }
 605
 606 static void
 607 egl_window_surface_release(struct toysurface *base)
 608 {
 609         struct egl_window_surface *surface = to_egl_window_surface(base);
 610         cairo_device_t *device;
 611
 612         device = cairo_surface_get_device(surface->cairo_surface);
 613         if (!device)
 614                 return;
 615
 616         if (!eglMakeCurrent(surface->display->dpy, NULL, NULL,
 617                             surface->display->argb_ctx))
 618                 fprintf(stderr, "failed to make context current\n");
 619
 620         cairo_device_release(device);
 621 }
 622
 623 static void
 624 egl_window_surface_destroy(struct toysurface *base)
 625 {
 626         struct egl_window_surface *surface = to_egl_window_surface(base);
 627         struct display *d = surface->display;
 628
 629         cairo_surface_destroy(surface->cairo_surface);
 630         eglDestroySurface(d->dpy, surface->egl_surface);
 631         wl_egl_window_destroy(surface->egl_window);
 632         surface->surface = NULL;
 633
 634         free(surface);
 635 }
 636
 637 static struct toysurface *
 638 egl_window_surface_create(struct display *display,
 639                           struct wl_surface *wl_surface,
 640                           uint32_t flags,
 641                           struct rectangle *rectangle)
 642 {
 643         struct egl_window_surface *surface;
 644
 645         if (display->dpy == EGL_NO_DISPLAY)
 646                 return NULL;
 647
 648         surface = calloc(1, sizeof *surface);
 649         if (!surface)
 650                 return NULL;
 651
 652         surface->base.prepare = egl_window_surface_prepare;
 653         surface->base.swap = egl_window_surface_swap;
 654         surface->base.acquire = egl_window_surface_acquire;
 655         surface->base.release = egl_window_surface_release;
 656         surface->base.destroy = egl_window_surface_destroy;
 657
 658         surface->display = display;
 659         surface->surface = wl_surface;
 660
 661         surface->egl_window = wl_egl_window_create(surface->surface,
 662                                                    rectangle->width,
 663                                                    rectangle->height);
 664
 665         surface->egl_surface = eglCreateWindowSurface(display->dpy,
 666                                                       display->argb_config,
 667                                                       surface->egl_window,
 668                                                       NULL);
 669
 670         surface->cairo_surface =
 671                 cairo_gl_surface_create_for_egl(display->argb_device,
 672                                                 surface->egl_surface,
 673                                                 rectangle->width,
 674                                                 rectangle->height);
 675
 676         return &surface->base;
 677 }
 678
 679 #else
 680
 681 static struct toysurface *
 682 egl_window_surface_create(struct display *display,
 683                           struct wl_surface *wl_surface,
 684                           uint32_t flags,
 685                           struct rectangle *rectangle)
 686 {
 687         return NULL;
 688 }
 689
 690 #endif
 691
 692 struct shm_surface_data {
 693         struct wl_buffer *buffer;
 694         struct shm_pool *pool;
 695 };
 696
 697 struct wl_buffer *
 698 display_get_buffer_for_surface(struct display *display,
 699                                cairo_surface_t *surface)
 700 {
 701         struct shm_surface_data *data;
 702
 703         data = cairo_surface_get_user_data(surface, &shm_surface_data_key);
 704
 705         return data->buffer;
 706 }
 707
 708 static void
 709 shm_pool_destroy(struct shm_pool *pool);
 710
 711 static void
 712 shm_surface_data_destroy(void *p)
 713 {
 714         struct shm_surface_data *data = p;
 715
 716         wl_buffer_destroy(data->buffer);
 717         if (data->pool)
 718                 shm_pool_destroy(data->pool);
 719
 720         free(data);
 721 }
 722
 723 static struct wl_shm_pool *
 724 make_shm_pool(struct display *display, int size, void **data)
 725 {
 726         struct wl_shm_pool *pool;
 727         int fd;
 728
 729         fd = os_create_anonymous_file(size);
 730         if (fd < 0) {
 731                 fprintf(stderr, "creating a buffer file for %d B failed: %m\n",
 732                         size);
 733                 return NULL;
 734         }
 735
 736         *data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 737         if (*data == MAP_FAILED) {
 738                 fprintf(stderr, "mmap failed: %m\n");
 739                 close(fd);
 740                 return NULL;
 741         }
 742
 743         pool = wl_shm_create_pool(display->shm, fd, size);
 744
 745         close(fd);
 746
 747         return pool;
 748 }
 749
 750 static struct shm_pool *
 751 shm_pool_create(struct display *display, size_t size)
 752 {
 753         struct shm_pool *pool = malloc(sizeof *pool);
 754
 755         if (!pool)
 756                 return NULL;
 757
 758         pool->pool = make_shm_pool(display, size, &pool->data);
 759         if (!pool->pool) {
 760                 free(pool);
 761                 return NULL;
 762         }
 763
 764         pool->size = size;
 765         pool->used = 0;
 766
 767         return pool;
 768 }
 769
 770 static void *
 771 shm_pool_allocate(struct shm_pool *pool, size_t size, int *offset)
 772 {
 773         if (pool->used + size > pool->size)
 774                 return NULL;
 775
 776         *offset = pool->used;
 777         pool->used += size;
 778
 779         return (char *) pool->data + *offset;
 780 }
 781
 782 /* destroy the pool. this does not unmap the memory though */
 783 static void
 784 shm_pool_destroy(struct shm_pool *pool)
 785 {
 786         munmap(pool->data, pool->size);
 787         wl_shm_pool_destroy(pool->pool);
 788         free(pool);
 789 }
 790
 791 /* Start allocating from the beginning of the pool again */
 792 static void
 793 shm_pool_reset(struct shm_pool *pool)
 794 {
 795         pool->used = 0;
 796 }
 797
 798 static int
 799 data_length_for_shm_surface(struct rectangle *rect)
 800 {
 801         int stride;
 802
 803         stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32,
 804                                                 rect->width);
 805         return stride * rect->height;
 806 }
 807
 808 static cairo_surface_t *
 809 display_create_shm_surface_from_pool(struct display *display,
 810                                      struct rectangle *rectangle,
 811                                      uint32_t flags, struct shm_pool *pool)
 812 {
 813         struct shm_surface_data *data;
 814         uint32_t format;
 815         cairo_surface_t *surface;
 816         cairo_format_t cairo_format;
 817         int stride, length, offset;
 818         void *map;
 819
 820         data = malloc(sizeof *data);
 821         if (data == NULL)
 822                 return NULL;
 823
 824         if (flags & SURFACE_HINT_RGB565 && display->has_rgb565)
 825                 cairo_format = CAIRO_FORMAT_RGB16_565;
 826         else
 827                 cairo_format = CAIRO_FORMAT_ARGB32;
 828
 829         stride = cairo_format_stride_for_width (cairo_format, rectangle->width);
 830         length = stride * rectangle->height;
 831         data->pool = NULL;
 832         map = shm_pool_allocate(pool, length, &offset);
 833
 834         if (!map) {
 835                 free(data);
 836                 return NULL;
 837         }
 838
 839         surface = cairo_image_surface_create_for_data (map,
 840                                                        cairo_format,
 841                                                        rectangle->width,
 842                                                        rectangle->height,
 843                                                        stride);
 844
 845         cairo_surface_set_user_data(surface, &shm_surface_data_key,
 846                                     data, shm_surface_data_destroy);
 847
 848         if (flags & SURFACE_HINT_RGB565 && display->has_rgb565)
 849                 format = WL_SHM_FORMAT_RGB565;
 850         else {
 851                 if (flags & SURFACE_OPAQUE)
 852                         format = WL_SHM_FORMAT_XRGB8888;
 853                 else
 854                         format = WL_SHM_FORMAT_ARGB8888;
 855         }
 856
 857         data->buffer = wl_shm_pool_create_buffer(pool->pool, offset,
 858                                                  rectangle->width,
 859                                                  rectangle->height,
 860                                                  stride, format);
 861
 862         return surface;
 863 }
 864
 865 static cairo_surface_t *
 866 display_create_shm_surface(struct display *display,
 867                            struct rectangle *rectangle, uint32_t flags,
 868                            struct shm_pool *alternate_pool,
 869                            struct shm_surface_data **data_ret)
 870 {
 871         struct shm_surface_data *data;
 872         struct shm_pool *pool;
 873         cairo_surface_t *surface;
 874
 875         if (alternate_pool) {
 876                 shm_pool_reset(alternate_pool);
 877                 surface = display_create_shm_surface_from_pool(display,
 878                                                                rectangle,
 879                                                                flags,
 880                                                                alternate_pool);
 881                 if (surface) {
 882                         data = cairo_surface_get_user_data(surface,
 883                                                            &shm_surface_data_key);
 884                         goto out;
 885                 }
 886         }
 887
 888         pool = shm_pool_create(display,
 889                                data_length_for_shm_surface(rectangle));
 890         if (!pool)
 891                 return NULL;
 892
 893         surface =
 894                 display_create_shm_surface_from_pool(display, rectangle,
 895                                                      flags, pool);
 896
 897         if (!surface) {
 898                 shm_pool_destroy(pool);
 899                 return NULL;
 900         }
 901
 902         /* make sure we destroy the pool when the surface is destroyed */
 903         data = cairo_surface_get_user_data(surface, &shm_surface_data_key);
 904         data->pool = pool;
 905
 906 out:
 907         if (data_ret)
 908                 *data_ret = data;
 909
 910         return surface;
 911 }
 912
 913 static int
 914 check_size(struct rectangle *rect)
 915 {
 916         if (rect->width && rect->height)
 917                 return 0;
 918
 919         fprintf(stderr, "tried to create surface of "
 920                 "width: %d, height: %d\n", rect->width, rect->height);
 921         return -1;
 922 }
 923
 924 cairo_surface_t *
 925 display_create_surface(struct display *display,
 926                        struct wl_surface *surface,
 927                        struct rectangle *rectangle,
 928                        uint32_t flags)
 929 {
 930         if (check_size(rectangle) < 0)
 931                 return NULL;
 932
 933         assert(flags & SURFACE_SHM);
 934         return display_create_shm_surface(display, rectangle, flags,
 935                                           NULL, NULL);
 936 }
 937
 938 struct shm_surface_leaf {
 939         cairo_surface_t *cairo_surface;
 940         /* 'data' is automatically destroyed, when 'cairo_surface' is */
 941         struct shm_surface_data *data;
 942
 943         struct shm_pool *resize_pool;
 944         int busy;
 945 };
 946
 947 static void
 948 shm_surface_leaf_release(struct shm_surface_leaf *leaf)
 949 {
 950         if (leaf->cairo_surface)
 951                 cairo_surface_destroy(leaf->cairo_surface);
 952         /* leaf->data already destroyed via cairo private */
 953
 954         if (leaf->resize_pool)
 955                 shm_pool_destroy(leaf->resize_pool);
 956
 957         memset(leaf, 0, sizeof *leaf);
 958 }
 959
 960 #define MAX_LEAVES 3
 961
 962 struct shm_surface {
 963         struct toysurface base;
 964         struct display *display;
 965         struct wl_surface *surface;
 966         uint32_t flags;
 967         int dx, dy;
 968
 969         struct shm_surface_leaf leaf[MAX_LEAVES];
 970         struct shm_surface_leaf *current;
 971 };
 972
 973 static struct shm_surface *
 974 to_shm_surface(struct toysurface *base)
 975 {
 976         return container_of(base, struct shm_surface, base);
 977 }
 978
 979 static void
 980 shm_surface_buffer_state_debug(struct shm_surface *surface, const char *msg)
 981 {
 982 #ifdef DEBUG
 983         struct shm_surface_leaf *leaf;
 984         char bufs[MAX_LEAVES + 1];
 985         int i;
 986
 987         for (i = 0; i < MAX_LEAVES; i++) {
 988                 leaf = &surface->leaf[i];
 989
 990                 if (leaf->busy)
 991                         bufs[i] = 'b';
 992                 else if (leaf->cairo_surface)
 993                         bufs[i] = 'a';
 994                 else
 995                         bufs[i] = ' ';
 996         }
 997
 998         bufs[MAX_LEAVES] = '\0';
 999         DBG_OBJ(surface->surface, "%s, leaves [%s]\n", msg, bufs);
1000 #endif
1001 }
1002
1003 static void
1004 shm_surface_buffer_release(void *data, struct wl_buffer *buffer)
1005 {
1006         struct shm_surface *surface = data;
1007         struct shm_surface_leaf *leaf;
1008         int i;
1009         int free_found;
1010
1011         shm_surface_buffer_state_debug(surface, "buffer_release before");
1012
1013         for (i = 0; i < MAX_LEAVES; i++) {
1014                 leaf = &surface->leaf[i];
1015                 if (leaf->data && leaf->data->buffer == buffer) {
1016                         leaf->busy = 0;
1017                         break;
1018                 }
1019         }
1020         assert(i < MAX_LEAVES && "unknown buffer released");
1021
1022         /* Leave one free leaf with storage, release others */
1023         free_found = 0;
1024         for (i = 0; i < MAX_LEAVES; i++) {
1025                 leaf = &surface->leaf[i];
1026
1027                 if (!leaf->cairo_surface || leaf->busy)
1028                         continue;
1029
1030                 if (!free_found)
1031                         free_found = 1;
1032                 else
1033                         shm_surface_leaf_release(leaf);
1034         }
1035
1036         shm_surface_buffer_state_debug(surface, "buffer_release  after");
1037 }
1038
1039 static const struct wl_buffer_listener shm_surface_buffer_listener = {
1040         shm_surface_buffer_release
1041 };
1042
1043 static cairo_surface_t *
1044 shm_surface_prepare(struct toysurface *base, int dx, int dy,
1045                     int32_t width, int32_t height, uint32_t flags,
1046                     enum wl_output_transform buffer_transform, int32_t buffer_scale)
1047 {
1048         int resize_hint = !!(flags & SURFACE_HINT_RESIZE);
1049         struct shm_surface *surface = to_shm_surface(base);
1050         struct rectangle rect = { 0};
1051         struct shm_surface_leaf *leaf = NULL;
1052         int i;
1053
1054         surface->dx = dx;
1055         surface->dy = dy;
1056
1057         /* pick a free buffer, preferrably one that already has storage */
1058         for (i = 0; i < MAX_LEAVES; i++) {
1059                 if (surface->leaf[i].busy)
1060                         continue;
1061
1062                 if (!leaf || surface->leaf[i].cairo_surface)
1063                         leaf = &surface->leaf[i];
1064         }
1065         DBG_OBJ(surface->surface, "pick leaf %d\n",
1066                 (int)(leaf - &surface->leaf[0]));
1067
1068         if (!leaf) {
1069                 fprintf(stderr, "%s: all buffers are held by the server.\n",
1070                         __func__);
1071                 exit(1);
1072                 return NULL;
1073         }
1074
1075         if (!resize_hint && leaf->resize_pool) {
1076                 cairo_surface_destroy(leaf->cairo_surface);
1077                 leaf->cairo_surface = NULL;
1078                 shm_pool_destroy(leaf->resize_pool);
1079                 leaf->resize_pool = NULL;
1080         }
1081
1082         surface_to_buffer_size (buffer_transform, buffer_scale, &width, &height);
1083
1084         if (leaf->cairo_surface &&
1085             cairo_image_surface_get_width(leaf->cairo_surface) == width &&
1086             cairo_image_surface_get_height(leaf->cairo_surface) == height)
1087                 goto out;
1088
1089         if (leaf->cairo_surface)
1090                 cairo_surface_destroy(leaf->cairo_surface);
1091
1092 #ifdef USE_RESIZE_POOL
1093         if (resize_hint && !leaf->resize_pool) {
1094                 /* Create a big pool to allocate from, while continuously
1095                  * resizing. Mmapping a new pool in the server
1096                  * is relatively expensive, so reusing a pool performs
1097                  * better, but may temporarily reserve unneeded memory.
1098                  */
1099                 /* We should probably base this number on the output size. */
1100                 leaf->resize_pool = shm_pool_create(surface->display,
1101                                                     6 * 1024 * 1024);
1102         }
1103 #endif
1104
1105         rect.width = width;
1106         rect.height = height;
1107
1108         leaf->cairo_surface =
1109                 display_create_shm_surface(surface->display, &rect,
1110                                            surface->flags,
1111                                            leaf->resize_pool,
1112                                            &leaf->data);
1113         wl_buffer_add_listener(leaf->data->buffer,
1114                                &shm_surface_buffer_listener, surface);
1115
1116 out:
1117         surface->current = leaf;
1118
1119         return cairo_surface_reference(leaf->cairo_surface);
1120 }
1121
1122 static void
1123 shm_surface_swap(struct toysurface *base,
1124                  enum wl_output_transform buffer_transform, int32_t buffer_scale,
1125                  struct rectangle *server_allocation)
1126 {
1127         struct shm_surface *surface = to_shm_surface(base);
1128         struct shm_surface_leaf *leaf = surface->current;
1129
1130         server_allocation->width =
1131                 cairo_image_surface_get_width(leaf->cairo_surface);
1132         server_allocation->height =
1133                 cairo_image_surface_get_height(leaf->cairo_surface);
1134
1135         buffer_to_surface_size (buffer_transform, buffer_scale,
1136                                 &server_allocation->width,
1137                                 &server_allocation->height);
1138
1139         wl_surface_attach(surface->surface, leaf->data->buffer,
1140                           surface->dx, surface->dy);
1141         wl_surface_damage(surface->surface, 0, 0,
1142                           server_allocation->width, server_allocation->height);
1143         wl_surface_commit(surface->surface);
1144
1145         DBG_OBJ(surface->surface, "leaf %d busy\n",
1146                 (int)(leaf - &surface->leaf[0]));
1147
1148         leaf->busy = 1;
1149         surface->current = NULL;
1150 }
1151
1152 static int
1153 shm_surface_acquire(struct toysurface *base, EGLContext ctx)
1154 {
1155         return -1;
1156 }
1157
1158 static void
1159 shm_surface_release(struct toysurface *base)
1160 {
1161 }
1162
1163 static void
1164 shm_surface_destroy(struct toysurface *base)
1165 {
1166         struct shm_surface *surface = to_shm_surface(base);
1167         int i;
1168
1169         for (i = 0; i < MAX_LEAVES; i++)
1170                 shm_surface_leaf_release(&surface->leaf[i]);
1171
1172         free(surface);
1173 }
1174
1175 static struct toysurface *
1176 shm_surface_create(struct display *display, struct wl_surface *wl_surface,
1177                    uint32_t flags, struct rectangle *rectangle)
1178 {
1179         struct shm_surface *surface;
1180         DBG_OBJ(wl_surface, "\n");
1181
1182         surface = xmalloc(sizeof *surface);
1183         memset(surface, 0, sizeof *surface);
1184
1185         if (!surface)
1186                 return NULL;
1187
1188         surface->base.prepare = shm_surface_prepare;
1189         surface->base.swap = shm_surface_swap;
1190         surface->base.acquire = shm_surface_acquire;
1191         surface->base.release = shm_surface_release;
1192         surface->base.destroy = shm_surface_destroy;
1193
1194         surface->display = display;
1195         surface->surface = wl_surface;
1196         surface->flags = flags;
1197
1198         return &surface->base;
1199 }
1200
1201 /*
1202  * The following correspondences between file names and cursors was copied
1203  * from: https://bugs.kde.org/attachment.cgi?id=67313
1204  */
1205
1206 static const char *bottom_left_corners[] = {
1207         "bottom_left_corner",
1208         "sw-resize",
1209         "size_bdiag"
1210 };
1211
1212 static const char *bottom_right_corners[] = {
1213         "bottom_right_corner",
1214         "se-resize",
1215         "size_fdiag"
1216 };
1217
1218 static const char *bottom_sides[] = {
1219         "bottom_side",
1220         "s-resize",
1221         "size_ver"
1222 };
1223
1224 static const char *grabbings[] = {
1225         "grabbing",
1226         "closedhand",
1227         "208530c400c041818281048008011002"
1228 };
1229
1230 static const char *left_ptrs[] = {
1231         "left_ptr",
1232         "default",
1233         "top_left_arrow",
1234         "left-arrow"
1235 };
1236
1237 static const char *left_sides[] = {
1238         "left_side",
1239         "w-resize",
1240         "size_hor"
1241 };
1242
1243 static const char *right_sides[] = {
1244         "right_side",
1245         "e-resize",
1246         "size_hor"
1247 };
1248
1249 static const char *top_left_corners[] = {
1250         "top_left_corner",
1251         "nw-resize",
1252         "size_fdiag"
1253 };
1254
1255 static const char *top_right_corners[] = {
1256         "top_right_corner",
1257         "ne-resize",
1258         "size_bdiag"
1259 };
1260
1261 static const char *top_sides[] = {
1262         "top_side",
1263         "n-resize",
1264         "size_ver"
1265 };
1266
1267 static const char *xterms[] = {
1268         "xterm",
1269         "ibeam",
1270         "text"
1271 };
1272
1273 static const char *hand1s[] = {
1274         "hand1",
1275         "pointer",
1276         "pointing_hand",
1277         "e29285e634086352946a0e7090d73106"
1278 };
1279
1280 static const char *watches[] = {
1281         "watch",
1282         "wait",
1283         "0426c94ea35c87780ff01dc239897213"
1284 };
1285
1286 struct cursor_alternatives {
1287         const char **names;
1288         size_t count;
1289 };
1290
1291 static const struct cursor_alternatives cursors[] = {
1292         {bottom_left_corners, ARRAY_LENGTH(bottom_left_corners)},
1293         {bottom_right_corners, ARRAY_LENGTH(bottom_right_corners)},
1294         {bottom_sides, ARRAY_LENGTH(bottom_sides)},
1295         {grabbings, ARRAY_LENGTH(grabbings)},
1296         {left_ptrs, ARRAY_LENGTH(left_ptrs)},
1297         {left_sides, ARRAY_LENGTH(left_sides)},
1298         {right_sides, ARRAY_LENGTH(right_sides)},
1299         {top_left_corners, ARRAY_LENGTH(top_left_corners)},
1300         {top_right_corners, ARRAY_LENGTH(top_right_corners)},
1301         {top_sides, ARRAY_LENGTH(top_sides)},
1302         {xterms, ARRAY_LENGTH(xterms)},
1303         {hand1s, ARRAY_LENGTH(hand1s)},
1304         {watches, ARRAY_LENGTH(watches)},
1305 };
1306
1307 static void
1308 create_cursors(struct display *display)
1309 {
1310         int config_fd;
1311         char *theme = NULL;
1312         unsigned int size = 32;
1313         unsigned int i, j;
1314         struct wl_cursor *cursor;
1315         struct config_key shell_keys[] = {
1316                 { "cursor-theme", CONFIG_KEY_STRING, &theme },
1317                 { "cursor-size", CONFIG_KEY_UNSIGNED_INTEGER, &size },
1318         };
1319         struct config_section cs[] = {
1320                 { "shell", shell_keys, ARRAY_LENGTH(shell_keys), NULL },
1321         };
1322
1323         config_fd = open_config_file("weston.ini");
1324         parse_config_file(config_fd, cs, ARRAY_LENGTH(cs), NULL);
1325         close(config_fd);
1326
1327         display->cursor_theme = wl_cursor_theme_load(theme, size, display->shm);
1328         display->cursors =
1329                 xmalloc(ARRAY_LENGTH(cursors) * sizeof display->cursors[0]);
1330
1331         for (i = 0; i < ARRAY_LENGTH(cursors); i++) {
1332                 cursor = NULL;
1333                 for (j = 0; !cursor && j < cursors[i].count; ++j)
1334                         cursor = wl_cursor_theme_get_cursor(
1335                             display->cursor_theme, cursors[i].names[j]);
1336
1337                 if (!cursor)
1338                         fprintf(stderr, "could not load cursor '%s'\n",
1339                                 cursors[i].names[0]);
1340
1341                 display->cursors[i] = cursor;
1342         }
1343 }
1344
1345 static void
1346 destroy_cursors(struct display *display)
1347 {
1348         wl_cursor_theme_destroy(display->cursor_theme);
1349         free(display->cursors);
1350 }
1351
1352 struct wl_cursor_image *
1353 display_get_pointer_image(struct display *display, int pointer)
1354 {
1355         struct wl_cursor *cursor = display->cursors[pointer];
1356
1357         return cursor ? cursor->images[0] : NULL;
1358 }
1359
1360 static void
1361 surface_flush(struct surface *surface)
1362 {
1363         if (!surface->cairo_surface)
1364                 return;
1365
1366         if (surface->opaque_region) {
1367                 wl_surface_set_opaque_region(surface->surface,
1368                                              surface->opaque_region);
1369                 wl_region_destroy(surface->opaque_region);
1370                 surface->opaque_region = NULL;
1371         }
1372
1373         if (surface->input_region) {
1374                 wl_surface_set_input_region(surface->surface,
1375                                             surface->input_region);
1376                 wl_region_destroy(surface->input_region);
1377                 surface->input_region = NULL;
1378         }
1379
1380         surface->toysurface->swap(surface->toysurface,
1381                                   surface->buffer_transform, surface->buffer_scale,
1382                                   &surface->server_allocation);
1383
1384         cairo_surface_destroy(surface->cairo_surface);
1385         surface->cairo_surface = NULL;
1386 }
1387
1388 int
1389 window_has_focus(struct window *window)
1390 {
1391         return window->focus_count > 0;
1392 }
1393
1394 static void
1395 window_flush(struct window *window)
1396 {
1397         struct surface *surface;
1398
1399         if (window->type == TYPE_NONE) {
1400                 window->type = TYPE_TOPLEVEL;
1401                 if (window->shell_surface)
1402                         wl_shell_surface_set_toplevel(window->shell_surface);
1403         }
1404
1405         wl_list_for_each(surface, &window->subsurface_list, link) {
1406                 if (surface == window->main_surface)
1407                         continue;
1408
1409                 surface_flush(surface);
1410         }
1411
1412         surface_flush(window->main_surface);
1413 }
1414
1415 struct display *
1416 window_get_display(struct window *window)
1417 {
1418         return window->display;
1419 }
1420
1421 static void
1422 surface_create_surface(struct surface *surface, int dx, int dy, uint32_t flags)
1423 {
1424         struct display *display = surface->window->display;
1425         struct rectangle allocation = surface->allocation;
1426
1427         if (!surface->toysurface && display->dpy &&
1428             surface->buffer_type == WINDOW_BUFFER_TYPE_EGL_WINDOW) {
1429                 surface->toysurface =
1430                         egl_window_surface_create(display,
1431                                                   surface->surface,
1432                                                   flags,
1433                                                   &allocation);
1434         }
1435
1436         if (!surface->toysurface)
1437                 surface->toysurface = shm_surface_create(display,
1438                                                          surface->surface,
1439                                                          flags, &allocation);
1440
1441         surface->cairo_surface = surface->toysurface->prepare(
1442                 surface->toysurface, dx, dy,
1443                 allocation.width, allocation.height, flags,
1444                 surface->buffer_transform, surface->buffer_scale);
1445 }
1446
1447 static void
1448 window_create_main_surface(struct window *window)
1449 {
1450         struct surface *surface = window->main_surface;
1451         uint32_t flags = 0;
1452         int dx = 0;
1453         int dy = 0;
1454
1455         if (window->resizing)
1456                 flags |= SURFACE_HINT_RESIZE;
1457
1458         if (window->preferred_format == WINDOW_PREFERRED_FORMAT_RGB565)
1459                 flags |= SURFACE_HINT_RGB565;
1460
1461         if (window->resize_edges & WINDOW_RESIZING_LEFT)
1462                 dx = surface->server_allocation.width -
1463                         surface->allocation.width;
1464
1465         if (window->resize_edges & WINDOW_RESIZING_TOP)
1466                 dy = surface->server_allocation.height -
1467                         surface->allocation.height;
1468
1469         window->resize_edges = 0;
1470
1471         surface_create_surface(surface, dx, dy, flags);
1472 }
1473
1474 int
1475 window_get_buffer_transform(struct window *window)
1476 {
1477         return window->main_surface->buffer_transform;
1478 }
1479
1480 void
1481 window_set_buffer_transform(struct window *window,
1482                             enum wl_output_transform transform)
1483 {
1484         window->main_surface->buffer_transform = transform;
1485         wl_surface_set_buffer_transform(window->main_surface->surface,
1486                                         transform);
1487 }
1488
1489 void
1490 window_set_buffer_scale(struct window *window,
1491                         int32_t scale)
1492 {
1493         window->main_surface->buffer_scale = scale;
1494         wl_surface_set_buffer_scale(window->main_surface->surface,
1495                                     scale);
1496 }
1497
1498 uint32_t
1499 window_get_buffer_scale(struct window *window)
1500 {
1501         return window->main_surface->buffer_scale;
1502 }
1503
1504 uint32_t
1505 window_get_output_scale(struct window *window)
1506 {
1507         struct window_output *window_output;
1508         struct window_output *window_output_tmp;
1509         int scale = 1;
1510
1511         wl_list_for_each_safe(window_output, window_output_tmp,
1512                               &window->window_output_list, link) {
1513                 if (window_output->output->scale > scale)
1514                         scale = window_output->output->scale;
1515         }
1516
1517         return scale;
1518 }
1519
1520 static void frame_destroy(struct frame *frame);
1521
1522 static void
1523 surface_destroy(struct surface *surface)
1524 {
1525         if (surface->frame_cb)
1526                 wl_callback_destroy(surface->frame_cb);
1527
1528         if (surface->input_region)
1529                 wl_region_destroy(surface->input_region);
1530
1531         if (surface->opaque_region)
1532                 wl_region_destroy(surface->opaque_region);
1533
1534         if (surface->subsurface)
1535                 wl_subsurface_destroy(surface->subsurface);
1536
1537         wl_surface_destroy(surface->surface);
1538
1539         if (surface->toysurface)
1540                 surface->toysurface->destroy(surface->toysurface);
1541
1542         wl_list_remove(&surface->link);
1543         free(surface);
1544 }
1545
1546 void
1547 window_destroy(struct window *window)
1548 {
1549         struct display *display = window->display;
1550         struct input *input;
1551         struct window_output *window_output;
1552         struct window_output *window_output_tmp;
1553
1554         wl_list_remove(&window->redraw_task.link);
1555
1556         wl_list_for_each(input, &display->input_list, link) {
1557                 if (input->touch_focus == window)
1558                         input->touch_focus = NULL;
1559                 if (input->pointer_focus == window)
1560                         input->pointer_focus = NULL;
1561                 if (input->keyboard_focus == window)
1562                         input->keyboard_focus = NULL;
1563                 if (input->focus_widget &&
1564                     input->focus_widget->window == window)
1565                         input->focus_widget = NULL;
1566         }
1567
1568         wl_list_for_each_safe(window_output, window_output_tmp,
1569                               &window->window_output_list, link) {
1570                 free (window_output);
1571         }
1572
1573         if (window->frame)
1574                 frame_destroy(window->frame);
1575
1576         if (window->shell_surface)
1577                 wl_shell_surface_destroy(window->shell_surface);
1578
1579         surface_destroy(window->main_surface);
1580
1581         wl_list_remove(&window->link);
1582
1583         free(window->title);
1584         free(window);
1585 }
1586
1587 static struct widget *
1588 widget_find_widget(struct widget *widget, int32_t x, int32_t y)
1589 {
1590         struct widget *child, *target;
1591
1592         wl_list_for_each(child, &widget->child_list, link) {
1593                 target = widget_find_widget(child, x, y);
1594                 if (target)
1595                         return target;
1596         }
1597
1598         if (widget->allocation.x <= x &&
1599             x < widget->allocation.x + widget->allocation.width &&
1600             widget->allocation.y <= y &&
1601             y < widget->allocation.y + widget->allocation.height) {
1602                 return widget;
1603         }
1604
1605         return NULL;
1606 }
1607
1608 static struct widget *
1609 window_find_widget(struct window *window, int32_t x, int32_t y)
1610 {
1611         struct surface *surface;
1612         struct widget *widget;
1613
1614         wl_list_for_each(surface, &window->subsurface_list, link) {
1615                 widget = widget_find_widget(surface->widget, x, y);
1616                 if (widget)
1617                         return widget;
1618         }
1619
1620         return NULL;
1621 }
1622
1623 static struct widget *
1624 widget_create(struct window *window, struct surface *surface, void *data)
1625 {
1626         struct widget *widget;
1627
1628         widget = xzalloc(sizeof *widget);
1629         widget->window = window;
1630         widget->surface = surface;
1631         widget->user_data = data;
1632         widget->allocation = surface->allocation;
1633         wl_list_init(&widget->child_list);
1634         widget->opaque = 0;
1635         widget->tooltip = NULL;
1636         widget->tooltip_count = 0;
1637         widget->default_cursor = CURSOR_LEFT_PTR;
1638
1639         return widget;
1640 }
1641
1642 struct widget *
1643 window_add_widget(struct window *window, void *data)
1644 {
1645         struct widget *widget;
1646
1647         widget = widget_create(window, window->main_surface, data);
1648         wl_list_init(&widget->link);
1649         window->main_surface->widget = widget;
1650
1651         return widget;
1652 }
1653
1654 struct widget *
1655 widget_add_widget(struct widget *parent, void *data)
1656 {
1657         struct widget *widget;
1658
1659         widget = widget_create(parent->window, parent->surface, data);
1660         wl_list_insert(parent->child_list.prev, &widget->link);
1661
1662         return widget;
1663 }
1664
1665 void
1666 widget_destroy(struct widget *widget)
1667 {
1668         struct display *display = widget->window->display;
1669         struct surface *surface = widget->surface;
1670         struct input *input;
1671
1672         /* Destroy the sub-surface along with the root widget */
1673         if (surface->widget == widget && surface->subsurface)
1674                 surface_destroy(widget->surface);
1675
1676         if (widget->tooltip) {
1677                 free(widget->tooltip);
1678                 widget->tooltip = NULL;
1679         }
1680
1681         wl_list_for_each(input, &display->input_list, link) {
1682                 if (input->focus_widget == widget)
1683                         input->focus_widget = NULL;
1684         }
1685
1686         wl_list_remove(&widget->link);
1687         free(widget);
1688 }
1689
1690 void
1691 widget_set_default_cursor(struct widget *widget, int cursor)
1692 {
1693         widget->default_cursor = cursor;
1694 }
1695
1696 void
1697 widget_get_allocation(struct widget *widget, struct rectangle *allocation)
1698 {
1699         *allocation = widget->allocation;
1700 }
1701
1702 void
1703 widget_set_size(struct widget *widget, int32_t width, int32_t height)
1704 {
1705         widget->allocation.width = width;
1706         widget->allocation.height = height;
1707 }
1708
1709 void
1710 widget_set_allocation(struct widget *widget,
1711                       int32_t x, int32_t y, int32_t width, int32_t height)
1712 {
1713         widget->allocation.x = x;
1714         widget->allocation.y = y;
1715         widget_set_size(widget, width, height);
1716 }
1717
1718 void
1719 widget_set_transparent(struct widget *widget, int transparent)
1720 {
1721         widget->opaque = !transparent;
1722 }
1723
1724 void *
1725 widget_get_user_data(struct widget *widget)
1726 {
1727         return widget->user_data;
1728 }
1729
1730 static cairo_surface_t *
1731 widget_get_cairo_surface(struct widget *widget)
1732 {
1733         struct surface *surface = widget->surface;
1734         struct window *window = widget->window;
1735
1736         if (!surface->cairo_surface) {
1737                 if (surface == window->main_surface)
1738                         window_create_main_surface(window);
1739                 else
1740                         surface_create_surface(surface, 0, 0, 0);
1741         }
1742
1743         return surface->cairo_surface;
1744 }
1745
1746 static void
1747 widget_cairo_update_transform(struct widget *widget, cairo_t *cr)
1748 {
1749         struct surface *surface = widget->surface;
1750         double angle;
1751         cairo_matrix_t m;
1752         enum wl_output_transform transform;
1753         int surface_width, surface_height;
1754         int translate_x, translate_y;
1755         int32_t scale;
1756
1757         surface_width = surface->allocation.width;
1758         surface_height = surface->allocation.height;
1759
1760         transform = surface->buffer_transform;
1761         scale = surface->buffer_scale;
1762
1763         switch (transform) {
1764         case WL_OUTPUT_TRANSFORM_FLIPPED:
1765         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
1766         case WL_OUTPUT_TRANSFORM_FLIPPED_180:
1767         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
1768                 cairo_matrix_init(&m, -1, 0, 0, 1, 0, 0);
1769                 break;
1770         default:
1771                 cairo_matrix_init_identity(&m);
1772                 break;
1773         }
1774
1775         switch (transform) {
1776         case WL_OUTPUT_TRANSFORM_NORMAL:
1777         default:
1778                 angle = 0;
1779                 translate_x = 0;
1780                 translate_y = 0;
1781                 break;
1782         case WL_OUTPUT_TRANSFORM_FLIPPED:
1783                 angle = 0;
1784                 translate_x = surface_width;
1785                 translate_y = 0;
1786                 break;
1787         case WL_OUTPUT_TRANSFORM_90:
1788                 angle = M_PI_2;
1789                 translate_x = surface_height;
1790                 translate_y = 0;
1791                 break;
1792         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
1793                 angle = M_PI_2;
1794                 translate_x = surface_height;
1795                 translate_y = surface_width;
1796                 break;
1797         case WL_OUTPUT_TRANSFORM_180:
1798                 angle = M_PI;
1799                 translate_x = surface_width;
1800                 translate_y = surface_height;
1801                 break;
1802         case WL_OUTPUT_TRANSFORM_FLIPPED_180:
1803                 angle = M_PI;
1804                 translate_x = 0;
1805                 translate_y = surface_height;
1806                 break;
1807         case WL_OUTPUT_TRANSFORM_270:
1808                 angle = M_PI + M_PI_2;
1809                 translate_x = 0;
1810                 translate_y = surface_width;
1811                 break;
1812         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
1813                 angle = M_PI + M_PI_2;
1814                 translate_x = 0;
1815                 translate_y = 0;
1816                 break;
1817         }
1818
1819         cairo_scale(cr, scale, scale);
1820         cairo_translate(cr, translate_x, translate_y);
1821         cairo_rotate(cr, angle);
1822         cairo_transform(cr, &m);
1823 }
1824
1825 cairo_t *
1826 widget_cairo_create(struct widget *widget)
1827 {
1828         struct surface *surface = widget->surface;
1829         cairo_surface_t *cairo_surface;
1830         cairo_t *cr;
1831
1832         cairo_surface = widget_get_cairo_surface(widget);
1833         cr = cairo_create(cairo_surface);
1834
1835         widget_cairo_update_transform(widget, cr);
1836
1837         cairo_translate(cr, -surface->allocation.x, -surface->allocation.y);
1838
1839         return cr;
1840 }
1841
1842 struct wl_surface *
1843 widget_get_wl_surface(struct widget *widget)
1844 {
1845         return widget->surface->surface;
1846 }
1847
1848 uint32_t
1849 widget_get_last_time(struct widget *widget)
1850 {
1851         return widget->surface->last_time;
1852 }
1853
1854 void
1855 widget_input_region_add(struct widget *widget, const struct rectangle *rect)
1856 {
1857         struct wl_compositor *comp = widget->window->display->compositor;
1858         struct surface *surface = widget->surface;
1859
1860         if (!surface->input_region)
1861                 surface->input_region = wl_compositor_create_region(comp);
1862
1863         if (rect) {
1864                 wl_region_add(surface->input_region,
1865                               rect->x, rect->y, rect->width, rect->height);
1866         }
1867 }
1868
1869 void
1870 widget_set_resize_handler(struct widget *widget,
1871                           widget_resize_handler_t handler)
1872 {
1873         widget->resize_handler = handler;
1874 }
1875
1876 void
1877 widget_set_redraw_handler(struct widget *widget,
1878                           widget_redraw_handler_t handler)
1879 {
1880         widget->redraw_handler = handler;
1881 }
1882
1883 void
1884 widget_set_enter_handler(struct widget *widget, widget_enter_handler_t handler)
1885 {
1886         widget->enter_handler = handler;
1887 }
1888
1889 void
1890 widget_set_leave_handler(struct widget *widget, widget_leave_handler_t handler)
1891 {
1892         widget->leave_handler = handler;
1893 }
1894
1895 void
1896 widget_set_motion_handler(struct widget *widget,
1897                           widget_motion_handler_t handler)
1898 {
1899         widget->motion_handler = handler;
1900 }
1901
1902 void
1903 widget_set_button_handler(struct widget *widget,
1904                           widget_button_handler_t handler)
1905 {
1906         widget->button_handler = handler;
1907 }
1908
1909 void
1910 widget_set_touch_up_handler(struct widget *widget,
1911                             widget_touch_up_handler_t handler)
1912 {
1913         widget->touch_up_handler = handler;
1914 }
1915
1916 void
1917 widget_set_touch_down_handler(struct widget *widget,
1918                               widget_touch_down_handler_t handler)
1919 {
1920         widget->touch_down_handler = handler;
1921 }
1922
1923 void
1924 widget_set_touch_motion_handler(struct widget *widget,
1925                                 widget_touch_motion_handler_t handler)
1926 {
1927         widget->touch_motion_handler = handler;
1928 }
1929
1930 void
1931 widget_set_touch_frame_handler(struct widget *widget,
1932                                widget_touch_frame_handler_t handler)
1933 {
1934         widget->touch_frame_handler = handler;
1935 }
1936
1937 void
1938 widget_set_touch_cancel_handler(struct widget *widget,
1939                                 widget_touch_cancel_handler_t handler)
1940 {
1941         widget->touch_cancel_handler = handler;
1942 }
1943
1944 void
1945 widget_set_axis_handler(struct widget *widget,
1946                         widget_axis_handler_t handler)
1947 {
1948         widget->axis_handler = handler;
1949 }
1950
1951 static void
1952 window_schedule_redraw_task(struct window *window);
1953
1954 void
1955 widget_schedule_redraw(struct widget *widget)
1956 {
1957         DBG_OBJ(widget->surface->surface, "widget %p\n", widget);
1958         widget->surface->redraw_needed = 1;
1959         window_schedule_redraw_task(widget->window);
1960 }
1961
1962 cairo_surface_t *
1963 window_get_surface(struct window *window)
1964 {
1965         cairo_surface_t *cairo_surface;
1966
1967         cairo_surface = widget_get_cairo_surface(window->main_surface->widget);
1968
1969         return cairo_surface_reference(cairo_surface);
1970 }
1971
1972 struct wl_surface *
1973 window_get_wl_surface(struct window *window)
1974 {
1975         return window->main_surface->surface;
1976 }
1977
1978 struct wl_shell_surface *
1979 window_get_wl_shell_surface(struct window *window)
1980 {
1981         return window->shell_surface;
1982 }
1983
1984 static void
1985 tooltip_redraw_handler(struct widget *widget, void *data)
1986 {
1987         cairo_t *cr;
1988         const int32_t r = 3;
1989         struct tooltip *tooltip = data;
1990         int32_t width, height;
1991
1992         cr = widget_cairo_create(widget);
1993         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1994         cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1995         cairo_paint(cr);
1996
1997         width = widget->allocation.width;
1998         height = widget->allocation.height;
1999         rounded_rect(cr, 0, 0, width, height, r);
2000
2001         cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
2002         cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8);
2003         cairo_fill(cr);
2004
2005         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
2006         cairo_move_to(cr, 10, 16);
2007         cairo_show_text(cr, tooltip->entry);
2008         cairo_destroy(cr);
2009 }
2010
2011 static cairo_text_extents_t
2012 get_text_extents(struct tooltip *tooltip)
2013 {
2014         cairo_t *cr;
2015         cairo_text_extents_t extents;
2016
2017         /* Use the dummy_surface because tooltip's surface was not
2018          * created yet, and parent does not have a valid surface
2019          * outside repaint, either.
2020          */
2021         cr = cairo_create(tooltip->window->display->dummy_surface);
2022         cairo_text_extents(cr, tooltip->entry, &extents);
2023         cairo_destroy(cr);
2024
2025         return extents;
2026 }
2027
2028 static int
2029 window_create_tooltip(struct tooltip *tooltip)
2030 {
2031         struct widget *parent = tooltip->parent;
2032         struct display *display = parent->window->display;
2033         struct window *window;
2034         const int offset_y = 27;
2035         const int margin = 3;
2036         cairo_text_extents_t extents;
2037
2038         if (tooltip->widget)
2039                 return 0;
2040
2041         window = window_create_transient(display, parent->window, tooltip->x,
2042                                          tooltip->y + offset_y,
2043                                          WL_SHELL_SURFACE_TRANSIENT_INACTIVE);
2044         if (!window)
2045                 return -1;
2046
2047         tooltip->window = window;
2048         tooltip->widget = window_add_widget(tooltip->window, tooltip);
2049
2050         extents = get_text_extents(tooltip);
2051         widget_set_redraw_handler(tooltip->widget, tooltip_redraw_handler);
2052         window_schedule_resize(window, extents.width + 20, 20 + margin * 2);
2053
2054         return 0;
2055 }
2056
2057 void
2058 widget_destroy_tooltip(struct widget *parent)
2059 {
2060         struct tooltip *tooltip = parent->tooltip;
2061
2062         parent->tooltip_count = 0;
2063         if (!tooltip)
2064                 return;
2065
2066         if (tooltip->widget) {
2067                 widget_destroy(tooltip->widget);
2068                 window_destroy(tooltip->window);
2069                 tooltip->widget = NULL;
2070                 tooltip->window = NULL;
2071         }
2072
2073         close(tooltip->tooltip_fd);
2074         free(tooltip->entry);
2075         free(tooltip);
2076         parent->tooltip = NULL;
2077 }
2078
2079 static void
2080 tooltip_func(struct task *task, uint32_t events)
2081 {
2082         struct tooltip *tooltip =
2083                 container_of(task, struct tooltip, tooltip_task);
2084         uint64_t exp;
2085
2086         if (read(tooltip->tooltip_fd, &exp, sizeof (uint64_t)) != sizeof (uint64_t))
2087                 abort();
2088         window_create_tooltip(tooltip);
2089 }
2090
2091 #define TOOLTIP_TIMEOUT 500
2092 static int
2093 tooltip_timer_reset(struct tooltip *tooltip)
2094 {
2095         struct itimerspec its;
2096
2097         its.it_interval.tv_sec = 0;
2098         its.it_interval.tv_nsec = 0;
2099         its.it_value.tv_sec = TOOLTIP_TIMEOUT / 1000;
2100         its.it_value.tv_nsec = (TOOLTIP_TIMEOUT % 1000) * 1000 * 1000;
2101         if (timerfd_settime(tooltip->tooltip_fd, 0, &its, NULL) < 0) {
2102                 fprintf(stderr, "could not set timerfd\n: %m");
2103                 return -1;
2104         }
2105
2106         return 0;
2107 }
2108
2109 int
2110 widget_set_tooltip(struct widget *parent, char *entry, float x, float y)
2111 {
2112         struct tooltip *tooltip = parent->tooltip;
2113
2114         parent->tooltip_count++;
2115         if (tooltip) {
2116                 tooltip->x = x;
2117                 tooltip->y = y;
2118                 tooltip_timer_reset(tooltip);
2119                 return 0;
2120         }
2121
2122         /* the handler might be triggered too fast via input device motion, so
2123          * we need this check here to make sure tooltip is fully initialized */
2124         if (parent->tooltip_count > 1)
2125                 return 0;
2126
2127         tooltip = malloc(sizeof *tooltip);
2128         if (!tooltip)
2129                 return -1;
2130
2131         parent->tooltip = tooltip;
2132         tooltip->parent = parent;
2133         tooltip->widget = NULL;
2134         tooltip->window = NULL;
2135         tooltip->x = x;
2136         tooltip->y = y;
2137         tooltip->entry = strdup(entry);
2138         tooltip->tooltip_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
2139         if (tooltip->tooltip_fd < 0) {
2140                 fprintf(stderr, "could not create timerfd\n: %m");
2141                 return -1;
2142         }
2143
2144         tooltip->tooltip_task.run = tooltip_func;
2145         display_watch_fd(parent->window->display, tooltip->tooltip_fd,
2146                          EPOLLIN, &tooltip->tooltip_task);
2147         tooltip_timer_reset(tooltip);
2148
2149         return 0;
2150 }
2151
2152 static void
2153 workspace_manager_state(void *data,
2154                         struct workspace_manager *workspace_manager,
2155                         uint32_t current,
2156                         uint32_t count)
2157 {
2158         struct display *display = data;
2159
2160         display->workspace = current;
2161         display->workspace_count = count;
2162 }
2163
2164 static const struct workspace_manager_listener workspace_manager_listener = {
2165         workspace_manager_state
2166 };
2167
2168 static void
2169 frame_resize_handler(struct widget *widget,
2170                      int32_t width, int32_t height, void *data)
2171 {
2172         struct frame *frame = data;
2173         struct widget *child = frame->child;
2174         struct rectangle allocation;
2175         struct display *display = widget->window->display;
2176         struct surface *surface = widget->surface;
2177         struct frame_button * button;
2178         struct theme *t = display->theme;
2179         int x_l, x_r, y, w, h;
2180         int decoration_width, decoration_height;
2181         int opaque_margin, shadow_margin;
2182
2183         switch (widget->window->type) {
2184         case TYPE_FULLSCREEN:
2185                 decoration_width = 0;
2186                 decoration_height = 0;
2187
2188                 allocation.x = 0;
2189                 allocation.y = 0;
2190                 allocation.width = width;
2191                 allocation.height = height;
2192                 opaque_margin = 0;
2193
2194                 wl_list_for_each(button, &frame->buttons_list, link)
2195                         button->widget->opaque = 1;
2196                 break;
2197         case TYPE_MAXIMIZED:
2198                 decoration_width = t->width * 2;
2199                 decoration_height = t->width + t->titlebar_height;
2200
2201                 allocation.x = t->width;
2202                 allocation.y = t->titlebar_height;
2203                 allocation.width = width - decoration_width;
2204                 allocation.height = height - decoration_height;
2205
2206                 opaque_margin = 0;
2207
2208                 wl_list_for_each(button, &frame->buttons_list, link)
2209                         button->widget->opaque = 0;
2210                 break;
2211         default:
2212                 decoration_width = (t->width + t->margin) * 2;
2213                 decoration_height = t->width +
2214                         t->titlebar_height + t->margin * 2;
2215
2216                 allocation.x = t->width + t->margin;
2217                 allocation.y = t->titlebar_height + t->margin;
2218                 allocation.width = width - decoration_width;
2219                 allocation.height = height - decoration_height;
2220
2221                 opaque_margin = t->margin + t->frame_radius;
2222
2223                 wl_list_for_each(button, &frame->buttons_list, link)
2224                         button->widget->opaque = 0;
2225                 break;
2226         }
2227
2228         widget_set_allocation(child, allocation.x, allocation.y,
2229                               allocation.width, allocation.height);
2230
2231         if (child->resize_handler)
2232                 child->resize_handler(child,
2233                                       allocation.width,
2234                                       allocation.height,
2235                                       child->user_data);
2236
2237         width = child->allocation.width + decoration_width;
2238         height = child->allocation.height + decoration_height;
2239
2240         shadow_margin = widget->window->type == TYPE_MAXIMIZED ? 0 : t->margin;
2241
2242         surface->input_region =
2243                 wl_compositor_create_region(display->compositor);
2244         if (widget->window->type != TYPE_FULLSCREEN) {
2245                 wl_region_add(surface->input_region,
2246                               shadow_margin, shadow_margin,
2247                               width - 2 * shadow_margin,
2248                               height - 2 * shadow_margin);
2249         } else {
2250                 wl_region_add(surface->input_region, 0, 0, width, height);
2251         }
2252
2253         widget_set_allocation(widget, 0, 0, width, height);
2254
2255         if (child->opaque)
2256                 wl_region_add(surface->opaque_region,
2257                               opaque_margin, opaque_margin,
2258                               widget->allocation.width - 2 * opaque_margin,
2259                               widget->allocation.height - 2 * opaque_margin);
2260
2261         /* frame internal buttons */
2262         x_r = frame->widget->allocation.width - t->width - shadow_margin;
2263         x_l = t->width + shadow_margin;
2264         y = t->width + shadow_margin;
2265         wl_list_for_each(button, &frame->buttons_list, link) {
2266                 const int button_padding = 4;
2267                 w = cairo_image_surface_get_width(button->icon);
2268                 h = cairo_image_surface_get_height(button->icon);
2269
2270                 if (button->decoration == FRAME_BUTTON_FANCY)
2271                         w += 10;
2272
2273                 if (button->align == FRAME_BUTTON_LEFT) {
2274                         widget_set_allocation(button->widget,
2275                                               x_l, y , w + 1, h + 1);
2276                         x_l += w;
2277                         x_l += button_padding;
2278                 } else {
2279                         x_r -= w;
2280                         widget_set_allocation(button->widget,
2281                                               x_r, y , w + 1, h + 1);
2282                         x_r -= button_padding;
2283                 }
2284         }
2285 }
2286
2287 static int
2288 frame_button_enter_handler(struct widget *widget,
2289                            struct input *input, float x, float y, void *data)
2290 {
2291         struct frame_button *frame_button = data;
2292
2293         widget_schedule_redraw(frame_button->widget);
2294         frame_button->state = FRAME_BUTTON_OVER;
2295
2296         return CURSOR_LEFT_PTR;
2297 }
2298
2299 static void
2300 frame_button_leave_handler(struct widget *widget, struct input *input, void *data)
2301 {
2302         struct frame_button *frame_button = data;
2303
2304         widget_schedule_redraw(frame_button->widget);
2305         frame_button->state = FRAME_BUTTON_DEFAULT;
2306 }
2307
2308 static void
2309 frame_button_button_handler(struct widget *widget,
2310                             struct input *input, uint32_t time,
2311                             uint32_t button,
2312                             enum wl_pointer_button_state state, void *data)
2313 {
2314         struct frame_button *frame_button = data;
2315         struct window *window = widget->window;
2316         int was_pressed = (frame_button->state == FRAME_BUTTON_ACTIVE);
2317
2318         if (button != BTN_LEFT)
2319                 return;
2320
2321         switch (state) {
2322         case WL_POINTER_BUTTON_STATE_PRESSED:
2323                 frame_button->state = FRAME_BUTTON_ACTIVE;
2324                 widget_schedule_redraw(frame_button->widget);
2325
2326                 if (frame_button->type == FRAME_BUTTON_ICON)
2327                         window_show_frame_menu(window, input, time);
2328                 return;
2329         case WL_POINTER_BUTTON_STATE_RELEASED:
2330                 frame_button->state = FRAME_BUTTON_DEFAULT;
2331                 widget_schedule_redraw(frame_button->widget);
2332                 break;
2333         }
2334
2335         if (!was_pressed)
2336                 return;
2337
2338         switch (frame_button->type) {
2339         case FRAME_BUTTON_CLOSE:
2340                 if (window->close_handler)
2341                         window->close_handler(window->parent,
2342                                               window->user_data);
2343                 else
2344                         display_exit(window->display);
2345                 break;
2346         case FRAME_BUTTON_MINIMIZE:
2347                 fprintf(stderr,"Minimize stub\n");
2348                 break;
2349         case FRAME_BUTTON_MAXIMIZE:
2350                 window_set_maximized(window, window->type != TYPE_MAXIMIZED);
2351                 break;
2352         default:
2353                 /* Unknown operation */
2354                 break;
2355         }
2356 }
2357
2358 static void
2359 frame_button_touch_down_handler(struct widget *widget, struct input *input,
2360                                 uint32_t serial, uint32_t time, int32_t id,
2361                                 float x, float y, void *data)
2362 {
2363         struct frame_button *frame_button = data;
2364         struct window *window = widget->window;
2365
2366         switch (frame_button->type) {
2367         case FRAME_BUTTON_CLOSE:
2368                 if (window->close_handler)
2369                         window->close_handler(window->parent,
2370                                               window->user_data);
2371                 else
2372                         display_exit(window->display);
2373                 break;
2374         case FRAME_BUTTON_MINIMIZE:
2375                 fprintf(stderr,"Minimize stub\n");
2376                 break;
2377         case FRAME_BUTTON_MAXIMIZE:
2378                 window_set_maximized(window, window->type != TYPE_MAXIMIZED);
2379                 break;
2380         default:
2381                 /* Unknown operation */
2382                 break;
2383         }
2384 }
2385
2386
2387 static int
2388 frame_button_motion_handler(struct widget *widget,
2389                             struct input *input, uint32_t time,
2390                             float x, float y, void *data)
2391 {
2392         struct frame_button *frame_button = data;
2393         enum frame_button_pointer previous_button_state = frame_button->state;
2394
2395         /* only track state for a pressed button */
2396         if (input->grab != widget)
2397                 return CURSOR_LEFT_PTR;
2398
2399         if (x > widget->allocation.x &&
2400             x < (widget->allocation.x + widget->allocation.width) &&
2401             y > widget->allocation.y &&
2402             y < (widget->allocation.y + widget->allocation.height)) {
2403                 frame_button->state = FRAME_BUTTON_ACTIVE;
2404         } else {
2405                 frame_button->state = FRAME_BUTTON_DEFAULT;
2406         }
2407
2408         if (frame_button->state != previous_button_state)
2409                 widget_schedule_redraw(frame_button->widget);
2410
2411         return CURSOR_LEFT_PTR;
2412 }
2413
2414 static void
2415 frame_button_redraw_handler(struct widget *widget, void *data)
2416 {
2417         struct frame_button *frame_button = data;
2418         cairo_t *cr;
2419         int width, height, x, y;
2420
2421         x = widget->allocation.x;
2422         y = widget->allocation.y;
2423         width = widget->allocation.width;
2424         height = widget->allocation.height;
2425
2426         if (!width)
2427                 return;
2428         if (!height)
2429                 return;
2430         if (widget->opaque)
2431                 return;
2432
2433         cr = widget_cairo_create(widget);
2434
2435         if (frame_button->decoration == FRAME_BUTTON_FANCY) {
2436                 cairo_set_line_width(cr, 1);
2437
2438                 cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
2439                 cairo_rectangle (cr, x, y, 25, 16);
2440
2441                 cairo_stroke_preserve(cr);
2442
2443                 switch (frame_button->state) {
2444                 case FRAME_BUTTON_DEFAULT:
2445                         cairo_set_source_rgb(cr, 0.88, 0.88, 0.88);
2446                         break;
2447                 case FRAME_BUTTON_OVER:
2448                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
2449                         break;
2450                 case FRAME_BUTTON_ACTIVE:
2451                         cairo_set_source_rgb(cr, 0.7, 0.7, 0.7);
2452                         break;
2453                 }
2454
2455                 cairo_fill (cr);
2456
2457                 x += 4;
2458         }
2459
2460         cairo_set_source_surface(cr, frame_button->icon, x, y);
2461         cairo_paint(cr);
2462
2463         cairo_destroy(cr);
2464 }
2465
2466 static struct widget *
2467 frame_button_create(struct frame *frame, void *data, enum frame_button_action type,
2468         enum frame_button_align align, enum frame_button_decoration style)
2469 {
2470         struct frame_button *frame_button;
2471         const char *icon = data;
2472
2473         frame_button = xzalloc (sizeof *frame_button);
2474         frame_button->icon = cairo_image_surface_create_from_png(icon);
2475         frame_button->widget = widget_add_widget(frame->widget, frame_button);
2476         frame_button->frame = frame;
2477         frame_button->type = type;
2478         frame_button->align = align;
2479         frame_button->decoration = style;
2480
2481         wl_list_insert(frame->buttons_list.prev, &frame_button->link);
2482
2483         widget_set_redraw_handler(frame_button->widget, frame_button_redraw_handler);
2484         widget_set_enter_handler(frame_button->widget, frame_button_enter_handler);
2485         widget_set_leave_handler(frame_button->widget, frame_button_leave_handler);
2486         widget_set_touch_down_handler(frame_button->widget, frame_button_touch_down_handler);
2487         widget_set_button_handler(frame_button->widget, frame_button_button_handler);
2488         widget_set_motion_handler(frame_button->widget, frame_button_motion_handler);
2489         return frame_button->widget;
2490 }
2491
2492 static void
2493 frame_button_destroy(struct frame_button *frame_button)
2494 {
2495         widget_destroy(frame_button->widget);
2496         wl_list_remove(&frame_button->link);
2497         cairo_surface_destroy(frame_button->icon);
2498         free(frame_button);
2499
2500         return;
2501 }
2502
2503 static void
2504 frame_redraw_handler(struct widget *widget, void *data)
2505 {
2506         cairo_t *cr;
2507         struct window *window = widget->window;
2508         struct theme *t = window->display->theme;
2509         uint32_t flags = 0;
2510
2511         if (window->type == TYPE_FULLSCREEN)
2512                 return;
2513
2514         cr = widget_cairo_create(widget);
2515
2516         if (window->focus_count)
2517                 flags |= THEME_FRAME_ACTIVE;
2518         if (window->type == TYPE_MAXIMIZED)
2519                 flags |= THEME_FRAME_MAXIMIZED;
2520         theme_render_frame(t, cr, widget->allocation.width,
2521                            widget->allocation.height, window->title, flags);
2522
2523         cairo_destroy(cr);
2524 }
2525
2526 static int
2527 frame_get_pointer_image_for_location(struct frame *frame, struct input *input)
2528 {
2529         struct theme *t = frame->widget->window->display->theme;
2530         struct window *window = frame->widget->window;
2531         int location;
2532
2533         if (window->type != TYPE_TOPLEVEL)
2534                 return CURSOR_LEFT_PTR;
2535
2536         location = theme_get_location(t, input->sx, input->sy,
2537                                       frame->widget->allocation.width,
2538                                       frame->widget->allocation.height,
2539                                       window->type == TYPE_MAXIMIZED ?
2540                                       THEME_FRAME_MAXIMIZED : 0);
2541
2542         switch (location) {
2543         case THEME_LOCATION_RESIZING_TOP:
2544                 return CURSOR_TOP;
2545         case THEME_LOCATION_RESIZING_BOTTOM:
2546                 return CURSOR_BOTTOM;
2547         case THEME_LOCATION_RESIZING_LEFT:
2548                 return CURSOR_LEFT;
2549         case THEME_LOCATION_RESIZING_RIGHT:
2550                 return CURSOR_RIGHT;
2551         case THEME_LOCATION_RESIZING_TOP_LEFT:
2552                 return CURSOR_TOP_LEFT;
2553         case THEME_LOCATION_RESIZING_TOP_RIGHT:
2554                 return CURSOR_TOP_RIGHT;
2555         case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
2556                 return CURSOR_BOTTOM_LEFT;
2557         case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
2558                 return CURSOR_BOTTOM_RIGHT;
2559         case THEME_LOCATION_EXTERIOR:
2560         case THEME_LOCATION_TITLEBAR:
2561         default:
2562                 return CURSOR_LEFT_PTR;
2563         }
2564 }
2565
2566 static void
2567 frame_menu_func(struct window *window, int index, void *data)
2568 {
2569         struct display *display;
2570
2571         switch (index) {
2572         case 0: /* close */
2573                 if (window->close_handler)
2574                         window->close_handler(window->parent,
2575                                               window->user_data);
2576                 else
2577                         display_exit(window->display);
2578                 break;
2579         case 1: /* move to workspace above */
2580                 display = window->display;
2581                 if (display->workspace > 0)
2582                         workspace_manager_move_surface(
2583                                 display->workspace_manager,
2584                                 window->main_surface->surface,
2585                                 display->workspace - 1);
2586                 break;
2587         case 2: /* move to workspace below */
2588                 display = window->display;
2589                 if (display->workspace < display->workspace_count - 1)
2590                         workspace_manager_move_surface(
2591                                 display->workspace_manager,
2592                                 window->main_surface->surface,
2593                                 display->workspace + 1);
2594                 break;
2595         case 3: /* fullscreen */
2596                 /* we don't have a way to get out of fullscreen for now */
2597                 if (window->fullscreen_handler)
2598                         window->fullscreen_handler(window, window->user_data);
2599                 break;
2600         }
2601 }
2602
2603 void
2604 window_show_frame_menu(struct window *window,
2605                        struct input *input, uint32_t time)
2606 {
2607         int32_t x, y;
2608         int count;
2609
2610         static const char *entries[] = {
2611                 "Close",
2612                 "Move to workspace above", "Move to workspace below",
2613                 "Fullscreen"
2614         };
2615
2616         if (window->fullscreen_handler)
2617                 count = ARRAY_LENGTH(entries);
2618         else
2619                 count = ARRAY_LENGTH(entries) - 1;
2620
2621         input_get_position(input, &x, &y);
2622         window_show_menu(window->display, input, time, window,
2623                          x - 10, y - 10, frame_menu_func, entries, count);
2624 }
2625
2626 static int
2627 frame_enter_handler(struct widget *widget,
2628                     struct input *input, float x, float y, void *data)
2629 {
2630         return frame_get_pointer_image_for_location(data, input);
2631 }
2632
2633 static int
2634 frame_motion_handler(struct widget *widget,
2635                      struct input *input, uint32_t time,
2636                      float x, float y, void *data)
2637 {
2638         return frame_get_pointer_image_for_location(data, input);
2639 }
2640
2641 static void
2642 frame_button_handler(struct widget *widget,
2643                      struct input *input, uint32_t time,
2644                      uint32_t button, enum wl_pointer_button_state state,
2645                      void *data)
2646
2647 {
2648         struct frame *frame = data;
2649         struct window *window = widget->window;
2650         struct display *display = window->display;
2651         int location;
2652
2653         if (state != WL_POINTER_BUTTON_STATE_PRESSED)
2654                 return;
2655
2656         location = theme_get_location(display->theme, input->sx, input->sy,
2657                                       frame->widget->allocation.width,
2658                                       frame->widget->allocation.height,
2659                                       window->type == TYPE_MAXIMIZED ?
2660                                       THEME_FRAME_MAXIMIZED : 0);
2661
2662         if (window->display->shell && button == BTN_LEFT &&
2663             window->type == TYPE_TOPLEVEL) {
2664                 switch (location) {
2665                 case THEME_LOCATION_TITLEBAR:
2666                         if (!window->shell_surface)
2667                                 break;
2668                         input_ungrab(input);
2669                         wl_shell_surface_move(window->shell_surface,
2670                                               input_get_seat(input),
2671                                               display->serial);
2672                         break;
2673                 case THEME_LOCATION_RESIZING_TOP:
2674                 case THEME_LOCATION_RESIZING_BOTTOM:
2675                 case THEME_LOCATION_RESIZING_LEFT:
2676                 case THEME_LOCATION_RESIZING_RIGHT:
2677                 case THEME_LOCATION_RESIZING_TOP_LEFT:
2678                 case THEME_LOCATION_RESIZING_TOP_RIGHT:
2679                 case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
2680                 case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
2681                         if (!window->shell_surface)
2682                                 break;
2683                         input_ungrab(input);
2684
2685                         window->resizing = 1;
2686                         wl_shell_surface_resize(window->shell_surface,
2687                                                 input_get_seat(input),
2688                                                 display->serial, location);
2689                         break;
2690                 }
2691         } else if (button == BTN_RIGHT &&
2692                    (window->type == TYPE_TOPLEVEL ||
2693                     window->type == TYPE_MAXIMIZED)) {
2694                 window_show_frame_menu(window, input, time);
2695         }
2696 }
2697
2698 static void
2699 frame_touch_down_handler(struct widget *widget, struct input *input,
2700                          uint32_t serial, uint32_t time, int32_t id,
2701                          float x, float y, void *data)
2702 {
2703         struct window *window = widget->window;
2704         struct display *display = window->display;
2705
2706         wl_shell_surface_move(window->shell_surface,
2707                               input_get_seat(input),
2708                               display->serial);
2709 }
2710
2711 struct widget *
2712 frame_create(struct window *window, void *data)
2713 {
2714         struct frame *frame;
2715
2716         frame = xzalloc(sizeof *frame);
2717         frame->widget = window_add_widget(window, frame);
2718         frame->child = widget_add_widget(frame->widget, data);
2719
2720         widget_set_redraw_handler(frame->widget, frame_redraw_handler);
2721         widget_set_resize_handler(frame->widget, frame_resize_handler);
2722         widget_set_enter_handler(frame->widget, frame_enter_handler);
2723         widget_set_motion_handler(frame->widget, frame_motion_handler);
2724         widget_set_button_handler(frame->widget, frame_button_handler);
2725         widget_set_touch_down_handler(frame->widget, frame_touch_down_handler);
2726
2727         /* Create empty list for frame buttons */
2728         wl_list_init(&frame->buttons_list);
2729
2730         frame_button_create(frame, DATADIR "/weston/icon_window.png",
2731                 FRAME_BUTTON_ICON, FRAME_BUTTON_LEFT, FRAME_BUTTON_NONE);
2732
2733         frame_button_create(frame, DATADIR "/weston/sign_close.png",
2734                 FRAME_BUTTON_CLOSE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
2735
2736         frame_button_create(frame, DATADIR "/weston/sign_maximize.png",
2737                 FRAME_BUTTON_MAXIMIZE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
2738
2739         frame_button_create(frame, DATADIR "/weston/sign_minimize.png",
2740                 FRAME_BUTTON_MINIMIZE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
2741
2742         window->frame = frame;
2743
2744         return frame->child;
2745 }
2746
2747 void
2748 frame_set_child_size(struct widget *widget, int child_width, int child_height)
2749 {
2750         struct display *display = widget->window->display;
2751         struct theme *t = display->theme;
2752         int decoration_width, decoration_height;
2753         int width, height;
2754         int margin = widget->window->type == TYPE_MAXIMIZED ? 0 : t->margin;
2755
2756         if (widget->window->type != TYPE_FULLSCREEN) {
2757                 decoration_width = (t->width + margin) * 2;
2758                 decoration_height = t->width +
2759                         t->titlebar_height + margin * 2;
2760
2761                 width = child_width + decoration_width;
2762                 height = child_height + decoration_height;
2763         } else {
2764                 width = child_width;
2765                 height = child_height;
2766         }
2767
2768         window_schedule_resize(widget->window, width, height);
2769 }
2770
2771 static void
2772 frame_destroy(struct frame *frame)
2773 {
2774         struct frame_button *button, *tmp;
2775
2776         wl_list_for_each_safe(button, tmp, &frame->buttons_list, link)
2777                 frame_button_destroy(button);
2778
2779         /* frame->child must be destroyed by the application */
2780         widget_destroy(frame->widget);
2781         free(frame);
2782 }
2783
2784 static void
2785 input_set_focus_widget(struct input *input, struct widget *focus,
2786                        float x, float y)
2787 {
2788         struct widget *old, *widget;
2789         int cursor;
2790
2791         if (focus == input->focus_widget)
2792                 return;
2793
2794         old = input->focus_widget;
2795         if (old) {
2796                 widget = old;
2797                 if (input->grab)
2798                         widget = input->grab;
2799                 if (widget->leave_handler)
2800                         widget->leave_handler(old, input, widget->user_data);
2801                 input->focus_widget = NULL;
2802         }
2803
2804         if (focus) {
2805                 widget = focus;
2806                 if (input->grab)
2807                         widget = input->grab;
2808                 input->focus_widget = focus;
2809                 if (widget->enter_handler)
2810                         cursor = widget->enter_handler(focus, input, x, y,
2811                                                        widget->user_data);
2812                 else
2813                         cursor = widget->default_cursor;
2814
2815                 input_set_pointer_image(input, cursor);
2816         }
2817 }
2818
2819 void
2820 input_grab(struct input *input, struct widget *widget, uint32_t button)
2821 {
2822         input->grab = widget;
2823         input->grab_button = button;
2824 }
2825
2826 void
2827 input_ungrab(struct input *input)
2828 {
2829         struct widget *widget;
2830
2831         input->grab = NULL;
2832         if (input->pointer_focus) {
2833                 widget = window_find_widget(input->pointer_focus,
2834                                             input->sx, input->sy);
2835                 input_set_focus_widget(input, widget, input->sx, input->sy);
2836         }
2837 }
2838
2839 static void
2840 input_remove_pointer_focus(struct input *input)
2841 {
2842         struct window *window = input->pointer_focus;
2843
2844         if (!window)
2845                 return;
2846
2847         input_set_focus_widget(input, NULL, 0, 0);
2848
2849         input->pointer_focus = NULL;
2850         input->current_cursor = CURSOR_UNSET;
2851 }
2852
2853 static void
2854 pointer_handle_enter(void *data, struct wl_pointer *pointer,
2855                      uint32_t serial, struct wl_surface *surface,
2856                      wl_fixed_t sx_w, wl_fixed_t sy_w)
2857 {
2858         struct input *input = data;
2859         struct window *window;
2860         struct widget *widget;
2861         float sx = wl_fixed_to_double(sx_w);
2862         float sy = wl_fixed_to_double(sy_w);
2863
2864         if (!surface) {
2865                 /* enter event for a window we've just destroyed */
2866                 return;
2867         }
2868
2869         input->display->serial = serial;
2870         input->pointer_enter_serial = serial;
2871         input->pointer_focus = wl_surface_get_user_data(surface);
2872         window = input->pointer_focus;
2873
2874         if (window->resizing) {
2875                 window->resizing = 0;
2876                 /* Schedule a redraw to free the pool */
2877                 window_schedule_redraw(window);
2878         }
2879
2880         input->sx = sx;
2881         input->sy = sy;
2882
2883         widget = window_find_widget(window, sx, sy);
2884         input_set_focus_widget(input, widget, sx, sy);
2885 }
2886
2887 static void
2888 pointer_handle_leave(void *data, struct wl_pointer *pointer,
2889                      uint32_t serial, struct wl_surface *surface)
2890 {
2891         struct input *input = data;
2892
2893         input->display->serial = serial;
2894         input_remove_pointer_focus(input);
2895 }
2896
2897 static void
2898 pointer_handle_motion(void *data, struct wl_pointer *pointer,
2899                       uint32_t time, wl_fixed_t sx_w, wl_fixed_t sy_w)
2900 {
2901         struct input *input = data;
2902         struct window *window = input->pointer_focus;
2903         struct widget *widget;
2904         int cursor;
2905         float sx = wl_fixed_to_double(sx_w);
2906         float sy = wl_fixed_to_double(sy_w);
2907
2908         input->sx = sx;
2909         input->sy = sy;
2910
2911         if (!window)
2912                 return;
2913
2914         /* when making the window smaller - e.g. after a unmaximise we might
2915          * still have a pending motion event that the compositor has picked
2916          * based on the old surface dimensions
2917          */
2918         if (sx > window->main_surface->allocation.width ||
2919             sy > window->main_surface->allocation.height)
2920                 return;
2921
2922         if (!(input->grab && input->grab_button)) {
2923                 widget = window_find_widget(window, sx, sy);
2924                 input_set_focus_widget(input, widget, sx, sy);
2925         }
2926
2927         if (input->grab)
2928                 widget = input->grab;
2929         else
2930                 widget = input->focus_widget;
2931         if (widget) {
2932                 if (widget->motion_handler)
2933                         cursor = widget->motion_handler(input->focus_widget,
2934                                                         input, time, sx, sy,
2935                                                         widget->user_data);
2936                 else
2937                         cursor = widget->default_cursor;
2938         } else
2939                 cursor = CURSOR_LEFT_PTR;
2940
2941         input_set_pointer_image(input, cursor);
2942 }
2943
2944 static void
2945 pointer_handle_button(void *data, struct wl_pointer *pointer, uint32_t serial,
2946                       uint32_t time, uint32_t button, uint32_t state_w)
2947 {
2948         struct input *input = data;
2949         struct widget *widget;
2950         enum wl_pointer_button_state state = state_w;
2951
2952         input->display->serial = serial;
2953         if (input->focus_widget && input->grab == NULL &&
2954             state == WL_POINTER_BUTTON_STATE_PRESSED)
2955                 input_grab(input, input->focus_widget, button);
2956
2957         widget = input->grab;
2958         if (widget && widget->button_handler)
2959                 (*widget->button_handler)(widget,
2960                                           input, time,
2961                                           button, state,
2962                                           input->grab->user_data);
2963
2964         if (input->grab && input->grab_button == button &&
2965             state == WL_POINTER_BUTTON_STATE_RELEASED)
2966                 input_ungrab(input);
2967 }
2968
2969 static void
2970 pointer_handle_axis(void *data, struct wl_pointer *pointer,
2971                     uint32_t time, uint32_t axis, wl_fixed_t value)
2972 {
2973         struct input *input = data;
2974         struct widget *widget;
2975
2976         widget = input->focus_widget;
2977         if (input->grab)
2978                 widget = input->grab;
2979         if (widget && widget->axis_handler)
2980                 (*widget->axis_handler)(widget,
2981                                         input, time,
2982                                         axis, value,
2983                                         widget->user_data);
2984 }
2985
2986 static const struct wl_pointer_listener pointer_listener = {
2987         pointer_handle_enter,
2988         pointer_handle_leave,
2989         pointer_handle_motion,
2990         pointer_handle_button,
2991         pointer_handle_axis,
2992 };
2993
2994 static void
2995 input_remove_keyboard_focus(struct input *input)
2996 {
2997         struct window *window = input->keyboard_focus;
2998         struct itimerspec its;
2999
3000         its.it_interval.tv_sec = 0;
3001         its.it_interval.tv_nsec = 0;
3002         its.it_value.tv_sec = 0;
3003         its.it_value.tv_nsec = 0;
3004         timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
3005
3006         if (!window)
3007                 return;
3008
3009         window->focus_count--;
3010         if (window->keyboard_focus_handler)
3011                 (*window->keyboard_focus_handler)(window, NULL,
3012                                                   window->user_data);
3013
3014         input->keyboard_focus = NULL;
3015 }
3016
3017 static void
3018 keyboard_repeat_func(struct task *task, uint32_t events)
3019 {
3020         struct input *input =
3021                 container_of(task, struct input, repeat_task);
3022         struct window *window = input->keyboard_focus;
3023         uint64_t exp;
3024
3025         if (read(input->repeat_timer_fd, &exp, sizeof exp) != sizeof exp)
3026                 /* If we change the timer between the fd becoming
3027                  * readable and getting here, there'll be nothing to
3028                  * read and we get EAGAIN. */
3029                 return;
3030
3031         if (window && window->key_handler) {
3032                 (*window->key_handler)(window, input, input->repeat_time,
3033                                        input->repeat_key, input->repeat_sym,
3034                                        WL_KEYBOARD_KEY_STATE_PRESSED,
3035                                        window->user_data);
3036         }
3037 }
3038
3039 static void
3040 keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
3041                        uint32_t format, int fd, uint32_t size)
3042 {
3043         struct input *input = data;
3044         char *map_str;
3045
3046         if (!data) {
3047                 close(fd);
3048                 return;
3049         }
3050
3051         if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
3052                 close(fd);
3053                 return;
3054         }
3055
3056         map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
3057         if (map_str == MAP_FAILED) {
3058                 close(fd);
3059                 return;
3060         }
3061
3062         input->xkb.keymap = xkb_map_new_from_string(input->display->xkb_context,
3063                                                     map_str,
3064                                                     XKB_KEYMAP_FORMAT_TEXT_V1,
3065                                                     0);
3066         munmap(map_str, size);
3067         close(fd);
3068
3069         if (!input->xkb.keymap) {
3070                 fprintf(stderr, "failed to compile keymap\n");
3071                 return;
3072         }
3073
3074         input->xkb.state = xkb_state_new(input->xkb.keymap);
3075         if (!input->xkb.state) {
3076                 fprintf(stderr, "failed to create XKB state\n");
3077                 xkb_map_unref(input->xkb.keymap);
3078                 input->xkb.keymap = NULL;
3079                 return;
3080         }
3081
3082         input->xkb.control_mask =
3083                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Control");
3084         input->xkb.alt_mask =
3085                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Mod1");
3086         input->xkb.shift_mask =
3087                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Shift");
3088 }
3089
3090 static void
3091 keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
3092                       uint32_t serial, struct wl_surface *surface,
3093                       struct wl_array *keys)
3094 {
3095         struct input *input = data;
3096         struct window *window;
3097
3098         input->display->serial = serial;
3099         input->keyboard_focus = wl_surface_get_user_data(surface);
3100
3101         window = input->keyboard_focus;
3102         window->focus_count++;
3103         if (window->keyboard_focus_handler)
3104                 (*window->keyboard_focus_handler)(window,
3105                                                   input, window->user_data);
3106 }
3107
3108 static void
3109 keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,
3110                       uint32_t serial, struct wl_surface *surface)
3111 {
3112         struct input *input = data;
3113
3114         input->display->serial = serial;
3115         input_remove_keyboard_focus(input);
3116 }
3117
3118 static void
3119 keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
3120                     uint32_t serial, uint32_t time, uint32_t key,
3121                     uint32_t state_w)
3122 {
3123         struct input *input = data;
3124         struct window *window = input->keyboard_focus;
3125         uint32_t code, num_syms;
3126         enum wl_keyboard_key_state state = state_w;
3127         const xkb_keysym_t *syms;
3128         xkb_keysym_t sym;
3129         struct itimerspec its;
3130
3131         input->display->serial = serial;
3132         code = key + 8;
3133         if (!window || !input->xkb.state)
3134                 return;
3135
3136         num_syms = xkb_key_get_syms(input->xkb.state, code, &syms);
3137
3138         sym = XKB_KEY_NoSymbol;
3139         if (num_syms == 1)
3140                 sym = syms[0];
3141
3142         if (sym == XKB_KEY_F5 && input->modifiers == MOD_ALT_MASK) {
3143                 if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
3144                         window_set_maximized(window,
3145                                              window->type != TYPE_MAXIMIZED);
3146         } else if (sym == XKB_KEY_F11 &&
3147                    window->fullscreen_handler &&
3148                    state == WL_KEYBOARD_KEY_STATE_PRESSED) {
3149                 window->fullscreen_handler(window, window->user_data);
3150         } else if (sym == XKB_KEY_F4 &&
3151                    input->modifiers == MOD_ALT_MASK &&
3152                    state == WL_KEYBOARD_KEY_STATE_PRESSED) {
3153                 if (window->close_handler)
3154                         window->close_handler(window->parent,
3155                                               window->user_data);
3156                 else
3157                         display_exit(window->display);
3158         } else if (window->key_handler) {
3159                 (*window->key_handler)(window, input, time, key,
3160                                        sym, state, window->user_data);
3161         }
3162
3163         if (state == WL_KEYBOARD_KEY_STATE_RELEASED &&
3164             key == input->repeat_key) {
3165                 its.it_interval.tv_sec = 0;
3166                 its.it_interval.tv_nsec = 0;
3167                 its.it_value.tv_sec = 0;
3168                 its.it_value.tv_nsec = 0;
3169                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
3170         } else if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
3171                 input->repeat_sym = sym;
3172                 input->repeat_key = key;
3173                 input->repeat_time = time;
3174                 its.it_interval.tv_sec = 0;
3175                 its.it_interval.tv_nsec = 25 * 1000 * 1000;
3176                 its.it_value.tv_sec = 0;
3177                 its.it_value.tv_nsec = 400 * 1000 * 1000;
3178                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
3179         }
3180 }
3181
3182 static void
3183 keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
3184                           uint32_t serial, uint32_t mods_depressed,
3185                           uint32_t mods_latched, uint32_t mods_locked,
3186                           uint32_t group)
3187 {
3188         struct input *input = data;
3189         xkb_mod_mask_t mask;
3190
3191         /* If we're not using a keymap, then we don't handle PC-style modifiers */
3192         if (!input->xkb.keymap)
3193                 return;
3194
3195         xkb_state_update_mask(input->xkb.state, mods_depressed, mods_latched,
3196                               mods_locked, 0, 0, group);
3197         mask = xkb_state_serialize_mods(input->xkb.state,
3198                                         XKB_STATE_DEPRESSED |
3199                                         XKB_STATE_LATCHED);
3200         input->modifiers = 0;
3201         if (mask & input->xkb.control_mask)
3202                 input->modifiers |= MOD_CONTROL_MASK;
3203         if (mask & input->xkb.alt_mask)
3204                 input->modifiers |= MOD_ALT_MASK;
3205         if (mask & input->xkb.shift_mask)
3206                 input->modifiers |= MOD_SHIFT_MASK;
3207 }
3208
3209 static const struct wl_keyboard_listener keyboard_listener = {
3210         keyboard_handle_keymap,
3211         keyboard_handle_enter,
3212         keyboard_handle_leave,
3213         keyboard_handle_key,
3214         keyboard_handle_modifiers,
3215 };
3216
3217 static void
3218 touch_handle_down(void *data, struct wl_touch *wl_touch,
3219                   uint32_t serial, uint32_t time, struct wl_surface *surface,
3220                   int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
3221 {
3222         struct input *input = data;
3223         struct widget *widget;
3224         float sx = wl_fixed_to_double(x_w);
3225         float sy = wl_fixed_to_double(y_w);
3226
3227         input->display->serial = serial;
3228         input->touch_focus = wl_surface_get_user_data(surface);
3229         if (!input->touch_focus) {
3230                 DBG("Failed to find to touch focus for surface %p\n", surface);
3231                 return;
3232         }
3233
3234         widget = window_find_widget(input->touch_focus,
3235                                     wl_fixed_to_double(x_w),
3236                                     wl_fixed_to_double(y_w));
3237         if (widget) {
3238                 struct touch_point *tp = xmalloc(sizeof *tp);
3239                 if (tp) {
3240                         tp->id = id;
3241                         tp->widget = widget;
3242                         wl_list_insert(&input->touch_point_list, &tp->link);
3243
3244                         if (widget->touch_down_handler)
3245                                 (*widget->touch_down_handler)(widget, input,
3246                                                               serial, time, id,
3247                                                               sx, sy,
3248                                                               widget->user_data);
3249                 }
3250         }
3251 }
3252
3253 static void
3254 touch_handle_up(void *data, struct wl_touch *wl_touch,
3255                 uint32_t serial, uint32_t time, int32_t id)
3256 {
3257         struct input *input = data;
3258         struct touch_point *tp, *tmp;
3259
3260         if (!input->touch_focus) {
3261                 DBG("No touch focus found for touch up event!\n");
3262                 return;
3263         }
3264
3265         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3266                 if (tp->id != id)
3267                         continue;
3268
3269                 if (tp->widget->touch_up_handler)
3270                         (*tp->widget->touch_up_handler)(tp->widget, input, serial,
3271                                                         time, id,
3272                                                         tp->widget->user_data);
3273
3274                 wl_list_remove(&tp->link);
3275                 free(tp);
3276
3277                 return;
3278         }
3279 }
3280
3281 static void
3282 touch_handle_motion(void *data, struct wl_touch *wl_touch,
3283                     uint32_t time, int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
3284 {
3285         struct input *input = data;
3286         struct touch_point *tp;
3287         float sx = wl_fixed_to_double(x_w);
3288         float sy = wl_fixed_to_double(y_w);
3289
3290         DBG("touch_handle_motion: %i %i\n", id, wl_list_length(&input->touch_point_list));
3291
3292         if (!input->touch_focus) {
3293                 DBG("No touch focus found for touch motion event!\n");
3294                 return;
3295         }
3296
3297         wl_list_for_each(tp, &input->touch_point_list, link) {
3298                 if (tp->id != id)
3299                         continue;
3300
3301                 if (tp->widget->touch_motion_handler)
3302                         (*tp->widget->touch_motion_handler)(tp->widget, input, time,
3303                                                             id, sx, sy,
3304                                                             tp->widget->user_data);
3305                 return;
3306         }
3307 }
3308
3309 static void
3310 touch_handle_frame(void *data, struct wl_touch *wl_touch)
3311 {
3312         struct input *input = data;
3313         struct touch_point *tp, *tmp;
3314
3315         DBG("touch_handle_frame\n");
3316
3317         if (!input->touch_focus) {
3318                 DBG("No touch focus found for touch frame event!\n");
3319                 return;
3320         }
3321
3322         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3323                 if (tp->widget->touch_frame_handler)
3324                         (*tp->widget->touch_frame_handler)(tp->widget, input,
3325                                                            tp->widget->user_data);
3326
3327                 wl_list_remove(&tp->link);
3328                 free(tp);
3329         }
3330 }
3331
3332 static void
3333 touch_handle_cancel(void *data, struct wl_touch *wl_touch)
3334 {
3335         struct input *input = data;
3336         struct touch_point *tp, *tmp;
3337
3338         DBG("touch_handle_cancel\n");
3339
3340         if (!input->touch_focus) {
3341                 DBG("No touch focus found for touch cancel event!\n");
3342                 return;
3343         }
3344
3345         wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) {
3346                 if (tp->widget->touch_cancel_handler)
3347                         (*tp->widget->touch_cancel_handler)(tp->widget, input,
3348                                                             tp->widget->user_data);
3349
3350                 wl_list_remove(&tp->link);
3351                 free(tp);
3352         }
3353 }
3354
3355 static const struct wl_touch_listener touch_listener = {
3356         touch_handle_down,
3357         touch_handle_up,
3358         touch_handle_motion,
3359         touch_handle_frame,
3360         touch_handle_cancel,
3361 };
3362
3363 static void
3364 seat_handle_capabilities(void *data, struct wl_seat *seat,
3365                          enum wl_seat_capability caps)
3366 {
3367         struct input *input = data;
3368
3369         if ((caps & WL_SEAT_CAPABILITY_POINTER) && !input->pointer) {
3370                 input->pointer = wl_seat_get_pointer(seat);
3371                 wl_pointer_set_user_data(input->pointer, input);
3372                 wl_pointer_add_listener(input->pointer, &pointer_listener,
3373                                         input);
3374         } else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && input->pointer) {
3375                 wl_pointer_destroy(input->pointer);
3376                 input->pointer = NULL;
3377         }
3378
3379         if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
3380                 input->keyboard = wl_seat_get_keyboard(seat);
3381                 wl_keyboard_set_user_data(input->keyboard, input);
3382                 wl_keyboard_add_listener(input->keyboard, &keyboard_listener,
3383                                          input);
3384         } else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) {
3385                 wl_keyboard_destroy(input->keyboard);
3386                 input->keyboard = NULL;
3387         }
3388
3389         if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !input->touch) {
3390                 input->touch = wl_seat_get_touch(seat);
3391                 wl_touch_set_user_data(input->touch, input);
3392                 wl_touch_add_listener(input->touch, &touch_listener, input);
3393         } else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && input->touch) {
3394                 wl_touch_destroy(input->touch);
3395                 input->touch = NULL;
3396         }
3397 }
3398
3399 static void
3400 seat_handle_name(void *data, struct wl_seat *seat,
3401                  const char *name)
3402 {
3403
3404 }
3405
3406 static const struct wl_seat_listener seat_listener = {
3407         seat_handle_capabilities,
3408         seat_handle_name
3409 };
3410
3411 void
3412 input_get_position(struct input *input, int32_t *x, int32_t *y)
3413 {
3414         *x = input->sx;
3415         *y = input->sy;
3416 }
3417
3418 struct display *
3419 input_get_display(struct input *input)
3420 {
3421         return input->display;
3422 }
3423
3424 struct wl_seat *
3425 input_get_seat(struct input *input)
3426 {
3427         return input->seat;
3428 }
3429
3430 uint32_t
3431 input_get_modifiers(struct input *input)
3432 {
3433         return input->modifiers;
3434 }
3435
3436 struct widget *
3437 input_get_focus_widget(struct input *input)
3438 {
3439         return input->focus_widget;
3440 }
3441
3442 struct data_offer {
3443         struct wl_data_offer *offer;
3444         struct input *input;
3445         struct wl_array types;
3446         int refcount;
3447
3448         struct task io_task;
3449         int fd;
3450         data_func_t func;
3451         int32_t x, y;
3452         void *user_data;
3453 };
3454
3455 static void
3456 data_offer_offer(void *data, struct wl_data_offer *wl_data_offer, const char *type)
3457 {
3458         struct data_offer *offer = data;
3459         char **p;
3460
3461         p = wl_array_add(&offer->types, sizeof *p);
3462         *p = strdup(type);
3463 }
3464
3465 static const struct wl_data_offer_listener data_offer_listener = {
3466         data_offer_offer,
3467 };
3468
3469 static void
3470 data_offer_destroy(struct data_offer *offer)
3471 {
3472         char **p;
3473
3474         offer->refcount--;
3475         if (offer->refcount == 0) {
3476                 wl_data_offer_destroy(offer->offer);
3477                 for (p = offer->types.data; *p; p++)
3478                         free(*p);
3479                 wl_array_release(&offer->types);
3480                 free(offer);
3481         }
3482 }
3483
3484 static void
3485 data_device_data_offer(void *data,
3486                        struct wl_data_device *data_device,
3487                        struct wl_data_offer *_offer)
3488 {
3489         struct data_offer *offer;
3490
3491         offer = xmalloc(sizeof *offer);
3492
3493         wl_array_init(&offer->types);
3494         offer->refcount = 1;
3495         offer->input = data;
3496         offer->offer = _offer;
3497         wl_data_offer_add_listener(offer->offer,
3498                                    &data_offer_listener, offer);
3499 }
3500
3501 static void
3502 data_device_enter(void *data, struct wl_data_device *data_device,
3503                   uint32_t serial, struct wl_surface *surface,
3504                   wl_fixed_t x_w, wl_fixed_t y_w,
3505                   struct wl_data_offer *offer)
3506 {
3507         struct input *input = data;
3508         struct window *window;
3509         void *types_data;
3510         float x = wl_fixed_to_double(x_w);
3511         float y = wl_fixed_to_double(y_w);
3512         char **p;
3513
3514         input->pointer_enter_serial = serial;
3515         window = wl_surface_get_user_data(surface);
3516         input->pointer_focus = window;
3517
3518         if (offer) {
3519                 input->drag_offer = wl_data_offer_get_user_data(offer);
3520
3521                 p = wl_array_add(&input->drag_offer->types, sizeof *p);
3522                 *p = NULL;
3523
3524                 types_data = input->drag_offer->types.data;
3525         } else {
3526                 input->drag_offer = NULL;
3527                 types_data = NULL;
3528         }
3529
3530         window = input->pointer_focus;
3531         if (window->data_handler)
3532                 window->data_handler(window, input, x, y, types_data,
3533                                      window->user_data);
3534 }
3535
3536 static void
3537 data_device_leave(void *data, struct wl_data_device *data_device)
3538 {
3539         struct input *input = data;
3540
3541         if (input->drag_offer) {
3542                 data_offer_destroy(input->drag_offer);
3543                 input->drag_offer = NULL;
3544         }
3545 }
3546
3547 static void
3548 data_device_motion(void *data, struct wl_data_device *data_device,
3549                    uint32_t time, wl_fixed_t x_w, wl_fixed_t y_w)
3550 {
3551         struct input *input = data;
3552         struct window *window = input->pointer_focus;
3553         float x = wl_fixed_to_double(x_w);
3554         float y = wl_fixed_to_double(y_w);
3555         void *types_data;
3556
3557         input->sx = x;
3558         input->sy = y;
3559
3560         if (input->drag_offer)
3561                 types_data = input->drag_offer->types.data;
3562         else
3563                 types_data = NULL;
3564
3565         if (window->data_handler)
3566                 window->data_handler(window, input, x, y, types_data,
3567                                      window->user_data);
3568 }
3569
3570 static void
3571 data_device_drop(void *data, struct wl_data_device *data_device)
3572 {
3573         struct input *input = data;
3574         struct window *window = input->pointer_focus;
3575
3576         if (window->drop_handler)
3577                 window->drop_handler(window, input,
3578                                      input->sx, input->sy, window->user_data);
3579 }
3580
3581 static void
3582 data_device_selection(void *data,
3583                       struct wl_data_device *wl_data_device,
3584                       struct wl_data_offer *offer)
3585 {
3586         struct input *input = data;
3587         char **p;
3588
3589         if (input->selection_offer)
3590                 data_offer_destroy(input->selection_offer);
3591
3592         if (offer) {
3593                 input->selection_offer = wl_data_offer_get_user_data(offer);
3594                 p = wl_array_add(&input->selection_offer->types, sizeof *p);
3595                 *p = NULL;
3596         } else {
3597                 input->selection_offer = NULL;
3598         }
3599 }
3600
3601 static const struct wl_data_device_listener data_device_listener = {
3602         data_device_data_offer,
3603         data_device_enter,
3604         data_device_leave,
3605         data_device_motion,
3606         data_device_drop,
3607         data_device_selection
3608 };
3609
3610 static void
3611 input_set_pointer_image_index(struct input *input, int index)
3612 {
3613         struct wl_buffer *buffer;
3614         struct wl_cursor *cursor;
3615         struct wl_cursor_image *image;
3616
3617         if (!input->pointer)
3618                 return;
3619
3620         cursor = input->display->cursors[input->current_cursor];
3621         if (!cursor)
3622                 return;
3623
3624         if (index >= (int) cursor->image_count) {
3625                 fprintf(stderr, "cursor index out of range\n");
3626                 return;
3627         }
3628
3629         image = cursor->images[index];
3630         buffer = wl_cursor_image_get_buffer(image);
3631         if (!buffer)
3632                 return;
3633
3634         wl_pointer_set_cursor(input->pointer, input->pointer_enter_serial,
3635                               input->pointer_surface,
3636                               image->hotspot_x, image->hotspot_y);
3637         wl_surface_attach(input->pointer_surface, buffer, 0, 0);
3638         wl_surface_damage(input->pointer_surface, 0, 0,
3639                           image->width, image->height);
3640         wl_surface_commit(input->pointer_surface);
3641 }
3642
3643 static const struct wl_callback_listener pointer_surface_listener;
3644
3645 static void
3646 pointer_surface_frame_callback(void *data, struct wl_callback *callback,
3647                                uint32_t time)
3648 {
3649         struct input *input = data;
3650         struct wl_cursor *cursor;
3651         int i;
3652
3653         if (callback) {
3654                 assert(callback == input->cursor_frame_cb);
3655                 wl_callback_destroy(callback);
3656                 input->cursor_frame_cb = NULL;
3657         }
3658
3659         if (!input->pointer)
3660                 return;
3661
3662         if (input->current_cursor == CURSOR_BLANK) {
3663                 wl_pointer_set_cursor(input->pointer,
3664                                       input->pointer_enter_serial,
3665                                       NULL, 0, 0);
3666                 return;
3667         }
3668
3669         if (input->current_cursor == CURSOR_UNSET)
3670                 return;
3671         cursor = input->display->cursors[input->current_cursor];
3672         if (!cursor)
3673                 return;
3674
3675         /* FIXME We don't have the current time on the first call so we set
3676          * the animation start to the time of the first frame callback. */
3677         if (time == 0)
3678                 input->cursor_anim_start = 0;
3679         else if (input->cursor_anim_start == 0)
3680                 input->cursor_anim_start = time;
3681
3682         if (time == 0 || input->cursor_anim_start == 0)
3683                 i = 0;
3684         else
3685                 i = wl_cursor_frame(cursor, time - input->cursor_anim_start);
3686
3687         if (cursor->image_count > 1) {
3688                 input->cursor_frame_cb =
3689                         wl_surface_frame(input->pointer_surface);
3690                 wl_callback_add_listener(input->cursor_frame_cb,
3691                                          &pointer_surface_listener, input);
3692         }
3693
3694         input_set_pointer_image_index(input, i);
3695 }
3696
3697 static const struct wl_callback_listener pointer_surface_listener = {
3698         pointer_surface_frame_callback
3699 };
3700
3701 void
3702 input_set_pointer_image(struct input *input, int pointer)
3703 {
3704         int force = 0;
3705
3706         if (!input->pointer)
3707                 return;
3708
3709         if (input->pointer_enter_serial > input->cursor_serial)
3710                 force = 1;
3711
3712         if (!force && pointer == input->current_cursor)
3713                 return;
3714
3715         input->current_cursor = pointer;
3716         input->cursor_serial = input->pointer_enter_serial;
3717         if (!input->cursor_frame_cb)
3718                 pointer_surface_frame_callback(input, NULL, 0);
3719         else if (force) {
3720                 /* The current frame callback may be stuck if, for instance,
3721                  * the set cursor request was processed by the server after
3722                  * this client lost the focus. In this case the cursor surface
3723                  * might not be mapped and the frame callback wouldn't ever
3724                  * complete. Send a set_cursor and attach to try to map the
3725                  * cursor surface again so that the callback will finish */
3726                 input_set_pointer_image_index(input, 0);
3727         }
3728 }
3729
3730 struct wl_data_device *
3731 input_get_data_device(struct input *input)
3732 {
3733         return input->data_device;
3734 }
3735
3736 void
3737 input_set_selection(struct input *input,
3738                     struct wl_data_source *source, uint32_t time)
3739 {
3740         wl_data_device_set_selection(input->data_device, source, time);
3741 }
3742
3743 void
3744 input_accept(struct input *input, const char *type)
3745 {
3746         wl_data_offer_accept(input->drag_offer->offer,
3747                              input->pointer_enter_serial, type);
3748 }
3749
3750 static void
3751 offer_io_func(struct task *task, uint32_t events)
3752 {
3753         struct data_offer *offer =
3754                 container_of(task, struct data_offer, io_task);
3755         unsigned int len;
3756         char buffer[4096];
3757
3758         len = read(offer->fd, buffer, sizeof buffer);
3759         offer->func(buffer, len,
3760                     offer->x, offer->y, offer->user_data);
3761
3762         if (len == 0) {
3763                 close(offer->fd);
3764                 data_offer_destroy(offer);
3765         }
3766 }
3767
3768 static void
3769 data_offer_receive_data(struct data_offer *offer, const char *mime_type,
3770                         data_func_t func, void *user_data)
3771 {
3772         int p[2];
3773
3774         if (pipe2(p, O_CLOEXEC) == -1)
3775                 return;
3776
3777         wl_data_offer_receive(offer->offer, mime_type, p[1]);
3778         close(p[1]);
3779
3780         offer->io_task.run = offer_io_func;
3781         offer->fd = p[0];
3782         offer->func = func;
3783         offer->refcount++;
3784         offer->user_data = user_data;
3785
3786         display_watch_fd(offer->input->display,
3787                          offer->fd, EPOLLIN, &offer->io_task);
3788 }
3789
3790 void
3791 input_receive_drag_data(struct input *input, const char *mime_type,
3792                         data_func_t func, void *data)
3793 {
3794         data_offer_receive_data(input->drag_offer, mime_type, func, data);
3795         input->drag_offer->x = input->sx;
3796         input->drag_offer->y = input->sy;
3797 }
3798
3799 int
3800 input_receive_drag_data_to_fd(struct input *input,
3801                               const char *mime_type, int fd)
3802 {
3803         if (input->drag_offer)
3804                 wl_data_offer_receive(input->drag_offer->offer, mime_type, fd);
3805
3806         return 0;
3807 }
3808
3809 int
3810 input_receive_selection_data(struct input *input, const char *mime_type,
3811                              data_func_t func, void *data)
3812 {
3813         char **p;
3814
3815         if (input->selection_offer == NULL)
3816                 return -1;
3817
3818         for (p = input->selection_offer->types.data; *p; p++)
3819                 if (strcmp(mime_type, *p) == 0)
3820                         break;
3821
3822         if (*p == NULL)
3823                 return -1;
3824
3825         data_offer_receive_data(input->selection_offer,
3826                                 mime_type, func, data);
3827         return 0;
3828 }
3829
3830 int
3831 input_receive_selection_data_to_fd(struct input *input,
3832                                    const char *mime_type, int fd)
3833 {
3834         if (input->selection_offer)
3835                 wl_data_offer_receive(input->selection_offer->offer,
3836                                       mime_type, fd);
3837
3838         return 0;
3839 }
3840
3841 void
3842 window_move(struct window *window, struct input *input, uint32_t serial)
3843 {
3844         if (!window->shell_surface)
3845                 return;
3846
3847         wl_shell_surface_move(window->shell_surface, input->seat, serial);
3848 }
3849
3850 void
3851 window_touch_move(struct window *window, struct input *input, uint32_t serial)
3852 {
3853         if (!window->shell_surface)
3854                 return;
3855
3856         wl_shell_surface_move(window->shell_surface, input->seat,
3857                               window->display->serial);
3858 }
3859
3860 static void
3861 surface_set_synchronized(struct surface *surface)
3862 {
3863         if (!surface->subsurface)
3864                 return;
3865
3866         if (surface->synchronized)
3867                 return;
3868
3869         wl_subsurface_set_sync(surface->subsurface);
3870         surface->synchronized = 1;
3871 }
3872
3873 static void
3874 surface_set_synchronized_default(struct surface *surface)
3875 {
3876         if (!surface->subsurface)
3877                 return;
3878
3879         if (surface->synchronized == surface->synchronized_default)
3880                 return;
3881
3882         if (surface->synchronized_default)
3883                 wl_subsurface_set_sync(surface->subsurface);
3884         else
3885                 wl_subsurface_set_desync(surface->subsurface);
3886
3887         surface->synchronized = surface->synchronized_default;
3888 }
3889
3890 static void
3891 surface_resize(struct surface *surface)
3892 {
3893         struct widget *widget = surface->widget;
3894         struct wl_compositor *compositor = widget->window->display->compositor;
3895
3896         if (surface->input_region) {
3897                 wl_region_destroy(surface->input_region);
3898                 surface->input_region = NULL;
3899         }
3900
3901         if (surface->opaque_region)
3902                 wl_region_destroy(surface->opaque_region);
3903
3904         surface->opaque_region = wl_compositor_create_region(compositor);
3905
3906         if (widget->resize_handler)
3907                 widget->resize_handler(widget,
3908                                        widget->allocation.width,
3909                                        widget->allocation.height,
3910                                        widget->user_data);
3911
3912         if (surface->subsurface &&
3913             (surface->allocation.x != widget->allocation.x ||
3914              surface->allocation.y != widget->allocation.y)) {
3915                 wl_subsurface_set_position(surface->subsurface,
3916                                            widget->allocation.x,
3917                                            widget->allocation.y);
3918         }
3919         if (surface->allocation.width != widget->allocation.width ||
3920             surface->allocation.height != widget->allocation.height) {
3921                 window_schedule_redraw(widget->window);
3922         }
3923         surface->allocation = widget->allocation;
3924
3925         if (widget->opaque)
3926                 wl_region_add(surface->opaque_region, 0, 0,
3927                               widget->allocation.width,
3928                               widget->allocation.height);
3929 }
3930
3931 static void
3932 hack_prevent_EGL_sub_surface_deadlock(struct window *window)
3933 {
3934         /*
3935          * This hack should be removed, when EGL respects
3936          * eglSwapInterval(0).
3937          *
3938          * If this window has sub-surfaces, especially a free-running
3939          * EGL-widget, we need to post the parent surface once with
3940          * all the old state to guarantee, that the EGL-widget will
3941          * receive its frame callback soon. Otherwise, a forced call
3942          * to eglSwapBuffers may end up blocking, waiting for a frame
3943          * event that will never come, because we will commit the parent
3944          * surface with all new state only after eglSwapBuffers returns.
3945          *
3946          * This assumes, that:
3947          * 1. When the EGL widget's resize hook is called, it pauses.
3948          * 2. When the EGL widget's redraw hook is called, it forces a
3949          *    repaint and a call to eglSwapBuffers(), and maybe resumes.
3950          * In a single threaded application condition 1 is a no-op.
3951          *
3952          * XXX: This should actually be after the surface_resize() calls,
3953          * but cannot, because then it would commit the incomplete state
3954          * accumulated from the widget resize hooks.
3955          */
3956         if (window->subsurface_list.next != &window->main_surface->link ||
3957             window->subsurface_list.prev != &window->main_surface->link)
3958                 wl_surface_commit(window->main_surface->surface);
3959 }
3960
3961 static void
3962 idle_resize(struct window *window)
3963 {
3964         struct surface *surface;
3965
3966         window->resize_needed = 0;
3967         window->redraw_needed = 1;
3968
3969         DBG("from %dx%d to %dx%d\n",
3970             window->main_surface->server_allocation.width,
3971             window->main_surface->server_allocation.height,
3972             window->pending_allocation.width,
3973             window->pending_allocation.height);
3974
3975         hack_prevent_EGL_sub_surface_deadlock(window);
3976
3977         widget_set_allocation(window->main_surface->widget,
3978                               window->pending_allocation.x,
3979                               window->pending_allocation.y,
3980                               window->pending_allocation.width,
3981                               window->pending_allocation.height);
3982
3983         surface_resize(window->main_surface);
3984
3985         /* The main surface is in the list, too. Main surface's
3986          * resize_handler is responsible for calling widget_set_allocation()
3987          * on all sub-surface root widgets, so they will be resized
3988          * properly.
3989          */
3990         wl_list_for_each(surface, &window->subsurface_list, link) {
3991                 if (surface == window->main_surface)
3992                         continue;
3993
3994                 surface_set_synchronized(surface);
3995                 surface_resize(surface);
3996         }
3997 }
3998
3999 void
4000 window_schedule_resize(struct window *window, int width, int height)
4001 {
4002         window->pending_allocation.x = 0;
4003         window->pending_allocation.y = 0;
4004         window->pending_allocation.width = width;
4005         window->pending_allocation.height = height;
4006
4007         if (window->min_allocation.width == 0)
4008                 window->min_allocation = window->pending_allocation;
4009         if (window->pending_allocation.width < window->min_allocation.width)
4010                 window->pending_allocation.width = window->min_allocation.width;
4011         if (window->pending_allocation.height < window->min_allocation.height)
4012                 window->pending_allocation.height = window->min_allocation.height;
4013
4014         window->resize_needed = 1;
4015         window_schedule_redraw(window);
4016 }
4017
4018 void
4019 widget_schedule_resize(struct widget *widget, int32_t width, int32_t height)
4020 {
4021         window_schedule_resize(widget->window, width, height);
4022 }
4023
4024 static void
4025 handle_ping(void *data, struct wl_shell_surface *shell_surface,
4026                                                         uint32_t serial)
4027 {
4028         wl_shell_surface_pong(shell_surface, serial);
4029 }
4030
4031 static void
4032 handle_configure(void *data, struct wl_shell_surface *shell_surface,
4033                  uint32_t edges, int32_t width, int32_t height)
4034 {
4035         struct window *window = data;
4036
4037         window->resize_edges = edges;
4038         window_schedule_resize(window, width, height);
4039 }
4040
4041 static void
4042 menu_destroy(struct menu *menu)
4043 {
4044         widget_destroy(menu->widget);
4045         window_destroy(menu->window);
4046         free(menu);
4047 }
4048
4049 static void
4050 handle_popup_done(void *data, struct wl_shell_surface *shell_surface)
4051 {
4052         struct window *window = data;
4053         struct menu *menu = window->main_surface->widget->user_data;
4054
4055         /* FIXME: Need more context in this event, at least the input
4056          * device.  Or just use wl_callback.  And this really needs to
4057          * be a window vfunc that the menu can set.  And we need the
4058          * time. */
4059
4060         input_ungrab(menu->input);
4061         menu_destroy(menu);
4062 }
4063
4064 static const struct wl_shell_surface_listener shell_surface_listener = {
4065         handle_ping,
4066         handle_configure,
4067         handle_popup_done
4068 };
4069
4070 void
4071 window_get_allocation(struct window *window,
4072                       struct rectangle *allocation)
4073 {
4074         *allocation = window->main_surface->allocation;
4075 }
4076
4077 static void
4078 widget_redraw(struct widget *widget)
4079 {
4080         struct widget *child;
4081
4082         if (widget->redraw_handler)
4083                 widget->redraw_handler(widget, widget->user_data);
4084         wl_list_for_each(child, &widget->child_list, link)
4085                 widget_redraw(child);
4086 }
4087
4088 static void
4089 frame_callback(void *data, struct wl_callback *callback, uint32_t time)
4090 {
4091         struct surface *surface = data;
4092
4093         assert(callback == surface->frame_cb);
4094         DBG_OBJ(callback, "done\n");
4095         wl_callback_destroy(callback);
4096         surface->frame_cb = NULL;
4097
4098         surface->last_time = time;
4099
4100         if (surface->redraw_needed || surface->window->redraw_needed) {
4101                 DBG_OBJ(surface->surface, "window_schedule_redraw_task\n");
4102                 window_schedule_redraw_task(surface->window);
4103         }
4104 }
4105
4106 static const struct wl_callback_listener listener = {
4107         frame_callback
4108 };
4109
4110 static void
4111 surface_redraw(struct surface *surface)
4112 {
4113         DBG_OBJ(surface->surface, "begin\n");
4114
4115         if (!surface->window->redraw_needed && !surface->redraw_needed)
4116                 return;
4117
4118         /* Whole-window redraw forces a redraw even if the previous has
4119          * not yet hit the screen.
4120          */
4121         if (surface->frame_cb) {
4122                 if (!surface->window->redraw_needed)
4123                         return;
4124
4125                 DBG_OBJ(surface->frame_cb, "cancelled\n");
4126                 wl_callback_destroy(surface->frame_cb);
4127         }
4128
4129         surface->frame_cb = wl_surface_frame(surface->surface);
4130         wl_callback_add_listener(surface->frame_cb, &listener, surface);
4131         DBG_OBJ(surface->frame_cb, "new\n");
4132
4133         surface->redraw_needed = 0;
4134         DBG_OBJ(surface->surface, "-> widget_redraw\n");
4135         widget_redraw(surface->widget);
4136         DBG_OBJ(surface->surface, "done\n");
4137 }
4138
4139 static void
4140 idle_redraw(struct task *task, uint32_t events)
4141 {
4142         struct window *window = container_of(task, struct window, redraw_task);
4143         struct surface *surface;
4144
4145         DBG(" --------- \n");
4146
4147         wl_list_init(&window->redraw_task.link);
4148         window->redraw_task_scheduled = 0;
4149
4150         if (window->resize_needed) {
4151                 /* throttle resizing to the main surface display */
4152                 if (window->main_surface->frame_cb) {
4153                         DBG_OBJ(window->main_surface->frame_cb, "pending\n");
4154                         return;
4155                 }
4156
4157                 idle_resize(window);
4158         }
4159
4160         wl_list_for_each(surface, &window->subsurface_list, link)
4161                 surface_redraw(surface);
4162
4163         window->redraw_needed = 0;
4164         window_flush(window);
4165
4166         wl_list_for_each(surface, &window->subsurface_list, link)
4167                 surface_set_synchronized_default(surface);
4168 }
4169
4170 static void
4171 window_schedule_redraw_task(struct window *window)
4172 {
4173         if (window->configure_requests)
4174                 return;
4175         if (!window->redraw_task_scheduled) {
4176                 window->redraw_task.run = idle_redraw;
4177                 display_defer(window->display, &window->redraw_task);
4178                 window->redraw_task_scheduled = 1;
4179         }
4180 }
4181
4182 void
4183 window_schedule_redraw(struct window *window)
4184 {
4185         struct surface *surface;
4186
4187         DBG_OBJ(window->main_surface->surface, "window %p\n", window);
4188
4189         wl_list_for_each(surface, &window->subsurface_list, link)
4190                 surface->redraw_needed = 1;
4191
4192         window_schedule_redraw_task(window);
4193 }
4194
4195 int
4196 window_is_fullscreen(struct window *window)
4197 {
4198         return window->type == TYPE_FULLSCREEN;
4199 }
4200
4201 static void
4202 configure_request_completed(void *data, struct wl_callback *callback, uint32_t  time)
4203 {
4204         struct window *window = data;
4205
4206         wl_callback_destroy(callback);
4207         window->configure_requests--;
4208
4209         if (!window->configure_requests)
4210                 window_schedule_redraw(window);
4211 }
4212
4213 static struct wl_callback_listener configure_request_listener = {
4214         configure_request_completed,
4215 };
4216
4217 static void
4218 window_defer_redraw_until_configure(struct window* window)
4219 {
4220         struct wl_callback *callback;
4221
4222         if (window->redraw_task_scheduled) {
4223                 wl_list_remove(&window->redraw_task.link);
4224                 window->redraw_task_scheduled = 0;
4225         }
4226
4227         callback = wl_display_sync(window->display->display);
4228         wl_callback_add_listener(callback, &configure_request_listener, window);
4229         window->configure_requests++;
4230 }
4231
4232 void
4233 window_set_fullscreen(struct window *window, int fullscreen)
4234 {
4235         if (!window->display->shell)
4236                 return;
4237
4238         if ((window->type == TYPE_FULLSCREEN) == fullscreen)
4239                 return;
4240
4241         if (fullscreen) {
4242                 window->saved_type = window->type;
4243                 if (window->type == TYPE_TOPLEVEL) {
4244                         window->saved_allocation = window->main_surface->allocation;
4245                 }
4246                 window->type = TYPE_FULLSCREEN;
4247                 wl_shell_surface_set_fullscreen(window->shell_surface,
4248                                                 window->fullscreen_method,
4249                                                 0, NULL);
4250                 window_defer_redraw_until_configure (window);
4251         } else {
4252                 if (window->saved_type == TYPE_MAXIMIZED) {
4253                         window_set_maximized(window, 1);
4254                 } else {
4255                         window->type = TYPE_TOPLEVEL;
4256                         wl_shell_surface_set_toplevel(window->shell_surface);
4257                         window_schedule_resize(window,
4258                                                    window->saved_allocation.width,
4259                                                    window->saved_allocation.height);
4260                 }
4261
4262         }
4263 }
4264
4265 void
4266 window_set_fullscreen_method(struct window *window,
4267                              enum wl_shell_surface_fullscreen_method method)
4268 {
4269         window->fullscreen_method = method;
4270 }
4271
4272 int
4273 window_is_maximized(struct window *window)
4274 {
4275         return window->type == TYPE_MAXIMIZED;
4276 }
4277
4278 void
4279 window_set_maximized(struct window *window, int maximized)
4280 {
4281         if (!window->display->shell)
4282                 return;
4283
4284         if ((window->type == TYPE_MAXIMIZED) == maximized)
4285                 return;
4286
4287         if (window->type == TYPE_TOPLEVEL) {
4288                 window->saved_allocation = window->main_surface->allocation;
4289                 wl_shell_surface_set_maximized(window->shell_surface, NULL);
4290                 window->type = TYPE_MAXIMIZED;
4291                 window_defer_redraw_until_configure(window);
4292         } else if (window->type == TYPE_FULLSCREEN) {
4293                 wl_shell_surface_set_maximized(window->shell_surface, NULL);
4294                 window->type = TYPE_MAXIMIZED;
4295                 window_defer_redraw_until_configure(window);
4296         } else {
4297                 wl_shell_surface_set_toplevel(window->shell_surface);
4298                 window->type = TYPE_TOPLEVEL;
4299                 window_schedule_resize(window,
4300                                        window->saved_allocation.width,
4301                                        window->saved_allocation.height);
4302         }
4303 }
4304
4305 void
4306 window_set_user_data(struct window *window, void *data)
4307 {
4308         window->user_data = data;
4309 }
4310
4311 void *
4312 window_get_user_data(struct window *window)
4313 {
4314         return window->user_data;
4315 }
4316
4317 void
4318 window_set_key_handler(struct window *window,
4319                        window_key_handler_t handler)
4320 {
4321         window->key_handler = handler;
4322 }
4323
4324 void
4325 window_set_keyboard_focus_handler(struct window *window,
4326                                   window_keyboard_focus_handler_t handler)
4327 {
4328         window->keyboard_focus_handler = handler;
4329 }
4330
4331 void
4332 window_set_data_handler(struct window *window, window_data_handler_t handler)
4333 {
4334         window->data_handler = handler;
4335 }
4336
4337 void
4338 window_set_drop_handler(struct window *window, window_drop_handler_t handler)
4339 {
4340         window->drop_handler = handler;
4341 }
4342
4343 void
4344 window_set_close_handler(struct window *window,
4345                          window_close_handler_t handler)
4346 {
4347         window->close_handler = handler;
4348 }
4349
4350 void
4351 window_set_fullscreen_handler(struct window *window,
4352                               window_fullscreen_handler_t handler)
4353 {
4354         window->fullscreen_handler = handler;
4355 }
4356
4357 void
4358 window_set_output_handler(struct window *window,
4359                           window_output_handler_t handler)
4360 {
4361         window->output_handler = handler;
4362 }
4363
4364 void
4365 window_set_title(struct window *window, const char *title)
4366 {
4367         free(window->title);
4368         window->title = strdup(title);
4369         if (window->shell_surface)
4370                 wl_shell_surface_set_title(window->shell_surface, title);
4371 }
4372
4373 const char *
4374 window_get_title(struct window *window)
4375 {
4376         return window->title;
4377 }
4378
4379 void
4380 window_set_text_cursor_position(struct window *window, int32_t x, int32_t y)
4381 {
4382         struct text_cursor_position *text_cursor_position =
4383                                         window->display->text_cursor_position;
4384
4385         if (!text_cursor_position)
4386                 return;
4387
4388         text_cursor_position_notify(text_cursor_position,
4389                                     window->main_surface->surface,
4390                                     wl_fixed_from_int(x),
4391                                     wl_fixed_from_int(y));
4392 }
4393
4394 void
4395 window_damage(struct window *window, int32_t x, int32_t y,
4396               int32_t width, int32_t height)
4397 {
4398         wl_surface_damage(window->main_surface->surface, x, y, width, height);
4399 }
4400
4401 static void
4402 surface_enter(void *data,
4403               struct wl_surface *wl_surface, struct wl_output *wl_output)
4404 {
4405         struct window *window = data;
4406         struct output *output;
4407         struct output *output_found = NULL;
4408         struct window_output *window_output;
4409
4410         wl_list_for_each(output, &window->display->output_list, link) {
4411                 if (output->output == wl_output) {
4412                         output_found = output;
4413                         break;
4414                 }
4415         }
4416
4417         if (!output_found)
4418                 return;
4419
4420         window_output = xmalloc(sizeof *window_output);
4421         window_output->output = output_found;
4422
4423         wl_list_insert (&window->window_output_list, &window_output->link);
4424
4425         if (window->output_handler)
4426                 window->output_handler(window, output_found, 1,
4427                                        window->user_data);
4428 }
4429
4430 static void
4431 surface_leave(void *data,
4432               struct wl_surface *wl_surface, struct wl_output *output)
4433 {
4434         struct window *window = data;
4435         struct window_output *window_output;
4436         struct window_output *window_output_found = NULL;
4437
4438         wl_list_for_each(window_output, &window->window_output_list, link) {
4439                 if (window_output->output->output == output) {
4440                         window_output_found = window_output;
4441                         break;
4442                 }
4443         }
4444
4445         if (window_output_found) {
4446                 wl_list_remove(&window_output_found->link);
4447
4448                 if (window->output_handler)
4449                         window->output_handler(window, window_output->output,
4450                                                0, window->user_data);
4451
4452                 free(window_output_found);
4453         }
4454 }
4455
4456 static const struct wl_surface_listener surface_listener = {
4457         surface_enter,
4458         surface_leave
4459 };
4460
4461 static struct surface *
4462 surface_create(struct window *window)
4463 {
4464         struct display *display = window->display;
4465         struct surface *surface;
4466
4467         surface = xmalloc(sizeof *surface);
4468         memset(surface, 0, sizeof *surface);
4469         if (!surface)
4470                 return NULL;
4471
4472         surface->window = window;
4473         surface->surface = wl_compositor_create_surface(display->compositor);
4474         surface->buffer_scale = 1;
4475         wl_surface_add_listener(surface->surface, &surface_listener, window);
4476
4477         wl_list_insert(&window->subsurface_list, &surface->link);
4478
4479         return surface;
4480 }
4481
4482 static struct window *
4483 window_create_internal(struct display *display,
4484                        struct window *parent, int type)
4485 {
4486         struct window *window;
4487         struct surface *surface;
4488
4489         window = xzalloc(sizeof *window);
4490         wl_list_init(&window->subsurface_list);
4491         window->display = display;
4492         window->parent = parent;
4493
4494         surface = surface_create(window);
4495         window->main_surface = surface;
4496
4497         if (type != TYPE_CUSTOM && display->shell) {
4498                 window->shell_surface =
4499                         wl_shell_get_shell_surface(display->shell,
4500                                                    surface->surface);
4501                 fail_on_null(window->shell_surface);
4502         }
4503
4504         window->type = type;
4505         window->fullscreen_method = WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT;
4506         window->configure_requests = 0;
4507         window->preferred_format = WINDOW_PREFERRED_FORMAT_NONE;
4508
4509         if (display->argb_device)
4510 #ifdef HAVE_CAIRO_EGL
4511                 surface->buffer_type = WINDOW_BUFFER_TYPE_EGL_WINDOW;
4512 #else
4513                 surface->buffer_type = WINDOW_BUFFER_TYPE_SHM;
4514 #endif
4515         else
4516                 surface->buffer_type = WINDOW_BUFFER_TYPE_SHM;
4517
4518         wl_surface_set_user_data(surface->surface, window);
4519         wl_list_insert(display->window_list.prev, &window->link);
4520         wl_list_init(&window->redraw_task.link);
4521
4522         if (window->shell_surface) {
4523                 wl_shell_surface_set_user_data(window->shell_surface, window);
4524                 wl_shell_surface_add_listener(window->shell_surface,
4525                                               &shell_surface_listener, window);
4526         }
4527
4528         wl_list_init (&window->window_output_list);
4529
4530         return window;
4531 }
4532
4533 struct window *
4534 window_create(struct display *display)
4535 {
4536         return window_create_internal(display, NULL, TYPE_NONE);
4537 }
4538
4539 struct window *
4540 window_create_custom(struct display *display)
4541 {
4542         return window_create_internal(display, NULL, TYPE_CUSTOM);
4543 }
4544
4545 struct window *
4546 window_create_transient(struct display *display, struct window *parent,
4547                         int32_t x, int32_t y, uint32_t flags)
4548 {
4549         struct window *window;
4550
4551         window = window_create_internal(parent->display,
4552                                         parent, TYPE_TRANSIENT);
4553
4554         window->x = x;
4555         window->y = y;
4556
4557         if (display->shell)
4558                 wl_shell_surface_set_transient(
4559                         window->shell_surface,
4560                         window->parent->main_surface->surface,
4561                         window->x, window->y, flags);
4562
4563         return window;
4564 }
4565
4566 static void
4567 menu_set_item(struct menu *menu, int sy)
4568 {
4569         int next;
4570
4571         next = (sy - 8) / 20;
4572         if (menu->current != next) {
4573                 menu->current = next;
4574                 widget_schedule_redraw(menu->widget);
4575         }
4576 }
4577
4578 static int
4579 menu_motion_handler(struct widget *widget,
4580                     struct input *input, uint32_t time,
4581                     float x, float y, void *data)
4582 {
4583         struct menu *menu = data;
4584
4585         if (widget == menu->widget)
4586                 menu_set_item(data, y);
4587
4588         return CURSOR_LEFT_PTR;
4589 }
4590
4591 static int
4592 menu_enter_handler(struct widget *widget,
4593                    struct input *input, float x, float y, void *data)
4594 {
4595         struct menu *menu = data;
4596
4597         if (widget == menu->widget)
4598                 menu_set_item(data, y);
4599
4600         return CURSOR_LEFT_PTR;
4601 }
4602
4603 static void
4604 menu_leave_handler(struct widget *widget, struct input *input, void *data)
4605 {
4606         struct menu *menu = data;
4607
4608         if (widget == menu->widget)
4609                 menu_set_item(data, -200);
4610 }
4611
4612 static void
4613 menu_button_handler(struct widget *widget,
4614                     struct input *input, uint32_t time,
4615                     uint32_t button, enum wl_pointer_button_state state,
4616                     void *data)
4617
4618 {
4619         struct menu *menu = data;
4620
4621         if (state == WL_POINTER_BUTTON_STATE_RELEASED &&
4622             (menu->release_count > 0 || time - menu->time > 500)) {
4623                 /* Either relase after press-drag-release or
4624                  * click-motion-click. */
4625                 menu->func(menu->window->parent,
4626                            menu->current, menu->window->parent->user_data);
4627                 input_ungrab(input);
4628                 menu_destroy(menu);
4629         } else if (state == WL_POINTER_BUTTON_STATE_RELEASED) {
4630                 menu->release_count++;
4631         }
4632 }
4633
4634 static void
4635 menu_redraw_handler(struct widget *widget, void *data)
4636 {
4637         cairo_t *cr;
4638         const int32_t r = 3, margin = 3;
4639         struct menu *menu = data;
4640         int32_t width, height, i;
4641
4642         cr = widget_cairo_create(widget);
4643         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
4644         cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
4645         cairo_paint(cr);
4646
4647         width = widget->allocation.width;
4648         height = widget->allocation.height;
4649         rounded_rect(cr, 0, 0, width, height, r);
4650
4651         cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
4652         cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8);
4653         cairo_fill(cr);
4654
4655         for (i = 0; i < menu->count; i++) {
4656                 if (i == menu->current) {
4657                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
4658                         cairo_rectangle(cr, margin, i * 20 + margin,
4659                                         width - 2 * margin, 20);
4660                         cairo_fill(cr);
4661                         cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
4662                         cairo_move_to(cr, 10, i * 20 + 16);
4663                         cairo_show_text(cr, menu->entries[i]);
4664                 } else {
4665                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
4666                         cairo_move_to(cr, 10, i * 20 + 16);
4667                         cairo_show_text(cr, menu->entries[i]);
4668                 }
4669         }
4670
4671         cairo_destroy(cr);
4672 }
4673
4674 void
4675 window_show_menu(struct display *display,
4676                  struct input *input, uint32_t time, struct window *parent,
4677                  int32_t x, int32_t y,
4678                  menu_func_t func, const char **entries, int count)
4679 {
4680         struct window *window;
4681         struct menu *menu;
4682         const int32_t margin = 3;
4683
4684         menu = malloc(sizeof *menu);
4685         if (!menu)
4686                 return;
4687
4688         window = window_create_internal(parent->display, parent, TYPE_MENU);
4689         if (!window) {
4690                 free(menu);
4691                 return;
4692         }
4693
4694         menu->window = window;
4695         menu->widget = window_add_widget(menu->window, menu);
4696         window_set_buffer_scale (menu->window, window_get_buffer_scale (parent));
4697         window_set_buffer_transform (menu->window, window_get_buffer_transform (parent));
4698         menu->entries = entries;
4699         menu->count = count;
4700         menu->release_count = 0;
4701         menu->current = -1;
4702         menu->time = time;
4703         menu->func = func;
4704         menu->input = input;
4705         window->type = TYPE_MENU;
4706         window->x = x;
4707         window->y = y;
4708
4709         input_ungrab(input);
4710         wl_shell_surface_set_popup(window->shell_surface, input->seat,
4711                                    display_get_serial(window->display),
4712                                    window->parent->main_surface->surface,
4713                                    window->x, window->y, 0);
4714
4715         widget_set_redraw_handler(menu->widget, menu_redraw_handler);
4716         widget_set_enter_handler(menu->widget, menu_enter_handler);
4717         widget_set_leave_handler(menu->widget, menu_leave_handler);
4718         widget_set_motion_handler(menu->widget, menu_motion_handler);
4719         widget_set_button_handler(menu->widget, menu_button_handler);
4720
4721         input_grab(input, menu->widget, 0);
4722         window_schedule_resize(window, 200, count * 20 + margin * 2);
4723 }
4724
4725 void
4726 window_set_buffer_type(struct window *window, enum window_buffer_type type)
4727 {
4728         window->main_surface->buffer_type = type;
4729 }
4730
4731 void
4732 window_set_preferred_format(struct window *window,
4733                             enum preferred_format format)
4734 {
4735         window->preferred_format = format;
4736 }
4737
4738 struct widget *
4739 window_add_subsurface(struct window *window, void *data,
4740                       enum subsurface_mode default_mode)
4741 {
4742         struct widget *widget;
4743         struct surface *surface;
4744         struct wl_surface *parent;
4745         struct wl_subcompositor *subcompo = window->display->subcompositor;
4746
4747         surface = surface_create(window);
4748         widget = widget_create(window, surface, data);
4749         wl_list_init(&widget->link);
4750         surface->widget = widget;
4751
4752         parent = window->main_surface->surface;
4753         surface->subsurface = wl_subcompositor_get_subsurface(subcompo,
4754                                                               surface->surface,
4755                                                               parent);
4756         surface->synchronized = 1;
4757
4758         switch (default_mode) {
4759         case SUBSURFACE_SYNCHRONIZED:
4760                 surface->synchronized_default = 1;
4761                 break;
4762         case SUBSURFACE_DESYNCHRONIZED:
4763                 surface->synchronized_default = 0;
4764                 break;
4765         default:
4766                 assert(!"bad enum subsurface_mode");
4767         }
4768
4769         return widget;
4770 }
4771
4772 static void
4773 display_handle_geometry(void *data,
4774                         struct wl_output *wl_output,
4775                         int x, int y,
4776                         int physical_width,
4777                         int physical_height,
4778                         int subpixel,
4779                         const char *make,
4780                         const char *model,
4781                         int transform)
4782 {
4783         struct output *output = data;
4784
4785         output->allocation.x = x;
4786         output->allocation.y = y;
4787         output->transform = transform;
4788 }
4789
4790 static void
4791 display_handle_done(void *data,
4792                      struct wl_output *wl_output)
4793 {
4794 }
4795
4796 static void
4797 display_handle_scale(void *data,
4798                      struct wl_output *wl_output,
4799                      int32_t scale)
4800 {
4801         struct output *output = data;
4802
4803         output->scale = scale;
4804 }
4805
4806 static void
4807 display_handle_mode(void *data,
4808                     struct wl_output *wl_output,
4809                     uint32_t flags,
4810                     int width,
4811                     int height,
4812                     int refresh)
4813 {
4814         struct output *output = data;
4815         struct display *display = output->display;
4816
4817         if (flags & WL_OUTPUT_MODE_CURRENT) {
4818                 output->allocation.width = width;
4819                 output->allocation.height = height;
4820                 if (display->output_configure_handler)
4821                         (*display->output_configure_handler)(
4822                                                 output, display->user_data);
4823         }
4824 }
4825
4826 static const struct wl_output_listener output_listener = {
4827         display_handle_geometry,
4828         display_handle_mode,
4829         display_handle_done,
4830         display_handle_scale
4831 };
4832
4833 static void
4834 display_add_output(struct display *d, uint32_t id)
4835 {
4836         struct output *output;
4837
4838         output = xzalloc(sizeof *output);
4839         output->display = d;
4840         output->scale = 1;
4841         output->output =
4842                 wl_registry_bind(d->registry, id, &wl_output_interface, 2);
4843         wl_list_insert(d->output_list.prev, &output->link);
4844
4845         wl_output_add_listener(output->output, &output_listener, output);
4846 }
4847
4848 static void
4849 output_destroy(struct output *output)
4850 {
4851         if (output->destroy_handler)
4852                 (*output->destroy_handler)(output, output->user_data);
4853
4854         wl_output_destroy(output->output);
4855         wl_list_remove(&output->link);
4856         free(output);
4857 }
4858
4859 void
4860 display_set_global_handler(struct display *display,
4861                            display_global_handler_t handler)
4862 {
4863         struct global *global;
4864
4865         display->global_handler = handler;
4866         if (!handler)
4867                 return;
4868
4869         wl_list_for_each(global, &display->global_list, link)
4870                 display->global_handler(display,
4871                                         global->name, global->interface,
4872                                         global->version, display->user_data);
4873 }
4874
4875 void
4876 display_set_output_configure_handler(struct display *display,
4877                                      display_output_handler_t handler)
4878 {
4879         struct output *output;
4880
4881         display->output_configure_handler = handler;
4882         if (!handler)
4883                 return;
4884
4885         wl_list_for_each(output, &display->output_list, link) {
4886                 if (output->allocation.width == 0 &&
4887                     output->allocation.height == 0)
4888                         continue;
4889
4890                 (*display->output_configure_handler)(output,
4891                                                      display->user_data);
4892         }
4893 }
4894
4895 void
4896 output_set_user_data(struct output *output, void *data)
4897 {
4898         output->user_data = data;
4899 }
4900
4901 void *
4902 output_get_user_data(struct output *output)
4903 {
4904         return output->user_data;
4905 }
4906
4907 void
4908 output_set_destroy_handler(struct output *output,
4909                            display_output_handler_t handler)
4910 {
4911         output->destroy_handler = handler;
4912         /* FIXME: implement this, once we have way to remove outputs */
4913 }
4914
4915 void
4916 output_get_allocation(struct output *output, struct rectangle *base)
4917 {
4918         struct rectangle allocation = output->allocation;
4919
4920         switch (output->transform) {
4921         case WL_OUTPUT_TRANSFORM_90:
4922         case WL_OUTPUT_TRANSFORM_270:
4923         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
4924         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
4925                 /* Swap width and height */
4926                 allocation.width = output->allocation.height;
4927                 allocation.height = output->allocation.width;
4928                 break;
4929         }
4930
4931         *base = allocation;
4932 }
4933
4934 struct wl_output *
4935 output_get_wl_output(struct output *output)
4936 {
4937         return output->output;
4938 }
4939
4940 enum wl_output_transform
4941 output_get_transform(struct output *output)
4942 {
4943         return output->transform;
4944 }
4945
4946 uint32_t
4947 output_get_scale(struct output *output)
4948 {
4949         return output->scale;
4950 }
4951
4952 static void
4953 fini_xkb(struct input *input)
4954 {
4955         xkb_state_unref(input->xkb.state);
4956         xkb_map_unref(input->xkb.keymap);
4957 }
4958
4959 #define MAX(a,b) ((a) > (b) ? a : b)
4960
4961 static void
4962 display_add_input(struct display *d, uint32_t id)
4963 {
4964         struct input *input;
4965
4966         input = xzalloc(sizeof *input);
4967         input->display = d;
4968         input->seat = wl_registry_bind(d->registry, id, &wl_seat_interface,
4969                                        MAX(d->seat_version, 3));
4970         input->touch_focus = NULL;
4971         input->pointer_focus = NULL;
4972         input->keyboard_focus = NULL;
4973         wl_list_init(&input->touch_point_list);
4974         wl_list_insert(d->input_list.prev, &input->link);
4975
4976         wl_seat_add_listener(input->seat, &seat_listener, input);
4977         wl_seat_set_user_data(input->seat, input);
4978
4979         input->data_device =
4980                 wl_data_device_manager_get_data_device(d->data_device_manager,
4981                                                        input->seat);
4982         wl_data_device_add_listener(input->data_device, &data_device_listener,
4983                                     input);
4984
4985         input->pointer_surface = wl_compositor_create_surface(d->compositor);
4986
4987         input->repeat_timer_fd = timerfd_create(CLOCK_MONOTONIC,
4988                                                 TFD_CLOEXEC | TFD_NONBLOCK);
4989         input->repeat_task.run = keyboard_repeat_func;
4990         display_watch_fd(d, input->repeat_timer_fd,
4991                          EPOLLIN, &input->repeat_task);
4992 }
4993
4994 static void
4995 input_destroy(struct input *input)
4996 {
4997         input_remove_keyboard_focus(input);
4998         input_remove_pointer_focus(input);
4999
5000         if (input->drag_offer)
5001                 data_offer_destroy(input->drag_offer);
5002
5003         if (input->selection_offer)
5004                 data_offer_destroy(input->selection_offer);
5005
5006         wl_data_device_destroy(input->data_device);
5007
5008         if (input->display->seat_version >= 3) {
5009                 if (input->pointer)
5010                         wl_pointer_release(input->pointer);
5011                 if (input->keyboard)
5012                         wl_keyboard_release(input->keyboard);
5013         }
5014
5015         fini_xkb(input);
5016
5017         wl_surface_destroy(input->pointer_surface);
5018
5019         wl_list_remove(&input->link);
5020         wl_seat_destroy(input->seat);
5021         close(input->repeat_timer_fd);
5022         free(input);
5023 }
5024
5025 static void
5026 init_workspace_manager(struct display *d, uint32_t id)
5027 {
5028         d->workspace_manager =
5029                 wl_registry_bind(d->registry, id,
5030                                  &workspace_manager_interface, 1);
5031         if (d->workspace_manager != NULL)
5032                 workspace_manager_add_listener(d->workspace_manager,
5033                                                &workspace_manager_listener,
5034                                                d);
5035 }
5036
5037 static void
5038 shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
5039 {
5040         struct display *d = data;
5041
5042         if (format == WL_SHM_FORMAT_RGB565)
5043                 d->has_rgb565 = 1;
5044 }
5045
5046 struct wl_shm_listener shm_listener = {
5047         shm_format
5048 };
5049
5050 static void
5051 registry_handle_global(void *data, struct wl_registry *registry, uint32_t id,
5052                        const char *interface, uint32_t version)
5053 {
5054         struct display *d = data;
5055         struct global *global;
5056
5057         global = xmalloc(sizeof *global);
5058         global->name = id;
5059         global->interface = strdup(interface);
5060         global->version = version;
5061         wl_list_insert(d->global_list.prev, &global->link);
5062
5063         if (strcmp(interface, "wl_compositor") == 0) {
5064                 d->compositor = wl_registry_bind(registry, id,
5065                                                  &wl_compositor_interface, 3);
5066         } else if (strcmp(interface, "wl_output") == 0) {
5067                 display_add_output(d, id);
5068         } else if (strcmp(interface, "wl_seat") == 0) {
5069                 d->seat_version = version;
5070                 display_add_input(d, id);
5071         } else if (strcmp(interface, "wl_shell") == 0) {
5072                 d->shell = wl_registry_bind(registry,
5073                                             id, &wl_shell_interface, 1);
5074         } else if (strcmp(interface, "wl_shm") == 0) {
5075                 d->shm = wl_registry_bind(registry, id, &wl_shm_interface, 1);
5076                 wl_shm_add_listener(d->shm, &shm_listener, d);
5077         } else if (strcmp(interface, "wl_data_device_manager") == 0) {
5078                 d->data_device_manager =
5079                         wl_registry_bind(registry, id,
5080                                          &wl_data_device_manager_interface, 1);
5081         } else if (strcmp(interface, "text_cursor_position") == 0) {
5082                 d->text_cursor_position =
5083                         wl_registry_bind(registry, id,
5084                                          &text_cursor_position_interface, 1);
5085         } else if (strcmp(interface, "workspace_manager") == 0) {
5086                 init_workspace_manager(d, id);
5087         } else if (strcmp(interface, "wl_subcompositor") == 0) {
5088                 d->subcompositor =
5089                         wl_registry_bind(registry, id,
5090                                          &wl_subcompositor_interface, 1);
5091         }
5092
5093         if (d->global_handler)
5094                 d->global_handler(d, id, interface, version, d->user_data);
5095 }
5096
5097 static void
5098 registry_handle_global_remove(void *data, struct wl_registry *registry,
5099                               uint32_t name)
5100 {
5101         struct display *d = data;
5102         struct global *global;
5103         struct global *tmp;
5104
5105         wl_list_for_each_safe(global, tmp, &d->global_list, link) {
5106                 if (global->name != name)
5107                         continue;
5108
5109                 /* XXX: Should destroy bound globals, and call
5110                  * the counterpart of display::global_handler
5111                  */
5112                 wl_list_remove(&global->link);
5113                 free(global->interface);
5114                 free(global);
5115         }
5116 }
5117
5118 void *
5119 display_bind(struct display *display, uint32_t name,
5120              const struct wl_interface *interface, uint32_t version)
5121 {
5122         return wl_registry_bind(display->registry, name, interface, version);
5123 }
5124
5125 static const struct wl_registry_listener registry_listener = {
5126         registry_handle_global,
5127         registry_handle_global_remove
5128 };
5129
5130 #ifdef HAVE_CAIRO_EGL
5131 static int
5132 init_egl(struct display *d)
5133 {
5134         EGLint major, minor;
5135         EGLint n;
5136
5137 #ifdef USE_CAIRO_GLESV2
5138 #  define GL_BIT EGL_OPENGL_ES2_BIT
5139 #else
5140 #  define GL_BIT EGL_OPENGL_BIT
5141 #endif
5142
5143         static const EGLint argb_cfg_attribs[] = {
5144                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
5145                 EGL_RED_SIZE, 1,
5146                 EGL_GREEN_SIZE, 1,
5147                 EGL_BLUE_SIZE, 1,
5148                 EGL_ALPHA_SIZE, 1,
5149                 EGL_DEPTH_SIZE, 1,
5150                 EGL_RENDERABLE_TYPE, GL_BIT,
5151                 EGL_NONE
5152         };
5153
5154 #ifdef USE_CAIRO_GLESV2
5155         static const EGLint context_attribs[] = {
5156                 EGL_CONTEXT_CLIENT_VERSION, 2,
5157                 EGL_NONE
5158         };
5159         EGLint api = EGL_OPENGL_ES_API;
5160 #else
5161         EGLint *context_attribs = NULL;
5162         EGLint api = EGL_OPENGL_API;
5163 #endif
5164
5165         d->dpy = eglGetDisplay(d->display);
5166         if (!eglInitialize(d->dpy, &major, &minor)) {
5167                 fprintf(stderr, "failed to initialize EGL\n");
5168                 return -1;
5169         }
5170
5171         if (!eglBindAPI(api)) {
5172                 fprintf(stderr, "failed to bind EGL client API\n");
5173                 return -1;
5174         }
5175
5176         if (!eglChooseConfig(d->dpy, argb_cfg_attribs,
5177                              &d->argb_config, 1, &n) || n != 1) {
5178                 fprintf(stderr, "failed to choose argb EGL config\n");
5179                 return -1;
5180         }
5181
5182         d->argb_ctx = eglCreateContext(d->dpy, d->argb_config,
5183                                        EGL_NO_CONTEXT, context_attribs);
5184         if (d->argb_ctx == NULL) {
5185                 fprintf(stderr, "failed to create EGL context\n");
5186                 return -1;
5187         }
5188
5189         d->argb_device = cairo_egl_device_create(d->dpy, d->argb_ctx);
5190         if (cairo_device_status(d->argb_device) != CAIRO_STATUS_SUCCESS) {
5191                 fprintf(stderr, "failed to get cairo EGL argb device\n");
5192                 return -1;
5193         }
5194
5195         return 0;
5196 }
5197
5198 static void
5199 fini_egl(struct display *display)
5200 {
5201         cairo_device_destroy(display->argb_device);
5202
5203         eglMakeCurrent(display->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE,
5204                        EGL_NO_CONTEXT);
5205
5206         eglTerminate(display->dpy);
5207         eglReleaseThread();
5208 }
5209 #endif
5210
5211 static void
5212 init_dummy_surface(struct display *display)
5213 {
5214         int len;
5215         void *data;
5216
5217         len = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, 1);
5218         data = malloc(len);
5219         display->dummy_surface =
5220                 cairo_image_surface_create_for_data(data, CAIRO_FORMAT_ARGB32,
5221                                                     1, 1, len);
5222         display->dummy_surface_data = data;
5223 }
5224
5225 static void
5226 handle_display_data(struct task *task, uint32_t events)
5227 {
5228         struct display *display =
5229                 container_of(task, struct display, display_task);
5230         struct epoll_event ep;
5231         int ret;
5232
5233         display->display_fd_events = events;
5234
5235         if (events & EPOLLERR || events & EPOLLHUP) {
5236                 display_exit(display);
5237                 return;
5238         }
5239
5240         if (events & EPOLLIN) {
5241                 ret = wl_display_dispatch(display->display);
5242                 if (ret == -1) {
5243                         display_exit(display);
5244                         return;
5245                 }
5246         }
5247
5248         if (events & EPOLLOUT) {
5249                 ret = wl_display_flush(display->display);
5250                 if (ret == 0) {
5251                         ep.events = EPOLLIN | EPOLLERR | EPOLLHUP;
5252                         ep.data.ptr = &display->display_task;
5253                         epoll_ctl(display->epoll_fd, EPOLL_CTL_MOD,
5254                                   display->display_fd, &ep);
5255                 } else if (ret == -1 && errno != EAGAIN) {
5256                         display_exit(display);
5257                         return;
5258                 }
5259         }
5260 }
5261
5262 static void
5263 log_handler(const char *format, va_list args)
5264 {
5265         vfprintf(stderr, format, args);
5266 }
5267
5268 struct display *
5269 display_create(int *argc, char *argv[])
5270 {
5271         struct display *d;
5272
5273         wl_log_set_handler_client(log_handler);
5274
5275         d = zalloc(sizeof *d);
5276         if (d == NULL)
5277                 return NULL;
5278
5279         d->display = wl_display_connect(NULL);
5280         if (d->display == NULL) {
5281                 fprintf(stderr, "failed to connect to Wayland display: %m\n");
5282                 free(d);
5283                 return NULL;
5284         }
5285
5286         d->xkb_context = xkb_context_new(0);
5287         if (d->xkb_context == NULL) {
5288                 fprintf(stderr, "Failed to create XKB context\n");
5289                 free(d);
5290                 return NULL;
5291         }
5292
5293         d->epoll_fd = os_epoll_create_cloexec();
5294         d->display_fd = wl_display_get_fd(d->display);
5295         d->display_task.run = handle_display_data;
5296         display_watch_fd(d, d->display_fd, EPOLLIN | EPOLLERR | EPOLLHUP,
5297                          &d->display_task);
5298
5299         wl_list_init(&d->deferred_list);
5300         wl_list_init(&d->input_list);
5301         wl_list_init(&d->output_list);
5302         wl_list_init(&d->global_list);
5303
5304         d->workspace = 0;
5305         d->workspace_count = 1;
5306
5307         d->registry = wl_display_get_registry(d->display);
5308         wl_registry_add_listener(d->registry, &registry_listener, d);
5309
5310         if (wl_display_dispatch(d->display) < 0) {
5311                 fprintf(stderr, "Failed to process Wayland connection: %m\n");
5312                 return NULL;
5313         }
5314
5315 #ifdef HAVE_CAIRO_EGL
5316         if (init_egl(d) < 0)
5317                 fprintf(stderr, "EGL does not seem to work, "
5318                         "falling back to software rendering and wl_shm.\n");
5319 #endif
5320
5321         create_cursors(d);
5322
5323         d->theme = theme_create();
5324
5325         wl_list_init(&d->window_list);
5326
5327         init_dummy_surface(d);
5328
5329         return d;
5330 }
5331
5332 static void
5333 display_destroy_outputs(struct display *display)
5334 {
5335         struct output *tmp;
5336         struct output *output;
5337
5338         wl_list_for_each_safe(output, tmp, &display->output_list, link)
5339                 output_destroy(output);
5340 }
5341
5342 static void
5343 display_destroy_inputs(struct display *display)
5344 {
5345         struct input *tmp;
5346         struct input *input;
5347
5348         wl_list_for_each_safe(input, tmp, &display->input_list, link)
5349                 input_destroy(input);
5350 }
5351
5352 void
5353 display_destroy(struct display *display)
5354 {
5355         if (!wl_list_empty(&display->window_list))
5356                 fprintf(stderr, "toytoolkit warning: %d windows exist.\n",
5357                         wl_list_length(&display->window_list));
5358
5359         if (!wl_list_empty(&display->deferred_list))
5360                 fprintf(stderr, "toytoolkit warning: deferred tasks exist.\n");
5361
5362         cairo_surface_destroy(display->dummy_surface);
5363         free(display->dummy_surface_data);
5364
5365         display_destroy_outputs(display);
5366         display_destroy_inputs(display);
5367
5368         xkb_context_unref(display->xkb_context);
5369
5370         theme_destroy(display->theme);
5371         destroy_cursors(display);
5372
5373 #ifdef HAVE_CAIRO_EGL
5374         if (display->argb_device)
5375                 fini_egl(display);
5376 #endif
5377
5378         if (display->subcompositor)
5379                 wl_subcompositor_destroy(display->subcompositor);
5380
5381         if (display->shell)
5382                 wl_shell_destroy(display->shell);
5383
5384         if (display->shm)
5385                 wl_shm_destroy(display->shm);
5386
5387         if (display->data_device_manager)
5388                 wl_data_device_manager_destroy(display->data_device_manager);
5389
5390         wl_compositor_destroy(display->compositor);
5391         wl_registry_destroy(display->registry);
5392
5393         close(display->epoll_fd);
5394
5395         if (!(display->display_fd_events & EPOLLERR) &&
5396             !(display->display_fd_events & EPOLLHUP))
5397                 wl_display_flush(display->display);
5398
5399         wl_display_disconnect(display->display);
5400         free(display);
5401 }
5402
5403 void
5404 display_set_user_data(struct display *display, void *data)
5405 {
5406         display->user_data = data;
5407 }
5408
5409 void *
5410 display_get_user_data(struct display *display)
5411 {
5412         return display->user_data;
5413 }
5414
5415 struct wl_display *
5416 display_get_display(struct display *display)
5417 {
5418         return display->display;
5419 }
5420
5421 int
5422 display_has_subcompositor(struct display *display)
5423 {
5424         if (display->subcompositor)
5425                 return 1;
5426
5427         wl_display_roundtrip(display->display);
5428
5429         return display->subcompositor != NULL;
5430 }
5431
5432 cairo_device_t *
5433 display_get_cairo_device(struct display *display)
5434 {
5435         return display->argb_device;
5436 }
5437
5438 struct output *
5439 display_get_output(struct display *display)
5440 {
5441         return container_of(display->output_list.next, struct output, link);
5442 }
5443
5444 struct wl_compositor *
5445 display_get_compositor(struct display *display)
5446 {
5447         return display->compositor;
5448 }
5449
5450 uint32_t
5451 display_get_serial(struct display *display)
5452 {
5453         return display->serial;
5454 }
5455
5456 EGLDisplay
5457 display_get_egl_display(struct display *d)
5458 {
5459         return d->dpy;
5460 }
5461
5462 struct wl_data_source *
5463 display_create_data_source(struct display *display)
5464 {
5465         return wl_data_device_manager_create_data_source(display->data_device_manager);
5466 }
5467
5468 EGLConfig
5469 display_get_argb_egl_config(struct display *d)
5470 {
5471         return d->argb_config;
5472 }
5473
5474 struct wl_shell *
5475 display_get_shell(struct display *display)
5476 {
5477         return display->shell;
5478 }
5479
5480 int
5481 display_acquire_window_surface(struct display *display,
5482                                struct window *window,
5483                                EGLContext ctx)
5484 {
5485         struct surface *surface = window->main_surface;
5486
5487         if (surface->buffer_type != WINDOW_BUFFER_TYPE_EGL_WINDOW)
5488                 return -1;
5489
5490         widget_get_cairo_surface(window->main_surface->widget);
5491         return surface->toysurface->acquire(surface->toysurface, ctx);
5492 }
5493
5494 void
5495 display_release_window_surface(struct display *display,
5496                                struct window *window)
5497 {
5498         struct surface *surface = window->main_surface;
5499
5500         if (surface->buffer_type != WINDOW_BUFFER_TYPE_EGL_WINDOW)
5501                 return;
5502
5503         surface->toysurface->release(surface->toysurface);
5504 }
5505
5506 void
5507 display_defer(struct display *display, struct task *task)
5508 {
5509         wl_list_insert(&display->deferred_list, &task->link);
5510 }
5511
5512 void
5513 display_watch_fd(struct display *display,
5514                  int fd, uint32_t events, struct task *task)
5515 {
5516         struct epoll_event ep;
5517
5518         ep.events = events;
5519         ep.data.ptr = task;
5520         epoll_ctl(display->epoll_fd, EPOLL_CTL_ADD, fd, &ep);
5521 }
5522
5523 void
5524 display_unwatch_fd(struct display *display, int fd)
5525 {
5526         epoll_ctl(display->epoll_fd, EPOLL_CTL_DEL, fd, NULL);
5527 }
5528
5529 void
5530 display_run(struct display *display)
5531 {
5532         struct task *task;
5533         struct epoll_event ep[16];
5534         int i, count, ret;
5535
5536         display->running = 1;
5537         while (1) {
5538                 while (!wl_list_empty(&display->deferred_list)) {
5539                         task = container_of(display->deferred_list.prev,
5540                                             struct task, link);
5541                         wl_list_remove(&task->link);
5542                         task->run(task, 0);
5543                 }
5544
5545                 wl_display_dispatch_pending(display->display);
5546
5547                 if (!display->running)
5548                         break;
5549
5550                 ret = wl_display_flush(display->display);
5551                 if (ret < 0 && errno == EAGAIN) {
5552                         ep[0].events =
5553                                 EPOLLIN | EPOLLOUT | EPOLLERR | EPOLLHUP;
5554                         ep[0].data.ptr = &display->display_task;
5555
5556                         epoll_ctl(display->epoll_fd, EPOLL_CTL_MOD,
5557                                   display->display_fd, &ep[0]);
5558                 } else if (ret < 0) {
5559                         break;
5560                 }
5561
5562                 count = epoll_wait(display->epoll_fd,
5563                                    ep, ARRAY_LENGTH(ep), -1);
5564                 for (i = 0; i < count; i++) {
5565                         task = ep[i].data.ptr;
5566                         task->run(task, ep[i].events);
5567                 }
5568         }
5569 }
5570
5571 void
5572 display_exit(struct display *display)
5573 {
5574         display->running = 0;
5575 }
5576
5577 void
5578 keysym_modifiers_add(struct wl_array *modifiers_map,
5579                      const char *name)
5580 {
5581         size_t len = strlen(name) + 1;
5582         char *p;
5583
5584         p = wl_array_add(modifiers_map, len);
5585
5586         if (p == NULL)
5587                 return;
5588
5589         strncpy(p, name, len);
5590 }
5591
5592 static xkb_mod_index_t
5593 keysym_modifiers_get_index(struct wl_array *modifiers_map,
5594                            const char *name)
5595 {
5596         xkb_mod_index_t index = 0;
5597         char *p = modifiers_map->data;
5598
5599         while ((const char *)p < (const char *)(modifiers_map->data + modifiers_map->size)) {
5600                 if (strcmp(p, name) == 0)
5601                         return index;
5602
5603                 index++;
5604                 p += strlen(p) + 1;
5605         }
5606
5607         return XKB_MOD_INVALID;
5608 }
5609
5610 xkb_mod_mask_t
5611 keysym_modifiers_get_mask(struct wl_array *modifiers_map,
5612                           const char *name)
5613 {
5614         xkb_mod_index_t index = keysym_modifiers_get_index(modifiers_map, name);
5615
5616         if (index == XKB_MOD_INVALID)
5617                 return XKB_MOD_INVALID;
5618
5619         return 1 << index;
5620 }
5621
5622 void *
5623 fail_on_null(void *p)
5624 {
5625         if (p == NULL) {
5626                 fprintf(stderr, "%s: out of memory\n", program_invocation_short_name);
5627                 exit(EXIT_FAILURE);
5628         }
5629
5630         return p;
5631 }
5632
5633 void *
5634 xmalloc(size_t s)
5635 {
5636         return fail_on_null(malloc(s));
5637 }
5638
5639 void *
5640 xzalloc(size_t s)
5641 {
5642         return fail_on_null(zalloc(s));
5643 }
5644
5645 char *
5646 xstrdup(const char *s)
5647 {
5648         return fail_on_null(strdup(s));
5649 }