clients/window.c

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