clients/window.c

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