clients/window.c

   1 /*
   2  * Copyright © 2008 Kristian Høgsberg
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and its
   5  * documentation for any purpose is hereby granted without fee, provided that
   6  * the above copyright notice appear in all copies and that both that copyright
   7  * notice and this permission notice appear in supporting documentation, and
   8  * that the name of the copyright holders not be used in advertising or
   9  * publicity pertaining to distribution of the software without specific,
  10  * written prior permission.  The copyright holders make no representations
  11  * about the suitability of this software for any purpose.  It is provided "as
  12  * is" without express or implied warranty.
  13  *
  14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  16  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  20  * OF THIS SOFTWARE.
  21  */
  22
  23 #define _GNU_SOURCE
  24
  25 #include "../config.h"
  26
  27 #include <stdint.h>
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include <fcntl.h>
  32 #include <unistd.h>
  33 #include <math.h>
  34 #include <assert.h>
  35 #include <time.h>
  36 #include <cairo.h>
  37 #include <sys/mman.h>
  38 #include <sys/epoll.h>
  39 #include <sys/timerfd.h>
  40
  41 #include <pixman.h>
  42
  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 #ifdef HAVE_CAIRO_EGL
  55 #include <cairo-gl.h>
  56 #endif
  57
  58 #include <xkbcommon/xkbcommon.h>
  59 #include <wayland-cursor.h>
  60
  61 #include <linux/input.h>
  62 #include <wayland-client.h>
  63 #include "../shared/cairo-util.h"
  64 #include "text-cursor-position-client-protocol.h"
  65 #include "../shared/os-compatibility.h"
  66
  67 #include "window.h"
  68
  69 struct shm_pool;
  70
  71 struct display {
  72         struct wl_display *display;
  73         struct wl_compositor *compositor;
  74         struct wl_shell *shell;
  75         struct wl_shm *shm;
  76         struct wl_data_device_manager *data_device_manager;
  77         struct text_cursor_position *text_cursor_position;
  78         EGLDisplay dpy;
  79         EGLConfig argb_config;
  80         EGLContext argb_ctx;
  81         cairo_device_t *argb_device;
  82         uint32_t serial;
  83
  84         int display_fd;
  85         uint32_t mask;
  86         struct task display_task;
  87
  88         int epoll_fd;
  89         struct wl_list deferred_list;
  90
  91         int running;
  92
  93         struct wl_list window_list;
  94         struct wl_list input_list;
  95         struct wl_list output_list;
  96
  97         struct theme *theme;
  98
  99         struct wl_cursor_theme *cursor_theme;
 100         struct wl_cursor **cursors;
 101
 102         PFNGLEGLIMAGETARGETTEXTURE2DOESPROC image_target_texture_2d;
 103         PFNEGLCREATEIMAGEKHRPROC create_image;
 104         PFNEGLDESTROYIMAGEKHRPROC destroy_image;
 105
 106         display_output_handler_t output_configure_handler;
 107
 108         void *user_data;
 109
 110         struct xkb_context *xkb_context;
 111 };
 112
 113 enum {
 114         TYPE_NONE,
 115         TYPE_TOPLEVEL,
 116         TYPE_FULLSCREEN,
 117         TYPE_MAXIMIZED,
 118         TYPE_TRANSIENT,
 119         TYPE_MENU,
 120         TYPE_CUSTOM
 121 };
 122
 123 struct window_output {
 124         struct output *output;
 125         struct wl_list link;
 126 };
 127
 128 struct window {
 129         struct display *display;
 130         struct window *parent;
 131         struct wl_list window_output_list;
 132         struct wl_surface *surface;
 133         struct wl_shell_surface *shell_surface;
 134         struct wl_region *input_region;
 135         struct wl_region *opaque_region;
 136         char *title;
 137         struct rectangle allocation, saved_allocation, server_allocation;
 138         struct rectangle pending_allocation;
 139         int x, y;
 140         int resize_edges;
 141         int redraw_scheduled;
 142         int redraw_needed;
 143         struct task redraw_task;
 144         int resize_needed;
 145         int type;
 146         int transparent;
 147         struct input *keyboard_device;
 148         enum window_buffer_type buffer_type;
 149
 150         cairo_surface_t *cairo_surface;
 151
 152         struct shm_pool *pool;
 153
 154         window_key_handler_t key_handler;
 155         window_keyboard_focus_handler_t keyboard_focus_handler;
 156         window_data_handler_t data_handler;
 157         window_drop_handler_t drop_handler;
 158         window_close_handler_t close_handler;
 159
 160         struct frame *frame;
 161         struct widget *widget;
 162
 163         void *user_data;
 164         struct wl_list link;
 165 };
 166
 167 struct widget {
 168         struct window *window;
 169         struct tooltip *tooltip;
 170         struct wl_list child_list;
 171         struct wl_list link;
 172         struct rectangle allocation;
 173         widget_resize_handler_t resize_handler;
 174         widget_redraw_handler_t redraw_handler;
 175         widget_enter_handler_t enter_handler;
 176         widget_leave_handler_t leave_handler;
 177         widget_motion_handler_t motion_handler;
 178         widget_button_handler_t button_handler;
 179         void *user_data;
 180         int opaque;
 181         int tooltip_count;
 182 };
 183
 184 struct input {
 185         struct display *display;
 186         struct wl_seat *seat;
 187         struct wl_pointer *pointer;
 188         struct wl_keyboard *keyboard;
 189         struct window *pointer_focus;
 190         struct window *keyboard_focus;
 191         int current_cursor;
 192         uint32_t cursor_anim_start;
 193         struct wl_callback *cursor_frame_cb;
 194         struct wl_surface *pointer_surface;
 195         uint32_t modifiers;
 196         uint32_t pointer_enter_serial;
 197         float sx, sy;
 198         struct wl_list link;
 199
 200         struct widget *focus_widget;
 201         struct widget *grab;
 202         uint32_t grab_button;
 203
 204         struct wl_data_device *data_device;
 205         struct data_offer *drag_offer;
 206         struct data_offer *selection_offer;
 207
 208         struct {
 209                 struct xkb_keymap *keymap;
 210                 struct xkb_state *state;
 211                 xkb_mod_mask_t control_mask;
 212                 xkb_mod_mask_t alt_mask;
 213                 xkb_mod_mask_t shift_mask;
 214         } xkb;
 215
 216         struct task repeat_task;
 217         int repeat_timer_fd;
 218         uint32_t repeat_sym;
 219         uint32_t repeat_key;
 220         uint32_t repeat_time;
 221 };
 222
 223 struct output {
 224         struct display *display;
 225         struct wl_output *output;
 226         struct rectangle allocation;
 227         struct wl_list link;
 228
 229         display_output_handler_t destroy_handler;
 230         void *user_data;
 231 };
 232
 233 enum frame_button_action {
 234         FRAME_BUTTON_NULL = 0,
 235         FRAME_BUTTON_ICON = 1,
 236         FRAME_BUTTON_CLOSE = 2,
 237         FRAME_BUTTON_MINIMIZE = 3,
 238         FRAME_BUTTON_MAXIMIZE = 4,
 239 };
 240
 241 enum frame_button_pointer {
 242         FRAME_BUTTON_DEFAULT = 0,
 243         FRAME_BUTTON_OVER = 1,
 244         FRAME_BUTTON_ACTIVE = 2,
 245 };
 246
 247 enum frame_button_align {
 248         FRAME_BUTTON_RIGHT = 0,
 249         FRAME_BUTTON_LEFT = 1,
 250 };
 251
 252 enum frame_button_decoration {
 253         FRAME_BUTTON_NONE = 0,
 254         FRAME_BUTTON_FANCY = 1,
 255 };
 256
 257 struct frame_button {
 258         struct widget *widget;
 259         struct frame *frame;
 260         cairo_surface_t *icon;
 261         enum frame_button_action type;
 262         enum frame_button_pointer state;
 263         struct wl_list link;    /* buttons_list */
 264         enum frame_button_align align;
 265         enum frame_button_decoration decoration;
 266 };
 267
 268 struct frame {
 269         struct widget *widget;
 270         struct widget *child;
 271         struct wl_list buttons_list;
 272 };
 273
 274 struct menu {
 275         struct window *window;
 276         struct widget *widget;
 277         struct input *input;
 278         const char **entries;
 279         uint32_t time;
 280         int current;
 281         int count;
 282         menu_func_t func;
 283 };
 284
 285 struct tooltip {
 286         struct widget *parent;
 287         struct window *window;
 288         struct widget *widget;
 289         char *entry;
 290         struct task tooltip_task;
 291         int tooltip_fd;
 292         float x, y;
 293 };
 294
 295 struct shm_pool {
 296         struct wl_shm_pool *pool;
 297         size_t size;
 298         size_t used;
 299         void *data;
 300 };
 301
 302 enum {
 303         CURSOR_DEFAULT = 100,
 304         CURSOR_UNSET
 305 };
 306
 307 enum window_location {
 308         WINDOW_INTERIOR = 0,
 309         WINDOW_RESIZING_TOP = 1,
 310         WINDOW_RESIZING_BOTTOM = 2,
 311         WINDOW_RESIZING_LEFT = 4,
 312         WINDOW_RESIZING_TOP_LEFT = 5,
 313         WINDOW_RESIZING_BOTTOM_LEFT = 6,
 314         WINDOW_RESIZING_RIGHT = 8,
 315         WINDOW_RESIZING_TOP_RIGHT = 9,
 316         WINDOW_RESIZING_BOTTOM_RIGHT = 10,
 317         WINDOW_RESIZING_MASK = 15,
 318         WINDOW_EXTERIOR = 16,
 319         WINDOW_TITLEBAR = 17,
 320         WINDOW_CLIENT_AREA = 18,
 321 };
 322
 323 const char *option_xkb_layout = "us";
 324 const char *option_xkb_variant = "";
 325 const char *option_xkb_options = "";
 326
 327 static const struct weston_option xkb_options[] = {
 328         { WESTON_OPTION_STRING, "xkb-layout", 0, &option_xkb_layout },
 329         { WESTON_OPTION_STRING, "xkb-variant", 0, &option_xkb_variant },
 330         { WESTON_OPTION_STRING, "xkb-options", 0, &option_xkb_options },
 331 };
 332
 333 static const cairo_user_data_key_t surface_data_key;
 334 struct surface_data {
 335         struct wl_buffer *buffer;
 336 };
 337
 338 #define MULT(_d,c,a,t) \
 339         do { t = c * a + 0x7f; _d = ((t >> 8) + t) >> 8; } while (0)
 340
 341 #ifdef HAVE_CAIRO_EGL
 342
 343 struct egl_window_surface_data {
 344         struct display *display;
 345         struct wl_surface *surface;
 346         struct wl_egl_window *window;
 347         EGLSurface surf;
 348 };
 349
 350 static void
 351 egl_window_surface_data_destroy(void *p)
 352 {
 353         struct egl_window_surface_data *data = p;
 354         struct display *d = data->display;
 355
 356         eglDestroySurface(d->dpy, data->surf);
 357         wl_egl_window_destroy(data->window);
 358         data->surface = NULL;
 359
 360         free(p);
 361 }
 362
 363 static cairo_surface_t *
 364 display_create_egl_window_surface(struct display *display,
 365                                   struct wl_surface *surface,
 366                                   uint32_t flags,
 367                                   struct rectangle *rectangle)
 368 {
 369         cairo_surface_t *cairo_surface;
 370         struct egl_window_surface_data *data;
 371         EGLConfig config;
 372         cairo_device_t *device;
 373
 374         data = malloc(sizeof *data);
 375         if (data == NULL)
 376                 return NULL;
 377
 378         data->display = display;
 379         data->surface = surface;
 380
 381         config = display->argb_config;
 382         device = display->argb_device;
 383
 384         data->window = wl_egl_window_create(surface,
 385                                             rectangle->width,
 386                                             rectangle->height);
 387
 388         data->surf = eglCreateWindowSurface(display->dpy, config,
 389                                             data->window, NULL);
 390
 391         cairo_surface = cairo_gl_surface_create_for_egl(device,
 392                                                         data->surf,
 393                                                         rectangle->width,
 394                                                         rectangle->height);
 395
 396         cairo_surface_set_user_data(cairo_surface, &surface_data_key,
 397                                     data, egl_window_surface_data_destroy);
 398
 399         return cairo_surface;
 400 }
 401
 402 #endif
 403
 404 struct wl_buffer *
 405 display_get_buffer_for_surface(struct display *display,
 406                                cairo_surface_t *surface)
 407 {
 408         struct surface_data *data;
 409
 410         data = cairo_surface_get_user_data (surface, &surface_data_key);
 411
 412         return data->buffer;
 413 }
 414
 415 struct shm_surface_data {
 416         struct surface_data data;
 417         struct shm_pool *pool;
 418 };
 419
 420 static void
 421 shm_pool_destroy(struct shm_pool *pool);
 422
 423 static void
 424 shm_surface_data_destroy(void *p)
 425 {
 426         struct shm_surface_data *data = p;
 427
 428         wl_buffer_destroy(data->data.buffer);
 429         if (data->pool)
 430                 shm_pool_destroy(data->pool);
 431
 432         free(data);
 433 }
 434
 435 static struct wl_shm_pool *
 436 make_shm_pool(struct display *display, int size, void **data)
 437 {
 438         struct wl_shm_pool *pool;
 439         int fd;
 440
 441         fd = os_create_anonymous_file(size);
 442         if (fd < 0) {
 443                 fprintf(stderr, "creating a buffer file for %d B failed: %m\n",
 444                         size);
 445                 return NULL;
 446         }
 447
 448         *data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 449         if (*data == MAP_FAILED) {
 450                 fprintf(stderr, "mmap failed: %m\n");
 451                 close(fd);
 452                 return NULL;
 453         }
 454
 455         pool = wl_shm_create_pool(display->shm, fd, size);
 456
 457         close(fd);
 458
 459         return pool;
 460 }
 461
 462 static struct shm_pool *
 463 shm_pool_create(struct display *display, size_t size)
 464 {
 465         struct shm_pool *pool = malloc(sizeof *pool);
 466
 467         if (!pool)
 468                 return NULL;
 469
 470         pool->pool = make_shm_pool(display, size, &pool->data);
 471         if (!pool->pool) {
 472                 free(pool);
 473                 return NULL;
 474         }
 475
 476         pool->size = size;
 477         pool->used = 0;
 478
 479         return pool;
 480 }
 481
 482 static void *
 483 shm_pool_allocate(struct shm_pool *pool, size_t size, int *offset)
 484 {
 485         if (pool->used + size > pool->size)
 486                 return NULL;
 487
 488         *offset = pool->used;
 489         pool->used += size;
 490
 491         return (char *) pool->data + *offset;
 492 }
 493
 494 /* destroy the pool. this does not unmap the memory though */
 495 static void
 496 shm_pool_destroy(struct shm_pool *pool)
 497 {
 498         munmap(pool->data, pool->size);
 499         wl_shm_pool_destroy(pool->pool);
 500         free(pool);
 501 }
 502
 503 /* Start allocating from the beginning of the pool again */
 504 static void
 505 shm_pool_reset(struct shm_pool *pool)
 506 {
 507         pool->used = 0;
 508 }
 509
 510 static int
 511 data_length_for_shm_surface(struct rectangle *rect)
 512 {
 513         int stride;
 514
 515         stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32,
 516                                                 rect->width);
 517         return stride * rect->height;
 518 }
 519
 520 static cairo_surface_t *
 521 display_create_shm_surface_from_pool(struct display *display,
 522                                      struct rectangle *rectangle,
 523                                      uint32_t flags, struct shm_pool *pool)
 524 {
 525         struct shm_surface_data *data;
 526         uint32_t format;
 527         cairo_surface_t *surface;
 528         int stride, length, offset;
 529         void *map;
 530
 531         data = malloc(sizeof *data);
 532         if (data == NULL)
 533                 return NULL;
 534
 535         stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32,
 536                                                 rectangle->width);
 537         length = stride * rectangle->height;
 538         data->pool = NULL;
 539         map = shm_pool_allocate(pool, length, &offset);
 540
 541         if (!map) {
 542                 free(data);
 543                 return NULL;
 544         }
 545
 546         surface = cairo_image_surface_create_for_data (map,
 547                                                        CAIRO_FORMAT_ARGB32,
 548                                                        rectangle->width,
 549                                                        rectangle->height,
 550                                                        stride);
 551
 552         cairo_surface_set_user_data (surface, &surface_data_key,
 553                                      data, shm_surface_data_destroy);
 554
 555         if (flags & SURFACE_OPAQUE)
 556                 format = WL_SHM_FORMAT_XRGB8888;
 557         else
 558                 format = WL_SHM_FORMAT_ARGB8888;
 559
 560         data->data.buffer = wl_shm_pool_create_buffer(pool->pool, offset,
 561                                                       rectangle->width,
 562                                                       rectangle->height,
 563                                                       stride, format);
 564
 565         return surface;
 566 }
 567
 568 static cairo_surface_t *
 569 display_create_shm_surface(struct display *display,
 570                            struct rectangle *rectangle, uint32_t flags,
 571                            struct window *window)
 572 {
 573         struct shm_surface_data *data;
 574         struct shm_pool *pool;
 575         cairo_surface_t *surface;
 576
 577         if (window && window->pool) {
 578                 shm_pool_reset(window->pool);
 579                 surface = display_create_shm_surface_from_pool(display,
 580                                                                rectangle,
 581                                                                flags,
 582                                                                window->pool);
 583                 if (surface)
 584                         return surface;
 585         }
 586
 587         pool = shm_pool_create(display,
 588                                data_length_for_shm_surface(rectangle));
 589         if (!pool)
 590                 return NULL;
 591
 592         surface =
 593                 display_create_shm_surface_from_pool(display, rectangle,
 594                                                      flags, pool);
 595
 596         if (!surface) {
 597                 shm_pool_destroy(pool);
 598                 return NULL;
 599         }
 600
 601         /* make sure we destroy the pool when the surface is destroyed */
 602         data = cairo_surface_get_user_data(surface, &surface_data_key);
 603         data->pool = pool;
 604
 605         return surface;
 606 }
 607
 608 static int
 609 check_size(struct rectangle *rect)
 610 {
 611         if (rect->width && rect->height)
 612                 return 0;
 613
 614         fprintf(stderr, "tried to create surface of "
 615                 "width: %d, height: %d\n", rect->width, rect->height);
 616         return -1;
 617 }
 618
 619 cairo_surface_t *
 620 display_create_surface(struct display *display,
 621                        struct wl_surface *surface,
 622                        struct rectangle *rectangle,
 623                        uint32_t flags)
 624 {
 625         if (check_size(rectangle) < 0)
 626                 return NULL;
 627 #ifdef HAVE_CAIRO_EGL
 628         if (display->dpy && !(flags & SURFACE_SHM))
 629                 return display_create_egl_window_surface(display,
 630                                                          surface,
 631                                                          flags,
 632                                                          rectangle);
 633 #endif
 634         return display_create_shm_surface(display, rectangle, flags, NULL);
 635 }
 636
 637 static const char *cursors[] = {
 638         "bottom_left_corner",
 639         "bottom_right_corner",
 640         "bottom_side",
 641         "grabbing",
 642         "left_ptr",
 643         "left_side",
 644         "right_side",
 645         "top_left_corner",
 646         "top_right_corner",
 647         "top_side",
 648         "xterm",
 649         "hand1",
 650         "watch",
 651 };
 652
 653 static void
 654 create_cursors(struct display *display)
 655 {
 656         unsigned int i;
 657
 658         display->cursor_theme = wl_cursor_theme_load(NULL, 32, display->shm);
 659         display->cursors =
 660                 malloc(ARRAY_LENGTH(cursors) * sizeof display->cursors[0]);
 661
 662         for (i = 0; i < ARRAY_LENGTH(cursors); i++)
 663                 display->cursors[i] =
 664                         wl_cursor_theme_get_cursor(display->cursor_theme,
 665                                                    cursors[i]);
 666 }
 667
 668 static void
 669 destroy_cursors(struct display *display)
 670 {
 671         wl_cursor_theme_destroy(display->cursor_theme);
 672         free(display->cursors);
 673 }
 674
 675 struct wl_cursor_image *
 676 display_get_pointer_image(struct display *display, int pointer)
 677 {
 678         struct wl_cursor *cursor =
 679                 wl_cursor_theme_get_cursor(display->cursor_theme,
 680                                            cursors[pointer]);
 681
 682         return cursor ? cursor->images[0] : NULL;
 683 }
 684
 685 static void
 686 window_get_resize_dx_dy(struct window *window, int *x, int *y)
 687 {
 688         if (window->resize_edges & WINDOW_RESIZING_LEFT)
 689                 *x = window->server_allocation.width - window->allocation.width;
 690         else
 691                 *x = 0;
 692
 693         if (window->resize_edges & WINDOW_RESIZING_TOP)
 694                 *y = window->server_allocation.height -
 695                         window->allocation.height;
 696         else
 697                 *y = 0;
 698
 699         window->resize_edges = 0;
 700 }
 701
 702 static void
 703 window_attach_surface(struct window *window)
 704 {
 705         struct display *display = window->display;
 706         struct wl_buffer *buffer;
 707 #ifdef HAVE_CAIRO_EGL
 708         struct egl_window_surface_data *data;
 709 #endif
 710         int32_t x, y;
 711
 712         if (window->type == TYPE_NONE) {
 713                 window->type = TYPE_TOPLEVEL;
 714                 if (display->shell)
 715                         wl_shell_surface_set_toplevel(window->shell_surface);
 716         }
 717
 718         switch (window->buffer_type) {
 719 #ifdef HAVE_CAIRO_EGL
 720         case WINDOW_BUFFER_TYPE_EGL_WINDOW:
 721                 data = cairo_surface_get_user_data(window->cairo_surface,
 722                                                    &surface_data_key);
 723
 724                 cairo_gl_surface_swapbuffers(window->cairo_surface);
 725                 wl_egl_window_get_attached_size(data->window,
 726                                 &window->server_allocation.width,
 727                                 &window->server_allocation.height);
 728                 break;
 729 #endif
 730         case WINDOW_BUFFER_TYPE_SHM:
 731                 buffer =
 732                         display_get_buffer_for_surface(display,
 733                                                        window->cairo_surface);
 734
 735                 window_get_resize_dx_dy(window, &x, &y);
 736                 wl_surface_attach(window->surface, buffer, x, y);
 737                 wl_surface_damage(window->surface, 0, 0,
 738                                   window->allocation.width,
 739                                   window->allocation.height);
 740                 window->server_allocation = window->allocation;
 741                 cairo_surface_destroy(window->cairo_surface);
 742                 window->cairo_surface = NULL;
 743                 break;
 744         default:
 745                 return;
 746         }
 747
 748         if (window->input_region) {
 749                 wl_surface_set_input_region(window->surface,
 750                                             window->input_region);
 751                 wl_region_destroy(window->input_region);
 752                 window->input_region = NULL;
 753         }
 754
 755         if (window->opaque_region) {
 756                 wl_surface_set_opaque_region(window->surface,
 757                                              window->opaque_region);
 758                 wl_region_destroy(window->opaque_region);
 759                 window->opaque_region = NULL;
 760         }
 761 }
 762
 763 void
 764 window_flush(struct window *window)
 765 {
 766         if (window->cairo_surface)
 767                 window_attach_surface(window);
 768 }
 769
 770 void
 771 window_set_surface(struct window *window, cairo_surface_t *surface)
 772 {
 773         cairo_surface_reference(surface);
 774
 775         if (window->cairo_surface != NULL)
 776                 cairo_surface_destroy(window->cairo_surface);
 777
 778         window->cairo_surface = surface;
 779 }
 780
 781 #ifdef HAVE_CAIRO_EGL
 782 static void
 783 window_resize_cairo_window_surface(struct window *window)
 784 {
 785         struct egl_window_surface_data *data;
 786         int x, y;
 787
 788         data = cairo_surface_get_user_data(window->cairo_surface,
 789                                            &surface_data_key);
 790
 791         window_get_resize_dx_dy(window, &x, &y),
 792         wl_egl_window_resize(data->window,
 793                              window->allocation.width,
 794                              window->allocation.height,
 795                              x,y);
 796
 797         cairo_gl_surface_set_size(window->cairo_surface,
 798                                   window->allocation.width,
 799                                   window->allocation.height);
 800 }
 801 #endif
 802
 803 struct display *
 804 window_get_display(struct window *window)
 805 {
 806         return window->display;
 807 }
 808
 809 void
 810 window_create_surface(struct window *window)
 811 {
 812         cairo_surface_t *surface;
 813         uint32_t flags = 0;
 814
 815         if (!window->transparent)
 816                 flags = SURFACE_OPAQUE;
 817
 818         switch (window->buffer_type) {
 819 #ifdef HAVE_CAIRO_EGL
 820         case WINDOW_BUFFER_TYPE_EGL_WINDOW:
 821                 if (window->cairo_surface) {
 822                         window_resize_cairo_window_surface(window);
 823                         return;
 824                 }
 825                 surface = display_create_surface(window->display,
 826                                                  window->surface,
 827                                                  &window->allocation, flags);
 828                 break;
 829 #endif
 830         case WINDOW_BUFFER_TYPE_SHM:
 831                 surface = display_create_shm_surface(window->display,
 832                                                      &window->allocation,
 833                                                      flags, window);
 834                 break;
 835         default:
 836                 surface = NULL;
 837                 break;
 838         }
 839
 840         window_set_surface(window, surface);
 841         cairo_surface_destroy(surface);
 842 }
 843
 844 static void frame_destroy(struct frame *frame);
 845
 846 void
 847 window_destroy(struct window *window)
 848 {
 849         struct display *display = window->display;
 850         struct input *input;
 851         struct window_output *window_output;
 852         struct window_output *window_output_tmp;
 853
 854         if (window->redraw_scheduled)
 855                 wl_list_remove(&window->redraw_task.link);
 856
 857         wl_list_for_each(input, &display->input_list, link) {
 858                 if (input->pointer_focus == window)
 859                         input->pointer_focus = NULL;
 860                 if (input->keyboard_focus == window)
 861                         input->keyboard_focus = NULL;
 862                 if (input->focus_widget &&
 863                     input->focus_widget->window == window)
 864                         input->focus_widget = NULL;
 865         }
 866
 867         wl_list_for_each_safe(window_output, window_output_tmp,
 868                               &window->window_output_list, link) {
 869                 free (window_output);
 870         }
 871
 872         if (window->input_region)
 873                 wl_region_destroy(window->input_region);
 874         if (window->opaque_region)
 875                 wl_region_destroy(window->opaque_region);
 876
 877         if (window->frame)
 878                 frame_destroy(window->frame);
 879
 880         if (window->shell_surface)
 881                 wl_shell_surface_destroy(window->shell_surface);
 882         wl_surface_destroy(window->surface);
 883         wl_list_remove(&window->link);
 884
 885         if (window->cairo_surface != NULL)
 886                 cairo_surface_destroy(window->cairo_surface);
 887
 888         free(window->title);
 889         free(window);
 890 }
 891
 892 static struct widget *
 893 widget_find_widget(struct widget *widget, int32_t x, int32_t y)
 894 {
 895         struct widget *child, *target;
 896
 897         wl_list_for_each(child, &widget->child_list, link) {
 898                 target = widget_find_widget(child, x, y);
 899                 if (target)
 900                         return target;
 901         }
 902
 903         if (widget->allocation.x <= x &&
 904             x < widget->allocation.x + widget->allocation.width &&
 905             widget->allocation.y <= y &&
 906             y < widget->allocation.y + widget->allocation.height) {
 907                 return widget;
 908         }
 909
 910         return NULL;
 911 }
 912
 913 static struct widget *
 914 widget_create(struct window *window, void *data)
 915 {
 916         struct widget *widget;
 917
 918         widget = malloc(sizeof *widget);
 919         memset(widget, 0, sizeof *widget);
 920         widget->window = window;
 921         widget->user_data = data;
 922         widget->allocation = window->allocation;
 923         wl_list_init(&widget->child_list);
 924         widget->opaque = 0;
 925         widget->tooltip = NULL;
 926         widget->tooltip_count = 0;
 927
 928         return widget;
 929 }
 930
 931 struct widget *
 932 window_add_widget(struct window *window, void *data)
 933 {
 934         window->widget = widget_create(window, data);
 935         wl_list_init(&window->widget->link);
 936
 937         return window->widget;
 938 }
 939
 940 struct widget *
 941 widget_add_widget(struct widget *parent, void *data)
 942 {
 943         struct widget *widget;
 944
 945         widget = widget_create(parent->window, data);
 946         wl_list_insert(parent->child_list.prev, &widget->link);
 947
 948         return widget;
 949 }
 950
 951 void
 952 widget_destroy(struct widget *widget)
 953 {
 954         struct display *display = widget->window->display;
 955         struct input *input;
 956
 957         if (widget->tooltip) {
 958                 free(widget->tooltip);
 959                 widget->tooltip = NULL;
 960         }
 961
 962         wl_list_for_each(input, &display->input_list, link) {
 963                 if (input->focus_widget == widget)
 964                         input->focus_widget = NULL;
 965         }
 966
 967         wl_list_remove(&widget->link);
 968         free(widget);
 969 }
 970
 971 void
 972 widget_get_allocation(struct widget *widget, struct rectangle *allocation)
 973 {
 974         *allocation = widget->allocation;
 975 }
 976
 977 void
 978 widget_set_size(struct widget *widget, int32_t width, int32_t height)
 979 {
 980         widget->allocation.width = width;
 981         widget->allocation.height = height;
 982 }
 983
 984 void
 985 widget_set_allocation(struct widget *widget,
 986                       int32_t x, int32_t y, int32_t width, int32_t height)
 987 {
 988         widget->allocation.x = x;
 989         widget->allocation.y = y;
 990         widget_set_size(widget, width, height);
 991 }
 992
 993 void
 994 widget_set_transparent(struct widget *widget, int transparent)
 995 {
 996         widget->opaque = !transparent;
 997 }
 998
 999 void *
1000 widget_get_user_data(struct widget *widget)
1001 {
1002         return widget->user_data;
1003 }
1004
1005 void
1006 widget_set_resize_handler(struct widget *widget,
1007                           widget_resize_handler_t handler)
1008 {
1009         widget->resize_handler = handler;
1010 }
1011
1012 void
1013 widget_set_redraw_handler(struct widget *widget,
1014                           widget_redraw_handler_t handler)
1015 {
1016         widget->redraw_handler = handler;
1017 }
1018
1019 void
1020 widget_set_enter_handler(struct widget *widget, widget_enter_handler_t handler)
1021 {
1022         widget->enter_handler = handler;
1023 }
1024
1025 void
1026 widget_set_leave_handler(struct widget *widget, widget_leave_handler_t handler)
1027 {
1028         widget->leave_handler = handler;
1029 }
1030
1031 void
1032 widget_set_motion_handler(struct widget *widget,
1033                           widget_motion_handler_t handler)
1034 {
1035         widget->motion_handler = handler;
1036 }
1037
1038 void
1039 widget_set_button_handler(struct widget *widget,
1040                           widget_button_handler_t handler)
1041 {
1042         widget->button_handler = handler;
1043 }
1044
1045 void
1046 widget_schedule_redraw(struct widget *widget)
1047 {
1048         window_schedule_redraw(widget->window);
1049 }
1050
1051 cairo_surface_t *
1052 window_get_surface(struct window *window)
1053 {
1054         return cairo_surface_reference(window->cairo_surface);
1055 }
1056
1057 struct wl_surface *
1058 window_get_wl_surface(struct window *window)
1059 {
1060         return window->surface;
1061 }
1062
1063 struct wl_shell_surface *
1064 window_get_wl_shell_surface(struct window *window)
1065 {
1066         return window->shell_surface;
1067 }
1068
1069 static void
1070 tooltip_redraw_handler(struct widget *widget, void *data)
1071 {
1072         cairo_t *cr;
1073         const int32_t r = 3;
1074         struct tooltip *tooltip = data;
1075         int32_t width, height;
1076         struct window *window = widget->window;
1077
1078         cr = cairo_create(window->cairo_surface);
1079         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1080         cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1081         cairo_paint(cr);
1082
1083         width = window->allocation.width;
1084         height = window->allocation.height;
1085         rounded_rect(cr, 0, 0, width, height, r);
1086
1087         cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1088         cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8);
1089         cairo_fill(cr);
1090
1091         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1092         cairo_move_to(cr, 10, 16);
1093         cairo_show_text(cr, tooltip->entry);
1094         cairo_destroy(cr);
1095 }
1096
1097 static cairo_text_extents_t
1098 get_text_extents(struct tooltip *tooltip)
1099 {
1100         struct window *window;
1101         cairo_t *cr;
1102         cairo_text_extents_t extents;
1103
1104         /* we borrow cairo_surface from the parent cause tooltip's wasn't
1105          * created yet */
1106         window = tooltip->widget->window->parent;
1107         cr = cairo_create(window->cairo_surface);
1108         cairo_text_extents(cr, tooltip->entry, &extents);
1109         cairo_destroy(cr);
1110
1111         return extents;
1112 }
1113
1114 static int
1115 window_create_tooltip(struct tooltip *tooltip)
1116 {
1117         struct widget *parent = tooltip->parent;
1118         struct display *display = parent->window->display;
1119         struct window *window;
1120         const int offset_y = 27;
1121         const int margin = 3;
1122         cairo_text_extents_t extents;
1123
1124         if (tooltip->widget)
1125                 return 0;
1126
1127         window = window_create_transient(display, parent->window, tooltip->x,
1128                                          tooltip->y + offset_y,
1129                                          WL_SHELL_SURFACE_TRANSIENT_INACTIVE);
1130         if (!window)
1131                 return -1;
1132
1133         tooltip->window = window;
1134         tooltip->widget = window_add_widget(tooltip->window, tooltip);
1135
1136         extents = get_text_extents(tooltip);
1137         widget_set_redraw_handler(tooltip->widget, tooltip_redraw_handler);
1138         window_schedule_resize(window, extents.width + 20, 20 + margin * 2);
1139
1140         return 0;
1141 }
1142
1143 void
1144 widget_destroy_tooltip(struct widget *parent)
1145 {
1146         struct tooltip *tooltip = parent->tooltip;
1147
1148         parent->tooltip_count = 0;
1149         if (!tooltip)
1150                 return;
1151
1152         if (tooltip->widget) {
1153                 widget_destroy(tooltip->widget);
1154                 window_destroy(tooltip->window);
1155                 tooltip->widget = NULL;
1156                 tooltip->window = NULL;
1157         }
1158
1159         close(tooltip->tooltip_fd);
1160         free(tooltip->entry);
1161         free(tooltip);
1162         parent->tooltip = NULL;
1163 }
1164
1165 static void
1166 tooltip_func(struct task *task, uint32_t events)
1167 {
1168         struct tooltip *tooltip =
1169                 container_of(task, struct tooltip, tooltip_task);
1170         uint64_t exp;
1171
1172         read(tooltip->tooltip_fd, &exp, sizeof (uint64_t));
1173         window_create_tooltip(tooltip);
1174 }
1175
1176 #define TOOLTIP_TIMEOUT 500
1177 static int
1178 tooltip_timer_reset(struct tooltip *tooltip)
1179 {
1180         struct itimerspec its;
1181
1182         its.it_interval.tv_sec = 0;
1183         its.it_interval.tv_nsec = 0;
1184         its.it_value.tv_sec = TOOLTIP_TIMEOUT / 1000;
1185         its.it_value.tv_nsec = (TOOLTIP_TIMEOUT % 1000) * 1000 * 1000;
1186         if (timerfd_settime(tooltip->tooltip_fd, 0, &its, NULL) < 0) {
1187                 fprintf(stderr, "could not set timerfd\n: %m");
1188                 return -1;
1189         }
1190
1191         return 0;
1192 }
1193
1194 int
1195 widget_set_tooltip(struct widget *parent, char *entry, float x, float y)
1196 {
1197         struct tooltip *tooltip = parent->tooltip;
1198
1199         parent->tooltip_count++;
1200         if (tooltip) {
1201                 tooltip->x = x;
1202                 tooltip->y = y;
1203                 tooltip_timer_reset(tooltip);
1204                 return 0;
1205         }
1206
1207         /* the handler might be triggered too fast via input device motion, so
1208          * we need this check here to make sure tooltip is fully initialized */
1209         if (parent->tooltip_count > 1)
1210                 return 0;
1211
1212         tooltip = malloc(sizeof *tooltip);
1213         if (!tooltip)
1214                 return -1;
1215
1216         parent->tooltip = tooltip;
1217         tooltip->parent = parent;
1218         tooltip->widget = NULL;
1219         tooltip->window = NULL;
1220         tooltip->x = x;
1221         tooltip->y = y;
1222         tooltip->entry = strdup(entry);
1223         tooltip->tooltip_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
1224         if (tooltip->tooltip_fd < 0) {
1225                 fprintf(stderr, "could not create timerfd\n: %m");
1226                 return -1;
1227         }
1228
1229         tooltip->tooltip_task.run = tooltip_func;
1230         display_watch_fd(parent->window->display, tooltip->tooltip_fd,
1231                          EPOLLIN, &tooltip->tooltip_task);
1232         tooltip_timer_reset(tooltip);
1233
1234         return 0;
1235 }
1236
1237 static void
1238 frame_resize_handler(struct widget *widget,
1239                      int32_t width, int32_t height, void *data)
1240 {
1241         struct frame *frame = data;
1242         struct widget *child = frame->child;
1243         struct rectangle allocation;
1244         struct display *display = widget->window->display;
1245         struct frame_button * button;
1246         struct theme *t = display->theme;
1247         int x_l, x_r, y, w, h;
1248         int decoration_width, decoration_height;
1249         int opaque_margin;
1250
1251         if (widget->window->type != TYPE_FULLSCREEN) {
1252                 decoration_width = (t->width + t->margin) * 2;
1253                 decoration_height = t->width +
1254                         t->titlebar_height + t->margin * 2;
1255
1256                 allocation.x = t->width + t->margin;
1257                 allocation.y = t->titlebar_height + t->margin;
1258                 allocation.width = width - decoration_width;
1259                 allocation.height = height - decoration_height;
1260
1261                 opaque_margin = t->margin + t->frame_radius;
1262
1263                 wl_list_for_each(button, &frame->buttons_list, link)
1264                         button->widget->opaque = 0;
1265         } else {
1266                 decoration_width = 0;
1267                 decoration_height = 0;
1268
1269                 allocation.x = 0;
1270                 allocation.y = 0;
1271                 allocation.width = width;
1272                 allocation.height = height;
1273                 opaque_margin = 0;
1274
1275                 wl_list_for_each(button, &frame->buttons_list, link)
1276                         button->widget->opaque = 1;
1277         }
1278
1279         widget_set_allocation(child, allocation.x, allocation.y,
1280                               allocation.width, allocation.height);
1281
1282         if (child->resize_handler)
1283                 child->resize_handler(child,
1284                                       allocation.width,
1285                                       allocation.height,
1286                                       child->user_data);
1287
1288         width = child->allocation.width + decoration_width;
1289         height = child->allocation.height + decoration_height;
1290
1291         widget->window->input_region =
1292                       wl_compositor_create_region(display->compositor);
1293         wl_region_add(widget->window->input_region,
1294                       t->margin, t->margin,
1295                       width - 2 * t->margin,
1296                       height - 2 * t->margin);
1297
1298         widget_set_allocation(widget, 0, 0, width, height);
1299
1300         if (child->opaque) {
1301                 widget->window->opaque_region =
1302                         wl_compositor_create_region(display->compositor);
1303                 wl_region_add(widget->window->opaque_region,
1304                               opaque_margin, opaque_margin,
1305                               widget->allocation.width - 2 * opaque_margin,
1306                               widget->allocation.height - 2 * opaque_margin);
1307         }
1308
1309         /* frame internal buttons */
1310         x_r = frame->widget->allocation.width - t->width - t->margin;
1311         x_l = t->width + t->margin;
1312         y = t->width + t->margin;
1313         wl_list_for_each(button, &frame->buttons_list, link) {
1314                 const int button_padding = 4;
1315                 w = cairo_image_surface_get_width(button->icon);
1316                 h = cairo_image_surface_get_height(button->icon);
1317
1318                 if (button->decoration == FRAME_BUTTON_FANCY)
1319                         w += 10;
1320
1321                 if (button->align == FRAME_BUTTON_LEFT) {
1322                         widget_set_allocation(button->widget,
1323                                               x_l, y , w + 1, h + 1);
1324                         x_l += w;
1325                         x_l += button_padding;
1326                 } else {
1327                         x_r -= w;
1328                         widget_set_allocation(button->widget,
1329                                               x_r, y , w + 1, h + 1);
1330                         x_r -= button_padding;
1331                 }
1332         }
1333 }
1334
1335 static int
1336 frame_button_enter_handler(struct widget *widget,
1337                            struct input *input, float x, float y, void *data)
1338 {
1339         struct frame_button *frame_button = data;
1340
1341         widget_schedule_redraw(frame_button->widget);
1342         frame_button->state = FRAME_BUTTON_OVER;
1343
1344         return CURSOR_LEFT_PTR;
1345 }
1346
1347 static void
1348 frame_button_leave_handler(struct widget *widget, struct input *input, void *data)
1349 {
1350         struct frame_button *frame_button = data;
1351
1352         widget_schedule_redraw(frame_button->widget);
1353         frame_button->state = FRAME_BUTTON_DEFAULT;
1354 }
1355
1356 static void
1357 frame_button_button_handler(struct widget *widget,
1358                             struct input *input, uint32_t time,
1359                             uint32_t button,
1360                             enum wl_pointer_button_state state, void *data)
1361 {
1362         struct frame_button *frame_button = data;
1363         struct window *window = widget->window;
1364
1365         if (button != BTN_LEFT)
1366                 return;
1367
1368         switch (state) {
1369         case WL_POINTER_BUTTON_STATE_PRESSED:
1370                 frame_button->state = FRAME_BUTTON_ACTIVE;
1371                 widget_schedule_redraw(frame_button->widget);
1372
1373                 if (frame_button->type == FRAME_BUTTON_ICON)
1374                         window_show_frame_menu(window, input, time);
1375                 return;
1376         case WL_POINTER_BUTTON_STATE_RELEASED:
1377                 frame_button->state = FRAME_BUTTON_DEFAULT;
1378                 widget_schedule_redraw(frame_button->widget);
1379                 break;
1380         }
1381
1382         switch (frame_button->type) {
1383         case FRAME_BUTTON_CLOSE:
1384                 if (window->close_handler)
1385                         window->close_handler(window->parent,
1386                                               window->user_data);
1387                 else
1388                         display_exit(window->display);
1389                 break;
1390         case FRAME_BUTTON_MINIMIZE:
1391                 fprintf(stderr,"Minimize stub\n");
1392                 break;
1393         case FRAME_BUTTON_MAXIMIZE:
1394                 window_set_maximized(window, window->type != TYPE_MAXIMIZED);
1395                 break;
1396         default:
1397                 /* Unknown operation */
1398                 break;
1399         }
1400 }
1401
1402 static void
1403 frame_button_redraw_handler(struct widget *widget, void *data)
1404 {
1405         struct frame_button *frame_button = data;
1406         cairo_t *cr;
1407         int width, height, x, y;
1408         struct window *window = widget->window;
1409
1410         x = widget->allocation.x;
1411         y = widget->allocation.y;
1412         width = widget->allocation.width;
1413         height = widget->allocation.height;
1414
1415         if (!width)
1416                 return;
1417         if (!height)
1418                 return;
1419         if (widget->opaque)
1420                 return;
1421
1422         cr = cairo_create(window->cairo_surface);
1423
1424         if (frame_button->decoration == FRAME_BUTTON_FANCY) {
1425                 cairo_set_line_width(cr, 1);
1426
1427                 cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1428                 cairo_rectangle (cr, x, y, 25, 16);
1429
1430                 cairo_stroke_preserve(cr);
1431
1432                 switch (frame_button->state) {
1433                 case FRAME_BUTTON_DEFAULT:
1434                         cairo_set_source_rgb(cr, 0.88, 0.88, 0.88);
1435                         break;
1436                 case FRAME_BUTTON_OVER:
1437                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1438                         break;
1439                 case FRAME_BUTTON_ACTIVE:
1440                         cairo_set_source_rgb(cr, 0.7, 0.7, 0.7);
1441                         break;
1442                 }
1443
1444                 cairo_fill (cr);
1445
1446                 x += 4;
1447         }
1448
1449         cairo_set_source_surface(cr, frame_button->icon, x, y);
1450         cairo_paint(cr);
1451
1452         cairo_destroy(cr);
1453 }
1454
1455 static struct widget *
1456 frame_button_create(struct frame *frame, void *data, enum frame_button_action type,
1457         enum frame_button_align align, enum frame_button_decoration style)
1458 {
1459         struct frame_button *frame_button;
1460         const char *icon = data;
1461
1462         frame_button = malloc (sizeof *frame_button);
1463         memset(frame_button, 0, sizeof *frame_button);
1464
1465         frame_button->icon = cairo_image_surface_create_from_png(icon);
1466         frame_button->widget = widget_add_widget(frame->widget, frame_button);
1467         frame_button->frame = frame;
1468         frame_button->type = type;
1469         frame_button->align = align;
1470         frame_button->decoration = style;
1471
1472         wl_list_insert(frame->buttons_list.prev, &frame_button->link);
1473
1474         widget_set_redraw_handler(frame_button->widget, frame_button_redraw_handler);
1475         widget_set_enter_handler(frame_button->widget, frame_button_enter_handler);
1476         widget_set_leave_handler(frame_button->widget, frame_button_leave_handler);
1477         widget_set_button_handler(frame_button->widget, frame_button_button_handler);
1478         return frame_button->widget;
1479 }
1480
1481 static void
1482 frame_button_destroy(struct frame_button *frame_button)
1483 {
1484         widget_destroy(frame_button->widget);
1485         wl_list_remove(&frame_button->link);
1486         cairo_surface_destroy(frame_button->icon);
1487         free(frame_button);
1488
1489         return;
1490 }
1491
1492 static void
1493 frame_redraw_handler(struct widget *widget, void *data)
1494 {
1495         cairo_t *cr;
1496         struct window *window = widget->window;
1497         struct theme *t = window->display->theme;
1498         uint32_t flags = 0;
1499
1500         if (window->type == TYPE_FULLSCREEN)
1501                 return;
1502
1503         cr = cairo_create(window->cairo_surface);
1504
1505         if (window->keyboard_device)
1506                 flags |= THEME_FRAME_ACTIVE;
1507         theme_render_frame(t, cr, widget->allocation.width,
1508                            widget->allocation.height, window->title, flags);
1509
1510         cairo_destroy(cr);
1511 }
1512
1513 static int
1514 frame_get_pointer_image_for_location(struct frame *frame, struct input *input)
1515 {
1516         struct theme *t = frame->widget->window->display->theme;
1517         int location;
1518
1519         location = theme_get_location(t, input->sx, input->sy,
1520                                       frame->widget->allocation.width,
1521                                       frame->widget->allocation.height);
1522
1523         switch (location) {
1524         case THEME_LOCATION_RESIZING_TOP:
1525                 return CURSOR_TOP;
1526         case THEME_LOCATION_RESIZING_BOTTOM:
1527                 return CURSOR_BOTTOM;
1528         case THEME_LOCATION_RESIZING_LEFT:
1529                 return CURSOR_LEFT;
1530         case THEME_LOCATION_RESIZING_RIGHT:
1531                 return CURSOR_RIGHT;
1532         case THEME_LOCATION_RESIZING_TOP_LEFT:
1533                 return CURSOR_TOP_LEFT;
1534         case THEME_LOCATION_RESIZING_TOP_RIGHT:
1535                 return CURSOR_TOP_RIGHT;
1536         case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
1537                 return CURSOR_BOTTOM_LEFT;
1538         case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
1539                 return CURSOR_BOTTOM_RIGHT;
1540         case THEME_LOCATION_EXTERIOR:
1541         case THEME_LOCATION_TITLEBAR:
1542         default:
1543                 return CURSOR_LEFT_PTR;
1544         }
1545 }
1546
1547 static void
1548 frame_menu_func(struct window *window, int index, void *data)
1549 {
1550         switch (index) {
1551         case 0: /* close */
1552                 if (window->close_handler)
1553                         window->close_handler(window->parent,
1554                                               window->user_data);
1555                 else
1556                         display_exit(window->display);
1557                 break;
1558         case 1: /* fullscreen */
1559                 /* we don't have a way to get out of fullscreen for now */
1560                 window_set_fullscreen(window, 1);
1561                 break;
1562         case 2: /* rotate */
1563         case 3: /* scale */
1564                 break;
1565         }
1566 }
1567
1568 void
1569 window_show_frame_menu(struct window *window,
1570                        struct input *input, uint32_t time)
1571 {
1572         int32_t x, y;
1573
1574         static const char *entries[] = {
1575                 "Close", "Fullscreen", "Rotate", "Scale"
1576         };
1577
1578         input_get_position(input, &x, &y);
1579         window_show_menu(window->display, input, time, window,
1580                          x - 10, y - 10, frame_menu_func, entries, 4);
1581 }
1582
1583 static int
1584 frame_enter_handler(struct widget *widget,
1585                     struct input *input, float x, float y, void *data)
1586 {
1587         return frame_get_pointer_image_for_location(data, input);
1588 }
1589
1590 static int
1591 frame_motion_handler(struct widget *widget,
1592                      struct input *input, uint32_t time,
1593                      float x, float y, void *data)
1594 {
1595         return frame_get_pointer_image_for_location(data, input);
1596 }
1597
1598 static void
1599 frame_button_handler(struct widget *widget,
1600                      struct input *input, uint32_t time,
1601                      uint32_t button, enum wl_pointer_button_state state,
1602                      void *data)
1603
1604 {
1605         struct frame *frame = data;
1606         struct window *window = widget->window;
1607         struct display *display = window->display;
1608         int location;
1609
1610         location = theme_get_location(display->theme, input->sx, input->sy,
1611                                       frame->widget->allocation.width,
1612                                       frame->widget->allocation.height);
1613
1614         if (window->display->shell && button == BTN_LEFT &&
1615             state == WL_POINTER_BUTTON_STATE_PRESSED) {
1616                 switch (location) {
1617                 case THEME_LOCATION_TITLEBAR:
1618                         if (!window->shell_surface)
1619                                 break;
1620                         input_set_pointer_image(input, CURSOR_DRAGGING);
1621                         input_ungrab(input);
1622                         wl_shell_surface_move(window->shell_surface,
1623                                               input_get_seat(input),
1624                                               display->serial);
1625                         break;
1626                 case THEME_LOCATION_RESIZING_TOP:
1627                 case THEME_LOCATION_RESIZING_BOTTOM:
1628                 case THEME_LOCATION_RESIZING_LEFT:
1629                 case THEME_LOCATION_RESIZING_RIGHT:
1630                 case THEME_LOCATION_RESIZING_TOP_LEFT:
1631                 case THEME_LOCATION_RESIZING_TOP_RIGHT:
1632                 case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
1633                 case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
1634                         if (!window->shell_surface)
1635                                 break;
1636                         input_ungrab(input);
1637
1638                         if (!display->dpy) {
1639                                 /* If we're using shm, allocate a big
1640                                    pool to create buffers out of while
1641                                    we resize.  We should probably base
1642                                    this number on the size of the output. */
1643                                 window->pool =
1644                                         shm_pool_create(display, 6 * 1024 * 1024);
1645                         }
1646
1647                         wl_shell_surface_resize(window->shell_surface,
1648                                                 input_get_seat(input),
1649                                                 display->serial, location);
1650                         break;
1651                 }
1652         } else if (button == BTN_RIGHT &&
1653                    state == WL_POINTER_BUTTON_STATE_PRESSED) {
1654                 window_show_frame_menu(window, input, time);
1655         }
1656 }
1657
1658 struct widget *
1659 frame_create(struct window *window, void *data)
1660 {
1661         struct frame *frame;
1662
1663         frame = malloc(sizeof *frame);
1664         memset(frame, 0, sizeof *frame);
1665
1666         frame->widget = window_add_widget(window, frame);
1667         frame->child = widget_add_widget(frame->widget, data);
1668
1669         widget_set_redraw_handler(frame->widget, frame_redraw_handler);
1670         widget_set_resize_handler(frame->widget, frame_resize_handler);
1671         widget_set_enter_handler(frame->widget, frame_enter_handler);
1672         widget_set_motion_handler(frame->widget, frame_motion_handler);
1673         widget_set_button_handler(frame->widget, frame_button_handler);
1674
1675         /* Create empty list for frame buttons */
1676         wl_list_init(&frame->buttons_list);
1677
1678         frame_button_create(frame, DATADIR "/weston/icon_window.png",
1679                 FRAME_BUTTON_ICON, FRAME_BUTTON_LEFT, FRAME_BUTTON_NONE);
1680
1681         frame_button_create(frame, DATADIR "/weston/sign_close.png",
1682                 FRAME_BUTTON_CLOSE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
1683
1684         frame_button_create(frame, DATADIR "/weston/sign_maximize.png",
1685                 FRAME_BUTTON_MAXIMIZE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
1686
1687         frame_button_create(frame, DATADIR "/weston/sign_minimize.png",
1688                 FRAME_BUTTON_MINIMIZE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
1689
1690         window->frame = frame;
1691
1692         return frame->child;
1693 }
1694
1695 static void
1696 frame_destroy(struct frame *frame)
1697 {
1698         struct frame_button *button, *tmp;
1699
1700         wl_list_for_each_safe(button, tmp, &frame->buttons_list, link)
1701                 frame_button_destroy(button);
1702
1703         /* frame->child must be destroyed by the application */
1704         widget_destroy(frame->widget);
1705         free(frame);
1706 }
1707
1708 static void
1709 input_set_focus_widget(struct input *input, struct widget *focus,
1710                        float x, float y)
1711 {
1712         struct widget *old, *widget;
1713         int pointer = CURSOR_LEFT_PTR;
1714
1715         if (focus == input->focus_widget)
1716                 return;
1717
1718         old = input->focus_widget;
1719         if (old) {
1720                 widget = old;
1721                 if (input->grab)
1722                         widget = input->grab;
1723                 if (widget->leave_handler)
1724                         widget->leave_handler(old, input, widget->user_data);
1725                 input->focus_widget = NULL;
1726         }
1727
1728         if (focus) {
1729                 widget = focus;
1730                 if (input->grab)
1731                         widget = input->grab;
1732                 input->focus_widget = focus;
1733                 if (widget->enter_handler)
1734                         pointer = widget->enter_handler(focus, input, x, y,
1735                                                         widget->user_data);
1736
1737                 input_set_pointer_image(input, pointer);
1738         }
1739 }
1740
1741 static void
1742 pointer_handle_motion(void *data, struct wl_pointer *pointer,
1743                       uint32_t time, wl_fixed_t sx_w, wl_fixed_t sy_w)
1744 {
1745         struct input *input = data;
1746         struct window *window = input->pointer_focus;
1747         struct widget *widget;
1748         int cursor = CURSOR_LEFT_PTR;
1749         float sx = wl_fixed_to_double(sx_w);
1750         float sy = wl_fixed_to_double(sy_w);
1751
1752         input->sx = sx;
1753         input->sy = sy;
1754
1755         if (!(input->grab && input->grab_button)) {
1756                 widget = widget_find_widget(window->widget, sx, sy);
1757                 input_set_focus_widget(input, widget, sx, sy);
1758         }
1759
1760         if (input->grab)
1761                 widget = input->grab;
1762         else
1763                 widget = input->focus_widget;
1764         if (widget && widget->motion_handler)
1765                 cursor = widget->motion_handler(input->focus_widget,
1766                                                 input, time, sx, sy,
1767                                                 widget->user_data);
1768
1769         input_set_pointer_image(input, cursor);
1770 }
1771
1772 void
1773 input_grab(struct input *input, struct widget *widget, uint32_t button)
1774 {
1775         input->grab = widget;
1776         input->grab_button = button;
1777 }
1778
1779 void
1780 input_ungrab(struct input *input)
1781 {
1782         struct widget *widget;
1783
1784         input->grab = NULL;
1785         if (input->pointer_focus) {
1786                 widget = widget_find_widget(input->pointer_focus->widget,
1787                                             input->sx, input->sy);
1788                 input_set_focus_widget(input, widget, input->sx, input->sy);
1789         }
1790 }
1791
1792 static void
1793 pointer_handle_button(void *data, struct wl_pointer *pointer, uint32_t serial,
1794                       uint32_t time, uint32_t button, uint32_t state_w)
1795 {
1796         struct input *input = data;
1797         struct widget *widget;
1798         enum wl_pointer_button_state state = state_w;
1799
1800         input->display->serial = serial;
1801         if (input->focus_widget && input->grab == NULL &&
1802             state == WL_POINTER_BUTTON_STATE_PRESSED)
1803                 input_grab(input, input->focus_widget, button);
1804
1805         widget = input->grab;
1806         if (widget && widget->button_handler)
1807                 (*widget->button_handler)(widget,
1808                                           input, time,
1809                                           button, state,
1810                                           input->grab->user_data);
1811
1812         if (input->grab && input->grab_button == button &&
1813             state == WL_POINTER_BUTTON_STATE_RELEASED)
1814                 input_ungrab(input);
1815 }
1816
1817 static void
1818 pointer_handle_axis(void *data, struct wl_pointer *pointer,
1819                     uint32_t time, uint32_t axis, wl_fixed_t value)
1820 {
1821 }
1822
1823 static void
1824 keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
1825                     uint32_t serial, uint32_t time, uint32_t key,
1826                     uint32_t state_w)
1827 {
1828         struct input *input = data;
1829         struct window *window = input->keyboard_focus;
1830         uint32_t code, num_syms;
1831         enum wl_keyboard_key_state state = state_w;
1832         const xkb_keysym_t *syms;
1833         xkb_keysym_t sym;
1834         xkb_mod_mask_t mask;
1835         struct itimerspec its;
1836
1837         input->display->serial = serial;
1838         code = key + 8;
1839         if (!window || window->keyboard_device != input || !input->xkb.state)
1840                 return;
1841
1842         num_syms = xkb_key_get_syms(input->xkb.state, code, &syms);
1843
1844         mask = xkb_state_serialize_mods(input->xkb.state,
1845                                         XKB_STATE_DEPRESSED |
1846                                         XKB_STATE_LATCHED);
1847         input->modifiers = 0;
1848         if (mask & input->xkb.control_mask)
1849                 input->modifiers |= MOD_CONTROL_MASK;
1850         if (mask & input->xkb.alt_mask)
1851                 input->modifiers |= MOD_ALT_MASK;
1852         if (mask & input->xkb.shift_mask)
1853                 input->modifiers |= MOD_SHIFT_MASK;
1854
1855         sym = XKB_KEY_NoSymbol;
1856         if (num_syms == 1)
1857                 sym = syms[0];
1858
1859         if (sym == XKB_KEY_F5 && input->modifiers == MOD_ALT_MASK) {
1860                 if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
1861                         window_set_maximized(window,
1862                                              window->type != TYPE_MAXIMIZED);
1863         } else if (window->key_handler) {
1864                 (*window->key_handler)(window, input, time, key,
1865                                        sym, state, window->user_data);
1866         }
1867
1868         if (state == WL_KEYBOARD_KEY_STATE_RELEASED &&
1869             key == input->repeat_key) {
1870                 its.it_interval.tv_sec = 0;
1871                 its.it_interval.tv_nsec = 0;
1872                 its.it_value.tv_sec = 0;
1873                 its.it_value.tv_nsec = 0;
1874                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
1875         } else if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
1876                 input->repeat_sym = sym;
1877                 input->repeat_key = key;
1878                 input->repeat_time = time;
1879                 its.it_interval.tv_sec = 0;
1880                 its.it_interval.tv_nsec = 25 * 1000 * 1000;
1881                 its.it_value.tv_sec = 0;
1882                 its.it_value.tv_nsec = 400 * 1000 * 1000;
1883                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
1884         }
1885 }
1886
1887 static void
1888 keyboard_repeat_func(struct task *task, uint32_t events)
1889 {
1890         struct input *input =
1891                 container_of(task, struct input, repeat_task);
1892         struct window *window = input->keyboard_focus;
1893         uint64_t exp;
1894
1895         read(input->repeat_timer_fd, &exp, sizeof (uint64_t));
1896
1897         if (window && window->key_handler) {
1898                 (*window->key_handler)(window, input, input->repeat_time,
1899                                        input->repeat_key, input->repeat_sym,
1900                                        WL_KEYBOARD_KEY_STATE_PRESSED,
1901                                        window->user_data);
1902         }
1903 }
1904
1905 static void
1906 keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
1907                           uint32_t serial, uint32_t mods_depressed,
1908                           uint32_t mods_latched, uint32_t mods_locked,
1909                           uint32_t group)
1910 {
1911         struct input *input = data;
1912
1913         xkb_state_update_mask(input->xkb.state, mods_depressed, mods_latched,
1914                               mods_locked, 0, 0, group);
1915 }
1916
1917 static void
1918 input_remove_pointer_focus(struct input *input)
1919 {
1920         struct window *window = input->pointer_focus;
1921
1922         if (!window)
1923                 return;
1924
1925         input_set_focus_widget(input, NULL, 0, 0);
1926
1927         input->pointer_focus = NULL;
1928         input->current_cursor = CURSOR_UNSET;
1929 }
1930
1931 static void
1932 pointer_handle_enter(void *data, struct wl_pointer *pointer,
1933                      uint32_t serial, struct wl_surface *surface,
1934                      wl_fixed_t sx_w, wl_fixed_t sy_w)
1935 {
1936         struct input *input = data;
1937         struct window *window;
1938         struct widget *widget;
1939         float sx = wl_fixed_to_double(sx_w);
1940         float sy = wl_fixed_to_double(sy_w);
1941
1942         if (!surface) {
1943                 /* enter event for a window we've just destroyed */
1944                 return;
1945         }
1946
1947         input->display->serial = serial;
1948         input->pointer_enter_serial = serial;
1949         input->pointer_focus = wl_surface_get_user_data(surface);
1950         window = input->pointer_focus;
1951
1952         if (window->pool) {
1953                 shm_pool_destroy(window->pool);
1954                 window->pool = NULL;
1955                 /* Schedule a redraw to free the pool */
1956                 window_schedule_redraw(window);
1957         }
1958
1959         input->sx = sx;
1960         input->sy = sy;
1961
1962         widget = widget_find_widget(window->widget, sx, sy);
1963         input_set_focus_widget(input, widget, sx, sy);
1964 }
1965
1966 static void
1967 pointer_handle_leave(void *data, struct wl_pointer *pointer,
1968                      uint32_t serial, struct wl_surface *surface)
1969 {
1970         struct input *input = data;
1971
1972         input->display->serial = serial;
1973         input_remove_pointer_focus(input);
1974 }
1975
1976 static void
1977 input_remove_keyboard_focus(struct input *input)
1978 {
1979         struct window *window = input->keyboard_focus;
1980
1981         if (!window)
1982                 return;
1983
1984         window->keyboard_device = NULL;
1985         if (window->keyboard_focus_handler)
1986                 (*window->keyboard_focus_handler)(window, NULL,
1987                                                   window->user_data);
1988
1989         input->keyboard_focus = NULL;
1990 }
1991
1992 static void
1993 keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
1994                       uint32_t serial, struct wl_surface *surface,
1995                       struct wl_array *keys)
1996 {
1997         struct input *input = data;
1998         struct window *window;
1999
2000         input->display->serial = serial;
2001         input->keyboard_focus = wl_surface_get_user_data(surface);
2002
2003         window = input->keyboard_focus;
2004         window->keyboard_device = input;
2005         if (window->keyboard_focus_handler)
2006                 (*window->keyboard_focus_handler)(window,
2007                                                   window->keyboard_device,
2008                                                   window->user_data);
2009 }
2010
2011 static void
2012 keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,
2013                       uint32_t serial, struct wl_surface *surface)
2014 {
2015         struct input *input = data;
2016
2017         input->display->serial = serial;
2018         input_remove_keyboard_focus(input);
2019 }
2020
2021 static void
2022 keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
2023                        uint32_t format, int fd, uint32_t size)
2024 {
2025         struct input *input = data;
2026         char *map_str;
2027
2028         if (!data) {
2029                 close(fd);
2030                 return;
2031         }
2032
2033         if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
2034                 close(fd);
2035                 return;
2036         }
2037
2038         map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
2039         if (map_str == MAP_FAILED) {
2040                 close(fd);
2041                 return;
2042         }
2043
2044         input->xkb.keymap = xkb_map_new_from_string(input->display->xkb_context,
2045                                                     map_str,
2046                                                     XKB_KEYMAP_FORMAT_TEXT_V1,
2047                                                     0);
2048         munmap(map_str, size);
2049         close(fd);
2050
2051         if (!input->xkb.keymap) {
2052                 fprintf(stderr, "failed to compile keymap\n");
2053                 return;
2054         }
2055
2056         input->xkb.state = xkb_state_new(input->xkb.keymap);
2057         if (!input->xkb.state) {
2058                 fprintf(stderr, "failed to create XKB state\n");
2059                 xkb_map_unref(input->xkb.keymap);
2060                 input->xkb.keymap = NULL;
2061                 return;
2062         }
2063
2064         input->xkb.control_mask =
2065                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Control");
2066         input->xkb.alt_mask =
2067                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Mod1");
2068         input->xkb.shift_mask =
2069                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Shift");
2070 }
2071
2072 static const struct wl_pointer_listener pointer_listener = {
2073         pointer_handle_enter,
2074         pointer_handle_leave,
2075         pointer_handle_motion,
2076         pointer_handle_button,
2077         pointer_handle_axis,
2078 };
2079
2080 static const struct wl_keyboard_listener keyboard_listener = {
2081         keyboard_handle_keymap,
2082         keyboard_handle_enter,
2083         keyboard_handle_leave,
2084         keyboard_handle_key,
2085         keyboard_handle_modifiers,
2086 };
2087
2088 static void
2089 seat_handle_capabilities(void *data, struct wl_seat *seat,
2090                          enum wl_seat_capability caps)
2091 {
2092         struct input *input = data;
2093
2094         if ((caps & WL_SEAT_CAPABILITY_POINTER) && !input->pointer) {
2095                 input->pointer = wl_seat_get_pointer(seat);
2096                 wl_pointer_set_user_data(input->pointer, input);
2097                 wl_pointer_add_listener(input->pointer, &pointer_listener,
2098                                         input);
2099         } else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && input->pointer) {
2100                 wl_pointer_destroy(input->pointer);
2101                 input->pointer = NULL;
2102         }
2103
2104         if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
2105                 input->keyboard = wl_seat_get_keyboard(seat);
2106                 wl_keyboard_set_user_data(input->keyboard, input);
2107                 wl_keyboard_add_listener(input->keyboard, &keyboard_listener,
2108                                          input);
2109         } else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) {
2110                 wl_keyboard_destroy(input->keyboard);
2111                 input->keyboard = NULL;
2112         }
2113 }
2114
2115 static const struct wl_seat_listener seat_listener = {
2116         seat_handle_capabilities,
2117 };
2118
2119 void
2120 input_get_position(struct input *input, int32_t *x, int32_t *y)
2121 {
2122         *x = input->sx;
2123         *y = input->sy;
2124 }
2125
2126 struct display *
2127 input_get_display(struct input *input)
2128 {
2129         return input->display;
2130 }
2131
2132 struct wl_seat *
2133 input_get_seat(struct input *input)
2134 {
2135         return input->seat;
2136 }
2137
2138 uint32_t
2139 input_get_modifiers(struct input *input)
2140 {
2141         return input->modifiers;
2142 }
2143
2144 struct widget *
2145 input_get_focus_widget(struct input *input)
2146 {
2147         return input->focus_widget;
2148 }
2149
2150 struct data_offer {
2151         struct wl_data_offer *offer;
2152         struct input *input;
2153         struct wl_array types;
2154         int refcount;
2155
2156         struct task io_task;
2157         int fd;
2158         data_func_t func;
2159         int32_t x, y;
2160         void *user_data;
2161 };
2162
2163 static void
2164 data_offer_offer(void *data, struct wl_data_offer *wl_data_offer, const char *type)
2165 {
2166         struct data_offer *offer = data;
2167         char **p;
2168
2169         p = wl_array_add(&offer->types, sizeof *p);
2170         *p = strdup(type);
2171 }
2172
2173 static const struct wl_data_offer_listener data_offer_listener = {
2174         data_offer_offer,
2175 };
2176
2177 static void
2178 data_offer_destroy(struct data_offer *offer)
2179 {
2180         char **p;
2181
2182         offer->refcount--;
2183         if (offer->refcount == 0) {
2184                 wl_data_offer_destroy(offer->offer);
2185                 for (p = offer->types.data; *p; p++)
2186                         free(*p);
2187                 wl_array_release(&offer->types);
2188                 free(offer);
2189         }
2190 }
2191
2192 static void
2193 data_device_data_offer(void *data,
2194                        struct wl_data_device *data_device, uint32_t id)
2195 {
2196         struct data_offer *offer;
2197
2198         offer = malloc(sizeof *offer);
2199
2200         wl_array_init(&offer->types);
2201         offer->refcount = 1;
2202         offer->input = data;
2203
2204         /* FIXME: Generate typesafe wrappers for this */
2205         offer->offer = (struct wl_data_offer *)
2206                 wl_proxy_create_for_id((struct wl_proxy *) data_device,
2207                                        id, &wl_data_offer_interface);
2208
2209         wl_data_offer_add_listener(offer->offer,
2210                                    &data_offer_listener, offer);
2211 }
2212
2213 static void
2214 data_device_enter(void *data, struct wl_data_device *data_device,
2215                   uint32_t serial, struct wl_surface *surface,
2216                   wl_fixed_t x_w, wl_fixed_t y_w,
2217                   struct wl_data_offer *offer)
2218 {
2219         struct input *input = data;
2220         struct window *window;
2221         void *types_data;
2222         float x = wl_fixed_to_double(x_w);
2223         float y = wl_fixed_to_double(y_w);
2224         char **p;
2225
2226         input->pointer_enter_serial = serial;
2227         window = wl_surface_get_user_data(surface);
2228         input->pointer_focus = window;
2229
2230         if (offer) {
2231                 input->drag_offer = wl_data_offer_get_user_data(offer);
2232
2233                 p = wl_array_add(&input->drag_offer->types, sizeof *p);
2234                 *p = NULL;
2235
2236                 types_data = input->drag_offer->types.data;
2237         } else {
2238                 input->drag_offer = NULL;
2239                 types_data = NULL;
2240         }
2241
2242         window = input->pointer_focus;
2243         if (window->data_handler)
2244                 window->data_handler(window, input, x, y, types_data,
2245                                      window->user_data);
2246 }
2247
2248 static void
2249 data_device_leave(void *data, struct wl_data_device *data_device)
2250 {
2251         struct input *input = data;
2252
2253         if (input->drag_offer) {
2254                 data_offer_destroy(input->drag_offer);
2255                 input->drag_offer = NULL;
2256         }
2257 }
2258
2259 static void
2260 data_device_motion(void *data, struct wl_data_device *data_device,
2261                    uint32_t time, wl_fixed_t x_w, wl_fixed_t y_w)
2262 {
2263         struct input *input = data;
2264         struct window *window = input->pointer_focus;
2265         float x = wl_fixed_to_double(x_w);
2266         float y = wl_fixed_to_double(y_w);
2267         void *types_data;
2268
2269         input->sx = x;
2270         input->sy = y;
2271
2272         if (input->drag_offer)
2273                 types_data = input->drag_offer->types.data;
2274         else
2275                 types_data = NULL;
2276
2277         if (window->data_handler)
2278                 window->data_handler(window, input, x, y, types_data,
2279                                      window->user_data);
2280 }
2281
2282 static void
2283 data_device_drop(void *data, struct wl_data_device *data_device)
2284 {
2285         struct input *input = data;
2286         struct window *window = input->pointer_focus;
2287
2288         if (window->drop_handler)
2289                 window->drop_handler(window, input,
2290                                      input->sx, input->sy, window->user_data);
2291 }
2292
2293 static void
2294 data_device_selection(void *data,
2295                       struct wl_data_device *wl_data_device,
2296                       struct wl_data_offer *offer)
2297 {
2298         struct input *input = data;
2299         char **p;
2300
2301         if (input->selection_offer)
2302                 data_offer_destroy(input->selection_offer);
2303
2304         if (offer) {
2305                 input->selection_offer = wl_data_offer_get_user_data(offer);
2306                 p = wl_array_add(&input->selection_offer->types, sizeof *p);
2307                 *p = NULL;
2308         } else {
2309                 input->selection_offer = NULL;
2310         }
2311 }
2312
2313 static const struct wl_data_device_listener data_device_listener = {
2314         data_device_data_offer,
2315         data_device_enter,
2316         data_device_leave,
2317         data_device_motion,
2318         data_device_drop,
2319         data_device_selection
2320 };
2321
2322 static void
2323 input_set_pointer_image_index(struct input *input, int index)
2324 {
2325         struct wl_buffer *buffer;
2326         struct wl_cursor *cursor;
2327         struct wl_cursor_image *image;
2328
2329         cursor = input->display->cursors[input->current_cursor];
2330         if (!cursor)
2331                 return;
2332
2333         if (index >= (int) cursor->image_count) {
2334                 fprintf(stderr, "cursor index out of range\n");
2335                 return;
2336         }
2337
2338         image = cursor->images[index];
2339         buffer = wl_cursor_image_get_buffer(image);
2340         if (!buffer)
2341                 return;
2342
2343         wl_pointer_set_cursor(input->pointer, input->display->serial,
2344                               input->pointer_surface,
2345                               image->hotspot_x, image->hotspot_y);
2346         wl_surface_attach(input->pointer_surface, buffer, 0, 0);
2347         wl_surface_damage(input->pointer_surface, 0, 0,
2348                           image->width, image->height);
2349 }
2350
2351 static const struct wl_callback_listener pointer_surface_listener;
2352
2353 static void
2354 pointer_surface_frame_callback(void *data, struct wl_callback *callback,
2355                                uint32_t time)
2356 {
2357         struct input *input = data;
2358         struct wl_cursor *cursor;
2359         int i;
2360
2361         if (callback) {
2362                 assert(callback == input->cursor_frame_cb);
2363                 wl_callback_destroy(callback);
2364                 input->cursor_frame_cb = NULL;
2365         }
2366
2367         if (input->current_cursor == CURSOR_UNSET)
2368                 return;
2369         cursor = input->display->cursors[input->current_cursor];
2370         if (!cursor)
2371                 return;
2372
2373         /* FIXME We don't have the current time on the first call so we set
2374          * the animation start to the time of the first frame callback. */
2375         if (time == 0)
2376                 input->cursor_anim_start = 0;
2377         else if (input->cursor_anim_start == 0)
2378                 input->cursor_anim_start = time;
2379
2380         if (time == 0 || input->cursor_anim_start == 0)
2381                 i = 0;
2382         else
2383                 i = wl_cursor_frame(cursor, time - input->cursor_anim_start);
2384
2385         input_set_pointer_image_index(input, i);
2386
2387         if (cursor->image_count == 1)
2388                 return;
2389
2390         input->cursor_frame_cb = wl_surface_frame(input->pointer_surface);
2391         wl_callback_add_listener(input->cursor_frame_cb,
2392                                  &pointer_surface_listener, input);
2393 }
2394
2395 static const struct wl_callback_listener pointer_surface_listener = {
2396         pointer_surface_frame_callback
2397 };
2398
2399 void
2400 input_set_pointer_image(struct input *input, int pointer)
2401 {
2402         if (pointer == input->current_cursor)
2403                 return;
2404
2405         input->current_cursor = pointer;
2406         if (!input->cursor_frame_cb)
2407                 pointer_surface_frame_callback(input, NULL, 0);
2408 }
2409
2410 struct wl_data_device *
2411 input_get_data_device(struct input *input)
2412 {
2413         return input->data_device;
2414 }
2415
2416 void
2417 input_set_selection(struct input *input,
2418                     struct wl_data_source *source, uint32_t time)
2419 {
2420         wl_data_device_set_selection(input->data_device, source, time);
2421 }
2422
2423 void
2424 input_accept(struct input *input, const char *type)
2425 {
2426         wl_data_offer_accept(input->drag_offer->offer,
2427                              input->pointer_enter_serial, type);
2428 }
2429
2430 static void
2431 offer_io_func(struct task *task, uint32_t events)
2432 {
2433         struct data_offer *offer =
2434                 container_of(task, struct data_offer, io_task);
2435         unsigned int len;
2436         char buffer[4096];
2437
2438         len = read(offer->fd, buffer, sizeof buffer);
2439         offer->func(buffer, len,
2440                     offer->x, offer->y, offer->user_data);
2441
2442         if (len == 0) {
2443                 close(offer->fd);
2444                 data_offer_destroy(offer);
2445         }
2446 }
2447
2448 static void
2449 data_offer_receive_data(struct data_offer *offer, const char *mime_type,
2450                         data_func_t func, void *user_data)
2451 {
2452         int p[2];
2453
2454         if (pipe2(p, O_CLOEXEC) == -1)
2455                 return;
2456
2457         wl_data_offer_receive(offer->offer, mime_type, p[1]);
2458         close(p[1]);
2459
2460         offer->io_task.run = offer_io_func;
2461         offer->fd = p[0];
2462         offer->func = func;
2463         offer->refcount++;
2464         offer->user_data = user_data;
2465
2466         display_watch_fd(offer->input->display,
2467                          offer->fd, EPOLLIN, &offer->io_task);
2468 }
2469
2470 void
2471 input_receive_drag_data(struct input *input, const char *mime_type,
2472                         data_func_t func, void *data)
2473 {
2474         data_offer_receive_data(input->drag_offer, mime_type, func, data);
2475         input->drag_offer->x = input->sx;
2476         input->drag_offer->y = input->sy;
2477 }
2478
2479 int
2480 input_receive_selection_data(struct input *input, const char *mime_type,
2481                              data_func_t func, void *data)
2482 {
2483         char **p;
2484
2485         if (input->selection_offer == NULL)
2486                 return -1;
2487
2488         for (p = input->selection_offer->types.data; *p; p++)
2489                 if (strcmp(mime_type, *p) == 0)
2490                         break;
2491
2492         if (*p == NULL)
2493                 return -1;
2494
2495         data_offer_receive_data(input->selection_offer,
2496                                 mime_type, func, data);
2497         return 0;
2498 }
2499
2500 int
2501 input_receive_selection_data_to_fd(struct input *input,
2502                                    const char *mime_type, int fd)
2503 {
2504         if (input->selection_offer)
2505                 wl_data_offer_receive(input->selection_offer->offer,
2506                                       mime_type, fd);
2507
2508         return 0;
2509 }
2510
2511 void
2512 window_move(struct window *window, struct input *input, uint32_t serial)
2513 {
2514         if (!window->shell_surface)
2515                 return;
2516
2517         wl_shell_surface_move(window->shell_surface, input->seat, serial);
2518 }
2519
2520 static void
2521 idle_resize(struct window *window)
2522 {
2523         struct widget *widget;
2524
2525         window->resize_needed = 0;
2526         widget = window->widget;
2527         widget_set_allocation(widget,
2528                               window->pending_allocation.x,
2529                               window->pending_allocation.y,
2530                               window->pending_allocation.width,
2531                               window->pending_allocation.height);
2532
2533         if (window->input_region) {
2534                 wl_region_destroy(window->input_region);
2535                 window->input_region = NULL;
2536         }
2537
2538         if (window->opaque_region) {
2539                 wl_region_destroy(window->opaque_region);
2540                 window->opaque_region = NULL;
2541         }
2542
2543         if (widget->resize_handler)
2544                 widget->resize_handler(widget,
2545                                        widget->allocation.width,
2546                                        widget->allocation.height,
2547                                        widget->user_data);
2548
2549         if (window->allocation.width != widget->allocation.width ||
2550             window->allocation.height != widget->allocation.height) {
2551                 window->allocation = widget->allocation;
2552                 window_schedule_redraw(window);
2553         }
2554 }
2555
2556 void
2557 window_schedule_resize(struct window *window, int width, int height)
2558 {
2559         window->pending_allocation.x = 0;
2560         window->pending_allocation.y = 0;
2561         window->pending_allocation.width = width;
2562         window->pending_allocation.height = height;
2563
2564         window->resize_needed = 1;
2565         window_schedule_redraw(window);
2566 }
2567
2568 void
2569 widget_schedule_resize(struct widget *widget, int32_t width, int32_t height)
2570 {
2571         window_schedule_resize(widget->window, width, height);
2572 }
2573
2574 static void
2575 handle_ping(void *data, struct wl_shell_surface *shell_surface,
2576                                                         uint32_t serial)
2577 {
2578         wl_shell_surface_pong(shell_surface, serial);
2579 }
2580
2581 static void
2582 handle_configure(void *data, struct wl_shell_surface *shell_surface,
2583                  uint32_t edges, int32_t width, int32_t height)
2584 {
2585         struct window *window = data;
2586
2587         if (width <= 0 || height <= 0)
2588                 return;
2589
2590         window->resize_edges = edges;
2591         window_schedule_resize(window, width, height);
2592 }
2593
2594 static void
2595 menu_destroy(struct menu *menu)
2596 {
2597         widget_destroy(menu->widget);
2598         window_destroy(menu->window);
2599         free(menu);
2600 }
2601
2602 static void
2603 handle_popup_done(void *data, struct wl_shell_surface *shell_surface)
2604 {
2605         struct window *window = data;
2606         struct menu *menu = window->widget->user_data;
2607
2608         /* FIXME: Need more context in this event, at least the input
2609          * device.  Or just use wl_callback.  And this really needs to
2610          * be a window vfunc that the menu can set.  And we need the
2611          * time. */
2612
2613         menu->func(window->parent, menu->current, window->parent->user_data);
2614         input_ungrab(menu->input);
2615         menu_destroy(menu);
2616 }
2617
2618 static const struct wl_shell_surface_listener shell_surface_listener = {
2619         handle_ping,
2620         handle_configure,
2621         handle_popup_done
2622 };
2623
2624 void
2625 window_get_allocation(struct window *window,
2626                       struct rectangle *allocation)
2627 {
2628         *allocation = window->allocation;
2629 }
2630
2631 static void
2632 widget_redraw(struct widget *widget)
2633 {
2634         struct widget *child;
2635
2636         if (widget->redraw_handler)
2637                 widget->redraw_handler(widget, widget->user_data);
2638         wl_list_for_each(child, &widget->child_list, link)
2639                 widget_redraw(child);
2640 }
2641
2642 static void
2643 frame_callback(void *data, struct wl_callback *callback, uint32_t time)
2644 {
2645         struct window *window = data;
2646
2647         wl_callback_destroy(callback);
2648         window->redraw_scheduled = 0;
2649         if (window->redraw_needed)
2650                 window_schedule_redraw(window);
2651 }
2652
2653 static const struct wl_callback_listener listener = {
2654         frame_callback
2655 };
2656
2657 static void
2658 idle_redraw(struct task *task, uint32_t events)
2659 {
2660         struct window *window = container_of(task, struct window, redraw_task);
2661         struct wl_callback *callback;
2662
2663         if (window->resize_needed)
2664                 idle_resize(window);
2665
2666         window_create_surface(window);
2667         widget_redraw(window->widget);
2668         window_flush(window);
2669         window->redraw_needed = 0;
2670         wl_list_init(&window->redraw_task.link);
2671
2672         callback = wl_surface_frame(window->surface);
2673         wl_callback_add_listener(callback, &listener, window);
2674 }
2675
2676 void
2677 window_schedule_redraw(struct window *window)
2678 {
2679         window->redraw_needed = 1;
2680         if (!window->redraw_scheduled) {
2681                 window->redraw_task.run = idle_redraw;
2682                 display_defer(window->display, &window->redraw_task);
2683                 window->redraw_scheduled = 1;
2684         }
2685 }
2686
2687 void
2688 window_set_custom(struct window *window)
2689 {
2690         window->type = TYPE_CUSTOM;
2691 }
2692
2693 void
2694 window_set_fullscreen(struct window *window, int fullscreen)
2695 {
2696         if (!window->display->shell)
2697                 return;
2698
2699         if ((window->type == TYPE_FULLSCREEN) == fullscreen)
2700                 return;
2701
2702         if (fullscreen) {
2703                 window->type = TYPE_FULLSCREEN;
2704                 window->saved_allocation = window->allocation;
2705                 wl_shell_surface_set_fullscreen(window->shell_surface,
2706                                                 WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT,
2707                                                 0, NULL);
2708         } else {
2709                 window->type = TYPE_TOPLEVEL;
2710                 wl_shell_surface_set_toplevel(window->shell_surface);
2711                 window_schedule_resize(window,
2712                                        window->saved_allocation.width,
2713                                        window->saved_allocation.height);
2714         }
2715 }
2716
2717 void
2718 window_set_maximized(struct window *window, int maximized)
2719 {
2720         if (!window->display->shell)
2721                 return;
2722
2723         if ((window->type == TYPE_MAXIMIZED) == maximized)
2724                 return;
2725
2726         if (window->type == TYPE_TOPLEVEL) {
2727                 window->saved_allocation = window->allocation;
2728                 wl_shell_surface_set_maximized(window->shell_surface, NULL);
2729                 window->type = TYPE_MAXIMIZED;
2730         } else {
2731                 wl_shell_surface_set_toplevel(window->shell_surface);
2732                 window->type = TYPE_TOPLEVEL;
2733                 window_schedule_resize(window,
2734                                        window->saved_allocation.width,
2735                                        window->saved_allocation.height);
2736         }
2737 }
2738
2739 void
2740 window_set_user_data(struct window *window, void *data)
2741 {
2742         window->user_data = data;
2743 }
2744
2745 void *
2746 window_get_user_data(struct window *window)
2747 {
2748         return window->user_data;
2749 }
2750
2751 void
2752 window_set_key_handler(struct window *window,
2753                        window_key_handler_t handler)
2754 {
2755         window->key_handler = handler;
2756 }
2757
2758 void
2759 window_set_keyboard_focus_handler(struct window *window,
2760                                   window_keyboard_focus_handler_t handler)
2761 {
2762         window->keyboard_focus_handler = handler;
2763 }
2764
2765 void
2766 window_set_data_handler(struct window *window, window_data_handler_t handler)
2767 {
2768         window->data_handler = handler;
2769 }
2770
2771 void
2772 window_set_drop_handler(struct window *window, window_drop_handler_t handler)
2773 {
2774         window->drop_handler = handler;
2775 }
2776
2777 void
2778 window_set_close_handler(struct window *window,
2779                          window_close_handler_t handler)
2780 {
2781         window->close_handler = handler;
2782 }
2783
2784 void
2785 window_set_title(struct window *window, const char *title)
2786 {
2787         free(window->title);
2788         window->title = strdup(title);
2789         if (window->shell_surface)
2790                 wl_shell_surface_set_title(window->shell_surface, title);
2791 }
2792
2793 const char *
2794 window_get_title(struct window *window)
2795 {
2796         return window->title;
2797 }
2798
2799 void
2800 window_set_text_cursor_position(struct window *window, int32_t x, int32_t y)
2801 {
2802         struct text_cursor_position *text_cursor_position =
2803                                         window->display->text_cursor_position;
2804
2805         if (!text_cursor_position)
2806                 return;
2807
2808         text_cursor_position_notify(text_cursor_position,
2809                                                 window->surface,
2810                                                 wl_fixed_from_int(x),
2811                                                 wl_fixed_from_int(y));
2812 }
2813
2814 void
2815 window_damage(struct window *window, int32_t x, int32_t y,
2816               int32_t width, int32_t height)
2817 {
2818         wl_surface_damage(window->surface, x, y, width, height);
2819 }
2820
2821 static void
2822 surface_enter(void *data,
2823               struct wl_surface *wl_surface, struct wl_output *wl_output)
2824 {
2825         struct window *window = data;
2826         struct output *output;
2827         struct output *output_found = NULL;
2828         struct window_output *window_output;
2829
2830         wl_list_for_each(output, &window->display->output_list, link) {
2831                 if (output->output == wl_output) {
2832                         output_found = output;
2833                         break;
2834                 }
2835         }
2836
2837         if (!output_found)
2838                 return;
2839
2840         window_output = malloc (sizeof *window_output);
2841         window_output->output = output_found;
2842
2843         wl_list_insert (&window->window_output_list, &window_output->link);
2844 }
2845
2846 static void
2847 surface_leave(void *data,
2848               struct wl_surface *wl_surface, struct wl_output *output)
2849 {
2850         struct window *window = data;
2851         struct window_output *window_output;
2852         struct window_output *window_output_found = NULL;
2853
2854         wl_list_for_each(window_output, &window->window_output_list, link) {
2855                 if (window_output->output->output == output) {
2856                         window_output_found = window_output;
2857                         break;
2858                 }
2859         }
2860
2861         if (window_output_found) {
2862                 wl_list_remove(&window_output_found->link);
2863                 free(window_output_found);
2864         }
2865 }
2866
2867 static const struct wl_surface_listener surface_listener = {
2868         surface_enter,
2869         surface_leave
2870 };
2871
2872 static struct window *
2873 window_create_internal(struct display *display, struct window *parent)
2874 {
2875         struct window *window;
2876
2877         window = malloc(sizeof *window);
2878         if (window == NULL)
2879                 return NULL;
2880
2881         memset(window, 0, sizeof *window);
2882         window->display = display;
2883         window->parent = parent;
2884         window->surface = wl_compositor_create_surface(display->compositor);
2885         wl_surface_add_listener(window->surface, &surface_listener, window);
2886         if (display->shell) {
2887                 window->shell_surface =
2888                         wl_shell_get_shell_surface(display->shell,
2889                                                    window->surface);
2890                 if (window->title)
2891                         wl_shell_surface_set_title(window->shell_surface,
2892                                                    window->title);
2893         }
2894         window->allocation.x = 0;
2895         window->allocation.y = 0;
2896         window->allocation.width = 0;
2897         window->allocation.height = 0;
2898         window->saved_allocation = window->allocation;
2899         window->transparent = 1;
2900         window->type = TYPE_NONE;
2901         window->input_region = NULL;
2902         window->opaque_region = NULL;
2903
2904         if (display->dpy)
2905 #ifdef HAVE_CAIRO_EGL
2906                 window->buffer_type = WINDOW_BUFFER_TYPE_EGL_WINDOW;
2907 #else
2908                 window->buffer_type = WINDOW_BUFFER_TYPE_SHM;
2909 #endif
2910         else
2911                 window->buffer_type = WINDOW_BUFFER_TYPE_SHM;
2912
2913         wl_surface_set_user_data(window->surface, window);
2914         wl_list_insert(display->window_list.prev, &window->link);
2915         wl_list_init(&window->redraw_task.link);
2916
2917         if (window->shell_surface) {
2918                 wl_shell_surface_set_user_data(window->shell_surface, window);
2919                 wl_shell_surface_add_listener(window->shell_surface,
2920                                               &shell_surface_listener, window);
2921         }
2922
2923         wl_list_init (&window->window_output_list);
2924
2925         return window;
2926 }
2927
2928 struct window *
2929 window_create(struct display *display)
2930 {
2931         struct window *window;
2932
2933         window = window_create_internal(display, NULL);
2934         if (!window)
2935                 return NULL;
2936
2937         return window;
2938 }
2939
2940 struct window *
2941 window_create_transient(struct display *display, struct window *parent,
2942                         int32_t x, int32_t y, uint32_t flags)
2943 {
2944         struct window *window;
2945
2946         window = window_create_internal(parent->display, parent);
2947         if (!window)
2948                 return NULL;
2949
2950         window->type = TYPE_TRANSIENT;
2951         window->x = x;
2952         window->y = y;
2953
2954         if (display->shell)
2955                 wl_shell_surface_set_transient(window->shell_surface,
2956                                                window->parent->shell_surface,
2957                                                window->x, window->y, flags);
2958
2959         return window;
2960 }
2961
2962 static void
2963 menu_set_item(struct menu *menu, int sy)
2964 {
2965         int next;
2966
2967         next = (sy - 8) / 20;
2968         if (menu->current != next) {
2969                 menu->current = next;
2970                 widget_schedule_redraw(menu->widget);
2971         }
2972 }
2973
2974 static int
2975 menu_motion_handler(struct widget *widget,
2976                     struct input *input, uint32_t time,
2977                     float x, float y, void *data)
2978 {
2979         struct menu *menu = data;
2980
2981         if (widget == menu->widget)
2982                 menu_set_item(data, y);
2983
2984         return CURSOR_LEFT_PTR;
2985 }
2986
2987 static int
2988 menu_enter_handler(struct widget *widget,
2989                    struct input *input, float x, float y, void *data)
2990 {
2991         struct menu *menu = data;
2992
2993         if (widget == menu->widget)
2994                 menu_set_item(data, y);
2995
2996         return CURSOR_LEFT_PTR;
2997 }
2998
2999 static void
3000 menu_leave_handler(struct widget *widget, struct input *input, void *data)
3001 {
3002         struct menu *menu = data;
3003
3004         if (widget == menu->widget)
3005                 menu_set_item(data, -200);
3006 }
3007
3008 static void
3009 menu_button_handler(struct widget *widget,
3010                     struct input *input, uint32_t time,
3011                     uint32_t button, enum wl_pointer_button_state state,
3012                     void *data)
3013
3014 {
3015         struct menu *menu = data;
3016
3017         if (state == WL_POINTER_BUTTON_STATE_PRESSED &&
3018             time - menu->time > 500) {
3019                 /* Either relase after press-drag-release or
3020                  * click-motion-click. */
3021                 menu->func(menu->window->parent,
3022                            menu->current, menu->window->parent->user_data);
3023                 input_ungrab(input);
3024                 menu_destroy(menu);
3025         }
3026 }
3027
3028 static void
3029 menu_redraw_handler(struct widget *widget, void *data)
3030 {
3031         cairo_t *cr;
3032         const int32_t r = 3, margin = 3;
3033         struct menu *menu = data;
3034         int32_t width, height, i;
3035         struct window *window = widget->window;
3036
3037         cr = cairo_create(window->cairo_surface);
3038         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
3039         cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
3040         cairo_paint(cr);
3041
3042         width = window->allocation.width;
3043         height = window->allocation.height;
3044         rounded_rect(cr, 0, 0, width, height, r);
3045
3046         cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
3047         cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8);
3048         cairo_fill(cr);
3049
3050         for (i = 0; i < menu->count; i++) {
3051                 if (i == menu->current) {
3052                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
3053                         cairo_rectangle(cr, margin, i * 20 + margin,
3054                                         width - 2 * margin, 20);
3055                         cairo_fill(cr);
3056                         cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
3057                         cairo_move_to(cr, 10, i * 20 + 16);
3058                         cairo_show_text(cr, menu->entries[i]);
3059                 } else {
3060                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
3061                         cairo_move_to(cr, 10, i * 20 + 16);
3062                         cairo_show_text(cr, menu->entries[i]);
3063                 }
3064         }
3065
3066         cairo_destroy(cr);
3067 }
3068
3069 void
3070 window_show_menu(struct display *display,
3071                  struct input *input, uint32_t time, struct window *parent,
3072                  int32_t x, int32_t y,
3073                  menu_func_t func, const char **entries, int count)
3074 {
3075         struct window *window;
3076         struct menu *menu;
3077         const int32_t margin = 3;
3078
3079         menu = malloc(sizeof *menu);
3080         if (!menu)
3081                 return;
3082
3083         window = window_create_internal(parent->display, parent);
3084         if (!window)
3085                 return;
3086
3087         menu->window = window;
3088         menu->widget = window_add_widget(menu->window, menu);
3089         menu->entries = entries;
3090         menu->count = count;
3091         menu->current = -1;
3092         menu->time = time;
3093         menu->func = func;
3094         menu->input = input;
3095         window->type = TYPE_MENU;
3096         window->x = x;
3097         window->y = y;
3098
3099         input_ungrab(input);
3100         wl_shell_surface_set_popup(window->shell_surface, input->seat,
3101                                    display_get_serial(window->display),
3102                                    window->parent->shell_surface,
3103                                    window->x, window->y, 0);
3104
3105         widget_set_redraw_handler(menu->widget, menu_redraw_handler);
3106         widget_set_enter_handler(menu->widget, menu_enter_handler);
3107         widget_set_leave_handler(menu->widget, menu_leave_handler);
3108         widget_set_motion_handler(menu->widget, menu_motion_handler);
3109         widget_set_button_handler(menu->widget, menu_button_handler);
3110
3111         input_grab(input, menu->widget, 0);
3112         window_schedule_resize(window, 200, count * 20 + margin * 2);
3113 }
3114
3115 void
3116 window_set_buffer_type(struct window *window, enum window_buffer_type type)
3117 {
3118         window->buffer_type = type;
3119 }
3120
3121
3122 static void
3123 display_handle_geometry(void *data,
3124                         struct wl_output *wl_output,
3125                         int x, int y,
3126                         int physical_width,
3127                         int physical_height,
3128                         int subpixel,
3129                         const char *make,
3130                         const char *model)
3131 {
3132         struct output *output = data;
3133
3134         output->allocation.x = x;
3135         output->allocation.y = y;
3136 }
3137
3138 static void
3139 display_handle_mode(void *data,
3140                     struct wl_output *wl_output,
3141                     uint32_t flags,
3142                     int width,
3143                     int height,
3144                     int refresh)
3145 {
3146         struct output *output = data;
3147         struct display *display = output->display;
3148
3149         if (flags & WL_OUTPUT_MODE_CURRENT) {
3150                 output->allocation.width = width;
3151                 output->allocation.height = height;
3152                 if (display->output_configure_handler)
3153                         (*display->output_configure_handler)(
3154                                                 output, display->user_data);
3155         }
3156 }
3157
3158 static const struct wl_output_listener output_listener = {
3159         display_handle_geometry,
3160         display_handle_mode
3161 };
3162
3163 static void
3164 display_add_output(struct display *d, uint32_t id)
3165 {
3166         struct output *output;
3167
3168         output = malloc(sizeof *output);
3169         if (output == NULL)
3170                 return;
3171
3172         memset(output, 0, sizeof *output);
3173         output->display = d;
3174         output->output =
3175                 wl_display_bind(d->display, id, &wl_output_interface);
3176         wl_list_insert(d->output_list.prev, &output->link);
3177
3178         wl_output_add_listener(output->output, &output_listener, output);
3179 }
3180
3181 static void
3182 output_destroy(struct output *output)
3183 {
3184         if (output->destroy_handler)
3185                 (*output->destroy_handler)(output, output->user_data);
3186
3187         wl_output_destroy(output->output);
3188         wl_list_remove(&output->link);
3189         free(output);
3190 }
3191
3192 void
3193 display_set_output_configure_handler(struct display *display,
3194                                      display_output_handler_t handler)
3195 {
3196         struct output *output;
3197
3198         display->output_configure_handler = handler;
3199         if (!handler)
3200                 return;
3201
3202         wl_list_for_each(output, &display->output_list, link)
3203                 (*display->output_configure_handler)(output,
3204                                                      display->user_data);
3205 }
3206
3207 void
3208 output_set_user_data(struct output *output, void *data)
3209 {
3210         output->user_data = data;
3211 }
3212
3213 void *
3214 output_get_user_data(struct output *output)
3215 {
3216         return output->user_data;
3217 }
3218
3219 void
3220 output_set_destroy_handler(struct output *output,
3221                            display_output_handler_t handler)
3222 {
3223         output->destroy_handler = handler;
3224         /* FIXME: implement this, once we have way to remove outputs */
3225 }
3226
3227 void
3228 output_get_allocation(struct output *output, struct rectangle *allocation)
3229 {
3230         *allocation = output->allocation;
3231 }
3232
3233 struct wl_output *
3234 output_get_wl_output(struct output *output)
3235 {
3236         return output->output;
3237 }
3238
3239 static void
3240 fini_xkb(struct input *input)
3241 {
3242         xkb_state_unref(input->xkb.state);
3243         xkb_map_unref(input->xkb.keymap);
3244 }
3245
3246 static void
3247 display_add_input(struct display *d, uint32_t id)
3248 {
3249         struct input *input;
3250
3251         input = malloc(sizeof *input);
3252         if (input == NULL)
3253                 return;
3254
3255         memset(input, 0, sizeof *input);
3256         input->display = d;
3257         input->seat = wl_display_bind(d->display, id, &wl_seat_interface);
3258         input->pointer_focus = NULL;
3259         input->keyboard_focus = NULL;
3260         wl_list_insert(d->input_list.prev, &input->link);
3261
3262         wl_seat_add_listener(input->seat, &seat_listener, input);
3263         wl_seat_set_user_data(input->seat, input);
3264
3265         input->data_device =
3266                 wl_data_device_manager_get_data_device(d->data_device_manager,
3267                                                        input->seat);
3268         wl_data_device_add_listener(input->data_device, &data_device_listener,
3269                                     input);
3270
3271         input->pointer_surface = wl_compositor_create_surface(d->compositor);
3272
3273         input->repeat_timer_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
3274         input->repeat_task.run = keyboard_repeat_func;
3275         display_watch_fd(d, input->repeat_timer_fd,
3276                          EPOLLIN, &input->repeat_task);
3277 }
3278
3279 static void
3280 input_destroy(struct input *input)
3281 {
3282         input_remove_keyboard_focus(input);
3283         input_remove_pointer_focus(input);
3284
3285         if (input->xkb.state)
3286                 xkb_state_unref(input->xkb.state);
3287         if (input->xkb.keymap)
3288                 xkb_map_unref(input->xkb.keymap);
3289
3290         if (input->drag_offer)
3291                 data_offer_destroy(input->drag_offer);
3292
3293         if (input->selection_offer)
3294                 data_offer_destroy(input->selection_offer);
3295
3296         wl_data_device_destroy(input->data_device);
3297         fini_xkb(input);
3298
3299         wl_surface_destroy(input->pointer_surface);
3300
3301         wl_list_remove(&input->link);
3302         wl_seat_destroy(input->seat);
3303         close(input->repeat_timer_fd);
3304         free(input);
3305 }
3306
3307 static void
3308 display_handle_global(struct wl_display *display, uint32_t id,
3309                       const char *interface, uint32_t version, void *data)
3310 {
3311         struct display *d = data;
3312
3313         if (strcmp(interface, "wl_compositor") == 0) {
3314                 d->compositor =
3315                         wl_display_bind(display, id, &wl_compositor_interface);
3316         } else if (strcmp(interface, "wl_output") == 0) {
3317                 display_add_output(d, id);
3318         } else if (strcmp(interface, "wl_seat") == 0) {
3319                 display_add_input(d, id);
3320         } else if (strcmp(interface, "wl_shell") == 0) {
3321                 d->shell = wl_display_bind(display, id, &wl_shell_interface);
3322         } else if (strcmp(interface, "wl_shm") == 0) {
3323                 d->shm = wl_display_bind(display, id, &wl_shm_interface);
3324         } else if (strcmp(interface, "wl_data_device_manager") == 0) {
3325                 d->data_device_manager =
3326                         wl_display_bind(display, id,
3327                                         &wl_data_device_manager_interface);
3328         } else if (strcmp(interface, "text_cursor_position") == 0) {
3329                 d->text_cursor_position =
3330                         wl_display_bind(display, id,
3331                                         &text_cursor_position_interface);
3332         }
3333 }
3334
3335 #ifdef HAVE_CAIRO_EGL
3336 static int
3337 init_egl(struct display *d)
3338 {
3339         EGLint major, minor;
3340         EGLint n;
3341
3342 #ifdef USE_CAIRO_GLESV2
3343 #  define GL_BIT EGL_OPENGL_ES2_BIT
3344 #else
3345 #  define GL_BIT EGL_OPENGL_BIT
3346 #endif
3347
3348         static const EGLint argb_cfg_attribs[] = {
3349                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT | EGL_PIXMAP_BIT,
3350                 EGL_RED_SIZE, 1,
3351                 EGL_GREEN_SIZE, 1,
3352                 EGL_BLUE_SIZE, 1,
3353                 EGL_ALPHA_SIZE, 1,
3354                 EGL_DEPTH_SIZE, 1,
3355                 EGL_RENDERABLE_TYPE, GL_BIT,
3356                 EGL_NONE
3357         };
3358
3359 #ifdef USE_CAIRO_GLESV2
3360         static const EGLint context_attribs[] = {
3361                 EGL_CONTEXT_CLIENT_VERSION, 2,
3362                 EGL_NONE
3363         };
3364         EGLint api = EGL_OPENGL_ES_API;
3365 #else
3366         EGLint *context_attribs = NULL;
3367         EGLint api = EGL_OPENGL_API;
3368 #endif
3369
3370         d->dpy = eglGetDisplay(d->display);
3371         if (!eglInitialize(d->dpy, &major, &minor)) {
3372                 fprintf(stderr, "failed to initialize display\n");
3373                 return -1;
3374         }
3375
3376         if (!eglBindAPI(api)) {
3377                 fprintf(stderr, "failed to bind api EGL_OPENGL_API\n");
3378                 return -1;
3379         }
3380
3381         if (!eglChooseConfig(d->dpy, argb_cfg_attribs,
3382                              &d->argb_config, 1, &n) || n != 1) {
3383                 fprintf(stderr, "failed to choose argb config\n");
3384                 return -1;
3385         }
3386
3387         d->argb_ctx = eglCreateContext(d->dpy, d->argb_config,
3388                                        EGL_NO_CONTEXT, context_attribs);
3389         if (d->argb_ctx == NULL) {
3390                 fprintf(stderr, "failed to create context\n");
3391                 return -1;
3392         }
3393
3394         if (!eglMakeCurrent(d->dpy, NULL, NULL, d->argb_ctx)) {
3395                 fprintf(stderr, "failed to make context current\n");
3396                 return -1;
3397         }
3398
3399 #ifdef HAVE_CAIRO_EGL
3400         d->argb_device = cairo_egl_device_create(d->dpy, d->argb_ctx);
3401         if (cairo_device_status(d->argb_device) != CAIRO_STATUS_SUCCESS) {
3402                 fprintf(stderr, "failed to get cairo egl argb device\n");
3403                 return -1;
3404         }
3405 #endif
3406
3407         return 0;
3408 }
3409
3410 static void
3411 fini_egl(struct display *display)
3412 {
3413 #ifdef HAVE_CAIRO_EGL
3414         cairo_device_destroy(display->argb_device);
3415 #endif
3416
3417         eglMakeCurrent(display->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE,
3418                        EGL_NO_CONTEXT);
3419
3420         eglTerminate(display->dpy);
3421         eglReleaseThread();
3422 }
3423 #endif
3424
3425 static int
3426 event_mask_update(uint32_t mask, void *data)
3427 {
3428         struct display *d = data;
3429
3430         d->mask = mask;
3431
3432         return 0;
3433 }
3434
3435 static void
3436 handle_display_data(struct task *task, uint32_t events)
3437 {
3438         struct display *display =
3439                 container_of(task, struct display, display_task);
3440
3441         wl_display_iterate(display->display, display->mask);
3442 }
3443
3444 struct display *
3445 display_create(int argc, char *argv[])
3446 {
3447         struct display *d;
3448
3449         argc = parse_options(xkb_options,
3450                              ARRAY_LENGTH(xkb_options), argc, argv);
3451
3452         d = malloc(sizeof *d);
3453         if (d == NULL)
3454                 return NULL;
3455
3456         memset(d, 0, sizeof *d);
3457
3458         d->display = wl_display_connect(NULL);
3459         if (d->display == NULL) {
3460                 fprintf(stderr, "failed to create display: %m\n");
3461                 return NULL;
3462         }
3463
3464         d->epoll_fd = os_epoll_create_cloexec();
3465         d->display_fd = wl_display_get_fd(d->display, event_mask_update, d);
3466         d->display_task.run = handle_display_data;
3467         display_watch_fd(d, d->display_fd, EPOLLIN, &d->display_task);
3468
3469         wl_list_init(&d->deferred_list);
3470         wl_list_init(&d->input_list);
3471         wl_list_init(&d->output_list);
3472
3473         d->xkb_context = xkb_context_new(0);
3474         if (d->xkb_context == NULL) {
3475                 fprintf(stderr, "Failed to create XKB context\n");
3476                 return NULL;
3477         }
3478
3479         /* Set up listener so we'll catch all events. */
3480         wl_display_add_global_listener(d->display,
3481                                        display_handle_global, d);
3482
3483         /* Process connection events. */
3484         wl_display_iterate(d->display, WL_DISPLAY_READABLE);
3485 #ifdef HAVE_CAIRO_EGL
3486         if (init_egl(d) < 0)
3487                 return NULL;
3488 #endif
3489
3490         d->image_target_texture_2d =
3491                 (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
3492         d->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
3493         d->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
3494
3495         create_cursors(d);
3496
3497         d->theme = theme_create();
3498
3499         wl_list_init(&d->window_list);
3500
3501         return d;
3502 }
3503
3504 static void
3505 display_destroy_outputs(struct display *display)
3506 {
3507         struct output *tmp;
3508         struct output *output;
3509
3510         wl_list_for_each_safe(output, tmp, &display->output_list, link)
3511                 output_destroy(output);
3512 }
3513
3514 static void
3515 display_destroy_inputs(struct display *display)
3516 {
3517         struct input *tmp;
3518         struct input *input;
3519
3520         wl_list_for_each_safe(input, tmp, &display->input_list, link)
3521                 input_destroy(input);
3522 }
3523
3524 void
3525 display_destroy(struct display *display)
3526 {
3527         if (!wl_list_empty(&display->window_list))
3528                 fprintf(stderr, "toytoolkit warning: windows exist.\n");
3529
3530         if (!wl_list_empty(&display->deferred_list))
3531                 fprintf(stderr, "toytoolkit warning: deferred tasks exist.\n");
3532
3533         display_destroy_outputs(display);
3534         display_destroy_inputs(display);
3535
3536         xkb_context_unref(display->xkb_context);
3537
3538         theme_destroy(display->theme);
3539         destroy_cursors(display);
3540
3541 #ifdef HAVE_CAIRO_EGL
3542         fini_egl(display);
3543 #endif
3544
3545         if (display->shell)
3546                 wl_shell_destroy(display->shell);
3547
3548         if (display->shm)
3549                 wl_shm_destroy(display->shm);
3550
3551         if (display->data_device_manager)
3552                 wl_data_device_manager_destroy(display->data_device_manager);
3553
3554         wl_compositor_destroy(display->compositor);
3555
3556         close(display->epoll_fd);
3557
3558         wl_display_flush(display->display);
3559         wl_display_disconnect(display->display);
3560         free(display);
3561 }
3562
3563 void
3564 display_set_user_data(struct display *display, void *data)
3565 {
3566         display->user_data = data;
3567 }
3568
3569 void *
3570 display_get_user_data(struct display *display)
3571 {
3572         return display->user_data;
3573 }
3574
3575 struct wl_display *
3576 display_get_display(struct display *display)
3577 {
3578         return display->display;
3579 }
3580
3581 struct output *
3582 display_get_output(struct display *display)
3583 {
3584         return container_of(display->output_list.next, struct output, link);
3585 }
3586
3587 struct wl_compositor *
3588 display_get_compositor(struct display *display)
3589 {
3590         return display->compositor;
3591 }
3592
3593 uint32_t
3594 display_get_serial(struct display *display)
3595 {
3596         return display->serial;
3597 }
3598
3599 EGLDisplay
3600 display_get_egl_display(struct display *d)
3601 {
3602         return d->dpy;
3603 }
3604
3605 struct wl_data_source *
3606 display_create_data_source(struct display *display)
3607 {
3608         return wl_data_device_manager_create_data_source(display->data_device_manager);
3609 }
3610
3611 EGLConfig
3612 display_get_argb_egl_config(struct display *d)
3613 {
3614         return d->argb_config;
3615 }
3616
3617 struct wl_shell *
3618 display_get_shell(struct display *display)
3619 {
3620         return display->shell;
3621 }
3622
3623 int
3624 display_acquire_window_surface(struct display *display,
3625                                struct window *window,
3626                                EGLContext ctx)
3627 {
3628 #ifdef HAVE_CAIRO_EGL
3629         struct egl_window_surface_data *data;
3630         cairo_device_t *device;
3631
3632         if (!window->cairo_surface)
3633                 return -1;
3634         device = cairo_surface_get_device(window->cairo_surface);
3635         if (!device)
3636                 return -1;
3637
3638         if (!ctx) {
3639                 if (device == display->argb_device)
3640                         ctx = display->argb_ctx;
3641                 else
3642                         assert(0);
3643         }
3644
3645         data = cairo_surface_get_user_data(window->cairo_surface,
3646                                            &surface_data_key);
3647
3648         cairo_device_flush(device);
3649         cairo_device_acquire(device);
3650         if (!eglMakeCurrent(display->dpy, data->surf, data->surf, ctx))
3651                 fprintf(stderr, "failed to make surface current\n");
3652
3653         return 0;
3654 #else
3655         return -1;
3656 #endif
3657 }
3658
3659 void
3660 display_release_window_surface(struct display *display,
3661                                struct window *window)
3662 {
3663 #ifdef HAVE_CAIRO_EGL
3664         cairo_device_t *device;
3665
3666         device = cairo_surface_get_device(window->cairo_surface);
3667         if (!device)
3668                 return;
3669
3670         if (!eglMakeCurrent(display->dpy, NULL, NULL, display->argb_ctx))
3671                 fprintf(stderr, "failed to make context current\n");
3672         cairo_device_release(device);
3673 #endif
3674 }
3675
3676 void
3677 display_defer(struct display *display, struct task *task)
3678 {
3679         wl_list_insert(&display->deferred_list, &task->link);
3680 }
3681
3682 void
3683 display_watch_fd(struct display *display,
3684                  int fd, uint32_t events, struct task *task)
3685 {
3686         struct epoll_event ep;
3687
3688         ep.events = events;
3689         ep.data.ptr = task;
3690         epoll_ctl(display->epoll_fd, EPOLL_CTL_ADD, fd, &ep);
3691 }
3692
3693 void
3694 display_run(struct display *display)
3695 {
3696         struct task *task;
3697         struct epoll_event ep[16];
3698         int i, count;
3699
3700         display->running = 1;
3701         while (1) {
3702                 wl_display_flush(display->display);
3703
3704                 while (!wl_list_empty(&display->deferred_list)) {
3705                         task = container_of(display->deferred_list.next,
3706                                             struct task, link);
3707                         wl_list_remove(&task->link);
3708                         task->run(task, 0);
3709                 }
3710
3711                 if (!display->running)
3712                         break;
3713
3714                 wl_display_flush(display->display);
3715
3716                 count = epoll_wait(display->epoll_fd,
3717                                    ep, ARRAY_LENGTH(ep), -1);
3718                 for (i = 0; i < count; i++) {
3719                         task = ep[i].data.ptr;
3720                         task->run(task, ep[i].events);
3721                 }
3722         }
3723 }
3724
3725 void
3726 display_exit(struct display *display)
3727 {
3728         display->running = 0;
3729 }