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         uint32_t cursor_serial;
 198         float sx, sy;
 199         struct wl_list link;
 200
 201         struct widget *focus_widget;
 202         struct widget *grab;
 203         uint32_t grab_button;
 204
 205         struct wl_data_device *data_device;
 206         struct data_offer *drag_offer;
 207         struct data_offer *selection_offer;
 208
 209         struct {
 210                 struct xkb_keymap *keymap;
 211                 struct xkb_state *state;
 212                 xkb_mod_mask_t control_mask;
 213                 xkb_mod_mask_t alt_mask;
 214                 xkb_mod_mask_t shift_mask;
 215         } xkb;
 216
 217         struct task repeat_task;
 218         int repeat_timer_fd;
 219         uint32_t repeat_sym;
 220         uint32_t repeat_key;
 221         uint32_t repeat_time;
 222 };
 223
 224 struct output {
 225         struct display *display;
 226         struct wl_output *output;
 227         struct rectangle allocation;
 228         struct wl_list link;
 229
 230         display_output_handler_t destroy_handler;
 231         void *user_data;
 232 };
 233
 234 enum frame_button_action {
 235         FRAME_BUTTON_NULL = 0,
 236         FRAME_BUTTON_ICON = 1,
 237         FRAME_BUTTON_CLOSE = 2,
 238         FRAME_BUTTON_MINIMIZE = 3,
 239         FRAME_BUTTON_MAXIMIZE = 4,
 240 };
 241
 242 enum frame_button_pointer {
 243         FRAME_BUTTON_DEFAULT = 0,
 244         FRAME_BUTTON_OVER = 1,
 245         FRAME_BUTTON_ACTIVE = 2,
 246 };
 247
 248 enum frame_button_align {
 249         FRAME_BUTTON_RIGHT = 0,
 250         FRAME_BUTTON_LEFT = 1,
 251 };
 252
 253 enum frame_button_decoration {
 254         FRAME_BUTTON_NONE = 0,
 255         FRAME_BUTTON_FANCY = 1,
 256 };
 257
 258 struct frame_button {
 259         struct widget *widget;
 260         struct frame *frame;
 261         cairo_surface_t *icon;
 262         enum frame_button_action type;
 263         enum frame_button_pointer state;
 264         struct wl_list link;    /* buttons_list */
 265         enum frame_button_align align;
 266         enum frame_button_decoration decoration;
 267 };
 268
 269 struct frame {
 270         struct widget *widget;
 271         struct widget *child;
 272         struct wl_list buttons_list;
 273 };
 274
 275 struct menu {
 276         struct window *window;
 277         struct widget *widget;
 278         struct input *input;
 279         const char **entries;
 280         uint32_t time;
 281         int current;
 282         int count;
 283         menu_func_t func;
 284 };
 285
 286 struct tooltip {
 287         struct widget *parent;
 288         struct window *window;
 289         struct widget *widget;
 290         char *entry;
 291         struct task tooltip_task;
 292         int tooltip_fd;
 293         float x, y;
 294 };
 295
 296 struct shm_pool {
 297         struct wl_shm_pool *pool;
 298         size_t size;
 299         size_t used;
 300         void *data;
 301 };
 302
 303 enum {
 304         CURSOR_DEFAULT = 100,
 305         CURSOR_UNSET
 306 };
 307
 308 enum window_location {
 309         WINDOW_INTERIOR = 0,
 310         WINDOW_RESIZING_TOP = 1,
 311         WINDOW_RESIZING_BOTTOM = 2,
 312         WINDOW_RESIZING_LEFT = 4,
 313         WINDOW_RESIZING_TOP_LEFT = 5,
 314         WINDOW_RESIZING_BOTTOM_LEFT = 6,
 315         WINDOW_RESIZING_RIGHT = 8,
 316         WINDOW_RESIZING_TOP_RIGHT = 9,
 317         WINDOW_RESIZING_BOTTOM_RIGHT = 10,
 318         WINDOW_RESIZING_MASK = 15,
 319         WINDOW_EXTERIOR = 16,
 320         WINDOW_TITLEBAR = 17,
 321         WINDOW_CLIENT_AREA = 18,
 322 };
 323
 324 const char *option_xkb_layout = "us";
 325 const char *option_xkb_variant = "";
 326 const char *option_xkb_options = "";
 327
 328 static const struct weston_option xkb_options[] = {
 329         { WESTON_OPTION_STRING, "xkb-layout", 0, &option_xkb_layout },
 330         { WESTON_OPTION_STRING, "xkb-variant", 0, &option_xkb_variant },
 331         { WESTON_OPTION_STRING, "xkb-options", 0, &option_xkb_options },
 332 };
 333
 334 static const cairo_user_data_key_t surface_data_key;
 335 struct surface_data {
 336         struct wl_buffer *buffer;
 337 };
 338
 339 #define MULT(_d,c,a,t) \
 340         do { t = c * a + 0x7f; _d = ((t >> 8) + t) >> 8; } while (0)
 341
 342 #ifdef HAVE_CAIRO_EGL
 343
 344 struct egl_window_surface_data {
 345         struct display *display;
 346         struct wl_surface *surface;
 347         struct wl_egl_window *window;
 348         EGLSurface surf;
 349 };
 350
 351 static void
 352 egl_window_surface_data_destroy(void *p)
 353 {
 354         struct egl_window_surface_data *data = p;
 355         struct display *d = data->display;
 356
 357         eglDestroySurface(d->dpy, data->surf);
 358         wl_egl_window_destroy(data->window);
 359         data->surface = NULL;
 360
 361         free(p);
 362 }
 363
 364 static cairo_surface_t *
 365 display_create_egl_window_surface(struct display *display,
 366                                   struct wl_surface *surface,
 367                                   uint32_t flags,
 368                                   struct rectangle *rectangle)
 369 {
 370         cairo_surface_t *cairo_surface;
 371         struct egl_window_surface_data *data;
 372         EGLConfig config;
 373         cairo_device_t *device;
 374
 375         data = malloc(sizeof *data);
 376         if (data == NULL)
 377                 return NULL;
 378
 379         data->display = display;
 380         data->surface = surface;
 381
 382         config = display->argb_config;
 383         device = display->argb_device;
 384
 385         data->window = wl_egl_window_create(surface,
 386                                             rectangle->width,
 387                                             rectangle->height);
 388
 389         data->surf = eglCreateWindowSurface(display->dpy, config,
 390                                             data->window, NULL);
 391
 392         cairo_surface = cairo_gl_surface_create_for_egl(device,
 393                                                         data->surf,
 394                                                         rectangle->width,
 395                                                         rectangle->height);
 396
 397         cairo_surface_set_user_data(cairo_surface, &surface_data_key,
 398                                     data, egl_window_surface_data_destroy);
 399
 400         return cairo_surface;
 401 }
 402
 403 #endif
 404
 405 struct wl_buffer *
 406 display_get_buffer_for_surface(struct display *display,
 407                                cairo_surface_t *surface)
 408 {
 409         struct surface_data *data;
 410
 411         data = cairo_surface_get_user_data (surface, &surface_data_key);
 412
 413         return data->buffer;
 414 }
 415
 416 struct shm_surface_data {
 417         struct surface_data data;
 418         struct shm_pool *pool;
 419 };
 420
 421 static void
 422 shm_pool_destroy(struct shm_pool *pool);
 423
 424 static void
 425 shm_surface_data_destroy(void *p)
 426 {
 427         struct shm_surface_data *data = p;
 428
 429         wl_buffer_destroy(data->data.buffer);
 430         if (data->pool)
 431                 shm_pool_destroy(data->pool);
 432
 433         free(data);
 434 }
 435
 436 static struct wl_shm_pool *
 437 make_shm_pool(struct display *display, int size, void **data)
 438 {
 439         struct wl_shm_pool *pool;
 440         int fd;
 441
 442         fd = os_create_anonymous_file(size);
 443         if (fd < 0) {
 444                 fprintf(stderr, "creating a buffer file for %d B failed: %m\n",
 445                         size);
 446                 return NULL;
 447         }
 448
 449         *data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 450         if (*data == MAP_FAILED) {
 451                 fprintf(stderr, "mmap failed: %m\n");
 452                 close(fd);
 453                 return NULL;
 454         }
 455
 456         pool = wl_shm_create_pool(display->shm, fd, size);
 457
 458         close(fd);
 459
 460         return pool;
 461 }
 462
 463 static struct shm_pool *
 464 shm_pool_create(struct display *display, size_t size)
 465 {
 466         struct shm_pool *pool = malloc(sizeof *pool);
 467
 468         if (!pool)
 469                 return NULL;
 470
 471         pool->pool = make_shm_pool(display, size, &pool->data);
 472         if (!pool->pool) {
 473                 free(pool);
 474                 return NULL;
 475         }
 476
 477         pool->size = size;
 478         pool->used = 0;
 479
 480         return pool;
 481 }
 482
 483 static void *
 484 shm_pool_allocate(struct shm_pool *pool, size_t size, int *offset)
 485 {
 486         if (pool->used + size > pool->size)
 487                 return NULL;
 488
 489         *offset = pool->used;
 490         pool->used += size;
 491
 492         return (char *) pool->data + *offset;
 493 }
 494
 495 /* destroy the pool. this does not unmap the memory though */
 496 static void
 497 shm_pool_destroy(struct shm_pool *pool)
 498 {
 499         munmap(pool->data, pool->size);
 500         wl_shm_pool_destroy(pool->pool);
 501         free(pool);
 502 }
 503
 504 /* Start allocating from the beginning of the pool again */
 505 static void
 506 shm_pool_reset(struct shm_pool *pool)
 507 {
 508         pool->used = 0;
 509 }
 510
 511 static int
 512 data_length_for_shm_surface(struct rectangle *rect)
 513 {
 514         int stride;
 515
 516         stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32,
 517                                                 rect->width);
 518         return stride * rect->height;
 519 }
 520
 521 static cairo_surface_t *
 522 display_create_shm_surface_from_pool(struct display *display,
 523                                      struct rectangle *rectangle,
 524                                      uint32_t flags, struct shm_pool *pool)
 525 {
 526         struct shm_surface_data *data;
 527         uint32_t format;
 528         cairo_surface_t *surface;
 529         int stride, length, offset;
 530         void *map;
 531
 532         data = malloc(sizeof *data);
 533         if (data == NULL)
 534                 return NULL;
 535
 536         stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32,
 537                                                 rectangle->width);
 538         length = stride * rectangle->height;
 539         data->pool = NULL;
 540         map = shm_pool_allocate(pool, length, &offset);
 541
 542         if (!map) {
 543                 free(data);
 544                 return NULL;
 545         }
 546
 547         surface = cairo_image_surface_create_for_data (map,
 548                                                        CAIRO_FORMAT_ARGB32,
 549                                                        rectangle->width,
 550                                                        rectangle->height,
 551                                                        stride);
 552
 553         cairo_surface_set_user_data (surface, &surface_data_key,
 554                                      data, shm_surface_data_destroy);
 555
 556         if (flags & SURFACE_OPAQUE)
 557                 format = WL_SHM_FORMAT_XRGB8888;
 558         else
 559                 format = WL_SHM_FORMAT_ARGB8888;
 560
 561         data->data.buffer = wl_shm_pool_create_buffer(pool->pool, offset,
 562                                                       rectangle->width,
 563                                                       rectangle->height,
 564                                                       stride, format);
 565
 566         return surface;
 567 }
 568
 569 static cairo_surface_t *
 570 display_create_shm_surface(struct display *display,
 571                            struct rectangle *rectangle, uint32_t flags,
 572                            struct window *window)
 573 {
 574         struct shm_surface_data *data;
 575         struct shm_pool *pool;
 576         cairo_surface_t *surface;
 577
 578         if (window && window->pool) {
 579                 shm_pool_reset(window->pool);
 580                 surface = display_create_shm_surface_from_pool(display,
 581                                                                rectangle,
 582                                                                flags,
 583                                                                window->pool);
 584                 if (surface)
 585                         return surface;
 586         }
 587
 588         pool = shm_pool_create(display,
 589                                data_length_for_shm_surface(rectangle));
 590         if (!pool)
 591                 return NULL;
 592
 593         surface =
 594                 display_create_shm_surface_from_pool(display, rectangle,
 595                                                      flags, pool);
 596
 597         if (!surface) {
 598                 shm_pool_destroy(pool);
 599                 return NULL;
 600         }
 601
 602         /* make sure we destroy the pool when the surface is destroyed */
 603         data = cairo_surface_get_user_data(surface, &surface_data_key);
 604         data->pool = pool;
 605
 606         return surface;
 607 }
 608
 609 static int
 610 check_size(struct rectangle *rect)
 611 {
 612         if (rect->width && rect->height)
 613                 return 0;
 614
 615         fprintf(stderr, "tried to create surface of "
 616                 "width: %d, height: %d\n", rect->width, rect->height);
 617         return -1;
 618 }
 619
 620 cairo_surface_t *
 621 display_create_surface(struct display *display,
 622                        struct wl_surface *surface,
 623                        struct rectangle *rectangle,
 624                        uint32_t flags)
 625 {
 626         if (check_size(rectangle) < 0)
 627                 return NULL;
 628 #ifdef HAVE_CAIRO_EGL
 629         if (display->dpy && !(flags & SURFACE_SHM))
 630                 return display_create_egl_window_surface(display,
 631                                                          surface,
 632                                                          flags,
 633                                                          rectangle);
 634 #endif
 635         return display_create_shm_surface(display, rectangle, flags, NULL);
 636 }
 637
 638 static const char *cursors[] = {
 639         "bottom_left_corner",
 640         "bottom_right_corner",
 641         "bottom_side",
 642         "grabbing",
 643         "left_ptr",
 644         "left_side",
 645         "right_side",
 646         "top_left_corner",
 647         "top_right_corner",
 648         "top_side",
 649         "xterm",
 650         "hand1",
 651         "watch",
 652 };
 653
 654 static void
 655 create_cursors(struct display *display)
 656 {
 657         unsigned int i;
 658
 659         display->cursor_theme = wl_cursor_theme_load(NULL, 32, display->shm);
 660         display->cursors =
 661                 malloc(ARRAY_LENGTH(cursors) * sizeof display->cursors[0]);
 662
 663         for (i = 0; i < ARRAY_LENGTH(cursors); i++)
 664                 display->cursors[i] =
 665                         wl_cursor_theme_get_cursor(display->cursor_theme,
 666                                                    cursors[i]);
 667 }
 668
 669 static void
 670 destroy_cursors(struct display *display)
 671 {
 672         wl_cursor_theme_destroy(display->cursor_theme);
 673         free(display->cursors);
 674 }
 675
 676 struct wl_cursor_image *
 677 display_get_pointer_image(struct display *display, int pointer)
 678 {
 679         struct wl_cursor *cursor =
 680                 wl_cursor_theme_get_cursor(display->cursor_theme,
 681                                            cursors[pointer]);
 682
 683         return cursor ? cursor->images[0] : NULL;
 684 }
 685
 686 static void
 687 window_get_resize_dx_dy(struct window *window, int *x, int *y)
 688 {
 689         if (window->resize_edges & WINDOW_RESIZING_LEFT)
 690                 *x = window->server_allocation.width - window->allocation.width;
 691         else
 692                 *x = 0;
 693
 694         if (window->resize_edges & WINDOW_RESIZING_TOP)
 695                 *y = window->server_allocation.height -
 696                         window->allocation.height;
 697         else
 698                 *y = 0;
 699
 700         window->resize_edges = 0;
 701 }
 702
 703 static void
 704 window_attach_surface(struct window *window)
 705 {
 706         struct display *display = window->display;
 707         struct wl_buffer *buffer;
 708 #ifdef HAVE_CAIRO_EGL
 709         struct egl_window_surface_data *data;
 710 #endif
 711         int32_t x, y;
 712
 713         if (window->type == TYPE_NONE) {
 714                 window->type = TYPE_TOPLEVEL;
 715                 if (display->shell)
 716                         wl_shell_surface_set_toplevel(window->shell_surface);
 717         }
 718
 719         switch (window->buffer_type) {
 720 #ifdef HAVE_CAIRO_EGL
 721         case WINDOW_BUFFER_TYPE_EGL_WINDOW:
 722                 data = cairo_surface_get_user_data(window->cairo_surface,
 723                                                    &surface_data_key);
 724
 725                 cairo_gl_surface_swapbuffers(window->cairo_surface);
 726                 wl_egl_window_get_attached_size(data->window,
 727                                 &window->server_allocation.width,
 728                                 &window->server_allocation.height);
 729                 break;
 730 #endif
 731         case WINDOW_BUFFER_TYPE_SHM:
 732                 buffer =
 733                         display_get_buffer_for_surface(display,
 734                                                        window->cairo_surface);
 735
 736                 window_get_resize_dx_dy(window, &x, &y);
 737                 wl_surface_attach(window->surface, buffer, x, y);
 738                 wl_surface_damage(window->surface, 0, 0,
 739                                   window->allocation.width,
 740                                   window->allocation.height);
 741                 window->server_allocation = window->allocation;
 742                 cairo_surface_destroy(window->cairo_surface);
 743                 window->cairo_surface = NULL;
 744                 break;
 745         default:
 746                 return;
 747         }
 748
 749         if (window->input_region) {
 750                 wl_surface_set_input_region(window->surface,
 751                                             window->input_region);
 752                 wl_region_destroy(window->input_region);
 753                 window->input_region = NULL;
 754         }
 755
 756         if (window->opaque_region) {
 757                 wl_surface_set_opaque_region(window->surface,
 758                                              window->opaque_region);
 759                 wl_region_destroy(window->opaque_region);
 760                 window->opaque_region = NULL;
 761         }
 762 }
 763
 764 void
 765 window_flush(struct window *window)
 766 {
 767         if (window->cairo_surface)
 768                 window_attach_surface(window);
 769 }
 770
 771 void
 772 window_set_surface(struct window *window, cairo_surface_t *surface)
 773 {
 774         cairo_surface_reference(surface);
 775
 776         if (window->cairo_surface != NULL)
 777                 cairo_surface_destroy(window->cairo_surface);
 778
 779         window->cairo_surface = surface;
 780 }
 781
 782 #ifdef HAVE_CAIRO_EGL
 783 static void
 784 window_resize_cairo_window_surface(struct window *window)
 785 {
 786         struct egl_window_surface_data *data;
 787         int x, y;
 788
 789         data = cairo_surface_get_user_data(window->cairo_surface,
 790                                            &surface_data_key);
 791
 792         window_get_resize_dx_dy(window, &x, &y),
 793         wl_egl_window_resize(data->window,
 794                              window->allocation.width,
 795                              window->allocation.height,
 796                              x,y);
 797
 798         cairo_gl_surface_set_size(window->cairo_surface,
 799                                   window->allocation.width,
 800                                   window->allocation.height);
 801 }
 802 #endif
 803
 804 struct display *
 805 window_get_display(struct window *window)
 806 {
 807         return window->display;
 808 }
 809
 810 void
 811 window_create_surface(struct window *window)
 812 {
 813         cairo_surface_t *surface;
 814         uint32_t flags = 0;
 815
 816         if (!window->transparent)
 817                 flags = SURFACE_OPAQUE;
 818
 819         switch (window->buffer_type) {
 820 #ifdef HAVE_CAIRO_EGL
 821         case WINDOW_BUFFER_TYPE_EGL_WINDOW:
 822                 if (window->cairo_surface) {
 823                         window_resize_cairo_window_surface(window);
 824                         return;
 825                 }
 826                 surface = display_create_surface(window->display,
 827                                                  window->surface,
 828                                                  &window->allocation, flags);
 829                 break;
 830 #endif
 831         case WINDOW_BUFFER_TYPE_SHM:
 832                 surface = display_create_shm_surface(window->display,
 833                                                      &window->allocation,
 834                                                      flags, window);
 835                 break;
 836         default:
 837                 surface = NULL;
 838                 break;
 839         }
 840
 841         window_set_surface(window, surface);
 842         cairo_surface_destroy(surface);
 843 }
 844
 845 static void frame_destroy(struct frame *frame);
 846
 847 void
 848 window_destroy(struct window *window)
 849 {
 850         struct display *display = window->display;
 851         struct input *input;
 852         struct window_output *window_output;
 853         struct window_output *window_output_tmp;
 854
 855         if (window->redraw_scheduled)
 856                 wl_list_remove(&window->redraw_task.link);
 857
 858         wl_list_for_each(input, &display->input_list, link) {
 859                 if (input->pointer_focus == window)
 860                         input->pointer_focus = NULL;
 861                 if (input->keyboard_focus == window)
 862                         input->keyboard_focus = NULL;
 863                 if (input->focus_widget &&
 864                     input->focus_widget->window == window)
 865                         input->focus_widget = NULL;
 866         }
 867
 868         wl_list_for_each_safe(window_output, window_output_tmp,
 869                               &window->window_output_list, link) {
 870                 free (window_output);
 871         }
 872
 873         if (window->input_region)
 874                 wl_region_destroy(window->input_region);
 875         if (window->opaque_region)
 876                 wl_region_destroy(window->opaque_region);
 877
 878         if (window->frame)
 879                 frame_destroy(window->frame);
 880
 881         if (window->shell_surface)
 882                 wl_shell_surface_destroy(window->shell_surface);
 883         wl_surface_destroy(window->surface);
 884         wl_list_remove(&window->link);
 885
 886         if (window->cairo_surface != NULL)
 887                 cairo_surface_destroy(window->cairo_surface);
 888
 889         free(window->title);
 890         free(window);
 891 }
 892
 893 static struct widget *
 894 widget_find_widget(struct widget *widget, int32_t x, int32_t y)
 895 {
 896         struct widget *child, *target;
 897
 898         wl_list_for_each(child, &widget->child_list, link) {
 899                 target = widget_find_widget(child, x, y);
 900                 if (target)
 901                         return target;
 902         }
 903
 904         if (widget->allocation.x <= x &&
 905             x < widget->allocation.x + widget->allocation.width &&
 906             widget->allocation.y <= y &&
 907             y < widget->allocation.y + widget->allocation.height) {
 908                 return widget;
 909         }
 910
 911         return NULL;
 912 }
 913
 914 static struct widget *
 915 widget_create(struct window *window, void *data)
 916 {
 917         struct widget *widget;
 918
 919         widget = malloc(sizeof *widget);
 920         memset(widget, 0, sizeof *widget);
 921         widget->window = window;
 922         widget->user_data = data;
 923         widget->allocation = window->allocation;
 924         wl_list_init(&widget->child_list);
 925         widget->opaque = 0;
 926         widget->tooltip = NULL;
 927         widget->tooltip_count = 0;
 928
 929         return widget;
 930 }
 931
 932 struct widget *
 933 window_add_widget(struct window *window, void *data)
 934 {
 935         window->widget = widget_create(window, data);
 936         wl_list_init(&window->widget->link);
 937
 938         return window->widget;
 939 }
 940
 941 struct widget *
 942 widget_add_widget(struct widget *parent, void *data)
 943 {
 944         struct widget *widget;
 945
 946         widget = widget_create(parent->window, data);
 947         wl_list_insert(parent->child_list.prev, &widget->link);
 948
 949         return widget;
 950 }
 951
 952 void
 953 widget_destroy(struct widget *widget)
 954 {
 955         struct display *display = widget->window->display;
 956         struct input *input;
 957
 958         if (widget->tooltip) {
 959                 free(widget->tooltip);
 960                 widget->tooltip = NULL;
 961         }
 962
 963         wl_list_for_each(input, &display->input_list, link) {
 964                 if (input->focus_widget == widget)
 965                         input->focus_widget = NULL;
 966         }
 967
 968         wl_list_remove(&widget->link);
 969         free(widget);
 970 }
 971
 972 void
 973 widget_get_allocation(struct widget *widget, struct rectangle *allocation)
 974 {
 975         *allocation = widget->allocation;
 976 }
 977
 978 void
 979 widget_set_size(struct widget *widget, int32_t width, int32_t height)
 980 {
 981         widget->allocation.width = width;
 982         widget->allocation.height = height;
 983 }
 984
 985 void
 986 widget_set_allocation(struct widget *widget,
 987                       int32_t x, int32_t y, int32_t width, int32_t height)
 988 {
 989         widget->allocation.x = x;
 990         widget->allocation.y = y;
 991         widget_set_size(widget, width, height);
 992 }
 993
 994 void
 995 widget_set_transparent(struct widget *widget, int transparent)
 996 {
 997         widget->opaque = !transparent;
 998 }
 999
1000 void *
1001 widget_get_user_data(struct widget *widget)
1002 {
1003         return widget->user_data;
1004 }
1005
1006 void
1007 widget_set_resize_handler(struct widget *widget,
1008                           widget_resize_handler_t handler)
1009 {
1010         widget->resize_handler = handler;
1011 }
1012
1013 void
1014 widget_set_redraw_handler(struct widget *widget,
1015                           widget_redraw_handler_t handler)
1016 {
1017         widget->redraw_handler = handler;
1018 }
1019
1020 void
1021 widget_set_enter_handler(struct widget *widget, widget_enter_handler_t handler)
1022 {
1023         widget->enter_handler = handler;
1024 }
1025
1026 void
1027 widget_set_leave_handler(struct widget *widget, widget_leave_handler_t handler)
1028 {
1029         widget->leave_handler = handler;
1030 }
1031
1032 void
1033 widget_set_motion_handler(struct widget *widget,
1034                           widget_motion_handler_t handler)
1035 {
1036         widget->motion_handler = handler;
1037 }
1038
1039 void
1040 widget_set_button_handler(struct widget *widget,
1041                           widget_button_handler_t handler)
1042 {
1043         widget->button_handler = handler;
1044 }
1045
1046 void
1047 widget_schedule_redraw(struct widget *widget)
1048 {
1049         window_schedule_redraw(widget->window);
1050 }
1051
1052 cairo_surface_t *
1053 window_get_surface(struct window *window)
1054 {
1055         return cairo_surface_reference(window->cairo_surface);
1056 }
1057
1058 struct wl_surface *
1059 window_get_wl_surface(struct window *window)
1060 {
1061         return window->surface;
1062 }
1063
1064 struct wl_shell_surface *
1065 window_get_wl_shell_surface(struct window *window)
1066 {
1067         return window->shell_surface;
1068 }
1069
1070 static void
1071 tooltip_redraw_handler(struct widget *widget, void *data)
1072 {
1073         cairo_t *cr;
1074         const int32_t r = 3;
1075         struct tooltip *tooltip = data;
1076         int32_t width, height;
1077         struct window *window = widget->window;
1078
1079         cr = cairo_create(window->cairo_surface);
1080         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1081         cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1082         cairo_paint(cr);
1083
1084         width = window->allocation.width;
1085         height = window->allocation.height;
1086         rounded_rect(cr, 0, 0, width, height, r);
1087
1088         cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1089         cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8);
1090         cairo_fill(cr);
1091
1092         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1093         cairo_move_to(cr, 10, 16);
1094         cairo_show_text(cr, tooltip->entry);
1095         cairo_destroy(cr);
1096 }
1097
1098 static cairo_text_extents_t
1099 get_text_extents(struct tooltip *tooltip)
1100 {
1101         struct window *window;
1102         cairo_t *cr;
1103         cairo_text_extents_t extents;
1104
1105         /* we borrow cairo_surface from the parent cause tooltip's wasn't
1106          * created yet */
1107         window = tooltip->widget->window->parent;
1108         cr = cairo_create(window->cairo_surface);
1109         cairo_text_extents(cr, tooltip->entry, &extents);
1110         cairo_destroy(cr);
1111
1112         return extents;
1113 }
1114
1115 static int
1116 window_create_tooltip(struct tooltip *tooltip)
1117 {
1118         struct widget *parent = tooltip->parent;
1119         struct display *display = parent->window->display;
1120         struct window *window;
1121         const int offset_y = 27;
1122         const int margin = 3;
1123         cairo_text_extents_t extents;
1124
1125         if (tooltip->widget)
1126                 return 0;
1127
1128         window = window_create_transient(display, parent->window, tooltip->x,
1129                                          tooltip->y + offset_y,
1130                                          WL_SHELL_SURFACE_TRANSIENT_INACTIVE);
1131         if (!window)
1132                 return -1;
1133
1134         tooltip->window = window;
1135         tooltip->widget = window_add_widget(tooltip->window, tooltip);
1136
1137         extents = get_text_extents(tooltip);
1138         widget_set_redraw_handler(tooltip->widget, tooltip_redraw_handler);
1139         window_schedule_resize(window, extents.width + 20, 20 + margin * 2);
1140
1141         return 0;
1142 }
1143
1144 void
1145 widget_destroy_tooltip(struct widget *parent)
1146 {
1147         struct tooltip *tooltip = parent->tooltip;
1148
1149         parent->tooltip_count = 0;
1150         if (!tooltip)
1151                 return;
1152
1153         if (tooltip->widget) {
1154                 widget_destroy(tooltip->widget);
1155                 window_destroy(tooltip->window);
1156                 tooltip->widget = NULL;
1157                 tooltip->window = NULL;
1158         }
1159
1160         close(tooltip->tooltip_fd);
1161         free(tooltip->entry);
1162         free(tooltip);
1163         parent->tooltip = NULL;
1164 }
1165
1166 static void
1167 tooltip_func(struct task *task, uint32_t events)
1168 {
1169         struct tooltip *tooltip =
1170                 container_of(task, struct tooltip, tooltip_task);
1171         uint64_t exp;
1172
1173         if (read(tooltip->tooltip_fd, &exp, sizeof (uint64_t)) != sizeof (uint64_t))
1174                 abort();
1175         window_create_tooltip(tooltip);
1176 }
1177
1178 #define TOOLTIP_TIMEOUT 500
1179 static int
1180 tooltip_timer_reset(struct tooltip *tooltip)
1181 {
1182         struct itimerspec its;
1183
1184         its.it_interval.tv_sec = 0;
1185         its.it_interval.tv_nsec = 0;
1186         its.it_value.tv_sec = TOOLTIP_TIMEOUT / 1000;
1187         its.it_value.tv_nsec = (TOOLTIP_TIMEOUT % 1000) * 1000 * 1000;
1188         if (timerfd_settime(tooltip->tooltip_fd, 0, &its, NULL) < 0) {
1189                 fprintf(stderr, "could not set timerfd\n: %m");
1190                 return -1;
1191         }
1192
1193         return 0;
1194 }
1195
1196 int
1197 widget_set_tooltip(struct widget *parent, char *entry, float x, float y)
1198 {
1199         struct tooltip *tooltip = parent->tooltip;
1200
1201         parent->tooltip_count++;
1202         if (tooltip) {
1203                 tooltip->x = x;
1204                 tooltip->y = y;
1205                 tooltip_timer_reset(tooltip);
1206                 return 0;
1207         }
1208
1209         /* the handler might be triggered too fast via input device motion, so
1210          * we need this check here to make sure tooltip is fully initialized */
1211         if (parent->tooltip_count > 1)
1212                 return 0;
1213
1214         tooltip = malloc(sizeof *tooltip);
1215         if (!tooltip)
1216                 return -1;
1217
1218         parent->tooltip = tooltip;
1219         tooltip->parent = parent;
1220         tooltip->widget = NULL;
1221         tooltip->window = NULL;
1222         tooltip->x = x;
1223         tooltip->y = y;
1224         tooltip->entry = strdup(entry);
1225         tooltip->tooltip_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
1226         if (tooltip->tooltip_fd < 0) {
1227                 fprintf(stderr, "could not create timerfd\n: %m");
1228                 return -1;
1229         }
1230
1231         tooltip->tooltip_task.run = tooltip_func;
1232         display_watch_fd(parent->window->display, tooltip->tooltip_fd,
1233                          EPOLLIN, &tooltip->tooltip_task);
1234         tooltip_timer_reset(tooltip);
1235
1236         return 0;
1237 }
1238
1239 static void
1240 frame_resize_handler(struct widget *widget,
1241                      int32_t width, int32_t height, void *data)
1242 {
1243         struct frame *frame = data;
1244         struct widget *child = frame->child;
1245         struct rectangle allocation;
1246         struct display *display = widget->window->display;
1247         struct frame_button * button;
1248         struct theme *t = display->theme;
1249         int x_l, x_r, y, w, h;
1250         int decoration_width, decoration_height;
1251         int opaque_margin;
1252
1253         if (widget->window->type != TYPE_FULLSCREEN) {
1254                 decoration_width = (t->width + t->margin) * 2;
1255                 decoration_height = t->width +
1256                         t->titlebar_height + t->margin * 2;
1257
1258                 allocation.x = t->width + t->margin;
1259                 allocation.y = t->titlebar_height + t->margin;
1260                 allocation.width = width - decoration_width;
1261                 allocation.height = height - decoration_height;
1262
1263                 opaque_margin = t->margin + t->frame_radius;
1264
1265                 wl_list_for_each(button, &frame->buttons_list, link)
1266                         button->widget->opaque = 0;
1267         } else {
1268                 decoration_width = 0;
1269                 decoration_height = 0;
1270
1271                 allocation.x = 0;
1272                 allocation.y = 0;
1273                 allocation.width = width;
1274                 allocation.height = height;
1275                 opaque_margin = 0;
1276
1277                 wl_list_for_each(button, &frame->buttons_list, link)
1278                         button->widget->opaque = 1;
1279         }
1280
1281         widget_set_allocation(child, allocation.x, allocation.y,
1282                               allocation.width, allocation.height);
1283
1284         if (child->resize_handler)
1285                 child->resize_handler(child,
1286                                       allocation.width,
1287                                       allocation.height,
1288                                       child->user_data);
1289
1290         width = child->allocation.width + decoration_width;
1291         height = child->allocation.height + decoration_height;
1292
1293         widget->window->input_region =
1294                       wl_compositor_create_region(display->compositor);
1295         wl_region_add(widget->window->input_region,
1296                       t->margin, t->margin,
1297                       width - 2 * t->margin,
1298                       height - 2 * t->margin);
1299
1300         widget_set_allocation(widget, 0, 0, width, height);
1301
1302         if (child->opaque) {
1303                 widget->window->opaque_region =
1304                         wl_compositor_create_region(display->compositor);
1305                 wl_region_add(widget->window->opaque_region,
1306                               opaque_margin, opaque_margin,
1307                               widget->allocation.width - 2 * opaque_margin,
1308                               widget->allocation.height - 2 * opaque_margin);
1309         }
1310
1311         /* frame internal buttons */
1312         x_r = frame->widget->allocation.width - t->width - t->margin;
1313         x_l = t->width + t->margin;
1314         y = t->width + t->margin;
1315         wl_list_for_each(button, &frame->buttons_list, link) {
1316                 const int button_padding = 4;
1317                 w = cairo_image_surface_get_width(button->icon);
1318                 h = cairo_image_surface_get_height(button->icon);
1319
1320                 if (button->decoration == FRAME_BUTTON_FANCY)
1321                         w += 10;
1322
1323                 if (button->align == FRAME_BUTTON_LEFT) {
1324                         widget_set_allocation(button->widget,
1325                                               x_l, y , w + 1, h + 1);
1326                         x_l += w;
1327                         x_l += button_padding;
1328                 } else {
1329                         x_r -= w;
1330                         widget_set_allocation(button->widget,
1331                                               x_r, y , w + 1, h + 1);
1332                         x_r -= button_padding;
1333                 }
1334         }
1335 }
1336
1337 static int
1338 frame_button_enter_handler(struct widget *widget,
1339                            struct input *input, float x, float y, void *data)
1340 {
1341         struct frame_button *frame_button = data;
1342
1343         widget_schedule_redraw(frame_button->widget);
1344         frame_button->state = FRAME_BUTTON_OVER;
1345
1346         return CURSOR_LEFT_PTR;
1347 }
1348
1349 static void
1350 frame_button_leave_handler(struct widget *widget, struct input *input, void *data)
1351 {
1352         struct frame_button *frame_button = data;
1353
1354         widget_schedule_redraw(frame_button->widget);
1355         frame_button->state = FRAME_BUTTON_DEFAULT;
1356 }
1357
1358 static void
1359 frame_button_button_handler(struct widget *widget,
1360                             struct input *input, uint32_t time,
1361                             uint32_t button,
1362                             enum wl_pointer_button_state state, void *data)
1363 {
1364         struct frame_button *frame_button = data;
1365         struct window *window = widget->window;
1366
1367         if (button != BTN_LEFT)
1368                 return;
1369
1370         switch (state) {
1371         case WL_POINTER_BUTTON_STATE_PRESSED:
1372                 frame_button->state = FRAME_BUTTON_ACTIVE;
1373                 widget_schedule_redraw(frame_button->widget);
1374
1375                 if (frame_button->type == FRAME_BUTTON_ICON)
1376                         window_show_frame_menu(window, input, time);
1377                 return;
1378         case WL_POINTER_BUTTON_STATE_RELEASED:
1379                 frame_button->state = FRAME_BUTTON_DEFAULT;
1380                 widget_schedule_redraw(frame_button->widget);
1381                 break;
1382         }
1383
1384         switch (frame_button->type) {
1385         case FRAME_BUTTON_CLOSE:
1386                 if (window->close_handler)
1387                         window->close_handler(window->parent,
1388                                               window->user_data);
1389                 else
1390                         display_exit(window->display);
1391                 break;
1392         case FRAME_BUTTON_MINIMIZE:
1393                 fprintf(stderr,"Minimize stub\n");
1394                 break;
1395         case FRAME_BUTTON_MAXIMIZE:
1396                 window_set_maximized(window, window->type != TYPE_MAXIMIZED);
1397                 break;
1398         default:
1399                 /* Unknown operation */
1400                 break;
1401         }
1402 }
1403
1404 static void
1405 frame_button_redraw_handler(struct widget *widget, void *data)
1406 {
1407         struct frame_button *frame_button = data;
1408         cairo_t *cr;
1409         int width, height, x, y;
1410         struct window *window = widget->window;
1411
1412         x = widget->allocation.x;
1413         y = widget->allocation.y;
1414         width = widget->allocation.width;
1415         height = widget->allocation.height;
1416
1417         if (!width)
1418                 return;
1419         if (!height)
1420                 return;
1421         if (widget->opaque)
1422                 return;
1423
1424         cr = cairo_create(window->cairo_surface);
1425
1426         if (frame_button->decoration == FRAME_BUTTON_FANCY) {
1427                 cairo_set_line_width(cr, 1);
1428
1429                 cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1430                 cairo_rectangle (cr, x, y, 25, 16);
1431
1432                 cairo_stroke_preserve(cr);
1433
1434                 switch (frame_button->state) {
1435                 case FRAME_BUTTON_DEFAULT:
1436                         cairo_set_source_rgb(cr, 0.88, 0.88, 0.88);
1437                         break;
1438                 case FRAME_BUTTON_OVER:
1439                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1440                         break;
1441                 case FRAME_BUTTON_ACTIVE:
1442                         cairo_set_source_rgb(cr, 0.7, 0.7, 0.7);
1443                         break;
1444                 }
1445
1446                 cairo_fill (cr);
1447
1448                 x += 4;
1449         }
1450
1451         cairo_set_source_surface(cr, frame_button->icon, x, y);
1452         cairo_paint(cr);
1453
1454         cairo_destroy(cr);
1455 }
1456
1457 static struct widget *
1458 frame_button_create(struct frame *frame, void *data, enum frame_button_action type,
1459         enum frame_button_align align, enum frame_button_decoration style)
1460 {
1461         struct frame_button *frame_button;
1462         const char *icon = data;
1463
1464         frame_button = malloc (sizeof *frame_button);
1465         memset(frame_button, 0, sizeof *frame_button);
1466
1467         frame_button->icon = cairo_image_surface_create_from_png(icon);
1468         frame_button->widget = widget_add_widget(frame->widget, frame_button);
1469         frame_button->frame = frame;
1470         frame_button->type = type;
1471         frame_button->align = align;
1472         frame_button->decoration = style;
1473
1474         wl_list_insert(frame->buttons_list.prev, &frame_button->link);
1475
1476         widget_set_redraw_handler(frame_button->widget, frame_button_redraw_handler);
1477         widget_set_enter_handler(frame_button->widget, frame_button_enter_handler);
1478         widget_set_leave_handler(frame_button->widget, frame_button_leave_handler);
1479         widget_set_button_handler(frame_button->widget, frame_button_button_handler);
1480         return frame_button->widget;
1481 }
1482
1483 static void
1484 frame_button_destroy(struct frame_button *frame_button)
1485 {
1486         widget_destroy(frame_button->widget);
1487         wl_list_remove(&frame_button->link);
1488         cairo_surface_destroy(frame_button->icon);
1489         free(frame_button);
1490
1491         return;
1492 }
1493
1494 static void
1495 frame_redraw_handler(struct widget *widget, void *data)
1496 {
1497         cairo_t *cr;
1498         struct window *window = widget->window;
1499         struct theme *t = window->display->theme;
1500         uint32_t flags = 0;
1501
1502         if (window->type == TYPE_FULLSCREEN)
1503                 return;
1504
1505         cr = cairo_create(window->cairo_surface);
1506
1507         if (window->keyboard_device)
1508                 flags |= THEME_FRAME_ACTIVE;
1509         theme_render_frame(t, cr, widget->allocation.width,
1510                            widget->allocation.height, window->title, flags);
1511
1512         cairo_destroy(cr);
1513 }
1514
1515 static int
1516 frame_get_pointer_image_for_location(struct frame *frame, struct input *input)
1517 {
1518         struct theme *t = frame->widget->window->display->theme;
1519         int location;
1520
1521         location = theme_get_location(t, input->sx, input->sy,
1522                                       frame->widget->allocation.width,
1523                                       frame->widget->allocation.height);
1524
1525         switch (location) {
1526         case THEME_LOCATION_RESIZING_TOP:
1527                 return CURSOR_TOP;
1528         case THEME_LOCATION_RESIZING_BOTTOM:
1529                 return CURSOR_BOTTOM;
1530         case THEME_LOCATION_RESIZING_LEFT:
1531                 return CURSOR_LEFT;
1532         case THEME_LOCATION_RESIZING_RIGHT:
1533                 return CURSOR_RIGHT;
1534         case THEME_LOCATION_RESIZING_TOP_LEFT:
1535                 return CURSOR_TOP_LEFT;
1536         case THEME_LOCATION_RESIZING_TOP_RIGHT:
1537                 return CURSOR_TOP_RIGHT;
1538         case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
1539                 return CURSOR_BOTTOM_LEFT;
1540         case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
1541                 return CURSOR_BOTTOM_RIGHT;
1542         case THEME_LOCATION_EXTERIOR:
1543         case THEME_LOCATION_TITLEBAR:
1544         default:
1545                 return CURSOR_LEFT_PTR;
1546         }
1547 }
1548
1549 static void
1550 frame_menu_func(struct window *window, int index, void *data)
1551 {
1552         switch (index) {
1553         case 0: /* close */
1554                 if (window->close_handler)
1555                         window->close_handler(window->parent,
1556                                               window->user_data);
1557                 else
1558                         display_exit(window->display);
1559                 break;
1560         case 1: /* fullscreen */
1561                 /* we don't have a way to get out of fullscreen for now */
1562                 window_set_fullscreen(window, 1);
1563                 break;
1564         case 2: /* rotate */
1565         case 3: /* scale */
1566                 break;
1567         }
1568 }
1569
1570 void
1571 window_show_frame_menu(struct window *window,
1572                        struct input *input, uint32_t time)
1573 {
1574         int32_t x, y;
1575
1576         static const char *entries[] = {
1577                 "Close", "Fullscreen", "Rotate", "Scale"
1578         };
1579
1580         input_get_position(input, &x, &y);
1581         window_show_menu(window->display, input, time, window,
1582                          x - 10, y - 10, frame_menu_func, entries, 4);
1583 }
1584
1585 static int
1586 frame_enter_handler(struct widget *widget,
1587                     struct input *input, float x, float y, void *data)
1588 {
1589         return frame_get_pointer_image_for_location(data, input);
1590 }
1591
1592 static int
1593 frame_motion_handler(struct widget *widget,
1594                      struct input *input, uint32_t time,
1595                      float x, float y, void *data)
1596 {
1597         return frame_get_pointer_image_for_location(data, input);
1598 }
1599
1600 static void
1601 frame_button_handler(struct widget *widget,
1602                      struct input *input, uint32_t time,
1603                      uint32_t button, enum wl_pointer_button_state state,
1604                      void *data)
1605
1606 {
1607         struct frame *frame = data;
1608         struct window *window = widget->window;
1609         struct display *display = window->display;
1610         int location;
1611
1612         location = theme_get_location(display->theme, input->sx, input->sy,
1613                                       frame->widget->allocation.width,
1614                                       frame->widget->allocation.height);
1615
1616         if (window->display->shell && button == BTN_LEFT &&
1617             state == WL_POINTER_BUTTON_STATE_PRESSED) {
1618                 switch (location) {
1619                 case THEME_LOCATION_TITLEBAR:
1620                         if (!window->shell_surface)
1621                                 break;
1622                         input_set_pointer_image(input, CURSOR_DRAGGING);
1623                         input_ungrab(input);
1624                         wl_shell_surface_move(window->shell_surface,
1625                                               input_get_seat(input),
1626                                               display->serial);
1627                         break;
1628                 case THEME_LOCATION_RESIZING_TOP:
1629                 case THEME_LOCATION_RESIZING_BOTTOM:
1630                 case THEME_LOCATION_RESIZING_LEFT:
1631                 case THEME_LOCATION_RESIZING_RIGHT:
1632                 case THEME_LOCATION_RESIZING_TOP_LEFT:
1633                 case THEME_LOCATION_RESIZING_TOP_RIGHT:
1634                 case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
1635                 case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
1636                         if (!window->shell_surface)
1637                                 break;
1638                         input_ungrab(input);
1639
1640                         if (!display->dpy) {
1641                                 /* If we're using shm, allocate a big
1642                                    pool to create buffers out of while
1643                                    we resize.  We should probably base
1644                                    this number on the size of the output. */
1645                                 window->pool =
1646                                         shm_pool_create(display, 6 * 1024 * 1024);
1647                         }
1648
1649                         wl_shell_surface_resize(window->shell_surface,
1650                                                 input_get_seat(input),
1651                                                 display->serial, location);
1652                         break;
1653                 }
1654         } else if (button == BTN_RIGHT &&
1655                    state == WL_POINTER_BUTTON_STATE_PRESSED) {
1656                 window_show_frame_menu(window, input, time);
1657         }
1658 }
1659
1660 struct widget *
1661 frame_create(struct window *window, void *data)
1662 {
1663         struct frame *frame;
1664
1665         frame = malloc(sizeof *frame);
1666         memset(frame, 0, sizeof *frame);
1667
1668         frame->widget = window_add_widget(window, frame);
1669         frame->child = widget_add_widget(frame->widget, data);
1670
1671         widget_set_redraw_handler(frame->widget, frame_redraw_handler);
1672         widget_set_resize_handler(frame->widget, frame_resize_handler);
1673         widget_set_enter_handler(frame->widget, frame_enter_handler);
1674         widget_set_motion_handler(frame->widget, frame_motion_handler);
1675         widget_set_button_handler(frame->widget, frame_button_handler);
1676
1677         /* Create empty list for frame buttons */
1678         wl_list_init(&frame->buttons_list);
1679
1680         frame_button_create(frame, DATADIR "/weston/icon_window.png",
1681                 FRAME_BUTTON_ICON, FRAME_BUTTON_LEFT, FRAME_BUTTON_NONE);
1682
1683         frame_button_create(frame, DATADIR "/weston/sign_close.png",
1684                 FRAME_BUTTON_CLOSE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
1685
1686         frame_button_create(frame, DATADIR "/weston/sign_maximize.png",
1687                 FRAME_BUTTON_MAXIMIZE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
1688
1689         frame_button_create(frame, DATADIR "/weston/sign_minimize.png",
1690                 FRAME_BUTTON_MINIMIZE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
1691
1692         window->frame = frame;
1693
1694         return frame->child;
1695 }
1696
1697 void
1698 frame_set_child_size(struct widget *widget, int child_width, int child_height)
1699 {
1700         struct display *display = widget->window->display;
1701         struct theme *t = display->theme;
1702         int decoration_width, decoration_height;
1703         int width, height;
1704
1705         if (widget->window->type != TYPE_FULLSCREEN) {
1706                 decoration_width = (t->width + t->margin) * 2;
1707                 decoration_height = t->width +
1708                         t->titlebar_height + t->margin * 2;
1709
1710                 width = child_width + decoration_width;
1711                 height = child_height + decoration_height;
1712         } else {
1713                 width = child_width;
1714                 height = child_height;
1715         }
1716
1717         window_schedule_resize(widget->window, width, height);
1718 }
1719
1720 static void
1721 frame_destroy(struct frame *frame)
1722 {
1723         struct frame_button *button, *tmp;
1724
1725         wl_list_for_each_safe(button, tmp, &frame->buttons_list, link)
1726                 frame_button_destroy(button);
1727
1728         /* frame->child must be destroyed by the application */
1729         widget_destroy(frame->widget);
1730         free(frame);
1731 }
1732
1733 static void
1734 input_set_focus_widget(struct input *input, struct widget *focus,
1735                        float x, float y)
1736 {
1737         struct widget *old, *widget;
1738         int pointer = CURSOR_LEFT_PTR;
1739
1740         if (focus == input->focus_widget)
1741                 return;
1742
1743         old = input->focus_widget;
1744         if (old) {
1745                 widget = old;
1746                 if (input->grab)
1747                         widget = input->grab;
1748                 if (widget->leave_handler)
1749                         widget->leave_handler(old, input, widget->user_data);
1750                 input->focus_widget = NULL;
1751         }
1752
1753         if (focus) {
1754                 widget = focus;
1755                 if (input->grab)
1756                         widget = input->grab;
1757                 input->focus_widget = focus;
1758                 if (widget->enter_handler)
1759                         pointer = widget->enter_handler(focus, input, x, y,
1760                                                         widget->user_data);
1761
1762                 input_set_pointer_image(input, pointer);
1763         }
1764 }
1765
1766 static void
1767 pointer_handle_motion(void *data, struct wl_pointer *pointer,
1768                       uint32_t time, wl_fixed_t sx_w, wl_fixed_t sy_w)
1769 {
1770         struct input *input = data;
1771         struct window *window = input->pointer_focus;
1772         struct widget *widget;
1773         int cursor = CURSOR_LEFT_PTR;
1774         float sx = wl_fixed_to_double(sx_w);
1775         float sy = wl_fixed_to_double(sy_w);
1776
1777         input->sx = sx;
1778         input->sy = sy;
1779
1780         if (!(input->grab && input->grab_button)) {
1781                 widget = widget_find_widget(window->widget, sx, sy);
1782                 input_set_focus_widget(input, widget, sx, sy);
1783         }
1784
1785         if (input->grab)
1786                 widget = input->grab;
1787         else
1788                 widget = input->focus_widget;
1789         if (widget && widget->motion_handler)
1790                 cursor = widget->motion_handler(input->focus_widget,
1791                                                 input, time, sx, sy,
1792                                                 widget->user_data);
1793
1794         input_set_pointer_image(input, cursor);
1795 }
1796
1797 void
1798 input_grab(struct input *input, struct widget *widget, uint32_t button)
1799 {
1800         input->grab = widget;
1801         input->grab_button = button;
1802 }
1803
1804 void
1805 input_ungrab(struct input *input)
1806 {
1807         struct widget *widget;
1808
1809         input->grab = NULL;
1810         if (input->pointer_focus) {
1811                 widget = widget_find_widget(input->pointer_focus->widget,
1812                                             input->sx, input->sy);
1813                 input_set_focus_widget(input, widget, input->sx, input->sy);
1814         }
1815 }
1816
1817 static void
1818 pointer_handle_button(void *data, struct wl_pointer *pointer, uint32_t serial,
1819                       uint32_t time, uint32_t button, uint32_t state_w)
1820 {
1821         struct input *input = data;
1822         struct widget *widget;
1823         enum wl_pointer_button_state state = state_w;
1824
1825         input->display->serial = serial;
1826         if (input->focus_widget && input->grab == NULL &&
1827             state == WL_POINTER_BUTTON_STATE_PRESSED)
1828                 input_grab(input, input->focus_widget, button);
1829
1830         widget = input->grab;
1831         if (widget && widget->button_handler)
1832                 (*widget->button_handler)(widget,
1833                                           input, time,
1834                                           button, state,
1835                                           input->grab->user_data);
1836
1837         if (input->grab && input->grab_button == button &&
1838             state == WL_POINTER_BUTTON_STATE_RELEASED)
1839                 input_ungrab(input);
1840 }
1841
1842 static void
1843 pointer_handle_axis(void *data, struct wl_pointer *pointer,
1844                     uint32_t time, uint32_t axis, wl_fixed_t value)
1845 {
1846 }
1847
1848 static void
1849 keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
1850                     uint32_t serial, uint32_t time, uint32_t key,
1851                     uint32_t state_w)
1852 {
1853         struct input *input = data;
1854         struct window *window = input->keyboard_focus;
1855         uint32_t code, num_syms;
1856         enum wl_keyboard_key_state state = state_w;
1857         const xkb_keysym_t *syms;
1858         xkb_keysym_t sym;
1859         xkb_mod_mask_t mask;
1860         struct itimerspec its;
1861
1862         input->display->serial = serial;
1863         code = key + 8;
1864         if (!window || window->keyboard_device != input || !input->xkb.state)
1865                 return;
1866
1867         num_syms = xkb_key_get_syms(input->xkb.state, code, &syms);
1868
1869         mask = xkb_state_serialize_mods(input->xkb.state,
1870                                         XKB_STATE_DEPRESSED |
1871                                         XKB_STATE_LATCHED);
1872         input->modifiers = 0;
1873         if (mask & input->xkb.control_mask)
1874                 input->modifiers |= MOD_CONTROL_MASK;
1875         if (mask & input->xkb.alt_mask)
1876                 input->modifiers |= MOD_ALT_MASK;
1877         if (mask & input->xkb.shift_mask)
1878                 input->modifiers |= MOD_SHIFT_MASK;
1879
1880         sym = XKB_KEY_NoSymbol;
1881         if (num_syms == 1)
1882                 sym = syms[0];
1883
1884         if (sym == XKB_KEY_F5 && input->modifiers == MOD_ALT_MASK) {
1885                 if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
1886                         window_set_maximized(window,
1887                                              window->type != TYPE_MAXIMIZED);
1888         } else if (window->key_handler) {
1889                 (*window->key_handler)(window, input, time, key,
1890                                        sym, state, window->user_data);
1891         }
1892
1893         if (state == WL_KEYBOARD_KEY_STATE_RELEASED &&
1894             key == input->repeat_key) {
1895                 its.it_interval.tv_sec = 0;
1896                 its.it_interval.tv_nsec = 0;
1897                 its.it_value.tv_sec = 0;
1898                 its.it_value.tv_nsec = 0;
1899                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
1900         } else if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
1901                 input->repeat_sym = sym;
1902                 input->repeat_key = key;
1903                 input->repeat_time = time;
1904                 its.it_interval.tv_sec = 0;
1905                 its.it_interval.tv_nsec = 25 * 1000 * 1000;
1906                 its.it_value.tv_sec = 0;
1907                 its.it_value.tv_nsec = 400 * 1000 * 1000;
1908                 timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
1909         }
1910 }
1911
1912 static void
1913 keyboard_repeat_func(struct task *task, uint32_t events)
1914 {
1915         struct input *input =
1916                 container_of(task, struct input, repeat_task);
1917         struct window *window = input->keyboard_focus;
1918         uint64_t exp;
1919
1920         if (read(input->repeat_timer_fd, &exp, sizeof exp) != sizeof exp)
1921                 /* If we change the timer between the fd becoming
1922                  * readable and getting here, there'll be nothing to
1923                  * read and we get EAGAIN. */
1924                 return;
1925
1926         if (window && window->key_handler) {
1927                 (*window->key_handler)(window, input, input->repeat_time,
1928                                        input->repeat_key, input->repeat_sym,
1929                                        WL_KEYBOARD_KEY_STATE_PRESSED,
1930                                        window->user_data);
1931         }
1932 }
1933
1934 static void
1935 keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
1936                           uint32_t serial, uint32_t mods_depressed,
1937                           uint32_t mods_latched, uint32_t mods_locked,
1938                           uint32_t group)
1939 {
1940         struct input *input = data;
1941
1942         xkb_state_update_mask(input->xkb.state, mods_depressed, mods_latched,
1943                               mods_locked, 0, 0, group);
1944 }
1945
1946 static void
1947 input_remove_pointer_focus(struct input *input)
1948 {
1949         struct window *window = input->pointer_focus;
1950
1951         if (!window)
1952                 return;
1953
1954         input_set_focus_widget(input, NULL, 0, 0);
1955
1956         input->pointer_focus = NULL;
1957         input->current_cursor = CURSOR_UNSET;
1958 }
1959
1960 static void
1961 pointer_handle_enter(void *data, struct wl_pointer *pointer,
1962                      uint32_t serial, struct wl_surface *surface,
1963                      wl_fixed_t sx_w, wl_fixed_t sy_w)
1964 {
1965         struct input *input = data;
1966         struct window *window;
1967         struct widget *widget;
1968         float sx = wl_fixed_to_double(sx_w);
1969         float sy = wl_fixed_to_double(sy_w);
1970
1971         if (!surface) {
1972                 /* enter event for a window we've just destroyed */
1973                 return;
1974         }
1975
1976         input->display->serial = serial;
1977         input->pointer_enter_serial = serial;
1978         input->pointer_focus = wl_surface_get_user_data(surface);
1979         window = input->pointer_focus;
1980
1981         if (window->pool) {
1982                 shm_pool_destroy(window->pool);
1983                 window->pool = NULL;
1984                 /* Schedule a redraw to free the pool */
1985                 window_schedule_redraw(window);
1986         }
1987
1988         input->sx = sx;
1989         input->sy = sy;
1990
1991         widget = widget_find_widget(window->widget, sx, sy);
1992         input_set_focus_widget(input, widget, sx, sy);
1993 }
1994
1995 static void
1996 pointer_handle_leave(void *data, struct wl_pointer *pointer,
1997                      uint32_t serial, struct wl_surface *surface)
1998 {
1999         struct input *input = data;
2000
2001         input->display->serial = serial;
2002         input_remove_pointer_focus(input);
2003 }
2004
2005 static void
2006 input_remove_keyboard_focus(struct input *input)
2007 {
2008         struct window *window = input->keyboard_focus;
2009         struct itimerspec its;
2010
2011         its.it_interval.tv_sec = 0;
2012         its.it_interval.tv_nsec = 0;
2013         its.it_value.tv_sec = 0;
2014         its.it_value.tv_nsec = 0;
2015         timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
2016
2017         if (!window)
2018                 return;
2019
2020         window->keyboard_device = NULL;
2021         if (window->keyboard_focus_handler)
2022                 (*window->keyboard_focus_handler)(window, NULL,
2023                                                   window->user_data);
2024
2025         input->keyboard_focus = NULL;
2026 }
2027
2028 static void
2029 keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
2030                       uint32_t serial, struct wl_surface *surface,
2031                       struct wl_array *keys)
2032 {
2033         struct input *input = data;
2034         struct window *window;
2035
2036         input->display->serial = serial;
2037         input->keyboard_focus = wl_surface_get_user_data(surface);
2038
2039         window = input->keyboard_focus;
2040         window->keyboard_device = input;
2041         if (window->keyboard_focus_handler)
2042                 (*window->keyboard_focus_handler)(window,
2043                                                   window->keyboard_device,
2044                                                   window->user_data);
2045 }
2046
2047 static void
2048 keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,
2049                       uint32_t serial, struct wl_surface *surface)
2050 {
2051         struct input *input = data;
2052
2053         input->display->serial = serial;
2054         input_remove_keyboard_focus(input);
2055 }
2056
2057 static void
2058 keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
2059                        uint32_t format, int fd, uint32_t size)
2060 {
2061         struct input *input = data;
2062         char *map_str;
2063
2064         if (!data) {
2065                 close(fd);
2066                 return;
2067         }
2068
2069         if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
2070                 close(fd);
2071                 return;
2072         }
2073
2074         map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
2075         if (map_str == MAP_FAILED) {
2076                 close(fd);
2077                 return;
2078         }
2079
2080         input->xkb.keymap = xkb_map_new_from_string(input->display->xkb_context,
2081                                                     map_str,
2082                                                     XKB_KEYMAP_FORMAT_TEXT_V1,
2083                                                     0);
2084         munmap(map_str, size);
2085         close(fd);
2086
2087         if (!input->xkb.keymap) {
2088                 fprintf(stderr, "failed to compile keymap\n");
2089                 return;
2090         }
2091
2092         input->xkb.state = xkb_state_new(input->xkb.keymap);
2093         if (!input->xkb.state) {
2094                 fprintf(stderr, "failed to create XKB state\n");
2095                 xkb_map_unref(input->xkb.keymap);
2096                 input->xkb.keymap = NULL;
2097                 return;
2098         }
2099
2100         input->xkb.control_mask =
2101                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Control");
2102         input->xkb.alt_mask =
2103                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Mod1");
2104         input->xkb.shift_mask =
2105                 1 << xkb_map_mod_get_index(input->xkb.keymap, "Shift");
2106 }
2107
2108 static const struct wl_pointer_listener pointer_listener = {
2109         pointer_handle_enter,
2110         pointer_handle_leave,
2111         pointer_handle_motion,
2112         pointer_handle_button,
2113         pointer_handle_axis,
2114 };
2115
2116 static const struct wl_keyboard_listener keyboard_listener = {
2117         keyboard_handle_keymap,
2118         keyboard_handle_enter,
2119         keyboard_handle_leave,
2120         keyboard_handle_key,
2121         keyboard_handle_modifiers,
2122 };
2123
2124 static void
2125 seat_handle_capabilities(void *data, struct wl_seat *seat,
2126                          enum wl_seat_capability caps)
2127 {
2128         struct input *input = data;
2129
2130         if ((caps & WL_SEAT_CAPABILITY_POINTER) && !input->pointer) {
2131                 input->pointer = wl_seat_get_pointer(seat);
2132                 wl_pointer_set_user_data(input->pointer, input);
2133                 wl_pointer_add_listener(input->pointer, &pointer_listener,
2134                                         input);
2135         } else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && input->pointer) {
2136                 wl_pointer_destroy(input->pointer);
2137                 input->pointer = NULL;
2138         }
2139
2140         if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
2141                 input->keyboard = wl_seat_get_keyboard(seat);
2142                 wl_keyboard_set_user_data(input->keyboard, input);
2143                 wl_keyboard_add_listener(input->keyboard, &keyboard_listener,
2144                                          input);
2145         } else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) {
2146                 wl_keyboard_destroy(input->keyboard);
2147                 input->keyboard = NULL;
2148         }
2149 }
2150
2151 static const struct wl_seat_listener seat_listener = {
2152         seat_handle_capabilities,
2153 };
2154
2155 void
2156 input_get_position(struct input *input, int32_t *x, int32_t *y)
2157 {
2158         *x = input->sx;
2159         *y = input->sy;
2160 }
2161
2162 struct display *
2163 input_get_display(struct input *input)
2164 {
2165         return input->display;
2166 }
2167
2168 struct wl_seat *
2169 input_get_seat(struct input *input)
2170 {
2171         return input->seat;
2172 }
2173
2174 uint32_t
2175 input_get_modifiers(struct input *input)
2176 {
2177         return input->modifiers;
2178 }
2179
2180 struct widget *
2181 input_get_focus_widget(struct input *input)
2182 {
2183         return input->focus_widget;
2184 }
2185
2186 struct data_offer {
2187         struct wl_data_offer *offer;
2188         struct input *input;
2189         struct wl_array types;
2190         int refcount;
2191
2192         struct task io_task;
2193         int fd;
2194         data_func_t func;
2195         int32_t x, y;
2196         void *user_data;
2197 };
2198
2199 static void
2200 data_offer_offer(void *data, struct wl_data_offer *wl_data_offer, const char *type)
2201 {
2202         struct data_offer *offer = data;
2203         char **p;
2204
2205         p = wl_array_add(&offer->types, sizeof *p);
2206         *p = strdup(type);
2207 }
2208
2209 static const struct wl_data_offer_listener data_offer_listener = {
2210         data_offer_offer,
2211 };
2212
2213 static void
2214 data_offer_destroy(struct data_offer *offer)
2215 {
2216         char **p;
2217
2218         offer->refcount--;
2219         if (offer->refcount == 0) {
2220                 wl_data_offer_destroy(offer->offer);
2221                 for (p = offer->types.data; *p; p++)
2222                         free(*p);
2223                 wl_array_release(&offer->types);
2224                 free(offer);
2225         }
2226 }
2227
2228 static void
2229 data_device_data_offer(void *data,
2230                        struct wl_data_device *data_device,
2231                        struct wl_data_offer *_offer)
2232 {
2233         struct data_offer *offer;
2234
2235         offer = malloc(sizeof *offer);
2236
2237         wl_array_init(&offer->types);
2238         offer->refcount = 1;
2239         offer->input = data;
2240         offer->offer = _offer;
2241         wl_data_offer_add_listener(offer->offer,
2242                                    &data_offer_listener, offer);
2243 }
2244
2245 static void
2246 data_device_enter(void *data, struct wl_data_device *data_device,
2247                   uint32_t serial, struct wl_surface *surface,
2248                   wl_fixed_t x_w, wl_fixed_t y_w,
2249                   struct wl_data_offer *offer)
2250 {
2251         struct input *input = data;
2252         struct window *window;
2253         void *types_data;
2254         float x = wl_fixed_to_double(x_w);
2255         float y = wl_fixed_to_double(y_w);
2256         char **p;
2257
2258         input->pointer_enter_serial = serial;
2259         window = wl_surface_get_user_data(surface);
2260         input->pointer_focus = window;
2261
2262         if (offer) {
2263                 input->drag_offer = wl_data_offer_get_user_data(offer);
2264
2265                 p = wl_array_add(&input->drag_offer->types, sizeof *p);
2266                 *p = NULL;
2267
2268                 types_data = input->drag_offer->types.data;
2269         } else {
2270                 input->drag_offer = NULL;
2271                 types_data = NULL;
2272         }
2273
2274         window = input->pointer_focus;
2275         if (window->data_handler)
2276                 window->data_handler(window, input, x, y, types_data,
2277                                      window->user_data);
2278 }
2279
2280 static void
2281 data_device_leave(void *data, struct wl_data_device *data_device)
2282 {
2283         struct input *input = data;
2284
2285         if (input->drag_offer) {
2286                 data_offer_destroy(input->drag_offer);
2287                 input->drag_offer = NULL;
2288         }
2289 }
2290
2291 static void
2292 data_device_motion(void *data, struct wl_data_device *data_device,
2293                    uint32_t time, wl_fixed_t x_w, wl_fixed_t y_w)
2294 {
2295         struct input *input = data;
2296         struct window *window = input->pointer_focus;
2297         float x = wl_fixed_to_double(x_w);
2298         float y = wl_fixed_to_double(y_w);
2299         void *types_data;
2300
2301         input->sx = x;
2302         input->sy = y;
2303
2304         if (input->drag_offer)
2305                 types_data = input->drag_offer->types.data;
2306         else
2307                 types_data = NULL;
2308
2309         if (window->data_handler)
2310                 window->data_handler(window, input, x, y, types_data,
2311                                      window->user_data);
2312 }
2313
2314 static void
2315 data_device_drop(void *data, struct wl_data_device *data_device)
2316 {
2317         struct input *input = data;
2318         struct window *window = input->pointer_focus;
2319
2320         if (window->drop_handler)
2321                 window->drop_handler(window, input,
2322                                      input->sx, input->sy, window->user_data);
2323 }
2324
2325 static void
2326 data_device_selection(void *data,
2327                       struct wl_data_device *wl_data_device,
2328                       struct wl_data_offer *offer)
2329 {
2330         struct input *input = data;
2331         char **p;
2332
2333         if (input->selection_offer)
2334                 data_offer_destroy(input->selection_offer);
2335
2336         if (offer) {
2337                 input->selection_offer = wl_data_offer_get_user_data(offer);
2338                 p = wl_array_add(&input->selection_offer->types, sizeof *p);
2339                 *p = NULL;
2340         } else {
2341                 input->selection_offer = NULL;
2342         }
2343 }
2344
2345 static const struct wl_data_device_listener data_device_listener = {
2346         data_device_data_offer,
2347         data_device_enter,
2348         data_device_leave,
2349         data_device_motion,
2350         data_device_drop,
2351         data_device_selection
2352 };
2353
2354 static void
2355 input_set_pointer_image_index(struct input *input, int index)
2356 {
2357         struct wl_buffer *buffer;
2358         struct wl_cursor *cursor;
2359         struct wl_cursor_image *image;
2360
2361         cursor = input->display->cursors[input->current_cursor];
2362         if (!cursor)
2363                 return;
2364
2365         if (index >= (int) cursor->image_count) {
2366                 fprintf(stderr, "cursor index out of range\n");
2367                 return;
2368         }
2369
2370         image = cursor->images[index];
2371         buffer = wl_cursor_image_get_buffer(image);
2372         if (!buffer)
2373                 return;
2374
2375         wl_pointer_set_cursor(input->pointer, input->display->serial,
2376                               input->pointer_surface,
2377                               image->hotspot_x, image->hotspot_y);
2378         wl_surface_attach(input->pointer_surface, buffer, 0, 0);
2379         wl_surface_damage(input->pointer_surface, 0, 0,
2380                           image->width, image->height);
2381 }
2382
2383 static const struct wl_callback_listener pointer_surface_listener;
2384
2385 static void
2386 pointer_surface_frame_callback(void *data, struct wl_callback *callback,
2387                                uint32_t time)
2388 {
2389         struct input *input = data;
2390         struct wl_cursor *cursor;
2391         int i;
2392
2393         if (callback) {
2394                 assert(callback == input->cursor_frame_cb);
2395                 wl_callback_destroy(callback);
2396                 input->cursor_frame_cb = NULL;
2397         }
2398
2399         if (input->current_cursor == CURSOR_BLANK) {
2400                 wl_pointer_set_cursor(input->pointer, input->display->serial,
2401                                       NULL, 0, 0);
2402                 return;
2403         }
2404
2405         if (input->current_cursor == CURSOR_UNSET)
2406                 return;
2407         cursor = input->display->cursors[input->current_cursor];
2408         if (!cursor)
2409                 return;
2410
2411         /* FIXME We don't have the current time on the first call so we set
2412          * the animation start to the time of the first frame callback. */
2413         if (time == 0)
2414                 input->cursor_anim_start = 0;
2415         else if (input->cursor_anim_start == 0)
2416                 input->cursor_anim_start = time;
2417
2418         if (time == 0 || input->cursor_anim_start == 0)
2419                 i = 0;
2420         else
2421                 i = wl_cursor_frame(cursor, time - input->cursor_anim_start);
2422
2423         input_set_pointer_image_index(input, i);
2424
2425         if (cursor->image_count == 1)
2426                 return;
2427
2428         input->cursor_frame_cb = wl_surface_frame(input->pointer_surface);
2429         wl_callback_add_listener(input->cursor_frame_cb,
2430                                  &pointer_surface_listener, input);
2431 }
2432
2433 static const struct wl_callback_listener pointer_surface_listener = {
2434         pointer_surface_frame_callback
2435 };
2436
2437 void
2438 input_set_pointer_image(struct input *input, int pointer)
2439 {
2440         if (pointer == input->current_cursor &&
2441             input->pointer_enter_serial == input->cursor_serial)
2442                 return;
2443
2444         input->current_cursor = pointer;
2445         input->cursor_serial = input->pointer_enter_serial;
2446         if (!input->cursor_frame_cb)
2447                 pointer_surface_frame_callback(input, NULL, 0);
2448 }
2449
2450 struct wl_data_device *
2451 input_get_data_device(struct input *input)
2452 {
2453         return input->data_device;
2454 }
2455
2456 void
2457 input_set_selection(struct input *input,
2458                     struct wl_data_source *source, uint32_t time)
2459 {
2460         wl_data_device_set_selection(input->data_device, source, time);
2461 }
2462
2463 void
2464 input_accept(struct input *input, const char *type)
2465 {
2466         wl_data_offer_accept(input->drag_offer->offer,
2467                              input->pointer_enter_serial, type);
2468 }
2469
2470 static void
2471 offer_io_func(struct task *task, uint32_t events)
2472 {
2473         struct data_offer *offer =
2474                 container_of(task, struct data_offer, io_task);
2475         unsigned int len;
2476         char buffer[4096];
2477
2478         len = read(offer->fd, buffer, sizeof buffer);
2479         offer->func(buffer, len,
2480                     offer->x, offer->y, offer->user_data);
2481
2482         if (len == 0) {
2483                 close(offer->fd);
2484                 data_offer_destroy(offer);
2485         }
2486 }
2487
2488 static void
2489 data_offer_receive_data(struct data_offer *offer, const char *mime_type,
2490                         data_func_t func, void *user_data)
2491 {
2492         int p[2];
2493
2494         if (pipe2(p, O_CLOEXEC) == -1)
2495                 return;
2496
2497         wl_data_offer_receive(offer->offer, mime_type, p[1]);
2498         close(p[1]);
2499
2500         offer->io_task.run = offer_io_func;
2501         offer->fd = p[0];
2502         offer->func = func;
2503         offer->refcount++;
2504         offer->user_data = user_data;
2505
2506         display_watch_fd(offer->input->display,
2507                          offer->fd, EPOLLIN, &offer->io_task);
2508 }
2509
2510 void
2511 input_receive_drag_data(struct input *input, const char *mime_type,
2512                         data_func_t func, void *data)
2513 {
2514         data_offer_receive_data(input->drag_offer, mime_type, func, data);
2515         input->drag_offer->x = input->sx;
2516         input->drag_offer->y = input->sy;
2517 }
2518
2519 int
2520 input_receive_selection_data(struct input *input, const char *mime_type,
2521                              data_func_t func, void *data)
2522 {
2523         char **p;
2524
2525         if (input->selection_offer == NULL)
2526                 return -1;
2527
2528         for (p = input->selection_offer->types.data; *p; p++)
2529                 if (strcmp(mime_type, *p) == 0)
2530                         break;
2531
2532         if (*p == NULL)
2533                 return -1;
2534
2535         data_offer_receive_data(input->selection_offer,
2536                                 mime_type, func, data);
2537         return 0;
2538 }
2539
2540 int
2541 input_receive_selection_data_to_fd(struct input *input,
2542                                    const char *mime_type, int fd)
2543 {
2544         if (input->selection_offer)
2545                 wl_data_offer_receive(input->selection_offer->offer,
2546                                       mime_type, fd);
2547
2548         return 0;
2549 }
2550
2551 void
2552 window_move(struct window *window, struct input *input, uint32_t serial)
2553 {
2554         if (!window->shell_surface)
2555                 return;
2556
2557         wl_shell_surface_move(window->shell_surface, input->seat, serial);
2558 }
2559
2560 static void
2561 idle_resize(struct window *window)
2562 {
2563         struct widget *widget;
2564
2565         window->resize_needed = 0;
2566         widget = window->widget;
2567         widget_set_allocation(widget,
2568                               window->pending_allocation.x,
2569                               window->pending_allocation.y,
2570                               window->pending_allocation.width,
2571                               window->pending_allocation.height);
2572
2573         if (window->input_region) {
2574                 wl_region_destroy(window->input_region);
2575                 window->input_region = NULL;
2576         }
2577
2578         if (window->opaque_region) {
2579                 wl_region_destroy(window->opaque_region);
2580                 window->opaque_region = NULL;
2581         }
2582
2583         if (widget->resize_handler)
2584                 widget->resize_handler(widget,
2585                                        widget->allocation.width,
2586                                        widget->allocation.height,
2587                                        widget->user_data);
2588
2589         if (window->allocation.width != widget->allocation.width ||
2590             window->allocation.height != widget->allocation.height) {
2591                 window->allocation = widget->allocation;
2592                 window_schedule_redraw(window);
2593         }
2594 }
2595
2596 void
2597 window_schedule_resize(struct window *window, int width, int height)
2598 {
2599         window->pending_allocation.x = 0;
2600         window->pending_allocation.y = 0;
2601         window->pending_allocation.width = width;
2602         window->pending_allocation.height = height;
2603
2604         window->resize_needed = 1;
2605         window_schedule_redraw(window);
2606 }
2607
2608 void
2609 widget_schedule_resize(struct widget *widget, int32_t width, int32_t height)
2610 {
2611         window_schedule_resize(widget->window, width, height);
2612 }
2613
2614 static void
2615 handle_ping(void *data, struct wl_shell_surface *shell_surface,
2616                                                         uint32_t serial)
2617 {
2618         wl_shell_surface_pong(shell_surface, serial);
2619 }
2620
2621 static void
2622 handle_configure(void *data, struct wl_shell_surface *shell_surface,
2623                  uint32_t edges, int32_t width, int32_t height)
2624 {
2625         struct window *window = data;
2626
2627         if (width <= 0 || height <= 0)
2628                 return;
2629
2630         window->resize_edges = edges;
2631         window_schedule_resize(window, width, height);
2632 }
2633
2634 static void
2635 menu_destroy(struct menu *menu)
2636 {
2637         widget_destroy(menu->widget);
2638         window_destroy(menu->window);
2639         free(menu);
2640 }
2641
2642 static void
2643 handle_popup_done(void *data, struct wl_shell_surface *shell_surface)
2644 {
2645         struct window *window = data;
2646         struct menu *menu = window->widget->user_data;
2647
2648         /* FIXME: Need more context in this event, at least the input
2649          * device.  Or just use wl_callback.  And this really needs to
2650          * be a window vfunc that the menu can set.  And we need the
2651          * time. */
2652
2653         menu->func(window->parent, menu->current, window->parent->user_data);
2654         input_ungrab(menu->input);
2655         menu_destroy(menu);
2656 }
2657
2658 static const struct wl_shell_surface_listener shell_surface_listener = {
2659         handle_ping,
2660         handle_configure,
2661         handle_popup_done
2662 };
2663
2664 void
2665 window_get_allocation(struct window *window,
2666                       struct rectangle *allocation)
2667 {
2668         *allocation = window->allocation;
2669 }
2670
2671 static void
2672 widget_redraw(struct widget *widget)
2673 {
2674         struct widget *child;
2675
2676         if (widget->redraw_handler)
2677                 widget->redraw_handler(widget, widget->user_data);
2678         wl_list_for_each(child, &widget->child_list, link)
2679                 widget_redraw(child);
2680 }
2681
2682 static void
2683 frame_callback(void *data, struct wl_callback *callback, uint32_t time)
2684 {
2685         struct window *window = data;
2686
2687         wl_callback_destroy(callback);
2688         window->redraw_scheduled = 0;
2689         if (window->redraw_needed)
2690                 window_schedule_redraw(window);
2691 }
2692
2693 static const struct wl_callback_listener listener = {
2694         frame_callback
2695 };
2696
2697 static void
2698 idle_redraw(struct task *task, uint32_t events)
2699 {
2700         struct window *window = container_of(task, struct window, redraw_task);
2701         struct wl_callback *callback;
2702
2703         if (window->resize_needed)
2704                 idle_resize(window);
2705
2706         window_create_surface(window);
2707         widget_redraw(window->widget);
2708         window_flush(window);
2709         window->redraw_needed = 0;
2710         wl_list_init(&window->redraw_task.link);
2711
2712         callback = wl_surface_frame(window->surface);
2713         wl_callback_add_listener(callback, &listener, window);
2714 }
2715
2716 void
2717 window_schedule_redraw(struct window *window)
2718 {
2719         window->redraw_needed = 1;
2720         if (!window->redraw_scheduled) {
2721                 window->redraw_task.run = idle_redraw;
2722                 display_defer(window->display, &window->redraw_task);
2723                 window->redraw_scheduled = 1;
2724         }
2725 }
2726
2727 void
2728 window_set_custom(struct window *window)
2729 {
2730         window->type = TYPE_CUSTOM;
2731 }
2732
2733 void
2734 window_set_fullscreen(struct window *window, int fullscreen)
2735 {
2736         if (!window->display->shell)
2737                 return;
2738
2739         if ((window->type == TYPE_FULLSCREEN) == fullscreen)
2740                 return;
2741
2742         if (fullscreen) {
2743                 window->type = TYPE_FULLSCREEN;
2744                 window->saved_allocation = window->allocation;
2745                 wl_shell_surface_set_fullscreen(window->shell_surface,
2746                                                 WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT,
2747                                                 0, NULL);
2748         } else {
2749                 window->type = TYPE_TOPLEVEL;
2750                 wl_shell_surface_set_toplevel(window->shell_surface);
2751                 window_schedule_resize(window,
2752                                        window->saved_allocation.width,
2753                                        window->saved_allocation.height);
2754         }
2755 }
2756
2757 void
2758 window_set_maximized(struct window *window, int maximized)
2759 {
2760         if (!window->display->shell)
2761                 return;
2762
2763         if ((window->type == TYPE_MAXIMIZED) == maximized)
2764                 return;
2765
2766         if (window->type == TYPE_TOPLEVEL) {
2767                 window->saved_allocation = window->allocation;
2768                 wl_shell_surface_set_maximized(window->shell_surface, NULL);
2769                 window->type = TYPE_MAXIMIZED;
2770         } else {
2771                 wl_shell_surface_set_toplevel(window->shell_surface);
2772                 window->type = TYPE_TOPLEVEL;
2773                 window_schedule_resize(window,
2774                                        window->saved_allocation.width,
2775                                        window->saved_allocation.height);
2776         }
2777 }
2778
2779 void
2780 window_set_user_data(struct window *window, void *data)
2781 {
2782         window->user_data = data;
2783 }
2784
2785 void *
2786 window_get_user_data(struct window *window)
2787 {
2788         return window->user_data;
2789 }
2790
2791 void
2792 window_set_key_handler(struct window *window,
2793                        window_key_handler_t handler)
2794 {
2795         window->key_handler = handler;
2796 }
2797
2798 void
2799 window_set_keyboard_focus_handler(struct window *window,
2800                                   window_keyboard_focus_handler_t handler)
2801 {
2802         window->keyboard_focus_handler = handler;
2803 }
2804
2805 void
2806 window_set_data_handler(struct window *window, window_data_handler_t handler)
2807 {
2808         window->data_handler = handler;
2809 }
2810
2811 void
2812 window_set_drop_handler(struct window *window, window_drop_handler_t handler)
2813 {
2814         window->drop_handler = handler;
2815 }
2816
2817 void
2818 window_set_close_handler(struct window *window,
2819                          window_close_handler_t handler)
2820 {
2821         window->close_handler = handler;
2822 }
2823
2824 void
2825 window_set_title(struct window *window, const char *title)
2826 {
2827         free(window->title);
2828         window->title = strdup(title);
2829         if (window->shell_surface)
2830                 wl_shell_surface_set_title(window->shell_surface, title);
2831 }
2832
2833 const char *
2834 window_get_title(struct window *window)
2835 {
2836         return window->title;
2837 }
2838
2839 void
2840 window_set_text_cursor_position(struct window *window, int32_t x, int32_t y)
2841 {
2842         struct text_cursor_position *text_cursor_position =
2843                                         window->display->text_cursor_position;
2844
2845         if (!text_cursor_position)
2846                 return;
2847
2848         text_cursor_position_notify(text_cursor_position,
2849                                                 window->surface,
2850                                                 wl_fixed_from_int(x),
2851                                                 wl_fixed_from_int(y));
2852 }
2853
2854 void
2855 window_damage(struct window *window, int32_t x, int32_t y,
2856               int32_t width, int32_t height)
2857 {
2858         wl_surface_damage(window->surface, x, y, width, height);
2859 }
2860
2861 static void
2862 surface_enter(void *data,
2863               struct wl_surface *wl_surface, struct wl_output *wl_output)
2864 {
2865         struct window *window = data;
2866         struct output *output;
2867         struct output *output_found = NULL;
2868         struct window_output *window_output;
2869
2870         wl_list_for_each(output, &window->display->output_list, link) {
2871                 if (output->output == wl_output) {
2872                         output_found = output;
2873                         break;
2874                 }
2875         }
2876
2877         if (!output_found)
2878                 return;
2879
2880         window_output = malloc (sizeof *window_output);
2881         window_output->output = output_found;
2882
2883         wl_list_insert (&window->window_output_list, &window_output->link);
2884 }
2885
2886 static void
2887 surface_leave(void *data,
2888               struct wl_surface *wl_surface, struct wl_output *output)
2889 {
2890         struct window *window = data;
2891         struct window_output *window_output;
2892         struct window_output *window_output_found = NULL;
2893
2894         wl_list_for_each(window_output, &window->window_output_list, link) {
2895                 if (window_output->output->output == output) {
2896                         window_output_found = window_output;
2897                         break;
2898                 }
2899         }
2900
2901         if (window_output_found) {
2902                 wl_list_remove(&window_output_found->link);
2903                 free(window_output_found);
2904         }
2905 }
2906
2907 static const struct wl_surface_listener surface_listener = {
2908         surface_enter,
2909         surface_leave
2910 };
2911
2912 static struct window *
2913 window_create_internal(struct display *display,
2914                        struct window *parent, int type)
2915 {
2916         struct window *window;
2917
2918         window = malloc(sizeof *window);
2919         if (window == NULL)
2920                 return NULL;
2921
2922         memset(window, 0, sizeof *window);
2923         window->display = display;
2924         window->parent = parent;
2925         window->surface = wl_compositor_create_surface(display->compositor);
2926         wl_surface_add_listener(window->surface, &surface_listener, window);
2927         if (type != TYPE_CUSTOM && display->shell) {
2928                 window->shell_surface =
2929                         wl_shell_get_shell_surface(display->shell,
2930                                                    window->surface);
2931                 if (window->title)
2932                         wl_shell_surface_set_title(window->shell_surface,
2933                                                    window->title);
2934         }
2935         window->allocation.x = 0;
2936         window->allocation.y = 0;
2937         window->allocation.width = 0;
2938         window->allocation.height = 0;
2939         window->saved_allocation = window->allocation;
2940         window->transparent = 1;
2941         window->type = type;
2942         window->input_region = NULL;
2943         window->opaque_region = NULL;
2944
2945         if (display->dpy)
2946 #ifdef HAVE_CAIRO_EGL
2947                 window->buffer_type = WINDOW_BUFFER_TYPE_EGL_WINDOW;
2948 #else
2949                 window->buffer_type = WINDOW_BUFFER_TYPE_SHM;
2950 #endif
2951         else
2952                 window->buffer_type = WINDOW_BUFFER_TYPE_SHM;
2953
2954         wl_surface_set_user_data(window->surface, window);
2955         wl_list_insert(display->window_list.prev, &window->link);
2956         wl_list_init(&window->redraw_task.link);
2957
2958         if (window->shell_surface) {
2959                 wl_shell_surface_set_user_data(window->shell_surface, window);
2960                 wl_shell_surface_add_listener(window->shell_surface,
2961                                               &shell_surface_listener, window);
2962         }
2963
2964         wl_list_init (&window->window_output_list);
2965
2966         return window;
2967 }
2968
2969 struct window *
2970 window_create(struct display *display)
2971 {
2972         struct window *window;
2973
2974         window = window_create_internal(display, NULL, TYPE_NONE);
2975         if (!window)
2976                 return NULL;
2977
2978         return window;
2979 }
2980
2981 struct window *
2982 window_create_custom(struct display *display)
2983 {
2984         struct window *window;
2985
2986         window = window_create_internal(display, NULL, TYPE_CUSTOM);
2987         if (!window)
2988                 return NULL;
2989
2990         return window;
2991 }
2992
2993 struct window *
2994 window_create_transient(struct display *display, struct window *parent,
2995                         int32_t x, int32_t y, uint32_t flags)
2996 {
2997         struct window *window;
2998
2999         window = window_create_internal(parent->display,
3000                                         parent, TYPE_TRANSIENT);
3001         if (!window)
3002                 return NULL;
3003
3004         window->x = x;
3005         window->y = y;
3006
3007         if (display->shell)
3008                 wl_shell_surface_set_transient(window->shell_surface,
3009                                                window->parent->surface,
3010                                                window->x, window->y, flags);
3011
3012         return window;
3013 }
3014
3015 static void
3016 menu_set_item(struct menu *menu, int sy)
3017 {
3018         int next;
3019
3020         next = (sy - 8) / 20;
3021         if (menu->current != next) {
3022                 menu->current = next;
3023                 widget_schedule_redraw(menu->widget);
3024         }
3025 }
3026
3027 static int
3028 menu_motion_handler(struct widget *widget,
3029                     struct input *input, uint32_t time,
3030                     float x, float y, void *data)
3031 {
3032         struct menu *menu = data;
3033
3034         if (widget == menu->widget)
3035                 menu_set_item(data, y);
3036
3037         return CURSOR_LEFT_PTR;
3038 }
3039
3040 static int
3041 menu_enter_handler(struct widget *widget,
3042                    struct input *input, float x, float y, void *data)
3043 {
3044         struct menu *menu = data;
3045
3046         if (widget == menu->widget)
3047                 menu_set_item(data, y);
3048
3049         return CURSOR_LEFT_PTR;
3050 }
3051
3052 static void
3053 menu_leave_handler(struct widget *widget, struct input *input, void *data)
3054 {
3055         struct menu *menu = data;
3056
3057         if (widget == menu->widget)
3058                 menu_set_item(data, -200);
3059 }
3060
3061 static void
3062 menu_button_handler(struct widget *widget,
3063                     struct input *input, uint32_t time,
3064                     uint32_t button, enum wl_pointer_button_state state,
3065                     void *data)
3066
3067 {
3068         struct menu *menu = data;
3069
3070         if (state == WL_POINTER_BUTTON_STATE_PRESSED &&
3071             time - menu->time > 500) {
3072                 /* Either relase after press-drag-release or
3073                  * click-motion-click. */
3074                 menu->func(menu->window->parent,
3075                            menu->current, menu->window->parent->user_data);
3076                 input_ungrab(input);
3077                 menu_destroy(menu);
3078         }
3079 }
3080
3081 static void
3082 menu_redraw_handler(struct widget *widget, void *data)
3083 {
3084         cairo_t *cr;
3085         const int32_t r = 3, margin = 3;
3086         struct menu *menu = data;
3087         int32_t width, height, i;
3088         struct window *window = widget->window;
3089
3090         cr = cairo_create(window->cairo_surface);
3091         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
3092         cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
3093         cairo_paint(cr);
3094
3095         width = window->allocation.width;
3096         height = window->allocation.height;
3097         rounded_rect(cr, 0, 0, width, height, r);
3098
3099         cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
3100         cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8);
3101         cairo_fill(cr);
3102
3103         for (i = 0; i < menu->count; i++) {
3104                 if (i == menu->current) {
3105                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
3106                         cairo_rectangle(cr, margin, i * 20 + margin,
3107                                         width - 2 * margin, 20);
3108                         cairo_fill(cr);
3109                         cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
3110                         cairo_move_to(cr, 10, i * 20 + 16);
3111                         cairo_show_text(cr, menu->entries[i]);
3112                 } else {
3113                         cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
3114                         cairo_move_to(cr, 10, i * 20 + 16);
3115                         cairo_show_text(cr, menu->entries[i]);
3116                 }
3117         }
3118
3119         cairo_destroy(cr);
3120 }
3121
3122 void
3123 window_show_menu(struct display *display,
3124                  struct input *input, uint32_t time, struct window *parent,
3125                  int32_t x, int32_t y,
3126                  menu_func_t func, const char **entries, int count)
3127 {
3128         struct window *window;
3129         struct menu *menu;
3130         const int32_t margin = 3;
3131
3132         menu = malloc(sizeof *menu);
3133         if (!menu)
3134                 return;
3135
3136         window = window_create_internal(parent->display, parent, TYPE_MENU);
3137         if (!window) {
3138                 free(menu);
3139                 return;
3140         }
3141
3142         menu->window = window;
3143         menu->widget = window_add_widget(menu->window, menu);
3144         menu->entries = entries;
3145         menu->count = count;
3146         menu->current = -1;
3147         menu->time = time;
3148         menu->func = func;
3149         menu->input = input;
3150         window->type = TYPE_MENU;
3151         window->x = x;
3152         window->y = y;
3153
3154         input_ungrab(input);
3155         wl_shell_surface_set_popup(window->shell_surface, input->seat,
3156                                    display_get_serial(window->display),
3157                                    window->parent->surface,
3158                                    window->x, window->y, 0);
3159
3160         widget_set_redraw_handler(menu->widget, menu_redraw_handler);
3161         widget_set_enter_handler(menu->widget, menu_enter_handler);
3162         widget_set_leave_handler(menu->widget, menu_leave_handler);
3163         widget_set_motion_handler(menu->widget, menu_motion_handler);
3164         widget_set_button_handler(menu->widget, menu_button_handler);
3165
3166         input_grab(input, menu->widget, 0);
3167         window_schedule_resize(window, 200, count * 20 + margin * 2);
3168 }
3169
3170 void
3171 window_set_buffer_type(struct window *window, enum window_buffer_type type)
3172 {
3173         window->buffer_type = type;
3174 }
3175
3176
3177 static void
3178 display_handle_geometry(void *data,
3179                         struct wl_output *wl_output,
3180                         int x, int y,
3181                         int physical_width,
3182                         int physical_height,
3183                         int subpixel,
3184                         const char *make,
3185                         const char *model)
3186 {
3187         struct output *output = data;
3188
3189         output->allocation.x = x;
3190         output->allocation.y = y;
3191 }
3192
3193 static void
3194 display_handle_mode(void *data,
3195                     struct wl_output *wl_output,
3196                     uint32_t flags,
3197                     int width,
3198                     int height,
3199                     int refresh)
3200 {
3201         struct output *output = data;
3202         struct display *display = output->display;
3203
3204         if (flags & WL_OUTPUT_MODE_CURRENT) {
3205                 output->allocation.width = width;
3206                 output->allocation.height = height;
3207                 if (display->output_configure_handler)
3208                         (*display->output_configure_handler)(
3209                                                 output, display->user_data);
3210         }
3211 }
3212
3213 static const struct wl_output_listener output_listener = {
3214         display_handle_geometry,
3215         display_handle_mode
3216 };
3217
3218 static void
3219 display_add_output(struct display *d, uint32_t id)
3220 {
3221         struct output *output;
3222
3223         output = malloc(sizeof *output);
3224         if (output == NULL)
3225                 return;
3226
3227         memset(output, 0, sizeof *output);
3228         output->display = d;
3229         output->output =
3230                 wl_display_bind(d->display, id, &wl_output_interface);
3231         wl_list_insert(d->output_list.prev, &output->link);
3232
3233         wl_output_add_listener(output->output, &output_listener, output);
3234 }
3235
3236 static void
3237 output_destroy(struct output *output)
3238 {
3239         if (output->destroy_handler)
3240                 (*output->destroy_handler)(output, output->user_data);
3241
3242         wl_output_destroy(output->output);
3243         wl_list_remove(&output->link);
3244         free(output);
3245 }
3246
3247 void
3248 display_set_output_configure_handler(struct display *display,
3249                                      display_output_handler_t handler)
3250 {
3251         struct output *output;
3252
3253         display->output_configure_handler = handler;
3254         if (!handler)
3255                 return;
3256
3257         wl_list_for_each(output, &display->output_list, link)
3258                 (*display->output_configure_handler)(output,
3259                                                      display->user_data);
3260 }
3261
3262 void
3263 output_set_user_data(struct output *output, void *data)
3264 {
3265         output->user_data = data;
3266 }
3267
3268 void *
3269 output_get_user_data(struct output *output)
3270 {
3271         return output->user_data;
3272 }
3273
3274 void
3275 output_set_destroy_handler(struct output *output,
3276                            display_output_handler_t handler)
3277 {
3278         output->destroy_handler = handler;
3279         /* FIXME: implement this, once we have way to remove outputs */
3280 }
3281
3282 void
3283 output_get_allocation(struct output *output, struct rectangle *allocation)
3284 {
3285         *allocation = output->allocation;
3286 }
3287
3288 struct wl_output *
3289 output_get_wl_output(struct output *output)
3290 {
3291         return output->output;
3292 }
3293
3294 static void
3295 fini_xkb(struct input *input)
3296 {
3297         xkb_state_unref(input->xkb.state);
3298         xkb_map_unref(input->xkb.keymap);
3299 }
3300
3301 static void
3302 display_add_input(struct display *d, uint32_t id)
3303 {
3304         struct input *input;
3305
3306         input = malloc(sizeof *input);
3307         if (input == NULL)
3308                 return;
3309
3310         memset(input, 0, sizeof *input);
3311         input->display = d;
3312         input->seat = wl_display_bind(d->display, id, &wl_seat_interface);
3313         input->pointer_focus = NULL;
3314         input->keyboard_focus = NULL;
3315         wl_list_insert(d->input_list.prev, &input->link);
3316
3317         wl_seat_add_listener(input->seat, &seat_listener, input);
3318         wl_seat_set_user_data(input->seat, input);
3319
3320         input->data_device =
3321                 wl_data_device_manager_get_data_device(d->data_device_manager,
3322                                                        input->seat);
3323         wl_data_device_add_listener(input->data_device, &data_device_listener,
3324                                     input);
3325
3326         input->pointer_surface = wl_compositor_create_surface(d->compositor);
3327
3328         input->repeat_timer_fd = timerfd_create(CLOCK_MONOTONIC,
3329                                                 TFD_CLOEXEC | TFD_NONBLOCK);
3330         input->repeat_task.run = keyboard_repeat_func;
3331         display_watch_fd(d, input->repeat_timer_fd,
3332                          EPOLLIN, &input->repeat_task);
3333 }
3334
3335 static void
3336 input_destroy(struct input *input)
3337 {
3338         input_remove_keyboard_focus(input);
3339         input_remove_pointer_focus(input);
3340
3341         if (input->xkb.state)
3342                 xkb_state_unref(input->xkb.state);
3343         if (input->xkb.keymap)
3344                 xkb_map_unref(input->xkb.keymap);
3345
3346         if (input->drag_offer)
3347                 data_offer_destroy(input->drag_offer);
3348
3349         if (input->selection_offer)
3350                 data_offer_destroy(input->selection_offer);
3351
3352         wl_data_device_destroy(input->data_device);
3353         fini_xkb(input);
3354
3355         wl_surface_destroy(input->pointer_surface);
3356
3357         wl_list_remove(&input->link);
3358         wl_seat_destroy(input->seat);
3359         close(input->repeat_timer_fd);
3360         free(input);
3361 }
3362
3363 static void
3364 display_handle_global(struct wl_display *display, uint32_t id,
3365                       const char *interface, uint32_t version, void *data)
3366 {
3367         struct display *d = data;
3368
3369         if (strcmp(interface, "wl_compositor") == 0) {
3370                 d->compositor =
3371                         wl_display_bind(display, id, &wl_compositor_interface);
3372         } else if (strcmp(interface, "wl_output") == 0) {
3373                 display_add_output(d, id);
3374         } else if (strcmp(interface, "wl_seat") == 0) {
3375                 display_add_input(d, id);
3376         } else if (strcmp(interface, "wl_shell") == 0) {
3377                 d->shell = wl_display_bind(display, id, &wl_shell_interface);
3378         } else if (strcmp(interface, "wl_shm") == 0) {
3379                 d->shm = wl_display_bind(display, id, &wl_shm_interface);
3380         } else if (strcmp(interface, "wl_data_device_manager") == 0) {
3381                 d->data_device_manager =
3382                         wl_display_bind(display, id,
3383                                         &wl_data_device_manager_interface);
3384         } else if (strcmp(interface, "text_cursor_position") == 0) {
3385                 d->text_cursor_position =
3386                         wl_display_bind(display, id,
3387                                         &text_cursor_position_interface);
3388         }
3389 }
3390
3391 #ifdef HAVE_CAIRO_EGL
3392 static int
3393 init_egl(struct display *d)
3394 {
3395         EGLint major, minor;
3396         EGLint n;
3397
3398 #ifdef USE_CAIRO_GLESV2
3399 #  define GL_BIT EGL_OPENGL_ES2_BIT
3400 #else
3401 #  define GL_BIT EGL_OPENGL_BIT
3402 #endif
3403
3404         static const EGLint argb_cfg_attribs[] = {
3405                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT | EGL_PIXMAP_BIT,
3406                 EGL_RED_SIZE, 1,
3407                 EGL_GREEN_SIZE, 1,
3408                 EGL_BLUE_SIZE, 1,
3409                 EGL_ALPHA_SIZE, 1,
3410                 EGL_DEPTH_SIZE, 1,
3411                 EGL_RENDERABLE_TYPE, GL_BIT,
3412                 EGL_NONE
3413         };
3414
3415 #ifdef USE_CAIRO_GLESV2
3416         static const EGLint context_attribs[] = {
3417                 EGL_CONTEXT_CLIENT_VERSION, 2,
3418                 EGL_NONE
3419         };
3420         EGLint api = EGL_OPENGL_ES_API;
3421 #else
3422         EGLint *context_attribs = NULL;
3423         EGLint api = EGL_OPENGL_API;
3424 #endif
3425
3426         d->dpy = eglGetDisplay(d->display);
3427         if (!eglInitialize(d->dpy, &major, &minor)) {
3428                 fprintf(stderr, "failed to initialize display\n");
3429                 return -1;
3430         }
3431
3432         if (!eglBindAPI(api)) {
3433                 fprintf(stderr, "failed to bind api EGL_OPENGL_API\n");
3434                 return -1;
3435         }
3436
3437         if (!eglChooseConfig(d->dpy, argb_cfg_attribs,
3438                              &d->argb_config, 1, &n) || n != 1) {
3439                 fprintf(stderr, "failed to choose argb config\n");
3440                 return -1;
3441         }
3442
3443         d->argb_ctx = eglCreateContext(d->dpy, d->argb_config,
3444                                        EGL_NO_CONTEXT, context_attribs);
3445         if (d->argb_ctx == NULL) {
3446                 fprintf(stderr, "failed to create context\n");
3447                 return -1;
3448         }
3449
3450         if (!eglMakeCurrent(d->dpy, NULL, NULL, d->argb_ctx)) {
3451                 fprintf(stderr, "failed to make context current\n");
3452                 return -1;
3453         }
3454
3455 #ifdef HAVE_CAIRO_EGL
3456         d->argb_device = cairo_egl_device_create(d->dpy, d->argb_ctx);
3457         if (cairo_device_status(d->argb_device) != CAIRO_STATUS_SUCCESS) {
3458                 fprintf(stderr, "failed to get cairo egl argb device\n");
3459                 return -1;
3460         }
3461 #endif
3462
3463         return 0;
3464 }
3465
3466 static void
3467 fini_egl(struct display *display)
3468 {
3469 #ifdef HAVE_CAIRO_EGL
3470         cairo_device_destroy(display->argb_device);
3471 #endif
3472
3473         eglMakeCurrent(display->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE,
3474                        EGL_NO_CONTEXT);
3475
3476         eglTerminate(display->dpy);
3477         eglReleaseThread();
3478 }
3479 #endif
3480
3481 static int
3482 event_mask_update(uint32_t mask, void *data)
3483 {
3484         struct display *d = data;
3485
3486         d->mask = mask;
3487
3488         return 0;
3489 }
3490
3491 static void
3492 handle_display_data(struct task *task, uint32_t events)
3493 {
3494         struct display *display =
3495                 container_of(task, struct display, display_task);
3496
3497         wl_display_iterate(display->display, display->mask);
3498 }
3499
3500 struct display *
3501 display_create(int argc, char *argv[])
3502 {
3503         struct display *d;
3504
3505         argc = parse_options(xkb_options,
3506                              ARRAY_LENGTH(xkb_options), argc, argv);
3507
3508         d = malloc(sizeof *d);
3509         if (d == NULL)
3510                 return NULL;
3511
3512         memset(d, 0, sizeof *d);
3513
3514         d->display = wl_display_connect(NULL);
3515         if (d->display == NULL) {
3516                 fprintf(stderr, "failed to create display: %m\n");
3517                 return NULL;
3518         }
3519
3520         d->epoll_fd = os_epoll_create_cloexec();
3521         d->display_fd = wl_display_get_fd(d->display, event_mask_update, d);
3522         d->display_task.run = handle_display_data;
3523         display_watch_fd(d, d->display_fd, EPOLLIN, &d->display_task);
3524
3525         wl_list_init(&d->deferred_list);
3526         wl_list_init(&d->input_list);
3527         wl_list_init(&d->output_list);
3528
3529         d->xkb_context = xkb_context_new(0);
3530         if (d->xkb_context == NULL) {
3531                 fprintf(stderr, "Failed to create XKB context\n");
3532                 return NULL;
3533         }
3534
3535         /* Set up listener so we'll catch all events. */
3536         wl_display_add_global_listener(d->display,
3537                                        display_handle_global, d);
3538
3539         /* Process connection events. */
3540         wl_display_iterate(d->display, WL_DISPLAY_READABLE);
3541 #ifdef HAVE_CAIRO_EGL
3542         if (init_egl(d) < 0)
3543                 return NULL;
3544 #endif
3545
3546         d->image_target_texture_2d =
3547                 (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
3548         d->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
3549         d->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
3550
3551         create_cursors(d);
3552
3553         d->theme = theme_create();
3554
3555         wl_list_init(&d->window_list);
3556
3557         return d;
3558 }
3559
3560 static void
3561 display_destroy_outputs(struct display *display)
3562 {
3563         struct output *tmp;
3564         struct output *output;
3565
3566         wl_list_for_each_safe(output, tmp, &display->output_list, link)
3567                 output_destroy(output);
3568 }
3569
3570 static void
3571 display_destroy_inputs(struct display *display)
3572 {
3573         struct input *tmp;
3574         struct input *input;
3575
3576         wl_list_for_each_safe(input, tmp, &display->input_list, link)
3577                 input_destroy(input);
3578 }
3579
3580 void
3581 display_destroy(struct display *display)
3582 {
3583         if (!wl_list_empty(&display->window_list))
3584                 fprintf(stderr, "toytoolkit warning: windows exist.\n");
3585
3586         if (!wl_list_empty(&display->deferred_list))
3587                 fprintf(stderr, "toytoolkit warning: deferred tasks exist.\n");
3588
3589         display_destroy_outputs(display);
3590         display_destroy_inputs(display);
3591
3592         xkb_context_unref(display->xkb_context);
3593
3594         theme_destroy(display->theme);
3595         destroy_cursors(display);
3596
3597 #ifdef HAVE_CAIRO_EGL
3598         fini_egl(display);
3599 #endif
3600
3601         if (display->shell)
3602                 wl_shell_destroy(display->shell);
3603
3604         if (display->shm)
3605                 wl_shm_destroy(display->shm);
3606
3607         if (display->data_device_manager)
3608                 wl_data_device_manager_destroy(display->data_device_manager);
3609
3610         wl_compositor_destroy(display->compositor);
3611
3612         close(display->epoll_fd);
3613
3614         wl_display_flush(display->display);
3615         wl_display_disconnect(display->display);
3616         free(display);
3617 }
3618
3619 void
3620 display_set_user_data(struct display *display, void *data)
3621 {
3622         display->user_data = data;
3623 }
3624
3625 void *
3626 display_get_user_data(struct display *display)
3627 {
3628         return display->user_data;
3629 }
3630
3631 struct wl_display *
3632 display_get_display(struct display *display)
3633 {
3634         return display->display;
3635 }
3636
3637 struct output *
3638 display_get_output(struct display *display)
3639 {
3640         return container_of(display->output_list.next, struct output, link);
3641 }
3642
3643 struct wl_compositor *
3644 display_get_compositor(struct display *display)
3645 {
3646         return display->compositor;
3647 }
3648
3649 uint32_t
3650 display_get_serial(struct display *display)
3651 {
3652         return display->serial;
3653 }
3654
3655 EGLDisplay
3656 display_get_egl_display(struct display *d)
3657 {
3658         return d->dpy;
3659 }
3660
3661 struct wl_data_source *
3662 display_create_data_source(struct display *display)
3663 {
3664         return wl_data_device_manager_create_data_source(display->data_device_manager);
3665 }
3666
3667 EGLConfig
3668 display_get_argb_egl_config(struct display *d)
3669 {
3670         return d->argb_config;
3671 }
3672
3673 struct wl_shell *
3674 display_get_shell(struct display *display)
3675 {
3676         return display->shell;
3677 }
3678
3679 int
3680 display_acquire_window_surface(struct display *display,
3681                                struct window *window,
3682                                EGLContext ctx)
3683 {
3684 #ifdef HAVE_CAIRO_EGL
3685         struct egl_window_surface_data *data;
3686         cairo_device_t *device;
3687
3688         if (!window->cairo_surface)
3689                 return -1;
3690         device = cairo_surface_get_device(window->cairo_surface);
3691         if (!device)
3692                 return -1;
3693
3694         if (!ctx) {
3695                 if (device == display->argb_device)
3696                         ctx = display->argb_ctx;
3697                 else
3698                         assert(0);
3699         }
3700
3701         data = cairo_surface_get_user_data(window->cairo_surface,
3702                                            &surface_data_key);
3703
3704         cairo_device_flush(device);
3705         cairo_device_acquire(device);
3706         if (!eglMakeCurrent(display->dpy, data->surf, data->surf, ctx))
3707                 fprintf(stderr, "failed to make surface current\n");
3708
3709         return 0;
3710 #else
3711         return -1;
3712 #endif
3713 }
3714
3715 void
3716 display_release_window_surface(struct display *display,
3717                                struct window *window)
3718 {
3719 #ifdef HAVE_CAIRO_EGL
3720         cairo_device_t *device;
3721
3722         device = cairo_surface_get_device(window->cairo_surface);
3723         if (!device)
3724                 return;
3725
3726         if (!eglMakeCurrent(display->dpy, NULL, NULL, display->argb_ctx))
3727                 fprintf(stderr, "failed to make context current\n");
3728         cairo_device_release(device);
3729 #endif
3730 }
3731
3732 void
3733 display_defer(struct display *display, struct task *task)
3734 {
3735         wl_list_insert(&display->deferred_list, &task->link);
3736 }
3737
3738 void
3739 display_watch_fd(struct display *display,
3740                  int fd, uint32_t events, struct task *task)
3741 {
3742         struct epoll_event ep;
3743
3744         ep.events = events;
3745         ep.data.ptr = task;
3746         epoll_ctl(display->epoll_fd, EPOLL_CTL_ADD, fd, &ep);
3747 }
3748
3749 void
3750 display_run(struct display *display)
3751 {
3752         struct task *task;
3753         struct epoll_event ep[16];
3754         int i, count;
3755
3756         display->running = 1;
3757         while (1) {
3758                 wl_display_flush(display->display);
3759
3760                 while (!wl_list_empty(&display->deferred_list)) {
3761                         task = container_of(display->deferred_list.next,
3762                                             struct task, link);
3763                         wl_list_remove(&task->link);
3764                         task->run(task, 0);
3765                 }
3766
3767                 if (!display->running)
3768                         break;
3769
3770                 wl_display_flush(display->display);
3771
3772                 count = epoll_wait(display->epoll_fd,
3773                                    ep, ARRAY_LENGTH(ep), -1);
3774                 for (i = 0; i < count; i++) {
3775                         task = ep[i].data.ptr;
3776                         task->run(task, ep[i].events);
3777                 }
3778         }
3779 }
3780
3781 void
3782 display_exit(struct display *display)
3783 {
3784         display->running = 0;
3785 }