git.sesse.net Git - pistorm/blob - raylib_pi4_test/external/glfw/src/wl_window.c

   1 //========================================================================
   2 // GLFW 3.4 Wayland - www.glfw.org
   3 //------------------------------------------------------------------------
   4 // Copyright (c) 2014 Jonas Ådahl <jadahl@gmail.com>
   5 //
   6 // This software is provided 'as-is', without any express or implied
   7 // warranty. In no event will the authors be held liable for any damages
   8 // arising from the use of this software.
   9 //
  10 // Permission is granted to anyone to use this software for any purpose,
  11 // including commercial applications, and to alter it and redistribute it
  12 // freely, subject to the following restrictions:
  13 //
  14 // 1. The origin of this software must not be misrepresented; you must not
  15 //    claim that you wrote the original software. If you use this software
  16 //    in a product, an acknowledgment in the product documentation would
  17 //    be appreciated but is not required.
  18 //
  19 // 2. Altered source versions must be plainly marked as such, and must not
  20 //    be misrepresented as being the original software.
  21 //
  22 // 3. This notice may not be removed or altered from any source
  23 //    distribution.
  24 //
  25 //========================================================================
  26 // It is fine to use C99 in this file because it will not be built with VS
  27 //========================================================================
  28
  29 #define _GNU_SOURCE
  30
  31 #include "internal.h"
  32
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <errno.h>
  36 #include <unistd.h>
  37 #include <string.h>
  38 #include <fcntl.h>
  39 #include <sys/mman.h>
  40 #include <sys/timerfd.h>
  41 #include <poll.h>
  42
  43
  44 static int createTmpfileCloexec(char* tmpname)
  45 {
  46     int fd;
  47
  48     fd = mkostemp(tmpname, O_CLOEXEC);
  49     if (fd >= 0)
  50         unlink(tmpname);
  51
  52     return fd;
  53 }
  54
  55 /*
  56  * Create a new, unique, anonymous file of the given size, and
  57  * return the file descriptor for it. The file descriptor is set
  58  * CLOEXEC. The file is immediately suitable for mmap()'ing
  59  * the given size at offset zero.
  60  *
  61  * The file should not have a permanent backing store like a disk,
  62  * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
  63  *
  64  * The file name is deleted from the file system.
  65  *
  66  * The file is suitable for buffer sharing between processes by
  67  * transmitting the file descriptor over Unix sockets using the
  68  * SCM_RIGHTS methods.
  69  *
  70  * posix_fallocate() is used to guarantee that disk space is available
  71  * for the file at the given size. If disk space is insufficient, errno
  72  * is set to ENOSPC. If posix_fallocate() is not supported, program may
  73  * receive SIGBUS on accessing mmap()'ed file contents instead.
  74  */
  75 static int createAnonymousFile(off_t size)
  76 {
  77     static const char template[] = "/glfw-shared-XXXXXX";
  78     const char* path;
  79     char* name;
  80     int fd;
  81     int ret;
  82
  83 #ifdef HAVE_MEMFD_CREATE
  84     fd = memfd_create("glfw-shared", MFD_CLOEXEC | MFD_ALLOW_SEALING);
  85     if (fd >= 0)
  86     {
  87         // We can add this seal before calling posix_fallocate(), as the file
  88         // is currently zero-sized anyway.
  89         //
  90         // There is also no need to check for the return value, we couldn’t do
  91         // anything with it anyway.
  92         fcntl(fd, F_ADD_SEALS, F_SEAL_SHRINK | F_SEAL_SEAL);
  93     }
  94     else
  95 #elif defined(SHM_ANON)
  96     fd = shm_open(SHM_ANON, O_RDWR | O_CLOEXEC, 0600);
  97     if (fd < 0)
  98 #endif
  99     {
 100         path = getenv("XDG_RUNTIME_DIR");
 101         if (!path)
 102         {
 103             errno = ENOENT;
 104             return -1;
 105         }
 106
 107         name = calloc(strlen(path) + sizeof(template), 1);
 108         strcpy(name, path);
 109         strcat(name, template);
 110
 111         fd = createTmpfileCloexec(name);
 112         free(name);
 113         if (fd < 0)
 114             return -1;
 115     }
 116
 117 #if defined(SHM_ANON)
 118     // posix_fallocate does not work on SHM descriptors
 119     ret = ftruncate(fd, size);
 120 #else
 121     ret = posix_fallocate(fd, 0, size);
 122 #endif
 123     if (ret != 0)
 124     {
 125         close(fd);
 126         errno = ret;
 127         return -1;
 128     }
 129     return fd;
 130 }
 131
 132 static struct wl_buffer* createShmBuffer(const GLFWimage* image)
 133 {
 134     struct wl_shm_pool* pool;
 135     struct wl_buffer* buffer;
 136     int stride = image->width * 4;
 137     int length = image->width * image->height * 4;
 138     void* data;
 139     int fd, i;
 140
 141     fd = createAnonymousFile(length);
 142     if (fd < 0)
 143     {
 144         _glfwInputError(GLFW_PLATFORM_ERROR,
 145                         "Wayland: Creating a buffer file for %d B failed: %s",
 146                         length, strerror(errno));
 147         return NULL;
 148     }
 149
 150     data = mmap(NULL, length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 151     if (data == MAP_FAILED)
 152     {
 153         _glfwInputError(GLFW_PLATFORM_ERROR,
 154                         "Wayland: mmap failed: %s", strerror(errno));
 155         close(fd);
 156         return NULL;
 157     }
 158
 159     pool = wl_shm_create_pool(_glfw.wl.shm, fd, length);
 160
 161     close(fd);
 162     unsigned char* source = (unsigned char*) image->pixels;
 163     unsigned char* target = data;
 164     for (i = 0;  i < image->width * image->height;  i++, source += 4)
 165     {
 166         unsigned int alpha = source[3];
 167
 168         *target++ = (unsigned char) ((source[2] * alpha) / 255);
 169         *target++ = (unsigned char) ((source[1] * alpha) / 255);
 170         *target++ = (unsigned char) ((source[0] * alpha) / 255);
 171         *target++ = (unsigned char) alpha;
 172     }
 173
 174     buffer =
 175         wl_shm_pool_create_buffer(pool, 0,
 176                                   image->width,
 177                                   image->height,
 178                                   stride, WL_SHM_FORMAT_ARGB8888);
 179     munmap(data, length);
 180     wl_shm_pool_destroy(pool);
 181
 182     return buffer;
 183 }
 184
 185 static void createDecoration(_GLFWdecorationWayland* decoration,
 186                              struct wl_surface* parent,
 187                              struct wl_buffer* buffer, GLFWbool opaque,
 188                              int x, int y,
 189                              int width, int height)
 190 {
 191     struct wl_region* region;
 192
 193     decoration->surface = wl_compositor_create_surface(_glfw.wl.compositor);
 194     decoration->subsurface =
 195         wl_subcompositor_get_subsurface(_glfw.wl.subcompositor,
 196                                         decoration->surface, parent);
 197     wl_subsurface_set_position(decoration->subsurface, x, y);
 198     decoration->viewport = wp_viewporter_get_viewport(_glfw.wl.viewporter,
 199                                                       decoration->surface);
 200     wp_viewport_set_destination(decoration->viewport, width, height);
 201     wl_surface_attach(decoration->surface, buffer, 0, 0);
 202
 203     if (opaque)
 204     {
 205         region = wl_compositor_create_region(_glfw.wl.compositor);
 206         wl_region_add(region, 0, 0, width, height);
 207         wl_surface_set_opaque_region(decoration->surface, region);
 208         wl_surface_commit(decoration->surface);
 209         wl_region_destroy(region);
 210     }
 211     else
 212         wl_surface_commit(decoration->surface);
 213 }
 214
 215 static void createDecorations(_GLFWwindow* window)
 216 {
 217     unsigned char data[] = { 224, 224, 224, 255 };
 218     const GLFWimage image = { 1, 1, data };
 219     GLFWbool opaque = (data[3] == 255);
 220
 221     if (!_glfw.wl.viewporter || !window->decorated || window->wl.decorations.serverSide)
 222         return;
 223
 224     if (!window->wl.decorations.buffer)
 225         window->wl.decorations.buffer = createShmBuffer(&image);
 226     if (!window->wl.decorations.buffer)
 227         return;
 228
 229     createDecoration(&window->wl.decorations.top, window->wl.surface,
 230                      window->wl.decorations.buffer, opaque,
 231                      0, -_GLFW_DECORATION_TOP,
 232                      window->wl.width, _GLFW_DECORATION_TOP);
 233     createDecoration(&window->wl.decorations.left, window->wl.surface,
 234                      window->wl.decorations.buffer, opaque,
 235                      -_GLFW_DECORATION_WIDTH, -_GLFW_DECORATION_TOP,
 236                      _GLFW_DECORATION_WIDTH, window->wl.height + _GLFW_DECORATION_TOP);
 237     createDecoration(&window->wl.decorations.right, window->wl.surface,
 238                      window->wl.decorations.buffer, opaque,
 239                      window->wl.width, -_GLFW_DECORATION_TOP,
 240                      _GLFW_DECORATION_WIDTH, window->wl.height + _GLFW_DECORATION_TOP);
 241     createDecoration(&window->wl.decorations.bottom, window->wl.surface,
 242                      window->wl.decorations.buffer, opaque,
 243                      -_GLFW_DECORATION_WIDTH, window->wl.height,
 244                      window->wl.width + _GLFW_DECORATION_HORIZONTAL, _GLFW_DECORATION_WIDTH);
 245 }
 246
 247 static void destroyDecoration(_GLFWdecorationWayland* decoration)
 248 {
 249     if (decoration->surface)
 250         wl_surface_destroy(decoration->surface);
 251     if (decoration->subsurface)
 252         wl_subsurface_destroy(decoration->subsurface);
 253     if (decoration->viewport)
 254         wp_viewport_destroy(decoration->viewport);
 255     decoration->surface = NULL;
 256     decoration->subsurface = NULL;
 257     decoration->viewport = NULL;
 258 }
 259
 260 static void destroyDecorations(_GLFWwindow* window)
 261 {
 262     destroyDecoration(&window->wl.decorations.top);
 263     destroyDecoration(&window->wl.decorations.left);
 264     destroyDecoration(&window->wl.decorations.right);
 265     destroyDecoration(&window->wl.decorations.bottom);
 266 }
 267
 268 static void xdgDecorationHandleConfigure(void* data,
 269                                          struct zxdg_toplevel_decoration_v1* decoration,
 270                                          uint32_t mode)
 271 {
 272     _GLFWwindow* window = data;
 273
 274     window->wl.decorations.serverSide = (mode == ZXDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE);
 275
 276     if (!window->wl.decorations.serverSide)
 277         createDecorations(window);
 278 }
 279
 280 static const struct zxdg_toplevel_decoration_v1_listener xdgDecorationListener = {
 281     xdgDecorationHandleConfigure,
 282 };
 283
 284 // Makes the surface considered as XRGB instead of ARGB.
 285 static void setOpaqueRegion(_GLFWwindow* window)
 286 {
 287     struct wl_region* region;
 288
 289     region = wl_compositor_create_region(_glfw.wl.compositor);
 290     if (!region)
 291         return;
 292
 293     wl_region_add(region, 0, 0, window->wl.width, window->wl.height);
 294     wl_surface_set_opaque_region(window->wl.surface, region);
 295     wl_surface_commit(window->wl.surface);
 296     wl_region_destroy(region);
 297 }
 298
 299
 300 static void resizeWindow(_GLFWwindow* window)
 301 {
 302     int scale = window->wl.scale;
 303     int scaledWidth = window->wl.width * scale;
 304     int scaledHeight = window->wl.height * scale;
 305     wl_egl_window_resize(window->wl.native, scaledWidth, scaledHeight, 0, 0);
 306     if (!window->wl.transparent)
 307         setOpaqueRegion(window);
 308     _glfwInputFramebufferSize(window, scaledWidth, scaledHeight);
 309     _glfwInputWindowContentScale(window, scale, scale);
 310
 311     if (!window->wl.decorations.top.surface)
 312         return;
 313
 314     // Top decoration.
 315     wp_viewport_set_destination(window->wl.decorations.top.viewport,
 316                                 window->wl.width, _GLFW_DECORATION_TOP);
 317     wl_surface_commit(window->wl.decorations.top.surface);
 318
 319     // Left decoration.
 320     wp_viewport_set_destination(window->wl.decorations.left.viewport,
 321                                 _GLFW_DECORATION_WIDTH, window->wl.height + _GLFW_DECORATION_TOP);
 322     wl_surface_commit(window->wl.decorations.left.surface);
 323
 324     // Right decoration.
 325     wl_subsurface_set_position(window->wl.decorations.right.subsurface,
 326                                window->wl.width, -_GLFW_DECORATION_TOP);
 327     wp_viewport_set_destination(window->wl.decorations.right.viewport,
 328                                 _GLFW_DECORATION_WIDTH, window->wl.height + _GLFW_DECORATION_TOP);
 329     wl_surface_commit(window->wl.decorations.right.surface);
 330
 331     // Bottom decoration.
 332     wl_subsurface_set_position(window->wl.decorations.bottom.subsurface,
 333                                -_GLFW_DECORATION_WIDTH, window->wl.height);
 334     wp_viewport_set_destination(window->wl.decorations.bottom.viewport,
 335                                 window->wl.width + _GLFW_DECORATION_HORIZONTAL, _GLFW_DECORATION_WIDTH);
 336     wl_surface_commit(window->wl.decorations.bottom.surface);
 337 }
 338
 339 static void checkScaleChange(_GLFWwindow* window)
 340 {
 341     int scale = 1;
 342     int i;
 343     int monitorScale;
 344
 345     // Check if we will be able to set the buffer scale or not.
 346     if (_glfw.wl.compositorVersion < 3)
 347         return;
 348
 349     // Get the scale factor from the highest scale monitor.
 350     for (i = 0; i < window->wl.monitorsCount; ++i)
 351     {
 352         monitorScale = window->wl.monitors[i]->wl.scale;
 353         if (scale < monitorScale)
 354             scale = monitorScale;
 355     }
 356
 357     // Only change the framebuffer size if the scale changed.
 358     if (scale != window->wl.scale)
 359     {
 360         window->wl.scale = scale;
 361         wl_surface_set_buffer_scale(window->wl.surface, scale);
 362         resizeWindow(window);
 363     }
 364 }
 365
 366 static void surfaceHandleEnter(void *data,
 367                                struct wl_surface *surface,
 368                                struct wl_output *output)
 369 {
 370     _GLFWwindow* window = data;
 371     _GLFWmonitor* monitor = wl_output_get_user_data(output);
 372
 373     if (window->wl.monitorsCount + 1 > window->wl.monitorsSize)
 374     {
 375         ++window->wl.monitorsSize;
 376         window->wl.monitors =
 377             realloc(window->wl.monitors,
 378                     window->wl.monitorsSize * sizeof(_GLFWmonitor*));
 379     }
 380
 381     window->wl.monitors[window->wl.monitorsCount++] = monitor;
 382
 383     checkScaleChange(window);
 384 }
 385
 386 static void surfaceHandleLeave(void *data,
 387                                struct wl_surface *surface,
 388                                struct wl_output *output)
 389 {
 390     _GLFWwindow* window = data;
 391     _GLFWmonitor* monitor = wl_output_get_user_data(output);
 392     GLFWbool found;
 393     int i;
 394
 395     for (i = 0, found = GLFW_FALSE; i < window->wl.monitorsCount - 1; ++i)
 396     {
 397         if (monitor == window->wl.monitors[i])
 398             found = GLFW_TRUE;
 399         if (found)
 400             window->wl.monitors[i] = window->wl.monitors[i + 1];
 401     }
 402     window->wl.monitors[--window->wl.monitorsCount] = NULL;
 403
 404     checkScaleChange(window);
 405 }
 406
 407 static const struct wl_surface_listener surfaceListener = {
 408     surfaceHandleEnter,
 409     surfaceHandleLeave
 410 };
 411
 412 static void setIdleInhibitor(_GLFWwindow* window, GLFWbool enable)
 413 {
 414     if (enable && !window->wl.idleInhibitor && _glfw.wl.idleInhibitManager)
 415     {
 416         window->wl.idleInhibitor =
 417             zwp_idle_inhibit_manager_v1_create_inhibitor(
 418                 _glfw.wl.idleInhibitManager, window->wl.surface);
 419         if (!window->wl.idleInhibitor)
 420             _glfwInputError(GLFW_PLATFORM_ERROR,
 421                             "Wayland: Idle inhibitor creation failed");
 422     }
 423     else if (!enable && window->wl.idleInhibitor)
 424     {
 425         zwp_idle_inhibitor_v1_destroy(window->wl.idleInhibitor);
 426         window->wl.idleInhibitor = NULL;
 427     }
 428 }
 429
 430 static GLFWbool createSurface(_GLFWwindow* window,
 431                               const _GLFWwndconfig* wndconfig)
 432 {
 433     window->wl.surface = wl_compositor_create_surface(_glfw.wl.compositor);
 434     if (!window->wl.surface)
 435         return GLFW_FALSE;
 436
 437     wl_surface_add_listener(window->wl.surface,
 438                             &surfaceListener,
 439                             window);
 440
 441     wl_surface_set_user_data(window->wl.surface, window);
 442
 443     window->wl.native = wl_egl_window_create(window->wl.surface,
 444                                              wndconfig->width,
 445                                              wndconfig->height);
 446     if (!window->wl.native)
 447         return GLFW_FALSE;
 448
 449     window->wl.width = wndconfig->width;
 450     window->wl.height = wndconfig->height;
 451     window->wl.scale = 1;
 452
 453     if (!window->wl.transparent)
 454         setOpaqueRegion(window);
 455
 456     return GLFW_TRUE;
 457 }
 458
 459 static void setFullscreen(_GLFWwindow* window, _GLFWmonitor* monitor,
 460                           int refreshRate)
 461 {
 462     if (window->wl.xdg.toplevel)
 463     {
 464         xdg_toplevel_set_fullscreen(
 465             window->wl.xdg.toplevel,
 466             monitor->wl.output);
 467     }
 468     setIdleInhibitor(window, GLFW_TRUE);
 469     if (!window->wl.decorations.serverSide)
 470         destroyDecorations(window);
 471 }
 472
 473 static void xdgToplevelHandleConfigure(void* data,
 474                                        struct xdg_toplevel* toplevel,
 475                                        int32_t width,
 476                                        int32_t height,
 477                                        struct wl_array* states)
 478 {
 479     _GLFWwindow* window = data;
 480     float aspectRatio;
 481     float targetRatio;
 482     uint32_t* state;
 483     GLFWbool maximized = GLFW_FALSE;
 484     GLFWbool fullscreen = GLFW_FALSE;
 485     GLFWbool activated = GLFW_FALSE;
 486
 487     wl_array_for_each(state, states)
 488     {
 489         switch (*state)
 490         {
 491             case XDG_TOPLEVEL_STATE_MAXIMIZED:
 492                 maximized = GLFW_TRUE;
 493                 break;
 494             case XDG_TOPLEVEL_STATE_FULLSCREEN:
 495                 fullscreen = GLFW_TRUE;
 496                 break;
 497             case XDG_TOPLEVEL_STATE_RESIZING:
 498                 break;
 499             case XDG_TOPLEVEL_STATE_ACTIVATED:
 500                 activated = GLFW_TRUE;
 501                 break;
 502         }
 503     }
 504
 505     if (width != 0 && height != 0)
 506     {
 507         if (!maximized && !fullscreen)
 508         {
 509             if (window->numer != GLFW_DONT_CARE && window->denom != GLFW_DONT_CARE)
 510             {
 511                 aspectRatio = (float)width / (float)height;
 512                 targetRatio = (float)window->numer / (float)window->denom;
 513                 if (aspectRatio < targetRatio)
 514                     height = width / targetRatio;
 515                 else if (aspectRatio > targetRatio)
 516                     width = height * targetRatio;
 517             }
 518         }
 519
 520         _glfwInputWindowSize(window, width, height);
 521         _glfwPlatformSetWindowSize(window, width, height);
 522         _glfwInputWindowDamage(window);
 523     }
 524
 525     if (window->wl.wasFullscreen && window->autoIconify)
 526     {
 527         if (!activated || !fullscreen)
 528         {
 529             _glfwPlatformIconifyWindow(window);
 530             window->wl.wasFullscreen = GLFW_FALSE;
 531         }
 532     }
 533     if (fullscreen && activated)
 534         window->wl.wasFullscreen = GLFW_TRUE;
 535     _glfwInputWindowFocus(window, activated);
 536 }
 537
 538 static void xdgToplevelHandleClose(void* data,
 539                                    struct xdg_toplevel* toplevel)
 540 {
 541     _GLFWwindow* window = data;
 542     _glfwInputWindowCloseRequest(window);
 543 }
 544
 545 static const struct xdg_toplevel_listener xdgToplevelListener = {
 546     xdgToplevelHandleConfigure,
 547     xdgToplevelHandleClose
 548 };
 549
 550 static void xdgSurfaceHandleConfigure(void* data,
 551                                       struct xdg_surface* surface,
 552                                       uint32_t serial)
 553 {
 554     xdg_surface_ack_configure(surface, serial);
 555 }
 556
 557 static const struct xdg_surface_listener xdgSurfaceListener = {
 558     xdgSurfaceHandleConfigure
 559 };
 560
 561 static void setXdgDecorations(_GLFWwindow* window)
 562 {
 563     if (_glfw.wl.decorationManager)
 564     {
 565         window->wl.xdg.decoration =
 566             zxdg_decoration_manager_v1_get_toplevel_decoration(
 567                 _glfw.wl.decorationManager, window->wl.xdg.toplevel);
 568         zxdg_toplevel_decoration_v1_add_listener(window->wl.xdg.decoration,
 569                                                  &xdgDecorationListener,
 570                                                  window);
 571         zxdg_toplevel_decoration_v1_set_mode(
 572             window->wl.xdg.decoration,
 573             ZXDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE);
 574     }
 575     else
 576     {
 577         window->wl.decorations.serverSide = GLFW_FALSE;
 578         createDecorations(window);
 579     }
 580 }
 581
 582 static GLFWbool createXdgSurface(_GLFWwindow* window)
 583 {
 584     window->wl.xdg.surface = xdg_wm_base_get_xdg_surface(_glfw.wl.wmBase,
 585                                                          window->wl.surface);
 586     if (!window->wl.xdg.surface)
 587     {
 588         _glfwInputError(GLFW_PLATFORM_ERROR,
 589                         "Wayland: xdg-surface creation failed");
 590         return GLFW_FALSE;
 591     }
 592
 593     xdg_surface_add_listener(window->wl.xdg.surface,
 594                              &xdgSurfaceListener,
 595                              window);
 596
 597     window->wl.xdg.toplevel = xdg_surface_get_toplevel(window->wl.xdg.surface);
 598     if (!window->wl.xdg.toplevel)
 599     {
 600         _glfwInputError(GLFW_PLATFORM_ERROR,
 601                         "Wayland: xdg-toplevel creation failed");
 602         return GLFW_FALSE;
 603     }
 604
 605     xdg_toplevel_add_listener(window->wl.xdg.toplevel,
 606                               &xdgToplevelListener,
 607                               window);
 608
 609     if (window->wl.title)
 610         xdg_toplevel_set_title(window->wl.xdg.toplevel, window->wl.title);
 611
 612     if (window->minwidth != GLFW_DONT_CARE && window->minheight != GLFW_DONT_CARE)
 613         xdg_toplevel_set_min_size(window->wl.xdg.toplevel,
 614                                   window->minwidth, window->minheight);
 615     if (window->maxwidth != GLFW_DONT_CARE && window->maxheight != GLFW_DONT_CARE)
 616         xdg_toplevel_set_max_size(window->wl.xdg.toplevel,
 617                                   window->maxwidth, window->maxheight);
 618
 619     if (window->monitor)
 620     {
 621         xdg_toplevel_set_fullscreen(window->wl.xdg.toplevel,
 622                                     window->monitor->wl.output);
 623         setIdleInhibitor(window, GLFW_TRUE);
 624     }
 625     else if (window->wl.maximized)
 626     {
 627         xdg_toplevel_set_maximized(window->wl.xdg.toplevel);
 628         setIdleInhibitor(window, GLFW_FALSE);
 629         setXdgDecorations(window);
 630     }
 631     else
 632     {
 633         setIdleInhibitor(window, GLFW_FALSE);
 634         setXdgDecorations(window);
 635     }
 636
 637     wl_surface_commit(window->wl.surface);
 638     wl_display_roundtrip(_glfw.wl.display);
 639
 640     return GLFW_TRUE;
 641 }
 642
 643 static void setCursorImage(_GLFWwindow* window,
 644                            _GLFWcursorWayland* cursorWayland)
 645 {
 646     struct itimerspec timer = {};
 647     struct wl_cursor* wlCursor = cursorWayland->cursor;
 648     struct wl_cursor_image* image;
 649     struct wl_buffer* buffer;
 650     struct wl_surface* surface = _glfw.wl.cursorSurface;
 651     int scale = 1;
 652
 653     if (!wlCursor)
 654         buffer = cursorWayland->buffer;
 655     else
 656     {
 657         if (window->wl.scale > 1 && cursorWayland->cursorHiDPI)
 658         {
 659             wlCursor = cursorWayland->cursorHiDPI;
 660             scale = 2;
 661         }
 662
 663         image = wlCursor->images[cursorWayland->currentImage];
 664         buffer = wl_cursor_image_get_buffer(image);
 665         if (!buffer)
 666             return;
 667
 668         timer.it_value.tv_sec = image->delay / 1000;
 669         timer.it_value.tv_nsec = (image->delay % 1000) * 1000000;
 670         timerfd_settime(_glfw.wl.cursorTimerfd, 0, &timer, NULL);
 671
 672         cursorWayland->width = image->width;
 673         cursorWayland->height = image->height;
 674         cursorWayland->xhot = image->hotspot_x;
 675         cursorWayland->yhot = image->hotspot_y;
 676     }
 677
 678     wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.serial,
 679                           surface,
 680                           cursorWayland->xhot / scale,
 681                           cursorWayland->yhot / scale);
 682     wl_surface_set_buffer_scale(surface, scale);
 683     wl_surface_attach(surface, buffer, 0, 0);
 684     wl_surface_damage(surface, 0, 0,
 685                       cursorWayland->width, cursorWayland->height);
 686     wl_surface_commit(surface);
 687 }
 688
 689 static void incrementCursorImage(_GLFWwindow* window)
 690 {
 691     _GLFWcursor* cursor;
 692
 693     if (!window || window->wl.decorations.focus != mainWindow)
 694         return;
 695
 696     cursor = window->wl.currentCursor;
 697     if (cursor && cursor->wl.cursor)
 698     {
 699         cursor->wl.currentImage += 1;
 700         cursor->wl.currentImage %= cursor->wl.cursor->image_count;
 701         setCursorImage(window, &cursor->wl);
 702     }
 703 }
 704
 705 static void handleEvents(int timeout)
 706 {
 707     struct wl_display* display = _glfw.wl.display;
 708     struct pollfd fds[] = {
 709         { wl_display_get_fd(display), POLLIN },
 710         { _glfw.wl.timerfd, POLLIN },
 711         { _glfw.wl.cursorTimerfd, POLLIN },
 712     };
 713     ssize_t read_ret;
 714     uint64_t repeats, i;
 715
 716     while (wl_display_prepare_read(display) != 0)
 717         wl_display_dispatch_pending(display);
 718
 719     // If an error different from EAGAIN happens, we have likely been
 720     // disconnected from the Wayland session, try to handle that the best we
 721     // can.
 722     if (wl_display_flush(display) < 0 && errno != EAGAIN)
 723     {
 724         _GLFWwindow* window = _glfw.windowListHead;
 725         while (window)
 726         {
 727             _glfwInputWindowCloseRequest(window);
 728             window = window->next;
 729         }
 730         wl_display_cancel_read(display);
 731         return;
 732     }
 733
 734     if (poll(fds, 3, timeout) > 0)
 735     {
 736         if (fds[0].revents & POLLIN)
 737         {
 738             wl_display_read_events(display);
 739             wl_display_dispatch_pending(display);
 740         }
 741         else
 742         {
 743             wl_display_cancel_read(display);
 744         }
 745
 746         if (fds[1].revents & POLLIN)
 747         {
 748             read_ret = read(_glfw.wl.timerfd, &repeats, sizeof(repeats));
 749             if (read_ret != 8)
 750                 return;
 751
 752             if (_glfw.wl.keyboardFocus)
 753             {
 754                 for (i = 0; i < repeats; ++i)
 755                 {
 756                     _glfwInputKey(_glfw.wl.keyboardFocus,
 757                                   _glfw.wl.keyboardLastKey,
 758                                   _glfw.wl.keyboardLastScancode,
 759                                   GLFW_REPEAT,
 760                                   _glfw.wl.xkb.modifiers);
 761                 }
 762             }
 763         }
 764
 765         if (fds[2].revents & POLLIN)
 766         {
 767             read_ret = read(_glfw.wl.cursorTimerfd, &repeats, sizeof(repeats));
 768             if (read_ret != 8)
 769                 return;
 770
 771             incrementCursorImage(_glfw.wl.pointerFocus);
 772         }
 773     }
 774     else
 775     {
 776         wl_display_cancel_read(display);
 777     }
 778 }
 779
 780 //////////////////////////////////////////////////////////////////////////
 781 //////                       GLFW platform API                      //////
 782 //////////////////////////////////////////////////////////////////////////
 783
 784 int _glfwPlatformCreateWindow(_GLFWwindow* window,
 785                               const _GLFWwndconfig* wndconfig,
 786                               const _GLFWctxconfig* ctxconfig,
 787                               const _GLFWfbconfig* fbconfig)
 788 {
 789     window->wl.transparent = fbconfig->transparent;
 790
 791     if (!createSurface(window, wndconfig))
 792         return GLFW_FALSE;
 793
 794     if (ctxconfig->client != GLFW_NO_API)
 795     {
 796         if (ctxconfig->source == GLFW_EGL_CONTEXT_API ||
 797             ctxconfig->source == GLFW_NATIVE_CONTEXT_API)
 798         {
 799             if (!_glfwInitEGL())
 800                 return GLFW_FALSE;
 801             if (!_glfwCreateContextEGL(window, ctxconfig, fbconfig))
 802                 return GLFW_FALSE;
 803         }
 804         else if (ctxconfig->source == GLFW_OSMESA_CONTEXT_API)
 805         {
 806             if (!_glfwInitOSMesa())
 807                 return GLFW_FALSE;
 808             if (!_glfwCreateContextOSMesa(window, ctxconfig, fbconfig))
 809                 return GLFW_FALSE;
 810         }
 811     }
 812
 813     if (wndconfig->title)
 814         window->wl.title = _glfw_strdup(wndconfig->title);
 815
 816     if (wndconfig->visible)
 817     {
 818         if (!createXdgSurface(window))
 819             return GLFW_FALSE;
 820
 821         window->wl.visible = GLFW_TRUE;
 822     }
 823     else
 824     {
 825         window->wl.xdg.surface = NULL;
 826         window->wl.xdg.toplevel = NULL;
 827         window->wl.visible = GLFW_FALSE;
 828     }
 829
 830     window->wl.currentCursor = NULL;
 831
 832     window->wl.monitors = calloc(1, sizeof(_GLFWmonitor*));
 833     window->wl.monitorsCount = 0;
 834     window->wl.monitorsSize = 1;
 835
 836     return GLFW_TRUE;
 837 }
 838
 839 void _glfwPlatformDestroyWindow(_GLFWwindow* window)
 840 {
 841     if (window == _glfw.wl.pointerFocus)
 842     {
 843         _glfw.wl.pointerFocus = NULL;
 844         _glfwInputCursorEnter(window, GLFW_FALSE);
 845     }
 846     if (window == _glfw.wl.keyboardFocus)
 847     {
 848         _glfw.wl.keyboardFocus = NULL;
 849         _glfwInputWindowFocus(window, GLFW_FALSE);
 850     }
 851
 852     if (window->wl.idleInhibitor)
 853         zwp_idle_inhibitor_v1_destroy(window->wl.idleInhibitor);
 854
 855     if (window->context.destroy)
 856         window->context.destroy(window);
 857
 858     destroyDecorations(window);
 859     if (window->wl.xdg.decoration)
 860         zxdg_toplevel_decoration_v1_destroy(window->wl.xdg.decoration);
 861
 862     if (window->wl.decorations.buffer)
 863         wl_buffer_destroy(window->wl.decorations.buffer);
 864
 865     if (window->wl.native)
 866         wl_egl_window_destroy(window->wl.native);
 867
 868     if (window->wl.xdg.toplevel)
 869         xdg_toplevel_destroy(window->wl.xdg.toplevel);
 870
 871     if (window->wl.xdg.surface)
 872         xdg_surface_destroy(window->wl.xdg.surface);
 873
 874     if (window->wl.surface)
 875         wl_surface_destroy(window->wl.surface);
 876
 877     free(window->wl.title);
 878     free(window->wl.monitors);
 879 }
 880
 881 void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title)
 882 {
 883     if (window->wl.title)
 884         free(window->wl.title);
 885     window->wl.title = _glfw_strdup(title);
 886     if (window->wl.xdg.toplevel)
 887         xdg_toplevel_set_title(window->wl.xdg.toplevel, title);
 888 }
 889
 890 void _glfwPlatformSetWindowIcon(_GLFWwindow* window,
 891                                 int count, const GLFWimage* images)
 892 {
 893     _glfwInputError(GLFW_FEATURE_UNAVAILABLE,
 894                     "Wayland: The platform does not support setting the window icon");
 895 }
 896
 897 void _glfwPlatformGetWindowPos(_GLFWwindow* window, int* xpos, int* ypos)
 898 {
 899     // A Wayland client is not aware of its position, so just warn and leave it
 900     // as (0, 0)
 901
 902     _glfwInputError(GLFW_FEATURE_UNAVAILABLE,
 903                     "Wayland: The platform does not provide the window position");
 904 }
 905
 906 void _glfwPlatformSetWindowPos(_GLFWwindow* window, int xpos, int ypos)
 907 {
 908     // A Wayland client can not set its position, so just warn
 909
 910     _glfwInputError(GLFW_FEATURE_UNAVAILABLE,
 911                     "Wayland: The platform does not support setting the window position");
 912 }
 913
 914 void _glfwPlatformGetWindowSize(_GLFWwindow* window, int* width, int* height)
 915 {
 916     if (width)
 917         *width = window->wl.width;
 918     if (height)
 919         *height = window->wl.height;
 920 }
 921
 922 void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height)
 923 {
 924     window->wl.width = width;
 925     window->wl.height = height;
 926     resizeWindow(window);
 927 }
 928
 929 void _glfwPlatformSetWindowSizeLimits(_GLFWwindow* window,
 930                                       int minwidth, int minheight,
 931                                       int maxwidth, int maxheight)
 932 {
 933     if (window->wl.xdg.toplevel)
 934     {
 935         if (minwidth == GLFW_DONT_CARE || minheight == GLFW_DONT_CARE)
 936             minwidth = minheight = 0;
 937         if (maxwidth == GLFW_DONT_CARE || maxheight == GLFW_DONT_CARE)
 938             maxwidth = maxheight = 0;
 939         xdg_toplevel_set_min_size(window->wl.xdg.toplevel, minwidth, minheight);
 940         xdg_toplevel_set_max_size(window->wl.xdg.toplevel, maxwidth, maxheight);
 941         wl_surface_commit(window->wl.surface);
 942     }
 943 }
 944
 945 void _glfwPlatformSetWindowAspectRatio(_GLFWwindow* window,
 946                                        int numer, int denom)
 947 {
 948     // TODO: find out how to trigger a resize.
 949     // The actual limits are checked in the xdg_toplevel::configure handler.
 950     _glfwInputError(GLFW_FEATURE_UNIMPLEMENTED,
 951                     "Wayland: Window aspect ratio not yet implemented");
 952 }
 953
 954 void _glfwPlatformGetFramebufferSize(_GLFWwindow* window,
 955                                      int* width, int* height)
 956 {
 957     _glfwPlatformGetWindowSize(window, width, height);
 958     if (width)
 959         *width *= window->wl.scale;
 960     if (height)
 961         *height *= window->wl.scale;
 962 }
 963
 964 void _glfwPlatformGetWindowFrameSize(_GLFWwindow* window,
 965                                      int* left, int* top,
 966                                      int* right, int* bottom)
 967 {
 968     if (window->decorated && !window->monitor && !window->wl.decorations.serverSide)
 969     {
 970         if (top)
 971             *top = _GLFW_DECORATION_TOP;
 972         if (left)
 973             *left = _GLFW_DECORATION_WIDTH;
 974         if (right)
 975             *right = _GLFW_DECORATION_WIDTH;
 976         if (bottom)
 977             *bottom = _GLFW_DECORATION_WIDTH;
 978     }
 979 }
 980
 981 void _glfwPlatformGetWindowContentScale(_GLFWwindow* window,
 982                                         float* xscale, float* yscale)
 983 {
 984     if (xscale)
 985         *xscale = (float) window->wl.scale;
 986     if (yscale)
 987         *yscale = (float) window->wl.scale;
 988 }
 989
 990 void _glfwPlatformIconifyWindow(_GLFWwindow* window)
 991 {
 992     if (window->wl.xdg.toplevel)
 993         xdg_toplevel_set_minimized(window->wl.xdg.toplevel);
 994 }
 995
 996 void _glfwPlatformRestoreWindow(_GLFWwindow* window)
 997 {
 998     if (window->wl.xdg.toplevel)
 999     {
1000         if (window->monitor)
1001             xdg_toplevel_unset_fullscreen(window->wl.xdg.toplevel);
1002         if (window->wl.maximized)
1003             xdg_toplevel_unset_maximized(window->wl.xdg.toplevel);
1004         // There is no way to unset minimized, or even to know if we are
1005         // minimized, so there is nothing to do in this case.
1006     }
1007     _glfwInputWindowMonitor(window, NULL);
1008     window->wl.maximized = GLFW_FALSE;
1009 }
1010
1011 void _glfwPlatformMaximizeWindow(_GLFWwindow* window)
1012 {
1013     if (window->wl.xdg.toplevel)
1014     {
1015         xdg_toplevel_set_maximized(window->wl.xdg.toplevel);
1016     }
1017     window->wl.maximized = GLFW_TRUE;
1018 }
1019
1020 void _glfwPlatformShowWindow(_GLFWwindow* window)
1021 {
1022     if (!window->wl.visible)
1023     {
1024         createXdgSurface(window);
1025         window->wl.visible = GLFW_TRUE;
1026     }
1027 }
1028
1029 void _glfwPlatformHideWindow(_GLFWwindow* window)
1030 {
1031     if (window->wl.xdg.toplevel)
1032     {
1033         xdg_toplevel_destroy(window->wl.xdg.toplevel);
1034         xdg_surface_destroy(window->wl.xdg.surface);
1035         window->wl.xdg.toplevel = NULL;
1036         window->wl.xdg.surface = NULL;
1037     }
1038     window->wl.visible = GLFW_FALSE;
1039 }
1040
1041 void _glfwPlatformRequestWindowAttention(_GLFWwindow* window)
1042 {
1043     // TODO
1044     _glfwInputError(GLFW_FEATURE_UNIMPLEMENTED,
1045                     "Wayland: Window attention request not implemented yet");
1046 }
1047
1048 void _glfwPlatformFocusWindow(_GLFWwindow* window)
1049 {
1050     _glfwInputError(GLFW_FEATURE_UNAVAILABLE,
1051                     "Wayland: The platform does not support setting the input focus");
1052 }
1053
1054 void _glfwPlatformSetWindowMonitor(_GLFWwindow* window,
1055                                    _GLFWmonitor* monitor,
1056                                    int xpos, int ypos,
1057                                    int width, int height,
1058                                    int refreshRate)
1059 {
1060     if (monitor)
1061     {
1062         setFullscreen(window, monitor, refreshRate);
1063     }
1064     else
1065     {
1066         if (window->wl.xdg.toplevel)
1067             xdg_toplevel_unset_fullscreen(window->wl.xdg.toplevel);
1068         setIdleInhibitor(window, GLFW_FALSE);
1069         if (!_glfw.wl.decorationManager)
1070             createDecorations(window);
1071     }
1072     _glfwInputWindowMonitor(window, monitor);
1073 }
1074
1075 int _glfwPlatformWindowFocused(_GLFWwindow* window)
1076 {
1077     return _glfw.wl.keyboardFocus == window;
1078 }
1079
1080 int _glfwPlatformWindowIconified(_GLFWwindow* window)
1081 {
1082     // xdg-shell doesn’t give any way to request whether a surface is
1083     // iconified.
1084     return GLFW_FALSE;
1085 }
1086
1087 int _glfwPlatformWindowVisible(_GLFWwindow* window)
1088 {
1089     return window->wl.visible;
1090 }
1091
1092 int _glfwPlatformWindowMaximized(_GLFWwindow* window)
1093 {
1094     return window->wl.maximized;
1095 }
1096
1097 int _glfwPlatformWindowHovered(_GLFWwindow* window)
1098 {
1099     return window->wl.hovered;
1100 }
1101
1102 int _glfwPlatformFramebufferTransparent(_GLFWwindow* window)
1103 {
1104     return window->wl.transparent;
1105 }
1106
1107 void _glfwPlatformSetWindowResizable(_GLFWwindow* window, GLFWbool enabled)
1108 {
1109     // TODO
1110     _glfwInputError(GLFW_FEATURE_UNIMPLEMENTED,
1111                     "Wayland: Window attribute setting not implemented yet");
1112 }
1113
1114 void _glfwPlatformSetWindowDecorated(_GLFWwindow* window, GLFWbool enabled)
1115 {
1116     if (!window->monitor)
1117     {
1118         if (enabled)
1119             createDecorations(window);
1120         else
1121             destroyDecorations(window);
1122     }
1123 }
1124
1125 void _glfwPlatformSetWindowFloating(_GLFWwindow* window, GLFWbool enabled)
1126 {
1127     // TODO
1128     _glfwInputError(GLFW_FEATURE_UNIMPLEMENTED,
1129                     "Wayland: Window attribute setting not implemented yet");
1130 }
1131
1132 void _glfwPlatformSetWindowMousePassthrough(_GLFWwindow* window, GLFWbool enabled)
1133 {
1134     if (enabled)
1135     {
1136         struct wl_region* region = wl_compositor_create_region(_glfw.wl.compositor);
1137         wl_surface_set_input_region(window->wl.surface, region);
1138         wl_region_destroy(region);
1139     }
1140     else
1141         wl_surface_set_input_region(window->wl.surface, 0);
1142     wl_surface_commit(window->wl.surface);
1143 }
1144
1145 float _glfwPlatformGetWindowOpacity(_GLFWwindow* window)
1146 {
1147     return 1.f;
1148 }
1149
1150 void _glfwPlatformSetWindowOpacity(_GLFWwindow* window, float opacity)
1151 {
1152     _glfwInputError(GLFW_FEATURE_UNAVAILABLE,
1153                     "Wayland: The platform does not support setting the window opacity");
1154 }
1155
1156 void _glfwPlatformSetRawMouseMotion(_GLFWwindow *window, GLFWbool enabled)
1157 {
1158     // This is handled in relativePointerHandleRelativeMotion
1159 }
1160
1161 GLFWbool _glfwPlatformRawMouseMotionSupported(void)
1162 {
1163     return GLFW_TRUE;
1164 }
1165
1166 void _glfwPlatformPollEvents(void)
1167 {
1168     handleEvents(0);
1169 }
1170
1171 void _glfwPlatformWaitEvents(void)
1172 {
1173     handleEvents(-1);
1174 }
1175
1176 void _glfwPlatformWaitEventsTimeout(double timeout)
1177 {
1178     handleEvents((int) (timeout * 1e3));
1179 }
1180
1181 void _glfwPlatformPostEmptyEvent(void)
1182 {
1183     wl_display_sync(_glfw.wl.display);
1184 }
1185
1186 void _glfwPlatformGetCursorPos(_GLFWwindow* window, double* xpos, double* ypos)
1187 {
1188     if (xpos)
1189         *xpos = window->wl.cursorPosX;
1190     if (ypos)
1191         *ypos = window->wl.cursorPosY;
1192 }
1193
1194 static GLFWbool isPointerLocked(_GLFWwindow* window);
1195
1196 void _glfwPlatformSetCursorPos(_GLFWwindow* window, double x, double y)
1197 {
1198     if (isPointerLocked(window))
1199     {
1200         zwp_locked_pointer_v1_set_cursor_position_hint(
1201             window->wl.pointerLock.lockedPointer,
1202             wl_fixed_from_double(x), wl_fixed_from_double(y));
1203         wl_surface_commit(window->wl.surface);
1204     }
1205 }
1206
1207 void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode)
1208 {
1209     _glfwPlatformSetCursor(window, window->wl.currentCursor);
1210 }
1211
1212 const char* _glfwPlatformGetScancodeName(int scancode)
1213 {
1214     // TODO
1215     _glfwInputError(GLFW_FEATURE_UNIMPLEMENTED,
1216                     "Wayland: Key names not yet implemented");
1217     return NULL;
1218 }
1219
1220 int _glfwPlatformGetKeyScancode(int key)
1221 {
1222     return _glfw.wl.scancodes[key];
1223 }
1224
1225 int _glfwPlatformCreateCursor(_GLFWcursor* cursor,
1226                               const GLFWimage* image,
1227                               int xhot, int yhot)
1228 {
1229     cursor->wl.buffer = createShmBuffer(image);
1230     if (!cursor->wl.buffer)
1231         return GLFW_FALSE;
1232
1233     cursor->wl.width = image->width;
1234     cursor->wl.height = image->height;
1235     cursor->wl.xhot = xhot;
1236     cursor->wl.yhot = yhot;
1237     return GLFW_TRUE;
1238 }
1239
1240 int _glfwPlatformCreateStandardCursor(_GLFWcursor* cursor, int shape)
1241 {
1242     const char* name = NULL;
1243
1244     // Try the XDG names first
1245     if (shape == GLFW_ARROW_CURSOR)
1246         name = "default";
1247     else if (shape == GLFW_IBEAM_CURSOR)
1248         name = "text";
1249     else if (shape == GLFW_CROSSHAIR_CURSOR)
1250         name = "crosshair";
1251     else if (shape == GLFW_POINTING_HAND_CURSOR)
1252         name = "pointer";
1253     else if (shape == GLFW_RESIZE_EW_CURSOR)
1254         name = "ew-resize";
1255     else if (shape == GLFW_RESIZE_NS_CURSOR)
1256         name = "ns-resize";
1257     else if (shape == GLFW_RESIZE_NWSE_CURSOR)
1258         name = "nwse-resize";
1259     else if (shape == GLFW_RESIZE_NESW_CURSOR)
1260         name = "nesw-resize";
1261     else if (shape == GLFW_RESIZE_ALL_CURSOR)
1262         name = "all-scroll";
1263     else if (shape == GLFW_NOT_ALLOWED_CURSOR)
1264         name = "not-allowed";
1265
1266     cursor->wl.cursor = wl_cursor_theme_get_cursor(_glfw.wl.cursorTheme, name);
1267
1268     if (_glfw.wl.cursorThemeHiDPI)
1269     {
1270         cursor->wl.cursorHiDPI =
1271             wl_cursor_theme_get_cursor(_glfw.wl.cursorThemeHiDPI, name);
1272     }
1273
1274     if (!cursor->wl.cursor)
1275     {
1276         // Fall back to the core X11 names
1277         if (shape == GLFW_ARROW_CURSOR)
1278             name = "left_ptr";
1279         else if (shape == GLFW_IBEAM_CURSOR)
1280             name = "xterm";
1281         else if (shape == GLFW_CROSSHAIR_CURSOR)
1282             name = "crosshair";
1283         else if (shape == GLFW_POINTING_HAND_CURSOR)
1284             name = "hand2";
1285         else if (shape == GLFW_RESIZE_EW_CURSOR)
1286             name = "sb_h_double_arrow";
1287         else if (shape == GLFW_RESIZE_NS_CURSOR)
1288             name = "sb_v_double_arrow";
1289         else if (shape == GLFW_RESIZE_ALL_CURSOR)
1290             name = "fleur";
1291         else
1292         {
1293             _glfwInputError(GLFW_CURSOR_UNAVAILABLE,
1294                             "Wayland: Standard cursor shape unavailable");
1295             return GLFW_FALSE;
1296         }
1297
1298         cursor->wl.cursor = wl_cursor_theme_get_cursor(_glfw.wl.cursorTheme, name);
1299         if (!cursor->wl.cursor)
1300         {
1301             _glfwInputError(GLFW_PLATFORM_ERROR,
1302                             "Wayland: Failed to create standard cursor \"%s\"",
1303                             name);
1304             return GLFW_FALSE;
1305         }
1306
1307         if (_glfw.wl.cursorThemeHiDPI)
1308         {
1309             if (!cursor->wl.cursorHiDPI)
1310             {
1311                 cursor->wl.cursorHiDPI =
1312                     wl_cursor_theme_get_cursor(_glfw.wl.cursorThemeHiDPI, name);
1313             }
1314         }
1315     }
1316
1317     return GLFW_TRUE;
1318 }
1319
1320 void _glfwPlatformDestroyCursor(_GLFWcursor* cursor)
1321 {
1322     // If it's a standard cursor we don't need to do anything here
1323     if (cursor->wl.cursor)
1324         return;
1325
1326     if (cursor->wl.buffer)
1327         wl_buffer_destroy(cursor->wl.buffer);
1328 }
1329
1330 static void relativePointerHandleRelativeMotion(void* data,
1331                                                 struct zwp_relative_pointer_v1* pointer,
1332                                                 uint32_t timeHi,
1333                                                 uint32_t timeLo,
1334                                                 wl_fixed_t dx,
1335                                                 wl_fixed_t dy,
1336                                                 wl_fixed_t dxUnaccel,
1337                                                 wl_fixed_t dyUnaccel)
1338 {
1339     _GLFWwindow* window = data;
1340     double xpos = window->virtualCursorPosX;
1341     double ypos = window->virtualCursorPosY;
1342
1343     if (window->cursorMode != GLFW_CURSOR_DISABLED)
1344         return;
1345
1346     if (window->rawMouseMotion)
1347     {
1348         xpos += wl_fixed_to_double(dxUnaccel);
1349         ypos += wl_fixed_to_double(dyUnaccel);
1350     }
1351     else
1352     {
1353         xpos += wl_fixed_to_double(dx);
1354         ypos += wl_fixed_to_double(dy);
1355     }
1356
1357     _glfwInputCursorPos(window, xpos, ypos);
1358 }
1359
1360 static const struct zwp_relative_pointer_v1_listener relativePointerListener = {
1361     relativePointerHandleRelativeMotion
1362 };
1363
1364 static void lockedPointerHandleLocked(void* data,
1365                                       struct zwp_locked_pointer_v1* lockedPointer)
1366 {
1367 }
1368
1369 static void unlockPointer(_GLFWwindow* window)
1370 {
1371     struct zwp_relative_pointer_v1* relativePointer =
1372         window->wl.pointerLock.relativePointer;
1373     struct zwp_locked_pointer_v1* lockedPointer =
1374         window->wl.pointerLock.lockedPointer;
1375
1376     zwp_relative_pointer_v1_destroy(relativePointer);
1377     zwp_locked_pointer_v1_destroy(lockedPointer);
1378
1379     window->wl.pointerLock.relativePointer = NULL;
1380     window->wl.pointerLock.lockedPointer = NULL;
1381 }
1382
1383 static void lockPointer(_GLFWwindow* window);
1384
1385 static void lockedPointerHandleUnlocked(void* data,
1386                                         struct zwp_locked_pointer_v1* lockedPointer)
1387 {
1388 }
1389
1390 static const struct zwp_locked_pointer_v1_listener lockedPointerListener = {
1391     lockedPointerHandleLocked,
1392     lockedPointerHandleUnlocked
1393 };
1394
1395 static void lockPointer(_GLFWwindow* window)
1396 {
1397     struct zwp_relative_pointer_v1* relativePointer;
1398     struct zwp_locked_pointer_v1* lockedPointer;
1399
1400     if (!_glfw.wl.relativePointerManager)
1401     {
1402         _glfwInputError(GLFW_PLATFORM_ERROR,
1403                         "Wayland: no relative pointer manager");
1404         return;
1405     }
1406
1407     relativePointer =
1408         zwp_relative_pointer_manager_v1_get_relative_pointer(
1409             _glfw.wl.relativePointerManager,
1410             _glfw.wl.pointer);
1411     zwp_relative_pointer_v1_add_listener(relativePointer,
1412                                          &relativePointerListener,
1413                                          window);
1414
1415     lockedPointer =
1416         zwp_pointer_constraints_v1_lock_pointer(
1417             _glfw.wl.pointerConstraints,
1418             window->wl.surface,
1419             _glfw.wl.pointer,
1420             NULL,
1421             ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_PERSISTENT);
1422     zwp_locked_pointer_v1_add_listener(lockedPointer,
1423                                        &lockedPointerListener,
1424                                        window);
1425
1426     window->wl.pointerLock.relativePointer = relativePointer;
1427     window->wl.pointerLock.lockedPointer = lockedPointer;
1428
1429     wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.serial,
1430                           NULL, 0, 0);
1431 }
1432
1433 static GLFWbool isPointerLocked(_GLFWwindow* window)
1434 {
1435     return window->wl.pointerLock.lockedPointer != NULL;
1436 }
1437
1438 void _glfwPlatformSetCursor(_GLFWwindow* window, _GLFWcursor* cursor)
1439 {
1440     struct wl_cursor* defaultCursor;
1441     struct wl_cursor* defaultCursorHiDPI = NULL;
1442
1443     if (!_glfw.wl.pointer)
1444         return;
1445
1446     window->wl.currentCursor = cursor;
1447
1448     // If we're not in the correct window just save the cursor
1449     // the next time the pointer enters the window the cursor will change
1450     if (window != _glfw.wl.pointerFocus || window->wl.decorations.focus != mainWindow)
1451         return;
1452
1453     // Unlock possible pointer lock if no longer disabled.
1454     if (window->cursorMode != GLFW_CURSOR_DISABLED && isPointerLocked(window))
1455         unlockPointer(window);
1456
1457     if (window->cursorMode == GLFW_CURSOR_NORMAL)
1458     {
1459         if (cursor)
1460             setCursorImage(window, &cursor->wl);
1461         else
1462         {
1463             defaultCursor = wl_cursor_theme_get_cursor(_glfw.wl.cursorTheme,
1464                                                        "left_ptr");
1465             if (!defaultCursor)
1466             {
1467                 _glfwInputError(GLFW_PLATFORM_ERROR,
1468                                 "Wayland: Standard cursor not found");
1469                 return;
1470             }
1471             if (_glfw.wl.cursorThemeHiDPI)
1472                 defaultCursorHiDPI =
1473                     wl_cursor_theme_get_cursor(_glfw.wl.cursorThemeHiDPI,
1474                                                "left_ptr");
1475             _GLFWcursorWayland cursorWayland = {
1476                 defaultCursor,
1477                 defaultCursorHiDPI,
1478                 NULL,
1479                 0, 0,
1480                 0, 0,
1481                 0
1482             };
1483             setCursorImage(window, &cursorWayland);
1484         }
1485     }
1486     else if (window->cursorMode == GLFW_CURSOR_DISABLED)
1487     {
1488         if (!isPointerLocked(window))
1489             lockPointer(window);
1490     }
1491     else if (window->cursorMode == GLFW_CURSOR_HIDDEN)
1492     {
1493         wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.serial, NULL, 0, 0);
1494     }
1495 }
1496
1497 static void dataSourceHandleTarget(void* data,
1498                                    struct wl_data_source* dataSource,
1499                                    const char* mimeType)
1500 {
1501     if (_glfw.wl.dataSource != dataSource)
1502     {
1503         _glfwInputError(GLFW_PLATFORM_ERROR,
1504                         "Wayland: Unknown clipboard data source");
1505         return;
1506     }
1507 }
1508
1509 static void dataSourceHandleSend(void* data,
1510                                  struct wl_data_source* dataSource,
1511                                  const char* mimeType,
1512                                  int fd)
1513 {
1514     const char* string = _glfw.wl.clipboardSendString;
1515     size_t len = _glfw.wl.clipboardSendSize;
1516     int ret;
1517
1518     if (_glfw.wl.dataSource != dataSource)
1519     {
1520         _glfwInputError(GLFW_PLATFORM_ERROR,
1521                         "Wayland: Unknown clipboard data source");
1522         return;
1523     }
1524
1525     if (!string)
1526     {
1527         _glfwInputError(GLFW_PLATFORM_ERROR,
1528                         "Wayland: Copy requested from an invalid string");
1529         return;
1530     }
1531
1532     if (strcmp(mimeType, "text/plain;charset=utf-8") != 0)
1533     {
1534         _glfwInputError(GLFW_PLATFORM_ERROR,
1535                         "Wayland: Wrong MIME type asked from clipboard");
1536         close(fd);
1537         return;
1538     }
1539
1540     while (len > 0)
1541     {
1542         ret = write(fd, string, len);
1543         if (ret == -1 && errno == EINTR)
1544             continue;
1545         if (ret == -1)
1546         {
1547             // TODO: also report errno maybe.
1548             _glfwInputError(GLFW_PLATFORM_ERROR,
1549                             "Wayland: Error while writing the clipboard");
1550             close(fd);
1551             return;
1552         }
1553         len -= ret;
1554     }
1555     close(fd);
1556 }
1557
1558 static void dataSourceHandleCancelled(void* data,
1559                                       struct wl_data_source* dataSource)
1560 {
1561     wl_data_source_destroy(dataSource);
1562
1563     if (_glfw.wl.dataSource != dataSource)
1564     {
1565         _glfwInputError(GLFW_PLATFORM_ERROR,
1566                         "Wayland: Unknown clipboard data source");
1567         return;
1568     }
1569
1570     _glfw.wl.dataSource = NULL;
1571 }
1572
1573 static const struct wl_data_source_listener dataSourceListener = {
1574     dataSourceHandleTarget,
1575     dataSourceHandleSend,
1576     dataSourceHandleCancelled,
1577 };
1578
1579 void _glfwPlatformSetClipboardString(const char* string)
1580 {
1581     if (_glfw.wl.dataSource)
1582     {
1583         wl_data_source_destroy(_glfw.wl.dataSource);
1584         _glfw.wl.dataSource = NULL;
1585     }
1586
1587     if (_glfw.wl.clipboardSendString)
1588     {
1589         free(_glfw.wl.clipboardSendString);
1590         _glfw.wl.clipboardSendString = NULL;
1591     }
1592
1593     _glfw.wl.clipboardSendString = strdup(string);
1594     if (!_glfw.wl.clipboardSendString)
1595     {
1596         _glfwInputError(GLFW_PLATFORM_ERROR,
1597                         "Wayland: Impossible to allocate clipboard string");
1598         return;
1599     }
1600     _glfw.wl.clipboardSendSize = strlen(string);
1601     _glfw.wl.dataSource =
1602         wl_data_device_manager_create_data_source(_glfw.wl.dataDeviceManager);
1603     if (!_glfw.wl.dataSource)
1604     {
1605         _glfwInputError(GLFW_PLATFORM_ERROR,
1606                         "Wayland: Impossible to create clipboard source");
1607         free(_glfw.wl.clipboardSendString);
1608         return;
1609     }
1610     wl_data_source_add_listener(_glfw.wl.dataSource,
1611                                 &dataSourceListener,
1612                                 NULL);
1613     wl_data_source_offer(_glfw.wl.dataSource, "text/plain;charset=utf-8");
1614     wl_data_device_set_selection(_glfw.wl.dataDevice,
1615                                  _glfw.wl.dataSource,
1616                                  _glfw.wl.serial);
1617 }
1618
1619 static GLFWbool growClipboardString(void)
1620 {
1621     char* clipboard = _glfw.wl.clipboardString;
1622
1623     clipboard = realloc(clipboard, _glfw.wl.clipboardSize * 2);
1624     if (!clipboard)
1625     {
1626         _glfwInputError(GLFW_PLATFORM_ERROR,
1627                         "Wayland: Impossible to grow clipboard string");
1628         return GLFW_FALSE;
1629     }
1630     _glfw.wl.clipboardString = clipboard;
1631     _glfw.wl.clipboardSize = _glfw.wl.clipboardSize * 2;
1632     return GLFW_TRUE;
1633 }
1634
1635 const char* _glfwPlatformGetClipboardString(void)
1636 {
1637     int fds[2];
1638     int ret;
1639     size_t len = 0;
1640
1641     if (!_glfw.wl.dataOffer)
1642     {
1643         _glfwInputError(GLFW_FORMAT_UNAVAILABLE,
1644                         "No clipboard data has been sent yet");
1645         return NULL;
1646     }
1647
1648     ret = pipe2(fds, O_CLOEXEC);
1649     if (ret < 0)
1650     {
1651         // TODO: also report errno maybe?
1652         _glfwInputError(GLFW_PLATFORM_ERROR,
1653                         "Wayland: Impossible to create clipboard pipe fds");
1654         return NULL;
1655     }
1656
1657     wl_data_offer_receive(_glfw.wl.dataOffer, "text/plain;charset=utf-8", fds[1]);
1658     close(fds[1]);
1659
1660     // XXX: this is a huge hack, this function shouldn’t be synchronous!
1661     handleEvents(-1);
1662
1663     while (1)
1664     {
1665         // Grow the clipboard if we need to paste something bigger, there is no
1666         // shrink operation yet.
1667         if (len + 4096 > _glfw.wl.clipboardSize)
1668         {
1669             if (!growClipboardString())
1670             {
1671                 close(fds[0]);
1672                 return NULL;
1673             }
1674         }
1675
1676         // Then read from the fd to the clipboard, handling all known errors.
1677         ret = read(fds[0], _glfw.wl.clipboardString + len, 4096);
1678         if (ret == 0)
1679             break;
1680         if (ret == -1 && errno == EINTR)
1681             continue;
1682         if (ret == -1)
1683         {
1684             // TODO: also report errno maybe.
1685             _glfwInputError(GLFW_PLATFORM_ERROR,
1686                             "Wayland: Impossible to read from clipboard fd");
1687             close(fds[0]);
1688             return NULL;
1689         }
1690         len += ret;
1691     }
1692     close(fds[0]);
1693     if (len + 1 > _glfw.wl.clipboardSize)
1694     {
1695         if (!growClipboardString())
1696             return NULL;
1697     }
1698     _glfw.wl.clipboardString[len] = '\0';
1699     return _glfw.wl.clipboardString;
1700 }
1701
1702 EGLenum _glfwPlatformGetEGLPlatform(EGLint** attribs)
1703 {
1704     if (_glfw.egl.EXT_platform_base && _glfw.egl.EXT_platform_wayland)
1705         return EGL_PLATFORM_WAYLAND_EXT;
1706     else
1707         return 0;
1708 }
1709
1710 EGLNativeDisplayType _glfwPlatformGetEGLNativeDisplay(void)
1711 {
1712     return _glfw.wl.display;
1713 }
1714
1715 EGLNativeWindowType _glfwPlatformGetEGLNativeWindow(_GLFWwindow* window)
1716 {
1717     return window->wl.native;
1718 }
1719
1720 void _glfwPlatformGetRequiredInstanceExtensions(char** extensions)
1721 {
1722     if (!_glfw.vk.KHR_surface || !_glfw.vk.KHR_wayland_surface)
1723         return;
1724
1725     extensions[0] = "VK_KHR_surface";
1726     extensions[1] = "VK_KHR_wayland_surface";
1727 }
1728
1729 int _glfwPlatformGetPhysicalDevicePresentationSupport(VkInstance instance,
1730                                                       VkPhysicalDevice device,
1731                                                       uint32_t queuefamily)
1732 {
1733     PFN_vkGetPhysicalDeviceWaylandPresentationSupportKHR
1734         vkGetPhysicalDeviceWaylandPresentationSupportKHR =
1735         (PFN_vkGetPhysicalDeviceWaylandPresentationSupportKHR)
1736         vkGetInstanceProcAddr(instance, "vkGetPhysicalDeviceWaylandPresentationSupportKHR");
1737     if (!vkGetPhysicalDeviceWaylandPresentationSupportKHR)
1738     {
1739         _glfwInputError(GLFW_API_UNAVAILABLE,
1740                         "Wayland: Vulkan instance missing VK_KHR_wayland_surface extension");
1741         return VK_NULL_HANDLE;
1742     }
1743
1744     return vkGetPhysicalDeviceWaylandPresentationSupportKHR(device,
1745                                                             queuefamily,
1746                                                             _glfw.wl.display);
1747 }
1748
1749 VkResult _glfwPlatformCreateWindowSurface(VkInstance instance,
1750                                           _GLFWwindow* window,
1751                                           const VkAllocationCallbacks* allocator,
1752                                           VkSurfaceKHR* surface)
1753 {
1754     VkResult err;
1755     VkWaylandSurfaceCreateInfoKHR sci;
1756     PFN_vkCreateWaylandSurfaceKHR vkCreateWaylandSurfaceKHR;
1757
1758     vkCreateWaylandSurfaceKHR = (PFN_vkCreateWaylandSurfaceKHR)
1759         vkGetInstanceProcAddr(instance, "vkCreateWaylandSurfaceKHR");
1760     if (!vkCreateWaylandSurfaceKHR)
1761     {
1762         _glfwInputError(GLFW_API_UNAVAILABLE,
1763                         "Wayland: Vulkan instance missing VK_KHR_wayland_surface extension");
1764         return VK_ERROR_EXTENSION_NOT_PRESENT;
1765     }
1766
1767     memset(&sci, 0, sizeof(sci));
1768     sci.sType = VK_STRUCTURE_TYPE_WAYLAND_SURFACE_CREATE_INFO_KHR;
1769     sci.display = _glfw.wl.display;
1770     sci.surface = window->wl.surface;
1771
1772     err = vkCreateWaylandSurfaceKHR(instance, &sci, allocator, surface);
1773     if (err)
1774     {
1775         _glfwInputError(GLFW_PLATFORM_ERROR,
1776                         "Wayland: Failed to create Vulkan surface: %s",
1777                         _glfwGetVulkanResultString(err));
1778     }
1779
1780     return err;
1781 }
1782
1783
1784 //////////////////////////////////////////////////////////////////////////
1785 //////                        GLFW native API                       //////
1786 //////////////////////////////////////////////////////////////////////////
1787
1788 GLFWAPI struct wl_display* glfwGetWaylandDisplay(void)
1789 {
1790     _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
1791     return _glfw.wl.display;
1792 }
1793
1794 GLFWAPI struct wl_surface* glfwGetWaylandWindow(GLFWwindow* handle)
1795 {
1796     _GLFWwindow* window = (_GLFWwindow*) handle;
1797     _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
1798     return window->wl.surface;
1799 }
1800