medfall

wl_window.cc (32545B)

---

 //========================================================================
 // GLFW 3.3 Wayland - www.glfw.org
 //------------------------------------------------------------------------
 // Copyright (c) 2014 Jonas Ådahl <jadahl@gmail.com>
 //
 // This software is provided 'as-is', without any express or implied
 // warranty. In no event will the authors be held liable for any damages
 // arising from the use of this software.
 //
 // Permission is granted to anyone to use this software for any purpose,
 // including commercial applications, and to alter it and redistribute it
 // freely, subject to the following restrictions:
 //
 // 1. The origin of this software must not be misrepresented; you must not
 //    claim that you wrote the original software. If you use this software
 //    in a product, an acknowledgment in the product documentation would
 //    be appreciated but is not required.
 //
 // 2. Altered source versions must be plainly marked as such, and must not
 //    be misrepresented as being the original software.
 //
 // 3. This notice may not be removed or altered from any source
 //    distribution.
 //
 //========================================================================
 
 #define _GNU_SOURCE
 
 #include "internal.h"
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <errno.h>
 #include <unistd.h>
 #include <string.h>
 #include <fcntl.h>
 #include <sys/mman.h>
 #include <poll.h>
 
 #include <wayland-egl.h>
 #include <wayland-cursor.h>
 
 
 static void handlePing(void* data,
                        struct wl_shell_surface* shellSurface,
                        uint32_t serial)
 {
     wl_shell_surface_pong(shellSurface, serial);
 }
 
 static void handleConfigure(void* data,
                             struct wl_shell_surface* shellSurface,
                             uint32_t edges,
                             int32_t width,
                             int32_t height)
 {
     _GLFWwindow* window = data;
     float aspectRatio;
     float targetRatio;
 
     if (!window->monitor)
     {
         if (window->numer != GLFW_DONT_CARE && window->denom != GLFW_DONT_CARE)
         {
             aspectRatio = (float)width / (float)height;
             targetRatio = (float)window->numer / (float)window->denom;
             if (aspectRatio < targetRatio)
                 height = width / targetRatio;
             else if (aspectRatio > targetRatio)
                 width = height * targetRatio;
         }
 
         if (window->minwidth != GLFW_DONT_CARE && width < window->minwidth)
             width = window->minwidth;
         else if (window->maxwidth != GLFW_DONT_CARE && width > window->maxwidth)
             width = window->maxwidth;
 
         if (window->minheight != GLFW_DONT_CARE && height < window->minheight)
             height = window->minheight;
         else if (window->maxheight != GLFW_DONT_CARE && height > window->maxheight)
             height = window->maxheight;
     }
 
     _glfwInputWindowSize(window, width, height);
     _glfwPlatformSetWindowSize(window, width, height);
     _glfwInputWindowDamage(window);
 }
 
 static void handlePopupDone(void* data,
                             struct wl_shell_surface* shellSurface)
 {
 }
 
 static const struct wl_shell_surface_listener shellSurfaceListener = {
     handlePing,
     handleConfigure,
     handlePopupDone
 };
 
 static void checkScaleChange(_GLFWwindow* window)
 {
     int scaledWidth, scaledHeight;
     int scale = 1;
     int i;
     int monitorScale;
 
     // Check if we will be able to set the buffer scale or not.
     if (_glfw.wl.compositorVersion < 3)
         return;
 
     // Get the scale factor from the highest scale monitor.
     for (i = 0; i < window->wl.monitorsCount; ++i)
     {
         monitorScale = window->wl.monitors[i]->wl.scale;
         if (scale < monitorScale)
             scale = monitorScale;
     }
 
     // Only change the framebuffer size if the scale changed.
     if (scale != window->wl.scale)
     {
         window->wl.scale = scale;
         scaledWidth = window->wl.width * scale;
         scaledHeight = window->wl.height * scale;
         wl_surface_set_buffer_scale(window->wl.surface, scale);
         wl_egl_window_resize(window->wl.native, scaledWidth, scaledHeight, 0, 0);
         _glfwInputFramebufferSize(window, scaledWidth, scaledHeight);
     }
 }
 
 static void handleEnter(void *data,
                         struct wl_surface *surface,
                         struct wl_output *output)
 {
     _GLFWwindow* window = data;
     _GLFWmonitor* monitor = wl_output_get_user_data(output);
 
     if (window->wl.monitorsCount + 1 > window->wl.monitorsSize)
     {
         ++window->wl.monitorsSize;
         window->wl.monitors =
             realloc(window->wl.monitors,
                     window->wl.monitorsSize * sizeof(_GLFWmonitor*));
     }
 
     window->wl.monitors[window->wl.monitorsCount++] = monitor;
 
     checkScaleChange(window);
 }
 
 static void handleLeave(void *data,
                         struct wl_surface *surface,
                         struct wl_output *output)
 {
     _GLFWwindow* window = data;
     _GLFWmonitor* monitor = wl_output_get_user_data(output);
     GLFWbool found;
     int i;
 
     for (i = 0, found = GLFW_FALSE; i < window->wl.monitorsCount - 1; ++i)
     {
         if (monitor == window->wl.monitors[i])
             found = GLFW_TRUE;
         if (found)
             window->wl.monitors[i] = window->wl.monitors[i + 1];
     }
     window->wl.monitors[--window->wl.monitorsCount] = NULL;
 
     checkScaleChange(window);
 }
 
 static const struct wl_surface_listener surfaceListener = {
     handleEnter,
     handleLeave
 };
 
 // Makes the surface considered as XRGB instead of ARGB.
 static void setOpaqueRegion(_GLFWwindow* window)
 {
     struct wl_region* region;
 
     region = wl_compositor_create_region(_glfw.wl.compositor);
     if (!region)
         return;
 
     wl_region_add(region, 0, 0, window->wl.width, window->wl.height);
     wl_surface_set_opaque_region(window->wl.surface, region);
     wl_surface_commit(window->wl.surface);
     wl_region_destroy(region);
 }
 
 static GLFWbool createSurface(_GLFWwindow* window,
                               const _GLFWwndconfig* wndconfig)
 {
     window->wl.surface = wl_compositor_create_surface(_glfw.wl.compositor);
     if (!window->wl.surface)
         return GLFW_FALSE;
 
     wl_surface_add_listener(window->wl.surface,
                             &surfaceListener,
                             window);
 
     wl_surface_set_user_data(window->wl.surface, window);
 
     window->wl.native = wl_egl_window_create(window->wl.surface,
                                              wndconfig->width,
                                              wndconfig->height);
     if (!window->wl.native)
         return GLFW_FALSE;
 
     window->wl.width = wndconfig->width;
     window->wl.height = wndconfig->height;
     window->wl.scale = 1;
 
     // TODO: make this optional once issue #197 is fixed.
     setOpaqueRegion(window);
 
     return GLFW_TRUE;
 }
 
 static GLFWbool createShellSurface(_GLFWwindow* window)
 {
     window->wl.shellSurface = wl_shell_get_shell_surface(_glfw.wl.shell,
                                                          window->wl.surface);
     if (!window->wl.shellSurface)
         return GLFW_FALSE;
 
     wl_shell_surface_add_listener(window->wl.shellSurface,
                                   &shellSurfaceListener,
                                   window);
 
     if (window->wl.title)
         wl_shell_surface_set_title(window->wl.shellSurface, window->wl.title);
 
     if (window->monitor)
     {
         wl_shell_surface_set_fullscreen(
             window->wl.shellSurface,
             WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT,
             0,
             window->monitor->wl.output);
     }
     else if (window->wl.maximized)
     {
         wl_shell_surface_set_maximized(window->wl.shellSurface, NULL);
     }
     else
     {
         wl_shell_surface_set_toplevel(window->wl.shellSurface);
     }
 
     wl_surface_commit(window->wl.surface);
 
     return GLFW_TRUE;
 }
 
 static int
 createTmpfileCloexec(char* tmpname)
 {
     int fd;
 
     fd = mkostemp(tmpname, O_CLOEXEC);
     if (fd >= 0)
         unlink(tmpname);
 
     return fd;
 }
 
 static void
 handleEvents(int timeout)
 {
     struct wl_display* display = _glfw.wl.display;
     struct pollfd fds[] = {
         { wl_display_get_fd(display), POLLIN },
     };
 
     while (wl_display_prepare_read(display) != 0)
         wl_display_dispatch_pending(display);
 
     // If an error different from EAGAIN happens, we have likely been
     // disconnected from the Wayland session, try to handle that the best we
     // can.
     if (wl_display_flush(display) < 0 && errno != EAGAIN)
     {
         _GLFWwindow* window = _glfw.windowListHead;
         while (window)
         {
             _glfwInputWindowCloseRequest(window);
             window = window->next;
         }
         wl_display_cancel_read(display);
         return;
     }
 
     if (poll(fds, 1, timeout) > 0)
     {
         wl_display_read_events(display);
         wl_display_dispatch_pending(display);
     }
     else
     {
         wl_display_cancel_read(display);
     }
 }
 
 /*
  * Create a new, unique, anonymous file of the given size, and
  * return the file descriptor for it. The file descriptor is set
  * CLOEXEC. The file is immediately suitable for mmap()'ing
  * the given size at offset zero.
  *
  * The file should not have a permanent backing store like a disk,
  * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
  *
  * The file name is deleted from the file system.
  *
  * The file is suitable for buffer sharing between processes by
  * transmitting the file descriptor over Unix sockets using the
  * SCM_RIGHTS methods.
  *
  * posix_fallocate() is used to guarantee that disk space is available
  * for the file at the given size. If disk space is insufficent, errno
  * is set to ENOSPC. If posix_fallocate() is not supported, program may
  * receive SIGBUS on accessing mmap()'ed file contents instead.
  */
 int
 createAnonymousFile(off_t size)
 {
     static const char template[] = "/glfw-shared-XXXXXX";
     const char* path;
     char* name;
     int fd;
     int ret;
 
     path = getenv("XDG_RUNTIME_DIR");
     if (!path)
     {
         errno = ENOENT;
         return -1;
     }
 
     name = calloc(strlen(path) + sizeof(template), 1);
     strcpy(name, path);
     strcat(name, template);
 
     fd = createTmpfileCloexec(name);
 
     free(name);
 
     if (fd < 0)
         return -1;
     ret = posix_fallocate(fd, 0, size);
     if (ret != 0)
     {
         close(fd);
         errno = ret;
         return -1;
     }
     return fd;
 }
 
 // Translates a GLFW standard cursor to a theme cursor name
 //
 static char *translateCursorShape(int shape)
 {
     switch (shape)
     {
         case GLFW_ARROW_CURSOR:
             return "left_ptr";
         case GLFW_IBEAM_CURSOR:
             return "xterm";
         case GLFW_CROSSHAIR_CURSOR:
             return "crosshair";
         case GLFW_HAND_CURSOR:
             return "grabbing";
         case GLFW_HRESIZE_CURSOR:
             return "sb_h_double_arrow";
         case GLFW_VRESIZE_CURSOR:
             return "sb_v_double_arrow";
     }
     return NULL;
 }
 
 //////////////////////////////////////////////////////////////////////////
 //////                       GLFW platform API                      //////
 //////////////////////////////////////////////////////////////////////////
 
 int _glfwPlatformCreateWindow(_GLFWwindow* window,
                               const _GLFWwndconfig* wndconfig,
                               const _GLFWctxconfig* ctxconfig,
                               const _GLFWfbconfig* fbconfig)
 {
     if (!createSurface(window, wndconfig))
         return GLFW_FALSE;
 
     if (ctxconfig->client != GLFW_NO_API)
     {
         if (ctxconfig->source == GLFW_EGL_CONTEXT_API ||
             ctxconfig->source == GLFW_NATIVE_CONTEXT_API)
         {
             if (!_glfwInitEGL())
                 return GLFW_FALSE;
             if (!_glfwCreateContextEGL(window, ctxconfig, fbconfig))
                 return GLFW_FALSE;
         }
         else if (ctxconfig->source == GLFW_OSMESA_CONTEXT_API)
         {
             if (!_glfwInitOSMesa())
                 return GLFW_FALSE;
             if (!_glfwCreateContextOSMesa(window, ctxconfig, fbconfig))
                 return GLFW_FALSE;
         }
     }
 
     if (wndconfig->title)
         window->wl.title = strdup(wndconfig->title);
 
     if (wndconfig->visible)
     {
         if (!createShellSurface(window))
             return GLFW_FALSE;
 
         window->wl.visible = GLFW_TRUE;
     }
     else
     {
         window->wl.shellSurface = NULL;
         window->wl.visible = GLFW_FALSE;
     }
 
     window->wl.currentCursor = NULL;
 
     window->wl.monitors = calloc(1, sizeof(_GLFWmonitor*));
     window->wl.monitorsCount = 0;
     window->wl.monitorsSize = 1;
 
     return GLFW_TRUE;
 }
 
 void _glfwPlatformDestroyWindow(_GLFWwindow* window)
 {
     if (window == _glfw.wl.pointerFocus)
     {
         _glfw.wl.pointerFocus = NULL;
         _glfwInputCursorEnter(window, GLFW_FALSE);
     }
     if (window == _glfw.wl.keyboardFocus)
     {
         _glfw.wl.keyboardFocus = NULL;
         _glfwInputWindowFocus(window, GLFW_FALSE);
     }
 
     if (window->context.destroy)
         window->context.destroy(window);
 
     if (window->wl.native)
         wl_egl_window_destroy(window->wl.native);
 
     if (window->wl.shellSurface)
         wl_shell_surface_destroy(window->wl.shellSurface);
 
     if (window->wl.surface)
         wl_surface_destroy(window->wl.surface);
 
     free(window->wl.title);
     free(window->wl.monitors);
 }
 
 void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title)
 {
     if (window->wl.title)
         free(window->wl.title);
     window->wl.title = strdup(title);
     if (window->wl.shellSurface)
         wl_shell_surface_set_title(window->wl.shellSurface, title);
 }
 
 void _glfwPlatformSetWindowIcon(_GLFWwindow* window,
                                 int count, const GLFWimage* images)
 {
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Setting window icon not supported");
 }
 
 void _glfwPlatformGetWindowPos(_GLFWwindow* window, int* xpos, int* ypos)
 {
     // A Wayland client is not aware of its position, so just warn and leave it
     // as (0, 0)
 
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Window position retrieval not supported");
 }
 
 void _glfwPlatformSetWindowPos(_GLFWwindow* window, int xpos, int ypos)
 {
     // A Wayland client can not set its position, so just warn
 
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Window position setting not supported");
 }
 
 void _glfwPlatformGetWindowSize(_GLFWwindow* window, int* width, int* height)
 {
     if (width)
         *width = window->wl.width;
     if (height)
         *height = window->wl.height;
 }
 
 void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height)
 {
     int scaledWidth = width * window->wl.scale;
     int scaledHeight = height * window->wl.scale;
     window->wl.width = width;
     window->wl.height = height;
     wl_egl_window_resize(window->wl.native, scaledWidth, scaledHeight, 0, 0);
     setOpaqueRegion(window);
     _glfwInputFramebufferSize(window, scaledWidth, scaledHeight);
 }
 
 void _glfwPlatformSetWindowSizeLimits(_GLFWwindow* window,
                                       int minwidth, int minheight,
                                       int maxwidth, int maxheight)
 {
     // TODO: find out how to trigger a resize.
     // The actual limits are checked in the wl_shell_surface::configure handler.
 }
 
 void _glfwPlatformSetWindowAspectRatio(_GLFWwindow* window, int numer, int denom)
 {
     // TODO: find out how to trigger a resize.
     // The actual limits are checked in the wl_shell_surface::configure handler.
 }
 
 void _glfwPlatformGetFramebufferSize(_GLFWwindow* window, int* width, int* height)
 {
     _glfwPlatformGetWindowSize(window, width, height);
     *width *= window->wl.scale;
     *height *= window->wl.scale;
 }
 
 void _glfwPlatformGetWindowFrameSize(_GLFWwindow* window,
                                      int* left, int* top,
                                      int* right, int* bottom)
 {
     // TODO: will need a proper implementation once decorations are
     // implemented, but for now just leave everything as 0.
 }
 
 void _glfwPlatformIconifyWindow(_GLFWwindow* window)
 {
     // TODO: move to xdg_shell instead of wl_shell.
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Iconify window not supported");
 }
 
 void _glfwPlatformRestoreWindow(_GLFWwindow* window)
 {
     // TODO: also do the same for iconified.
     if (window->monitor || window->wl.maximized)
     {
         if (window->wl.shellSurface)
             wl_shell_surface_set_toplevel(window->wl.shellSurface);
 
         window->wl.maximized = GLFW_FALSE;
     }
 }
 
 void _glfwPlatformMaximizeWindow(_GLFWwindow* window)
 {
     if (!window->monitor && !window->wl.maximized)
     {
         if (window->wl.shellSurface)
         {
             // Let the compositor select the best output.
             wl_shell_surface_set_maximized(window->wl.shellSurface, NULL);
         }
         window->wl.maximized = GLFW_TRUE;
     }
 }
 
 void _glfwPlatformShowWindow(_GLFWwindow* window)
 {
     if (!window->monitor)
     {
         if (!window->wl.shellSurface)
             createShellSurface(window);
         window->wl.visible = GLFW_TRUE;
     }
 }
 
 void _glfwPlatformHideWindow(_GLFWwindow* window)
 {
     if (!window->monitor)
     {
         if (window->wl.shellSurface)
             wl_shell_surface_destroy(window->wl.shellSurface);
         window->wl.visible = GLFW_FALSE;
     }
 }
 
 void _glfwPlatformRequestWindowAttention(_GLFWwindow* window)
 {
     // TODO
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Window attention request not implemented yet");
 }
 
 void _glfwPlatformFocusWindow(_GLFWwindow* window)
 {
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Focusing a window requires user interaction");
 }
 
 void _glfwPlatformSetWindowMonitor(_GLFWwindow* window,
                                    _GLFWmonitor* monitor,
                                    int xpos, int ypos,
                                    int width, int height,
                                    int refreshRate)
 {
     if (monitor)
     {
         wl_shell_surface_set_fullscreen(
             window->wl.shellSurface,
             WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT,
             refreshRate * 1000, // Convert Hz to mHz.
             monitor->wl.output);
     }
     else
     {
         wl_shell_surface_set_toplevel(window->wl.shellSurface);
     }
     _glfwInputWindowMonitorChange(window, monitor);
 }
 
 int _glfwPlatformWindowFocused(_GLFWwindow* window)
 {
     return _glfw.wl.keyboardFocus == window;
 }
 
 int _glfwPlatformWindowIconified(_GLFWwindow* window)
 {
     // TODO: move to xdg_shell, wl_shell doesn't have any iconified concept.
     return GLFW_FALSE;
 }
 
 int _glfwPlatformWindowVisible(_GLFWwindow* window)
 {
     return window->wl.visible;
 }
 
 int _glfwPlatformWindowMaximized(_GLFWwindow* window)
 {
     return window->wl.maximized;
 }
 
 void _glfwPlatformSetWindowResizable(_GLFWwindow* window, GLFWbool enabled)
 {
     // TODO
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Window attribute setting not implemented yet");
 }
 
 void _glfwPlatformSetWindowDecorated(_GLFWwindow* window, GLFWbool enabled)
 {
     // TODO
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Window attribute setting not implemented yet");
 }
 
 void _glfwPlatformSetWindowFloating(_GLFWwindow* window, GLFWbool enabled)
 {
     // TODO
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Window attribute setting not implemented yet");
 }
 
 void _glfwPlatformPollEvents(void)
 {
     handleEvents(0);
 }
 
 void _glfwPlatformWaitEvents(void)
 {
     handleEvents(-1);
 }
 
 void _glfwPlatformWaitEventsTimeout(double timeout)
 {
     handleEvents((int) (timeout * 1e3));
 }
 
 void _glfwPlatformPostEmptyEvent(void)
 {
     wl_display_sync(_glfw.wl.display);
 }
 
 void _glfwPlatformGetCursorPos(_GLFWwindow* window, double* xpos, double* ypos)
 {
     if (xpos)
         *xpos = window->wl.cursorPosX;
     if (ypos)
         *ypos = window->wl.cursorPosY;
 }
 
 static GLFWbool isPointerLocked(_GLFWwindow* window);
 
 void _glfwPlatformSetCursorPos(_GLFWwindow* window, double x, double y)
 {
     if (isPointerLocked(window))
     {
         zwp_locked_pointer_v1_set_cursor_position_hint(
             window->wl.pointerLock.lockedPointer,
             wl_fixed_from_double(x), wl_fixed_from_double(y));
         wl_surface_commit(window->wl.surface);
     }
 }
 
 void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode)
 {
     _glfwPlatformSetCursor(window, window->wl.currentCursor);
 }
 
 const char* _glfwPlatformGetScancodeName(int scancode)
 {
     // TODO
     return NULL;
 }
 
 int _glfwPlatformGetKeyScancode(int key)
 {
     return _glfw.wl.scancodes[key];
 }
 
 int _glfwPlatformCreateCursor(_GLFWcursor* cursor,
                               const GLFWimage* image,
                               int xhot, int yhot)
 {
     struct wl_shm_pool* pool;
     int stride = image->width * 4;
     int length = image->width * image->height * 4;
     void* data;
     int fd, i;
 
     fd = createAnonymousFile(length);
     if (fd < 0)
     {
         _glfwInputError(GLFW_PLATFORM_ERROR,
                         "Wayland: Creating a buffer file for %d B failed: %m",
                         length);
         return GLFW_FALSE;
     }
 
     data = mmap(NULL, length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
     if (data == MAP_FAILED)
     {
         _glfwInputError(GLFW_PLATFORM_ERROR,
                         "Wayland: Cursor mmap failed: %m");
         close(fd);
         return GLFW_FALSE;
     }
 
     pool = wl_shm_create_pool(_glfw.wl.shm, fd, length);
 
     close(fd);
     unsigned char* source = (unsigned char*) image->pixels;
     unsigned char* target = data;
     for (i = 0;  i < image->width * image->height;  i++, source += 4)
     {
         unsigned int alpha = source[3];
 
         *target++ = (unsigned char) ((source[2] * alpha) / 255);
         *target++ = (unsigned char) ((source[1] * alpha) / 255);
         *target++ = (unsigned char) ((source[0] * alpha) / 255);
         *target++ = (unsigned char) alpha;
     }
 
     cursor->wl.buffer =
         wl_shm_pool_create_buffer(pool, 0,
                                   image->width,
                                   image->height,
                                   stride, WL_SHM_FORMAT_ARGB8888);
     munmap(data, length);
     wl_shm_pool_destroy(pool);
 
     cursor->wl.width = image->width;
     cursor->wl.height = image->height;
     cursor->wl.xhot = xhot;
     cursor->wl.yhot = yhot;
     return GLFW_TRUE;
 }
 
 int _glfwPlatformCreateStandardCursor(_GLFWcursor* cursor, int shape)
 {
     struct wl_cursor* standardCursor;
 
     standardCursor = wl_cursor_theme_get_cursor(_glfw.wl.cursorTheme,
                                                 translateCursorShape(shape));
     if (!standardCursor)
     {
         _glfwInputError(GLFW_PLATFORM_ERROR,
                         "Wayland: Standard cursor \"%s\" not found",
                         translateCursorShape(shape));
         return GLFW_FALSE;
     }
 
     cursor->wl.image = standardCursor->images[0];
     return GLFW_TRUE;
 }
 
 void _glfwPlatformDestroyCursor(_GLFWcursor* cursor)
 {
     // If it's a standard cursor we don't need to do anything here
     if (cursor->wl.image)
         return;
 
     if (cursor->wl.buffer)
         wl_buffer_destroy(cursor->wl.buffer);
 }
 
 static void handleRelativeMotion(void* data,
                                  struct zwp_relative_pointer_v1* pointer,
                                  uint32_t timeHi,
                                  uint32_t timeLo,
                                  wl_fixed_t dx,
                                  wl_fixed_t dy,
                                  wl_fixed_t dxUnaccel,
                                  wl_fixed_t dyUnaccel)
 {
     _GLFWwindow* window = data;
 
     if (window->cursorMode != GLFW_CURSOR_DISABLED)
         return;
 
     _glfwInputCursorPos(window,
                         window->virtualCursorPosX + wl_fixed_to_double(dxUnaccel),
                         window->virtualCursorPosY + wl_fixed_to_double(dyUnaccel));
 }
 
 static const struct zwp_relative_pointer_v1_listener relativePointerListener = {
     handleRelativeMotion
 };
 
 static void handleLocked(void* data,
                          struct zwp_locked_pointer_v1* lockedPointer)
 {
 }
 
 static void unlockPointer(_GLFWwindow* window)
 {
     struct zwp_relative_pointer_v1* relativePointer =
         window->wl.pointerLock.relativePointer;
     struct zwp_locked_pointer_v1* lockedPointer =
         window->wl.pointerLock.lockedPointer;
 
     zwp_relative_pointer_v1_destroy(relativePointer);
     zwp_locked_pointer_v1_destroy(lockedPointer);
 
     window->wl.pointerLock.relativePointer = NULL;
     window->wl.pointerLock.lockedPointer = NULL;
 }
 
 static void lockPointer(_GLFWwindow* window);
 
 static void handleUnlocked(void* data,
                            struct zwp_locked_pointer_v1* lockedPointer)
 {
 }
 
 static const struct zwp_locked_pointer_v1_listener lockedPointerListener = {
     handleLocked,
     handleUnlocked
 };
 
 static void lockPointer(_GLFWwindow* window)
 {
     struct zwp_relative_pointer_v1* relativePointer;
     struct zwp_locked_pointer_v1* lockedPointer;
 
     if (!_glfw.wl.relativePointerManager)
     {
         _glfwInputError(GLFW_PLATFORM_ERROR,
                         "Wayland: no relative pointer manager");
         return;
     }
 
     relativePointer =
         zwp_relative_pointer_manager_v1_get_relative_pointer(
             _glfw.wl.relativePointerManager,
             _glfw.wl.pointer);
     zwp_relative_pointer_v1_add_listener(relativePointer,
                                          &relativePointerListener,
                                          window);
 
     lockedPointer =
         zwp_pointer_constraints_v1_lock_pointer(
             _glfw.wl.pointerConstraints,
             window->wl.surface,
             _glfw.wl.pointer,
             NULL,
             ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_PERSISTENT);
     zwp_locked_pointer_v1_add_listener(lockedPointer,
                                        &lockedPointerListener,
                                        window);
 
     window->wl.pointerLock.relativePointer = relativePointer;
     window->wl.pointerLock.lockedPointer = lockedPointer;
 
     wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.pointerSerial,
                           NULL, 0, 0);
 }
 
 static GLFWbool isPointerLocked(_GLFWwindow* window)
 {
     return window->wl.pointerLock.lockedPointer != NULL;
 }
 
 void _glfwPlatformSetCursor(_GLFWwindow* window, _GLFWcursor* cursor)
 {
     struct wl_buffer* buffer;
     struct wl_cursor* defaultCursor;
     struct wl_cursor_image* image;
     struct wl_surface* surface = _glfw.wl.cursorSurface;
 
     if (!_glfw.wl.pointer)
         return;
 
     window->wl.currentCursor = cursor;
 
     // If we're not in the correct window just save the cursor
     // the next time the pointer enters the window the cursor will change
     if (window != _glfw.wl.pointerFocus)
         return;
 
     // Unlock possible pointer lock if no longer disabled.
     if (window->cursorMode != GLFW_CURSOR_DISABLED && isPointerLocked(window))
         unlockPointer(window);
 
     if (window->cursorMode == GLFW_CURSOR_NORMAL)
     {
         if (cursor)
             image = cursor->wl.image;
         else
         {
             defaultCursor = wl_cursor_theme_get_cursor(_glfw.wl.cursorTheme,
                                                        "left_ptr");
             if (!defaultCursor)
             {
                 _glfwInputError(GLFW_PLATFORM_ERROR,
                                 "Wayland: Standard cursor not found");
                 return;
             }
             image = defaultCursor->images[0];
         }
 
         if (image)
         {
             buffer = wl_cursor_image_get_buffer(image);
             if (!buffer)
                 return;
             wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.pointerSerial,
                                   surface,
                                   image->hotspot_x,
                                   image->hotspot_y);
             wl_surface_attach(surface, buffer, 0, 0);
             wl_surface_damage(surface, 0, 0,
                               image->width, image->height);
             wl_surface_commit(surface);
         }
         else
         {
             wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.pointerSerial,
                                   surface,
                                   cursor->wl.xhot,
                                   cursor->wl.yhot);
             wl_surface_attach(surface, cursor->wl.buffer, 0, 0);
             wl_surface_damage(surface, 0, 0,
                               cursor->wl.width, cursor->wl.height);
             wl_surface_commit(surface);
         }
     }
     else if (window->cursorMode == GLFW_CURSOR_DISABLED)
     {
         if (!isPointerLocked(window))
             lockPointer(window);
     }
     else if (window->cursorMode == GLFW_CURSOR_HIDDEN)
     {
         wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.pointerSerial,
                               NULL, 0, 0);
     }
 }
 
 void _glfwPlatformSetClipboardString(_GLFWwindow* window, const char* string)
 {
     // TODO
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Clipboard setting not implemented yet");
 }
 
 const char* _glfwPlatformGetClipboardString(_GLFWwindow* window)
 {
     // TODO
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Clipboard getting not implemented yet");
     return NULL;
 }
 
 void _glfwPlatformGetRequiredInstanceExtensions(char** extensions)
 {
     if (!_glfw.vk.KHR_surface || !_glfw.vk.KHR_wayland_surface)
         return;
 
     extensions[0] = "VK_KHR_surface";
     extensions[1] = "VK_KHR_wayland_surface";
 }
 
 int _glfwPlatformGetPhysicalDevicePresentationSupport(VkInstance instance,
                                                       VkPhysicalDevice device,
                                                       uint32_t queuefamily)
 {
     PFN_vkGetPhysicalDeviceWaylandPresentationSupportKHR vkGetPhysicalDeviceWaylandPresentationSupportKHR =
         (PFN_vkGetPhysicalDeviceWaylandPresentationSupportKHR)
         vkGetInstanceProcAddr(instance, "vkGetPhysicalDeviceWaylandPresentationSupportKHR");
     if (!vkGetPhysicalDeviceWaylandPresentationSupportKHR)
     {
         _glfwInputError(GLFW_API_UNAVAILABLE,
                         "Wayland: Vulkan instance missing VK_KHR_wayland_surface extension");
         return VK_NULL_HANDLE;
     }
 
     return vkGetPhysicalDeviceWaylandPresentationSupportKHR(device,
                                                             queuefamily,
                                                             _glfw.wl.display);
 }
 
 VkResult _glfwPlatformCreateWindowSurface(VkInstance instance,
                                           _GLFWwindow* window,
                                           const VkAllocationCallbacks* allocator,
                                           VkSurfaceKHR* surface)
 {
     VkResult err;
     VkWaylandSurfaceCreateInfoKHR sci;
     PFN_vkCreateWaylandSurfaceKHR vkCreateWaylandSurfaceKHR;
 
     vkCreateWaylandSurfaceKHR = (PFN_vkCreateWaylandSurfaceKHR)
         vkGetInstanceProcAddr(instance, "vkCreateWaylandSurfaceKHR");
     if (!vkCreateWaylandSurfaceKHR)
     {
         _glfwInputError(GLFW_API_UNAVAILABLE,
                         "Wayland: Vulkan instance missing VK_KHR_wayland_surface extension");
         return VK_ERROR_EXTENSION_NOT_PRESENT;
     }
 
     memset(&sci, 0, sizeof(sci));
     sci.sType = VK_STRUCTURE_TYPE_WAYLAND_SURFACE_CREATE_INFO_KHR;
     sci.display = _glfw.wl.display;
     sci.surface = window->wl.surface;
 
     err = vkCreateWaylandSurfaceKHR(instance, &sci, allocator, surface);
     if (err)
     {
         _glfwInputError(GLFW_PLATFORM_ERROR,
                         "Wayland: Failed to create Vulkan surface: %s",
                         _glfwGetVulkanResultString(err));
     }
 
     return err;
 }
 
 
 //////////////////////////////////////////////////////////////////////////
 //////                        GLFW native API                       //////
 //////////////////////////////////////////////////////////////////////////
 
 GLFWAPI struct wl_display* glfwGetWaylandDisplay(void)
 {
     _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
     return _glfw.wl.display;
 }
 
 GLFWAPI struct wl_surface* glfwGetWaylandWindow(GLFWwindow* handle)
 {
     _GLFWwindow* window = (_GLFWwindow*) handle;
     _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
     return window->wl.surface;
 }