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BLT-With-Graphics-Template/libraries/glfw-3.3.8/src/wl_window.c

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glfw init
2023-11-28 00:44:47 -05:00
//========================================================================
// 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.
//
//========================================================================
// It is fine to use C99 in this file because it will not be built with VS
//========================================================================
#define _GNU_SOURCE
#include "internal.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <assert.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/timerfd.h>
#include <poll.h>
#include <signal.h>
#include <time.h>
#define GLFW_BORDER_SIZE 4
#define GLFW_CAPTION_HEIGHT 24
static int createTmpfileCloexec(char* tmpname)
{
int fd;
fd = mkostemp(tmpname, O_CLOEXEC);
if (fd >= 0)
unlink(tmpname);
return fd;
}
/*
* 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 insufficient, errno
* is set to ENOSPC. If posix_fallocate() is not supported, program may
* receive SIGBUS on accessing mmap()'ed file contents instead.
*/
static int createAnonymousFile(off_t size)
{
static const char template[] = "/glfw-shared-XXXXXX";
const char* path;
char* name;
int fd;
int ret;
#ifdef HAVE_MEMFD_CREATE
fd = memfd_create("glfw-shared", MFD_CLOEXEC | MFD_ALLOW_SEALING);
if (fd >= 0)
{
// We can add this seal before calling posix_fallocate(), as the file
// is currently zero-sized anyway.
//
// There is also no need to check for the return value, we couldn’t do
// anything with it anyway.
fcntl(fd, F_ADD_SEALS, F_SEAL_SHRINK | F_SEAL_SEAL);
}
else
#elif defined(SHM_ANON)
fd = shm_open(SHM_ANON, O_RDWR | O_CLOEXEC, 0600);
if (fd < 0)
#endif
{
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;
}
#if defined(SHM_ANON)
// posix_fallocate does not work on SHM descriptors
ret = ftruncate(fd, size);
#else
ret = posix_fallocate(fd, 0, size);
#endif
if (ret != 0)
{
close(fd);
errno = ret;
return -1;
}
return fd;
}
static struct wl_buffer* createShmBuffer(const GLFWimage* image)
{
struct wl_shm_pool* pool;
struct wl_buffer* buffer;
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: Failed to create buffer file of size %d: %s",
length, strerror(errno));
return NULL;
}
data = mmap(NULL, length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (data == MAP_FAILED)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to map file: %s", strerror(errno));
close(fd);
return NULL;
}
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;
}
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);
return buffer;
}
// Wait for data to arrive on any of the specified file descriptors
//
static GLFWbool waitForData(struct pollfd* fds, nfds_t count, double* timeout)
{
for (;;)
{
if (timeout)
{
const uint64_t base = _glfwPlatformGetTimerValue();
#if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__CYGWIN__)
const time_t seconds = (time_t) *timeout;
const long nanoseconds = (long) ((*timeout - seconds) * 1e9);
const struct timespec ts = { seconds, nanoseconds };
const int result = ppoll(fds, count, &ts, NULL);
#elif defined(__NetBSD__)
const time_t seconds = (time_t) *timeout;
const long nanoseconds = (long) ((*timeout - seconds) * 1e9);
const struct timespec ts = { seconds, nanoseconds };
const int result = pollts(fds, count, &ts, NULL);
#else
const int milliseconds = (int) (*timeout * 1e3);
const int result = poll(fds, count, milliseconds);
#endif
const int error = errno; // clock_gettime may overwrite our error
*timeout -= (_glfwPlatformGetTimerValue() - base) /
(double) _glfwPlatformGetTimerFrequency();
if (result > 0)
return GLFW_TRUE;
else if (result == -1 && error != EINTR && error != EAGAIN)
return GLFW_FALSE;
else if (*timeout <= 0.0)
return GLFW_FALSE;
}
else
{
const int result = poll(fds, count, -1);
if (result > 0)
return GLFW_TRUE;
else if (result == -1 && errno != EINTR && errno != EAGAIN)
return GLFW_FALSE;
}
}
}
static void createFallbackDecoration(_GLFWdecorationWayland* decoration,
struct wl_surface* parent,
struct wl_buffer* buffer,
int x, int y,
int width, int height)
{
decoration->surface = wl_compositor_create_surface(_glfw.wl.compositor);
decoration->subsurface =
wl_subcompositor_get_subsurface(_glfw.wl.subcompositor,
decoration->surface, parent);
wl_subsurface_set_position(decoration->subsurface, x, y);
decoration->viewport = wp_viewporter_get_viewport(_glfw.wl.viewporter,
decoration->surface);
wp_viewport_set_destination(decoration->viewport, width, height);
wl_surface_attach(decoration->surface, buffer, 0, 0);
struct wl_region* region = wl_compositor_create_region(_glfw.wl.compositor);
wl_region_add(region, 0, 0, width, height);
wl_surface_set_opaque_region(decoration->surface, region);
wl_surface_commit(decoration->surface);
wl_region_destroy(region);
}
static void createFallbackDecorations(_GLFWwindow* window)
{
unsigned char data[] = { 224, 224, 224, 255 };
const GLFWimage image = { 1, 1, data };
if (!_glfw.wl.viewporter)
return;
if (!window->wl.decorations.buffer)
window->wl.decorations.buffer = createShmBuffer(&image);
if (!window->wl.decorations.buffer)
return;
createFallbackDecoration(&window->wl.decorations.top, window->wl.surface,
window->wl.decorations.buffer,
0, -GLFW_CAPTION_HEIGHT,
window->wl.width, GLFW_CAPTION_HEIGHT);
createFallbackDecoration(&window->wl.decorations.left, window->wl.surface,
window->wl.decorations.buffer,
-GLFW_BORDER_SIZE, -GLFW_CAPTION_HEIGHT,
GLFW_BORDER_SIZE, window->wl.height + GLFW_CAPTION_HEIGHT);
createFallbackDecoration(&window->wl.decorations.right, window->wl.surface,
window->wl.decorations.buffer,
window->wl.width, -GLFW_CAPTION_HEIGHT,
GLFW_BORDER_SIZE, window->wl.height + GLFW_CAPTION_HEIGHT);
createFallbackDecoration(&window->wl.decorations.bottom, window->wl.surface,
window->wl.decorations.buffer,
-GLFW_BORDER_SIZE, window->wl.height,
window->wl.width + GLFW_BORDER_SIZE * 2, GLFW_BORDER_SIZE);
}
static void destroyFallbackDecoration(_GLFWdecorationWayland* decoration)
{
if (decoration->subsurface)
wl_subsurface_destroy(decoration->subsurface);
if (decoration->surface)
wl_surface_destroy(decoration->surface);
if (decoration->viewport)
wp_viewport_destroy(decoration->viewport);
decoration->surface = NULL;
decoration->subsurface = NULL;
decoration->viewport = NULL;
}
static void destroyFallbackDecorations(_GLFWwindow* window)
{
destroyFallbackDecoration(&window->wl.decorations.top);
destroyFallbackDecoration(&window->wl.decorations.left);
destroyFallbackDecoration(&window->wl.decorations.right);
destroyFallbackDecoration(&window->wl.decorations.bottom);
}
static void xdgDecorationHandleConfigure(void* userData,
struct zxdg_toplevel_decoration_v1* decoration,
uint32_t mode)
{
_GLFWwindow* window = userData;
window->wl.xdg.decorationMode = mode;
if (mode == ZXDG_TOPLEVEL_DECORATION_V1_MODE_CLIENT_SIDE)
{
if (window->decorated && !window->monitor)
createFallbackDecorations(window);
}
else
destroyFallbackDecorations(window);
}
static const struct zxdg_toplevel_decoration_v1_listener xdgDecorationListener =
{
xdgDecorationHandleConfigure,
};
// Makes the surface considered as XRGB instead of ARGB.
static void setContentAreaOpaque(_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_region_destroy(region);
}
static void resizeWindow(_GLFWwindow* window)
{
int scale = window->wl.scale;
int scaledWidth = window->wl.width * scale;
int scaledHeight = window->wl.height * scale;
if (window->wl.egl.window)
wl_egl_window_resize(window->wl.egl.window, scaledWidth, scaledHeight, 0, 0);
if (!window->wl.transparent)
setContentAreaOpaque(window);
_glfwInputFramebufferSize(window, scaledWidth, scaledHeight);
if (!window->wl.decorations.top.surface)
return;
wp_viewport_set_destination(window->wl.decorations.top.viewport,
window->wl.width, GLFW_CAPTION_HEIGHT);
wl_surface_commit(window->wl.decorations.top.surface);
wp_viewport_set_destination(window->wl.decorations.left.viewport,
GLFW_BORDER_SIZE, window->wl.height + GLFW_CAPTION_HEIGHT);
wl_surface_commit(window->wl.decorations.left.surface);
wl_subsurface_set_position(window->wl.decorations.right.subsurface,
window->wl.width, -GLFW_CAPTION_HEIGHT);
wp_viewport_set_destination(window->wl.decorations.right.viewport,
GLFW_BORDER_SIZE, window->wl.height + GLFW_CAPTION_HEIGHT);
wl_surface_commit(window->wl.decorations.right.surface);
wl_subsurface_set_position(window->wl.decorations.bottom.subsurface,
-GLFW_BORDER_SIZE, window->wl.height);
wp_viewport_set_destination(window->wl.decorations.bottom.viewport,
window->wl.width + GLFW_BORDER_SIZE * 2, GLFW_BORDER_SIZE);
wl_surface_commit(window->wl.decorations.bottom.surface);
}
void _glfwUpdateContentScaleWayland(_GLFWwindow* window)
{
if (_glfw.wl.compositorVersion < WL_SURFACE_SET_BUFFER_SCALE_SINCE_VERSION)
return;
// Get the scale factor from the highest scale monitor.
int maxScale = 1;
for (int i = 0; i < window->wl.monitorsCount; i++)
maxScale = _glfw_max(window->wl.monitors[i]->wl.scale, maxScale);
// Only change the framebuffer size if the scale changed.
if (window->wl.scale != maxScale)
{
window->wl.scale = maxScale;
wl_surface_set_buffer_scale(window->wl.surface, maxScale);
_glfwInputWindowContentScale(window, maxScale, maxScale);
resizeWindow(window);
}
}
static void surfaceHandleEnter(void* userData,
struct wl_surface* surface,
struct wl_output* output)
{
_GLFWwindow* window = userData;
_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;
_glfwUpdateContentScaleWayland(window);
}
static void surfaceHandleLeave(void* userData,
struct wl_surface* surface,
struct wl_output* output)
{
_GLFWwindow* window = userData;
_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;
_glfwUpdateContentScaleWayland(window);
}
static const struct wl_surface_listener surfaceListener =
{
surfaceHandleEnter,
surfaceHandleLeave
};
static void setIdleInhibitor(_GLFWwindow* window, GLFWbool enable)
{
if (enable && !window->wl.idleInhibitor && _glfw.wl.idleInhibitManager)
{
window->wl.idleInhibitor =
zwp_idle_inhibit_manager_v1_create_inhibitor(
_glfw.wl.idleInhibitManager, window->wl.surface);
if (!window->wl.idleInhibitor)
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to create idle inhibitor");
}
else if (!enable && window->wl.idleInhibitor)
{
zwp_idle_inhibitor_v1_destroy(window->wl.idleInhibitor);
window->wl.idleInhibitor = NULL;
}
}
// Make the specified window and its video mode active on its monitor
//
static void acquireMonitor(_GLFWwindow* window)
{
if (window->wl.xdg.toplevel)
{
xdg_toplevel_set_fullscreen(window->wl.xdg.toplevel,
window->monitor->wl.output);
}
setIdleInhibitor(window, GLFW_TRUE);
if (window->wl.decorations.top.surface)
destroyFallbackDecorations(window);
}
// Remove the window and restore the original video mode
//
static void releaseMonitor(_GLFWwindow* window)
{
if (window->wl.xdg.toplevel)
xdg_toplevel_unset_fullscreen(window->wl.xdg.toplevel);
setIdleInhibitor(window, GLFW_FALSE);
if (window->wl.xdg.decorationMode != ZXDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE)
{
if (window->decorated)
createFallbackDecorations(window);
}
}
static void xdgToplevelHandleConfigure(void* userData,
struct xdg_toplevel* toplevel,
int32_t width,
int32_t height,
struct wl_array* states)
{
_GLFWwindow* window = userData;
uint32_t* state;
window->wl.pending.activated = GLFW_FALSE;
window->wl.pending.maximized = GLFW_FALSE;
window->wl.pending.fullscreen = GLFW_FALSE;
wl_array_for_each(state, states)
{
switch (*state)
{
case XDG_TOPLEVEL_STATE_MAXIMIZED:
window->wl.pending.maximized = GLFW_TRUE;
break;
case XDG_TOPLEVEL_STATE_FULLSCREEN:
window->wl.pending.fullscreen = GLFW_TRUE;
break;
case XDG_TOPLEVEL_STATE_RESIZING:
break;
case XDG_TOPLEVEL_STATE_ACTIVATED:
window->wl.pending.activated = GLFW_TRUE;
break;
}
}
if (width && height)
{
if (window->wl.decorations.top.surface)
{
window->wl.pending.width = _glfw_max(0, width - GLFW_BORDER_SIZE * 2);
window->wl.pending.height =
_glfw_max(0, height - GLFW_BORDER_SIZE - GLFW_CAPTION_HEIGHT);
}
else
{
window->wl.pending.width = width;
window->wl.pending.height = height;
}
}
else
{
window->wl.pending.width = window->wl.width;
window->wl.pending.height = window->wl.height;
}
}
static void xdgToplevelHandleClose(void* userData,
struct xdg_toplevel* toplevel)
{
_GLFWwindow* window = userData;
_glfwInputWindowCloseRequest(window);
}
static const struct xdg_toplevel_listener xdgToplevelListener =
{
xdgToplevelHandleConfigure,
xdgToplevelHandleClose
};
static void xdgSurfaceHandleConfigure(void* userData,
struct xdg_surface* surface,
uint32_t serial)
{
_GLFWwindow* window = userData;
xdg_surface_ack_configure(surface, serial);
if (window->wl.activated != window->wl.pending.activated)
{
window->wl.activated = window->wl.pending.activated;
if (!window->wl.activated)
{
if (window->monitor && window->autoIconify)
xdg_toplevel_set_minimized(window->wl.xdg.toplevel);
}
}
if (window->wl.maximized != window->wl.pending.maximized)
{
window->wl.maximized = window->wl.pending.maximized;
_glfwInputWindowMaximize(window, window->wl.maximized);
}
window->wl.fullscreen = window->wl.pending.fullscreen;
int width = window->wl.pending.width;
int height = window->wl.pending.height;
if (!window->wl.maximized && !window->wl.fullscreen)
{
if (window->numer != GLFW_DONT_CARE && window->denom != GLFW_DONT_CARE)
{
const float aspectRatio = (float) width / (float) height;
const float targetRatio = (float) window->numer / (float) window->denom;
if (aspectRatio < targetRatio)
height = width / targetRatio;
else if (aspectRatio > targetRatio)
width = height * targetRatio;
}
}
if (width != window->wl.width || height != window->wl.height)
{
window->wl.width = width;
window->wl.height = height;
resizeWindow(window);
_glfwInputWindowSize(window, width, height);
if (window->wl.visible)
_glfwInputWindowDamage(window);
}
if (!window->wl.visible)
{
// Allow the window to be mapped only if it either has no XDG
// decorations or they have already received a configure event
if (!window->wl.xdg.decoration || window->wl.xdg.decorationMode)
{
window->wl.visible = GLFW_TRUE;
_glfwInputWindowDamage(window);
}
}
}
static const struct xdg_surface_listener xdgSurfaceListener =
{
xdgSurfaceHandleConfigure
};
static GLFWbool createShellObjects(_GLFWwindow* window)
{
window->wl.xdg.surface = xdg_wm_base_get_xdg_surface(_glfw.wl.wmBase,
window->wl.surface);
if (!window->wl.xdg.surface)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to create xdg-surface for window");
return GLFW_FALSE;
}
xdg_surface_add_listener(window->wl.xdg.surface, &xdgSurfaceListener, window);
window->wl.xdg.toplevel = xdg_surface_get_toplevel(window->wl.xdg.surface);
if (!window->wl.xdg.toplevel)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to create xdg-toplevel for window");
return GLFW_FALSE;
}
xdg_toplevel_add_listener(window->wl.xdg.toplevel, &xdgToplevelListener, window);
if (window->wl.title)
xdg_toplevel_set_title(window->wl.xdg.toplevel, window->wl.title);
if (window->monitor)
{
xdg_toplevel_set_fullscreen(window->wl.xdg.toplevel, window->monitor->wl.output);
setIdleInhibitor(window, GLFW_TRUE);
}
else
{
if (window->wl.maximized)
xdg_toplevel_set_maximized(window->wl.xdg.toplevel);
setIdleInhibitor(window, GLFW_FALSE);
if (_glfw.wl.decorationManager)
{
window->wl.xdg.decoration =
zxdg_decoration_manager_v1_get_toplevel_decoration(
_glfw.wl.decorationManager, window->wl.xdg.toplevel);
zxdg_toplevel_decoration_v1_add_listener(window->wl.xdg.decoration,
&xdgDecorationListener,
window);
uint32_t mode;
if (window->decorated)
mode = ZXDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE;
else
mode = ZXDG_TOPLEVEL_DECORATION_V1_MODE_CLIENT_SIDE;
zxdg_toplevel_decoration_v1_set_mode(window->wl.xdg.decoration, mode);
}
else
{
if (window->decorated)
createFallbackDecorations(window);
}
}
if (window->minwidth != GLFW_DONT_CARE && window->minheight != GLFW_DONT_CARE)
{
int minwidth = window->minwidth;
int minheight = window->minheight;
if (window->wl.decorations.top.surface)
{
minwidth += GLFW_BORDER_SIZE * 2;
minheight += GLFW_CAPTION_HEIGHT + GLFW_BORDER_SIZE;
}
xdg_toplevel_set_min_size(window->wl.xdg.toplevel, minwidth, minheight);
}
if (window->maxwidth != GLFW_DONT_CARE && window->maxheight != GLFW_DONT_CARE)
{
int maxwidth = window->maxwidth;
int maxheight = window->maxheight;
if (window->wl.decorations.top.surface)
{
maxwidth += GLFW_BORDER_SIZE * 2;
maxheight += GLFW_CAPTION_HEIGHT + GLFW_BORDER_SIZE;
}
xdg_toplevel_set_max_size(window->wl.xdg.toplevel, maxwidth, maxheight);
}
wl_surface_commit(window->wl.surface);
wl_display_roundtrip(_glfw.wl.display);
return GLFW_TRUE;
}
static void destroyShellObjects(_GLFWwindow* window)
{
destroyFallbackDecorations(window);
if (window->wl.xdg.decoration)
zxdg_toplevel_decoration_v1_destroy(window->wl.xdg.decoration);
if (window->wl.xdg.toplevel)
xdg_toplevel_destroy(window->wl.xdg.toplevel);
if (window->wl.xdg.surface)
xdg_surface_destroy(window->wl.xdg.surface);
window->wl.xdg.decoration = NULL;
window->wl.xdg.decorationMode = 0;
window->wl.xdg.toplevel = NULL;
window->wl.xdg.surface = NULL;
}
static GLFWbool createNativeSurface(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
const _GLFWfbconfig* fbconfig)
{
window->wl.surface = wl_compositor_create_surface(_glfw.wl.compositor);
if (!window->wl.surface)
{
_glfwInputError(GLFW_PLATFORM_ERROR, "Wayland: Failed to create window surface");
return GLFW_FALSE;
}
wl_surface_add_listener(window->wl.surface,
&surfaceListener,
window);
wl_surface_set_user_data(window->wl.surface, window);
window->wl.width = wndconfig->width;
window->wl.height = wndconfig->height;
window->wl.scale = 1;
window->wl.title = _glfw_strdup(wndconfig->title);
window->wl.maximized = wndconfig->maximized;
window->wl.transparent = fbconfig->transparent;
if (!window->wl.transparent)
setContentAreaOpaque(window);
return GLFW_TRUE;
}
static void setCursorImage(_GLFWwindow* window,
_GLFWcursorWayland* cursorWayland)
{
struct itimerspec timer = {};
struct wl_cursor* wlCursor = cursorWayland->cursor;
struct wl_cursor_image* image;
struct wl_buffer* buffer;
struct wl_surface* surface = _glfw.wl.cursorSurface;
int scale = 1;
if (!wlCursor)
buffer = cursorWayland->buffer;
else
{
if (window->wl.scale > 1 && cursorWayland->cursorHiDPI)
{
wlCursor = cursorWayland->cursorHiDPI;
scale = 2;
}
image = wlCursor->images[cursorWayland->currentImage];
buffer = wl_cursor_image_get_buffer(image);
if (!buffer)
return;
timer.it_value.tv_sec = image->delay / 1000;
timer.it_value.tv_nsec = (image->delay % 1000) * 1000000;
timerfd_settime(_glfw.wl.cursorTimerfd, 0, &timer, NULL);
cursorWayland->width = image->width;
cursorWayland->height = image->height;
cursorWayland->xhot = image->hotspot_x;
cursorWayland->yhot = image->hotspot_y;
}
wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.pointerEnterSerial,
surface,
cursorWayland->xhot / scale,
cursorWayland->yhot / scale);
wl_surface_set_buffer_scale(surface, scale);
wl_surface_attach(surface, buffer, 0, 0);
wl_surface_damage(surface, 0, 0,
cursorWayland->width, cursorWayland->height);
wl_surface_commit(surface);
}
static void incrementCursorImage(_GLFWwindow* window)
{
_GLFWcursor* cursor;
if (!window || window->wl.decorations.focus != mainWindow)
return;
cursor = window->wl.currentCursor;
if (cursor && cursor->wl.cursor)
{
cursor->wl.currentImage += 1;
cursor->wl.currentImage %= cursor->wl.cursor->image_count;
setCursorImage(window, &cursor->wl);
}
}
static GLFWbool flushDisplay(void)
{
while (wl_display_flush(_glfw.wl.display) == -1)
{
if (errno != EAGAIN)
return GLFW_FALSE;
struct pollfd fd = { wl_display_get_fd(_glfw.wl.display), POLLOUT };
while (poll(&fd, 1, -1) == -1)
{
if (errno != EINTR && errno != EAGAIN)
return GLFW_FALSE;
}
}
return GLFW_TRUE;
}
static void handleEvents(double* timeout)
{
GLFWbool event = GLFW_FALSE;
struct pollfd fds[] =
{
{ wl_display_get_fd(_glfw.wl.display), POLLIN },
{ _glfw.wl.timerfd, POLLIN },
{ _glfw.wl.cursorTimerfd, POLLIN },
};
while (!event)
{
while (wl_display_prepare_read(_glfw.wl.display) != 0)
wl_display_dispatch_pending(_glfw.wl.display);
// If an error other than EAGAIN happens, we have likely been disconnected
// from the Wayland session; try to handle that the best we can.
if (!flushDisplay())
{
wl_display_cancel_read(_glfw.wl.display);
_GLFWwindow* window = _glfw.windowListHead;
while (window)
{
_glfwInputWindowCloseRequest(window);
window = window->next;
}
return;
}
if (!waitForData(fds, 3, timeout))
{
wl_display_cancel_read(_glfw.wl.display);
return;
}
if (fds[0].revents & POLLIN)
{
wl_display_read_events(_glfw.wl.display);
if (wl_display_dispatch_pending(_glfw.wl.display) > 0)
event = GLFW_TRUE;
}
else
wl_display_cancel_read(_glfw.wl.display);
if (fds[1].revents & POLLIN)
{
uint64_t repeats;
if (read(_glfw.wl.timerfd, &repeats, sizeof(repeats)) == 8)
{
for (uint64_t i = 0; i < repeats; i++)
{
_glfwInputKey(_glfw.wl.keyboardFocus,
_glfw.wl.keyboardLastKey,
_glfw.wl.keyboardLastScancode,
GLFW_PRESS,
_glfw.wl.xkb.modifiers);
_glfwInputTextWayland(_glfw.wl.keyboardFocus,
_glfw.wl.keyboardLastScancode);
}
event = GLFW_TRUE;
}
}
if (fds[2].revents & POLLIN)
{
uint64_t repeats;
if (read(_glfw.wl.cursorTimerfd, &repeats, sizeof(repeats)) == 8)
{
incrementCursorImage(_glfw.wl.pointerFocus);
event = GLFW_TRUE;
}
}
}
}
// Reads the specified data offer as the specified MIME type
//
static char* readDataOfferAsString(struct wl_data_offer* offer, const char* mimeType)
{
int fds[2];
if (pipe2(fds, O_CLOEXEC) == -1)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to create pipe for data offer: %s",
strerror(errno));
return NULL;
}
wl_data_offer_receive(offer, mimeType, fds[1]);
flushDisplay();
close(fds[1]);
char* string = NULL;
size_t size = 0;
size_t length = 0;
for (;;)
{
const size_t readSize = 4096;
const size_t requiredSize = length + readSize + 1;
if (requiredSize > size)
{
char* longer = realloc(string, requiredSize);
if (!longer)
{
_glfwInputError(GLFW_OUT_OF_MEMORY, NULL);
close(fds[0]);
return NULL;
}
string = longer;
size = requiredSize;
}
const ssize_t result = read(fds[0], string + length, readSize);
if (result == 0)
break;
else if (result == -1)
{
if (errno == EINTR)
continue;
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to read from data offer pipe: %s",
strerror(errno));
close(fds[0]);
return NULL;
}
length += result;
}
close(fds[0]);
string[length] = '\0';
return string;
}
static _GLFWwindow* findWindowFromDecorationSurface(struct wl_surface* surface,
_GLFWdecorationSideWayland* which)
{
_GLFWdecorationSideWayland focus;
_GLFWwindow* window = _glfw.windowListHead;
if (!which)
which = &focus;
while (window)
{
if (surface == window->wl.decorations.top.surface)
{
*which = topDecoration;
break;
}
if (surface == window->wl.decorations.left.surface)
{
*which = leftDecoration;
break;
}
if (surface == window->wl.decorations.right.surface)
{
*which = rightDecoration;
break;
}
if (surface == window->wl.decorations.bottom.surface)
{
*which = bottomDecoration;
break;
}
window = window->next;
}
return window;
}
static void pointerHandleEnter(void* userData,
struct wl_pointer* pointer,
uint32_t serial,
struct wl_surface* surface,
wl_fixed_t sx,
wl_fixed_t sy)
{
// Happens in the case we just destroyed the surface.
if (!surface)
return;
_GLFWdecorationSideWayland focus = mainWindow;
_GLFWwindow* window = wl_surface_get_user_data(surface);
if (!window)
{
window = findWindowFromDecorationSurface(surface, &focus);
if (!window)
return;
}
window->wl.decorations.focus = focus;
_glfw.wl.serial = serial;
_glfw.wl.pointerEnterSerial = serial;
_glfw.wl.pointerFocus = window;
window->wl.hovered = GLFW_TRUE;
_glfwPlatformSetCursor(window, window->wl.currentCursor);
_glfwInputCursorEnter(window, GLFW_TRUE);
}
static void pointerHandleLeave(void* userData,
struct wl_pointer* pointer,
uint32_t serial,
struct wl_surface* surface)
{
_GLFWwindow* window = _glfw.wl.pointerFocus;
if (!window)
return;
window->wl.hovered = GLFW_FALSE;
_glfw.wl.serial = serial;
_glfw.wl.pointerFocus = NULL;
_glfwInputCursorEnter(window, GLFW_FALSE);
_glfw.wl.cursorPreviousName = NULL;
}
static void setCursor(_GLFWwindow* window, const char* name)
{
struct wl_buffer* buffer;
struct wl_cursor* cursor;
struct wl_cursor_image* image;
struct wl_surface* surface = _glfw.wl.cursorSurface;
struct wl_cursor_theme* theme = _glfw.wl.cursorTheme;
int scale = 1;
if (window->wl.scale > 1 && _glfw.wl.cursorThemeHiDPI)
{
// We only support up to scale=2 for now, since libwayland-cursor
// requires us to load a different theme for each size.
scale = 2;
theme = _glfw.wl.cursorThemeHiDPI;
}
cursor = wl_cursor_theme_get_cursor(theme, name);
if (!cursor)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Standard cursor shape unavailable");
return;
}
// TODO: handle animated cursors too.
image = cursor->images[0];
if (!image)
return;
buffer = wl_cursor_image_get_buffer(image);
if (!buffer)
return;
wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.pointerEnterSerial,
surface,
image->hotspot_x / scale,
image->hotspot_y / scale);
wl_surface_set_buffer_scale(surface, scale);
wl_surface_attach(surface, buffer, 0, 0);
wl_surface_damage(surface, 0, 0,
image->width, image->height);
wl_surface_commit(surface);
_glfw.wl.cursorPreviousName = name;
}
static void pointerHandleMotion(void* userData,
struct wl_pointer* pointer,
uint32_t time,
wl_fixed_t sx,
wl_fixed_t sy)
{
_GLFWwindow* window = _glfw.wl.pointerFocus;
const char* cursorName = NULL;
double x, y;
if (!window)
return;
if (window->cursorMode == GLFW_CURSOR_DISABLED)
return;
x = wl_fixed_to_double(sx);
y = wl_fixed_to_double(sy);
window->wl.cursorPosX = x;
window->wl.cursorPosY = y;
switch (window->wl.decorations.focus)
{
case mainWindow:
_glfwInputCursorPos(window, x, y);
_glfw.wl.cursorPreviousName = NULL;
return;
case topDecoration:
if (y < GLFW_BORDER_SIZE)
cursorName = "n-resize";
else
cursorName = "left_ptr";
break;
case leftDecoration:
if (y < GLFW_BORDER_SIZE)
cursorName = "nw-resize";
else
cursorName = "w-resize";
break;
case rightDecoration:
if (y < GLFW_BORDER_SIZE)
cursorName = "ne-resize";
else
cursorName = "e-resize";
break;
case bottomDecoration:
if (x < GLFW_BORDER_SIZE)
cursorName = "sw-resize";
else if (x > window->wl.width + GLFW_BORDER_SIZE)
cursorName = "se-resize";
else
cursorName = "s-resize";
break;
default:
assert(0);
}
if (_glfw.wl.cursorPreviousName != cursorName)
setCursor(window, cursorName);
}
static void pointerHandleButton(void* userData,
struct wl_pointer* pointer,
uint32_t serial,
uint32_t time,
uint32_t button,
uint32_t state)
{
_GLFWwindow* window = _glfw.wl.pointerFocus;
int glfwButton;
uint32_t edges = XDG_TOPLEVEL_RESIZE_EDGE_NONE;
if (!window)
return;
if (button == BTN_LEFT)
{
switch (window->wl.decorations.focus)
{
case mainWindow:
break;
case topDecoration:
if (window->wl.cursorPosY < GLFW_BORDER_SIZE)
edges = XDG_TOPLEVEL_RESIZE_EDGE_TOP;
else
{
xdg_toplevel_move(window->wl.xdg.toplevel, _glfw.wl.seat, serial);
}
break;
case leftDecoration:
if (window->wl.cursorPosY < GLFW_BORDER_SIZE)
edges = XDG_TOPLEVEL_RESIZE_EDGE_TOP_LEFT;
else
edges = XDG_TOPLEVEL_RESIZE_EDGE_LEFT;
break;
case rightDecoration:
if (window->wl.cursorPosY < GLFW_BORDER_SIZE)
edges = XDG_TOPLEVEL_RESIZE_EDGE_TOP_RIGHT;
else
edges = XDG_TOPLEVEL_RESIZE_EDGE_RIGHT;
break;
case bottomDecoration:
if (window->wl.cursorPosX < GLFW_BORDER_SIZE)
edges = XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_LEFT;
else if (window->wl.cursorPosX > window->wl.width + GLFW_BORDER_SIZE)
edges = XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_RIGHT;
else
edges = XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM;
break;
default:
assert(0);
}
if (edges != XDG_TOPLEVEL_RESIZE_EDGE_NONE)
{
xdg_toplevel_resize(window->wl.xdg.toplevel, _glfw.wl.seat,
serial, edges);
return;
}
}
else if (button == BTN_RIGHT)
{
if (window->wl.decorations.focus != mainWindow && window->wl.xdg.toplevel)
{
xdg_toplevel_show_window_menu(window->wl.xdg.toplevel,
_glfw.wl.seat, serial,
window->wl.cursorPosX,
window->wl.cursorPosY);
return;
}
}
// Don’t pass the button to the user if it was related to a decoration.
if (window->wl.decorations.focus != mainWindow)
return;
_glfw.wl.serial = serial;
/* Makes left, right and middle 0, 1 and 2. Overall order follows evdev
* codes. */
glfwButton = button - BTN_LEFT;
_glfwInputMouseClick(window,
glfwButton,
state == WL_POINTER_BUTTON_STATE_PRESSED
? GLFW_PRESS
: GLFW_RELEASE,
_glfw.wl.xkb.modifiers);
}
static void pointerHandleAxis(void* userData,
struct wl_pointer* pointer,
uint32_t time,
uint32_t axis,
wl_fixed_t value)
{
_GLFWwindow* window = _glfw.wl.pointerFocus;
double x = 0.0, y = 0.0;
// Wayland scroll events are in pointer motion coordinate space (think two
// finger scroll). The factor 10 is commonly used to convert to "scroll
// step means 1.0.
const double scrollFactor = 1.0 / 10.0;
if (!window)
return;
assert(axis == WL_POINTER_AXIS_HORIZONTAL_SCROLL ||
axis == WL_POINTER_AXIS_VERTICAL_SCROLL);
if (axis == WL_POINTER_AXIS_HORIZONTAL_SCROLL)
x = -wl_fixed_to_double(value) * scrollFactor;
else if (axis == WL_POINTER_AXIS_VERTICAL_SCROLL)
y = -wl_fixed_to_double(value) * scrollFactor;
_glfwInputScroll(window, x, y);
}
static const struct wl_pointer_listener pointerListener =
{
pointerHandleEnter,
pointerHandleLeave,
pointerHandleMotion,
pointerHandleButton,
pointerHandleAxis,
};
static void keyboardHandleKeymap(void* userData,
struct wl_keyboard* keyboard,
uint32_t format,
int fd,
uint32_t size)
{
struct xkb_keymap* keymap;
struct xkb_state* state;
struct xkb_compose_table* composeTable;
struct xkb_compose_state* composeState;
char* mapStr;
const char* locale;
if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1)
{
close(fd);
return;
}
mapStr = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
if (mapStr == MAP_FAILED) {
close(fd);
return;
}
keymap = xkb_keymap_new_from_string(_glfw.wl.xkb.context,
mapStr,
XKB_KEYMAP_FORMAT_TEXT_V1,
0);
munmap(mapStr, size);
close(fd);
if (!keymap)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to compile keymap");
return;
}
state = xkb_state_new(keymap);
if (!state)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to create XKB state");
xkb_keymap_unref(keymap);
return;
}
// Look up the preferred locale, falling back to "C" as default.
locale = getenv("LC_ALL");
if (!locale)
locale = getenv("LC_CTYPE");
if (!locale)
locale = getenv("LANG");
if (!locale)
locale = "C";
composeTable =
xkb_compose_table_new_from_locale(_glfw.wl.xkb.context, locale,
XKB_COMPOSE_COMPILE_NO_FLAGS);
if (composeTable)
{
composeState =
xkb_compose_state_new(composeTable, XKB_COMPOSE_STATE_NO_FLAGS);
xkb_compose_table_unref(composeTable);
if (composeState)
_glfw.wl.xkb.composeState = composeState;
else
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to create XKB compose state");
}
else
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to create XKB compose table");
}
xkb_keymap_unref(_glfw.wl.xkb.keymap);
xkb_state_unref(_glfw.wl.xkb.state);
_glfw.wl.xkb.keymap = keymap;
_glfw.wl.xkb.state = state;
_glfw.wl.xkb.controlIndex = xkb_keymap_mod_get_index(_glfw.wl.xkb.keymap, "Control");
_glfw.wl.xkb.altIndex = xkb_keymap_mod_get_index(_glfw.wl.xkb.keymap, "Mod1");
_glfw.wl.xkb.shiftIndex = xkb_keymap_mod_get_index(_glfw.wl.xkb.keymap, "Shift");
_glfw.wl.xkb.superIndex = xkb_keymap_mod_get_index(_glfw.wl.xkb.keymap, "Mod4");
_glfw.wl.xkb.capsLockIndex = xkb_keymap_mod_get_index(_glfw.wl.xkb.keymap, "Lock");
_glfw.wl.xkb.numLockIndex = xkb_keymap_mod_get_index(_glfw.wl.xkb.keymap, "Mod2");
}
static void keyboardHandleEnter(void* userData,
struct wl_keyboard* keyboard,
uint32_t serial,
struct wl_surface* surface,
struct wl_array* keys)
{
// Happens in the case we just destroyed the surface.
if (!surface)
return;
_GLFWwindow* window = wl_surface_get_user_data(surface);
if (!window)
{
window = findWindowFromDecorationSurface(surface, NULL);
if (!window)
return;
}
_glfw.wl.serial = serial;
_glfw.wl.keyboardFocus = window;
_glfwInputWindowFocus(window, GLFW_TRUE);
}
static void keyboardHandleLeave(void* userData,
struct wl_keyboard* keyboard,
uint32_t serial,
struct wl_surface* surface)
{
_GLFWwindow* window = _glfw.wl.keyboardFocus;
if (!window)
return;
struct itimerspec timer = {};
timerfd_settime(_glfw.wl.timerfd, 0, &timer, NULL);
_glfw.wl.serial = serial;
_glfw.wl.keyboardFocus = NULL;
_glfwInputWindowFocus(window, GLFW_FALSE);
}
static int translateKey(uint32_t scancode)
{
if (scancode < sizeof(_glfw.wl.keycodes) / sizeof(_glfw.wl.keycodes[0]))
return _glfw.wl.keycodes[scancode];
return GLFW_KEY_UNKNOWN;
}
static xkb_keysym_t composeSymbol(xkb_keysym_t sym)
{
if (sym == XKB_KEY_NoSymbol || !_glfw.wl.xkb.composeState)
return sym;
if (xkb_compose_state_feed(_glfw.wl.xkb.composeState, sym)
!= XKB_COMPOSE_FEED_ACCEPTED)
return sym;
switch (xkb_compose_state_get_status(_glfw.wl.xkb.composeState))
{
case XKB_COMPOSE_COMPOSED:
return xkb_compose_state_get_one_sym(_glfw.wl.xkb.composeState);
case XKB_COMPOSE_COMPOSING:
case XKB_COMPOSE_CANCELLED:
return XKB_KEY_NoSymbol;
case XKB_COMPOSE_NOTHING:
default:
return sym;
}
}
GLFWbool _glfwInputTextWayland(_GLFWwindow* window, uint32_t scancode)
{
const xkb_keysym_t* keysyms;
const xkb_keycode_t keycode = scancode + 8;
if (xkb_state_key_get_syms(_glfw.wl.xkb.state, keycode, &keysyms) == 1)
{
const xkb_keysym_t keysym = composeSymbol(keysyms[0]);
const uint32_t codepoint = _glfwKeySym2Unicode(keysym);
if (codepoint != GLFW_INVALID_CODEPOINT)
{
const int mods = _glfw.wl.xkb.modifiers;
const int plain = !(mods & (GLFW_MOD_CONTROL | GLFW_MOD_ALT));
_glfwInputChar(window, codepoint, mods, plain);
}
}
return xkb_keymap_key_repeats(_glfw.wl.xkb.keymap, keycode);
}
static void keyboardHandleKey(void* userData,
struct wl_keyboard* keyboard,
uint32_t serial,
uint32_t time,
uint32_t scancode,
uint32_t state)
{
_GLFWwindow* window = _glfw.wl.keyboardFocus;
if (!window)
return;
const int key = translateKey(scancode);
const int action =
state == WL_KEYBOARD_KEY_STATE_PRESSED ? GLFW_PRESS : GLFW_RELEASE;
_glfw.wl.serial = serial;
_glfwInputKey(window, key, scancode, action, _glfw.wl.xkb.modifiers);
struct itimerspec timer = {};
if (action == GLFW_PRESS)
{
const GLFWbool shouldRepeat = _glfwInputTextWayland(window, scancode);
if (shouldRepeat && _glfw.wl.keyboardRepeatRate > 0)
{
_glfw.wl.keyboardLastKey = key;
_glfw.wl.keyboardLastScancode = scancode;
if (_glfw.wl.keyboardRepeatRate > 1)
timer.it_interval.tv_nsec = 1000000000 / _glfw.wl.keyboardRepeatRate;
else
timer.it_interval.tv_sec = 1;
timer.it_value.tv_sec = _glfw.wl.keyboardRepeatDelay / 1000;
timer.it_value.tv_nsec = (_glfw.wl.keyboardRepeatDelay % 1000) * 1000000;
}
}
timerfd_settime(_glfw.wl.timerfd, 0, &timer, NULL);
}
static void keyboardHandleModifiers(void* userData,
struct wl_keyboard* keyboard,
uint32_t serial,
uint32_t modsDepressed,
uint32_t modsLatched,
uint32_t modsLocked,
uint32_t group)
{
_glfw.wl.serial = serial;
if (!_glfw.wl.xkb.keymap)
return;
xkb_state_update_mask(_glfw.wl.xkb.state,
modsDepressed,
modsLatched,
modsLocked,
0,
0,
group);
_glfw.wl.xkb.modifiers = 0;
struct
{
xkb_mod_index_t index;
unsigned int bit;
} modifiers[] =
{
{ _glfw.wl.xkb.controlIndex, GLFW_MOD_CONTROL },
{ _glfw.wl.xkb.altIndex, GLFW_MOD_ALT },
{ _glfw.wl.xkb.shiftIndex, GLFW_MOD_SHIFT },
{ _glfw.wl.xkb.superIndex, GLFW_MOD_SUPER },
{ _glfw.wl.xkb.capsLockIndex, GLFW_MOD_CAPS_LOCK },
{ _glfw.wl.xkb.numLockIndex, GLFW_MOD_NUM_LOCK }
};
for (size_t i = 0; i < sizeof(modifiers) / sizeof(modifiers[0]); i++)
{
if (xkb_state_mod_index_is_active(_glfw.wl.xkb.state,
modifiers[i].index,
XKB_STATE_MODS_EFFECTIVE) == 1)
{
_glfw.wl.xkb.modifiers |= modifiers[i].bit;
}
}
}
#ifdef WL_KEYBOARD_REPEAT_INFO_SINCE_VERSION
static void keyboardHandleRepeatInfo(void* userData,
struct wl_keyboard* keyboard,
int32_t rate,
int32_t delay)
{
if (keyboard != _glfw.wl.keyboard)
return;
_glfw.wl.keyboardRepeatRate = rate;
_glfw.wl.keyboardRepeatDelay = delay;
}
#endif
static const struct wl_keyboard_listener keyboardListener =
{
keyboardHandleKeymap,
keyboardHandleEnter,
keyboardHandleLeave,
keyboardHandleKey,
keyboardHandleModifiers,
#ifdef WL_KEYBOARD_REPEAT_INFO_SINCE_VERSION
keyboardHandleRepeatInfo,
#endif
};
static void seatHandleCapabilities(void* userData,
struct wl_seat* seat,
enum wl_seat_capability caps)
{
if ((caps & WL_SEAT_CAPABILITY_POINTER) && !_glfw.wl.pointer)
{
_glfw.wl.pointer = wl_seat_get_pointer(seat);
wl_pointer_add_listener(_glfw.wl.pointer, &pointerListener, NULL);
}
else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && _glfw.wl.pointer)
{
wl_pointer_destroy(_glfw.wl.pointer);
_glfw.wl.pointer = NULL;
}
if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !_glfw.wl.keyboard)
{
_glfw.wl.keyboard = wl_seat_get_keyboard(seat);
wl_keyboard_add_listener(_glfw.wl.keyboard, &keyboardListener, NULL);
}
else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && _glfw.wl.keyboard)
{
wl_keyboard_destroy(_glfw.wl.keyboard);
_glfw.wl.keyboard = NULL;
}
}
static void seatHandleName(void* userData,
struct wl_seat* seat,
const char* name)
{
}
static const struct wl_seat_listener seatListener =
{
seatHandleCapabilities,
seatHandleName,
};
static void dataOfferHandleOffer(void* userData,
struct wl_data_offer* offer,
const char* mimeType)
{
for (unsigned int i = 0; i < _glfw.wl.offerCount; i++)
{
if (_glfw.wl.offers[i].offer == offer)
{
if (strcmp(mimeType, "text/plain;charset=utf-8") == 0)
_glfw.wl.offers[i].text_plain_utf8 = GLFW_TRUE;
else if (strcmp(mimeType, "text/uri-list") == 0)
_glfw.wl.offers[i].text_uri_list = GLFW_TRUE;
break;
}
}
}
static const struct wl_data_offer_listener dataOfferListener =
{
dataOfferHandleOffer
};
static void dataDeviceHandleDataOffer(void* userData,
struct wl_data_device* device,
struct wl_data_offer* offer)
{
_GLFWofferWayland* offers =
realloc(_glfw.wl.offers, _glfw.wl.offerCount + 1);
if (!offers)
{
_glfwInputError(GLFW_OUT_OF_MEMORY, NULL);
return;
}
_glfw.wl.offers = offers;
_glfw.wl.offerCount++;
_glfw.wl.offers[_glfw.wl.offerCount - 1] = (_GLFWofferWayland) { offer };
wl_data_offer_add_listener(offer, &dataOfferListener, NULL);
}
static void dataDeviceHandleEnter(void* userData,
struct wl_data_device* device,
uint32_t serial,
struct wl_surface* surface,
wl_fixed_t x,
wl_fixed_t y,
struct wl_data_offer* offer)
{
if (_glfw.wl.dragOffer)
{
wl_data_offer_destroy(_glfw.wl.dragOffer);
_glfw.wl.dragOffer = NULL;
_glfw.wl.dragFocus = NULL;
}
for (unsigned int i = 0; i < _glfw.wl.offerCount; i++)
{
if (_glfw.wl.offers[i].offer == offer)
{
_GLFWwindow* window = NULL;
if (surface)
window = wl_surface_get_user_data(surface);
if (window && _glfw.wl.offers[i].text_uri_list)
{
_glfw.wl.dragOffer = offer;
_glfw.wl.dragFocus = window;
_glfw.wl.dragSerial = serial;
}
_glfw.wl.offers[i] = _glfw.wl.offers[_glfw.wl.offerCount - 1];
_glfw.wl.offerCount--;
break;
}
}
if (_glfw.wl.dragOffer)
wl_data_offer_accept(offer, serial, "text/uri-list");
else
{
wl_data_offer_accept(offer, serial, NULL);
wl_data_offer_destroy(offer);
}
}
static void dataDeviceHandleLeave(void* userData,
struct wl_data_device* device)
{
if (_glfw.wl.dragOffer)
{
wl_data_offer_destroy(_glfw.wl.dragOffer);
_glfw.wl.dragOffer = NULL;
_glfw.wl.dragFocus = NULL;
}
}
static void dataDeviceHandleMotion(void* userData,
struct wl_data_device* device,
uint32_t time,
wl_fixed_t x,
wl_fixed_t y)
{
}
static void dataDeviceHandleDrop(void* userData,
struct wl_data_device* device)
{
if (!_glfw.wl.dragOffer)
return;
char* string = readDataOfferAsString(_glfw.wl.dragOffer, "text/uri-list");
if (string)
{
int count;
char** paths = _glfwParseUriList(string, &count);
if (paths)
_glfwInputDrop(_glfw.wl.dragFocus, count, (const char**) paths);
for (int i = 0; i < count; i++)
free(paths[i]);
free(paths);
}
free(string);
}
static void dataDeviceHandleSelection(void* userData,
struct wl_data_device* device,
struct wl_data_offer* offer)
{
if (_glfw.wl.selectionOffer)
{
wl_data_offer_destroy(_glfw.wl.selectionOffer);
_glfw.wl.selectionOffer = NULL;
}
for (unsigned int i = 0; i < _glfw.wl.offerCount; i++)
{
if (_glfw.wl.offers[i].offer == offer)
{
if (_glfw.wl.offers[i].text_plain_utf8)
_glfw.wl.selectionOffer = offer;
else
wl_data_offer_destroy(offer);
_glfw.wl.offers[i] = _glfw.wl.offers[_glfw.wl.offerCount - 1];
_glfw.wl.offerCount--;
break;
}
}
}
const struct wl_data_device_listener dataDeviceListener =
{
dataDeviceHandleDataOffer,
dataDeviceHandleEnter,
dataDeviceHandleLeave,
dataDeviceHandleMotion,
dataDeviceHandleDrop,
dataDeviceHandleSelection,
};
// 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 "hand2";
case GLFW_HRESIZE_CURSOR:
return "sb_h_double_arrow";
case GLFW_VRESIZE_CURSOR:
return "sb_v_double_arrow";
}
return NULL;
}
void _glfwAddSeatListenerWayland(struct wl_seat* seat)
{
wl_seat_add_listener(seat, &seatListener, NULL);
}
void _glfwAddDataDeviceListenerWayland(struct wl_data_device* device)
{
wl_data_device_add_listener(device, &dataDeviceListener, NULL);
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
int _glfwPlatformCreateWindow(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
const _GLFWctxconfig* ctxconfig,
const _GLFWfbconfig* fbconfig)
{
if (!createNativeSurface(window, wndconfig, fbconfig))
return GLFW_FALSE;
if (ctxconfig->client != GLFW_NO_API)
{
if (ctxconfig->source == GLFW_EGL_CONTEXT_API ||
ctxconfig->source == GLFW_NATIVE_CONTEXT_API)
{
window->wl.egl.window = wl_egl_window_create(window->wl.surface,
wndconfig->width,
wndconfig->height);
if (!window->wl.egl.window)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to create EGL window");
return GLFW_FALSE;
}
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 (!_glfwRefreshContextAttribs(window, ctxconfig))
return GLFW_FALSE;
}
if (window->monitor || wndconfig->visible)
{
if (!createShellObjects(window))
return GLFW_FALSE;
}
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->wl.idleInhibitor)
zwp_idle_inhibitor_v1_destroy(window->wl.idleInhibitor);
if (window->context.destroy)
window->context.destroy(window);
destroyShellObjects(window);
if (window->wl.decorations.buffer)
wl_buffer_destroy(window->wl.decorations.buffer);
if (window->wl.egl.window)
wl_egl_window_destroy(window->wl.egl.window);
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 = _glfw_strdup(title);
if (window->wl.xdg.toplevel)
xdg_toplevel_set_title(window->wl.xdg.toplevel, 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)
{
if (window->monitor)
{
// Video mode setting is not available on Wayland
}
else
{
window->wl.width = width;
window->wl.height = height;
resizeWindow(window);
}
}
void _glfwPlatformSetWindowSizeLimits(_GLFWwindow* window,
int minwidth, int minheight,
int maxwidth, int maxheight)
{
if (window->wl.xdg.toplevel)
{
if (minwidth == GLFW_DONT_CARE || minheight == GLFW_DONT_CARE)
minwidth = minheight = 0;
else
{
if (window->wl.decorations.top.surface)
{
minwidth += GLFW_BORDER_SIZE * 2;
minheight += GLFW_CAPTION_HEIGHT + GLFW_BORDER_SIZE;
}
}
if (maxwidth == GLFW_DONT_CARE || maxheight == GLFW_DONT_CARE)
maxwidth = maxheight = 0;
else
{
if (window->wl.decorations.top.surface)
{
maxwidth += GLFW_BORDER_SIZE * 2;
maxheight += GLFW_CAPTION_HEIGHT + GLFW_BORDER_SIZE;
}
}
xdg_toplevel_set_min_size(window->wl.xdg.toplevel, minwidth, minheight);
xdg_toplevel_set_max_size(window->wl.xdg.toplevel, maxwidth, maxheight);
wl_surface_commit(window->wl.surface);
}
}
void _glfwPlatformSetWindowAspectRatio(_GLFWwindow* window,
int numer, int denom)
{
if (window->wl.maximized || window->wl.fullscreen)
return;
if (numer != GLFW_DONT_CARE && denom != GLFW_DONT_CARE)
{
const float aspectRatio = (float) window->wl.width / (float) window->wl.height;
const float targetRatio = (float) numer / (float) denom;
if (aspectRatio < targetRatio)
window->wl.height = window->wl.width / targetRatio;
else if (aspectRatio > targetRatio)
window->wl.width = window->wl.height * targetRatio;
resizeWindow(window);
}
}
void _glfwPlatformGetFramebufferSize(_GLFWwindow* window,
int* width, int* height)
{
_glfwPlatformGetWindowSize(window, width, height);
if (width)
*width *= window->wl.scale;
if (height)
*height *= window->wl.scale;
}
void _glfwPlatformGetWindowFrameSize(_GLFWwindow* window,
int* left, int* top,
int* right, int* bottom)
{
if (window->decorated && !window->monitor && window->wl.decorations.top.surface)
{
if (top)
*top = GLFW_CAPTION_HEIGHT;
if (left)
*left = GLFW_BORDER_SIZE;
if (right)
*right = GLFW_BORDER_SIZE;
if (bottom)
*bottom = GLFW_BORDER_SIZE;
}
}
void _glfwPlatformGetWindowContentScale(_GLFWwindow* window,
float* xscale, float* yscale)
{
if (xscale)
*xscale = (float) window->wl.scale;
if (yscale)
*yscale = (float) window->wl.scale;
}
void _glfwPlatformIconifyWindow(_GLFWwindow* window)
{
if (window->wl.xdg.toplevel)
xdg_toplevel_set_minimized(window->wl.xdg.toplevel);
}
void _glfwPlatformRestoreWindow(_GLFWwindow* window)
{
if (window->monitor)
{
// There is no way to unset minimized, or even to know if we are
// minimized, so there is nothing to do here.
}
else
{
// We assume we are not minimized and act only on maximization
if (window->wl.maximized)
{
if (window->wl.xdg.toplevel)
xdg_toplevel_unset_maximized(window->wl.xdg.toplevel);
else
window->wl.maximized = GLFW_FALSE;
}
}
}
void _glfwPlatformMaximizeWindow(_GLFWwindow* window)
{
if (window->wl.xdg.toplevel)
xdg_toplevel_set_maximized(window->wl.xdg.toplevel);
else
window->wl.maximized = GLFW_TRUE;
}
void _glfwPlatformShowWindow(_GLFWwindow* window)
{
if (!window->wl.xdg.toplevel)
{
// NOTE: The XDG/shell surface is created here so command-line applications
// with off-screen windows do not appear in for example the Unity dock
createShellObjects(window);
}
}
void _glfwPlatformHideWindow(_GLFWwindow* window)
{
if (window->wl.visible)
{
window->wl.visible = GLFW_FALSE;
destroyShellObjects(window);
wl_surface_attach(window->wl.surface, NULL, 0, 0);
wl_surface_commit(window->wl.surface);
}
}
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 (window->monitor == monitor)
{
if (!monitor)
_glfwPlatformSetWindowSize(window, width, height);
return;
}
if (window->monitor)
releaseMonitor(window);
_glfwInputWindowMonitor(window, monitor);
if (window->monitor)
acquireMonitor(window);
else
_glfwPlatformSetWindowSize(window, width, height);
}
int _glfwPlatformWindowFocused(_GLFWwindow* window)
{
return _glfw.wl.keyboardFocus == window;
}
int _glfwPlatformWindowIconified(_GLFWwindow* window)
{
// xdg-shell doesn’t give any way to request whether a surface is iconified
return GLFW_FALSE;
}
int _glfwPlatformWindowVisible(_GLFWwindow* window)
{
return window->wl.visible;
}
int _glfwPlatformWindowMaximized(_GLFWwindow* window)
{
return window->wl.maximized;
}
int _glfwPlatformWindowHovered(_GLFWwindow* window)
{
return window->wl.hovered;
}
int _glfwPlatformFramebufferTransparent(_GLFWwindow* window)
{
return window->wl.transparent;
}
void _glfwPlatformSetWindowResizable(_GLFWwindow* window, GLFWbool enabled)
{
// TODO
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Window attribute setting not implemented yet");
}
void _glfwPlatformSetWindowDecorated(_GLFWwindow* window, GLFWbool enabled)
{
if (window->wl.xdg.decoration)
{
uint32_t mode;
if (enabled)
mode = ZXDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE;
else
mode = ZXDG_TOPLEVEL_DECORATION_V1_MODE_CLIENT_SIDE;
zxdg_toplevel_decoration_v1_set_mode(window->wl.xdg.decoration, mode);
}
else
{
if (enabled)
createFallbackDecorations(window);
else
destroyFallbackDecorations(window);
}
}
void _glfwPlatformSetWindowFloating(_GLFWwindow* window, GLFWbool enabled)
{
// TODO
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Window attribute setting not implemented yet");
}
float _glfwPlatformGetWindowOpacity(_GLFWwindow* window)
{
return 1.f;
}
void _glfwPlatformSetWindowOpacity(_GLFWwindow* window, float opacity)
{
}
void _glfwPlatformSetRawMouseMotion(_GLFWwindow* window, GLFWbool enabled)
{
// This is handled in relativePointerHandleRelativeMotion
}
GLFWbool _glfwPlatformRawMouseMotionSupported(void)
{
return GLFW_TRUE;
}
void _glfwPlatformPollEvents(void)
{
double timeout = 0.0;
handleEvents(&timeout);
}
void _glfwPlatformWaitEvents(void)
{
handleEvents(NULL);
}
void _glfwPlatformWaitEventsTimeout(double timeout)
{
handleEvents(&timeout);
}
void _glfwPlatformPostEmptyEvent(void)
{
wl_display_sync(_glfw.wl.display);
flushDisplay();
}
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));
}
}
void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode)
{
_glfwPlatformSetCursor(window, window->wl.currentCursor);
}
const char* _glfwPlatformGetScancodeName(int scancode)
{
if (scancode < 0 || scancode > 255 ||
_glfw.wl.keycodes[scancode] == GLFW_KEY_UNKNOWN)
{
_glfwInputError(GLFW_INVALID_VALUE,
"Wayland: Invalid scancode %i",
scancode);
return NULL;
}
const int key = _glfw.wl.keycodes[scancode];
const xkb_keycode_t keycode = scancode + 8;
const xkb_layout_index_t layout =
xkb_state_key_get_layout(_glfw.wl.xkb.state, keycode);
if (layout == XKB_LAYOUT_INVALID)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to retrieve layout for key name");
return NULL;
}
const xkb_keysym_t* keysyms = NULL;
xkb_keymap_key_get_syms_by_level(_glfw.wl.xkb.keymap,
keycode,
layout,
0,
&keysyms);
if (keysyms == NULL)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to retrieve keysym for key name");
return NULL;
}
const uint32_t codepoint = _glfwKeySym2Unicode(keysyms[0]);
if (codepoint == GLFW_INVALID_CODEPOINT)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to retrieve codepoint for key name");
return NULL;
}
const size_t count = _glfwEncodeUTF8(_glfw.wl.keynames[key], codepoint);
if (count == 0)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to encode codepoint for key name");
return NULL;
}
_glfw.wl.keynames[key][count] = '\0';
return _glfw.wl.keynames[key];
}
int _glfwPlatformGetKeyScancode(int key)
{
return _glfw.wl.scancodes[key];
}
int _glfwPlatformCreateCursor(_GLFWcursor* cursor,
const GLFWimage* image,
int xhot, int yhot)
{
cursor->wl.buffer = createShmBuffer(image);
if (!cursor->wl.buffer)
return GLFW_FALSE;
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.cursor = standardCursor;
cursor->wl.currentImage = 0;
if (_glfw.wl.cursorThemeHiDPI)
{
standardCursor = wl_cursor_theme_get_cursor(_glfw.wl.cursorThemeHiDPI,
translateCursorShape(shape));
cursor->wl.cursorHiDPI = standardCursor;
}
return GLFW_TRUE;
}
void _glfwPlatformDestroyCursor(_GLFWcursor* cursor)
{
// If it's a standard cursor we don't need to do anything here
if (cursor->wl.cursor)
return;
if (cursor->wl.buffer)
wl_buffer_destroy(cursor->wl.buffer);
}
static void relativePointerHandleRelativeMotion(void* userData,
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 = userData;
double xpos = window->virtualCursorPosX;
double ypos = window->virtualCursorPosY;
if (window->cursorMode != GLFW_CURSOR_DISABLED)
return;
if (window->rawMouseMotion)
{
xpos += wl_fixed_to_double(dxUnaccel);
ypos += wl_fixed_to_double(dyUnaccel);
}
else
{
xpos += wl_fixed_to_double(dx);
ypos += wl_fixed_to_double(dy);
}
_glfwInputCursorPos(window, xpos, ypos);
}
static const struct zwp_relative_pointer_v1_listener relativePointerListener =
{
relativePointerHandleRelativeMotion
};
static void lockedPointerHandleLocked(void* userData,
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 lockedPointerHandleUnlocked(void* userData,
struct zwp_locked_pointer_v1* lockedPointer)
{
}
static const struct zwp_locked_pointer_v1_listener lockedPointerListener =
{
lockedPointerHandleLocked,
lockedPointerHandleUnlocked
};
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.pointerEnterSerial,
NULL, 0, 0);
}
static GLFWbool isPointerLocked(_GLFWwindow* window)
{
return window->wl.pointerLock.lockedPointer != NULL;
}
void _glfwPlatformSetCursor(_GLFWwindow* window, _GLFWcursor* cursor)
{
struct wl_cursor* defaultCursor;
struct wl_cursor* defaultCursorHiDPI = NULL;
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 || window->wl.decorations.focus != mainWindow)
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)
setCursorImage(window, &cursor->wl);
else
{
defaultCursor = wl_cursor_theme_get_cursor(_glfw.wl.cursorTheme,
"left_ptr");
if (!defaultCursor)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Standard cursor not found");
return;
}
if (_glfw.wl.cursorThemeHiDPI)
defaultCursorHiDPI =
wl_cursor_theme_get_cursor(_glfw.wl.cursorThemeHiDPI,
"left_ptr");
_GLFWcursorWayland cursorWayland = {
defaultCursor,
defaultCursorHiDPI,
NULL,
0, 0,
0, 0,
0
};
setCursorImage(window, &cursorWayland);
}
}
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.pointerEnterSerial, NULL, 0, 0);
}
}
static void dataSourceHandleTarget(void* userData,
struct wl_data_source* source,
const char* mimeType)
{
if (_glfw.wl.selectionSource != source)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Unknown clipboard data source");
return;
}
}
static void dataSourceHandleSend(void* userData,
struct wl_data_source* source,
const char* mimeType,
int fd)
{
// Ignore it if this is an outdated or invalid request
if (_glfw.wl.selectionSource != source ||
strcmp(mimeType, "text/plain;charset=utf-8") != 0)
{
close(fd);
return;
}
char* string = _glfw.wl.clipboardString;
size_t length = strlen(string);
while (length > 0)
{
const ssize_t result = write(fd, string, length);
if (result == -1)
{
if (errno == EINTR)
continue;
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Error while writing the clipboard: %s",
strerror(errno));
break;
}
length -= result;
string += result;
}
close(fd);
}
static void dataSourceHandleCancelled(void* userData,
struct wl_data_source* source)
{
wl_data_source_destroy(source);
if (_glfw.wl.selectionSource != source)
return;
_glfw.wl.selectionSource = NULL;
}
static const struct wl_data_source_listener dataSourceListener =
{
dataSourceHandleTarget,
dataSourceHandleSend,
dataSourceHandleCancelled,
};
void _glfwPlatformSetClipboardString(const char* string)
{
if (_glfw.wl.selectionSource)
{
wl_data_source_destroy(_glfw.wl.selectionSource);
_glfw.wl.selectionSource = NULL;
}
char* copy = _glfw_strdup(string);
if (!copy)
{
_glfwInputError(GLFW_OUT_OF_MEMORY, NULL);
return;
}
free(_glfw.wl.clipboardString);
_glfw.wl.clipboardString = copy;
_glfw.wl.selectionSource =
wl_data_device_manager_create_data_source(_glfw.wl.dataDeviceManager);
if (!_glfw.wl.selectionSource)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to create clipboard data source");
return;
}
wl_data_source_add_listener(_glfw.wl.selectionSource,
&dataSourceListener,
NULL);
wl_data_source_offer(_glfw.wl.selectionSource, "text/plain;charset=utf-8");
wl_data_device_set_selection(_glfw.wl.dataDevice,
_glfw.wl.selectionSource,
_glfw.wl.serial);
}
const char* _glfwPlatformGetClipboardString(void)
{
if (!_glfw.wl.selectionOffer)
{
_glfwInputError(GLFW_FORMAT_UNAVAILABLE,
"Wayland: No clipboard data available");
return NULL;
}
if (_glfw.wl.selectionSource)
return _glfw.wl.clipboardString;
free(_glfw.wl.clipboardString);
_glfw.wl.clipboardString =
readDataOfferAsString(_glfw.wl.selectionOffer, "text/plain;charset=utf-8");
return _glfw.wl.clipboardString;
}
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;
}