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ebiten/internal/glfw/x11_window_linbsd.c
Hajime Hoshi cede5027d3 internal/glfw: merge internal/cglfw into internal/glfw 
Closes #2703
2023-10-07 23:59:55 +09:00

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// SPDX-License-Identifier: Apache-2.0
// SPDX-FileCopyrightText: 2002-2006 Marcus Geelnard
// SPDX-FileCopyrightText: 2006-2019 Camilla Löwy <elmindreda@glfw.org>
// SPDX-FileCopyrightText: 2023 The Ebitengine Authors
//go:build freebsd || linux || netbsd || openbsd
#if !defined(_GNU_SOURCE)
#define _GNU_SOURCE
#endif
#include "internal_unix.h"
#include <X11/cursorfont.h>
#include <X11/Xmd.h>
#include <poll.h>
#include <signal.h>
#include <time.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <errno.h>
#include <assert.h>
// Action for EWMH client messages
#define _NET_WM_STATE_REMOVE 0
#define _NET_WM_STATE_ADD 1
#define _NET_WM_STATE_TOGGLE 2
// Additional mouse button names for XButtonEvent
#define Button6 6
#define Button7 7
// Motif WM hints flags
#define MWM_HINTS_FUNCTIONS 1
#define MWM_FUNC_RESIZE 2
#define MWM_FUNC_MOVE 4
#define MWM_FUNC_MINIMIZE 8
#define MWM_FUNC_MAXIMIZE 16
#define MWM_FUNC_CLOSE 32
#define MWM_HINTS_DECORATIONS 2
#define MWM_DECOR_BORDER 2
#define MWM_DECOR_RESIZEH 4
#define MWM_DECOR_TITLE 8
#define MWM_DECOR_MENU 16
#define MWM_DECOR_MINIMIZE 32
#define MWM_DECOR_MAXIMIZE 64
#define _GLFW_XDND_VERSION 5
// 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;
}
}
}
// Wait for event data to arrive on the X11 display socket
// This avoids blocking other threads via the per-display Xlib lock that also
// covers GLX functions
//
static GLFWbool waitForX11Event(double* timeout)
{
struct pollfd fd = { ConnectionNumber(_glfw.x11.display), POLLIN };
while (!XPending(_glfw.x11.display))
{
if (!waitForData(&fd, 1, timeout))
return GLFW_FALSE;
}
return GLFW_TRUE;
}
// Wait for event data to arrive on any event file descriptor
// This avoids blocking other threads via the per-display Xlib lock that also
// covers GLX functions
//
static GLFWbool waitForAnyEvent(double* timeout)
{
nfds_t count = 2;
struct pollfd fds[3] =
{
{ ConnectionNumber(_glfw.x11.display), POLLIN },
{ _glfw.x11.emptyEventPipe[0], POLLIN }
};
while (!XPending(_glfw.x11.display))
{
if (!waitForData(fds, count, timeout))
return GLFW_FALSE;
for (int i = 1; i < count; i++)
{
if (fds[i].revents & POLLIN)
return GLFW_TRUE;
}
}
return GLFW_TRUE;
}
// Writes a byte to the empty event pipe
//
static void writeEmptyEvent(void)
{
for (;;)
{
const char byte = 0;
const ssize_t result = write(_glfw.x11.emptyEventPipe[1], &byte, 1);
if (result == 1 || (result == -1 && errno != EINTR))
break;
}
}
// Drains available data from the empty event pipe
//
static void drainEmptyEvents(void)
{
for (;;)
{
char dummy[64];
const ssize_t result = read(_glfw.x11.emptyEventPipe[0], dummy, sizeof(dummy));
if (result == -1 && errno != EINTR)
break;
}
}
// Waits until a VisibilityNotify event arrives for the specified window or the
// timeout period elapses (ICCCM section 4.2.2)
//
static GLFWbool waitForVisibilityNotify(_GLFWwindow* window)
{
XEvent dummy;
double timeout = 0.1;
while (!XCheckTypedWindowEvent(_glfw.x11.display,
window->x11.handle,
VisibilityNotify,
&dummy))
{
if (!waitForX11Event(&timeout))
return GLFW_FALSE;
}
return GLFW_TRUE;
}
// Returns whether the window is iconified
//
static int getWindowState(_GLFWwindow* window)
{
int result = WithdrawnState;
struct {
CARD32 state;
Window icon;
} *state = NULL;
if (_glfwGetWindowPropertyX11(window->x11.handle,
_glfw.x11.WM_STATE,
_glfw.x11.WM_STATE,
(unsigned char**) &state) >= 2)
{
result = state->state;
}
if (state)
XFree(state);
return result;
}
// Returns whether the event is a selection event
//
static Bool isSelectionEvent(Display* display, XEvent* event, XPointer pointer)
{
if (event->xany.window != _glfw.x11.helperWindowHandle)
return False;
return event->type == SelectionRequest ||
event->type == SelectionNotify ||
event->type == SelectionClear;
}
// Returns whether it is a _NET_FRAME_EXTENTS event for the specified window
//
static Bool isFrameExtentsEvent(Display* display, XEvent* event, XPointer pointer)
{
_GLFWwindow* window = (_GLFWwindow*) pointer;
return event->type == PropertyNotify &&
event->xproperty.state == PropertyNewValue &&
event->xproperty.window == window->x11.handle &&
event->xproperty.atom == _glfw.x11.NET_FRAME_EXTENTS;
}
// Returns whether it is a property event for the specified selection transfer
//
static Bool isSelPropNewValueNotify(Display* display, XEvent* event, XPointer pointer)
{
XEvent* notification = (XEvent*) pointer;
return event->type == PropertyNotify &&
event->xproperty.state == PropertyNewValue &&
event->xproperty.window == notification->xselection.requestor &&
event->xproperty.atom == notification->xselection.property;
}
// Translates an X event modifier state mask
//
static int translateState(int state)
{
int mods = 0;
if (state & ShiftMask)
mods |= GLFW_MOD_SHIFT;
if (state & ControlMask)
mods |= GLFW_MOD_CONTROL;
if (state & Mod1Mask)
mods |= GLFW_MOD_ALT;
if (state & Mod4Mask)
mods |= GLFW_MOD_SUPER;
if (state & LockMask)
mods |= GLFW_MOD_CAPS_LOCK;
if (state & Mod2Mask)
mods |= GLFW_MOD_NUM_LOCK;
return mods;
}
// Translates an X11 key code to a GLFW key token
//
static int translateKey(int scancode)
{
// Use the pre-filled LUT (see createKeyTables() in x11_init.c)
if (scancode < 0 || scancode > 255)
return GLFW_KEY_UNKNOWN;
return _glfw.x11.keycodes[scancode];
}
// Sends an EWMH or ICCCM event to the window manager
//
static void sendEventToWM(_GLFWwindow* window, Atom type,
long a, long b, long c, long d, long e)
{
XEvent event = { ClientMessage };
event.xclient.window = window->x11.handle;
event.xclient.format = 32; // Data is 32-bit longs
event.xclient.message_type = type;
event.xclient.data.l[0] = a;
event.xclient.data.l[1] = b;
event.xclient.data.l[2] = c;
event.xclient.data.l[3] = d;
event.xclient.data.l[4] = e;
XSendEvent(_glfw.x11.display, _glfw.x11.root,
False,
SubstructureNotifyMask | SubstructureRedirectMask,
&event);
}
static void updateWindowHints(_GLFWwindow* window)
{
Bool maximizable = False;
if (!window->monitor && window->resizable && window->maxwidth == GLFW_DONT_CARE && window->maxheight == GLFW_DONT_CARE)
{
maximizable = True;
}
struct
{
unsigned long flags;
unsigned long functions;
unsigned long decorations;
long input_mode;
unsigned long status;
} hints = {0};
hints.flags = MWM_HINTS_FUNCTIONS | MWM_HINTS_DECORATIONS;
hints.functions = MWM_FUNC_MOVE | MWM_FUNC_MINIMIZE | MWM_FUNC_CLOSE;
if (window->resizable && window->decorated)
{
hints.functions |= MWM_FUNC_RESIZE;
}
if (maximizable)
{
hints.functions |= MWM_FUNC_MAXIMIZE;
}
if (window->decorated)
{
hints.decorations |= MWM_DECOR_BORDER | MWM_DECOR_TITLE | MWM_DECOR_MENU | MWM_DECOR_MINIMIZE;
if (window->resizable)
{
hints.decorations |= MWM_DECOR_RESIZEH;
}
if (maximizable)
{
hints.decorations |= MWM_DECOR_MAXIMIZE;
}
}
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.MOTIF_WM_HINTS,
_glfw.x11.MOTIF_WM_HINTS, 32,
PropModeReplace,
(unsigned char*) &hints,
sizeof(hints) / sizeof(long));
}
// Updates the normal hints according to the window settings
//
static void updateNormalHints(_GLFWwindow* window, int width, int height)
{
XSizeHints* hints = XAllocSizeHints();
if (!window->monitor)
{
if (window->resizable)
{
if (window->minwidth != GLFW_DONT_CARE &&
window->minheight != GLFW_DONT_CARE)
{
hints->flags |= PMinSize;
hints->min_width = window->minwidth;
hints->min_height = window->minheight;
}
if (window->maxwidth != GLFW_DONT_CARE &&
window->maxheight != GLFW_DONT_CARE)
{
hints->flags |= PMaxSize;
hints->max_width = window->maxwidth;
hints->max_height = window->maxheight;
}
if (window->numer != GLFW_DONT_CARE &&
window->denom != GLFW_DONT_CARE)
{
hints->flags |= PAspect;
hints->min_aspect.x = hints->max_aspect.x = window->numer;
hints->min_aspect.y = hints->max_aspect.y = window->denom;
}
}
else
{
hints->flags |= (PMinSize | PMaxSize);
hints->min_width = hints->max_width = width;
hints->min_height = hints->max_height = height;
}
}
hints->flags |= PWinGravity;
hints->win_gravity = StaticGravity;
XSetWMNormalHints(_glfw.x11.display, window->x11.handle, hints);
XFree(hints);
updateWindowHints(window);
}
// Updates the full screen status of the window
//
static void updateWindowMode(_GLFWwindow* window)
{
if (window->monitor)
{
if (_glfw.x11.xinerama.available &&
_glfw.x11.NET_WM_FULLSCREEN_MONITORS)
{
sendEventToWM(window,
_glfw.x11.NET_WM_FULLSCREEN_MONITORS,
window->monitor->x11.index,
window->monitor->x11.index,
window->monitor->x11.index,
window->monitor->x11.index,
0);
}
if (_glfw.x11.NET_WM_STATE && _glfw.x11.NET_WM_STATE_FULLSCREEN)
{
sendEventToWM(window,
_glfw.x11.NET_WM_STATE,
_NET_WM_STATE_ADD,
_glfw.x11.NET_WM_STATE_FULLSCREEN,
0, 1, 0);
}
else
{
// This is the butcher's way of removing window decorations
// Setting the override-redirect attribute on a window makes the
// window manager ignore the window completely (ICCCM, section 4)
// The good thing is that this makes undecorated full screen windows
// easy to do; the bad thing is that we have to do everything
// manually and some things (like iconify/restore) won't work at
// all, as those are tasks usually performed by the window manager
XSetWindowAttributes attributes;
attributes.override_redirect = True;
XChangeWindowAttributes(_glfw.x11.display,
window->x11.handle,
CWOverrideRedirect,
&attributes);
window->x11.overrideRedirect = GLFW_TRUE;
}
// Enable compositor bypass
if (!window->x11.transparent)
{
const unsigned long value = 1;
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_BYPASS_COMPOSITOR, XA_CARDINAL, 32,
PropModeReplace, (unsigned char*) &value, 1);
}
}
else
{
if (_glfw.x11.xinerama.available &&
_glfw.x11.NET_WM_FULLSCREEN_MONITORS)
{
XDeleteProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_FULLSCREEN_MONITORS);
}
if (_glfw.x11.NET_WM_STATE && _glfw.x11.NET_WM_STATE_FULLSCREEN)
{
sendEventToWM(window,
_glfw.x11.NET_WM_STATE,
_NET_WM_STATE_REMOVE,
_glfw.x11.NET_WM_STATE_FULLSCREEN,
0, 1, 0);
}
else
{
XSetWindowAttributes attributes;
attributes.override_redirect = False;
XChangeWindowAttributes(_glfw.x11.display,
window->x11.handle,
CWOverrideRedirect,
&attributes);
window->x11.overrideRedirect = GLFW_FALSE;
}
// Disable compositor bypass
if (!window->x11.transparent)
{
XDeleteProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_BYPASS_COMPOSITOR);
}
}
}
// Decode a Unicode code point from a UTF-8 stream
// Based on cutef8 by Jeff Bezanson (Public Domain)
//
#if defined(X_HAVE_UTF8_STRING)
static uint32_t decodeUTF8(const char** s)
{
uint32_t codepoint = 0, count = 0;
static const uint32_t offsets[] =
{
0x00000000u, 0x00003080u, 0x000e2080u,
0x03c82080u, 0xfa082080u, 0x82082080u
};
do
{
codepoint = (codepoint << 6) + (unsigned char) **s;
(*s)++;
count++;
} while ((**s & 0xc0) == 0x80);
assert(count <= 6);
return codepoint - offsets[count - 1];
}
#endif /*X_HAVE_UTF8_STRING*/
// Convert the specified Latin-1 string to UTF-8
//
static char* convertLatin1toUTF8(const char* source)
{
size_t size = 1;
const char* sp;
for (sp = source; *sp; sp++)
size += (*sp & 0x80) ? 2 : 1;
char* target = calloc(size, 1);
char* tp = target;
for (sp = source; *sp; sp++)
tp += _glfwEncodeUTF8(tp, *sp);
return target;
}
// Updates the cursor image according to its cursor mode
//
static void updateCursorImage(_GLFWwindow* window)
{
if (window->cursorMode == GLFW_CURSOR_NORMAL)
{
if (window->cursor)
{
XDefineCursor(_glfw.x11.display, window->x11.handle,
window->cursor->x11.handle);
}
else
XUndefineCursor(_glfw.x11.display, window->x11.handle);
}
else
{
XDefineCursor(_glfw.x11.display, window->x11.handle,
_glfw.x11.hiddenCursorHandle);
}
}
// Enable XI2 raw mouse motion events
//
static void enableRawMouseMotion(_GLFWwindow* window)
{
XIEventMask em;
unsigned char mask[XIMaskLen(XI_RawMotion)] = { 0 };
em.deviceid = XIAllMasterDevices;
em.mask_len = sizeof(mask);
em.mask = mask;
XISetMask(mask, XI_RawMotion);
XISelectEvents(_glfw.x11.display, _glfw.x11.root, &em, 1);
}
// Disable XI2 raw mouse motion events
//
static void disableRawMouseMotion(_GLFWwindow* window)
{
XIEventMask em;
unsigned char mask[] = { 0 };
em.deviceid = XIAllMasterDevices;
em.mask_len = sizeof(mask);
em.mask = mask;
XISelectEvents(_glfw.x11.display, _glfw.x11.root, &em, 1);
}
// Apply disabled cursor mode to a focused window
//
static void disableCursor(_GLFWwindow* window)
{
if (window->rawMouseMotion)
enableRawMouseMotion(window);
_glfw.x11.disabledCursorWindow = window;
_glfwPlatformGetCursorPos(window,
&_glfw.x11.restoreCursorPosX,
&_glfw.x11.restoreCursorPosY);
updateCursorImage(window);
_glfwCenterCursorInContentArea(window);
XGrabPointer(_glfw.x11.display, window->x11.handle, True,
ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
GrabModeAsync, GrabModeAsync,
window->x11.handle,
_glfw.x11.hiddenCursorHandle,
CurrentTime);
}
// Exit disabled cursor mode for the specified window
//
static void enableCursor(_GLFWwindow* window)
{
if (window->rawMouseMotion)
disableRawMouseMotion(window);
_glfw.x11.disabledCursorWindow = NULL;
XUngrabPointer(_glfw.x11.display, CurrentTime);
_glfwPlatformSetCursorPos(window,
_glfw.x11.restoreCursorPosX,
_glfw.x11.restoreCursorPosY);
updateCursorImage(window);
}
// Create the X11 window (and its colormap)
//
static GLFWbool createNativeWindow(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
Visual* visual, int depth)
{
int width = wndconfig->width;
int height = wndconfig->height;
if (wndconfig->scaleToMonitor)
{
width *= _glfw.x11.contentScaleX;
height *= _glfw.x11.contentScaleY;
}
// Create a colormap based on the visual used by the current context
window->x11.colormap = XCreateColormap(_glfw.x11.display,
_glfw.x11.root,
visual,
AllocNone);
window->x11.transparent = _glfwIsVisualTransparentX11(visual);
XSetWindowAttributes wa = { 0 };
wa.colormap = window->x11.colormap;
wa.event_mask = StructureNotifyMask | KeyPressMask | KeyReleaseMask |
PointerMotionMask | ButtonPressMask | ButtonReleaseMask |
ExposureMask | FocusChangeMask | VisibilityChangeMask |
EnterWindowMask | LeaveWindowMask | PropertyChangeMask;
_glfwGrabErrorHandlerX11();
window->x11.parent = _glfw.x11.root;
window->x11.handle = XCreateWindow(_glfw.x11.display,
_glfw.x11.root,
0, 0, // Position
width, height,
0, // Border width
depth, // Color depth
InputOutput,
visual,
CWBorderPixel | CWColormap | CWEventMask,
&wa);
_glfwReleaseErrorHandlerX11();
if (!window->x11.handle)
{
_glfwInputErrorX11(GLFW_PLATFORM_ERROR,
"X11: Failed to create window");
return GLFW_FALSE;
}
XSaveContext(_glfw.x11.display,
window->x11.handle,
_glfw.x11.context,
(XPointer) window);
if (!wndconfig->decorated)
_glfwPlatformSetWindowDecorated(window, GLFW_FALSE);
if (_glfw.x11.NET_WM_STATE && !window->monitor)
{
Atom states[3];
int count = 0;
if (wndconfig->floating)
{
if (_glfw.x11.NET_WM_STATE_ABOVE)
states[count++] = _glfw.x11.NET_WM_STATE_ABOVE;
}
if (wndconfig->maximized)
{
if (_glfw.x11.NET_WM_STATE_MAXIMIZED_VERT &&
_glfw.x11.NET_WM_STATE_MAXIMIZED_HORZ)
{
states[count++] = _glfw.x11.NET_WM_STATE_MAXIMIZED_VERT;
states[count++] = _glfw.x11.NET_WM_STATE_MAXIMIZED_HORZ;
window->x11.maximized = GLFW_TRUE;
}
}
if (count)
{
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_STATE, XA_ATOM, 32,
PropModeReplace, (unsigned char*) states, count);
}
}
// Declare the WM protocols supported by GLFW
{
Atom protocols[] =
{
_glfw.x11.WM_DELETE_WINDOW,
_glfw.x11.NET_WM_PING
};
XSetWMProtocols(_glfw.x11.display, window->x11.handle,
protocols, sizeof(protocols) / sizeof(Atom));
}
// Declare our PID
{
const long pid = getpid();
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_PID, XA_CARDINAL, 32,
PropModeReplace,
(unsigned char*) &pid, 1);
}
if (_glfw.x11.NET_WM_WINDOW_TYPE && _glfw.x11.NET_WM_WINDOW_TYPE_NORMAL)
{
Atom type = _glfw.x11.NET_WM_WINDOW_TYPE_NORMAL;
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_WINDOW_TYPE, XA_ATOM, 32,
PropModeReplace, (unsigned char*) &type, 1);
}
// Set ICCCM WM_HINTS property
{
XWMHints* hints = XAllocWMHints();
if (!hints)
{
_glfwInputError(GLFW_OUT_OF_MEMORY,
"X11: Failed to allocate WM hints");
return GLFW_FALSE;
}
hints->flags = StateHint;
hints->initial_state = NormalState;
XSetWMHints(_glfw.x11.display, window->x11.handle, hints);
XFree(hints);
}
updateNormalHints(window, width, height);
// Set ICCCM WM_CLASS property
{
XClassHint* hint = XAllocClassHint();
if (strlen(wndconfig->x11.instanceName) &&
strlen(wndconfig->x11.className))
{
hint->res_name = (char*) wndconfig->x11.instanceName;
hint->res_class = (char*) wndconfig->x11.className;
}
else
{
const char* resourceName = getenv("RESOURCE_NAME");
if (resourceName && strlen(resourceName))
hint->res_name = (char*) resourceName;
else if (strlen(wndconfig->title))
hint->res_name = (char*) wndconfig->title;
else
hint->res_name = (char*) "glfw-application";
if (strlen(wndconfig->title))
hint->res_class = (char*) wndconfig->title;
else
hint->res_class = (char*) "GLFW-Application";
}
XSetClassHint(_glfw.x11.display, window->x11.handle, hint);
XFree(hint);
}
// Announce support for Xdnd (drag and drop)
{
const Atom version = _GLFW_XDND_VERSION;
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.XdndAware, XA_ATOM, 32,
PropModeReplace, (unsigned char*) &version, 1);
}
_glfwPlatformSetWindowTitle(window, wndconfig->title);
if (_glfw.x11.im)
{
window->x11.ic = XCreateIC(_glfw.x11.im,
XNInputStyle,
XIMPreeditNothing | XIMStatusNothing,
XNClientWindow,
window->x11.handle,
XNFocusWindow,
window->x11.handle,
NULL);
}
if (window->x11.ic)
{
unsigned long filter = 0;
if (XGetICValues(window->x11.ic, XNFilterEvents, &filter, NULL) == NULL)
XSelectInput(_glfw.x11.display, window->x11.handle, wa.event_mask | filter);
}
_glfwPlatformGetWindowPos(window, &window->x11.xpos, &window->x11.ypos);
_glfwPlatformGetWindowSize(window, &window->x11.width, &window->x11.height);
return GLFW_TRUE;
}
// Set the specified property to the selection converted to the requested target
//
static Atom writeTargetToProperty(const XSelectionRequestEvent* request)
{
int i;
char* selectionString = NULL;
const Atom formats[] = { _glfw.x11.UTF8_STRING, XA_STRING };
const int formatCount = sizeof(formats) / sizeof(formats[0]);
if (request->selection == _glfw.x11.PRIMARY)
selectionString = _glfw.x11.primarySelectionString;
else
selectionString = _glfw.x11.clipboardString;
if (request->property == None)
{
// The requester is a legacy client (ICCCM section 2.2)
// We don't support legacy clients, so fail here
return None;
}
if (request->target == _glfw.x11.TARGETS)
{
// The list of supported targets was requested
const Atom targets[] = { _glfw.x11.TARGETS,
_glfw.x11.MULTIPLE,
_glfw.x11.UTF8_STRING,
XA_STRING };
XChangeProperty(_glfw.x11.display,
request->requestor,
request->property,
XA_ATOM,
32,
PropModeReplace,
(unsigned char*) targets,
sizeof(targets) / sizeof(targets[0]));
return request->property;
}
if (request->target == _glfw.x11.MULTIPLE)
{
// Multiple conversions were requested
Atom* targets;
unsigned long i, count;
count = _glfwGetWindowPropertyX11(request->requestor,
request->property,
_glfw.x11.ATOM_PAIR,
(unsigned char**) &targets);
for (i = 0; i < count; i += 2)
{
int j;
for (j = 0; j < formatCount; j++)
{
if (targets[i] == formats[j])
break;
}
if (j < formatCount)
{
XChangeProperty(_glfw.x11.display,
request->requestor,
targets[i + 1],
targets[i],
8,
PropModeReplace,
(unsigned char *) selectionString,
strlen(selectionString));
}
else
targets[i + 1] = None;
}
XChangeProperty(_glfw.x11.display,
request->requestor,
request->property,
_glfw.x11.ATOM_PAIR,
32,
PropModeReplace,
(unsigned char*) targets,
count);
XFree(targets);
return request->property;
}
if (request->target == _glfw.x11.SAVE_TARGETS)
{
// The request is a check whether we support SAVE_TARGETS
// It should be handled as a no-op side effect target
XChangeProperty(_glfw.x11.display,
request->requestor,
request->property,
_glfw.x11.NULL_,
32,
PropModeReplace,
NULL,
0);
return request->property;
}
// Conversion to a data target was requested
for (i = 0; i < formatCount; i++)
{
if (request->target == formats[i])
{
// The requested target is one we support
XChangeProperty(_glfw.x11.display,
request->requestor,
request->property,
request->target,
8,
PropModeReplace,
(unsigned char *) selectionString,
strlen(selectionString));
return request->property;
}
}
// The requested target is not supported
return None;
}
static void handleSelectionRequest(XEvent* event)
{
const XSelectionRequestEvent* request = &event->xselectionrequest;
XEvent reply = { SelectionNotify };
reply.xselection.property = writeTargetToProperty(request);
reply.xselection.display = request->display;
reply.xselection.requestor = request->requestor;
reply.xselection.selection = request->selection;
reply.xselection.target = request->target;
reply.xselection.time = request->time;
XSendEvent(_glfw.x11.display, request->requestor, False, 0, &reply);
}
static const char* getSelectionString(Atom selection)
{
char** selectionString = NULL;
const Atom targets[] = { _glfw.x11.UTF8_STRING, XA_STRING };
const size_t targetCount = sizeof(targets) / sizeof(targets[0]);
if (selection == _glfw.x11.PRIMARY)
selectionString = &_glfw.x11.primarySelectionString;
else
selectionString = &_glfw.x11.clipboardString;
if (XGetSelectionOwner(_glfw.x11.display, selection) ==
_glfw.x11.helperWindowHandle)
{
// Instead of doing a large number of X round-trips just to put this
// string into a window property and then read it back, just return it
return *selectionString;
}
free(*selectionString);
*selectionString = NULL;
for (size_t i = 0; i < targetCount; i++)
{
char* data;
Atom actualType;
int actualFormat;
unsigned long itemCount, bytesAfter;
XEvent notification, dummy;
XConvertSelection(_glfw.x11.display,
selection,
targets[i],
_glfw.x11.GLFW_SELECTION,
_glfw.x11.helperWindowHandle,
CurrentTime);
while (!XCheckTypedWindowEvent(_glfw.x11.display,
_glfw.x11.helperWindowHandle,
SelectionNotify,
&notification))
{
waitForX11Event(NULL);
}
if (notification.xselection.property == None)
continue;
XCheckIfEvent(_glfw.x11.display,
&dummy,
isSelPropNewValueNotify,
(XPointer) &notification);
XGetWindowProperty(_glfw.x11.display,
notification.xselection.requestor,
notification.xselection.property,
0,
LONG_MAX,
True,
AnyPropertyType,
&actualType,
&actualFormat,
&itemCount,
&bytesAfter,
(unsigned char**) &data);
if (actualType == _glfw.x11.INCR)
{
size_t size = 1;
char* string = NULL;
for (;;)
{
while (!XCheckIfEvent(_glfw.x11.display,
&dummy,
isSelPropNewValueNotify,
(XPointer) &notification))
{
waitForX11Event(NULL);
}
XFree(data);
XGetWindowProperty(_glfw.x11.display,
notification.xselection.requestor,
notification.xselection.property,
0,
LONG_MAX,
True,
AnyPropertyType,
&actualType,
&actualFormat,
&itemCount,
&bytesAfter,
(unsigned char**) &data);
if (itemCount)
{
size += itemCount;
string = realloc(string, size);
string[size - itemCount - 1] = '\0';
strcat(string, data);
}
if (!itemCount)
{
if (string)
{
if (targets[i] == XA_STRING)
{
*selectionString = convertLatin1toUTF8(string);
free(string);
}
else
*selectionString = string;
}
break;
}
}
}
else if (actualType == targets[i])
{
if (targets[i] == XA_STRING)
*selectionString = convertLatin1toUTF8(data);
else
*selectionString = _glfw_strdup(data);
}
XFree(data);
if (*selectionString)
break;
}
if (!*selectionString)
{
_glfwInputError(GLFW_FORMAT_UNAVAILABLE,
"X11: Failed to convert selection to string");
}
return *selectionString;
}
// Make the specified window and its video mode active on its monitor
//
static void acquireMonitor(_GLFWwindow* window)
{
if (_glfw.x11.saver.count == 0)
{
// Remember old screen saver settings
XGetScreenSaver(_glfw.x11.display,
&_glfw.x11.saver.timeout,
&_glfw.x11.saver.interval,
&_glfw.x11.saver.blanking,
&_glfw.x11.saver.exposure);
// Disable screen saver
XSetScreenSaver(_glfw.x11.display, 0, 0, DontPreferBlanking,
DefaultExposures);
}
if (!window->monitor->window)
_glfw.x11.saver.count++;
_glfwSetVideoModeX11(window->monitor, &window->videoMode);
if (window->x11.overrideRedirect)
{
int xpos, ypos;
GLFWvidmode mode;
// Manually position the window over its monitor
_glfwPlatformGetMonitorPos(window->monitor, &xpos, &ypos);
_glfwPlatformGetVideoMode(window->monitor, &mode);
XMoveResizeWindow(_glfw.x11.display, window->x11.handle,
xpos, ypos, mode.width, mode.height);
}
_glfwInputMonitorWindow(window->monitor, window);
}
// Remove the window and restore the original video mode
//
static void releaseMonitor(_GLFWwindow* window)
{
if (window->monitor->window != window)
return;
_glfwInputMonitorWindow(window->monitor, NULL);
_glfwRestoreVideoModeX11(window->monitor);
_glfw.x11.saver.count--;
if (_glfw.x11.saver.count == 0)
{
// Restore old screen saver settings
XSetScreenSaver(_glfw.x11.display,
_glfw.x11.saver.timeout,
_glfw.x11.saver.interval,
_glfw.x11.saver.blanking,
_glfw.x11.saver.exposure);
}
}
// Process the specified X event
//
static void processEvent(XEvent *event)
{
int keycode = 0;
Bool filtered = False;
// HACK: Save scancode as some IMs clear the field in XFilterEvent
if (event->type == KeyPress || event->type == KeyRelease)
keycode = event->xkey.keycode;
if (_glfw.x11.im)
filtered = XFilterEvent(event, None);
if (_glfw.x11.randr.available)
{
if (event->type == _glfw.x11.randr.eventBase + RRNotify)
{
XRRUpdateConfiguration(event);
_glfwPollMonitorsX11();
return;
}
}
if (_glfw.x11.xkb.available)
{
if (event->type == _glfw.x11.xkb.eventBase + XkbEventCode)
{
if (((XkbEvent*) event)->any.xkb_type == XkbStateNotify &&
(((XkbEvent*) event)->state.changed & XkbGroupStateMask))
{
_glfw.x11.xkb.group = ((XkbEvent*) event)->state.group;
}
return;
}
}
if (event->type == GenericEvent)
{
if (_glfw.x11.xi.available)
{
_GLFWwindow* window = _glfw.x11.disabledCursorWindow;
if (window &&
window->rawMouseMotion &&
event->xcookie.extension == _glfw.x11.xi.majorOpcode &&
XGetEventData(_glfw.x11.display, &event->xcookie) &&
event->xcookie.evtype == XI_RawMotion)
{
XIRawEvent* re = event->xcookie.data;
if (re->valuators.mask_len)
{
const double* values = re->raw_values;
double xpos = window->virtualCursorPosX;
double ypos = window->virtualCursorPosY;
if (XIMaskIsSet(re->valuators.mask, 0))
{
xpos += *values;
values++;
}
if (XIMaskIsSet(re->valuators.mask, 1))
ypos += *values;
_glfwInputCursorPos(window, xpos, ypos);
}
}
XFreeEventData(_glfw.x11.display, &event->xcookie);
}
return;
}
if (event->type == SelectionRequest)
{
handleSelectionRequest(event);
return;
}
_GLFWwindow* window = NULL;
if (XFindContext(_glfw.x11.display,
event->xany.window,
_glfw.x11.context,
(XPointer*) &window) != 0)
{
// This is an event for a window that has already been destroyed
return;
}
switch (event->type)
{
case ReparentNotify:
{
window->x11.parent = event->xreparent.parent;
return;
}
case KeyPress:
{
const int key = translateKey(keycode);
const int mods = translateState(event->xkey.state);
const int plain = !(mods & (GLFW_MOD_CONTROL | GLFW_MOD_ALT));
if (window->x11.ic)
{
// HACK: Do not report the key press events duplicated by XIM
// Duplicate key releases are filtered out implicitly by
// the GLFW key repeat logic in _glfwInputKey
// A timestamp per key is used to handle simultaneous keys
// NOTE: Always allow the first event for each key through
// (the server never sends a timestamp of zero)
// NOTE: Timestamp difference is compared to handle wrap-around
Time diff = event->xkey.time - window->x11.keyPressTimes[keycode];
if (diff == event->xkey.time || (diff > 0 && diff < ((Time)1 << 31)))
{
if (keycode)
_glfwInputKey(window, key, keycode, GLFW_PRESS, mods);
window->x11.keyPressTimes[keycode] = event->xkey.time;
}
if (!filtered)
{
int count;
Status status;
#if defined(X_HAVE_UTF8_STRING)
char buffer[100];
char* chars = buffer;
count = Xutf8LookupString(window->x11.ic,
&event->xkey,
buffer, sizeof(buffer) - 1,
NULL, &status);
if (status == XBufferOverflow)
{
chars = calloc(count + 1, 1);
count = Xutf8LookupString(window->x11.ic,
&event->xkey,
chars, count,
NULL, &status);
}
if (status == XLookupChars || status == XLookupBoth)
{
const char* c = chars;
chars[count] = '\0';
while (c - chars < count)
_glfwInputChar(window, decodeUTF8(&c), mods, plain);
}
#else /*X_HAVE_UTF8_STRING*/
wchar_t buffer[16];
wchar_t* chars = buffer;
count = XwcLookupString(window->x11.ic,
&event->xkey,
buffer,
sizeof(buffer) / sizeof(wchar_t),
NULL,
&status);
if (status == XBufferOverflow)
{
chars = calloc(count, sizeof(wchar_t));
count = XwcLookupString(window->x11.ic,
&event->xkey,
chars, count,
NULL, &status);
}
if (status == XLookupChars || status == XLookupBoth)
{
int i;
for (i = 0; i < count; i++)
_glfwInputChar(window, chars[i], mods, plain);
}
#endif /*X_HAVE_UTF8_STRING*/
if (chars != buffer)
free(chars);
}
}
else
{
KeySym keysym;
XLookupString(&event->xkey, NULL, 0, &keysym, NULL);
_glfwInputKey(window, key, keycode, GLFW_PRESS, mods);
const uint32_t codepoint = _glfwKeySym2Unicode(keysym);
if (codepoint != GLFW_INVALID_CODEPOINT)
_glfwInputChar(window, codepoint, mods, plain);
}
return;
}
case KeyRelease:
{
const int key = translateKey(keycode);
const int mods = translateState(event->xkey.state);
if (!_glfw.x11.xkb.detectable)
{
// HACK: Key repeat events will arrive as KeyRelease/KeyPress
// pairs with similar or identical time stamps
// The key repeat logic in _glfwInputKey expects only key
// presses to repeat, so detect and discard release events
if (XEventsQueued(_glfw.x11.display, QueuedAfterReading))
{
XEvent next;
XPeekEvent(_glfw.x11.display, &next);
if (next.type == KeyPress &&
next.xkey.window == event->xkey.window &&
next.xkey.keycode == keycode)
{
// HACK: The time of repeat events sometimes doesn't
// match that of the press event, so add an
// epsilon
// Toshiyuki Takahashi can press a button
// 16 times per second so it's fairly safe to
// assume that no human is pressing the key 50
// times per second (value is ms)
if ((next.xkey.time - event->xkey.time) < 20)
{
// This is very likely a server-generated key repeat
// event, so ignore it
return;
}
}
}
}
_glfwInputKey(window, key, keycode, GLFW_RELEASE, mods);
return;
}
case ButtonPress:
{
const int mods = translateState(event->xbutton.state);
if (event->xbutton.button == Button1)
_glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_LEFT, GLFW_PRESS, mods);
else if (event->xbutton.button == Button2)
_glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_MIDDLE, GLFW_PRESS, mods);
else if (event->xbutton.button == Button3)
_glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_RIGHT, GLFW_PRESS, mods);
// Modern X provides scroll events as mouse button presses
else if (event->xbutton.button == Button4)
_glfwInputScroll(window, 0.0, 1.0);
else if (event->xbutton.button == Button5)
_glfwInputScroll(window, 0.0, -1.0);
else if (event->xbutton.button == Button6)
_glfwInputScroll(window, 1.0, 0.0);
else if (event->xbutton.button == Button7)
_glfwInputScroll(window, -1.0, 0.0);
else
{
// Additional buttons after 7 are treated as regular buttons
// We subtract 4 to fill the gap left by scroll input above
_glfwInputMouseClick(window,
event->xbutton.button - Button1 - 4,
GLFW_PRESS,
mods);
}
return;
}
case ButtonRelease:
{
const int mods = translateState(event->xbutton.state);
if (event->xbutton.button == Button1)
{
_glfwInputMouseClick(window,
GLFW_MOUSE_BUTTON_LEFT,
GLFW_RELEASE,
mods);
}
else if (event->xbutton.button == Button2)
{
_glfwInputMouseClick(window,
GLFW_MOUSE_BUTTON_MIDDLE,
GLFW_RELEASE,
mods);
}
else if (event->xbutton.button == Button3)
{
_glfwInputMouseClick(window,
GLFW_MOUSE_BUTTON_RIGHT,
GLFW_RELEASE,
mods);
}
else if (event->xbutton.button > Button7)
{
// Additional buttons after 7 are treated as regular buttons
// We subtract 4 to fill the gap left by scroll input above
_glfwInputMouseClick(window,
event->xbutton.button - Button1 - 4,
GLFW_RELEASE,
mods);
}
return;
}
case EnterNotify:
{
// XEnterWindowEvent is XCrossingEvent
const int x = event->xcrossing.x;
const int y = event->xcrossing.y;
// HACK: This is a workaround for WMs (KWM, Fluxbox) that otherwise
// ignore the defined cursor for hidden cursor mode
if (window->cursorMode == GLFW_CURSOR_HIDDEN)
updateCursorImage(window);
_glfwInputCursorEnter(window, GLFW_TRUE);
_glfwInputCursorPos(window, x, y);
window->x11.lastCursorPosX = x;
window->x11.lastCursorPosY = y;
return;
}
case LeaveNotify:
{
_glfwInputCursorEnter(window, GLFW_FALSE);
return;
}
case MotionNotify:
{
const int x = event->xmotion.x;
const int y = event->xmotion.y;
if (x != window->x11.warpCursorPosX ||
y != window->x11.warpCursorPosY)
{
// The cursor was moved by something other than GLFW
if (window->cursorMode == GLFW_CURSOR_DISABLED)
{
if (_glfw.x11.disabledCursorWindow != window)
return;
if (window->rawMouseMotion)
return;
const int dx = x - window->x11.lastCursorPosX;
const int dy = y - window->x11.lastCursorPosY;
_glfwInputCursorPos(window,
window->virtualCursorPosX + dx,
window->virtualCursorPosY + dy);
}
else
_glfwInputCursorPos(window, x, y);
}
window->x11.lastCursorPosX = x;
window->x11.lastCursorPosY = y;
return;
}
case ConfigureNotify:
{
if (event->xconfigure.width != window->x11.width ||
event->xconfigure.height != window->x11.height)
{
_glfwInputFramebufferSize(window,
event->xconfigure.width,
event->xconfigure.height);
_glfwInputWindowSize(window,
event->xconfigure.width,
event->xconfigure.height);
window->x11.width = event->xconfigure.width;
window->x11.height = event->xconfigure.height;
}
int xpos = event->xconfigure.x;
int ypos = event->xconfigure.y;
// NOTE: ConfigureNotify events from the server are in local
// coordinates, so if we are reparented we need to translate
// the position into root (screen) coordinates
if (!event->xany.send_event && window->x11.parent != _glfw.x11.root)
{
_glfwGrabErrorHandlerX11();
Window dummy;
XTranslateCoordinates(_glfw.x11.display,
window->x11.parent,
_glfw.x11.root,
xpos, ypos,
&xpos, &ypos,
&dummy);
_glfwReleaseErrorHandlerX11();
if (_glfw.x11.errorCode == BadWindow)
return;
}
if (xpos != window->x11.xpos || ypos != window->x11.ypos)
{
_glfwInputWindowPos(window, xpos, ypos);
window->x11.xpos = xpos;
window->x11.ypos = ypos;
}
return;
}
case ClientMessage:
{
// Custom client message, probably from the window manager
if (filtered)
return;
if (event->xclient.message_type == None)
return;
if (event->xclient.message_type == _glfw.x11.WM_PROTOCOLS)
{
const Atom protocol = event->xclient.data.l[0];
if (protocol == None)
return;
if (protocol == _glfw.x11.WM_DELETE_WINDOW)
{
// The window manager was asked to close the window, for
// example by the user pressing a 'close' window decoration
// button
_glfwInputWindowCloseRequest(window);
}
else if (protocol == _glfw.x11.NET_WM_PING)
{
// The window manager is pinging the application to ensure
// it's still responding to events
XEvent reply = *event;
reply.xclient.window = _glfw.x11.root;
XSendEvent(_glfw.x11.display, _glfw.x11.root,
False,
SubstructureNotifyMask | SubstructureRedirectMask,
&reply);
}
}
else if (event->xclient.message_type == _glfw.x11.XdndEnter)
{
// A drag operation has entered the window
unsigned long i, count;
Atom* formats = NULL;
const GLFWbool list = event->xclient.data.l[1] & 1;
_glfw.x11.xdnd.source = event->xclient.data.l[0];
_glfw.x11.xdnd.version = event->xclient.data.l[1] >> 24;
_glfw.x11.xdnd.format = None;
if (_glfw.x11.xdnd.version > _GLFW_XDND_VERSION)
return;
if (list)
{
count = _glfwGetWindowPropertyX11(_glfw.x11.xdnd.source,
_glfw.x11.XdndTypeList,
XA_ATOM,
(unsigned char**) &formats);
}
else
{
count = 3;
formats = (Atom*) event->xclient.data.l + 2;
}
for (i = 0; i < count; i++)
{
if (formats[i] == _glfw.x11.text_uri_list)
{
_glfw.x11.xdnd.format = _glfw.x11.text_uri_list;
break;
}
}
if (list && formats)
XFree(formats);
}
else if (event->xclient.message_type == _glfw.x11.XdndDrop)
{
// The drag operation has finished by dropping on the window
Time time = CurrentTime;
if (_glfw.x11.xdnd.version > _GLFW_XDND_VERSION)
return;
if (_glfw.x11.xdnd.format)
{
if (_glfw.x11.xdnd.version >= 1)
time = event->xclient.data.l[2];
// Request the chosen format from the source window
XConvertSelection(_glfw.x11.display,
_glfw.x11.XdndSelection,
_glfw.x11.xdnd.format,
_glfw.x11.XdndSelection,
window->x11.handle,
time);
}
else if (_glfw.x11.xdnd.version >= 2)
{
XEvent reply = { ClientMessage };
reply.xclient.window = _glfw.x11.xdnd.source;
reply.xclient.message_type = _glfw.x11.XdndFinished;
reply.xclient.format = 32;
reply.xclient.data.l[0] = window->x11.handle;
reply.xclient.data.l[1] = 0; // The drag was rejected
reply.xclient.data.l[2] = None;
XSendEvent(_glfw.x11.display, _glfw.x11.xdnd.source,
False, NoEventMask, &reply);
XFlush(_glfw.x11.display);
}
}
else if (event->xclient.message_type == _glfw.x11.XdndPosition)
{
// The drag operation has moved over the window
const int xabs = (event->xclient.data.l[2] >> 16) & 0xffff;
const int yabs = (event->xclient.data.l[2]) & 0xffff;
Window dummy;
int xpos, ypos;
if (_glfw.x11.xdnd.version > _GLFW_XDND_VERSION)
return;
XTranslateCoordinates(_glfw.x11.display,
_glfw.x11.root,
window->x11.handle,
xabs, yabs,
&xpos, &ypos,
&dummy);
_glfwInputCursorPos(window, xpos, ypos);
XEvent reply = { ClientMessage };
reply.xclient.window = _glfw.x11.xdnd.source;
reply.xclient.message_type = _glfw.x11.XdndStatus;
reply.xclient.format = 32;
reply.xclient.data.l[0] = window->x11.handle;
reply.xclient.data.l[2] = 0; // Specify an empty rectangle
reply.xclient.data.l[3] = 0;
if (_glfw.x11.xdnd.format)
{
// Reply that we are ready to copy the dragged data
reply.xclient.data.l[1] = 1; // Accept with no rectangle
if (_glfw.x11.xdnd.version >= 2)
reply.xclient.data.l[4] = _glfw.x11.XdndActionCopy;
}
XSendEvent(_glfw.x11.display, _glfw.x11.xdnd.source,
False, NoEventMask, &reply);
XFlush(_glfw.x11.display);
}
return;
}
case SelectionNotify:
{
if (event->xselection.property == _glfw.x11.XdndSelection)
{
// The converted data from the drag operation has arrived
char* data;
const unsigned long result =
_glfwGetWindowPropertyX11(event->xselection.requestor,
event->xselection.property,
event->xselection.target,
(unsigned char**) &data);
if (result)
{
int i, count;
char** paths = _glfwParseUriList(data, &count);
_glfwInputDrop(window, count, (const char**) paths);
for (i = 0; i < count; i++)
free(paths[i]);
free(paths);
}
if (data)
XFree(data);
if (_glfw.x11.xdnd.version >= 2)
{
XEvent reply = { ClientMessage };
reply.xclient.window = _glfw.x11.xdnd.source;
reply.xclient.message_type = _glfw.x11.XdndFinished;
reply.xclient.format = 32;
reply.xclient.data.l[0] = window->x11.handle;
reply.xclient.data.l[1] = result;
reply.xclient.data.l[2] = _glfw.x11.XdndActionCopy;
XSendEvent(_glfw.x11.display, _glfw.x11.xdnd.source,
False, NoEventMask, &reply);
XFlush(_glfw.x11.display);
}
}
return;
}
case FocusIn:
{
if (event->xfocus.mode == NotifyGrab ||
event->xfocus.mode == NotifyUngrab)
{
// Ignore focus events from popup indicator windows, window menu
// key chords and window dragging
return;
}
if (window->cursorMode == GLFW_CURSOR_DISABLED)
disableCursor(window);
if (window->x11.ic)
XSetICFocus(window->x11.ic);
_glfwInputWindowFocus(window, GLFW_TRUE);
return;
}
case FocusOut:
{
if (event->xfocus.mode == NotifyGrab ||
event->xfocus.mode == NotifyUngrab)
{
// Ignore focus events from popup indicator windows, window menu
// key chords and window dragging
return;
}
if (window->cursorMode == GLFW_CURSOR_DISABLED)
enableCursor(window);
if (window->x11.ic)
XUnsetICFocus(window->x11.ic);
if (window->monitor && window->autoIconify)
_glfwPlatformIconifyWindow(window);
_glfwInputWindowFocus(window, GLFW_FALSE);
return;
}
case Expose:
{
_glfwInputWindowDamage(window);
return;
}
case PropertyNotify:
{
if (event->xproperty.state != PropertyNewValue)
return;
if (event->xproperty.atom == _glfw.x11.WM_STATE)
{
const int state = getWindowState(window);
if (state != IconicState && state != NormalState)
return;
const GLFWbool iconified = (state == IconicState);
if (window->x11.iconified != iconified)
{
if (window->monitor)
{
if (iconified)
releaseMonitor(window);
else
acquireMonitor(window);
}
window->x11.iconified = iconified;
_glfwInputWindowIconify(window, iconified);
}
}
else if (event->xproperty.atom == _glfw.x11.NET_WM_STATE)
{
const GLFWbool maximized = _glfwPlatformWindowMaximized(window);
if (window->x11.maximized != maximized)
{
window->x11.maximized = maximized;
_glfwInputWindowMaximize(window, maximized);
}
}
return;
}
case DestroyNotify:
return;
}
}
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
// Retrieve a single window property of the specified type
// Inspired by fghGetWindowProperty from freeglut
//
unsigned long _glfwGetWindowPropertyX11(Window window,
Atom property,
Atom type,
unsigned char** value)
{
Atom actualType;
int actualFormat;
unsigned long itemCount, bytesAfter;
XGetWindowProperty(_glfw.x11.display,
window,
property,
0,
LONG_MAX,
False,
type,
&actualType,
&actualFormat,
&itemCount,
&bytesAfter,
value);
return itemCount;
}
GLFWbool _glfwIsVisualTransparentX11(Visual* visual)
{
if (!_glfw.x11.xrender.available)
return GLFW_FALSE;
XRenderPictFormat* pf = XRenderFindVisualFormat(_glfw.x11.display, visual);
return pf && pf->direct.alphaMask;
}
// Push contents of our selection to clipboard manager
//
void _glfwPushSelectionToManagerX11(void)
{
XConvertSelection(_glfw.x11.display,
_glfw.x11.CLIPBOARD_MANAGER,
_glfw.x11.SAVE_TARGETS,
None,
_glfw.x11.helperWindowHandle,
CurrentTime);
for (;;)
{
XEvent event;
while (XCheckIfEvent(_glfw.x11.display, &event, isSelectionEvent, NULL))
{
switch (event.type)
{
case SelectionRequest:
handleSelectionRequest(&event);
break;
case SelectionNotify:
{
if (event.xselection.target == _glfw.x11.SAVE_TARGETS)
{
// This means one of two things; either the selection
// was not owned, which means there is no clipboard
// manager, or the transfer to the clipboard manager has
// completed
// In either case, it means we are done here
return;
}
break;
}
}
}
waitForX11Event(NULL);
}
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
int _glfwPlatformCreateWindow(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
const _GLFWctxconfig* ctxconfig,
const _GLFWfbconfig* fbconfig)
{
Visual* visual = NULL;
int depth;
if (ctxconfig->client != GLFW_NO_API)
{
if (ctxconfig->source == GLFW_NATIVE_CONTEXT_API)
{
if (!_glfwInitGLX())
return GLFW_FALSE;
if (!_glfwChooseVisualGLX(wndconfig, ctxconfig, fbconfig, &visual, &depth))
return GLFW_FALSE;
}
else if (ctxconfig->source == GLFW_EGL_CONTEXT_API)
{
if (!_glfwInitEGL())
return GLFW_FALSE;
if (!_glfwChooseVisualEGL(wndconfig, ctxconfig, fbconfig, &visual, &depth))
return GLFW_FALSE;
}
else if (ctxconfig->source == GLFW_OSMESA_CONTEXT_API)
{
if (!_glfwInitOSMesa())
return GLFW_FALSE;
}
}
if (!visual)
{
visual = DefaultVisual(_glfw.x11.display, _glfw.x11.screen);
depth = DefaultDepth(_glfw.x11.display, _glfw.x11.screen);
}
if (!createNativeWindow(window, wndconfig, visual, depth))
return GLFW_FALSE;
if (ctxconfig->client != GLFW_NO_API)
{
if (ctxconfig->source == GLFW_NATIVE_CONTEXT_API)
{
if (!_glfwCreateContextGLX(window, ctxconfig, fbconfig))
return GLFW_FALSE;
}
else if (ctxconfig->source == GLFW_EGL_CONTEXT_API)
{
if (!_glfwCreateContextEGL(window, ctxconfig, fbconfig))
return GLFW_FALSE;
}
else if (ctxconfig->source == GLFW_OSMESA_CONTEXT_API)
{
if (!_glfwCreateContextOSMesa(window, ctxconfig, fbconfig))
return GLFW_FALSE;
}
if (!_glfwRefreshContextAttribs(window, ctxconfig))
return GLFW_FALSE;
}
if (wndconfig->mousePassthrough)
_glfwPlatformSetWindowMousePassthrough(window, GLFW_TRUE);
if (window->monitor)
{
_glfwPlatformShowWindow(window);
updateWindowMode(window);
acquireMonitor(window);
if (wndconfig->centerCursor)
_glfwCenterCursorInContentArea(window);
}
else
{
if (wndconfig->visible)
{
_glfwPlatformShowWindow(window);
if (wndconfig->focused)
_glfwPlatformFocusWindow(window);
}
}
XFlush(_glfw.x11.display);
return GLFW_TRUE;
}
void _glfwPlatformDestroyWindow(_GLFWwindow* window)
{
if (_glfw.x11.disabledCursorWindow == window)
_glfw.x11.disabledCursorWindow = NULL;
if (window->monitor)
releaseMonitor(window);
if (window->x11.ic)
{
XDestroyIC(window->x11.ic);
window->x11.ic = NULL;
}
if (window->context.destroy)
window->context.destroy(window);
if (window->x11.handle)
{
XDeleteContext(_glfw.x11.display, window->x11.handle, _glfw.x11.context);
XUnmapWindow(_glfw.x11.display, window->x11.handle);
XDestroyWindow(_glfw.x11.display, window->x11.handle);
window->x11.handle = (Window) 0;
}
if (window->x11.colormap)
{
XFreeColormap(_glfw.x11.display, window->x11.colormap);
window->x11.colormap = (Colormap) 0;
}
XFlush(_glfw.x11.display);
}
void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title)
{
#if defined(X_HAVE_UTF8_STRING)
Xutf8SetWMProperties(_glfw.x11.display,
window->x11.handle,
title, title,
NULL, 0,
NULL, NULL, NULL);
#else
// This may be a slightly better fallback than using XStoreName and
// XSetIconName, which always store their arguments using STRING
XmbSetWMProperties(_glfw.x11.display,
window->x11.handle,
title, title,
NULL, 0,
NULL, NULL, NULL);
#endif
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_NAME, _glfw.x11.UTF8_STRING, 8,
PropModeReplace,
(unsigned char*) title, strlen(title));
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_ICON_NAME, _glfw.x11.UTF8_STRING, 8,
PropModeReplace,
(unsigned char*) title, strlen(title));
XFlush(_glfw.x11.display);
}
void _glfwPlatformSetWindowIcon(_GLFWwindow* window,
int count, const GLFWimage* images)
{
if (count)
{
int i, j, longCount = 0;
for (i = 0; i < count; i++)
longCount += 2 + images[i].width * images[i].height;
unsigned long* icon = calloc(longCount, sizeof(unsigned long));
unsigned long* target = icon;
for (i = 0; i < count; i++)
{
*target++ = images[i].width;
*target++ = images[i].height;
for (j = 0; j < images[i].width * images[i].height; j++)
{
*target++ = (((unsigned long) images[i].pixels[j * 4 + 0]) << 16) |
(((unsigned long) images[i].pixels[j * 4 + 1]) << 8) |
(((unsigned long) images[i].pixels[j * 4 + 2]) << 0) |
(((unsigned long) images[i].pixels[j * 4 + 3]) << 24);
}
}
// NOTE: XChangeProperty expects 32-bit values like the image data above to be
// placed in the 32 least significant bits of individual longs. This is
// true even if long is 64-bit and a WM protocol calls for "packed" data.
// This is because of a historical mistake that then became part of the Xlib
// ABI. Xlib will pack these values into a regular array of 32-bit values
// before sending it over the wire.
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_ICON,
XA_CARDINAL, 32,
PropModeReplace,
(unsigned char*) icon,
longCount);
free(icon);
}
else
{
XDeleteProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_ICON);
}
XFlush(_glfw.x11.display);
}
void _glfwPlatformGetWindowPos(_GLFWwindow* window, int* xpos, int* ypos)
{
Window dummy;
int x, y;
XTranslateCoordinates(_glfw.x11.display, window->x11.handle, _glfw.x11.root,
0, 0, &x, &y, &dummy);
if (xpos)
*xpos = x;
if (ypos)
*ypos = y;
}
void _glfwPlatformSetWindowPos(_GLFWwindow* window, int xpos, int ypos)
{
// HACK: Explicitly setting PPosition to any value causes some WMs, notably
// Compiz and Metacity, to honor the position of unmapped windows
if (!_glfwPlatformWindowVisible(window))
{
long supplied;
XSizeHints* hints = XAllocSizeHints();
if (XGetWMNormalHints(_glfw.x11.display, window->x11.handle, hints, &supplied))
{
hints->flags |= PPosition;
hints->x = hints->y = 0;
XSetWMNormalHints(_glfw.x11.display, window->x11.handle, hints);
}
XFree(hints);
}
XMoveWindow(_glfw.x11.display, window->x11.handle, xpos, ypos);
XFlush(_glfw.x11.display);
}
void _glfwPlatformGetWindowSize(_GLFWwindow* window, int* width, int* height)
{
XWindowAttributes attribs;
XGetWindowAttributes(_glfw.x11.display, window->x11.handle, &attribs);
if (width)
*width = attribs.width;
if (height)
*height = attribs.height;
}
void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height)
{
if (window->monitor)
{
if (window->monitor->window == window)
acquireMonitor(window);
}
else
{
if (!window->resizable)
updateNormalHints(window, width, height);
XResizeWindow(_glfw.x11.display, window->x11.handle, width, height);
}
XFlush(_glfw.x11.display);
}
void _glfwPlatformSetWindowSizeLimits(_GLFWwindow* window,
int minwidth, int minheight,
int maxwidth, int maxheight)
{
int width, height;
_glfwPlatformGetWindowSize(window, &width, &height);
updateNormalHints(window, width, height);
XFlush(_glfw.x11.display);
}
void _glfwPlatformSetWindowAspectRatio(_GLFWwindow* window, int numer, int denom)
{
int width, height;
_glfwPlatformGetWindowSize(window, &width, &height);
updateNormalHints(window, width, height);
XFlush(_glfw.x11.display);
}
void _glfwPlatformGetFramebufferSize(_GLFWwindow* window, int* width, int* height)
{
_glfwPlatformGetWindowSize(window, width, height);
}
void _glfwPlatformGetWindowFrameSize(_GLFWwindow* window,
int* left, int* top,
int* right, int* bottom)
{
long* extents = NULL;
if (window->monitor || !window->decorated)
return;
if (_glfw.x11.NET_FRAME_EXTENTS == None)
return;
if (!_glfwPlatformWindowVisible(window) &&
_glfw.x11.NET_REQUEST_FRAME_EXTENTS)
{
XEvent event;
double timeout = 0.5;
// Ensure _NET_FRAME_EXTENTS is set, allowing glfwGetWindowFrameSize to
// function before the window is mapped
sendEventToWM(window, _glfw.x11.NET_REQUEST_FRAME_EXTENTS,
0, 0, 0, 0, 0);
// HACK: Use a timeout because earlier versions of some window managers
// (at least Unity, Fluxbox and Xfwm) failed to send the reply
// They have been fixed but broken versions are still in the wild
// If you are affected by this and your window manager is NOT
// listed above, PLEASE report it to their and our issue trackers
while (!XCheckIfEvent(_glfw.x11.display,
&event,
isFrameExtentsEvent,
(XPointer) window))
{
if (!waitForX11Event(&timeout))
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: The window manager has a broken _NET_REQUEST_FRAME_EXTENTS implementation; please report this issue");
return;
}
}
}
if (_glfwGetWindowPropertyX11(window->x11.handle,
_glfw.x11.NET_FRAME_EXTENTS,
XA_CARDINAL,
(unsigned char**) &extents) == 4)
{
if (left)
*left = extents[0];
if (top)
*top = extents[2];
if (right)
*right = extents[1];
if (bottom)
*bottom = extents[3];
}
if (extents)
XFree(extents);
}
void _glfwPlatformGetWindowContentScale(_GLFWwindow* window,
float* xscale, float* yscale)
{
if (xscale)
*xscale = _glfw.x11.contentScaleX;
if (yscale)
*yscale = _glfw.x11.contentScaleY;
}
void _glfwPlatformIconifyWindow(_GLFWwindow* window)
{
if (window->x11.overrideRedirect)
{
// Override-redirect windows cannot be iconified or restored, as those
// tasks are performed by the window manager
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: Iconification of full screen windows requires a WM that supports EWMH full screen");
return;
}
XIconifyWindow(_glfw.x11.display, window->x11.handle, _glfw.x11.screen);
XFlush(_glfw.x11.display);
}
void _glfwPlatformRestoreWindow(_GLFWwindow* window)
{
if (window->x11.overrideRedirect)
{
// Override-redirect windows cannot be iconified or restored, as those
// tasks are performed by the window manager
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: Iconification of full screen windows requires a WM that supports EWMH full screen");
return;
}
if (_glfwPlatformWindowIconified(window))
{
XMapWindow(_glfw.x11.display, window->x11.handle);
waitForVisibilityNotify(window);
}
else if (_glfwPlatformWindowVisible(window))
{
if (_glfw.x11.NET_WM_STATE &&
_glfw.x11.NET_WM_STATE_MAXIMIZED_VERT &&
_glfw.x11.NET_WM_STATE_MAXIMIZED_HORZ)
{
sendEventToWM(window,
_glfw.x11.NET_WM_STATE,
_NET_WM_STATE_REMOVE,
_glfw.x11.NET_WM_STATE_MAXIMIZED_VERT,
_glfw.x11.NET_WM_STATE_MAXIMIZED_HORZ,
1, 0);
}
}
XFlush(_glfw.x11.display);
}
void _glfwPlatformMaximizeWindow(_GLFWwindow* window)
{
if (!_glfw.x11.NET_WM_STATE ||
!_glfw.x11.NET_WM_STATE_MAXIMIZED_VERT ||
!_glfw.x11.NET_WM_STATE_MAXIMIZED_HORZ)
{
return;
}
if (_glfwPlatformWindowVisible(window))
{
sendEventToWM(window,
_glfw.x11.NET_WM_STATE,
_NET_WM_STATE_ADD,
_glfw.x11.NET_WM_STATE_MAXIMIZED_VERT,
_glfw.x11.NET_WM_STATE_MAXIMIZED_HORZ,
1, 0);
}
else
{
Atom* states = NULL;
unsigned long count =
_glfwGetWindowPropertyX11(window->x11.handle,
_glfw.x11.NET_WM_STATE,
XA_ATOM,
(unsigned char**) &states);
// NOTE: We don't check for failure as this property may not exist yet
// and that's fine (and we'll create it implicitly with append)
Atom missing[2] =
{
_glfw.x11.NET_WM_STATE_MAXIMIZED_VERT,
_glfw.x11.NET_WM_STATE_MAXIMIZED_HORZ
};
unsigned long missingCount = 2;
for (unsigned long i = 0; i < count; i++)
{
for (unsigned long j = 0; j < missingCount; j++)
{
if (states[i] == missing[j])
{
missing[j] = missing[missingCount - 1];
missingCount--;
}
}
}
if (states)
XFree(states);
if (!missingCount)
return;
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_STATE, XA_ATOM, 32,
PropModeAppend,
(unsigned char*) missing,
missingCount);
}
XFlush(_glfw.x11.display);
}
void _glfwPlatformShowWindow(_GLFWwindow* window)
{
if (_glfwPlatformWindowVisible(window))
return;
XMapWindow(_glfw.x11.display, window->x11.handle);
waitForVisibilityNotify(window);
}
void _glfwPlatformHideWindow(_GLFWwindow* window)
{
XUnmapWindow(_glfw.x11.display, window->x11.handle);
XFlush(_glfw.x11.display);
}
void _glfwPlatformRequestWindowAttention(_GLFWwindow* window)
{
if (!_glfw.x11.NET_WM_STATE || !_glfw.x11.NET_WM_STATE_DEMANDS_ATTENTION)
return;
sendEventToWM(window,
_glfw.x11.NET_WM_STATE,
_NET_WM_STATE_ADD,
_glfw.x11.NET_WM_STATE_DEMANDS_ATTENTION,
0, 1, 0);
}
void _glfwPlatformFocusWindow(_GLFWwindow* window)
{
if (_glfw.x11.NET_ACTIVE_WINDOW)
sendEventToWM(window, _glfw.x11.NET_ACTIVE_WINDOW, 1, 0, 0, 0, 0);
else if (_glfwPlatformWindowVisible(window))
{
XRaiseWindow(_glfw.x11.display, window->x11.handle);
XSetInputFocus(_glfw.x11.display, window->x11.handle,
RevertToParent, CurrentTime);
}
XFlush(_glfw.x11.display);
}
void _glfwPlatformSetWindowMonitor(_GLFWwindow* window,
_GLFWmonitor* monitor,
int xpos, int ypos,
int width, int height,
int refreshRate)
{
if (window->monitor == monitor)
{
if (monitor)
{
if (monitor->window == window)
acquireMonitor(window);
}
else
{
if (!window->resizable)
updateNormalHints(window, width, height);
XMoveResizeWindow(_glfw.x11.display, window->x11.handle,
xpos, ypos, width, height);
}
XFlush(_glfw.x11.display);
return;
}
if (window->monitor)
{
_glfwPlatformSetWindowDecorated(window, window->decorated);
_glfwPlatformSetWindowFloating(window, window->floating);
releaseMonitor(window);
}
_glfwInputWindowMonitor(window, monitor);
updateNormalHints(window, width, height);
if (window->monitor)
{
if (!_glfwPlatformWindowVisible(window))
{
XMapRaised(_glfw.x11.display, window->x11.handle);
waitForVisibilityNotify(window);
}
updateWindowMode(window);
acquireMonitor(window);
}
else
{
updateWindowMode(window);
XMoveResizeWindow(_glfw.x11.display, window->x11.handle,
xpos, ypos, width, height);
}
XFlush(_glfw.x11.display);
}
int _glfwPlatformWindowFocused(_GLFWwindow* window)
{
Window focused;
int state;
XGetInputFocus(_glfw.x11.display, &focused, &state);
return window->x11.handle == focused;
}
int _glfwPlatformWindowIconified(_GLFWwindow* window)
{
return getWindowState(window) == IconicState;
}
int _glfwPlatformWindowVisible(_GLFWwindow* window)
{
XWindowAttributes wa;
XGetWindowAttributes(_glfw.x11.display, window->x11.handle, &wa);
return wa.map_state == IsViewable;
}
int _glfwPlatformWindowMaximized(_GLFWwindow* window)
{
Atom* states;
unsigned long i;
GLFWbool maximized = GLFW_FALSE;
if (!_glfw.x11.NET_WM_STATE ||
!_glfw.x11.NET_WM_STATE_MAXIMIZED_VERT ||
!_glfw.x11.NET_WM_STATE_MAXIMIZED_HORZ)
{
return maximized;
}
const unsigned long count =
_glfwGetWindowPropertyX11(window->x11.handle,
_glfw.x11.NET_WM_STATE,
XA_ATOM,
(unsigned char**) &states);
for (i = 0; i < count; i++)
{
if (states[i] == _glfw.x11.NET_WM_STATE_MAXIMIZED_VERT ||
states[i] == _glfw.x11.NET_WM_STATE_MAXIMIZED_HORZ)
{
maximized = GLFW_TRUE;
break;
}
}
if (states)
XFree(states);
return maximized;
}
int _glfwPlatformWindowHovered(_GLFWwindow* window)
{
Window w = _glfw.x11.root;
while (w)
{
Window root;
int rootX, rootY, childX, childY;
unsigned int mask;
_glfwGrabErrorHandlerX11();
const Bool result = XQueryPointer(_glfw.x11.display, w,
&root, &w, &rootX, &rootY,
&childX, &childY, &mask);
_glfwReleaseErrorHandlerX11();
if (_glfw.x11.errorCode == BadWindow)
w = _glfw.x11.root;
else if (!result)
return GLFW_FALSE;
else if (w == window->x11.handle)
return GLFW_TRUE;
}
return GLFW_FALSE;
}
int _glfwPlatformFramebufferTransparent(_GLFWwindow* window)
{
if (!window->x11.transparent)
return GLFW_FALSE;
return XGetSelectionOwner(_glfw.x11.display, _glfw.x11.NET_WM_CM_Sx) != None;
}
void _glfwPlatformSetWindowResizable(_GLFWwindow* window, GLFWbool enabled)
{
int width, height;
_glfwPlatformGetWindowSize(window, &width, &height);
updateNormalHints(window, width, height);
}
void _glfwPlatformSetWindowDecorated(_GLFWwindow* window, GLFWbool enabled)
{
updateWindowHints(window);
}
void _glfwPlatformSetWindowFloating(_GLFWwindow* window, GLFWbool enabled)
{
if (!_glfw.x11.NET_WM_STATE || !_glfw.x11.NET_WM_STATE_ABOVE)
return;
if (_glfwPlatformWindowVisible(window))
{
const long action = enabled ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE;
sendEventToWM(window,
_glfw.x11.NET_WM_STATE,
action,
_glfw.x11.NET_WM_STATE_ABOVE,
0, 1, 0);
}
else
{
Atom* states = NULL;
unsigned long i, count;
count = _glfwGetWindowPropertyX11(window->x11.handle,
_glfw.x11.NET_WM_STATE,
XA_ATOM,
(unsigned char**) &states);
// NOTE: We don't check for failure as this property may not exist yet
// and that's fine (and we'll create it implicitly with append)
if (enabled)
{
for (i = 0; i < count; i++)
{
if (states[i] == _glfw.x11.NET_WM_STATE_ABOVE)
break;
}
if (i == count)
{
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_STATE, XA_ATOM, 32,
PropModeAppend,
(unsigned char*) &_glfw.x11.NET_WM_STATE_ABOVE,
1);
}
}
else if (states)
{
for (i = 0; i < count; i++)
{
if (states[i] == _glfw.x11.NET_WM_STATE_ABOVE)
break;
}
if (i < count)
{
states[i] = states[count - 1];
count--;
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_STATE, XA_ATOM, 32,
PropModeReplace, (unsigned char*) states, count);
}
}
if (states)
XFree(states);
}
XFlush(_glfw.x11.display);
}
void _glfwPlatformSetWindowMousePassthrough(_GLFWwindow* window, GLFWbool enabled)
{
if (!_glfw.x11.xshape.available)
return;
if (enabled)
{
Region region = XCreateRegion();
XShapeCombineRegion(_glfw.x11.display, window->x11.handle,
ShapeInput, 0, 0, region, ShapeSet);
XDestroyRegion(region);
}
else
{
XShapeCombineMask(_glfw.x11.display, window->x11.handle,
ShapeInput, 0, 0, None, ShapeSet);
}
}
float _glfwPlatformGetWindowOpacity(_GLFWwindow* window)
{
float opacity = 1.f;
if (XGetSelectionOwner(_glfw.x11.display, _glfw.x11.NET_WM_CM_Sx))
{
CARD32* value = NULL;
if (_glfwGetWindowPropertyX11(window->x11.handle,
_glfw.x11.NET_WM_WINDOW_OPACITY,
XA_CARDINAL,
(unsigned char**) &value))
{
opacity = (float) (*value / (double) 0xffffffffu);
}
if (value)
XFree(value);
}
return opacity;
}
void _glfwPlatformSetWindowOpacity(_GLFWwindow* window, float opacity)
{
const CARD32 value = (CARD32) (0xffffffffu * (double) opacity);
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_WINDOW_OPACITY, XA_CARDINAL, 32,
PropModeReplace, (unsigned char*) &value, 1);
}
void _glfwPlatformSetRawMouseMotion(_GLFWwindow *window, GLFWbool enabled)
{
if (!_glfw.x11.xi.available)
return;
if (_glfw.x11.disabledCursorWindow != window)
return;
if (enabled)
enableRawMouseMotion(window);
else
disableRawMouseMotion(window);
}
GLFWbool _glfwPlatformRawMouseMotionSupported(void)
{
return _glfw.x11.xi.available;
}
void _glfwPlatformPollEvents(void)
{
drainEmptyEvents();
XPending(_glfw.x11.display);
while (XQLength(_glfw.x11.display))
{
XEvent event;
XNextEvent(_glfw.x11.display, &event);
processEvent(&event);
}
_GLFWwindow* window = _glfw.x11.disabledCursorWindow;
if (window)
{
int width, height;
_glfwPlatformGetWindowSize(window, &width, &height);
// NOTE: Re-center the cursor only if it has moved since the last call,
// to avoid breaking glfwWaitEvents with MotionNotify
if (window->x11.lastCursorPosX != width / 2 ||
window->x11.lastCursorPosY != height / 2)
{
_glfwPlatformSetCursorPos(window, width / 2, height / 2);
}
}
XFlush(_glfw.x11.display);
}
void _glfwPlatformWaitEvents(void)
{
waitForAnyEvent(NULL);
_glfwPlatformPollEvents();
}
void _glfwPlatformWaitEventsTimeout(double timeout)
{
waitForAnyEvent(&timeout);
_glfwPlatformPollEvents();
}
void _glfwPlatformPostEmptyEvent(void)
{
writeEmptyEvent();
}
void _glfwPlatformGetCursorPos(_GLFWwindow* window, double* xpos, double* ypos)
{
Window root, child;
int rootX, rootY, childX, childY;
unsigned int mask;
XQueryPointer(_glfw.x11.display, window->x11.handle,
&root, &child,
&rootX, &rootY, &childX, &childY,
&mask);
if (xpos)
*xpos = childX;
if (ypos)
*ypos = childY;
}
void _glfwPlatformSetCursorPos(_GLFWwindow* window, double x, double y)
{
// Store the new position so it can be recognized later
window->x11.warpCursorPosX = (int) x;
window->x11.warpCursorPosY = (int) y;
XWarpPointer(_glfw.x11.display, None, window->x11.handle,
0,0,0,0, (int) x, (int) y);
XFlush(_glfw.x11.display);
}
void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode)
{
if (mode == GLFW_CURSOR_DISABLED)
{
if (_glfwPlatformWindowFocused(window))
disableCursor(window);
}
else if (_glfw.x11.disabledCursorWindow == window)
enableCursor(window);
else
updateCursorImage(window);
XFlush(_glfw.x11.display);
}
const char* _glfwPlatformGetScancodeName(int scancode)
{
if (!_glfw.x11.xkb.available)
return NULL;
if (scancode < 0 || scancode > 0xff ||
_glfw.x11.keycodes[scancode] == GLFW_KEY_UNKNOWN)
{
_glfwInputError(GLFW_INVALID_VALUE, "Invalid scancode %i", scancode);
return NULL;
}
const int key = _glfw.x11.keycodes[scancode];
const KeySym keysym = XkbKeycodeToKeysym(_glfw.x11.display,
scancode, _glfw.x11.xkb.group, 0);
if (keysym == NoSymbol)
return NULL;
const uint32_t codepoint = _glfwKeySym2Unicode(keysym);
if (codepoint == GLFW_INVALID_CODEPOINT)
return NULL;
const size_t count = _glfwEncodeUTF8(_glfw.x11.keynames[key], codepoint);
if (count == 0)
return NULL;
_glfw.x11.keynames[key][count] = '\0';
return _glfw.x11.keynames[key];
}
int _glfwPlatformGetKeyScancode(int key)
{
return _glfw.x11.scancodes[key];
}
int _glfwPlatformCreateCursor(_GLFWcursor* cursor,
const GLFWimage* image,
int xhot, int yhot)
{
cursor->x11.handle = _glfwCreateCursorX11(image, xhot, yhot);
if (!cursor->x11.handle)
return GLFW_FALSE;
return GLFW_TRUE;
}
int _glfwPlatformCreateStandardCursor(_GLFWcursor* cursor, int shape)
{
// See GLFW 3.4 implementation.
if (_glfw.x11.xcursor.handle)
{
char* theme = XcursorGetTheme(_glfw.x11.display);
if (theme)
{
const int size = XcursorGetDefaultSize(_glfw.x11.display);
const char* name = NULL;
switch (shape)
{
case GLFW_ARROW_CURSOR:
name = "default";
break;
case GLFW_IBEAM_CURSOR:
name = "text";
break;
case GLFW_CROSSHAIR_CURSOR:
name = "crosshair";
break;
case GLFW_HAND_CURSOR:
name = "pointer";
break;
case GLFW_HRESIZE_CURSOR:
name = "ew-resize";
break;
case GLFW_VRESIZE_CURSOR:
name = "ns-resize";
break;
case GLFW_RESIZE_NWSE_CURSOR:
name = "nwse-resize";
break;
case GLFW_RESIZE_NESW_CURSOR:
name = "nesw-resize";
break;
case GLFW_RESIZE_ALL_CURSOR:
name = "all-scroll";
break;
case GLFW_NOT_ALLOWED_CURSOR:
name = "not-allowed";
break;
}
XcursorImage* image = XcursorLibraryLoadImage(name, theme, size);
if (image)
{
cursor->x11.handle = XcursorImageLoadCursor(_glfw.x11.display, image);
XcursorImageDestroy(image);
}
}
}
if (!cursor->x11.handle)
{
unsigned int native = 0;
switch (shape)
{
case GLFW_ARROW_CURSOR:
native = XC_left_ptr;
break;
case GLFW_IBEAM_CURSOR:
native = XC_xterm;
break;
case GLFW_CROSSHAIR_CURSOR:
native = XC_crosshair;
break;
case GLFW_HAND_CURSOR:
native = XC_hand2;
break;
case GLFW_HRESIZE_CURSOR:
native = XC_sb_h_double_arrow;
break;
case GLFW_VRESIZE_CURSOR:
native = XC_sb_v_double_arrow;
break;
case GLFW_RESIZE_ALL_CURSOR:
native = XC_fleur;
break;
default:
//_glfwInputError(GLFW_CURSOR_UNAVAILABLE,
// "X11: Standard cursor shape unavailable");
return GLFW_FALSE;
}
cursor->x11.handle = XCreateFontCursor(_glfw.x11.display, native);
if (!cursor->x11.handle)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: Failed to create standard cursor");
return GLFW_FALSE;
}
}
return GLFW_TRUE;
}
void _glfwPlatformDestroyCursor(_GLFWcursor* cursor)
{
if (cursor->x11.handle)
XFreeCursor(_glfw.x11.display, cursor->x11.handle);
}
void _glfwPlatformSetCursor(_GLFWwindow* window, _GLFWcursor* cursor)
{
if (window->cursorMode == GLFW_CURSOR_NORMAL)
{
updateCursorImage(window);
XFlush(_glfw.x11.display);
}
}
void _glfwPlatformSetClipboardString(const char* string)
{
char* copy = _glfw_strdup(string);
free(_glfw.x11.clipboardString);
_glfw.x11.clipboardString = copy;
XSetSelectionOwner(_glfw.x11.display,
_glfw.x11.CLIPBOARD,
_glfw.x11.helperWindowHandle,
CurrentTime);
if (XGetSelectionOwner(_glfw.x11.display, _glfw.x11.CLIPBOARD) !=
_glfw.x11.helperWindowHandle)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: Failed to become owner of clipboard selection");
}
}
const char* _glfwPlatformGetClipboardString(void)
{
return getSelectionString(_glfw.x11.CLIPBOARD);
}
//////////////////////////////////////////////////////////////////////////
////// GLFW native API //////
//////////////////////////////////////////////////////////////////////////
GLFWAPI Display* glfwGetX11Display(void)
{
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
return _glfw.x11.display;
}
GLFWAPI Window glfwGetX11Window(GLFWwindow* handle)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(None);
return window->x11.handle;
}
GLFWAPI void glfwSetX11SelectionString(const char* string)
{
_GLFW_REQUIRE_INIT();
free(_glfw.x11.primarySelectionString);
_glfw.x11.primarySelectionString = _glfw_strdup(string);
XSetSelectionOwner(_glfw.x11.display,
_glfw.x11.PRIMARY,
_glfw.x11.helperWindowHandle,
CurrentTime);
if (XGetSelectionOwner(_glfw.x11.display, _glfw.x11.PRIMARY) !=
_glfw.x11.helperWindowHandle)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: Failed to become owner of primary selection");
}
}
GLFWAPI const char* glfwGetX11SelectionString(void)
{
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
return getSelectionString(_glfw.x11.PRIMARY);
}
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