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0f9a9578f3
glfw/src/x11_window.c
Camilla Löwy 0f9a9578f3 Add window hints for initial position 
This adds window hints for the initial position, in screen coordinates,
of a window.  The special value GLFW_ANY_POSITION means the window
manager will be allowed to position the window.

It is not possible to set window positions on Wayland and GLFW will
always behave as if these hints are set to GLFW_ANY_POSITION.

Fixes #1603
Fixes #1747
2022-07-29 11:50:13 +02:00

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104 KiB
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//========================================================================
// GLFW 3.4 X11 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2019 Camilla Löwy <elmindreda@glfw.org>
//
// 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
//========================================================================
#include "internal.h"
#include <X11/cursorfont.h>
#include <X11/Xmd.h>
#include <poll.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_DECORATIONS 2
#define MWM_DECOR_ALL 1
#define _GLFW_XDND_VERSION 5
// 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 (!_glfwPollPOSIX(&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 }
};
#if defined(__linux__)
if (_glfw.joysticksInitialized)
fds[count++] = (struct pollfd) { _glfw.linjs.inotify, POLLIN };
#endif
while (!XPending(_glfw.x11.display))
{
if (!_glfwPollPOSIX(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);
}
// Updates the normal hints according to the window settings
//
static void updateNormalHints(_GLFWwindow* window, int width, int height)
{
XSizeHints* hints = XAllocSizeHints();
long supplied;
XGetWMNormalHints(_glfw.x11.display, window->x11.handle, hints, &supplied);
hints->flags &= ~(PMinSize | PMaxSize | PAspect);
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;
}
}
XSetWMNormalHints(_glfw.x11.display, window->x11.handle, hints);
XFree(hints);
}
// 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)
//
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];
}
// 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 = _glfw_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 ||
window->cursorMode == GLFW_CURSOR_CAPTURED)
{
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);
}
}
// Grabs the cursor and confines it to the window
//
static void captureCursor(_GLFWwindow* window)
{
XGrabPointer(_glfw.x11.display, window->x11.handle, True,
ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
GrabModeAsync, GrabModeAsync,
window->x11.handle,
None,
CurrentTime);
}
// Ungrabs the cursor
//
static void releaseCursor(void)
{
XUngrabPointer(_glfw.x11.display, CurrentTime);
}
// 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;
_glfwGetCursorPosX11(window,
&_glfw.x11.restoreCursorPosX,
&_glfw.x11.restoreCursorPosY);
updateCursorImage(window);
_glfwCenterCursorInContentArea(window);
captureCursor(window);
}
// Exit disabled cursor mode for the specified window
//
static void enableCursor(_GLFWwindow* window)
{
if (window->rawMouseMotion)
disableRawMouseMotion(window);
_glfw.x11.disabledCursorWindow = NULL;
releaseCursor();
_glfwSetCursorPosX11(window,
_glfw.x11.restoreCursorPosX,
_glfw.x11.restoreCursorPosY);
updateCursorImage(window);
}
// Clear its handle when the input context has been destroyed
//
static void inputContextDestroyCallback(XIC ic, XPointer clientData, XPointer callData)
{
_GLFWwindow* window = (_GLFWwindow*) clientData;
window->x11.ic = NULL;
}
// 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;
}
int xpos = 0, ypos = 0;
if (wndconfig->xpos != GLFW_ANY_POSITION && wndconfig->ypos != GLFW_ANY_POSITION)
{
xpos = wndconfig->xpos;
ypos = wndconfig->ypos;
}
// 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,
xpos, ypos,
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)
_glfwSetWindowDecoratedX11(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);
}
// Set ICCCM WM_NORMAL_HINTS property
{
XSizeHints* hints = XAllocSizeHints();
if (!hints)
{
_glfwInputError(GLFW_OUT_OF_MEMORY, "X11: Failed to allocate size hints");
return GLFW_FALSE;
}
if (!wndconfig->resizable)
{
hints->flags |= (PMinSize | PMaxSize);
hints->min_width = hints->max_width = width;
hints->min_height = hints->max_height = height;
}
// HACK: Explicitly setting PPosition to any value causes some WMs, notably
// Compiz and Metacity, to honor the position of unmapped windows
if (wndconfig->xpos != GLFW_ANY_POSITION && wndconfig->ypos != GLFW_ANY_POSITION)
{
hints->flags |= PPosition;
hints->x = 0;
hints->y = 0;
}
hints->flags |= PWinGravity;
hints->win_gravity = StaticGravity;
XSetWMNormalHints(_glfw.x11.display, window->x11.handle, hints);
XFree(hints);
}
// 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);
}
if (_glfw.x11.im)
_glfwCreateInputContextX11(window);
_glfwSetWindowTitleX11(window, wndconfig->title);
_glfwGetWindowPosX11(window, &window->x11.xpos, &window->x11.ypos);
_glfwGetWindowSizeX11(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)
{
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;
const unsigned long count =
_glfwGetWindowPropertyX11(request->requestor,
request->property,
_glfw.x11.ATOM_PAIR,
(unsigned char**) &targets);
for (unsigned long 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 (int 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;
}
_glfw_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 = _glfw_realloc(string, size);
string[size - itemCount - 1] = '\0';
strcat(string, data);
}
if (!itemCount)
{
if (string)
{
if (targets[i] == XA_STRING)
{
*selectionString = convertLatin1toUTF8(string);
_glfw_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
_glfwGetMonitorPosX11(window->monitor, &xpos, &ypos);
_glfwGetVideoModeX11(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;
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;
char buffer[100];
char* chars = buffer;
count = Xutf8LookupString(window->x11.ic,
&event->xkey,
buffer, sizeof(buffer) - 1,
NULL, &status);
if (status == XBufferOverflow)
{
chars = _glfw_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);
}
if (chars != buffer)
_glfw_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 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 (unsigned int 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 count;
char** paths = _glfwParseUriList(data, &count);
_glfwInputDrop(window, count, (const char**) paths);
for (int i = 0; i < count; i++)
_glfw_free(paths[i]);
_glfw_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);
else if (window->cursorMode == GLFW_CURSOR_CAPTURED)
captureCursor(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);
else if (window->cursorMode == GLFW_CURSOR_CAPTURED)
releaseCursor();
if (window->x11.ic)
XUnsetICFocus(window->x11.ic);
if (window->monitor && window->autoIconify)
_glfwIconifyWindowX11(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 = _glfwWindowMaximizedX11(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);
}
}
void _glfwCreateInputContextX11(_GLFWwindow* window)
{
XIMCallback callback;
callback.callback = (XIMProc) inputContextDestroyCallback;
callback.client_data = (XPointer) window;
window->x11.ic = XCreateIC(_glfw.x11.im,
XNInputStyle,
XIMPreeditNothing | XIMStatusNothing,
XNClientWindow,
window->x11.handle,
XNFocusWindow,
window->x11.handle,
XNDestroyCallback,
&callback,
NULL);
if (window->x11.ic)
{
XWindowAttributes attribs;
XGetWindowAttributes(_glfw.x11.display, window->x11.handle, &attribs);
unsigned long filter = 0;
if (XGetICValues(window->x11.ic, XNFilterEvents, &filter, NULL) == NULL)
{
XSelectInput(_glfw.x11.display,
window->x11.handle,
attribs.your_event_mask | filter);
}
}
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
GLFWbool _glfwCreateWindowX11(_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)
_glfwSetWindowMousePassthroughX11(window, GLFW_TRUE);
if (window->monitor)
{
_glfwShowWindowX11(window);
updateWindowMode(window);
acquireMonitor(window);
if (wndconfig->centerCursor)
_glfwCenterCursorInContentArea(window);
}
else
{
if (wndconfig->visible)
{
_glfwShowWindowX11(window);
if (wndconfig->focused)
_glfwFocusWindowX11(window);
}
}
XFlush(_glfw.x11.display);
return GLFW_TRUE;
}
void _glfwDestroyWindowX11(_GLFWwindow* window)
{
if (_glfw.x11.disabledCursorWindow == window)
enableCursor(window);
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 _glfwSetWindowTitleX11(_GLFWwindow* window, const char* title)
{
if (_glfw.x11.xlib.utf8)
{
Xutf8SetWMProperties(_glfw.x11.display,
window->x11.handle,
title, title,
NULL, 0,
NULL, NULL, NULL);
}
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 _glfwSetWindowIconX11(_GLFWwindow* window, int count, const GLFWimage* images)
{
if (count)
{
int longCount = 0;
for (int i = 0; i < count; i++)
longCount += 2 + images[i].width * images[i].height;
unsigned long* icon = _glfw_calloc(longCount, sizeof(unsigned long));
unsigned long* target = icon;
for (int i = 0; i < count; i++)
{
*target++ = images[i].width;
*target++ = images[i].height;
for (int 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);
_glfw_free(icon);
}
else
{
XDeleteProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_ICON);
}
XFlush(_glfw.x11.display);
}
void _glfwGetWindowPosX11(_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 _glfwSetWindowPosX11(_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 (!_glfwWindowVisibleX11(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 _glfwGetWindowSizeX11(_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 _glfwSetWindowSizeX11(_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 _glfwSetWindowSizeLimitsX11(_GLFWwindow* window,
int minwidth, int minheight,
int maxwidth, int maxheight)
{
int width, height;
_glfwGetWindowSizeX11(window, &width, &height);
updateNormalHints(window, width, height);
XFlush(_glfw.x11.display);
}
void _glfwSetWindowAspectRatioX11(_GLFWwindow* window, int numer, int denom)
{
int width, height;
_glfwGetWindowSizeX11(window, &width, &height);
updateNormalHints(window, width, height);
XFlush(_glfw.x11.display);
}
void _glfwGetFramebufferSizeX11(_GLFWwindow* window, int* width, int* height)
{
_glfwGetWindowSizeX11(window, width, height);
}
void _glfwGetWindowFrameSizeX11(_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 (!_glfwWindowVisibleX11(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 _glfwGetWindowContentScaleX11(_GLFWwindow* window, float* xscale, float* yscale)
{
if (xscale)
*xscale = _glfw.x11.contentScaleX;
if (yscale)
*yscale = _glfw.x11.contentScaleY;
}
void _glfwIconifyWindowX11(_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 _glfwRestoreWindowX11(_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 (_glfwWindowIconifiedX11(window))
{
XMapWindow(_glfw.x11.display, window->x11.handle);
waitForVisibilityNotify(window);
}
else if (_glfwWindowVisibleX11(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 _glfwMaximizeWindowX11(_GLFWwindow* window)
{
if (!_glfw.x11.NET_WM_STATE ||
!_glfw.x11.NET_WM_STATE_MAXIMIZED_VERT ||
!_glfw.x11.NET_WM_STATE_MAXIMIZED_HORZ)
{
return;
}
if (_glfwWindowVisibleX11(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 _glfwShowWindowX11(_GLFWwindow* window)
{
if (_glfwWindowVisibleX11(window))
return;
XMapWindow(_glfw.x11.display, window->x11.handle);
waitForVisibilityNotify(window);
}
void _glfwHideWindowX11(_GLFWwindow* window)
{
XUnmapWindow(_glfw.x11.display, window->x11.handle);
XFlush(_glfw.x11.display);
}
void _glfwRequestWindowAttentionX11(_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 _glfwFocusWindowX11(_GLFWwindow* window)
{
if (_glfw.x11.NET_ACTIVE_WINDOW)
sendEventToWM(window, _glfw.x11.NET_ACTIVE_WINDOW, 1, 0, 0, 0, 0);
else if (_glfwWindowVisibleX11(window))
{
XRaiseWindow(_glfw.x11.display, window->x11.handle);
XSetInputFocus(_glfw.x11.display, window->x11.handle,
RevertToParent, CurrentTime);
}
XFlush(_glfw.x11.display);
}
void _glfwSetWindowMonitorX11(_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)
{
_glfwSetWindowDecoratedX11(window, window->decorated);
_glfwSetWindowFloatingX11(window, window->floating);
releaseMonitor(window);
}
_glfwInputWindowMonitor(window, monitor);
updateNormalHints(window, width, height);
if (window->monitor)
{
if (!_glfwWindowVisibleX11(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);
}
GLFWbool _glfwWindowFocusedX11(_GLFWwindow* window)
{
Window focused;
int state;
XGetInputFocus(_glfw.x11.display, &focused, &state);
return window->x11.handle == focused;
}
GLFWbool _glfwWindowIconifiedX11(_GLFWwindow* window)
{
return getWindowState(window) == IconicState;
}
GLFWbool _glfwWindowVisibleX11(_GLFWwindow* window)
{
XWindowAttributes wa;
XGetWindowAttributes(_glfw.x11.display, window->x11.handle, &wa);
return wa.map_state == IsViewable;
}
GLFWbool _glfwWindowMaximizedX11(_GLFWwindow* window)
{
Atom* states;
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 (unsigned long 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;
}
GLFWbool _glfwWindowHoveredX11(_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;
}
GLFWbool _glfwFramebufferTransparentX11(_GLFWwindow* window)
{
if (!window->x11.transparent)
return GLFW_FALSE;
return XGetSelectionOwner(_glfw.x11.display, _glfw.x11.NET_WM_CM_Sx) != None;
}
void _glfwSetWindowResizableX11(_GLFWwindow* window, GLFWbool enabled)
{
int width, height;
_glfwGetWindowSizeX11(window, &width, &height);
updateNormalHints(window, width, height);
}
void _glfwSetWindowDecoratedX11(_GLFWwindow* window, GLFWbool enabled)
{
struct
{
unsigned long flags;
unsigned long functions;
unsigned long decorations;
long input_mode;
unsigned long status;
} hints = {0};
hints.flags = MWM_HINTS_DECORATIONS;
hints.decorations = enabled ? MWM_DECOR_ALL : 0;
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));
}
void _glfwSetWindowFloatingX11(_GLFWwindow* window, GLFWbool enabled)
{
if (!_glfw.x11.NET_WM_STATE || !_glfw.x11.NET_WM_STATE_ABOVE)
return;
if (_glfwWindowVisibleX11(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;
const 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)
if (enabled)
{
unsigned long i;
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 (unsigned long i = 0; i < count; i++)
{
if (states[i] == _glfw.x11.NET_WM_STATE_ABOVE)
{
states[i] = states[count - 1];
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_STATE, XA_ATOM, 32,
PropModeReplace, (unsigned char*) states, count - 1);
break;
}
}
}
if (states)
XFree(states);
}
XFlush(_glfw.x11.display);
}
void _glfwSetWindowMousePassthroughX11(_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 _glfwGetWindowOpacityX11(_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 _glfwSetWindowOpacityX11(_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 _glfwSetRawMouseMotionX11(_GLFWwindow *window, GLFWbool enabled)
{
if (!_glfw.x11.xi.available)
return;
if (_glfw.x11.disabledCursorWindow != window)
return;
if (enabled)
enableRawMouseMotion(window);
else
disableRawMouseMotion(window);
}
GLFWbool _glfwRawMouseMotionSupportedX11(void)
{
return _glfw.x11.xi.available;
}
void _glfwPollEventsX11(void)
{
drainEmptyEvents();
#if defined(__linux__)
if (_glfw.joysticksInitialized)
_glfwDetectJoystickConnectionLinux();
#endif
XPending(_glfw.x11.display);
while (QLength(_glfw.x11.display))
{
XEvent event;
XNextEvent(_glfw.x11.display, &event);
processEvent(&event);
}
_GLFWwindow* window = _glfw.x11.disabledCursorWindow;
if (window)
{
int width, height;
_glfwGetWindowSizeX11(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)
{
_glfwSetCursorPosX11(window, width / 2, height / 2);
}
}
XFlush(_glfw.x11.display);
}
void _glfwWaitEventsX11(void)
{
waitForAnyEvent(NULL);
_glfwPollEventsX11();
}
void _glfwWaitEventsTimeoutX11(double timeout)
{
waitForAnyEvent(&timeout);
_glfwPollEventsX11();
}
void _glfwPostEmptyEventX11(void)
{
writeEmptyEvent();
}
void _glfwGetCursorPosX11(_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 _glfwSetCursorPosX11(_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 _glfwSetCursorModeX11(_GLFWwindow* window, int mode)
{
if (_glfwWindowFocusedX11(window))
{
if (mode == GLFW_CURSOR_DISABLED)
{
_glfwGetCursorPosX11(window,
&_glfw.x11.restoreCursorPosX,
&_glfw.x11.restoreCursorPosY);
_glfwCenterCursorInContentArea(window);
if (window->rawMouseMotion)
enableRawMouseMotion(window);
}
else if (_glfw.x11.disabledCursorWindow == window)
{
if (window->rawMouseMotion)
disableRawMouseMotion(window);
}
if (mode == GLFW_CURSOR_DISABLED || mode == GLFW_CURSOR_CAPTURED)
captureCursor(window);
else
releaseCursor();
if (mode == GLFW_CURSOR_DISABLED)
_glfw.x11.disabledCursorWindow = window;
else if (_glfw.x11.disabledCursorWindow == window)
{
_glfw.x11.disabledCursorWindow = NULL;
_glfwSetCursorPosX11(window,
_glfw.x11.restoreCursorPosX,
_glfw.x11.restoreCursorPosY);
}
}
updateCursorImage(window);
XFlush(_glfw.x11.display);
}
const char* _glfwGetScancodeNameX11(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 _glfwGetKeyScancodeX11(int key)
{
return _glfw.x11.scancodes[key];
}
GLFWbool _glfwCreateCursorX11(_GLFWcursor* cursor,
const GLFWimage* image,
int xhot, int yhot)
{
cursor->x11.handle = _glfwCreateNativeCursorX11(image, xhot, yhot);
if (!cursor->x11.handle)
return GLFW_FALSE;
return GLFW_TRUE;
}
GLFWbool _glfwCreateStandardCursorX11(_GLFWcursor* cursor, int shape)
{
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_POINTING_HAND_CURSOR:
name = "pointer";
break;
case GLFW_RESIZE_EW_CURSOR:
name = "ew-resize";
break;
case GLFW_RESIZE_NS_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_POINTING_HAND_CURSOR:
native = XC_hand2;
break;
case GLFW_RESIZE_EW_CURSOR:
native = XC_sb_h_double_arrow;
break;
case GLFW_RESIZE_NS_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 _glfwDestroyCursorX11(_GLFWcursor* cursor)
{
if (cursor->x11.handle)
XFreeCursor(_glfw.x11.display, cursor->x11.handle);
}
void _glfwSetCursorX11(_GLFWwindow* window, _GLFWcursor* cursor)
{
if (window->cursorMode == GLFW_CURSOR_NORMAL ||
window->cursorMode == GLFW_CURSOR_CAPTURED)
{
updateCursorImage(window);
XFlush(_glfw.x11.display);
}
}
void _glfwSetClipboardStringX11(const char* string)
{
char* copy = _glfw_strdup(string);
_glfw_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* _glfwGetClipboardStringX11(void)
{
return getSelectionString(_glfw.x11.CLIPBOARD);
}
EGLenum _glfwGetEGLPlatformX11(EGLint** attribs)
{
if (_glfw.egl.ANGLE_platform_angle)
{
int type = 0;
if (_glfw.egl.ANGLE_platform_angle_opengl)
{
if (_glfw.hints.init.angleType == GLFW_ANGLE_PLATFORM_TYPE_OPENGL)
type = EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE;
}
if (_glfw.egl.ANGLE_platform_angle_vulkan)
{
if (_glfw.hints.init.angleType == GLFW_ANGLE_PLATFORM_TYPE_VULKAN)
type = EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE;
}
if (type)
{
*attribs = _glfw_calloc(5, sizeof(EGLint));
(*attribs)[0] = EGL_PLATFORM_ANGLE_TYPE_ANGLE;
(*attribs)[1] = type;
(*attribs)[2] = EGL_PLATFORM_ANGLE_NATIVE_PLATFORM_TYPE_ANGLE;
(*attribs)[3] = EGL_PLATFORM_X11_EXT;
(*attribs)[4] = EGL_NONE;
return EGL_PLATFORM_ANGLE_ANGLE;
}
}
if (_glfw.egl.EXT_platform_base && _glfw.egl.EXT_platform_x11)
return EGL_PLATFORM_X11_EXT;
return 0;
}
EGLNativeDisplayType _glfwGetEGLNativeDisplayX11(void)
{
return _glfw.x11.display;
}
EGLNativeWindowType _glfwGetEGLNativeWindowX11(_GLFWwindow* window)
{
if (_glfw.egl.platform)
return &window->x11.handle;
else
return (EGLNativeWindowType) window->x11.handle;
}
void _glfwGetRequiredInstanceExtensionsX11(char** extensions)
{
if (!_glfw.vk.KHR_surface)
return;
if (!_glfw.vk.KHR_xcb_surface || !_glfw.x11.x11xcb.handle)
{
if (!_glfw.vk.KHR_xlib_surface)
return;
}
extensions[0] = "VK_KHR_surface";
// NOTE: VK_KHR_xcb_surface is preferred due to some early ICDs exposing but
// not correctly implementing VK_KHR_xlib_surface
if (_glfw.vk.KHR_xcb_surface && _glfw.x11.x11xcb.handle)
extensions[1] = "VK_KHR_xcb_surface";
else
extensions[1] = "VK_KHR_xlib_surface";
}
GLFWbool _glfwGetPhysicalDevicePresentationSupportX11(VkInstance instance,
VkPhysicalDevice device,
uint32_t queuefamily)
{
VisualID visualID = XVisualIDFromVisual(DefaultVisual(_glfw.x11.display,
_glfw.x11.screen));
if (_glfw.vk.KHR_xcb_surface && _glfw.x11.x11xcb.handle)
{
PFN_vkGetPhysicalDeviceXcbPresentationSupportKHR
vkGetPhysicalDeviceXcbPresentationSupportKHR =
(PFN_vkGetPhysicalDeviceXcbPresentationSupportKHR)
vkGetInstanceProcAddr(instance, "vkGetPhysicalDeviceXcbPresentationSupportKHR");
if (!vkGetPhysicalDeviceXcbPresentationSupportKHR)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"X11: Vulkan instance missing VK_KHR_xcb_surface extension");
return GLFW_FALSE;
}
xcb_connection_t* connection = XGetXCBConnection(_glfw.x11.display);
if (!connection)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: Failed to retrieve XCB connection");
return GLFW_FALSE;
}
return vkGetPhysicalDeviceXcbPresentationSupportKHR(device,
queuefamily,
connection,
visualID);
}
else
{
PFN_vkGetPhysicalDeviceXlibPresentationSupportKHR
vkGetPhysicalDeviceXlibPresentationSupportKHR =
(PFN_vkGetPhysicalDeviceXlibPresentationSupportKHR)
vkGetInstanceProcAddr(instance, "vkGetPhysicalDeviceXlibPresentationSupportKHR");
if (!vkGetPhysicalDeviceXlibPresentationSupportKHR)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"X11: Vulkan instance missing VK_KHR_xlib_surface extension");
return GLFW_FALSE;
}
return vkGetPhysicalDeviceXlibPresentationSupportKHR(device,
queuefamily,
_glfw.x11.display,
visualID);
}
}
VkResult _glfwCreateWindowSurfaceX11(VkInstance instance,
_GLFWwindow* window,
const VkAllocationCallbacks* allocator,
VkSurfaceKHR* surface)
{
if (_glfw.vk.KHR_xcb_surface && _glfw.x11.x11xcb.handle)
{
VkResult err;
VkXcbSurfaceCreateInfoKHR sci;
PFN_vkCreateXcbSurfaceKHR vkCreateXcbSurfaceKHR;
xcb_connection_t* connection = XGetXCBConnection(_glfw.x11.display);
if (!connection)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: Failed to retrieve XCB connection");
return VK_ERROR_EXTENSION_NOT_PRESENT;
}
vkCreateXcbSurfaceKHR = (PFN_vkCreateXcbSurfaceKHR)
vkGetInstanceProcAddr(instance, "vkCreateXcbSurfaceKHR");
if (!vkCreateXcbSurfaceKHR)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"X11: Vulkan instance missing VK_KHR_xcb_surface extension");
return VK_ERROR_EXTENSION_NOT_PRESENT;
}
memset(&sci, 0, sizeof(sci));
sci.sType = VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR;
sci.connection = connection;
sci.window = window->x11.handle;
err = vkCreateXcbSurfaceKHR(instance, &sci, allocator, surface);
if (err)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: Failed to create Vulkan XCB surface: %s",
_glfwGetVulkanResultString(err));
}
return err;
}
else
{
VkResult err;
VkXlibSurfaceCreateInfoKHR sci;
PFN_vkCreateXlibSurfaceKHR vkCreateXlibSurfaceKHR;
vkCreateXlibSurfaceKHR = (PFN_vkCreateXlibSurfaceKHR)
vkGetInstanceProcAddr(instance, "vkCreateXlibSurfaceKHR");
if (!vkCreateXlibSurfaceKHR)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"X11: Vulkan instance missing VK_KHR_xlib_surface extension");
return VK_ERROR_EXTENSION_NOT_PRESENT;
}
memset(&sci, 0, sizeof(sci));
sci.sType = VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR;
sci.dpy = _glfw.x11.display;
sci.window = window->x11.handle;
err = vkCreateXlibSurfaceKHR(instance, &sci, allocator, surface);
if (err)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: Failed to create Vulkan X11 surface: %s",
_glfwGetVulkanResultString(err));
}
return err;
}
}
//////////////////////////////////////////////////////////////////////////
////// GLFW native API //////
//////////////////////////////////////////////////////////////////////////
GLFWAPI Display* glfwGetX11Display(void)
{
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (_glfw.platform.platformID != GLFW_PLATFORM_X11)
{
_glfwInputError(GLFW_PLATFORM_UNAVAILABLE, "X11: Platform not initialized");
return NULL;
}
return _glfw.x11.display;
}
GLFWAPI Window glfwGetX11Window(GLFWwindow* handle)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(None);
if (_glfw.platform.platformID != GLFW_PLATFORM_X11)
{
_glfwInputError(GLFW_PLATFORM_UNAVAILABLE, "X11: Platform not initialized");
return None;
}
return window->x11.handle;
}
GLFWAPI void glfwSetX11SelectionString(const char* string)
{
_GLFW_REQUIRE_INIT();
if (_glfw.platform.platformID != GLFW_PLATFORM_X11)
{
_glfwInputError(GLFW_PLATFORM_UNAVAILABLE, "X11: Platform not initialized");
return;
}
_glfw_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);
if (_glfw.platform.platformID != GLFW_PLATFORM_X11)
{
_glfwInputError(GLFW_PLATFORM_UNAVAILABLE, "X11: Platform not initialized");
return NULL;
}
return getSelectionString(_glfw.x11.PRIMARY);
}
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