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bb3cb8f233
glfw/src/x11_window.c
Camilla Berglund bb3cb8f233 Cleanup 
Clean up code and documentation for glfwGetKeyScancode and add
implementation for Wayland and Mir.

Related to #830.
2016-09-07 16:46:48 +02:00

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//========================================================================
// GLFW 3.3 X11 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2016 Camilla Berglund <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.
//
//========================================================================
#include "internal.h"
#include <X11/cursorfont.h>
#include <X11/Xmd.h>
#include <sys/select.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
// Wait for data to arrive using select
// This avoids blocking other threads via the per-display Xlib lock that also
// covers GLX functions
//
static GLFWbool waitForEvent(double* timeout)
{
fd_set fds;
const int fd = ConnectionNumber(_glfw.x11.display);
int count = fd + 1;
FD_ZERO(&fds);
FD_SET(fd, &fds);
#if defined(__linux__)
FD_SET(_glfw.linux_js.inotify, &fds);
if (fd < _glfw.linux_js.inotify)
count = _glfw.linux_js.inotify + 1;
#endif
for (;;)
{
if (timeout)
{
const long seconds = (long) *timeout;
const long microseconds = (long) ((*timeout - seconds) * 1e6);
struct timeval tv = { seconds, microseconds };
const uint64_t base = _glfwPlatformGetTimerValue();
const int result = select(count, &fds, NULL, NULL, &tv);
const int error = errno;
*timeout -= (_glfwPlatformGetTimerValue() - base) /
(double) _glfwPlatformGetTimerFrequency();
if (result > 0)
return GLFW_TRUE;
if ((result == -1 && error == EINTR) || *timeout <= 0.0)
return GLFW_FALSE;
}
else if (select(count, &fds, NULL, NULL, NULL) != -1 || errno != EINTR)
return GLFW_TRUE;
}
}
// 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 (!waitForEvent(&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;
}
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;
}
// Translates a GLFW standard cursor to a font cursor shape
//
static int translateCursorShape(int shape)
{
switch (shape)
{
case GLFW_ARROW_CURSOR:
return XC_left_ptr;
case GLFW_IBEAM_CURSOR:
return XC_xterm;
case GLFW_CROSSHAIR_CURSOR:
return XC_crosshair;
case GLFW_HAND_CURSOR:
return XC_hand1;
case GLFW_HRESIZE_CURSOR:
return XC_sb_h_double_arrow;
case GLFW_VRESIZE_CURSOR:
return XC_sb_v_double_arrow;
}
return 0;
}
// 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;
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.publicKeys[scancode];
}
// Return the GLFW window corresponding to the specified X11 window
//
static _GLFWwindow* findWindowByHandle(Window handle)
{
_GLFWwindow* window;
if (XFindContext(_glfw.x11.display,
handle,
_glfw.x11.context,
(XPointer*) &window) != 0)
{
return NULL;
}
return window;
}
// 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;
memset(&event, 0, sizeof(event));
event.type = 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();
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);
}
// 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
{
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
{
XDeleteProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_BYPASS_COMPOSITOR);
}
}
}
// Splits and translates a text/uri-list into separate file paths
// NOTE: This function destroys the provided string
//
static char** parseUriList(char* text, int* count)
{
const char* prefix = "file://";
char** paths = NULL;
char* line;
*count = 0;
while ((line = strtok(text, "\r\n")))
{
text = NULL;
if (line[0] == '#')
continue;
if (strncmp(line, prefix, strlen(prefix)) == 0)
line += strlen(prefix);
(*count)++;
char* path = calloc(strlen(line) + 1, 1);
paths = realloc(paths, *count * sizeof(char*));
paths[*count - 1] = path;
while (*line)
{
if (line[0] == '%' && line[1] && line[2])
{
const char digits[3] = { line[1], line[2], '\0' };
*path = strtol(digits, NULL, 16);
line += 2;
}
else
*path = *line;
path++;
line++;
}
}
return paths;
}
// Centers the cursor over the window client area
//
static void centerCursor(_GLFWwindow* window)
{
int width, height;
_glfwPlatformGetWindowSize(window, &width, &height);
_glfwPlatformSetCursorPos(window, width / 2.0, height / 2.0);
}
// 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);
}
}
// Create the X11 window (and its colormap)
//
static GLFWbool createNativeWindow(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
Visual* visual, int depth)
{
// Create a colormap based on the visual used by the current context
window->x11.colormap = XCreateColormap(_glfw.x11.display,
_glfw.x11.root,
visual,
AllocNone);
// Create the actual window
{
XSetWindowAttributes wa;
const unsigned long wamask = CWBorderPixel | CWColormap | CWEventMask;
wa.colormap = window->x11.colormap;
wa.border_pixel = 0;
wa.event_mask = StructureNotifyMask | KeyPressMask | KeyReleaseMask |
PointerMotionMask | ButtonPressMask | ButtonReleaseMask |
ExposureMask | FocusChangeMask | VisibilityChangeMask |
EnterWindowMask | LeaveWindowMask | PropertyChangeMask;
_glfwGrabErrorHandlerX11();
window->x11.handle = XCreateWindow(_glfw.x11.display,
_glfw.x11.root,
0, 0,
wndconfig->width, wndconfig->height,
0, // Border width
depth, // Color depth
InputOutput,
visual,
wamask,
&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)
{
struct
{
unsigned long flags;
unsigned long functions;
unsigned long decorations;
long input_mode;
unsigned long status;
} hints;
hints.flags = 2; // Set decorations
hints.decorations = 0; // No decorations
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));
}
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;
}
}
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 pid_t 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, wndconfig->width, wndconfig->height);
// Set ICCCM WM_CLASS property
// HACK: Until a mechanism for specifying the application name is added, the
// initial window title is used as the window class name
if (strlen(wndconfig->title))
{
XClassHint* hint = XAllocClassHint();
hint->res_name = (char*) wndconfig->title;
hint->res_class = (char*) wndconfig->title;
XSetClassHint(_glfw.x11.display, window->x11.handle, hint);
XFree(hint);
}
if (_glfw.x11.XdndAware)
{
// Announce support for Xdnd (drag and drop)
const Atom version = 5;
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);
}
_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;
const Atom formats[] = { _glfw.x11.UTF8_STRING,
_glfw.x11.COMPOUND_STRING,
XA_STRING };
const int formatCount = sizeof(formats) / sizeof(formats[0]);
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,
_glfw.x11.COMPOUND_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*) _glfw.x11.clipboardString,
strlen(_glfw.x11.clipboardString));
}
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*) _glfw.x11.clipboardString,
strlen(_glfw.x11.clipboardString));
return request->property;
}
}
// The requested target is not supported
return None;
}
static void handleSelectionClear(XEvent* event)
{
free(_glfw.x11.clipboardString);
_glfw.x11.clipboardString = NULL;
}
static void handleSelectionRequest(XEvent* event)
{
const XSelectionRequestEvent* request = &event->xselectionrequest;
XEvent reply;
memset(&reply, 0, sizeof(reply));
reply.xselection.property = writeTargetToProperty(request);
reply.xselection.type = SelectionNotify;
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);
}
// Make the specified window and its video mode active on its monitor
//
static GLFWbool acquireMonitor(_GLFWwindow* window)
{
GLFWbool status;
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++;
status = _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);
}
_glfwInputMonitorWindowChange(window->monitor, window);
return status;
}
// Remove the window and restore the original video mode
//
static void releaseMonitor(_GLFWwindow* window)
{
if (window->monitor->window != window)
return;
_glfwInputMonitorWindowChange(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);
}
}
// 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 unsigned int decodeUTF8(const char** s)
{
unsigned int ch = 0, count = 0;
static const unsigned int offsets[] =
{
0x00000000u, 0x00003080u, 0x000e2080u,
0x03c82080u, 0xfa082080u, 0x82082080u
};
do
{
ch = (ch << 6) + (unsigned char) **s;
(*s)++;
count++;
} while ((**s & 0xc0) == 0x80);
assert(count <= 6);
return ch - offsets[count - 1];
}
#endif /*X_HAVE_UTF8_STRING*/
// Process the specified X event
//
static void processEvent(XEvent *event)
{
_GLFWwindow* window = NULL;
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);
_glfwInputMonitorChange();
return;
}
}
if (event->type != GenericEvent)
{
window = findWindowByHandle(event->xany.window);
if (window == NULL)
{
// This is an event for a window that has already been destroyed
return;
}
}
switch (event->type)
{
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: Ignore duplicate key press events generated by ibus
// Corresponding release events are filtered out by the
// GLFW key repeat logic
if (window->x11.lastKeyCode != keycode ||
window->x11.lastKeyTime != event->xkey.time)
{
if (keycode)
_glfwInputKey(window, key, keycode, GLFW_PRESS, mods);
}
window->x11.lastKeyCode = keycode;
window->x11.lastKeyTime = 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 long character = _glfwKeySym2Unicode(keysym);
if (character != -1)
_glfwInputChar(window, character, 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:
{
// 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)
_glfwPlatformSetCursorMode(window, GLFW_CURSOR_HIDDEN);
_glfwInputCursorEnter(window, GLFW_TRUE);
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;
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;
}
if (event->xconfigure.x != window->x11.xpos ||
event->xconfigure.y != window->x11.ypos)
{
if (window->x11.overrideRedirect || event->xany.send_event)
{
_glfwInputWindowPos(window,
event->xconfigure.x,
event->xconfigure.y);
window->x11.xpos = event->xconfigure.x;
window->x11.ypos = event->xconfigure.y;
}
}
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
// TODO: Check if UTF-8 string is supported by the source
}
else if (event->xclient.message_type == _glfw.x11.XdndDrop)
{
// The drag operation has finished dropping on
// the window, ask to convert it to a UTF-8 string
_glfw.x11.xdnd.source = event->xclient.data.l[0];
XConvertSelection(_glfw.x11.display,
_glfw.x11.XdndSelection,
_glfw.x11.UTF8_STRING,
_glfw.x11.XdndSelection,
window->x11.handle, CurrentTime);
}
else if (event->xclient.message_type == _glfw.x11.XdndPosition)
{
// The drag operation has moved over the window
const int absX = (event->xclient.data.l[2] >> 16) & 0xFFFF;
const int absY = (event->xclient.data.l[2]) & 0xFFFF;
int x, y;
_glfwPlatformGetWindowPos(window, &x, &y);
_glfwInputCursorPos(window, absX - x, absY - y);
// Reply that we are ready to copy the dragged data
XEvent reply;
memset(&reply, 0, sizeof(reply));
reply.type = ClientMessage;
reply.xclient.window = event->xclient.data.l[0];
reply.xclient.message_type = _glfw.x11.XdndStatus;
reply.xclient.format = 32;
reply.xclient.data.l[0] = window->x11.handle;
reply.xclient.data.l[1] = 1; // Always accept the dnd with no rectangle
reply.xclient.data.l[2] = 0; // Specify an empty rectangle
reply.xclient.data.l[3] = 0;
reply.xclient.data.l[4] = _glfw.x11.XdndActionCopy;
XSendEvent(_glfw.x11.display, event->xclient.data.l[0],
False, NoEventMask, &reply);
XFlush(_glfw.x11.display);
}
return;
}
case SelectionNotify:
{
if (event->xselection.property)
{
// The converted data from the drag operation has arrived
char* data;
const int result =
_glfwGetWindowPropertyX11(event->xselection.requestor,
event->xselection.property,
event->xselection.target,
(unsigned char**) &data);
if (result)
{
int i, count;
char** paths = parseUriList(data, &count);
_glfwInputDrop(window, count, (const char**) paths);
for (i = 0; i < count; i++)
free(paths[i]);
free(paths);
}
XFree(data);
XEvent reply;
memset(&reply, 0, sizeof(reply));
reply.type = 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;
// Reply that all is well
XSendEvent(_glfw.x11.display, _glfw.x11.xdnd.source,
False, NoEventMask, &reply);
XFlush(_glfw.x11.display);
}
return;
}
case FocusIn:
{
if (window->cursorMode == GLFW_CURSOR_DISABLED)
_glfwPlatformSetCursorMode(window, GLFW_CURSOR_DISABLED);
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->x11.ic)
XSetICFocus(window->x11.ic);
_glfwInputWindowFocus(window, GLFW_TRUE);
return;
}
case FocusOut:
{
if (window->cursorMode == GLFW_CURSOR_DISABLED)
_glfwPlatformSetCursorMode(window, GLFW_CURSOR_NORMAL);
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->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.atom == _glfw.x11.WM_STATE &&
event->xproperty.state == PropertyNewValue)
{
const int state = getWindowState(window);
if (state == IconicState)
{
if (window->monitor)
releaseMonitor(window);
_glfwInputWindowIconify(window, GLFW_TRUE);
}
else if (state == NormalState)
{
if (window->monitor)
acquireMonitor(window);
_glfwInputWindowIconify(window, GLFW_FALSE);
}
}
return;
}
case SelectionClear:
{
handleSelectionClear(event);
return;
}
case SelectionRequest:
{
handleSelectionRequest(event);
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);
if (type != AnyPropertyType && actualType != type)
return 0;
return itemCount;
}
// 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 SelectionClear:
handleSelectionClear(&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;
}
}
}
waitForEvent(NULL);
}
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
int _glfwPlatformCreateWindow(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
const _GLFWctxconfig* ctxconfig,
const _GLFWfbconfig* fbconfig)
{
Visual* visual;
int depth;
if (ctxconfig->client == GLFW_NO_API)
{
visual = DefaultVisual(_glfw.x11.display, _glfw.x11.screen);
depth = DefaultDepth(_glfw.x11.display, _glfw.x11.screen);
}
else
{
if (ctxconfig->source == GLFW_NATIVE_CONTEXT_API)
{
if (!_glfwInitGLX())
return GLFW_FALSE;
if (!_glfwChooseVisualGLX(ctxconfig, fbconfig, &visual, &depth))
return GLFW_FALSE;
}
else
{
if (!_glfwInitEGL())
return GLFW_FALSE;
if (!_glfwChooseVisualEGL(ctxconfig, fbconfig, &visual, &depth))
return GLFW_FALSE;
}
}
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 (!_glfwCreateContextEGL(window, ctxconfig, fbconfig))
return GLFW_FALSE;
}
}
if (window->monitor)
{
_glfwPlatformShowWindow(window);
updateWindowMode(window);
if (!acquireMonitor(window))
return GLFW_FALSE;
centerCursor(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;
long* icon = calloc(longCount, sizeof(long));
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++ = (images[i].pixels[j * 4 + 0] << 16) |
(images[i].pixels[j * 4 + 1] << 8) |
(images[i].pixels[j * 4 + 2] << 0) |
(images[i].pixels[j * 4 + 3] << 24);
}
}
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 (!waitForEvent(&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 _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)
{
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);
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 _glfwPlatformFocusWindow(_GLFWwindow* window)
{
if (_glfw.x11.NET_ACTIVE_WINDOW)
sendEventToWM(window, _glfw.x11.NET_ACTIVE_WINDOW, 1, 0, 0, 0, 0);
else
{
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
{
XMoveResizeWindow(_glfw.x11.display, window->x11.handle,
xpos, ypos, width, height);
}
return;
}
if (window->monitor)
releaseMonitor(window);
_glfwInputWindowMonitorChange(window, monitor);
updateNormalHints(window, width, height);
updateWindowMode(window);
if (window->monitor)
{
XMapRaised(_glfw.x11.display, window->x11.handle);
if (waitForVisibilityNotify(window))
acquireMonitor(window);
}
else
{
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;
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;
}
}
XFree(states);
return maximized;
}
void _glfwPlatformPollEvents(void)
{
_glfwPollJoystickEvents();
int count = XPending(_glfw.x11.display);
while (count--)
{
XEvent event;
XNextEvent(_glfw.x11.display, &event);
processEvent(&event);
}
if (_glfw.x11.disabledCursorWindow)
centerCursor(_glfw.x11.disabledCursorWindow);
XFlush(_glfw.x11.display);
}
void _glfwPlatformWaitEvents(void)
{
while (!XPending(_glfw.x11.display))
waitForEvent(NULL);
_glfwPlatformPollEvents();
}
void _glfwPlatformWaitEventsTimeout(double timeout)
{
while (!XPending(_glfw.x11.display))
{
if (!waitForEvent(&timeout))
break;
}
_glfwPlatformPollEvents();
}
void _glfwPlatformPostEmptyEvent(void)
{
XEvent event;
memset(&event, 0, sizeof(event));
event.type = ClientMessage;
event.xclient.window = _glfw.x11.helperWindowHandle;
event.xclient.format = 32; // Data is 32-bit longs
event.xclient.message_type = _glfw.x11.NULL_;
XSendEvent(_glfw.x11.display, _glfw.x11.helperWindowHandle, False, 0, &event);
XFlush(_glfw.x11.display);
}
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)
{
_glfw.x11.disabledCursorWindow = window;
_glfwPlatformGetCursorPos(window,
&_glfw.x11.restoreCursorPosX,
&_glfw.x11.restoreCursorPosY);
centerCursor(window);
XGrabPointer(_glfw.x11.display, window->x11.handle, True,
ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
GrabModeAsync, GrabModeAsync,
window->x11.handle,
_glfw.x11.hiddenCursorHandle,
CurrentTime);
}
else if (_glfw.x11.disabledCursorWindow == window)
{
_glfw.x11.disabledCursorWindow = NULL;
XUngrabPointer(_glfw.x11.display, CurrentTime);
_glfwPlatformSetCursorPos(window,
_glfw.x11.restoreCursorPosX,
_glfw.x11.restoreCursorPosY);
}
updateCursorImage(window);
XFlush(_glfw.x11.display);
}
const char* _glfwPlatformGetKeyName(int key, int scancode)
{
KeySym keysym;
int extra;
if (!_glfw.x11.xkb.available)
return NULL;
if (key != GLFW_KEY_UNKNOWN)
scancode = _glfw.x11.nativeKeys[key];
if (!_glfwIsPrintable(_glfw.x11.publicKeys[scancode]))
return NULL;
keysym = XkbKeycodeToKeysym(_glfw.x11.display, scancode, 0, 0);
if (keysym == NoSymbol)
return NULL;
XkbTranslateKeySym(_glfw.x11.display, &keysym, 0,
_glfw.x11.keyName, sizeof(_glfw.x11.keyName),
&extra);
if (!strlen(_glfw.x11.keyName))
return NULL;
return _glfw.x11.keyName;
}
int _glfwPlatformGetKeyScancode(int key)
{
return _glfw.x11.nativeKeys[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)
{
cursor->x11.handle = XCreateFontCursor(_glfw.x11.display,
translateCursorShape(shape));
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(_GLFWwindow* window, const char* string)
{
free(_glfw.x11.clipboardString);
_glfw.x11.clipboardString = strdup(string);
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(_GLFWwindow* window)
{
size_t i;
const Atom formats[] = { _glfw.x11.UTF8_STRING,
_glfw.x11.COMPOUND_STRING,
XA_STRING };
const size_t formatCount = sizeof(formats) / sizeof(formats[0]);
if (XGetSelectionOwner(_glfw.x11.display, _glfw.x11.CLIPBOARD) ==
_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 _glfw.x11.clipboardString;
}
free(_glfw.x11.clipboardString);
_glfw.x11.clipboardString = NULL;
for (i = 0; i < formatCount; i++)
{
char* data;
XEvent event;
XConvertSelection(_glfw.x11.display,
_glfw.x11.CLIPBOARD,
formats[i],
_glfw.x11.GLFW_SELECTION,
_glfw.x11.helperWindowHandle,
CurrentTime);
while (!XCheckTypedWindowEvent(_glfw.x11.display,
_glfw.x11.helperWindowHandle,
SelectionNotify,
&event))
{
waitForEvent(NULL);
}
if (event.xselection.property == None)
continue;
if (_glfwGetWindowPropertyX11(event.xselection.requestor,
event.xselection.property,
event.xselection.target,
(unsigned char**) &data))
{
_glfw.x11.clipboardString = strdup(data);
}
XFree(data);
XDeleteProperty(_glfw.x11.display,
event.xselection.requestor,
event.xselection.property);
if (_glfw.x11.clipboardString)
break;
}
if (_glfw.x11.clipboardString == NULL)
{
_glfwInputError(GLFW_FORMAT_UNAVAILABLE,
"X11: Failed to convert clipboard to string");
}
return _glfw.x11.clipboardString;
}
void _glfwPlatformGetRequiredInstanceExtensions(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";
if (_glfw.vk.KHR_xcb_surface && _glfw.x11.x11xcb.handle)
extensions[1] = "VK_KHR_xcb_surface";
else
extensions[1] = "VK_KHR_xlib_surface";
}
int _glfwPlatformGetPhysicalDevicePresentationSupport(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 =
_glfw.x11.x11xcb.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 _glfwPlatformCreateWindowSurface(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 =
_glfw.x11.x11xcb.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);
return _glfw.x11.display;
}
GLFWAPI Window glfwGetX11Window(GLFWwindow* handle)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(None);
return window->x11.handle;
}
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