glfw/src/x11_window.c
2014-01-21 15:25:49 +01:00

1327 lines
42 KiB
C

//========================================================================
// GLFW 3.0 X11 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.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 <sys/select.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <limits.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
typedef struct
{
unsigned long flags;
unsigned long functions;
unsigned long decorations;
long input_mode;
unsigned long status;
} MotifWmHints;
#define MWM_HINTS_DECORATIONS (1L << 1)
// 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 X Window key to internal coding
//
static int translateKey(int keycode)
{
// Use the pre-filled LUT (see updateKeyCodeLUT() in x11_init.c)
if ((keycode >= 0) && (keycode < 256))
return _glfw.x11.keyCodeLUT[keycode];
return GLFW_KEY_UNKNOWN;
}
// Translates an X Window event to Unicode
//
static int translateChar(XKeyEvent* event)
{
KeySym keysym;
// Get X11 keysym
XLookupString(event, NULL, 0, &keysym, NULL);
// Convert to Unicode (see x11_unicode.c)
return (int) _glfwKeySym2Unicode(keysym);
}
// Create the X11 window (and its colormap)
//
static GLboolean createWindow(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig)
{
unsigned long wamask;
XSetWindowAttributes wa;
XVisualInfo* visual = _GLFW_X11_CONTEXT_VISUAL;
// Every window needs a colormap
// Create one based on the visual used by the current context
// TODO: Decouple this from context creation
window->x11.colormap = XCreateColormap(_glfw.x11.display,
_glfw.x11.root,
visual->visual,
AllocNone);
// Create the actual window
{
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;
if (wndconfig->monitor == NULL)
{
// HACK: This is a workaround for windows without a background pixel
// not getting any decorations on certain older versions of
// Compiz running on Intel hardware
wa.background_pixel = BlackPixel(_glfw.x11.display,
_glfw.x11.screen);
wamask |= CWBackPixel;
}
_glfwGrabXErrorHandler();
window->x11.handle = XCreateWindow(_glfw.x11.display,
_glfw.x11.root,
0, 0,
wndconfig->width, wndconfig->height,
0, // Border width
visual->depth, // Color depth
InputOutput,
visual->visual,
wamask,
&wa);
_glfwReleaseXErrorHandler();
if (!window->x11.handle)
{
_glfwInputXError(GLFW_PLATFORM_ERROR,
"X11: Failed to create window");
return GL_FALSE;
}
if (!wndconfig->decorated)
{
MotifWmHints hints;
hints.flags = MWM_HINTS_DECORATIONS;
hints.decorations = 0;
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.MOTIF_WM_HINTS,
_glfw.x11.MOTIF_WM_HINTS, 32,
PropModeReplace,
(unsigned char*) &hints,
sizeof(MotifWmHints) / sizeof(long));
}
XSaveContext(_glfw.x11.display,
window->x11.handle,
_glfw.x11.context,
(XPointer) window);
}
if (window->monitor && !_glfw.x11.hasEWMH)
{
// 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 fullscreen 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 = GL_TRUE;
}
// Declare the WM protocols supported by GLFW
{
int count = 0;
Atom protocols[2];
// The WM_DELETE_WINDOW ICCCM protocol
// Basic window close notification protocol
if (_glfw.x11.WM_DELETE_WINDOW)
protocols[count++] = _glfw.x11.WM_DELETE_WINDOW;
// The _NET_WM_PING EWMH protocol
// Tells the WM to ping the GLFW window and flag the application as
// unresponsive if the WM doesn't get a reply within a few seconds
if (_glfw.x11.NET_WM_PING)
protocols[count++] = _glfw.x11.NET_WM_PING;
if (count > 0)
{
XSetWMProtocols(_glfw.x11.display, window->x11.handle,
protocols, count);
}
}
if (_glfw.x11.NET_WM_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);
}
// Set ICCCM WM_HINTS property
{
XWMHints* hints = XAllocWMHints();
if (!hints)
{
_glfwInputError(GLFW_OUT_OF_MEMORY,
"X11: Failed to allocate WM hints");
return GL_FALSE;
}
hints->flags = StateHint;
hints->initial_state = NormalState;
XSetWMHints(_glfw.x11.display, window->x11.handle, hints);
XFree(hints);
}
// Set ICCCM WM_NORMAL_HINTS property (even if no parts are set)
{
XSizeHints* hints = XAllocSizeHints();
hints->flags = 0;
if (wndconfig->monitor)
{
hints->flags |= PPosition;
_glfwPlatformGetMonitorPos(wndconfig->monitor, &hints->x, &hints->y);
}
else
{
// HACK: Explicitly setting PPosition to any value causes some WMs,
// notably Compiz and Metacity, to honor the position of
// unmapped windows set by XMoveWindow
hints->flags |= PPosition;
hints->x = hints->y = 0;
}
if (!wndconfig->resizable)
{
hints->flags |= (PMinSize | PMaxSize);
hints->min_width = hints->max_width = wndconfig->width;
hints->min_height = hints->max_height = wndconfig->height;
}
XSetWMNormalHints(_glfw.x11.display, window->x11.handle, hints);
XFree(hints);
}
// 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.xi.available)
{
// Select for XInput2 events
XIEventMask eventmask;
unsigned char mask[] = { 0 };
eventmask.deviceid = 2;
eventmask.mask_len = sizeof(mask);
eventmask.mask = mask;
XISetMask(mask, XI_Motion);
XISelectEvents(_glfw.x11.display, window->x11.handle, &eventmask, 1);
}
if (_glfw.x11.XdndAware)
{
// Announce support for XDND version 5 and below
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);
XRRSelectInput(_glfw.x11.display, window->x11.handle,
RRScreenChangeNotifyMask);
_glfwPlatformGetWindowPos(window, &window->x11.xpos, &window->x11.ypos);
_glfwPlatformGetWindowSize(window, &window->x11.width, &window->x11.height);
return GL_TRUE;
}
// Hide the mouse cursor
//
static void hideCursor(_GLFWwindow* window)
{
XUngrabPointer(_glfw.x11.display, CurrentTime);
XDefineCursor(_glfw.x11.display, window->x11.handle, _glfw.x11.cursor);
}
// Disable the mouse cursor
//
static void disableCursor(_GLFWwindow* window)
{
XGrabPointer(_glfw.x11.display, window->x11.handle, True,
ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
GrabModeAsync, GrabModeAsync,
window->x11.handle, _glfw.x11.cursor, CurrentTime);
}
// Restores the mouse cursor
//
static void restoreCursor(_GLFWwindow* window)
{
XUngrabPointer(_glfw.x11.display, CurrentTime);
XUndefineCursor(_glfw.x11.display, window->x11.handle);
}
// Enter fullscreen mode
//
static void enterFullscreenMode(_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);
}
_glfw.x11.saver.count++;
_glfwSetVideoMode(window->monitor, &window->videoMode);
if (_glfw.x11.NET_WM_BYPASS_COMPOSITOR)
{
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);
}
if (_glfw.x11.NET_WM_STATE && _glfw.x11.NET_WM_STATE_FULLSCREEN)
{
int x, y;
_glfwPlatformGetMonitorPos(window->monitor, &x, &y);
_glfwPlatformSetWindowPos(window, x, y);
if (_glfw.x11.NET_ACTIVE_WINDOW)
{
// Ask the window manager to raise and focus the GLFW window
// Only focused windows with the _NET_WM_STATE_FULLSCREEN state end
// up on top of all other windows ("Stacking order" in EWMH spec)
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 = _glfw.x11.NET_ACTIVE_WINDOW;
event.xclient.data.l[0] = 1; // Sender is a normal application
event.xclient.data.l[1] = 0; // We don't really know the timestamp
XSendEvent(_glfw.x11.display,
_glfw.x11.root,
False,
SubstructureNotifyMask | SubstructureRedirectMask,
&event);
}
// Ask the window manager to make the GLFW window a fullscreen window
// Fullscreen windows are undecorated and, when focused, are kept
// on top of all other windows
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 = _glfw.x11.NET_WM_STATE;
event.xclient.data.l[0] = _NET_WM_STATE_ADD;
event.xclient.data.l[1] = _glfw.x11.NET_WM_STATE_FULLSCREEN;
event.xclient.data.l[2] = 0; // No secondary property
event.xclient.data.l[3] = 1; // Sender is a normal application
XSendEvent(_glfw.x11.display,
_glfw.x11.root,
False,
SubstructureNotifyMask | SubstructureRedirectMask,
&event);
}
else if (window->x11.overrideRedirect)
{
// In override-redirect mode we have divorced ourselves from the
// window manager, so we need to do everything manually
GLFWvidmode mode;
_glfwPlatformGetVideoMode(window->monitor, &mode);
XRaiseWindow(_glfw.x11.display, window->x11.handle);
XSetInputFocus(_glfw.x11.display, window->x11.handle,
RevertToParent, CurrentTime);
XMoveWindow(_glfw.x11.display, window->x11.handle, 0, 0);
XResizeWindow(_glfw.x11.display, window->x11.handle,
mode.width, mode.height);
}
}
// Leave fullscreen mode
//
static void leaveFullscreenMode(_GLFWwindow* window)
{
_glfwRestoreVideoMode(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);
}
if (_glfw.x11.NET_WM_BYPASS_COMPOSITOR)
{
const unsigned long value = 0;
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_BYPASS_COMPOSITOR, XA_CARDINAL, 32,
PropModeReplace, (unsigned char*) &value, 1);
}
if (_glfw.x11.NET_WM_STATE && _glfw.x11.NET_WM_STATE_FULLSCREEN)
{
// Ask the window manager to make the GLFW window a normal window
// Normal windows usually have frames and other decorations
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 = _glfw.x11.NET_WM_STATE;
event.xclient.data.l[0] = _NET_WM_STATE_REMOVE;
event.xclient.data.l[1] = _glfw.x11.NET_WM_STATE_FULLSCREEN;
event.xclient.data.l[2] = 0; // No secondary property
event.xclient.data.l[3] = 1; // Sender is a normal application
XSendEvent(_glfw.x11.display,
_glfw.x11.root,
False,
SubstructureNotifyMask | SubstructureRedirectMask,
&event);
}
}
// Process the specified X event
//
static void processEvent(XEvent *event)
{
_GLFWwindow* window = NULL;
if (event->type != GenericEvent)
{
window = _glfwFindWindowByHandle(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(event->xkey.keycode);
const int mods = translateState(event->xkey.state);
const int character = translateChar(&event->xkey);
_glfwInputKey(window, key, event->xkey.keycode, GLFW_PRESS, mods);
if (character != -1)
_glfwInputChar(window, character);
break;
}
case KeyRelease:
{
const int key = translateKey(event->xkey.keycode);
const int mods = translateState(event->xkey.state);
_glfwInputKey(window, key, event->xkey.keycode, GLFW_RELEASE, mods);
break;
}
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 - 4,
GLFW_PRESS,
mods);
}
break;
}
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 - 4,
GLFW_RELEASE,
mods);
}
break;
}
case EnterNotify:
{
_glfwInputCursorEnter(window, GL_TRUE);
break;
}
case LeaveNotify:
{
_glfwInputCursorEnter(window, GL_FALSE);
break;
}
case MotionNotify:
{
if (event->xmotion.x != window->x11.warpPosX ||
event->xmotion.y != window->x11.warpPosY)
{
// The cursor was moved by something other than GLFW
int x, y;
if (window->cursorMode == GLFW_CURSOR_DISABLED)
{
if (_glfw.focusedWindow != window)
break;
x = event->xmotion.x - window->x11.cursorPosX;
y = event->xmotion.y - window->x11.cursorPosY;
}
else
{
x = event->xmotion.x;
y = event->xmotion.y;
}
_glfwInputCursorMotion(window, x, y);
}
window->x11.cursorPosX = event->xmotion.x;
window->x11.cursorPosY = event->xmotion.y;
break;
}
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)
{
_glfwInputWindowPos(window,
event->xconfigure.x,
event->xconfigure.y);
window->x11.xpos = event->xconfigure.x;
window->x11.ypos = event->xconfigure.y;
}
break;
}
case ClientMessage:
{
// Custom client message, probably from the window manager
if ((Atom) event->xclient.data.l[0] == _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 (_glfw.x11.NET_WM_PING &&
(Atom) event->xclient.data.l[0] == _glfw.x11.NET_WM_PING)
{
// The window manager is pinging the application to ensure it's
// still responding to events
event->xclient.window = _glfw.x11.root;
XSendEvent(_glfw.x11.display,
event->xclient.window,
False,
SubstructureNotifyMask | SubstructureRedirectMask,
event);
}
else if (event->xclient.message_type == _glfw.x11.XdndEnter)
{
// Xdnd Enter: the drag&drop event has started in the window, we
// could be getting the type and possible conversions here but
// since we use always string conversion we don't need it
}
else if (event->xclient.message_type == _glfw.x11.XdndDrop)
{
// Xdnd Drop: The drag&drop event has finished dropping on
// the window, ask to convert the selection
_glfw.x11.xdnd.sourceWindow = 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.XdndLeave)
{
}
else if (event->xclient.message_type == _glfw.x11.XdndPosition)
{
// Xdnd Position: get coordinates of the mouse inside the window
// and update the mouse position
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);
_glfwInputCursorMotion(window, absX - x, absY - y);
// Xdnd: reply with an XDND status message
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; // We only accept copying
XSendEvent(_glfw.x11.display, window->x11.handle,
False, NoEventMask, &reply);
XFlush(_glfw.x11.display);
}
break;
}
case SelectionNotify:
{
if (event->xselection.property != None)
{
// Xdnd: got a selection notification from the conversion
// we asked for, get the data and finish the d&d event
char* data;
free(_glfw.x11.xdnd.string);
_glfw.x11.xdnd.string = NULL;
const int result = _glfwGetWindowProperty(event->xselection.requestor,
event->xselection.property,
event->xselection.target,
(unsigned char**) &data);
if (result)
{
// Nautilus seems to add a \r at the end of the paths
// remove it so paths can be directly used
_glfw.x11.xdnd.string = malloc(strlen(data) + 1);
char *to = _glfw.x11.xdnd.string;
const char *from = data;
const char *current = strchr(from, '\r');
while (current)
{
const int charsToCopy = current - from;
memcpy(to, from, (size_t) charsToCopy);
to += charsToCopy;
from = current + 1;
current = strchr(from, '\r');
}
const size_t remaining = strlen(from);
memcpy(to, from, remaining);
to += remaining;
*to = 0;
}
XEvent reply;
memset(&reply, 0, sizeof(reply));
reply.type = ClientMessage;
reply.xclient.window = _glfw.x11.xdnd.sourceWindow;
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; // We only ever copy
// Reply that all is well
XSendEvent(_glfw.x11.display, _glfw.x11.xdnd.sourceWindow,
False, NoEventMask, &reply);
XSync(_glfw.x11.display, False);
XFree(data);
if (result)
_glfwInputDrop(window, _glfw.x11.xdnd.string);
}
break;
}
case MapNotify:
{
_glfwInputWindowVisibility(window, GL_TRUE);
break;
}
case UnmapNotify:
{
_glfwInputWindowVisibility(window, GL_FALSE);
break;
}
case FocusIn:
{
_glfwInputWindowFocus(window, GL_TRUE);
if (window->cursorMode == GLFW_CURSOR_DISABLED)
disableCursor(window);
break;
}
case FocusOut:
{
_glfwInputWindowFocus(window, GL_FALSE);
if (window->cursorMode == GLFW_CURSOR_DISABLED)
restoreCursor(window);
break;
}
case Expose:
{
_glfwInputWindowDamage(window);
break;
}
case PropertyNotify:
{
if (event->xproperty.atom == _glfw.x11.WM_STATE &&
event->xproperty.state == PropertyNewValue)
{
struct {
CARD32 state;
Window icon;
} *state = NULL;
if (_glfwGetWindowProperty(window->x11.handle,
_glfw.x11.WM_STATE,
_glfw.x11.WM_STATE,
(unsigned char**) &state) >= 2)
{
if (state->state == IconicState)
_glfwInputWindowIconify(window, GL_TRUE);
else if (state->state == NormalState)
_glfwInputWindowIconify(window, GL_FALSE);
}
XFree(state);
}
break;
}
case SelectionClear:
{
_glfwHandleSelectionClear(event);
break;
}
case SelectionRequest:
{
_glfwHandleSelectionRequest(event);
break;
}
case DestroyNotify:
return;
case GenericEvent:
{
if (event->xcookie.extension == _glfw.x11.xi.majorOpcode &&
XGetEventData(_glfw.x11.display, &event->xcookie))
{
if (event->xcookie.evtype == XI_Motion)
{
XIDeviceEvent* data = (XIDeviceEvent*) event->xcookie.data;
window = _glfwFindWindowByHandle(data->event);
if (window)
{
if (data->event_x != window->x11.warpPosX ||
data->event_y != window->x11.warpPosY)
{
// The cursor was moved by something other than GLFW
double x, y;
if (window->cursorMode == GLFW_CURSOR_DISABLED)
{
if (_glfw.focusedWindow != window)
break;
x = data->event_x - window->x11.cursorPosX;
y = data->event_y - window->x11.cursorPosY;
}
else
{
x = data->event_x;
y = data->event_y;
}
_glfwInputCursorMotion(window, x, y);
}
window->x11.cursorPosX = data->event_x;
window->x11.cursorPosY = data->event_y;
}
}
}
XFreeEventData(_glfw.x11.display, &event->xcookie);
break;
}
default:
{
switch (event->type - _glfw.x11.randr.eventBase)
{
case RRScreenChangeNotify:
{
XRRUpdateConfiguration(event);
break;
}
}
break;
}
}
}
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
// Return the GLFW window corresponding to the specified X11 window
//
_GLFWwindow* _glfwFindWindowByHandle(Window handle)
{
_GLFWwindow* window;
if (XFindContext(_glfw.x11.display,
handle,
_glfw.x11.context,
(XPointer*) &window) != 0)
{
return NULL;
}
return window;
}
// Retrieve a single window property of the specified type
// Inspired by fghGetWindowProperty from freeglut
//
unsigned long _glfwGetWindowProperty(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;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
int _glfwPlatformCreateWindow(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
const _GLFWfbconfig* fbconfig)
{
if (!_glfwCreateContext(window, wndconfig, fbconfig))
return GL_FALSE;
if (!createWindow(window, wndconfig))
return GL_FALSE;
if (wndconfig->monitor)
{
_glfwPlatformShowWindow(window);
enterFullscreenMode(window);
}
return GL_TRUE;
}
void _glfwPlatformDestroyWindow(_GLFWwindow* window)
{
if (window->monitor)
leaveFullscreenMode(window);
_glfwDestroyContext(window);
if (window->x11.handle)
{
if (window->x11.handle ==
XGetSelectionOwner(_glfw.x11.display, _glfw.x11.CLIPBOARD))
{
_glfwPushSelectionToManager(window);
}
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;
}
}
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
if (_glfw.x11.NET_WM_NAME)
{
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_NAME, _glfw.x11.UTF8_STRING, 8,
PropModeReplace,
(unsigned char*) title, strlen(title));
}
if (_glfw.x11.NET_WM_ICON_NAME)
{
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_ICON_NAME, _glfw.x11.UTF8_STRING, 8,
PropModeReplace,
(unsigned char*) title, strlen(title));
}
}
void _glfwPlatformGetWindowPos(_GLFWwindow* window, int* xpos, int* ypos)
{
Window child;
int x, y;
XTranslateCoordinates(_glfw.x11.display, window->x11.handle, _glfw.x11.root,
0, 0, &x, &y, &child);
if (child)
{
int left, top;
XTranslateCoordinates(_glfw.x11.display, window->x11.handle, child,
0, 0, &left, &top, &child);
x -= left;
y -= top;
}
if (xpos)
*xpos = x;
if (ypos)
*ypos = y;
}
void _glfwPlatformSetWindowPos(_GLFWwindow* window, int xpos, int ypos)
{
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)
{
_glfwSetVideoMode(window->monitor, &window->videoMode);
if (window->x11.overrideRedirect)
{
GLFWvidmode mode;
_glfwPlatformGetVideoMode(window->monitor, &mode);
XResizeWindow(_glfw.x11.display, window->x11.handle,
mode.width, mode.height);
}
}
else
{
if (!window->resizable)
{
// Update window size restrictions to match new window size
XSizeHints* hints = XAllocSizeHints();
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);
}
XResizeWindow(_glfw.x11.display, window->x11.handle, width, height);
}
XFlush(_glfw.x11.display);
}
void _glfwPlatformGetFramebufferSize(_GLFWwindow* window, int* width, int* height)
{
_glfwPlatformGetWindowSize(window, width, height);
}
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_API_UNAVAILABLE,
"X11: Iconification of full screen windows requires "
"a WM that supports EWMH");
return;
}
XIconifyWindow(_glfw.x11.display, window->x11.handle, _glfw.x11.screen);
}
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_API_UNAVAILABLE,
"X11: Iconification of full screen windows requires "
"a WM that supports EWMH");
return;
}
XMapWindow(_glfw.x11.display, window->x11.handle);
}
void _glfwPlatformShowWindow(_GLFWwindow* window)
{
XMapRaised(_glfw.x11.display, window->x11.handle);
XFlush(_glfw.x11.display);
}
void _glfwPlatformHideWindow(_GLFWwindow* window)
{
XUnmapWindow(_glfw.x11.display, window->x11.handle);
XFlush(_glfw.x11.display);
}
void _glfwPlatformPollEvents(void)
{
int count = XPending(_glfw.x11.display);
while (count--)
{
XEvent event;
XNextEvent(_glfw.x11.display, &event);
processEvent(&event);
}
_GLFWwindow* window = _glfw.focusedWindow;
if (window && window->cursorMode == GLFW_CURSOR_DISABLED)
{
int width, height;
_glfwPlatformGetWindowSize(window, &width, &height);
_glfwPlatformSetCursorPos(window, width / 2, height / 2);
}
}
void _glfwPlatformWaitEvents(void)
{
if (!XPending(_glfw.x11.display))
{
fd_set fds;
const int fd = ConnectionNumber(_glfw.x11.display);
FD_ZERO(&fds);
FD_SET(fd, &fds);
// select(1) is used instead of an X function like XNextEvent, as the
// wait inside those are guarded by the mutex protecting the display
// struct, locking out other threads from using X (including GLX)
if (select(fd + 1, &fds, NULL, NULL, NULL) < 0)
return;
}
_glfwPlatformPollEvents();
}
void _glfwPlatformSetCursorPos(_GLFWwindow* window, double x, double y)
{
// Store the new position so it can be recognized later
window->x11.warpPosX = (int) x;
window->x11.warpPosY = (int) y;
XWarpPointer(_glfw.x11.display, None, window->x11.handle,
0,0,0,0, (int) x, (int) y);
}
void _glfwPlatformApplyCursorMode(_GLFWwindow* window)
{
switch (window->cursorMode)
{
case GLFW_CURSOR_NORMAL:
restoreCursor(window);
break;
case GLFW_CURSOR_HIDDEN:
hideCursor(window);
break;
case GLFW_CURSOR_DISABLED:
disableCursor(window);
break;
}
}
//////////////////////////////////////////////////////////////////////////
////// 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;
}