GLFW-b-0.0.1: glfw/lib/x11/x11_window.c
//========================================================================
// GLFW - An OpenGL framework
// File: x11_window.c
// Platform: X11 (Unix)
// API version: 2.7
// WWW: http://glfw.sourceforge.net
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Camilla Berglund
//
// 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"
/* KDE decoration values */
enum {
KDE_noDecoration = 0,
KDE_normalDecoration = 1,
KDE_tinyDecoration = 2,
KDE_noFocus = 256,
KDE_standaloneMenuBar = 512,
KDE_desktopIcon = 1024 ,
KDE_staysOnTop = 2048
};
/* Define GLX 1.4 FSAA tokens if not already defined */
#ifndef GLX_VERSION_1_4
#define GLX_SAMPLE_BUFFERS 100000
#define GLX_SAMPLES 100001
#endif /*GLX_VERSION_1_4*/
//************************************************************************
//**** GLFW internal functions ****
//************************************************************************
//========================================================================
// Checks whether the event is a MapNotify for the specified window
//========================================================================
static Bool isMapNotify( Display *d, XEvent *e, char *arg )
{
return (e->type == MapNotify) && (e->xmap.window == (Window)arg);
}
//========================================================================
// Turn off window decorations
// Based on xawdecode: src/wmhooks.c
//========================================================================
#define MWM_HINTS_DECORATIONS (1L << 1)
static void disableDecorations( void )
{
GLboolean removedDecorations;
Atom hintAtom;
XSetWindowAttributes attributes;
removedDecorations = GL_FALSE;
// First try to set MWM hints
hintAtom = XInternAtom( _glfwLibrary.display, "_MOTIF_WM_HINTS", True );
if ( hintAtom != None )
{
struct {
unsigned long flags;
unsigned long functions;
unsigned long decorations;
long input_mode;
unsigned long status;
} MWMHints = { MWM_HINTS_DECORATIONS, 0, 0, 0, 0 };
XChangeProperty( _glfwLibrary.display, _glfwWin.window, hintAtom, hintAtom,
32, PropModeReplace, (unsigned char *)&MWMHints,
sizeof(MWMHints) / 4 );
removedDecorations = GL_TRUE;
}
// Now try to set KWM hints
hintAtom = XInternAtom( _glfwLibrary.display, "KWM_WIN_DECORATION", True );
if ( hintAtom != None )
{
long KWMHints = KDE_tinyDecoration;
XChangeProperty( _glfwLibrary.display, _glfwWin.window, hintAtom, hintAtom,
32, PropModeReplace, (unsigned char *)&KWMHints,
sizeof(KWMHints) / 4 );
removedDecorations = GL_TRUE;
}
// Now try to set GNOME hints
hintAtom = XInternAtom( _glfwLibrary.display, "_WIN_HINTS", True );
if ( hintAtom != None )
{
long GNOMEHints = 0;
XChangeProperty( _glfwLibrary.display, _glfwWin.window, hintAtom, hintAtom,
32, PropModeReplace, (unsigned char *)&GNOMEHints,
sizeof(GNOMEHints) / 4 );
removedDecorations = GL_TRUE;
}
// Now try to set KDE NET_WM hints
hintAtom = XInternAtom( _glfwLibrary.display, "_NET_WM_WINDOW_TYPE", True );
if ( hintAtom != None )
{
Atom NET_WMHints[2];
NET_WMHints[0] = XInternAtom( _glfwLibrary.display,
"_KDE_NET_WM_WINDOW_TYPE_OVERRIDE",
True );
/* define a fallback... */
NET_WMHints[1] = XInternAtom( _glfwLibrary.display,
"_NET_WM_WINDOW_TYPE_NORMAL",
True );
XChangeProperty( _glfwLibrary.display, _glfwWin.window, hintAtom, XA_ATOM,
32, PropModeReplace, (unsigned char *)&NET_WMHints,
2 );
removedDecorations = GL_TRUE;
}
// Set ICCCM fullscreen WM hint
hintAtom = XInternAtom( _glfwLibrary.display, "_NET_WM_STATE", True );
if ( hintAtom != None )
{
Atom NET_WMHints[1];
NET_WMHints[0] = XInternAtom( _glfwLibrary.display,
"_NET_WM_STATE_FULLSCREEN",
True );
XChangeProperty( _glfwLibrary.display, _glfwWin.window, hintAtom, XA_ATOM,
32, PropModeReplace, (unsigned char *)&NET_WMHints, 1 );
}
// Did we sucessfully remove the window decorations?
if( removedDecorations )
{
// Finally set the transient hints
XSetTransientForHint( _glfwLibrary.display,
_glfwWin.window,
RootWindow( _glfwLibrary.display, _glfwWin.screen) );
XUnmapWindow( _glfwLibrary.display, _glfwWin.window );
XMapWindow( _glfwLibrary.display, _glfwWin.window );
}
else
{
// The Butcher way of removing window decorations
attributes.override_redirect = True;
XChangeWindowAttributes( _glfwLibrary.display,
_glfwWin.window,
CWOverrideRedirect,
&attributes );
_glfwWin.overrideRedirect = GL_TRUE;
}
}
//========================================================================
// Turn on window decorations
//========================================================================
static void enableDecorations( void )
{
GLboolean activatedDecorations;
Atom hintAtom;
// If this is an override redirect window, skip it...
if( _glfwWin.overrideRedirect )
{
return;
}
activatedDecorations = 0;
// First try to unset MWM hints
hintAtom = XInternAtom( _glfwLibrary.display, "_MOTIF_WM_HINTS", True );
if ( hintAtom != None )
{
XDeleteProperty( _glfwLibrary.display, _glfwWin.window, hintAtom );
activatedDecorations = GL_TRUE;
}
// Now try to unset KWM hints
hintAtom = XInternAtom( _glfwLibrary.display, "KWM_WIN_DECORATION", True );
if ( hintAtom != None )
{
XDeleteProperty( _glfwLibrary.display, _glfwWin.window, hintAtom );
activatedDecorations = GL_TRUE;
}
// Now try to unset GNOME hints
hintAtom = XInternAtom( _glfwLibrary.display, "_WIN_HINTS", True );
if ( hintAtom != None )
{
XDeleteProperty( _glfwLibrary.display, _glfwWin.window, hintAtom );
activatedDecorations = GL_TRUE;
}
// Now try to unset NET_WM hints
hintAtom = XInternAtom( _glfwLibrary.display, "_NET_WM_WINDOW_TYPE", True );
if ( hintAtom != None )
{
Atom NET_WMHints = XInternAtom( _glfwLibrary.display,
"_NET_WM_WINDOW_TYPE_NORMAL",
True);
if( NET_WMHints != None )
{
XChangeProperty( _glfwLibrary.display, _glfwWin.window,
hintAtom, XA_ATOM, 32, PropModeReplace,
(unsigned char *)&NET_WMHints, 1 );
activatedDecorations = GL_TRUE;
}
}
// Finally unset the transient hints if necessary
if( activatedDecorations )
{
// NOTE: Does this work?
XSetTransientForHint( _glfwLibrary.display, _glfwWin.window, None );
XUnmapWindow( _glfwLibrary.display, _glfwWin.window );
XMapWindow( _glfwLibrary.display, _glfwWin.window );
}
}
//========================================================================
// Translates an X Window key to internal coding
//========================================================================
static int translateKey( int keycode )
{
KeySym key, key_lc, key_uc;
// Try secondary keysym, for numeric keypad keys
// Note: This way we always force "NumLock = ON", which at least
// enables GLFW users to detect numeric keypad keys
key = XKeycodeToKeysym( _glfwLibrary.display, keycode, 1 );
switch( key )
{
// Numeric keypad
case XK_KP_0: return GLFW_KEY_KP_0;
case XK_KP_1: return GLFW_KEY_KP_1;
case XK_KP_2: return GLFW_KEY_KP_2;
case XK_KP_3: return GLFW_KEY_KP_3;
case XK_KP_4: return GLFW_KEY_KP_4;
case XK_KP_5: return GLFW_KEY_KP_5;
case XK_KP_6: return GLFW_KEY_KP_6;
case XK_KP_7: return GLFW_KEY_KP_7;
case XK_KP_8: return GLFW_KEY_KP_8;
case XK_KP_9: return GLFW_KEY_KP_9;
case XK_KP_Separator:
case XK_KP_Decimal: return GLFW_KEY_KP_DECIMAL;
case XK_KP_Equal: return GLFW_KEY_KP_EQUAL;
case XK_KP_Enter: return GLFW_KEY_KP_ENTER;
default: break;
}
// Now try pimary keysym
key = XKeycodeToKeysym( _glfwLibrary.display, keycode, 0 );
switch( key )
{
// Special keys (non character keys)
case XK_Escape: return GLFW_KEY_ESC;
case XK_Tab: return GLFW_KEY_TAB;
case XK_Shift_L: return GLFW_KEY_LSHIFT;
case XK_Shift_R: return GLFW_KEY_RSHIFT;
case XK_Control_L: return GLFW_KEY_LCTRL;
case XK_Control_R: return GLFW_KEY_RCTRL;
case XK_Meta_L:
case XK_Alt_L: return GLFW_KEY_LALT;
case XK_Mode_switch: // Mapped to Alt_R on many keyboards
case XK_Meta_R:
case XK_ISO_Level3_Shift: // AltGr on at least some machines
case XK_Alt_R: return GLFW_KEY_RALT;
case XK_Super_L: return GLFW_KEY_LSUPER;
case XK_Super_R: return GLFW_KEY_RSUPER;
case XK_Menu: return GLFW_KEY_MENU;
case XK_Num_Lock: return GLFW_KEY_KP_NUM_LOCK;
case XK_Caps_Lock: return GLFW_KEY_CAPS_LOCK;
case XK_Scroll_Lock: return GLFW_KEY_SCROLL_LOCK;
case XK_Pause: return GLFW_KEY_PAUSE;
case XK_KP_Delete:
case XK_Delete: return GLFW_KEY_DEL;
case XK_BackSpace: return GLFW_KEY_BACKSPACE;
case XK_Return: return GLFW_KEY_ENTER;
case XK_KP_Home:
case XK_Home: return GLFW_KEY_HOME;
case XK_KP_End:
case XK_End: return GLFW_KEY_END;
case XK_KP_Page_Up:
case XK_Page_Up: return GLFW_KEY_PAGEUP;
case XK_KP_Page_Down:
case XK_Page_Down: return GLFW_KEY_PAGEDOWN;
case XK_KP_Insert:
case XK_Insert: return GLFW_KEY_INSERT;
case XK_KP_Left:
case XK_Left: return GLFW_KEY_LEFT;
case XK_KP_Right:
case XK_Right: return GLFW_KEY_RIGHT;
case XK_KP_Down:
case XK_Down: return GLFW_KEY_DOWN;
case XK_KP_Up:
case XK_Up: return GLFW_KEY_UP;
case XK_F1: return GLFW_KEY_F1;
case XK_F2: return GLFW_KEY_F2;
case XK_F3: return GLFW_KEY_F3;
case XK_F4: return GLFW_KEY_F4;
case XK_F5: return GLFW_KEY_F5;
case XK_F6: return GLFW_KEY_F6;
case XK_F7: return GLFW_KEY_F7;
case XK_F8: return GLFW_KEY_F8;
case XK_F9: return GLFW_KEY_F9;
case XK_F10: return GLFW_KEY_F10;
case XK_F11: return GLFW_KEY_F11;
case XK_F12: return GLFW_KEY_F12;
case XK_F13: return GLFW_KEY_F13;
case XK_F14: return GLFW_KEY_F14;
case XK_F15: return GLFW_KEY_F15;
case XK_F16: return GLFW_KEY_F16;
case XK_F17: return GLFW_KEY_F17;
case XK_F18: return GLFW_KEY_F18;
case XK_F19: return GLFW_KEY_F19;
case XK_F20: return GLFW_KEY_F20;
case XK_F21: return GLFW_KEY_F21;
case XK_F22: return GLFW_KEY_F22;
case XK_F23: return GLFW_KEY_F23;
case XK_F24: return GLFW_KEY_F24;
case XK_F25: return GLFW_KEY_F25;
// Numeric keypad (should have been detected in secondary keysym!)
case XK_KP_Divide: return GLFW_KEY_KP_DIVIDE;
case XK_KP_Multiply: return GLFW_KEY_KP_MULTIPLY;
case XK_KP_Subtract: return GLFW_KEY_KP_SUBTRACT;
case XK_KP_Add: return GLFW_KEY_KP_ADD;
case XK_KP_Equal: return GLFW_KEY_KP_EQUAL;
case XK_KP_Enter: return GLFW_KEY_KP_ENTER;
// The rest (should be printable keys)
default:
// Make uppercase
XConvertCase( key, &key_lc, &key_uc );
key = key_uc;
// Valid ISO 8859-1 character?
if( (key >= 32 && key <= 126) ||
(key >= 160 && key <= 255) )
{
return (int) key;
}
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_keysym2unicode.c)
return (int) _glfwKeySym2Unicode( keysym );
}
//========================================================================
// Get next X event (called by glfwPollEvents)
//========================================================================
static int getNextEvent( void )
{
XEvent event, next_event;
// Pull next event from event queue
XNextEvent( _glfwLibrary.display, &event );
// Handle certain window messages
switch( event.type )
{
// Is a key being pressed?
case KeyPress:
{
// Translate and report key press
_glfwInputKey( translateKey( event.xkey.keycode ), GLFW_PRESS );
// Translate and report character input
if( _glfwWin.charCallback )
{
_glfwInputChar( translateChar( &event.xkey ), GLFW_PRESS );
}
break;
}
// Is a key being released?
case KeyRelease:
{
// Do not report key releases for key repeats. For key repeats
// we will get KeyRelease/KeyPress pairs with identical time
// stamps. User selected key repeat filtering is handled in
// _glfwInputKey()/_glfwInputChar().
if( XEventsQueued( _glfwLibrary.display, QueuedAfterReading ) )
{
XPeekEvent( _glfwLibrary.display, &next_event );
if( next_event.type == KeyPress &&
next_event.xkey.window == event.xkey.window &&
next_event.xkey.keycode == event.xkey.keycode )
{
// This last check is a hack to work around key repeats
// leaking through due to some sort of time drift
// 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_event.xkey.time - event.xkey.time ) < 20 )
{
// Do not report anything for this event
break;
}
}
}
// Translate and report key release
_glfwInputKey( translateKey( event.xkey.keycode ), GLFW_RELEASE );
// Translate and report character input
if( _glfwWin.charCallback )
{
_glfwInputChar( translateChar( &event.xkey ), GLFW_RELEASE );
}
break;
}
// Were any of the mouse-buttons pressed?
case ButtonPress:
{
if( event.xbutton.button == Button1 )
{
_glfwInputMouseClick( GLFW_MOUSE_BUTTON_LEFT, GLFW_PRESS );
}
else if( event.xbutton.button == Button2 )
{
_glfwInputMouseClick( GLFW_MOUSE_BUTTON_MIDDLE, GLFW_PRESS );
}
else if( event.xbutton.button == Button3 )
{
_glfwInputMouseClick( GLFW_MOUSE_BUTTON_RIGHT, GLFW_PRESS );
}
// XFree86 3.3.2 and later translates mouse wheel up/down into
// mouse button 4 & 5 presses
else if( event.xbutton.button == Button4 )
{
_glfwInput.WheelPos++; // To verify: is this up or down?
if( _glfwWin.mouseWheelCallback )
{
_glfwWin.mouseWheelCallback( _glfwInput.WheelPos );
}
}
else if( event.xbutton.button == Button5 )
{
_glfwInput.WheelPos--;
if( _glfwWin.mouseWheelCallback )
{
_glfwWin.mouseWheelCallback( _glfwInput.WheelPos );
}
}
break;
}
// Were any of the mouse-buttons released?
case ButtonRelease:
{
if( event.xbutton.button == Button1 )
{
_glfwInputMouseClick( GLFW_MOUSE_BUTTON_LEFT,
GLFW_RELEASE );
}
else if( event.xbutton.button == Button2 )
{
_glfwInputMouseClick( GLFW_MOUSE_BUTTON_MIDDLE,
GLFW_RELEASE );
}
else if( event.xbutton.button == Button3 )
{
_glfwInputMouseClick( GLFW_MOUSE_BUTTON_RIGHT,
GLFW_RELEASE );
}
break;
}
// Was the mouse moved?
case MotionNotify:
{
if( event.xmotion.x != _glfwInput.CursorPosX ||
event.xmotion.y != _glfwInput.CursorPosY )
{
if( _glfwWin.mouseLock )
{
_glfwInput.MousePosX += event.xmotion.x -
_glfwInput.CursorPosX;
_glfwInput.MousePosY += event.xmotion.y -
_glfwInput.CursorPosY;
}
else
{
_glfwInput.MousePosX = event.xmotion.x;
_glfwInput.MousePosY = event.xmotion.y;
}
_glfwInput.CursorPosX = event.xmotion.x;
_glfwInput.CursorPosY = event.xmotion.y;
_glfwInput.MouseMoved = GL_TRUE;
// Call user callback function
if( _glfwWin.mousePosCallback )
{
_glfwWin.mousePosCallback( _glfwInput.MousePosX,
_glfwInput.MousePosY );
}
}
break;
}
// Was the window resized?
case ConfigureNotify:
{
if( event.xconfigure.width != _glfwWin.width ||
event.xconfigure.height != _glfwWin.height )
{
_glfwWin.width = event.xconfigure.width;
_glfwWin.height = event.xconfigure.height;
if( _glfwWin.windowSizeCallback )
{
_glfwWin.windowSizeCallback( _glfwWin.width,
_glfwWin.height );
}
}
break;
}
// Was the window closed by the window manager?
case ClientMessage:
{
if( (Atom) event.xclient.data.l[ 0 ] == _glfwWin.WMDeleteWindow )
{
return GL_TRUE;
}
if( (Atom) event.xclient.data.l[ 0 ] == _glfwWin.WMPing )
{
XSendEvent( _glfwLibrary.display,
RootWindow( _glfwLibrary.display, _glfwWin.screen ),
False, SubstructureNotifyMask | SubstructureRedirectMask, &event );
}
break;
}
// Was the window mapped (un-iconified)?
case MapNotify:
_glfwWin.mapNotifyCount++;
break;
// Was the window unmapped (iconified)?
case UnmapNotify:
_glfwWin.mapNotifyCount--;
break;
// Was the window activated?
case FocusIn:
_glfwWin.focusInCount++;
break;
// Was the window de-activated?
case FocusOut:
_glfwWin.focusInCount--;
break;
// Was the window contents damaged?
case Expose:
{
// Call user callback function
if( _glfwWin.windowRefreshCallback )
{
_glfwWin.windowRefreshCallback();
}
break;
}
// Was the window destroyed?
case DestroyNotify:
return GL_FALSE;
default:
{
#if defined( _GLFW_HAS_XRANDR )
switch( event.type - _glfwLibrary.XRandR.eventBase )
{
case RRScreenChangeNotify:
{
// Show XRandR that we really care
XRRUpdateConfiguration( &event );
break;
}
}
#endif
break;
}
}
// The window was not destroyed
return GL_FALSE;
}
//========================================================================
// Create a blank cursor (for locked mouse mode)
//========================================================================
static Cursor createNULLCursor( Display *display, Window root )
{
Pixmap cursormask;
XGCValues xgc;
GC gc;
XColor col;
Cursor cursor;
cursormask = XCreatePixmap( display, root, 1, 1, 1 );
xgc.function = GXclear;
gc = XCreateGC( display, cursormask, GCFunction, &xgc );
XFillRectangle( display, cursormask, gc, 0, 0, 1, 1 );
col.pixel = 0;
col.red = 0;
col.flags = 4;
cursor = XCreatePixmapCursor( display, cursormask, cursormask,
&col,&col, 0,0 );
XFreePixmap( display, cursormask );
XFreeGC( display, gc );
return cursor;
}
//========================================================================
// Returns the specified attribute of the specified GLXFBConfig
// NOTE: Do not call this unless we have found GLX 1.3 or GLX_SGIX_fbconfig
//========================================================================
static int getFBConfigAttrib( GLXFBConfig fbconfig, int attrib )
{
int value;
if( _glfwWin.has_GLX_SGIX_fbconfig )
{
_glfwWin.GetFBConfigAttribSGIX( _glfwLibrary.display, fbconfig, attrib, &value );
}
else
{
glXGetFBConfigAttrib( _glfwLibrary.display, fbconfig, attrib, &value );
}
return value;
}
//========================================================================
// Return a list of available and usable framebuffer configs
//========================================================================
static _GLFWfbconfig *getFBConfigs( unsigned int *found )
{
GLXFBConfig *fbconfigs;
_GLFWfbconfig *result;
int i, count = 0;
*found = 0;
if( _glfwLibrary.glxMajor == 1 && _glfwLibrary.glxMinor < 3 )
{
if( !_glfwWin.has_GLX_SGIX_fbconfig )
{
fprintf(stderr, "GLXFBConfigs are not supported by the X server\n");
return NULL;
}
}
if( _glfwWin.has_GLX_SGIX_fbconfig )
{
fbconfigs = _glfwWin.ChooseFBConfigSGIX( _glfwLibrary.display,
_glfwWin.screen,
NULL,
&count );
if( !count )
{
fprintf(stderr, "No GLXFBConfigs returned");
return NULL;
}
}
else
{
fbconfigs = glXGetFBConfigs( _glfwLibrary.display, _glfwWin.screen, &count );
if( !count )
{
fprintf(stderr, "No GLXFBConfigs returned");
return NULL;
}
}
result = (_GLFWfbconfig*) malloc(sizeof(_GLFWfbconfig) * count);
if( !result )
{
fprintf(stderr, "Out of memory");
return NULL;
}
for( i = 0; i < count; i++ )
{
if( !getFBConfigAttrib( fbconfigs[i], GLX_DOUBLEBUFFER ) ||
!getFBConfigAttrib( fbconfigs[i], GLX_VISUAL_ID ) )
{
// Only consider doublebuffered GLXFBConfigs with associated visuals
continue;
}
if( !( getFBConfigAttrib( fbconfigs[i], GLX_RENDER_TYPE ) & GLX_RGBA_BIT ) )
{
// Only consider RGBA GLXFBConfigs
continue;
}
if( !( getFBConfigAttrib( fbconfigs[i], GLX_DRAWABLE_TYPE ) & GLX_WINDOW_BIT ) )
{
// Only consider window GLXFBConfigs
continue;
}
result[*found].redBits = getFBConfigAttrib( fbconfigs[i], GLX_RED_SIZE );
result[*found].greenBits = getFBConfigAttrib( fbconfigs[i], GLX_GREEN_SIZE );
result[*found].blueBits = getFBConfigAttrib( fbconfigs[i], GLX_BLUE_SIZE );
result[*found].alphaBits = getFBConfigAttrib( fbconfigs[i], GLX_ALPHA_SIZE );
result[*found].depthBits = getFBConfigAttrib( fbconfigs[i], GLX_DEPTH_SIZE );
result[*found].stencilBits = getFBConfigAttrib( fbconfigs[i], GLX_STENCIL_SIZE );
result[*found].accumRedBits = getFBConfigAttrib( fbconfigs[i], GLX_ACCUM_RED_SIZE );
result[*found].accumGreenBits = getFBConfigAttrib( fbconfigs[i], GLX_ACCUM_GREEN_SIZE );
result[*found].accumBlueBits = getFBConfigAttrib( fbconfigs[i], GLX_ACCUM_BLUE_SIZE );
result[*found].accumAlphaBits = getFBConfigAttrib( fbconfigs[i], GLX_ACCUM_ALPHA_SIZE );
result[*found].auxBuffers = getFBConfigAttrib( fbconfigs[i], GLX_AUX_BUFFERS );
result[*found].stereo = getFBConfigAttrib( fbconfigs[i], GLX_STEREO );
if( _glfwWin.has_GLX_ARB_multisample )
{
result[*found].samples = getFBConfigAttrib( fbconfigs[i], GLX_SAMPLES );
}
else
{
result[*found].samples = 0;
}
result[*found].platformID = (GLFWintptr) getFBConfigAttrib( fbconfigs[i], GLX_FBCONFIG_ID );
(*found)++;
}
XFree( fbconfigs );
return result;
}
//========================================================================
// Create the OpenGL context
//========================================================================
#define setGLXattrib( attribs, index, attribName, attribValue ) \
attribs[index++] = attribName; \
attribs[index++] = attribValue;
static int createContext( const _GLFWwndconfig *wndconfig, GLXFBConfigID fbconfigID )
{
int attribs[40];
int flags, dummy, index;
GLXFBConfig *fbconfig;
if( wndconfig->glMajor > 2 )
{
if( !_glfwWin.has_GLX_ARB_create_context )
{
fprintf(stderr, "GLX_ARB_create_context extension not found\n");
return GL_FALSE;
}
}
// Retrieve the previously selected GLXFBConfig
{
index = 0;
setGLXattrib( attribs, index, GLX_FBCONFIG_ID, (int) fbconfigID );
setGLXattrib( attribs, index, None, None );
if( _glfwWin.has_GLX_SGIX_fbconfig )
{
fbconfig = _glfwWin.ChooseFBConfigSGIX( _glfwLibrary.display,
_glfwWin.screen,
attribs,
&dummy );
}
else
{
fbconfig = glXChooseFBConfig( _glfwLibrary.display,
_glfwWin.screen,
attribs,
&dummy );
}
if( fbconfig == NULL )
{
fprintf(stderr, "Unable to retrieve the selected GLXFBConfig\n");
return GL_FALSE;
}
}
// Retrieve the corresponding visual
if( _glfwWin.has_GLX_SGIX_fbconfig )
{
_glfwWin.visual = _glfwWin.GetVisualFromFBConfigSGIX( _glfwLibrary.display,
*fbconfig );
}
else
{
_glfwWin.visual = glXGetVisualFromFBConfig( _glfwLibrary.display, *fbconfig );
}
if( _glfwWin.visual == NULL )
{
XFree( fbconfig );
fprintf(stderr, "Unable to retrieve visual for GLXFBconfig\n");
return GL_FALSE;
}
if( _glfwWin.has_GLX_ARB_create_context )
{
index = 0;
if( wndconfig->glMajor != 0 || wndconfig->glMinor != 0 )
{
// Request an explicitly versioned context
setGLXattrib( attribs, index, GLX_CONTEXT_MAJOR_VERSION_ARB, wndconfig->glMajor );
setGLXattrib( attribs, index, GLX_CONTEXT_MINOR_VERSION_ARB, wndconfig->glMinor );
}
if( wndconfig->glForward || wndconfig->glDebug )
{
flags = 0;
if( wndconfig->glForward )
{
flags |= GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
}
if( wndconfig->glDebug )
{
flags |= GLX_CONTEXT_DEBUG_BIT_ARB;
}
setGLXattrib( attribs, index, GLX_CONTEXT_FLAGS_ARB, flags );
}
if( wndconfig->glProfile )
{
if( !_glfwWin.has_GLX_ARB_create_context_profile )
{
fprintf( stderr, "OpenGL profile requested but GLX_ARB_create_context_profile "
"is unavailable\n" );
return GL_FALSE;
}
if( wndconfig->glProfile == GLFW_OPENGL_CORE_PROFILE )
{
flags = GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
}
else
{
flags = GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
}
setGLXattrib( attribs, index, GLX_CONTEXT_PROFILE_MASK_ARB, flags );
}
setGLXattrib( attribs, index, None, None );
_glfwWin.context = _glfwWin.CreateContextAttribsARB( _glfwLibrary.display,
*fbconfig,
NULL,
True,
attribs );
}
else
{
if( _glfwWin.has_GLX_SGIX_fbconfig )
{
_glfwWin.context = _glfwWin.CreateContextWithConfigSGIX( _glfwLibrary.display,
*fbconfig,
GLX_RGBA_TYPE,
NULL,
True );
}
else
{
_glfwWin.context = glXCreateNewContext( _glfwLibrary.display,
*fbconfig,
GLX_RGBA_TYPE,
NULL,
True );
}
}
XFree( fbconfig );
if( _glfwWin.context == NULL )
{
fprintf(stderr, "Unable to create OpenGL context\n");
return GL_FALSE;
}
_glfwWin.fbconfigID = fbconfigID;
return GL_TRUE;
}
//========================================================================
// Initialize GLX-specific extensions
//========================================================================
static void initGLXExtensions( void )
{
// This needs to include every function pointer loaded below
_glfwWin.SwapIntervalSGI = NULL;
_glfwWin.GetFBConfigAttribSGIX = NULL;
_glfwWin.ChooseFBConfigSGIX = NULL;
_glfwWin.CreateContextWithConfigSGIX = NULL;
_glfwWin.GetVisualFromFBConfigSGIX = NULL;
_glfwWin.CreateContextAttribsARB = NULL;
// This needs to include every extension used below
_glfwWin.has_GLX_SGIX_fbconfig = GL_FALSE;
_glfwWin.has_GLX_SGI_swap_control = GL_FALSE;
_glfwWin.has_GLX_ARB_multisample = GL_FALSE;
_glfwWin.has_GLX_ARB_create_context = GL_FALSE;
_glfwWin.has_GLX_ARB_create_context_profile = GL_FALSE;
if( _glfwPlatformExtensionSupported( "GLX_SGI_swap_control" ) )
{
_glfwWin.SwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC)
_glfwPlatformGetProcAddress( "glXSwapIntervalSGI" );
if( _glfwWin.SwapIntervalSGI )
{
_glfwWin.has_GLX_SGI_swap_control = GL_TRUE;
}
}
if( _glfwPlatformExtensionSupported( "GLX_SGIX_fbconfig" ) )
{
_glfwWin.GetFBConfigAttribSGIX = (PFNGLXGETFBCONFIGATTRIBSGIXPROC)
_glfwPlatformGetProcAddress( "glXGetFBConfigAttribSGIX" );
_glfwWin.ChooseFBConfigSGIX = (PFNGLXCHOOSEFBCONFIGSGIXPROC)
_glfwPlatformGetProcAddress( "glXChooseFBConfigSGIX" );
_glfwWin.CreateContextWithConfigSGIX = (PFNGLXCREATECONTEXTWITHCONFIGSGIXPROC)
_glfwPlatformGetProcAddress( "glXCreateContextWithConfigSGIX" );
_glfwWin.GetVisualFromFBConfigSGIX = (PFNGLXGETVISUALFROMFBCONFIGSGIXPROC)
_glfwPlatformGetProcAddress( "glXGetVisualFromFBConfigSGIX" );
if( _glfwWin.GetFBConfigAttribSGIX &&
_glfwWin.ChooseFBConfigSGIX &&
_glfwWin.CreateContextWithConfigSGIX &&
_glfwWin.GetVisualFromFBConfigSGIX )
{
_glfwWin.has_GLX_SGIX_fbconfig = GL_TRUE;
}
}
if( _glfwPlatformExtensionSupported( "GLX_ARB_multisample" ) )
{
_glfwWin.has_GLX_ARB_multisample = GL_TRUE;
}
if( _glfwPlatformExtensionSupported( "GLX_ARB_create_context" ) )
{
_glfwWin.CreateContextAttribsARB = (PFNGLXCREATECONTEXTATTRIBSARBPROC)
_glfwPlatformGetProcAddress( "glXCreateContextAttribsARB" );
if( _glfwWin.CreateContextAttribsARB )
{
_glfwWin.has_GLX_ARB_create_context = GL_TRUE;
}
}
if( _glfwPlatformExtensionSupported( "GLX_ARB_create_context_profile" ) )
{
_glfwWin.has_GLX_ARB_create_context_profile = GL_TRUE;
}
}
//========================================================================
// Create the X11 window (and its colormap)
//========================================================================
static GLboolean createWindow( int width, int height,
const _GLFWwndconfig *wndconfig )
{
XEvent event;
Atom protocols[2];
XSizeHints *sizehints;
unsigned long wamask;
XSetWindowAttributes wa;
// Every window needs a colormap
// We create one based on the visual used by the current context
_glfwWin.colormap = XCreateColormap( _glfwLibrary.display,
RootWindow( _glfwLibrary.display,
_glfwWin.screen ),
_glfwWin.visual->visual,
AllocNone );
// Create the actual window
{
wamask = CWBorderPixel | CWColormap | CWEventMask;
wa.colormap = _glfwWin.colormap;
wa.border_pixel = 0;
wa.event_mask = StructureNotifyMask | KeyPressMask | KeyReleaseMask |
PointerMotionMask | ButtonPressMask | ButtonReleaseMask |
ExposureMask | FocusChangeMask | VisibilityChangeMask;
if( wndconfig->mode == GLFW_WINDOW )
{
// The /only/ reason we are setting the background pixel here is
// because otherwise our window wont get any decorations on systems
// using Compiz on Intel hardware
wa.background_pixel = BlackPixel( _glfwLibrary.display, _glfwWin.screen );
wamask |= CWBackPixel;
}
_glfwWin.window = XCreateWindow(
_glfwLibrary.display,
RootWindow( _glfwLibrary.display, _glfwWin.screen ),
0, 0, // Upper left corner of this window on root
_glfwWin.width, _glfwWin.height,
0, // Border width
_glfwWin.visual->depth, // Color depth
InputOutput,
_glfwWin.visual->visual,
wamask,
&wa
);
if( !_glfwWin.window )
{
_glfwPlatformCloseWindow();
return GL_FALSE;
}
}
// Declare which WM protocols we support
{
// Basic window close notification protocol
_glfwWin.WMDeleteWindow = XInternAtom( _glfwLibrary.display,
"WM_DELETE_WINDOW",
False );
// Tells the WM to ping our window and flag us as unresponsive if we
// don't reply within a few seconds
_glfwWin.WMPing = XInternAtom( _glfwLibrary.display, "_NET_WM_PING", False );
protocols[0] = _glfwWin.WMDeleteWindow;
protocols[1] = _glfwWin.WMPing;
XSetWMProtocols( _glfwLibrary.display, _glfwWin.window, protocols,
sizeof(protocols) / sizeof(Atom) );
}
if( wndconfig->mode == GLFW_FULLSCREEN )
{
disableDecorations();
}
// Set window position and size WM hints
{
sizehints = XAllocSizeHints();
sizehints->flags = 0;
if( wndconfig->windowNoResize )
{
sizehints->flags |= (PMinSize | PMaxSize);
sizehints->min_width = sizehints->max_width = _glfwWin.width;
sizehints->min_height = sizehints->max_height = _glfwWin.height;
}
if( wndconfig->mode == GLFW_FULLSCREEN )
{
sizehints->flags |= PPosition;
sizehints->x = 0;
sizehints->y = 0;
}
XSetWMNormalHints( _glfwLibrary.display, _glfwWin.window, sizehints );
XFree( sizehints );
}
_glfwPlatformSetWindowTitle( "GLFW Window" );
XMapWindow( _glfwLibrary.display, _glfwWin.window );
// Wait for map notification
XIfEvent( _glfwLibrary.display, &event, isMapNotify,
(char*)_glfwWin.window );
// Make sure that our window ends up on top of things
XRaiseWindow( _glfwLibrary.display, _glfwWin.window );
return GL_TRUE;
}
//************************************************************************
//**** Platform implementation functions ****
//************************************************************************
//========================================================================
// Here is where the window is created, and
// the OpenGL rendering context is created
//========================================================================
int _glfwPlatformOpenWindow( int width, int height,
const _GLFWwndconfig* wndconfig,
const _GLFWfbconfig* fbconfig )
{
unsigned int mask, fbcount;
_GLFWfbconfig *fbconfigs;
_GLFWfbconfig closest;
const _GLFWfbconfig *result;
Window window, root;
int windowX, windowY, rootX, rootY;
// Clear platform specific GLFW window state
_glfwWin.visual = (XVisualInfo*)NULL;
_glfwWin.colormap = (Colormap)0;
_glfwWin.context = (GLXContext)NULL;
_glfwWin.window = (Window)0;
_glfwWin.pointerGrabbed = GL_FALSE;
_glfwWin.pointerHidden = GL_FALSE;
_glfwWin.keyboardGrabbed = GL_FALSE;
_glfwWin.overrideRedirect = GL_FALSE;
_glfwWin.FS.modeChanged = GL_FALSE;
_glfwWin.Saver.changed = GL_FALSE;
_glfwWin.refreshRate = wndconfig->refreshRate;
_glfwWin.windowNoResize = wndconfig->windowNoResize;
// As the 2.x API doesn't understand screens, we hardcode this choice and
// hope for the best
_glfwWin.screen = DefaultScreen( _glfwLibrary.display );
initGLXExtensions();
// Choose the best available fbconfig
{
fbconfigs = getFBConfigs( &fbcount );
if( !fbconfigs )
{
_glfwPlatformCloseWindow();
return GL_FALSE;
}
result = _glfwChooseFBConfig( fbconfig, fbconfigs, fbcount );
if( !result )
{
free( fbconfigs );
_glfwPlatformCloseWindow();
return GL_FALSE;
}
closest = *result;
free( fbconfigs );
fbconfigs = NULL;
result = NULL;
}
if( !createContext( wndconfig, (GLXFBConfigID) closest.platformID ) )
{
_glfwPlatformCloseWindow();
return GL_FALSE;
}
if( wndconfig->mode == GLFW_FULLSCREEN )
{
// Change video mode
_glfwSetVideoMode( _glfwWin.screen, &_glfwWin.width,
&_glfwWin.height, &_glfwWin.refreshRate );
// Remember old screen saver settings
XGetScreenSaver( _glfwLibrary.display, &_glfwWin.Saver.timeout,
&_glfwWin.Saver.interval, &_glfwWin.Saver.blanking,
&_glfwWin.Saver.exposure );
// Disable screen saver
XSetScreenSaver( _glfwLibrary.display, 0, 0, DontPreferBlanking,
DefaultExposures );
}
if( !createWindow( width, height, wndconfig ) )
{
_glfwPlatformCloseWindow();
return GL_FALSE;
}
if( wndconfig->mode == GLFW_FULLSCREEN )
{
// Fullscreen mode post-window-creation work
#if defined( _GLFW_HAS_XRANDR )
// Request screen change notifications
if( _glfwLibrary.XRandR.available )
{
XRRSelectInput( _glfwLibrary.display,
_glfwWin.window,
RRScreenChangeNotifyMask );
}
#endif
// Force window position/size (some WMs do their own window
// geometry, which we want to override)
XMoveWindow( _glfwLibrary.display, _glfwWin.window, 0, 0 );
XResizeWindow( _glfwLibrary.display, _glfwWin.window, _glfwWin.width,
_glfwWin.height );
if( XGrabKeyboard( _glfwLibrary.display, _glfwWin.window, True,
GrabModeAsync, GrabModeAsync, CurrentTime ) ==
GrabSuccess )
{
_glfwWin.keyboardGrabbed = GL_TRUE;
}
if( XGrabPointer( _glfwLibrary.display, _glfwWin.window, True,
ButtonPressMask | ButtonReleaseMask |
PointerMotionMask, GrabModeAsync, GrabModeAsync,
_glfwWin.window, None, CurrentTime ) ==
GrabSuccess )
{
_glfwWin.pointerGrabbed = GL_TRUE;
}
// Try to get window inside viewport (for virtual displays) by
// moving the mouse cursor to the upper left corner (and then to
// the center) - this works for XFree86
XWarpPointer( _glfwLibrary.display, None, _glfwWin.window, 0,0,0,0, 0,0 );
XWarpPointer( _glfwLibrary.display, None, _glfwWin.window, 0,0,0,0,
_glfwWin.width/2, _glfwWin.height/2 );
}
// Retrieve and set initial cursor position
{
XQueryPointer( _glfwLibrary.display,
_glfwWin.window,
&root,
&window,
&rootX, &rootY,
&windowX, &windowY,
&mask );
// TODO: Probably check for some corner cases here.
_glfwInput.MousePosX = windowX;
_glfwInput.MousePosY = windowY;
}
// Connect the context to the window
glXMakeCurrent( _glfwLibrary.display, _glfwWin.window, _glfwWin.context );
// Start by clearing the front buffer to black (avoid ugly desktop
// remains in our OpenGL window)
glClear( GL_COLOR_BUFFER_BIT );
glXSwapBuffers( _glfwLibrary.display, _glfwWin.window );
return GL_TRUE;
}
//========================================================================
// Properly kill the window/video display
//========================================================================
void _glfwPlatformCloseWindow( void )
{
#if defined( _GLFW_HAS_XRANDR )
XRRScreenConfiguration *sc;
Window root;
#endif
// Do we have a rendering context?
if( _glfwWin.context )
{
// Release the context
glXMakeCurrent( _glfwLibrary.display, None, NULL );
// Delete the context
glXDestroyContext( _glfwLibrary.display, _glfwWin.context );
_glfwWin.context = NULL;
}
// Do we have a visual?
if( _glfwWin.visual )
{
XFree( _glfwWin.visual );
_glfwWin.visual = NULL;
}
// Ungrab pointer and/or keyboard?
if( _glfwWin.keyboardGrabbed )
{
XUngrabKeyboard( _glfwLibrary.display, CurrentTime );
_glfwWin.keyboardGrabbed = GL_FALSE;
}
if( _glfwWin.pointerGrabbed )
{
XUngrabPointer( _glfwLibrary.display, CurrentTime );
_glfwWin.pointerGrabbed = GL_FALSE;
}
// Do we have a window?
if( _glfwWin.window )
{
// Unmap the window
XUnmapWindow( _glfwLibrary.display, _glfwWin.window );
// Destroy the window
XDestroyWindow( _glfwLibrary.display, _glfwWin.window );
_glfwWin.window = (Window) 0;
}
if( _glfwWin.colormap )
{
XFreeColormap( _glfwLibrary.display, _glfwWin.colormap );
_glfwWin.colormap = (Colormap) 0;
}
// Did we change the fullscreen resolution?
if( _glfwWin.FS.modeChanged )
{
#if defined( _GLFW_HAS_XRANDR )
if( _glfwLibrary.XRandR.available )
{
root = RootWindow( _glfwLibrary.display, _glfwWin.screen );
sc = XRRGetScreenInfo( _glfwLibrary.display, root );
XRRSetScreenConfig( _glfwLibrary.display,
sc,
root,
_glfwWin.FS.oldSizeID,
_glfwWin.FS.oldRotation,
CurrentTime );
XRRFreeScreenConfigInfo( sc );
}
#elif defined( _GLFW_HAS_XF86VIDMODE )
if( _glfwLibrary.XF86VidMode.available )
{
// Unlock mode switch
XF86VidModeLockModeSwitch( _glfwLibrary.display,
_glfwWin.screen,
0 );
// Change the video mode back to the old mode
XF86VidModeSwitchToMode( _glfwLibrary.display,
_glfwWin.screen,
&_glfwWin.FS.oldMode );
}
#endif
_glfwWin.FS.modeChanged = GL_FALSE;
}
// Did we change the screen saver setting?
if( _glfwWin.Saver.changed )
{
// Restore old screen saver settings
XSetScreenSaver( _glfwLibrary.display,
_glfwWin.Saver.timeout,
_glfwWin.Saver.interval,
_glfwWin.Saver.blanking,
_glfwWin.Saver.exposure );
_glfwWin.Saver.changed = GL_FALSE;
}
}
//========================================================================
// _glfwPlatformSetWindowTitle() - Set the window title.
//========================================================================
void _glfwPlatformSetWindowTitle( const char *title )
{
// Set window & icon title
XStoreName( _glfwLibrary.display, _glfwWin.window, title );
XSetIconName( _glfwLibrary.display, _glfwWin.window, title );
}
//========================================================================
// _glfwPlatformSetWindowSize() - Set the window size.
//========================================================================
void _glfwPlatformSetWindowSize( int width, int height )
{
int mode = 0, rate, sizeChanged = GL_FALSE;
XSizeHints *sizehints;
rate = _glfwWin.refreshRate;
// If we are in fullscreen mode, get some info about the current mode
if( _glfwWin.fullscreen )
{
// Get closest match for target video mode
mode = _glfwGetClosestVideoMode( _glfwWin.screen, &width, &height, &rate );
}
if( _glfwWin.windowNoResize )
{
sizehints = XAllocSizeHints();
sizehints->flags = 0;
sizehints->min_width = sizehints->max_width = width;
sizehints->min_height = sizehints->max_height = height;
XSetWMNormalHints( _glfwLibrary.display, _glfwWin.window, sizehints );
XFree( sizehints );
}
// Change window size before changing fullscreen mode?
if( _glfwWin.fullscreen && (width > _glfwWin.width) )
{
XResizeWindow( _glfwLibrary.display, _glfwWin.window, width, height );
sizeChanged = GL_TRUE;
}
// Change fullscreen video mode?
if( _glfwWin.fullscreen )
{
// Change video mode (keeping current rate)
_glfwSetVideoModeMODE( _glfwWin.screen, mode, _glfwWin.refreshRate );
}
// Set window size (if not already changed)
if( !sizeChanged )
{
XResizeWindow( _glfwLibrary.display, _glfwWin.window, width, height );
}
}
//========================================================================
// _glfwPlatformSetWindowPos() - Set the window position.
//========================================================================
void _glfwPlatformSetWindowPos( int x, int y )
{
// Set window position
XMoveWindow( _glfwLibrary.display, _glfwWin.window, x, y );
}
//========================================================================
// _glfwPlatformIconfyWindow() - Window iconification
//========================================================================
void _glfwPlatformIconifyWindow( void )
{
// We can't do this for override redirect windows
if( _glfwWin.overrideRedirect )
{
return;
}
// In fullscreen mode, we need to restore the desktop video mode
if( _glfwWin.fullscreen )
{
#if defined( _GLFW_HAS_XRANDR )
if( _glfwLibrary.XRandR.available )
{
// TODO: The code.
}
#elif defined( _GLFW_HAS_XF86VIDMODE )
if( _glfwLibrary.XF86VidMode.available )
{
// Unlock mode switch
XF86VidModeLockModeSwitch( _glfwLibrary.display,
_glfwWin.screen,
0 );
// Change the video mode back to the old mode
XF86VidModeSwitchToMode( _glfwLibrary.display,
_glfwWin.screen, &_glfwWin.FS.oldMode );
}
#endif
_glfwWin.FS.modeChanged = GL_FALSE;
}
// Show mouse pointer
if( _glfwWin.pointerHidden )
{
XUndefineCursor( _glfwLibrary.display, _glfwWin.window );
_glfwWin.pointerHidden = GL_FALSE;
}
// Un-grab mouse pointer
if( _glfwWin.pointerGrabbed )
{
XUngrabPointer( _glfwLibrary.display, CurrentTime );
_glfwWin.pointerGrabbed = GL_FALSE;
}
// Iconify window
XIconifyWindow( _glfwLibrary.display, _glfwWin.window,
_glfwWin.screen );
// Window is now iconified
_glfwWin.iconified = GL_TRUE;
}
//========================================================================
// Window un-iconification
//========================================================================
void _glfwPlatformRestoreWindow( void )
{
// We can't do this for override redirect windows
if( _glfwWin.overrideRedirect )
{
return;
}
// In fullscreen mode, change back video mode to user selected mode
if( _glfwWin.fullscreen )
{
_glfwSetVideoMode( _glfwWin.screen,
&_glfwWin.width, &_glfwWin.height, &_glfwWin.refreshRate );
}
// Un-iconify window
XMapWindow( _glfwLibrary.display, _glfwWin.window );
// In fullscreen mode...
if( _glfwWin.fullscreen )
{
// Make sure window is in upper left corner
XMoveWindow( _glfwLibrary.display, _glfwWin.window, 0, 0 );
// Get input focus
XSetInputFocus( _glfwLibrary.display, _glfwWin.window, RevertToParent,
CurrentTime );
}
// Lock mouse, if necessary
if( _glfwWin.mouseLock )
{
// Hide cursor
if( !_glfwWin.pointerHidden )
{
XDefineCursor( _glfwLibrary.display, _glfwWin.window,
createNULLCursor( _glfwLibrary.display,
_glfwWin.window ) );
_glfwWin.pointerHidden = GL_TRUE;
}
// Grab cursor
if( !_glfwWin.pointerGrabbed )
{
if( XGrabPointer( _glfwLibrary.display, _glfwWin.window, True,
ButtonPressMask | ButtonReleaseMask |
PointerMotionMask, GrabModeAsync,
GrabModeAsync, _glfwWin.window, None,
CurrentTime ) == GrabSuccess )
{
_glfwWin.pointerGrabbed = GL_TRUE;
}
}
}
// Window is no longer iconified
_glfwWin.iconified = GL_FALSE;
}
//========================================================================
// _glfwPlatformSwapBuffers() - Swap buffers (double-buffering) and poll
// any new events.
//========================================================================
void _glfwPlatformSwapBuffers( void )
{
// Update display-buffer
glXSwapBuffers( _glfwLibrary.display, _glfwWin.window );
}
//========================================================================
// _glfwPlatformSwapInterval() - Set double buffering swap interval
//========================================================================
void _glfwPlatformSwapInterval( int interval )
{
if( _glfwWin.has_GLX_SGI_swap_control )
{
_glfwWin.SwapIntervalSGI( interval );
}
}
//========================================================================
// Read back framebuffer parameters from the context
//========================================================================
void _glfwPlatformRefreshWindowParams( void )
{
int dummy;
GLXFBConfig *fbconfig;
#if defined( _GLFW_HAS_XRANDR )
XRRScreenConfiguration *sc;
#elif defined( _GLFW_HAS_XF86VIDMODE )
XF86VidModeModeLine modeline;
int dotclock;
float pixels_per_second, pixels_per_frame;
#endif
int attribs[] = { GLX_FBCONFIG_ID, _glfwWin.fbconfigID, None };
if( _glfwWin.has_GLX_SGIX_fbconfig )
{
fbconfig = _glfwWin.ChooseFBConfigSGIX( _glfwLibrary.display,
_glfwWin.screen,
attribs,
&dummy );
}
else
{
fbconfig = glXChooseFBConfig( _glfwLibrary.display,
_glfwWin.screen,
attribs,
&dummy );
}
if( fbconfig == NULL )
{
// This should never ever happen
// TODO: Figure out what to do when this happens
fprintf( stderr, "Cannot find known GLXFBConfig by ID. "
"This cannot happen. Have a nice day.\n");
abort();
}
// There is no clear definition of an "accelerated" context on X11/GLX, and
// true sounds better than false, so we hardcode true here
_glfwWin.accelerated = GL_TRUE;
// "Standard" window parameters
_glfwWin.redBits = getFBConfigAttrib( *fbconfig, GLX_RED_SIZE );
_glfwWin.greenBits = getFBConfigAttrib( *fbconfig, GLX_GREEN_SIZE );
_glfwWin.blueBits = getFBConfigAttrib( *fbconfig, GLX_BLUE_SIZE );
_glfwWin.alphaBits = getFBConfigAttrib( *fbconfig, GLX_ALPHA_SIZE );
_glfwWin.depthBits = getFBConfigAttrib( *fbconfig, GLX_DEPTH_SIZE );
_glfwWin.stencilBits = getFBConfigAttrib( *fbconfig, GLX_STENCIL_SIZE );
_glfwWin.accumRedBits = getFBConfigAttrib( *fbconfig, GLX_ACCUM_RED_SIZE );
_glfwWin.accumGreenBits = getFBConfigAttrib( *fbconfig, GLX_ACCUM_GREEN_SIZE );
_glfwWin.accumBlueBits = getFBConfigAttrib( *fbconfig, GLX_ACCUM_BLUE_SIZE );
_glfwWin.accumAlphaBits = getFBConfigAttrib( *fbconfig, GLX_ACCUM_ALPHA_SIZE );
_glfwWin.auxBuffers = getFBConfigAttrib( *fbconfig, GLX_AUX_BUFFERS );
// Get stereo rendering setting
_glfwWin.stereo = getFBConfigAttrib( *fbconfig, GLX_STEREO ) ? 1 : 0;
// Get multisample buffer samples
if( _glfwWin.has_GLX_ARB_multisample )
{
_glfwWin.samples = getFBConfigAttrib( *fbconfig, GLX_SAMPLES );
}
else
{
_glfwWin.samples = 0;
}
// Default to refresh rate unknown (=0 according to GLFW spec)
_glfwWin.refreshRate = 0;
// Retrieve refresh rate if possible
#if defined( _GLFW_HAS_XRANDR )
if( _glfwLibrary.XRandR.available )
{
sc = XRRGetScreenInfo( _glfwLibrary.display,
RootWindow( _glfwLibrary.display, _glfwWin.screen ) );
_glfwWin.refreshRate = XRRConfigCurrentRate( sc );
XRRFreeScreenConfigInfo( sc );
}
#elif defined( _GLFW_HAS_XF86VIDMODE )
if( _glfwLibrary.XF86VidMode.available )
{
// Use the XF86VidMode extension to get current video mode
XF86VidModeGetModeLine( _glfwLibrary.display, _glfwWin.screen,
&dotclock, &modeline );
pixels_per_second = 1000.0f * (float) dotclock;
pixels_per_frame = (float) modeline.htotal * modeline.vtotal;
_glfwWin.refreshRate = (int)(pixels_per_second/pixels_per_frame+0.5);
}
#endif
XFree( fbconfig );
}
//========================================================================
// _glfwPlatformPollEvents() - Poll for new window and input events
//========================================================================
void _glfwPlatformPollEvents( void )
{
int winclosed = GL_FALSE;
// Flag that the cursor has not moved
_glfwInput.MouseMoved = GL_FALSE;
// Clear MapNotify and FocusIn counts
_glfwWin.mapNotifyCount = 0;
_glfwWin.focusInCount = 0;
// Empty the window event queue
while( XPending( _glfwLibrary.display ) )
{
if( getNextEvent() )
{
winclosed = GL_TRUE;
}
}
// Did we get mouse movement in locked cursor mode?
if( _glfwInput.MouseMoved && _glfwWin.mouseLock )
{
int maxx, minx, maxy, miny;
// Calculate movement threshold
minx = _glfwWin.width / 4;
maxx = (_glfwWin.width * 3) / 4;
miny = _glfwWin.height / 4;
maxy = (_glfwWin.height * 3) / 4;
// Did the mouse cursor move beyond our movement threshold
if(_glfwInput.CursorPosX < minx || _glfwInput.CursorPosX > maxx ||
_glfwInput.CursorPosY < miny || _glfwInput.CursorPosY > maxy)
{
// Move the mouse pointer back to the window center so that it
// does not wander off...
_glfwPlatformSetMouseCursorPos( _glfwWin.width/2,
_glfwWin.height/2 );
}
}
// Was the window (un)iconified?
if( _glfwWin.mapNotifyCount < 0 && !_glfwWin.iconified )
{
// Show mouse pointer
if( _glfwWin.pointerHidden )
{
XUndefineCursor( _glfwLibrary.display, _glfwWin.window );
_glfwWin.pointerHidden = GL_FALSE;
}
// Un-grab mouse pointer
if( _glfwWin.pointerGrabbed )
{
XUngrabPointer( _glfwLibrary.display, CurrentTime );
_glfwWin.pointerGrabbed = GL_FALSE;
}
_glfwWin.iconified = GL_TRUE;
}
else if( _glfwWin.mapNotifyCount > 0 && _glfwWin.iconified )
{
// Restore fullscreen mode properties
if( _glfwWin.fullscreen )
{
// Change back video mode to user selected mode
_glfwSetVideoMode( _glfwWin.screen, &_glfwWin.width,
&_glfwWin.height, &_glfwWin.refreshRate );
// Disable window manager decorations
enableDecorations();
// Make sure window is in upper left corner
XMoveWindow( _glfwLibrary.display, _glfwWin.window, 0, 0 );
// Get input focus
XSetInputFocus( _glfwLibrary.display, _glfwWin.window,
RevertToParent, CurrentTime );
}
// Hide cursor if necessary
if( _glfwWin.mouseLock && !_glfwWin.pointerHidden )
{
if( !_glfwWin.pointerHidden )
{
XDefineCursor( _glfwLibrary.display, _glfwWin.window,
createNULLCursor( _glfwLibrary.display,
_glfwWin.window ) );
_glfwWin.pointerHidden = GL_TRUE;
}
}
// Grab cursor if necessary
if( (_glfwWin.mouseLock || _glfwWin.fullscreen) &&
!_glfwWin.pointerGrabbed )
{
if( XGrabPointer( _glfwLibrary.display, _glfwWin.window, True,
ButtonPressMask | ButtonReleaseMask |
PointerMotionMask, GrabModeAsync,
GrabModeAsync, _glfwWin.window, None,
CurrentTime ) == GrabSuccess )
{
_glfwWin.pointerGrabbed = GL_TRUE;
}
}
_glfwWin.iconified = GL_FALSE;
}
// Did the window get/lose focus
if( _glfwWin.focusInCount > 0 && !_glfwWin.active )
{
// If we are in fullscreen mode, restore window
if( _glfwWin.fullscreen && _glfwWin.iconified )
{
_glfwPlatformRestoreWindow();
}
// Window is now active
_glfwWin.active = GL_TRUE;
}
else if( _glfwWin.focusInCount < 0 && _glfwWin.active )
{
// If we are in fullscreen mode, iconfify window
if( _glfwWin.fullscreen )
{
_glfwPlatformIconifyWindow();
}
// Window is not active
_glfwWin.active = GL_FALSE;
_glfwInputDeactivation();
}
// Was there a window close request?
if( winclosed && _glfwWin.windowCloseCallback )
{
// Check if the program wants us to close the window
winclosed = _glfwWin.windowCloseCallback();
}
if( winclosed )
{
glfwCloseWindow();
}
}
//========================================================================
// _glfwPlatformWaitEvents() - Wait for new window and input events
//========================================================================
void _glfwPlatformWaitEvents( void )
{
XEvent event;
// Wait for new events (blocking)
XNextEvent( _glfwLibrary.display, &event );
XPutBackEvent( _glfwLibrary.display, &event );
// Poll events from queue
_glfwPlatformPollEvents();
}
//========================================================================
// _glfwPlatformHideMouseCursor() - Hide mouse cursor (lock it)
//========================================================================
void _glfwPlatformHideMouseCursor( void )
{
// Hide cursor
if( !_glfwWin.pointerHidden )
{
XDefineCursor( _glfwLibrary.display, _glfwWin.window,
createNULLCursor( _glfwLibrary.display,
_glfwWin.window ) );
_glfwWin.pointerHidden = GL_TRUE;
}
// Grab cursor to user window
if( !_glfwWin.pointerGrabbed )
{
if( XGrabPointer( _glfwLibrary.display, _glfwWin.window, True,
ButtonPressMask | ButtonReleaseMask |
PointerMotionMask, GrabModeAsync, GrabModeAsync,
_glfwWin.window, None, CurrentTime ) ==
GrabSuccess )
{
_glfwWin.pointerGrabbed = GL_TRUE;
}
}
}
//========================================================================
// _glfwPlatformShowMouseCursor() - Show mouse cursor (unlock it)
//========================================================================
void _glfwPlatformShowMouseCursor( void )
{
// Un-grab cursor (only in windowed mode: in fullscreen mode we still
// want the mouse grabbed in order to confine the cursor to the window
// area)
if( _glfwWin.pointerGrabbed && !_glfwWin.fullscreen )
{
XUngrabPointer( _glfwLibrary.display, CurrentTime );
_glfwWin.pointerGrabbed = GL_FALSE;
}
// Show cursor
if( _glfwWin.pointerHidden )
{
XUndefineCursor( _glfwLibrary.display, _glfwWin.window );
_glfwWin.pointerHidden = GL_FALSE;
}
}
//========================================================================
// _glfwPlatformSetMouseCursorPos() - Set physical mouse cursor position
//========================================================================
void _glfwPlatformSetMouseCursorPos( int x, int y )
{
// Change cursor position
_glfwInput.CursorPosX = x;
_glfwInput.CursorPosY = y;
XWarpPointer( _glfwLibrary.display, None, _glfwWin.window, 0,0,0,0, x, y );
}