/* Check if the window is in full screen state. */
static int fghCheckFullScreen(void)
{
#if TARGET_HOST_POSIX_X11
int result;
result = 0;
if (fgDisplay.StateFullScreen != None)
{
result = fgHintPresent(fgStructure.CurrentWindow->Window.Handle,
fgDisplay.State,
fgDisplay.StateFullScreen);
}
return result;
#else
return 0;
#endif
}
/*
* A call to this function should initialize all the display stuff...
*/
static void fghInitialize( const char* displayName )
{
#if TARGET_HOST_POSIX_X11
fgDisplay.Display = XOpenDisplay( displayName );
if( fgDisplay.Display == NULL )
fgError( "failed to open display '%s'", XDisplayName( displayName ) );
if( !glXQueryExtension( fgDisplay.Display, NULL, NULL ) )
fgError( "OpenGL GLX extension not supported by display '%s'",
XDisplayName( displayName ) );
fgDisplay.Screen = DefaultScreen( fgDisplay.Display );
fgDisplay.RootWindow = RootWindow(
fgDisplay.Display,
fgDisplay.Screen
);
fgDisplay.ScreenWidth = DisplayWidth(
fgDisplay.Display,
fgDisplay.Screen
);
fgDisplay.ScreenHeight = DisplayHeight(
fgDisplay.Display,
fgDisplay.Screen
);
fgDisplay.ScreenWidthMM = DisplayWidthMM(
fgDisplay.Display,
fgDisplay.Screen
);
fgDisplay.ScreenHeightMM = DisplayHeightMM(
fgDisplay.Display,
fgDisplay.Screen
);
fgDisplay.Connection = ConnectionNumber( fgDisplay.Display );
/* Create the window deletion atom */
fgDisplay.DeleteWindow = fghGetAtom("WM_DELETE_WINDOW");
/* Create the state and full screen atoms */
fgDisplay.State = None;
fgDisplay.StateFullScreen = None;
if (fghNetWMSupported())
{
const Atom supported = fghGetAtom("_NET_SUPPORTED");
const Atom state = fghGetAtom("_NET_WM_STATE");
/* Check if the state hint is supported. */
if (fgHintPresent(fgDisplay.RootWindow, supported, state))
{
const Atom full_screen = fghGetAtom("_NET_WM_STATE_FULLSCREEN");
fgDisplay.State = state;
/* Check if the window manager supports full screen. */
/** Check "_NET_WM_ALLOWED_ACTIONS" on our window instead? **/
if (fgHintPresent(fgDisplay.RootWindow, supported, full_screen))
{
fgDisplay.StateFullScreen = full_screen;
}
}
}
#elif TARGET_HOST_MS_WINDOWS
WNDCLASS wc;
ATOM atom;
/* What we need to do is to initialize the fgDisplay global structure here. */
fgDisplay.Instance = GetModuleHandle( NULL );
fgDisplay.DisplayName= displayName ? strdup(displayName) : 0 ;
atom = GetClassInfo( fgDisplay.Instance, _T("FREEGLUT"), &wc );
if( atom == 0 )
{
ZeroMemory( &wc, sizeof(WNDCLASS) );
/*
* Each of the windows should have its own device context, and we
* want redraw events during Vertical and Horizontal Resizes by
* the user.
*
* XXX Old code had "| CS_DBCLCKS" commented out. Plans for the
* XXX future? Dead-end idea?
*/
wc.lpfnWndProc = fgWindowProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = fgDisplay.Instance;
wc.hIcon = LoadIcon( fgDisplay.Instance, _T("GLUT_ICON") );
#if defined(_WIN32_WCE)
wc.style = CS_HREDRAW | CS_VREDRAW;
#else
wc.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
if (!wc.hIcon)
wc.hIcon = LoadIcon( NULL, IDI_WINLOGO );
#endif
wc.hCursor = LoadCursor( NULL, IDC_ARROW );
wc.hbrBackground = NULL;
wc.lpszMenuName = NULL;
wc.lpszClassName = _T("FREEGLUT");
/* Register the window class */
atom = RegisterClass( &wc );
FREEGLUT_INTERNAL_ERROR_EXIT ( atom, "Window Class Not Registered", "fghInitialize" );
}
/* The screen dimensions can be obtained via GetSystemMetrics() calls */
fgDisplay.ScreenWidth = GetSystemMetrics( SM_CXSCREEN );
fgDisplay.ScreenHeight = GetSystemMetrics( SM_CYSCREEN );
{
HWND desktop = GetDesktopWindow( );
HDC context = GetDC( desktop );
fgDisplay.ScreenWidthMM = GetDeviceCaps( context, HORZSIZE );
fgDisplay.ScreenHeightMM = GetDeviceCaps( context, VERTSIZE );
ReleaseDC( desktop, context );
}
/* If we have a DisplayName try to use it for metrics */
if( fgDisplay.DisplayName )
{
HDC context = CreateDC(fgDisplay.DisplayName,0,0,0);
if( context )
{
fgDisplay.ScreenWidth = GetDeviceCaps( context, HORZRES );
fgDisplay.ScreenHeight = GetDeviceCaps( context, VERTRES );
fgDisplay.ScreenWidthMM = GetDeviceCaps( context, HORZSIZE );
fgDisplay.ScreenHeightMM = GetDeviceCaps( context, VERTSIZE );
DeleteDC(context);
}
else
fgWarning("fghInitialize: "
"CreateDC failed, Screen size info may be incorrect\n"
"This is quite likely caused by a bad '-display' parameter");
}
/* Set the timer granularity to 1 ms */
timeBeginPeriod ( 1 );
#endif
fgState.Initialised = GL_TRUE;
/* Avoid registering atexit callback on Win32 as it results in an access
* violation due to calling into a module which has been unloaded.
* Any cleanup isn't needed on Windows anyway, the OS takes care of it.c
* see: http://blogs.msdn.com/b/oldnewthing/archive/2012/01/05/10253268.aspx
*/
#if ( TARGET_HOST_MS_WINDOWS == 0 )
atexit(fgDeinitialize);
#endif
/* InputDevice uses GlutTimerFunc(), so fgState.Initialised must be TRUE */
fgInitialiseInputDevices();
}
/*
* A call to this function should initialize all the display stuff...
*/
void fgPlatformInitialize( const char* displayName )
{
fgDisplay.pDisplay.Display = XOpenDisplay( displayName );
if( fgDisplay.pDisplay.Display == NULL )
fgError( "failed to open display '%s'", XDisplayName( displayName ) );
if( !glXQueryExtension( fgDisplay.pDisplay.Display, NULL, NULL ) )
fgError( "OpenGL GLX extension not supported by display '%s'",
XDisplayName( displayName ) );
fgDisplay.pDisplay.Screen = DefaultScreen( fgDisplay.pDisplay.Display );
fgDisplay.pDisplay.RootWindow = RootWindow(
fgDisplay.pDisplay.Display,
fgDisplay.pDisplay.Screen
);
fgDisplay.ScreenWidth = DisplayWidth(
fgDisplay.pDisplay.Display,
fgDisplay.pDisplay.Screen
);
fgDisplay.ScreenHeight = DisplayHeight(
fgDisplay.pDisplay.Display,
fgDisplay.pDisplay.Screen
);
fgDisplay.ScreenWidthMM = DisplayWidthMM(
fgDisplay.pDisplay.Display,
fgDisplay.pDisplay.Screen
);
fgDisplay.ScreenHeightMM = DisplayHeightMM(
fgDisplay.pDisplay.Display,
fgDisplay.pDisplay.Screen
);
fgDisplay.pDisplay.Connection = ConnectionNumber( fgDisplay.pDisplay.Display );
/* Create the window deletion atom */
fgDisplay.pDisplay.DeleteWindow = fghGetAtom("WM_DELETE_WINDOW");
/* Create the state and full screen atoms */
fgDisplay.pDisplay.State = None;
fgDisplay.pDisplay.StateFullScreen = None;
if (fghNetWMSupported())
{
const Atom supported = fghGetAtom("_NET_SUPPORTED");
const Atom state = fghGetAtom("_NET_WM_STATE");
/* Check if the state hint is supported. */
if (fgHintPresent(fgDisplay.pDisplay.RootWindow, supported, state))
{
const Atom full_screen = fghGetAtom("_NET_WM_STATE_FULLSCREEN");
fgDisplay.pDisplay.State = state;
/* Check if the window manager supports full screen. */
/** Check "_NET_WM_ALLOWED_ACTIONS" on our window instead? **/
if (fgHintPresent(fgDisplay.pDisplay.RootWindow, supported, full_screen))
{
fgDisplay.pDisplay.StateFullScreen = full_screen;
}
}
}
fgState.Initialised = GL_TRUE;
atexit(fgDeinitialize);
/* InputDevice uses GlutTimerFunc(), so fgState.Initialised must be TRUE */
fgInitialiseInputDevices();
}
/*
* A call to this function should initialize all the display stuff...
*/
void fgPlatformInitialize( const char* displayName )
{
fgDisplay.pDisplay.Display = XOpenDisplay( displayName );
if( fgDisplay.pDisplay.Display == NULL )
fgError( "failed to open display '%s'", XDisplayName( displayName ) );
if ( fgState.XSyncSwitch )
XSynchronize(fgDisplay.pDisplay.Display, True);
#ifdef EGL_VERSION_1_0
fghPlatformInitializeEGL();
#else
if( !glXQueryExtension( fgDisplay.pDisplay.Display, NULL, NULL ) )
fgError( "OpenGL GLX extension not supported by display '%s'",
XDisplayName( displayName ) );
/* This forces AMD Catalyst drivers to initialize and register a shutdown
* function, which must be done before our own call to atexit to prevent
* a crash if glutMainLoop is not called or is not exited cleanly.
* (see bug #206)
*/
glXQueryExtensionsString( fgDisplay.pDisplay.Display,
DefaultScreen( fgDisplay.pDisplay.Display ));
#endif
fgDisplay.pDisplay.Screen = DefaultScreen( fgDisplay.pDisplay.Display );
fgDisplay.pDisplay.RootWindow = RootWindow(
fgDisplay.pDisplay.Display,
fgDisplay.pDisplay.Screen
);
fgDisplay.ScreenWidth = DisplayWidth(
fgDisplay.pDisplay.Display,
fgDisplay.pDisplay.Screen
);
fgDisplay.ScreenHeight = DisplayHeight(
fgDisplay.pDisplay.Display,
fgDisplay.pDisplay.Screen
);
fgDisplay.ScreenWidthMM = DisplayWidthMM(
fgDisplay.pDisplay.Display,
fgDisplay.pDisplay.Screen
);
fgDisplay.ScreenHeightMM = DisplayHeightMM(
fgDisplay.pDisplay.Display,
fgDisplay.pDisplay.Screen
);
fgDisplay.pDisplay.Connection = ConnectionNumber( fgDisplay.pDisplay.Display );
/* Create the window deletion atom */
fgDisplay.pDisplay.DeleteWindow = fghGetAtom("WM_DELETE_WINDOW");
/* Create the state and full screen atoms */
fgDisplay.pDisplay.State = None;
fgDisplay.pDisplay.StateFullScreen = None;
fgDisplay.pDisplay.NetWMPid = None;
fgDisplay.pDisplay.ClientMachine = None;
fgDisplay.pDisplay.NetWMSupported = fghNetWMSupported();
if (fgDisplay.pDisplay.NetWMSupported)
{
const Atom supported = fghGetAtom("_NET_SUPPORTED");
const Atom state = fghGetAtom("_NET_WM_STATE");
/* Check if the state hint is supported. */
if (fgHintPresent(fgDisplay.pDisplay.RootWindow, supported, state))
{
const Atom full_screen = fghGetAtom("_NET_WM_STATE_FULLSCREEN");
fgDisplay.pDisplay.State = state;
/* Check if the window manager supports full screen. */
/** Check "_NET_WM_ALLOWED_ACTIONS" on our window instead? **/
if (fgHintPresent(fgDisplay.pDisplay.RootWindow, supported, full_screen))
{
fgDisplay.pDisplay.StateFullScreen = full_screen;
}
}
fgDisplay.pDisplay.NetWMPid = fghGetAtom("_NET_WM_PID");
fgDisplay.pDisplay.ClientMachine = fghGetAtom("WM_CLIENT_MACHINE");
}
/* Get start time */
fgState.Time = fgSystemTime();
fgState.Initialised = GL_TRUE;
atexit(fgDeinitialize);
/* InputDevice uses GlutTimerFunc(), so fgState.Initialised must be TRUE */
fgInitialiseInputDevices();
}
