/*
* This function destroys a window and all of its subwindows. Actually,
* another function, defined in freeglut_window.c is called, but this is
* a whole different story...
*/
void fgDestroyWindow( SFG_Window* window )
{
FREEGLUT_INTERNAL_ERROR_EXIT ( window, "Window destroy function called with null window",
"fgDestroyWindow" );
while( window->Children.First )
fgDestroyWindow( ( SFG_Window * )window->Children.First );
{
SFG_Window *activeWindow = fgStructure.CurrentWindow;
INVOKE_WCB( *window, Destroy, ( ) );
fgSetWindow( activeWindow );
}
if( window->Parent )
fgListRemove( &window->Parent->Children, &window->Node );
else
fgListRemove( &fgStructure.Windows, &window->Node );
if( window->ActiveMenu )
fgDeactivateMenu( window );
fghClearCallBacks( window );
fgCloseWindow( window );
free( window );
if( fgStructure.CurrentWindow == window )
fgStructure.CurrentWindow = NULL;
}
/*
* This function destroys a menu specified by the parameter. All menus
* and windows are updated to make sure no ill pointers hang around.
*/
void fgDestroyMenu( SFG_Menu* menu )
{
SFG_Window *window;
SFG_Menu *from;
FREEGLUT_INTERNAL_ERROR_EXIT ( menu, "Menu destroy function called with null menu",
"fgDestroyMenu" );
/* First of all, have all references to this menu removed from all windows: */
for( window = (SFG_Window *)fgStructure.Windows.First;
window;
window = (SFG_Window *)window->Node.Next )
fghRemoveMenuFromWindow( window, menu );
/* Now proceed with removing menu entries that lead to this menu */
for( from = ( SFG_Menu * )fgStructure.Menus.First;
from;
from = ( SFG_Menu * )from->Node.Next )
fghRemoveMenuFromMenu( from, menu );
/*
* If the programmer defined a destroy callback, call it
* A. Donev: But first make this the active menu
*/
if( menu->Destroy )
{
SFG_Menu *activeMenu=fgStructure.CurrentMenu;
fgStructure.CurrentMenu = menu;
menu->Destroy( );
fgStructure.CurrentMenu = activeMenu;
}
/*
* Now we are pretty sure the menu is not used anywhere
* and that we can remove all of its entries
*/
while( menu->Entries.First )
{
SFG_MenuEntry *entry = ( SFG_MenuEntry * ) menu->Entries.First;
fgListRemove( &menu->Entries, &entry->Node );
if( entry->Text )
free( entry->Text );
entry->Text = NULL;
free( entry );
}
if( fgStructure.CurrentWindow == menu->Window )
fgSetWindow( NULL );
fgDestroyWindow( menu->Window );
fgListRemove( &fgStructure.Menus, &menu->Node );
if( fgStructure.CurrentMenu == menu )
fgStructure.CurrentMenu = NULL;
free( menu );
}
/* Creates a timer and sets its callback */
void FGAPIENTRY glutTimerFunc( unsigned int timeOut, FGCBTimer callback, int timerID )
{
SFG_Timer *timer, *node;
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutTimerFunc" );
if( (timer = fgState.FreeTimers.Last) )
{
fgListRemove( &fgState.FreeTimers, &timer->Node );
}
else
{
if( ! (timer = malloc(sizeof(SFG_Timer))) )
fgError( "Fatal error: "
"Memory allocation failure in glutTimerFunc()" );
}
timer->Callback = callback;
timer->ID = timerID;
timer->TriggerTime = fgElapsedTime() + timeOut;
/* Insert such that timers are sorted by end-time */
for( node = fgState.Timers.First; node; node = node->Node.Next )
{
if( node->TriggerTime > timer->TriggerTime )
break;
}
fgListInsert( &fgState.Timers, &node->Node, &timer->Node );
}
/*
* Sets the Timer callback for the current window
*/
void FGAPIENTRY glutTimerFunc( unsigned int timeOut, void (* callback)( int ),
int timerID )
{
SFG_Timer *timer, *node;
glutes_assert_ready;
if( (timer = fgState.FreeTimers.Last) )
{
fgListRemove( &fgState.FreeTimers, &timer->Node );
}
else
{
if( ! (timer = malloc(sizeof(SFG_Timer))) )
fgError( "Fatal error: "
"Memory allocation failure in glutTimerFunc()\n" );
}
timer->Callback = callback;
timer->ID = timerID;
timer->TriggerTime = fgElapsedTime() + timeOut;
for( node = fgState.Timers.First; node; node = node->Node.Next )
{
if( node->TriggerTime > timer->TriggerTime )
break;
}
fgListInsert( &fgState.Timers, &node->Node, &timer->Node );
}
/*
* Function to close down all the windows in the "WindowsToDestroy" list
*/
void fgCloseWindows( )
{
while( fgStructure.WindowsToDestroy.First )
{
SFG_WindowList *window_ptr = fgStructure.WindowsToDestroy.First;
fgDestroyWindow( window_ptr->window );
fgListRemove( &fgStructure.WindowsToDestroy, &window_ptr->node );
free( window_ptr );
}
}
/*
* Check the global timers
*/
static void fghCheckTimers( void )
{
fg_time_t checkTime = fgElapsedTime( );
while( fgState.Timers.First )
{
SFG_Timer *timer = fgState.Timers.First;
if( timer->TriggerTime > checkTime )
/* Timers are sorted by triggerTime */
break;
fgListRemove( &fgState.Timers, &timer->Node );
fgListAppend( &fgState.FreeTimers, &timer->Node );
timer->Callback( timer->ID );
}
}
/*
* Removes the specified menu item from the current menu
*/
void FGAPIENTRY glutRemoveMenuItem( int item )
{
SFG_MenuEntry* menuEntry;
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutRemoveMenuItem" );
freeglut_return_if_fail( fgStructure.CurrentMenu );
/* Get n-th menu entry in the current menu, starting from one: */
menuEntry = fghFindMenuEntry( fgStructure.CurrentMenu, item );
freeglut_return_if_fail( menuEntry );
fgListRemove( &fgStructure.CurrentMenu->Entries, &menuEntry->Node );
if ( menuEntry->Text )
free( menuEntry->Text );
free( menuEntry );
fghCalculateMenuBoxSize( );
}
/*
* Removes the specified menu item from the current menu
*/
void FGAPIENTRY glutRemoveMenuItem( int item )
{
SFG_MenuEntry* menuEntry;
freeglut_assert_ready;
freeglut_return_if_fail( fgStructure.Menu );
/*
* Get n-th menu entry in the current menu, starting from one:
*/
menuEntry = fghFindMenuEntry( fgStructure.Menu, item );
freeglut_return_if_fail( menuEntry );
fgListRemove( &fgStructure.Menu->Entries, &menuEntry->Node );
if ( menuEntry->Text )
free( menuEntry->Text );
free( menuEntry );
fghCalculateMenuBoxSize( );
}
/*
* Perform the freeglut deinitialization...
*/
void fgDeinitialize( void )
{
SFG_Timer *timer;
if( !fgState.Initialised )
{
return;
}
/* If we're in game mode, we want to leave game mode */
if( fgStructure.GameModeWindow ) {
glutLeaveGameMode();
}
/* If there was a menu created, destroy the rendering context */
if( fgStructure.MenuContext )
{
fgPlatformDestroyContext (fgDisplay.pDisplay, fgStructure.MenuContext->MContext );
free( fgStructure.MenuContext );
fgStructure.MenuContext = NULL;
}
fgDestroyStructure( );
while( ( timer = fgState.Timers.First) )
{
fgListRemove( &fgState.Timers, &timer->Node );
free( timer );
}
while( ( timer = fgState.FreeTimers.First) )
{
fgListRemove( &fgState.FreeTimers, &timer->Node );
free( timer );
}
fgPlatformDeinitialiseInputDevices ();
fgState.MouseWheelTicks = 0;
fgState.MajorVersion = 1;
fgState.MinorVersion = 0;
fgState.ContextFlags = 0;
fgState.ContextProfile = 0;
fgState.Initialised = GL_FALSE;
fgState.Position.X = -1;
fgState.Position.Y = -1;
fgState.Position.Use = GL_FALSE;
fgState.Size.X = 300;
fgState.Size.Y = 300;
fgState.Size.Use = GL_TRUE;
fgState.DisplayMode = GLUT_RGBA | GLUT_SINGLE | GLUT_DEPTH;
fgState.DirectContext = GLUT_TRY_DIRECT_CONTEXT;
fgState.ForceIconic = GL_FALSE;
fgState.UseCurrentContext = GL_FALSE;
fgState.GLDebugSwitch = GL_FALSE;
fgState.XSyncSwitch = GL_FALSE;
fgState.ActionOnWindowClose = GLUT_ACTION_EXIT;
fgState.ExecState = GLUT_EXEC_STATE_INIT;
fgState.KeyRepeat = GLUT_KEY_REPEAT_ON;
fgState.Modifiers = INVALID_MODIFIERS;
fgState.GameModeSize.X = -1;
fgState.GameModeSize.Y = -1;
fgState.GameModeDepth = -1;
fgState.GameModeRefresh = -1;
fgListInit( &fgState.Timers );
fgListInit( &fgState.FreeTimers );
fgState.IdleCallback = NULL;
fgState.MenuStateCallback = ( FGCBMenuState )NULL;
fgState.MenuStatusCallback = ( FGCBMenuStatus )NULL;
fgState.SwapCount = 0;
fgState.SwapTime = 0;
fgState.FPSInterval = 0;
if( fgState.ProgramName )
{
free( fgState.ProgramName );
fgState.ProgramName = NULL;
}
fgPlatformCloseDisplay ();
fgState.Initialised = GL_FALSE;
}
/*
* Perform the freeglut deinitialization...
*/
void fgDeinitialize( void )
{
SFG_Timer *timer;
if( !fgState.Initialised )
{
fgWarning( "fgDeinitialize(): "
"no valid initialization has been performed" );
return;
}
/* fgState.Initialised = GL_FALSE; */
/*
* If there was a menu created, destroy the rendering context
*/
if( fgStructure.MenuContext )
{
free( fgStructure.MenuContext );
fgStructure.MenuContext = NULL;
}
fgDestroyStructure( );
while( (timer = fgState.Timers.First) )
{
fgListRemove( &fgState.Timers, &timer->Node );
free( timer );
}
while( (timer = fgState.FreeTimers.First) )
{
fgListRemove( &fgState.FreeTimers, &timer->Node );
free( timer );
}
#ifndef _WIN32_WCE
fgJoystickClose( );
#endif
fgState.Initialised = GL_FALSE;
fgState.Position.X = -1;
fgState.Position.Y = -1;
fgState.Position.Use = GL_FALSE;
fgState.Size.X = 240;
fgState.Size.Y = 320;
fgState.Size.Use = GL_TRUE;
fgState.DisplayMode = GLUT_RGBA | GLUT_SINGLE | GLUT_DEPTH;
fgState.ForceDirectContext = GL_FALSE;
fgState.TryDirectContext = GL_TRUE;
fgState.ForceIconic = GL_FALSE;
fgState.UseCurrentContext = GL_FALSE;
fgState.GLDebugSwitch = GL_FALSE;
fgState.XSyncSwitch = GL_FALSE;
fgState.ActionOnWindowClose = GLUT_ACTION_EXIT;
fgState.ExecState = GLUT_EXEC_STATE_INIT;
fgState.IgnoreKeyRepeat = GL_TRUE;
fgState.Modifiers = 0xffffffff;
fgState.GameModeSize.X = 240;
fgState.GameModeSize.Y = 320;
fgState.GameModeDepth = 16;
fgState.GameModeRefresh = 72;
fgState.Time.Set = GL_FALSE;
fgListInit( &fgState.Timers );
fgListInit( &fgState.FreeTimers );
fgState.IdleCallback = NULL;
fgState.MenuStateCallback = ( FGCBMenuState )NULL;
fgState.MenuStatusCallback = ( FGCBMenuStatus )NULL;
fgState.SwapCount = 0;
fgState.SwapTime = 0;
fgState.FPSInterval = 0;
if( fgState.ProgramName )
{
free( fgState.ProgramName );
fgState.ProgramName = NULL;
}
__glDestroy();
#if TARGET_HOST_UNIX_X11
/*
* Make sure all X-client data we have created will be destroyed on
* display closing
*/
XSetCloseDownMode( fgDisplay.Display, DestroyAll );
/*
* Close the display connection, destroying all windows we have
* created so far
*/
XCloseDisplay( fgDisplay.Display );
#endif
}
/*
* Perform the freeglut deinitialization...
*/
void fgDeinitialize( void )
{
SFG_Timer *timer;
if( !fgState.Initialised )
{
return;
}
/* If we're in game mode, we want to leave game mode */
if( fgStructure.GameModeWindow ) {
glutLeaveGameMode();
}
/* If there was a menu created, destroy the rendering context */
if( fgStructure.MenuContext )
{
#if TARGET_HOST_POSIX_X11
/* Note that the MVisualInfo is not owned by the MenuContext! */
glXDestroyContext( fgDisplay.Display, fgStructure.MenuContext->MContext );
#endif
free( fgStructure.MenuContext );
fgStructure.MenuContext = NULL;
}
fgDestroyStructure( );
while( ( timer = fgState.Timers.First) )
{
fgListRemove( &fgState.Timers, &timer->Node );
free( timer );
}
while( ( timer = fgState.FreeTimers.First) )
{
fgListRemove( &fgState.FreeTimers, &timer->Node );
free( timer );
}
#if !defined(_WIN32_WCE)
if ( fgState.JoysticksInitialised )
fgJoystickClose( );
if ( fgState.InputDevsInitialised )
fgInputDeviceClose( );
#endif /* !defined(_WIN32_WCE) */
fgState.JoysticksInitialised = GL_FALSE;
fgState.InputDevsInitialised = GL_FALSE;
fgState.MouseWheelTicks = 0;
fgState.MajorVersion = 1;
fgState.MinorVersion = 0;
fgState.ContextFlags = 0;
fgState.ContextProfile = 0;
fgState.Initialised = GL_FALSE;
fgState.Position.X = -1;
fgState.Position.Y = -1;
fgState.Position.Use = GL_FALSE;
fgState.Size.X = 300;
fgState.Size.Y = 300;
fgState.Size.Use = GL_TRUE;
fgState.DisplayMode = GLUT_RGBA | GLUT_SINGLE | GLUT_DEPTH;
fgState.DirectContext = GLUT_TRY_DIRECT_CONTEXT;
fgState.ForceIconic = GL_FALSE;
fgState.UseCurrentContext = GL_FALSE;
fgState.GLDebugSwitch = GL_FALSE;
fgState.XSyncSwitch = GL_FALSE;
fgState.ActionOnWindowClose = GLUT_ACTION_EXIT;
fgState.ExecState = GLUT_EXEC_STATE_INIT;
fgState.KeyRepeat = GLUT_KEY_REPEAT_ON;
fgState.Modifiers = INVALID_MODIFIERS;
fgState.GameModeSize.X = -1;
fgState.GameModeSize.Y = -1;
fgState.GameModeDepth = -1;
fgState.GameModeRefresh = -1;
fgListInit( &fgState.Timers );
fgListInit( &fgState.FreeTimers );
fgState.IdleCallback = NULL;
fgState.MenuStateCallback = ( FGCBMenuState )NULL;
fgState.MenuStatusCallback = ( FGCBMenuStatus )NULL;
fgState.SwapCount = 0;
fgState.SwapTime = 0;
fgState.FPSInterval = 0;
if( fgState.ProgramName )
{
free( fgState.ProgramName );
fgState.ProgramName = NULL;
}
#if TARGET_HOST_POSIX_X11
/*
* Make sure all X-client data we have created will be destroyed on
* display closing
*/
XSetCloseDownMode( fgDisplay.Display, DestroyAll );
/*
* Close the display connection, destroying all windows we have
* created so far
*/
XCloseDisplay( fgDisplay.Display );
#elif TARGET_HOST_MS_WINDOWS
if( fgDisplay.DisplayName )
{
free( fgDisplay.DisplayName );
fgDisplay.DisplayName = NULL;
}
/* Reset the timer granularity */
timeEndPeriod ( 1 );
#endif
fgState.Initialised = GL_FALSE;
}
