/*
* This private function creates a menu and adds it to the menus list
*/
SFG_Menu* fgCreateMenu( FGCBMenu menuCallback )
{
int x = 100, y = 100, w = 1, h = 1;
SFG_Window *current_window = fgStructure.CurrentWindow;
/* Have the menu object created */
SFG_Menu* menu = (SFG_Menu *)calloc( sizeof(SFG_Menu), 1 );
menu->ParentWindow = NULL;
/* Create a window for the menu to reside in. */
fgCreateWindow( NULL, "freeglut menu", GL_TRUE, x, y, GL_TRUE, w, h,
GL_FALSE, GL_TRUE );
menu->Window = fgStructure.CurrentWindow;
glutDisplayFunc( fgDisplayMenu );
glutHideWindow( ); /* Hide the window for now */
fgSetWindow( current_window );
/* Initialize the object properties: */
menu->ID = ++fgStructure.MenuID;
menu->Callback = menuCallback;
menu->ActiveEntry = NULL;
fgListInit( &menu->Entries );
fgListAppend( &fgStructure.Menus, &menu->Node );
/* Newly created menus implicitly become current ones */
fgStructure.CurrentMenu = menu;
return menu;
}
/*
* This function should be called on glutInit(). It will prepare the internal
* structure of freeglut to be used in the application. The structure will be
* destroyed using fgDestroyStructure() on glutMainLoop() return. In that
* case further use of freeglut should be preceeded with a glutInit() call.
*/
void fgCreateStructure( void )
{
/*
* We will be needing two lists: the first containing windows,
* and the second containing the user-defined menus.
* Also, no current window/menu is set, as none has been created yet.
*/
fgListInit(&fgStructure.Windows);
fgListInit(&fgStructure.Menus);
fgListInit(&fgStructure.WindowsToDestroy);
fgStructure.CurrentWindow = NULL;
fgStructure.CurrentMenu = NULL;
fgStructure.MenuContext = NULL;
fgStructure.GameModeWindow = NULL;
fgStructure.WindowID = 0;
fgStructure.MenuID = 0;
}
/*
* This private function creates, opens and adds to the hierarchy
* a freeglut window complete with OpenGL context and stuff...
*
* If parent is set to NULL, the window created will be a topmost one.
*/
SFG_Window* fgCreateWindow( SFG_Window* parent, const char* title,
GLboolean positionUse, int x, int y,
GLboolean sizeUse, int w, int h,
GLboolean gameMode, GLboolean isMenu )
{
/* Have the window object created */
SFG_Window *window = (SFG_Window *)calloc( sizeof(SFG_Window), 1 );
#if TARGET_HOST_UNIX_X11
window->Window.FBConfig = NULL;
#endif
fghClearCallBacks( window );
/* Initialize the object properties */
window->ID = ++fgStructure.WindowID;
#if TARGET_HOST_POSIX_X11
window->State.OldHeight = window->State.OldWidth = -1;
#endif
fgListInit( &window->Children );
if( parent )
{
fgListAppend( &parent->Children, &window->Node );
window->Parent = parent;
}
else
fgListAppend( &fgStructure.Windows, &window->Node );
/* Set the default mouse cursor and reset the modifiers value */
window->State.Cursor = GLUT_CURSOR_INHERIT;
window->IsMenu = isMenu;
window->State.IgnoreKeyRepeat = GL_FALSE;
window->State.KeyRepeating = GL_FALSE;
window->State.IsFullscreen = GL_FALSE;
/*
* Open the window now. The fgOpenWindow() function is system
* dependant, and resides in freeglut_window.c. Uses fgState.
*/
fgOpenWindow( window, title, positionUse, x, y, sizeUse, w, h, gameMode,
(GLboolean)(parent ? GL_TRUE : GL_FALSE) );
return window;
}
/*
* This private function creates, opens and adds to the hierarchy
* a freeglut window complete with OpenGL context and stuff...
*
* If parent is set to NULL, the window created will be a topmost one.
*/
SFG_Window* fgCreateWindow( SFG_Window* parent, const char* title,
GLboolean positionUse, int x, int y,
GLboolean sizeUse, int w, int h,
GLboolean gameMode, GLboolean isMenu )
{
/* Have the window object created */
SFG_Window *window = (SFG_Window *)calloc( 1, sizeof(SFG_Window) );
fgPlatformCreateWindow ( window );
fghClearCallBacks( window );
SET_WCB( *window, Reshape, fghDefaultReshape);
/* Initialize the object properties */
window->ID = ++fgStructure.WindowID;
fgListInit( &window->Children );
if( parent )
{
fgListAppend( &parent->Children, &window->Node );
window->Parent = parent;
}
else
fgListAppend( &fgStructure.Windows, &window->Node );
/* Set the default mouse cursor */
window->State.Cursor = GLUT_CURSOR_INHERIT;
/* Mark window as menu if a menu is to be created */
window->IsMenu = isMenu;
/*
* Open the window now. The fgOpenWindow() function is system
* dependant, and resides in freeglut_window.c. Uses fgState.
*/
fgOpenWindow( window, title, positionUse, x, y, sizeUse, w, h, gameMode,
(GLboolean)(parent ? GL_TRUE : GL_FALSE) );
return window;
}
/*
* 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;
}