4 * The windows message processing methods.
6 * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
7 * Written by Pawel W. Olszta, <olszta@sourceforge.net>
8 * Creation date: Fri Dec 3 1999
10 * Permission is hereby granted, free of charge, to any person obtaining a
11 * copy of this software and associated documentation files (the "Software"),
12 * to deal in the Software without restriction, including without limitation
13 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
14 * and/or sell copies of the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the following conditions:
17 * The above copyright notice and this permission notice shall be included
18 * in all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
24 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
25 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
32 #define G_LOG_DOMAIN "freeglut-main"
34 #include "../include/GL/freeglut.h"
35 #include "freeglut_internal.h"
38 #if TARGET_HOST_UNIX_X11
39 #include <sys/types.h>
44 #elif TARGET_HOST_WIN32
48 #define MAX(a,b) (((a)>(b)) ? (a) : (b))
52 #define MIN(a,b) (((a)<(b)) ? (a) : (b))
57 * TODO BEFORE THE STABLE RELEASE:
59 * There are some issues concerning window redrawing under X11, and maybe
60 * some events are not handled. The Win32 version lacks some more features,
61 * but seems acceptable for not demanding purposes.
63 * Need to investigate why the X11 version breaks out with an error when
64 * closing a window (using the window manager, not glutDestroyWindow)...
67 /* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
70 * Calls a window's redraw method. This is used when
71 * a redraw is forced by the incoming window messages.
74 static void fghRedrawWindowByHandle
75 #if TARGET_HOST_UNIX_X11
77 #elif TARGET_HOST_WIN32
82 * Find the window we have to redraw...
84 SFG_Window* window = fgWindowByHandle( handle );
85 freeglut_return_if_fail( window != NULL );
88 * Check if there is a display callback hooked to it
90 freeglut_return_if_fail( window->Callbacks.Display != NULL );
93 * Return if the window is not visible
95 freeglut_return_if_fail( window->State.Visible == TRUE );
98 * Set the window as the current one.
100 fgSetWindow( window );
103 * Do not exagerate with the redisplaying
105 window->State.Redisplay = FALSE;
108 * Have the callback executed now. The buffers should
109 * be swapped by the glutSwapBuffers() execution inside
110 * the callback itself.
113 window->Callbacks.Display();
117 * Handle a window configuration change. When no reshape
118 * callback is hooked, the viewport size is updated to
119 * match the new window size.
121 static void fghReshapeWindowByHandle
122 #if TARGET_HOST_UNIX_X11
123 ( Window handle, int width, int height )
124 #elif TARGET_HOST_WIN32
125 ( HWND handle, int width, int height )
128 SFG_Window *current_window = fgStructure.Window ;
131 * Find the window that received the reshape event
133 SFG_Window* window = fgWindowByHandle( handle );
134 freeglut_return_if_fail( window != NULL );
137 * Remember about setting the current window...
139 fgSetWindow( window );
142 * Check if there is a reshape callback hooked
144 if( window->Callbacks.Reshape != NULL )
147 * OKi, have it called immediately
149 window->Callbacks.Reshape( width, height );
154 * Otherwise just resize the viewport
156 glViewport( 0, 0, width, height );
160 * Force a window redraw. In Windows at least this is only a partial solution: if the
161 * window is increasing in size in either dimension, the already-drawn part does not get
162 * drawn again and things look funny. But without this we get this bad behaviour whenever
163 * we resize the window.
165 window->State.Redisplay = TRUE ;
168 * If this is a menu, restore the active window
170 if ( window->IsMenu )
171 fgSetWindow ( current_window ) ;
175 * A static helper function to execute display callback for a window
177 static void fghcbDisplayWindow( SFG_Window *window, SFG_Enumerator *enumerator )
179 #if TARGET_HOST_UNIX_X11
181 * Check if there is an idle callback hooked
183 if( (window->Callbacks.Display != NULL) &&
184 (window->State.Redisplay == TRUE) &&
185 (window->State.Visible == TRUE) )
187 SFG_Window *current_window = fgStructure.Window ;
190 * OKi, this is the case: have the window set as the current one
192 fgSetWindow( window );
195 * Do not exagerate with the redisplaying
197 window->State.Redisplay = FALSE;
200 * And execute the display callback immediately after
202 window->Callbacks.Display();
204 fgSetWindow ( current_window ) ;
207 #elif TARGET_HOST_WIN32
210 * Do we need to explicitly resize the window?
212 if( window->State.NeedToResize )
214 SFG_Window *current_window = fgStructure.Window ;
216 fgSetWindow( window );
218 fghReshapeWindowByHandle(
219 window->Window.Handle,
220 glutGet( GLUT_WINDOW_WIDTH ),
221 glutGet( GLUT_WINDOW_HEIGHT )
225 * Never ever do that again:
227 window->State.NeedToResize = FALSE;
229 fgSetWindow ( current_window ) ;
233 * This is done in a bit different way under Windows
235 if( (window->Callbacks.Display != NULL) &&
236 (window->State.Redisplay == TRUE) &&
237 (window->State.Visible == TRUE) )
240 * Do not exagerate with the redisplaying
242 window->State.Redisplay = FALSE;
245 window->Window.Handle, NULL, NULL,
246 RDW_NOERASE | RDW_INTERNALPAINT | RDW_INVALIDATE | RDW_UPDATENOW
253 * Process this window's children (if any)
255 fgEnumSubWindows( window, fghcbDisplayWindow, enumerator );
259 * Make all windows perform a display call
261 static void fghDisplayAll( void )
263 SFG_Enumerator enumerator;
266 * Uses a method very similiar for fgWindowByHandle...
268 enumerator.found = FALSE;
269 enumerator.data = NULL;
272 * Start the enumeration now:
274 fgEnumWindows( fghcbDisplayWindow, &enumerator );
278 * Window enumerator callback to check for the joystick polling code
280 static void fghcbCheckJoystickPolls( SFG_Window *window, SFG_Enumerator *enumerator )
282 long int checkTime = fgElapsedTime();
285 * Check if actually need to do the poll for the currently enumerated window:
287 if( window->State.JoystickLastPoll + window->State.JoystickPollRate <= checkTime )
290 * Yeah, that's it. Poll the joystick...
292 fgJoystickPollWindow( window );
295 * ...and reset the polling counters:
297 window->State.JoystickLastPoll = checkTime;
301 * Process this window's children (if any)
303 fgEnumSubWindows( window, fghcbCheckJoystickPolls, enumerator );
307 * Check all windows for joystick polling
309 static void fghCheckJoystickPolls( void )
311 SFG_Enumerator enumerator;
314 * Uses a method very similiar for fgWindowByHandle...
316 enumerator.found = FALSE;
317 enumerator.data = NULL;
320 * Start the enumeration now:
322 fgEnumWindows( fghcbCheckJoystickPolls, &enumerator );
326 * Check the global timers
328 static void fghCheckTimers( void )
330 long checkTime = fgElapsedTime();
331 SFG_Timer *timer, *next;
334 fgListInit(&timedOut);
337 * For every timer that is waiting for triggering
339 for( timer = (SFG_Timer *)fgState.Timers.First; timer; timer = (SFG_Timer *)next )
341 next = (SFG_Timer *)timer->Node.Next;
344 * Check for the timeout:
346 if( timer->TriggerTime <= checkTime )
349 * Add the timer to the timed out timers list
351 fgListRemove( &fgState.Timers, &timer->Node );
352 fgListAppend( &timedOut, &timer->Node );
357 * Now feel free to execute all the hooked and timed out timer callbacks
358 * And delete the timed out timers...
360 while ( (timer = (SFG_Timer *)timedOut.First) )
362 if( timer->Callback != NULL )
363 timer->Callback( timer->ID );
364 fgListRemove( &timedOut, &timer->Node );
373 long fgElapsedTime( void )
375 #if TARGET_HOST_UNIX_X11
379 gettimeofday( &now, NULL );
381 elapsed = (now.tv_usec - fgState.Time.Value.tv_usec) / 1000;
382 elapsed += (now.tv_sec - fgState.Time.Value.tv_sec) * 1000;
385 #elif TARGET_HOST_WIN32
386 return (timeGetTime() - fgState.Time.Value);
393 void fgError( const char *fmt, ... )
399 fprintf( stderr, "freeglut: ");
400 vfprintf( stderr, fmt, ap );
401 fprintf( stderr, "\n" );
408 void fgWarning( const char *fmt, ... )
414 fprintf( stderr, "freeglut: ");
415 vfprintf( stderr, fmt, ap );
416 fprintf( stderr, "\n" );
422 * Indicates whether Joystick events are being used by ANY window.
424 * The current mechanism is to walk all of the windows and ask if
425 * there is a joystick callback. Certainly in some cases, maybe
426 * in all cases, the joystick is attached to the system and accessed
427 * from ONE point by GLUT/freeglut, so this is not the right way,
428 * in general, to do this. However, the Joystick code is segregated
429 * in its own little world, so we can't access the information that
430 * we need in order to do that nicely.
433 * * Store Joystick data into freeglut global state.
434 * * Provide NON-static functions or data from Joystick *.c file.
436 * Basically, the RIGHT way to do this requires knowing something
437 * about the Joystick. Right now, the Joystick code is behind
441 static void fgCheckJoystickCallback( SFG_Window* w, SFG_Enumerator* e)
443 if( w->Callbacks.Joystick )
448 fgEnumSubWindows( w, fgCheckJoystickCallback, e );
450 static int fgHaveJoystick( void )
452 SFG_Enumerator enumerator;
453 enumerator.found = FALSE;
454 enumerator.data = NULL;
455 fgEnumWindows( fgCheckJoystickCallback, &enumerator );
456 return !!enumerator.data;
458 static void fgHavePendingRedisplaysCallback( SFG_Window* w, SFG_Enumerator* e)
460 if( w->State.Redisplay )
465 fgEnumSubWindows( w, fgHavePendingRedisplaysCallback, e );
467 static int fgHavePendingRedisplays (void)
469 SFG_Enumerator enumerator;
470 enumerator.found = FALSE;
471 enumerator.data = NULL;
472 fgEnumWindows( fgHavePendingRedisplaysCallback, &enumerator );
473 return !!enumerator.data;
476 * Indicates whether there are any outstanding timers.
478 static int fgHaveTimers( void )
480 return !!fgState.Timers.First;
483 * Returns the number of GLUT ticks (milliseconds) till the next timer event.
485 static long fgNextTimer( void )
487 long now = fgElapsedTime();
491 for( timer = (SFG_Timer *)fgState.Timers.First;
493 timer = (SFG_Timer *)timer->Node.Next )
494 ret = MIN( ret, MAX( 0, (timer->TriggerTime) - now ) );
499 * Does the magic required to relinquish the CPU until something interesting
502 static void fgSleepForEvents( void )
504 #if TARGET_HOST_UNIX_X11
511 if( fgState.IdleCallback ||
512 fgHavePendingRedisplays() )
514 socket = ConnectionNumber( fgDisplay.Display );
516 FD_SET( socket, &fdset );
518 msec = fgNextTimer();
519 if( fgHaveJoystick() )
520 msec = MIN( msec, 10 );
522 wait.tv_sec = msec / 1000;
523 wait.tv_usec = (msec % 1000) * 1000;
524 err = select( socket+1, &fdset, NULL, NULL, &wait );
527 printf( "freeglut select() error: %d\n", errno );
529 #elif TARGET_HOST_WIN32
533 /* -- INTERFACE FUNCTIONS -------------------------------------------------- */
536 * Executes a single iteration in the freeglut processing loop.
538 void FGAPIENTRY glutMainLoopEvent( void )
540 #if TARGET_HOST_UNIX_X11
546 * This code was repeated constantly, so here it goes into a definition:
548 # define GETWINDOW(a) window = fgWindowByHandle( event.a.window );if( window == NULL ) break;
549 # define GETMOUSE(a) window->State.MouseX = event.a.x; window->State.MouseY = event.a.y;
552 * Make sure the display has been created etc.
554 freeglut_assert_ready;
557 * Do we have any event messages pending?
559 while( XPending( fgDisplay.Display ) )
562 * Grab the next event to be processed...
564 XNextEvent( fgDisplay.Display, &event );
567 * Check the event's type
573 * The window creation confirmation
579 * This is sent to confirm the XDestroyWindow call.
582 * Call the window closure callback, remove from the structure, etc.
584 /* fgAddToWindowDestroyList ( window, FALSE ); */
590 * Destroy the window when the WM_DELETE_WINDOW message arrives
592 if( (Atom) event.xclient.data.l[ 0 ] == fgDisplay.DeleteWindow )
594 GETWINDOW( xclient );
597 * Call the XWindows functions to close the window
599 fgCloseWindow ( window ) ;
602 * Call the window closure callback, remove from the structure, etc.
604 fgAddToWindowDestroyList ( window, FALSE );
610 * A window of ours has been unmapped...
616 * We are too dumb to process partial exposes...
618 if( event.xexpose.count == 0 )
619 fghRedrawWindowByHandle( event.xexpose.window );
622 case ConfigureNotify:
624 * The window gets resized
626 fghReshapeWindowByHandle(
627 event.xconfigure.window,
628 event.xconfigure.width,
629 event.xconfigure.height
635 * Have the client's keyboard knowledge updated (xlib.ps,
636 * page 206, says that's a good thing to do)
638 XRefreshKeyboardMapping( (XMappingEvent *) &event );
641 case VisibilityNotify:
644 * The window's visiblity might have changed
646 GETWINDOW( xvisibility );
649 * Break now if no window status callback has been hooked to that window
651 if( window->Callbacks.WindowStatus == NULL )
655 * We're going to send a callback to a window. Make it current.
657 fgSetWindow( window );
660 * Sending this event, the X server can notify us that the window has just
661 * acquired one of the three possible visibility states: VisibilityUnobscured,
662 * VisibilityPartiallyObscured or VisibilityFullyObscured
664 switch( event.xvisibility.state )
666 case VisibilityUnobscured:
668 * We are fully visible...
670 window->Callbacks.WindowStatus( GLUT_FULLY_RETAINED );
671 window->State.Visible = TRUE;
674 case VisibilityPartiallyObscured:
676 * The window is partially visible
678 window->Callbacks.WindowStatus( GLUT_PARTIALLY_RETAINED );
679 window->State.Visible = TRUE;
682 case VisibilityFullyObscured:
684 * The window is totally obscured
686 window->Callbacks.WindowStatus( GLUT_FULLY_COVERED );
687 window->State.Visible = FALSE;
696 * Mouse is over one of our windows
698 GETWINDOW( xcrossing ); GETMOUSE( xcrossing );
701 * Is there an entry callback hooked to the window?
703 if( window->Callbacks.Entry != NULL )
706 * Set the current window
708 fgSetWindow ( window ) ;
711 * Yeah. Notify the window about having the mouse cursor over
713 window->Callbacks.Entry( GLUT_ENTERED );
721 * Mouse is no longer over one of our windows
723 GETWINDOW( xcrossing ); GETMOUSE( xcrossing );
726 * Is there an entry callback hooked to the window?
728 if( window->Callbacks.Entry != NULL )
731 * Set the current window
733 fgSetWindow ( window ) ;
736 * Yeah. Notify the window about having the mouse cursor over
738 window->Callbacks.Entry( GLUT_LEFT );
746 * The mouse cursor was moved...
748 GETWINDOW( xmotion ); GETMOUSE( xmotion );
751 * Fallback if there's an active menu hooked to this window
753 if( window->ActiveMenu != NULL )
756 * Let's make the window redraw as a result of the mouse motion.
758 window->State.Redisplay = TRUE ;
761 * Since the window is a menu, make the parent window current
763 fgSetWindow ( window->ActiveMenu->ParentWindow ) ;
769 * What kind of a movement was it?
771 if( (event.xmotion.state & Button1Mask) || (event.xmotion.state & Button2Mask) ||
772 (event.xmotion.state & Button3Mask) || (event.xmotion.state & Button4Mask) ||
773 (event.xmotion.state & Button5Mask) )
776 * A mouse button was pressed during the movement...
777 * Is there a motion callback hooked to the window?
779 if( window->Callbacks.Motion != NULL )
782 * Set the current window
784 fgSetWindow ( window ) ;
787 * Yup. Have it executed immediately
789 window->Callbacks.Motion( event.xmotion.x, event.xmotion.y );
795 * Otherwise it was a passive movement...
797 if( window->Callbacks.Passive != NULL )
800 * Set the current window
802 fgSetWindow ( window ) ;
805 * That's right, and there is a passive callback, too.
807 window->Callbacks.Passive( event.xmotion.x, event.xmotion.y );
816 GLboolean pressed = TRUE ;
819 if ( event.type == ButtonRelease ) pressed = FALSE ;
822 * A mouse button has been pressed or released. Traditionally,
823 * break if the window was found within the freeglut structures.
825 GETWINDOW( xbutton ); GETMOUSE( xbutton );
828 * GLUT API assumes that you can't have more than three mouse buttons, so:
830 switch( event.xbutton.button )
833 * WARNING: this might be wrong, if we only have two mouse buttons,
834 * Button2 might mean the right button, isn't that right?
836 case Button1: button = GLUT_LEFT_BUTTON; break;
837 case Button2: button = GLUT_MIDDLE_BUTTON; break;
838 case Button3: button = GLUT_RIGHT_BUTTON; break;
839 default: button = -1; break;
843 * Skip the unwanted mouse buttons...
849 * Do not execute the application's mouse callback if a menu is hooked to this button.
850 * In that case an appropriate private call should be generated.
851 * Near as I can tell, this is the menu behaviour:
852 * - Down-click the menu button, menu not active: activate the menu with its upper left-hand corner at the mouse location.
853 * - Down-click any button outside the menu, menu active: deactivate the menu
854 * - Down-click any button inside the menu, menu active: select the menu entry and deactivate the menu
855 * - Up-click the menu button, menu not active: nothing happens
856 * - Up-click the menu button outside the menu, menu active: nothing happens
857 * - Up-click the menu button inside the menu, menu active: select the menu entry and deactivate the menu
859 if ( window->ActiveMenu != NULL ) /* Window has an active menu, it absorbs any mouse click */
861 if ( fgCheckActiveMenu ( window, window->ActiveMenu ) == TRUE ) /* Inside the menu, invoke the callback and deactivate the menu*/
863 /* Save the current window and menu and set the current window to the window whose menu this is */
864 SFG_Window *save_window = fgStructure.Window ;
865 SFG_Menu *save_menu = fgStructure.Menu ;
866 SFG_Window *parent_window = window->ActiveMenu->ParentWindow ;
867 fgSetWindow ( window ) ;
868 fgStructure.Menu = window->ActiveMenu ;
870 /* Execute the menu callback */
871 fgExecuteMenuCallback ( window->ActiveMenu ) ;
872 fgDeactivateMenu ( parent_window ) ;
874 /* Restore the current window and menu */
875 fgSetWindow ( save_window ) ;
876 fgStructure.Menu = save_menu ;
878 else /* Outside the menu, deactivate the menu if it's a downclick */
880 if ( pressed == TRUE ) fgDeactivateMenu ( window->ActiveMenu->ParentWindow ) ;
884 * Let's make the window redraw as a result of the mouse click and menu activity.
886 window->State.Redisplay = TRUE ;
892 * No active menu, let's check whether we need to activate one.
894 if ( ( window->Menu[ button ] != NULL ) && ( pressed == TRUE ) )
897 * Let's make the window redraw as a result of the mouse click.
899 window->State.Redisplay = TRUE ;
902 * Set the current window
904 fgSetWindow( window );
907 * Activate the appropriate menu structure...
909 fgActivateMenu( window, button );
915 * Check if there is a mouse callback hooked to the window
917 if( window->Callbacks.Mouse == NULL )
921 * Set the current window
923 fgSetWindow ( window );
926 * Remember the current modifiers state
929 if (event.xbutton.state & (ShiftMask|LockMask))
930 modifiers |= GLUT_ACTIVE_SHIFT;
931 if (event.xbutton.state & ControlMask)
932 modifiers |= GLUT_ACTIVE_CTRL;
933 if (event.xbutton.state & Mod1Mask)
934 modifiers |= GLUT_ACTIVE_ALT;
935 fgStructure.Window->State.Modifiers = modifiers;
938 * Finally execute the mouse callback
940 fgStructure.Window->Callbacks.Mouse(
942 event.type == ButtonPress ? GLUT_DOWN : GLUT_UP,
948 * Trash the modifiers state
950 fgStructure.Window->State.Modifiers = 0xffffffff;
957 FGCBkeyboard keyboard_cb;
958 FGCBspecial special_cb;
961 * A key has been pressed, find the window that had the focus:
963 GETWINDOW( xkey ); GETMOUSE( xkey );
965 if( event.type == KeyPress )
967 keyboard_cb = window->Callbacks.Keyboard;
968 special_cb = window->Callbacks.Special;
972 keyboard_cb = window->Callbacks.KeyboardUp;
973 special_cb = window->Callbacks.SpecialUp;
977 * Is there a keyboard/special callback hooked for this window?
979 if( (keyboard_cb != NULL) || (special_cb != NULL) )
981 XComposeStatus composeStatus;
982 char asciiCode[ 32 ];
987 * Check for the ASCII/KeySym codes associated with the event:
989 len = XLookupString( &event.xkey, asciiCode, sizeof(asciiCode), &keySym, &composeStatus );
992 * GLUT API tells us to have two separate callbacks...
997 * ...one for the ASCII translateable keypresses...
999 if( keyboard_cb != NULL )
1002 * Set the current window
1004 fgSetWindow( window );
1007 * Remember the current modifiers state
1010 if (event.xkey.state & (ShiftMask|LockMask))
1011 modifiers |= GLUT_ACTIVE_SHIFT;
1012 if (event.xkey.state & ControlMask)
1013 modifiers |= GLUT_ACTIVE_CTRL;
1014 if (event.xkey.state & Mod1Mask)
1015 modifiers |= GLUT_ACTIVE_ALT;
1016 window->State.Modifiers = modifiers;
1019 * Execute the callback
1021 keyboard_cb( asciiCode[ 0 ], event.xkey.x, event.xkey.y );
1024 * Trash the modifiers state
1026 window->State.Modifiers = 0xffffffff;
1034 * ...and one for all the others, which need to be translated to GLUT_KEY_Xs...
1039 * First the function keys come:
1041 case XK_F1: special = GLUT_KEY_F1; break;
1042 case XK_F2: special = GLUT_KEY_F2; break;
1043 case XK_F3: special = GLUT_KEY_F3; break;
1044 case XK_F4: special = GLUT_KEY_F4; break;
1045 case XK_F5: special = GLUT_KEY_F5; break;
1046 case XK_F6: special = GLUT_KEY_F6; break;
1047 case XK_F7: special = GLUT_KEY_F7; break;
1048 case XK_F8: special = GLUT_KEY_F8; break;
1049 case XK_F9: special = GLUT_KEY_F9; break;
1050 case XK_F10: special = GLUT_KEY_F10; break;
1051 case XK_F11: special = GLUT_KEY_F11; break;
1052 case XK_F12: special = GLUT_KEY_F12; break;
1055 * Then the arrows and stuff:
1057 case XK_Left: special = GLUT_KEY_LEFT; break;
1058 case XK_Right: special = GLUT_KEY_RIGHT; break;
1059 case XK_Up: special = GLUT_KEY_UP; break;
1060 case XK_Down: special = GLUT_KEY_DOWN; break;
1063 case XK_Prior: special = GLUT_KEY_PAGE_UP; break;
1065 case XK_Next: special = GLUT_KEY_PAGE_DOWN; break;
1067 case XK_Home: special = GLUT_KEY_HOME; break;
1069 case XK_End: special = GLUT_KEY_END; break;
1071 case XK_Insert: special = GLUT_KEY_INSERT; break;
1075 * Execute the callback (if one has been specified),
1076 * given that the special code seems to be valid...
1078 if( (special_cb != NULL) && (special != -1) )
1081 * Set the current window
1083 fgSetWindow( window );
1086 * Remember the current modifiers state
1089 if (event.xkey.state & (ShiftMask|LockMask))
1090 modifiers |= GLUT_ACTIVE_SHIFT;
1091 if (event.xkey.state & ControlMask)
1092 modifiers |= GLUT_ACTIVE_CTRL;
1093 if (event.xkey.state & Mod1Mask)
1094 modifiers |= GLUT_ACTIVE_ALT;
1095 window->State.Modifiers = modifiers;
1097 special_cb( special, event.xkey.x, event.xkey.y );
1100 * Trash the modifiers state
1102 window->State.Modifiers = 0xffffffff;
1113 * Have all the timers checked.
1118 * Poll the joystick and notify all windows that want to be notified...
1120 fghCheckJoystickPolls();
1123 * No messages in the queue, which means we are idling...
1125 if( fgState.IdleCallback != NULL )
1126 fgState.IdleCallback();
1129 * Remember about displaying all the windows that have
1130 * been marked for a redisplay (possibly in the idle call):
1135 #elif TARGET_HOST_WIN32
1140 * The windows processing is considerably smaller
1142 while( PeekMessage( &stMsg, NULL, 0, 0, PM_NOREMOVE ) )
1145 * Grab the message now, checking for WM_QUIT
1147 if( GetMessage( &stMsg, NULL, 0, 0 ) == 0 )
1148 fgState.ExecState = GLUT_EXEC_STATE_STOP ;
1151 * Translate virtual-key messages and send them to the window...
1153 TranslateMessage( &stMsg );
1154 DispatchMessage( &stMsg );
1159 * Have all the timers checked.
1164 * Poll the joystick and notify all windows that want to be notified...
1166 fghCheckJoystickPolls();
1169 * No messages in the queue, which means we are idling...
1171 if( fgState.IdleCallback != NULL )
1172 fgState.IdleCallback();
1175 * Remember about displaying all the windows that have
1176 * been marked for a redisplay (possibly in the idle call):
1183 * If an event caused a window to be closed, do the actual closing here
1189 * Enters the freeglut processing loop. Stays until the "ExecState" changes to "GLUT_EXEC_STATE_STOP".
1191 void FGAPIENTRY glutMainLoop( void )
1193 #if TARGET_HOST_WIN32
1194 SFG_Window *window = (SFG_Window *)fgStructure.Windows.First ;
1198 * Make sure the display has been created etc.
1200 freeglut_assert_ready;
1202 #if TARGET_HOST_WIN32
1204 * Processing before the main loop: If there is a window which is open and which
1205 * has a visibility callback, call it. I know this is an ugly hack, but I'm not sure
1206 * what else to do about it. Ideally we should leave something uninitialized in the
1207 * create window code and initialize it in the main loop, and have that initialization
1208 * create a "WM_ACTIVATE" message. Then we would put the visibility callback code in
1209 * the "case WM_ACTIVATE" block below. - John Fay -- 10/24/02
1211 while ( window != NULL )
1213 if ( window->Callbacks.Visibility != NULL )
1215 SFG_Window *current_window = fgStructure.Window ;
1218 * Set the current window
1220 fgSetWindow( window );
1222 window->Callbacks.Visibility ( window->State.Visible ) ;
1225 * Restore the current window
1227 fgSetWindow( current_window );
1230 window = (SFG_Window *)window->Node.Next ;
1235 * Set freeglut to be running
1237 fgState.ExecState = GLUT_EXEC_STATE_RUNNING ;
1240 * Enter the main loop itself. Inside the loop, process events and check for loop exit.
1242 while ( fgState.ExecState == GLUT_EXEC_STATE_RUNNING )
1244 glutMainLoopEvent () ;
1247 * If there are no more windows open, stop execution
1249 if ( fgStructure.Windows.First == NULL )
1250 fgState.ExecState = GLUT_EXEC_STATE_STOP ;
1256 fgExecutionState execState = fgState.ActionOnWindowClose;
1259 * When this loop terminates, destroy the display, state and structure
1260 * of a freeglut session, so that another glutInit() call can happen
1265 * Check whether we return to the calling program or simply exit
1267 if ( execState == GLUT_ACTION_EXIT )
1273 * Leaves the freeglut processing loop.
1275 void FGAPIENTRY glutLeaveMainLoop( void )
1277 fgState.ExecState = GLUT_EXEC_STATE_STOP ;
1281 * The window procedure for handling Win32 events
1283 #if TARGET_HOST_WIN32
1284 LRESULT CALLBACK fgWindowProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
1286 SFG_Window* window = fgWindowByHandle( hWnd );
1290 if ( ( window == NULL ) && ( uMsg != WM_CREATE ) )
1291 return( DefWindowProc( hWnd, uMsg, wParam, lParam ) );
1293 /* printf ( "Window %3d message <%04x> %12d %12d\n", window?window->ID:0, uMsg, wParam, lParam ) ; */
1295 * Check what type of message are we receiving
1301 * The window structure is passed as the creation structure paramter...
1303 window = (SFG_Window *) (((LPCREATESTRUCT) lParam)->lpCreateParams);
1304 assert( window != NULL );
1307 * We can safely store the window's handle now:
1309 window->Window.Handle = hWnd;
1312 * Get the window's device context
1314 window->Window.Device = GetDC( hWnd );
1317 * Create or get the OpenGL rendering context now
1319 if ( fgState.BuildingAMenu )
1322 * Setup the pixel format of our window
1324 unsigned int current_DisplayMode = fgState.DisplayMode ;
1325 fgState.DisplayMode = GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH ;
1326 fgSetupPixelFormat( window, FALSE, PFD_MAIN_PLANE );
1327 fgState.DisplayMode = current_DisplayMode ;
1330 * If there isn't already an OpenGL rendering context for menu windows, make one
1332 if ( !fgStructure.MenuContext )
1334 fgStructure.MenuContext = (SFG_MenuContext *)malloc ( sizeof(SFG_MenuContext) ) ;
1335 fgStructure.MenuContext->Context = wglCreateContext( window->Window.Device );
1338 wglMakeCurrent ( window->Window.Device, fgStructure.MenuContext->Context ) ;
1340 /* window->Window.Context = wglGetCurrentContext () ; */
1341 window->Window.Context = wglCreateContext( window->Window.Device );
1346 * Setup the pixel format of our window
1348 fgSetupPixelFormat( window, FALSE, PFD_MAIN_PLANE );
1350 if ( fgState.UseCurrentContext == TRUE )
1352 window->Window.Context = wglGetCurrentContext();
1353 if ( ! window->Window.Context )
1354 window->Window.Context = wglCreateContext( window->Window.Device );
1357 window->Window.Context = wglCreateContext( window->Window.Device );
1361 * Still, we'll be needing to explicitly resize the window
1363 window->State.NeedToResize = TRUE;
1366 * Finally, have the window's device context released
1368 ReleaseDC( window->Window.Handle, window->Window.Device );
1373 * We got resized... But check if the window has been already added...
1375 fghReshapeWindowByHandle( hWnd, LOWORD(lParam), HIWORD(lParam) );
1379 printf("WM_SETFOCUS: %p\n", window );
1380 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1384 if (LOWORD(wParam) != WA_INACTIVE)
1386 /* glutSetCursor( fgStructure.Window->State.Cursor ); */
1387 printf("WM_ACTIVATE: glutSetCursor( %p, %d)\n", window, window->State.Cursor );
1389 glutSetCursor( window->State.Cursor );
1392 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1398 * Windows seems to need reminding to erase the cursor for NONE.
1401 if ((LOWORD(lParam) == HTCLIENT) &&
1402 (fgStructure.Window->State.Cursor == GLUT_CURSOR_NONE))
1405 /* Set the cursor AND change it for this window class. */
1406 # define MAP_CURSOR(a,b) case a: SetCursor( LoadCursor( NULL, b ) ); \
1408 /* Nuke the cursor AND change it for this window class. */
1409 # define ZAP_CURSOR(a,b) case a: SetCursor( NULL ); \
1412 if (LOWORD(lParam) == HTCLIENT)
1413 switch( window->State.Cursor )
1415 MAP_CURSOR( GLUT_CURSOR_RIGHT_ARROW, IDC_ARROW );
1416 MAP_CURSOR( GLUT_CURSOR_LEFT_ARROW, IDC_ARROW );
1417 MAP_CURSOR( GLUT_CURSOR_INFO, IDC_HELP );
1418 MAP_CURSOR( GLUT_CURSOR_DESTROY, IDC_CROSS );
1419 MAP_CURSOR( GLUT_CURSOR_HELP, IDC_HELP );
1420 MAP_CURSOR( GLUT_CURSOR_CYCLE, IDC_SIZEALL );
1421 MAP_CURSOR( GLUT_CURSOR_SPRAY, IDC_CROSS );
1422 MAP_CURSOR( GLUT_CURSOR_WAIT, IDC_WAIT );
1423 MAP_CURSOR( GLUT_CURSOR_TEXT, IDC_UPARROW );
1424 MAP_CURSOR( GLUT_CURSOR_CROSSHAIR, IDC_CROSS );
1425 /* MAP_CURSOR( GLUT_CURSOR_NONE, IDC_NO ); */
1426 ZAP_CURSOR( GLUT_CURSOR_NONE, NULL );
1429 MAP_CURSOR( GLUT_CURSOR_UP_DOWN, IDC_ARROW );
1433 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1438 * We are now Visible!
1440 window->State.Visible = TRUE;
1441 window->State.Redisplay = TRUE;
1446 * Start the painting job
1449 BeginPaint( hWnd, &ps );
1452 * Call the engine's main frame drawing method
1454 fghRedrawWindowByHandle( hWnd );
1457 * End the painting job, release the device context
1459 EndPaint( hWnd, &ps );
1464 * Make sure we don't close a window with current context active
1466 if( fgStructure.Window == window )
1471 wglMakeCurrent( NULL, NULL );
1472 /* Step through the list of windows. If the rendering context is notbeing used
1473 * by another window, then we delete it.
1475 for ( iter = (SFG_Window *)fgStructure.Windows.First; iter; iter = (SFG_Window *)iter->Node.Next )
1477 if ( ( iter->Window.Context == window->Window.Context ) && ( iter != window ) )
1481 if ( used == FALSE ) wglDeleteContext( window->Window.Context );
1485 * Put on a linked list of windows to be removed after all the callbacks have returned
1487 fgAddToWindowDestroyList ( window, FALSE ) ;
1490 * Proceed with the window destruction
1492 DestroyWindow( hWnd );
1497 * The window already got destroyed, so don't bother with it.
1504 * The mouse cursor has moved. Remember the new mouse cursor's position
1506 window->State.MouseX = LOWORD( lParam );
1507 window->State.MouseY = HIWORD( lParam );
1510 * Fallback if there's an active menu hooked to this window
1512 if ( window->ActiveMenu != NULL )
1515 * Let's make the window redraw as a result of the mouse motion.
1517 window->State.Redisplay = TRUE ;
1520 * Since the window is a menu, make the parent window current
1522 fgSetWindow ( window->ActiveMenu->ParentWindow ) ;
1528 * Remember the current modifiers state.
1530 window->State.Modifiers =
1531 ( ( (GetKeyState( VK_LSHIFT ) < 0 ) || ( GetKeyState( VK_RSHIFT ) < 0 )) ? GLUT_ACTIVE_SHIFT : 0 ) |
1532 ( ( (GetKeyState( VK_LCONTROL ) < 0 ) || ( GetKeyState( VK_RCONTROL ) < 0 )) ? GLUT_ACTIVE_CTRL : 0 ) |
1533 ( ( (GetKeyState( VK_LMENU ) < 0 ) || ( GetKeyState( VK_RMENU ) < 0 )) ? GLUT_ACTIVE_ALT : 0 );
1536 * Check if any of the mouse buttons is pressed...
1538 if( (wParam & MK_LBUTTON) || (wParam & MK_MBUTTON) || (wParam & MK_RBUTTON) )
1541 * Yeah, indeed. We need to use the motion callback then:
1543 if( window->Callbacks.Motion != NULL )
1546 * Make sure the current window is set...
1548 fgSetWindow( window );
1551 * Execute the active mouse motion callback now
1553 window->Callbacks.Motion( window->State.MouseX, window->State.MouseY );
1559 * All mouse buttons are up, execute the passive mouse motion callback
1561 if( window->Callbacks.Passive != NULL )
1564 * Make sure the current window is set
1566 fgSetWindow( window );
1569 * Execute the passive mouse motion callback
1571 window->Callbacks.Passive( window->State.MouseX, window->State.MouseY );
1576 * Thrash the current modifiers state now
1578 window->State.Modifiers = 0xffffffff;
1582 case WM_LBUTTONDOWN:
1583 case WM_MBUTTONDOWN:
1584 case WM_RBUTTONDOWN:
1589 GLboolean pressed = TRUE;
1593 * The mouse cursor has moved. Remember the new mouse cursor's position
1595 window->State.MouseX = LOWORD( lParam );
1596 window->State.MouseY = HIWORD( lParam );
1599 * We're curious about the GLUT API button name...
1603 case WM_LBUTTONDOWN: pressed = TRUE; button = GLUT_LEFT_BUTTON; break;
1604 case WM_MBUTTONDOWN: pressed = TRUE; button = GLUT_MIDDLE_BUTTON; break;
1605 case WM_RBUTTONDOWN: pressed = TRUE; button = GLUT_RIGHT_BUTTON; break;
1606 case WM_LBUTTONUP: pressed = FALSE; button = GLUT_LEFT_BUTTON; break;
1607 case WM_MBUTTONUP: pressed = FALSE; button = GLUT_MIDDLE_BUTTON; break;
1608 case WM_RBUTTONUP: pressed = FALSE; button = GLUT_RIGHT_BUTTON; break;
1609 default: pressed = FALSE; button = -1; break;
1613 * The left and right mouse buttons might have been swapped...
1615 if( GetSystemMetrics( SM_SWAPBUTTON ) )
1616 if( button == GLUT_LEFT_BUTTON ) button = GLUT_RIGHT_BUTTON;
1617 else if( button == GLUT_RIGHT_BUTTON ) button = GLUT_LEFT_BUTTON;
1620 * Hey, what's up with you?
1623 return( DefWindowProc( hWnd, uMsg, lParam, wParam ) );
1626 * Do not execute the application's mouse callback if a menu is hooked to this button.
1627 * In that case an appropriate private call should be generated.
1628 * Near as I can tell, this is the menu behaviour:
1629 * - Down-click the menu button, menu not active: activate the menu with its upper left-hand corner at the mouse location.
1630 * - Down-click any button outside the menu, menu active: deactivate the menu
1631 * - Down-click any button inside the menu, menu active: select the menu entry and deactivate the menu
1632 * - Up-click the menu button, menu not active: nothing happens
1633 * - Up-click the menu button outside the menu, menu active: nothing happens
1634 * - Up-click the menu button inside the menu, menu active: select the menu entry and deactivate the menu
1636 if ( window->ActiveMenu != NULL ) /* Window has an active menu, it absorbs any mouse click */
1638 if ( fgCheckActiveMenu ( window, window->ActiveMenu ) == TRUE ) /* Inside the menu, invoke the callback and deactivate the menu*/
1640 /* Save the current window and menu and set the current window to the window whose menu this is */
1641 SFG_Window *save_window = fgStructure.Window ;
1642 SFG_Menu *save_menu = fgStructure.Menu ;
1643 SFG_Window *parent_window = window->ActiveMenu->ParentWindow ;
1644 fgSetWindow ( window ) ;
1645 fgStructure.Menu = window->ActiveMenu ;
1647 /* Execute the menu callback */
1648 fgExecuteMenuCallback ( window->ActiveMenu ) ;
1649 fgDeactivateMenu ( parent_window ) ;
1651 /* Restore the current window and menu */
1652 fgSetWindow ( save_window ) ;
1653 fgStructure.Menu = save_menu ;
1655 else /* Outside the menu, deactivate the menu if it's a downclick */
1657 if ( pressed == TRUE ) fgDeactivateMenu ( window->ActiveMenu->ParentWindow ) ;
1661 * Let's make the window redraw as a result of the mouse click and menu activity.
1663 if ( ! window->IsMenu ) window->State.Redisplay = TRUE ;
1669 * No active menu, let's check whether we need to activate one.
1671 if ( ( window->Menu[ button ] != NULL ) && ( pressed == TRUE ) )
1674 * Let's make the window redraw as a result of the mouse click.
1676 window->State.Redisplay = TRUE ;
1679 * Set the current window
1681 fgSetWindow( window );
1684 * Activate the appropriate menu structure...
1686 fgActivateMenu( window, button );
1692 * Check if there is a mouse callback hooked to the window
1694 if( window->Callbacks.Mouse == NULL )
1698 * Set the current window
1700 fgSetWindow ( window );
1703 * Remember the current modifiers state.
1705 fgStructure.Window->State.Modifiers =
1706 ( ( (GetKeyState( VK_LSHIFT ) < 0 ) || ( GetKeyState( VK_RSHIFT ) < 0 )) ? GLUT_ACTIVE_SHIFT : 0 ) |
1707 ( ( (GetKeyState( VK_LCONTROL ) < 0 ) || ( GetKeyState( VK_RCONTROL ) < 0 )) ? GLUT_ACTIVE_CTRL : 0 ) |
1708 ( ( (GetKeyState( VK_LMENU ) < 0 ) || ( GetKeyState( VK_RMENU ) < 0 )) ? GLUT_ACTIVE_ALT : 0 );
1711 * Finally execute the mouse callback
1713 window->Callbacks.Mouse(
1715 pressed == TRUE ? GLUT_DOWN : GLUT_UP,
1716 window->State.MouseX,
1717 window->State.MouseY
1721 * Trash the modifiers state
1723 fgStructure.Window->State.Modifiers = 0xffffffff;
1734 * Ignore the automatic key repetition if needed:
1736 if( fgState.IgnoreKeyRepeat && (lParam & KF_REPEAT) )
1740 * Remember the current modifiers state. This is done here in order
1741 * to make sure the VK_DELETE keyboard callback is executed properly.
1743 window->State.Modifiers =
1744 ( ( (GetKeyState( VK_LSHIFT ) < 0 ) || ( GetKeyState( VK_RSHIFT ) < 0 )) ? GLUT_ACTIVE_SHIFT : 0 ) |
1745 ( ( (GetKeyState( VK_LCONTROL ) < 0 ) || ( GetKeyState( VK_RCONTROL ) < 0 )) ? GLUT_ACTIVE_CTRL : 0 ) |
1746 ( ( (GetKeyState( VK_LMENU ) < 0 ) || ( GetKeyState( VK_RMENU ) < 0 )) ? GLUT_ACTIVE_ALT : 0 );
1749 * Set the mouse position
1751 GetCursorPos ( &mouse_pos ) ;
1752 ScreenToClient ( window->Window.Handle, &mouse_pos ) ;
1754 window->State.MouseX = mouse_pos.x ;
1755 window->State.MouseY = mouse_pos.y ;
1758 * Convert the Win32 keystroke codes to GLUTtish way
1760 # define KEY(a,b) case a: keypress = b; break;
1765 * Most of the special characters can be handled automagically...
1767 KEY( VK_F1, GLUT_KEY_F1 ); KEY( VK_F2, GLUT_KEY_F2 );
1768 KEY( VK_F3, GLUT_KEY_F3 ); KEY( VK_F4, GLUT_KEY_F4 );
1769 KEY( VK_F5, GLUT_KEY_F5 ); KEY( VK_F6, GLUT_KEY_F6 );
1770 KEY( VK_F7, GLUT_KEY_F7 ); KEY( VK_F8, GLUT_KEY_F8 );
1771 KEY( VK_F9, GLUT_KEY_F9 ); KEY( VK_F10, GLUT_KEY_F10 );
1772 KEY( VK_F11, GLUT_KEY_F11 ); KEY( VK_F12, GLUT_KEY_F12 );
1773 KEY( VK_PRIOR, GLUT_KEY_PAGE_UP ); KEY( VK_NEXT, GLUT_KEY_PAGE_DOWN );
1774 KEY( VK_HOME, GLUT_KEY_HOME ); KEY( VK_END, GLUT_KEY_END );
1775 KEY( VK_LEFT, GLUT_KEY_LEFT ); KEY( VK_UP, GLUT_KEY_UP );
1776 KEY( VK_RIGHT, GLUT_KEY_RIGHT ); KEY( VK_DOWN, GLUT_KEY_DOWN );
1777 KEY( VK_INSERT, GLUT_KEY_INSERT );
1780 * ...yet there is a small exception we need to have handled...
1784 * The delete key should be treated as an ASCII keypress:
1786 if( window->Callbacks.Keyboard != NULL )
1788 fgSetWindow( window );
1789 window->Callbacks.Keyboard( 127, window->State.MouseX, window->State.MouseY );
1794 * Execute the special callback, if present, given the conversion was a success:
1796 if( (keypress != -1) && (window->Callbacks.Special != NULL) )
1799 * Set the current window
1801 fgSetWindow( window );
1804 * Have the special callback executed:
1806 window->Callbacks.Special( keypress, window->State.MouseX, window->State.MouseY );
1810 * Thrash the modifiers register now
1812 window->State.Modifiers = 0xffffffff;
1823 * Remember the current modifiers state. This is done here in order
1824 * to make sure the VK_DELETE keyboard callback is executed properly.
1826 window->State.Modifiers =
1827 ( ( (GetKeyState( VK_LSHIFT ) < 0 ) || ( GetKeyState( VK_RSHIFT ) < 0 )) ? GLUT_ACTIVE_SHIFT : 0 ) |
1828 ( ( (GetKeyState( VK_LCONTROL ) < 0 ) || ( GetKeyState( VK_RCONTROL ) < 0 )) ? GLUT_ACTIVE_CTRL : 0 ) |
1829 ( ( (GetKeyState( VK_LMENU ) < 0 ) || ( GetKeyState( VK_RMENU ) < 0 )) ? GLUT_ACTIVE_ALT : 0 );
1832 * Set the mouse position
1834 GetCursorPos ( &mouse_pos ) ;
1835 ScreenToClient ( window->Window.Handle, &mouse_pos ) ;
1837 window->State.MouseX = mouse_pos.x ;
1838 window->State.MouseY = mouse_pos.y ;
1841 * Convert the Win32 keystroke codes to GLUTtish way. "KEY(a,b)" was defined under "WM_KEYDOWN"
1847 * Most of the special characters can be handled automagically...
1849 KEY( VK_F1, GLUT_KEY_F1 ); KEY( VK_F2, GLUT_KEY_F2 );
1850 KEY( VK_F3, GLUT_KEY_F3 ); KEY( VK_F4, GLUT_KEY_F4 );
1851 KEY( VK_F5, GLUT_KEY_F5 ); KEY( VK_F6, GLUT_KEY_F6 );
1852 KEY( VK_F7, GLUT_KEY_F7 ); KEY( VK_F8, GLUT_KEY_F8 );
1853 KEY( VK_F9, GLUT_KEY_F9 ); KEY( VK_F10, GLUT_KEY_F10 );
1854 KEY( VK_F11, GLUT_KEY_F11 ); KEY( VK_F12, GLUT_KEY_F12 );
1855 KEY( VK_PRIOR, GLUT_KEY_PAGE_UP ); KEY( VK_NEXT, GLUT_KEY_PAGE_DOWN );
1856 KEY( VK_HOME, GLUT_KEY_HOME ); KEY( VK_END, GLUT_KEY_END );
1857 KEY( VK_LEFT, GLUT_KEY_LEFT ); KEY( VK_UP, GLUT_KEY_UP );
1858 KEY( VK_RIGHT, GLUT_KEY_RIGHT ); KEY( VK_DOWN, GLUT_KEY_DOWN );
1859 KEY( VK_INSERT, GLUT_KEY_INSERT );
1862 * ...yet there is a small exception we need to have handled...
1866 * The delete key should be treated as an ASCII keypress:
1868 if( window->Callbacks.KeyboardUp != NULL )
1870 fgSetWindow ( window ) ;
1871 window->Callbacks.KeyboardUp( 127, window->State.MouseX, window->State.MouseY );
1878 * Call the KeyboardUp callback for a regular character if there is one.
1883 GetKeyboardState(state);
1885 if ( ToAscii( wParam, 0, state, code, 0 ) == 1 )
1888 if( window->Callbacks.KeyboardUp != NULL )
1891 * Set the current window
1893 fgSetWindow( window );
1895 window->Callbacks.KeyboardUp( (char)wParam, window->State.MouseX, window->State.MouseY );
1901 * Execute the special callback, if present, given the conversion was a success:
1903 if( (keypress != -1) && (window->Callbacks.SpecialUp != NULL) )
1906 * Set the current window
1908 fgSetWindow( window );
1911 * Have the special callback executed:
1913 window->Callbacks.SpecialUp( keypress, window->State.MouseX, window->State.MouseY );
1917 * Thrash the modifiers register now
1919 window->State.Modifiers = 0xffffffff;
1927 * Ignore the automatic key repetition if needed:
1929 if( fgState.IgnoreKeyRepeat && (lParam & KF_REPEAT) )
1933 * Clear to go with the keyboard callback, if registered:
1935 if( window->Callbacks.Keyboard != NULL )
1938 * Set the current window
1940 fgSetWindow( window );
1943 * Remember the current modifiers state
1945 window->State.Modifiers =
1946 ( ( (GetKeyState( VK_LSHIFT ) < 0 ) || ( GetKeyState( VK_RSHIFT ) < 0 )) ? GLUT_ACTIVE_SHIFT : 0 ) |
1947 ( ( (GetKeyState( VK_LCONTROL ) < 0 ) || ( GetKeyState( VK_RCONTROL ) < 0 )) ? GLUT_ACTIVE_CTRL : 0 ) |
1948 ( ( (GetKeyState( VK_LMENU ) < 0 ) || ( GetKeyState( VK_RMENU ) < 0 )) ? GLUT_ACTIVE_ALT : 0 );
1951 * Have the special callback executed:
1953 window->Callbacks.Keyboard( (char)wParam, window->State.MouseX, window->State.MouseY );
1956 * Thrash the modifiers register now
1958 window->State.Modifiers = 0xffffffff;
1963 case WM_CAPTURECHANGED : /* User has finished resizing the window, force a redraw */
1964 if ( window->Callbacks.Display )
1967 * Set the current window
1969 fgSetWindow( window );
1971 window->Callbacks.Display () ;
1974 /* lRet = DefWindowProc( hWnd, uMsg, wParam, lParam ) ; */
1978 * Other messages that I have seen and which are not handled already
1980 case WM_SETTEXT : /* 0x000c */
1981 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam ); /* Pass it on to "DefWindowProc" to set the window text */
1984 case WM_GETTEXT : /* 0x000d */
1985 /* Ideally we would copy the title of the window into "lParam" */
1986 /* strncpy ( (char *)lParam, "Window Title", wParam ) ;
1987 lRet = ( wParam > 12 ) ? 12 : wParam ; */ /* the number of characters copied */
1988 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1991 case WM_GETTEXTLENGTH : /* 0x000e */
1992 /* Ideally we would get the length of the title of the window */
1993 lRet = 12 ; /* the number of characters in "Window Title\0" (see above) */
1996 case WM_ERASEBKGND : /* 0x0014 */
1997 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
2000 case WM_SYNCPAINT : /* 0x0088 */
2001 /* Another window has moved, need to update this one */
2002 window->State.Redisplay = TRUE ;
2003 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam ); /* Help screen says this message must be passed to "DefWindowProc" */
2006 case WM_NCPAINT : /* 0x0085 */
2007 /* Need to update the border of this window */
2008 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam ); /* Pass it on to "DefWindowProc" to repaint a standard border */
2013 * Handle unhandled messages
2015 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
2023 /*** END OF FILE ***/