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 "../include/GL/freeglut_internal.h"
38 * TODO BEFORE THE STABLE RELEASE:
40 * There are some issues concerning window redrawing under X11, and maybe
41 * some events are not handled. The Win32 version lacks some more features,
42 * but seems acceptable for not demanding purposes.
44 * Need to investigate why the X11 version breaks out with an error when
45 * closing a window (using the window manager, not glutDestroyWindow)...
48 /* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
51 * Calls a window's redraw method. This is used when
52 * a redraw is forced by the incoming window messages.
54 static void fghRedrawWindowByHandle
55 #if TARGET_HOST_UNIX_X11
57 #elif TARGET_HOST_WIN32
62 * Find the window we have to redraw...
64 SFG_Window* window = fgWindowByHandle( handle );
65 freeglut_return_if_fail( window != NULL );
68 * Check if there is a display callback hooked to it
70 freeglut_return_if_fail( window->Callbacks.Display != NULL );
73 * Return if the window is not visible
75 freeglut_return_if_fail( window->State.Visible != TRUE );
78 * Set the window as the current one. Calling glutSetWindow()
79 * might seem slow and generally redundant, but it is portable.
81 glutSetWindow( window->ID );
84 * Have the callback executed now. The buffers should
85 * be swapped by the glutSwapBuffers() execution inside
86 * the callback itself.
88 window->Callbacks.Display();
92 * Handle a window configuration change. When no reshape
93 * callback is hooked, the viewport size is updated to
94 * match the new window size.
96 static void fghReshapeWindowByHandle
97 #if TARGET_HOST_UNIX_X11
98 ( Window handle, int width, int height )
99 #elif TARGET_HOST_WIN32
100 ( HWND handle, int width, int height )
104 * Find the window that received the reshape event
106 SFG_Window* window = fgWindowByHandle( handle );
107 freeglut_return_if_fail( window != NULL );
110 * Remember about setting the current window...
112 glutSetWindow( window->ID );
115 * Check if there is a reshape callback hooked
117 if( window->Callbacks.Reshape != NULL )
120 * OKi, have it called immediately
122 window->Callbacks.Reshape( width, height );
127 * Otherwise just resize the viewport
129 glViewport( 0, 0, width, height );
134 * A static helper function to execute display callback for a window
136 static void fghcbDisplayWindow( SFG_Window *window, SFG_Enumerator *enumerator )
138 #if TARGET_HOST_UNIX_X11
140 * Check if there is an idle callback hooked
142 // # warning there is a redisplay hack here (see the code commented out)
143 if( (window->Callbacks.Display != NULL) &&
144 /*(window->State.Redisplay == TRUE) &&*/
145 (window->State.Visible == TRUE) )
148 * OKi, this is the case: have the window set as the current one
150 glutSetWindow( window->ID );
153 * Do not exagerate with the redisplaying
155 window->State.Redisplay = FALSE;
158 * And execute the display callback immediately after
160 window->Callbacks.Display();
163 #elif TARGET_HOST_WIN32
166 * Do we need to explicitly resize the window?
168 if( window->State.NeedToResize )
170 glutSetWindow( window->ID );
172 fghReshapeWindowByHandle(
173 window->Window.Handle,
174 glutGet( GLUT_WINDOW_WIDTH ),
175 glutGet( GLUT_WINDOW_HEIGHT )
179 * Never ever do that again:
181 window->State.NeedToResize = FALSE;
185 * This is done in a bit different way under Windows
188 window->Window.Handle, NULL, NULL,
189 RDW_NOERASE | RDW_INTERNALPAINT | RDW_INVALIDATE
195 * Process this window's children (if any)
197 fgEnumSubWindows( window, fghcbDisplayWindow, enumerator );
201 * Make all windows perform a display call
203 static void fghDisplayAll( void )
205 SFG_Enumerator enumerator;
208 * Uses a method very similiar for fgWindowByHandle...
210 enumerator.found = FALSE;
211 enumerator.data = NULL;
214 * Start the enumeration now:
216 fgEnumWindows( fghcbDisplayWindow, &enumerator );
220 * Window enumerator callback to check for the joystick polling code
222 static void fghcbCheckJoystickPolls( SFG_Window *window, SFG_Enumerator *enumerator )
224 double checkTime = fgElapsedTime();
227 * Check if actually need to do the poll for the currently enumerated window:
229 if( window->State.JoystickLastPoll + window->State.JoystickPollRate >= checkTime )
232 * Yeah, that's it. Poll the joystick...
234 fgJoystickPollWindow( window );
237 * ...and reset the polling counters:
239 window->State.JoystickLastPoll = checkTime;
243 * Process this window's children (if any)
245 fgEnumSubWindows( window, fghcbCheckJoystickPolls, enumerator );
249 * Check all windows for joystick polling
251 static void fghCheckJoystickPolls( void )
253 SFG_Enumerator enumerator;
256 * Uses a method very similiar for fgWindowByHandle...
258 enumerator.found = FALSE;
259 enumerator.data = NULL;
262 * Start the enumeration now:
264 fgEnumWindows( fghcbCheckJoystickPolls, &enumerator );
268 * Check the global timers
270 static void fghCheckTimers( void )
272 long checkTime = fgElapsedTime();
273 SFG_Timer *timer, *next;
276 fgListInit(&timedOut);
279 * For every timer that is waiting for triggering
281 for( timer = fgState.Timers.First; timer; timer = next )
283 next = timer->Node.Next;
286 * Check for the timeout:
288 if( timer->TriggerTime <= checkTime )
291 * Add the timer to the timed out timers list
293 fgListRemove( &fgState.Timers, &timer->Node );
294 fgListAppend( &timedOut, &timer->Node );
299 * Now feel free to execute all the hooked and timed out timer callbacks
300 * And delete the timed out timers...
302 while ( (timer = timedOut.First) )
304 if( timer->Callback != NULL )
305 timer->Callback( timer->ID );
306 fgListRemove( &timedOut, &timer->Node );
314 long fgElapsedTime( void )
319 gettimeofday( &now, NULL );
321 elapsed = (now.tv_usec - fgState.Time.Value.tv_usec) / 1000;
322 elapsed += (now.tv_sec - fgState.Time.Value.tv_sec) * 1000;
330 void fgError( const char *fmt, ... )
336 fprintf( stderr, "freeglut: ");
337 vfprintf( stderr, fmt, ap );
338 fprintf( stderr, "\n" );
345 void fgWarning( const char *fmt, ... )
351 fprintf( stderr, "freeglut: ");
352 vfprintf( stderr, fmt, ap );
353 fprintf( stderr, "\n" );
358 /* -- INTERFACE FUNCTIONS -------------------------------------------------- */
361 * Enters the FreeGLUT processing loop. Never returns.
363 void FGAPIENTRY glutMainLoop( void )
365 #if TARGET_HOST_UNIX_X11
370 * This code was repeated constantly, so here it goes into a definition:
372 # define GETWINDOW(a) window = fgWindowByHandle( event.a.window );if( window == NULL ) break;
373 # define GETMOUSE(a) window->State.MouseX = event.a.x; window->State.MouseY = event.a.y;
376 * Make sure the display has been created etc.
378 freeglut_assert_ready;
381 * Enter the loop. Iterate as long as there are
382 * any windows in the freeglut structure.
384 while( fgStructure.Windows.First != NULL )
387 * Do we have any event messages pending?
389 if( XPending( fgDisplay.Display ) )
392 * Grab the next event to be processed...
394 XNextEvent( fgDisplay.Display, &event );
397 * Check the event's type
403 * The window creation confirmation
409 * This is sent to confirm the XDestroyWindow call. Ignore it.
415 * Destroy the window when the WM_DELETE_WINDOW message arrives
417 if( (Atom) event.xclient.data.l[ 0 ] == fgDisplay.DeleteWindow )
420 * I wonder if the window still exists ;-)
422 fgDestroyWindow( fgWindowByHandle( event.xclient.window ), TRUE );
428 * A window of ours has been unmapped...
434 * We are too dumb to process partial exposes...
436 if( event.xexpose.count == 0 )
437 fghRedrawWindowByHandle( event.xexpose.window );
440 case ConfigureNotify:
442 * The window gets resized
444 fghReshapeWindowByHandle(
445 event.xconfigure.window,
446 event.xconfigure.width,
447 event.xconfigure.height
453 * Have the client's keyboard knowledge updated (xlib.ps,
454 * page 206, says that's a good thing to do)
456 XRefreshKeyboardMapping( (XMappingEvent *) &event );
459 case VisibilityNotify:
462 * The window's visiblity might have changed
464 GETWINDOW( xvisibility );
467 * Break now if no window status callback has been hooked to that window
469 if( window->Callbacks.WindowStatus == NULL )
473 * We're going to send a callback to a window. Make it current.
475 glutSetWindow( window->ID );
478 * Sending this event, the X server can notify us that the window has just
479 * acquired one of the three possible visibility states: VisibilityUnobscured,
480 * VisibilityPartiallyObscured or VisibilityFullyObscured
482 switch( event.xvisibility.state )
484 case VisibilityUnobscured:
486 * We are fully visible...
488 window->Callbacks.WindowStatus( GLUT_FULLY_RETAINED );
489 window->State.Visible = TRUE;
492 case VisibilityPartiallyObscured:
494 * The window is partially visible
496 window->Callbacks.WindowStatus( GLUT_PARTIALLY_RETAINED );
497 window->State.Visible = TRUE;
500 case VisibilityFullyObscured:
502 * The window is totally obscured
504 window->Callbacks.WindowStatus( GLUT_FULLY_COVERED );
505 window->State.Visible = FALSE;
514 * Mouse is over one of our windows
516 GETWINDOW( xcrossing ); GETMOUSE( xcrossing );
519 * Is there an entry callback hooked to the window?
521 if( window->Callbacks.Entry != NULL )
524 * Yeah. Notify the window about having the mouse cursor over
526 window->Callbacks.Entry( GLUT_ENTERED );
534 * Mouse is no longer over one of our windows
536 GETWINDOW( xcrossing ); GETMOUSE( xcrossing );
539 * Is there an entry callback hooked to the window?
541 if( window->Callbacks.Entry != NULL )
544 * Yeah. Notify the window about having the mouse cursor over
546 window->Callbacks.Entry( GLUT_LEFT );
554 * The mouse cursor was moved...
556 GETWINDOW( xmotion ); GETMOUSE( xmotion );
559 * What kind of a movement was it?
561 if( (event.xmotion.state & Button1Mask) || (event.xmotion.state & Button2Mask) ||
562 (event.xmotion.state & Button3Mask) || (event.xmotion.state & Button4Mask) ||
563 (event.xmotion.state & Button5Mask) )
566 * A mouse button was pressed during the movement...
567 * Is there a motion callback hooked to the window?
569 if( window->Callbacks.Motion != NULL )
572 * Yup. Have it executed immediately
574 window->Callbacks.Motion( event.xmotion.x, event.xmotion.y );
580 * Otherwise it was a passive movement...
582 if( window->Callbacks.Passive != NULL )
585 * That's right, and there is a passive callback, too.
587 window->Callbacks.Passive( event.xmotion.x, event.xmotion.y );
599 * A mouse button has been pressed or released. Traditionally,
600 * break if the window was found within the freeglut structures.
602 GETWINDOW( xbutton ); GETMOUSE( xbutton );
605 * GLUT API assumes that you can't have more than three mouse buttons, so:
607 switch( event.xbutton.button )
610 * WARNING: this might be wrong, if we only have two mouse buttons,
611 * Button2 might mean the right button, isn't that right?
613 case Button1: button = GLUT_LEFT_BUTTON; break;
614 case Button2: button = GLUT_MIDDLE_BUTTON; break;
615 case Button3: button = GLUT_RIGHT_BUTTON; break;
616 default: button = -1; break;
620 * Skip the unwanted mouse buttons...
626 * Do not execute the callback if a menu is hooked to this key.
627 * In that case an appropriate private call should be generated
629 if( window->Menu[ button ] != NULL )
632 * Set the current window
634 glutSetWindow( window->ID );
636 if( event.type == ButtonPress )
639 * Activate the appropriate menu structure...
641 fgActivateMenu( button );
646 * There are two general cases generated when a menu button
647 * is released -- it can provoke a menu call (when released
648 * over a menu area) or just deactivate the menu (when released
649 * somewhere else). Unfortunately, both cases must be checked
650 * recursively due to the submenu possibilities.
652 fgDeactivateMenu( button );
658 * Check if there is a mouse callback hooked to the window
660 if( window->Callbacks.Mouse == NULL )
664 * Set the current window
666 glutSetWindow( window->ID );
669 * Remember the current modifiers state
671 window->State.Modifiers = event.xbutton.state;
674 * Finally execute the mouse callback
676 window->Callbacks.Mouse(
678 event.type == ButtonPress ? GLUT_DOWN : GLUT_UP,
684 * Trash the modifiers state
686 window->State.Modifiers = 0xffffffff;
693 * A key has been pressed, find the window that had the focus:
695 GETWINDOW( xkey ); GETMOUSE( xkey );
698 * Is there a keyboard/special callback hooked for this window?
700 if( (window->Callbacks.Keyboard != NULL) || (window->Callbacks.Special != NULL) )
702 XComposeStatus composeStatus;
703 char asciiCode[ 32 ];
708 * Check for the ASCII/KeySym codes associated with the event:
710 len = XLookupString( &event.xkey, asciiCode, sizeof(asciiCode), &keySym, &composeStatus );
713 * Get ready to calling the keyboard/special callbacks
715 glutSetWindow( window->ID );
718 * GLUT API tells us to have two separate callbacks...
723 * ...one for the ASCII translateable keypresses...
725 if( window->Callbacks.Keyboard != NULL )
728 * Remember the current modifiers state
730 window->State.Modifiers = event.xkey.state;
733 * Execute the callback
735 window->Callbacks.Keyboard( asciiCode[ 0 ], event.xkey.x, event.xkey.y );
738 * Trash the modifiers state
740 window->State.Modifiers = 0xffffffff;
748 * ...and one for all the others, which need to be translated to GLUT_KEY_Xs...
753 * First the function keys come:
755 case XK_F1: special = GLUT_KEY_F1; break;
756 case XK_F2: special = GLUT_KEY_F2; break;
757 case XK_F3: special = GLUT_KEY_F3; break;
758 case XK_F4: special = GLUT_KEY_F4; break;
759 case XK_F5: special = GLUT_KEY_F5; break;
760 case XK_F6: special = GLUT_KEY_F6; break;
761 case XK_F7: special = GLUT_KEY_F7; break;
762 case XK_F8: special = GLUT_KEY_F8; break;
763 case XK_F9: special = GLUT_KEY_F9; break;
764 case XK_F10: special = GLUT_KEY_F10; break;
765 case XK_F11: special = GLUT_KEY_F11; break;
766 case XK_F12: special = GLUT_KEY_F12; break;
769 * Then the arrows and stuff:
771 case XK_Left: special = GLUT_KEY_LEFT; break;
772 case XK_Right: special = GLUT_KEY_RIGHT; break;
773 case XK_Up: special = GLUT_KEY_UP; break;
774 case XK_Down: special = GLUT_KEY_DOWN; break;
778 * Execute the callback (if one has been specified),
779 * given that the special code seems to be valid...
781 if( (window->Callbacks.Special != NULL) && (special != -1) )
784 * Remember the current modifiers state
786 window->State.Modifiers = event.xkey.state;
788 window->Callbacks.Special( special, event.xkey.x, event.xkey.y );
791 * Trash the modifiers state
793 window->State.Modifiers = 0xffffffff;
804 * Have all the timers checked.
809 * Poll the joystick and notify all windows that want to be notified...
811 fghCheckJoystickPolls();
814 * No messages in the queue, which means we are idling...
816 if( fgState.IdleCallback != NULL )
817 fgState.IdleCallback();
820 * Remember about displaying all the windows that have
821 * been marked for a redisplay (possibly in the idle call):
827 #elif TARGET_HOST_WIN32
829 gboolean bLoop = TRUE;
833 * The windows main loop is considerably smaller
837 if( PeekMessage( &stMsg, NULL, 0, 0, PM_NOREMOVE ) )
840 * Grab the message now, checking for WM_QUIT
842 if( GetMessage( &stMsg, NULL, 0, 0 ) == 0 )
846 * Translate virtual-key messages and send them to the window...
848 TranslateMessage( &stMsg );
849 DispatchMessage( &stMsg );
854 * Have all the timers checked.
859 * Poll the joystick and notify all windows that want to be notified...
861 fghCheckJoystickPolls();
864 * No messages in the queue, which means we are idling...
866 if( fgState.IdleCallback != NULL )
867 fgState.IdleCallback();
870 * Remember about displaying all the windows that have
871 * been marked for a redisplay (possibly in the idle call):
876 * We need to terminate the main loop if no windows are left
878 bLoop = (g_list_length( fgStructure.Windows ) != 0);
885 * When this loop terminates, destroy the display, state and structure
886 * of a freeglut session, so that another glutInit() call can happen
892 * The window procedure for handling Win32 events
894 #if TARGET_HOST_WIN32
895 LRESULT CALLBACK fgWindowProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
897 SFG_Window* window = fgWindowByHandle( hWnd );
901 # define assert_window_registered if( window == NULL ) return( DefWindowProc( hWnd, uMsg, wParam, lParam ) );
904 * Check what type of message are we receiving
910 * The window structure is passed as the creation structure paramter...
912 window = (SFG_Window *) (((LPCREATESTRUCT) lParam)->lpCreateParams);
913 g_assert( window != NULL );
916 * We can safely store the window's handle now:
918 window->Window.Handle = hWnd;
921 * Get the window's device context
923 window->Window.Device = GetDC( hWnd );
926 * Setup the pixel format of our window
928 fgSetupPixelFormat( window, FALSE );
931 * Create the OpenGL rendering context now
933 window->Window.Context = wglCreateContext( window->Window.Device );
936 * Still, we'll be needing to explicitly resize the window
938 window->State.NeedToResize = TRUE;
941 * Finally, have the window's device context released
943 ReleaseDC( window->Window.Handle, window->Window.Device );
948 * We got resized... But check if the window has been already added...
950 fghReshapeWindowByHandle( hWnd, LOWORD(lParam), HIWORD(lParam) );
955 * Start the painting job
957 BeginPaint( hWnd, &ps );
960 * Call the engine's main frame drawing method
962 fghRedrawWindowByHandle( hWnd );
965 * End the painting job, release the device context
967 EndPaint( hWnd, &ps );
972 * Make sure we don't close a window with current context active
974 if( fgStructure.Window == window )
976 wglMakeCurrent( NULL, NULL );
977 wglDeleteContext( window->Window.Context );
981 * Proceed with the window destruction
983 DestroyWindow( window->Window.Handle );
988 * The window already got destroyed, so forget about it's existence:
990 fgDestroyWindow( window, FALSE );
995 assert_window_registered;
998 * The mouse cursor has moved. Remember the new mouse cursor's position
1000 window->State.MouseX = LOWORD( lParam );
1001 window->State.MouseY = HIWORD( lParam );
1004 * Fallback if there's an active menu hooked to this window
1006 if( window->MenuActive[ 0 ] || window->MenuActive[ 1 ] || window->MenuActive[ 2 ] )
1010 * Remember the current modifiers state.
1012 window->State.Modifiers =
1013 (GetKeyState( VK_LSHIFT ) || GetKeyState( VK_RSHIFT )) ? GLUT_ACTIVE_SHIFT : 0 |
1014 (GetKeyState( VK_LCONTROL ) || GetKeyState( VK_RCONTROL )) ? GLUT_ACTIVE_CTRL : 0 |
1015 (GetKeyState( VK_LMENU ) || GetKeyState( VK_RMENU )) ? GLUT_ACTIVE_ALT : 0;
1018 * Check if any of the mouse buttons is pressed...
1020 if( (wParam & MK_LBUTTON) || (wParam & MK_MBUTTON) || (wParam & MK_RBUTTON) )
1023 * Yeah, indeed. We need to use the motion callback then:
1025 if( window->Callbacks.Motion != NULL )
1028 * Make sure the current window is set...
1030 glutSetWindow( window->ID );
1033 * Execute the active mouse motion callback now
1035 window->Callbacks.Motion( window->State.MouseX, window->State.MouseY );
1041 * All mouse buttons are up, execute the passive mouse motion callback
1043 if( window->Callbacks.Passive != NULL )
1046 * Make sure the current window is set
1048 glutSetWindow( window->ID );
1051 * Execute the passive mouse motion callback
1053 window->Callbacks.Passive( window->State.MouseX, window->State.MouseY );
1058 * Thrash the current modifiers state now
1060 window->State.Modifiers = 0xffffffff;
1064 case WM_LBUTTONDOWN:
1065 case WM_MBUTTONDOWN:
1066 case WM_RBUTTONDOWN:
1071 gboolean pressed = TRUE;
1075 * A mouse button has been pressed *or* released. Again, break off
1076 * if the message was not directed towards a freeglut window...
1078 assert_window_registered;
1081 * The mouse cursor has moved. Remember the new mouse cursor's position
1083 window->State.MouseX = LOWORD( lParam );
1084 window->State.MouseY = HIWORD( lParam );
1087 * We're curious about the GLUT API button name...
1091 case WM_LBUTTONDOWN: pressed = TRUE; button = GLUT_LEFT_BUTTON; break;
1092 case WM_MBUTTONDOWN: pressed = TRUE; button = GLUT_MIDDLE_BUTTON; break;
1093 case WM_RBUTTONDOWN: pressed = TRUE; button = GLUT_RIGHT_BUTTON; break;
1094 case WM_LBUTTONUP: pressed = FALSE; button = GLUT_LEFT_BUTTON; break;
1095 case WM_MBUTTONUP: pressed = FALSE; button = GLUT_MIDDLE_BUTTON; break;
1096 case WM_RBUTTONUP: pressed = FALSE; button = GLUT_RIGHT_BUTTON; break;
1097 default: pressed = FALSE; button = -1; break;
1101 * The left and right mouse buttons might have been swapped...
1103 if( GetSystemMetrics( SM_SWAPBUTTON ) )
1104 if( button == GLUT_LEFT_BUTTON ) button = GLUT_RIGHT_BUTTON;
1105 else if( button == GLUT_RIGHT_BUTTON ) button = GLUT_LEFT_BUTTON;
1108 * Hey, what's up with you?
1111 return( DefWindowProc( hWnd, uMsg, lParam, wParam ) );
1114 * Do not execute the callback if a menu is hooked to this key.
1115 * In that case an appropriate private call should be generated
1117 if( window->Menu[ button ] != NULL )
1120 * Set the current window
1122 glutSetWindow( window->ID );
1124 if( pressed == TRUE )
1127 * Activate the appropriate menu structure...
1129 fgActivateMenu( button );
1134 * There are two general cases generated when a menu button
1135 * is released -- it can provoke a menu call (when released
1136 * over a menu area) or just deactivate the menu (when released
1137 * somewhere else). Unfortunately, both cases must be checked
1138 * recursively due to the submenu possibilities.
1140 fgDeactivateMenu( button );
1146 * Check if there is a mouse callback hooked to the window
1148 if( window->Callbacks.Mouse == NULL )
1152 * Set the current window
1154 glutSetWindow( window->ID );
1157 * Remember the current modifiers state.
1159 window->State.Modifiers =
1160 (GetKeyState( VK_LSHIFT ) || GetKeyState( VK_RSHIFT )) ? GLUT_ACTIVE_SHIFT : 0 |
1161 (GetKeyState( VK_LCONTROL ) || GetKeyState( VK_RCONTROL )) ? GLUT_ACTIVE_CTRL : 0 |
1162 (GetKeyState( VK_LMENU ) || GetKeyState( VK_RMENU )) ? GLUT_ACTIVE_ALT : 0;
1165 * Finally execute the mouse callback
1167 window->Callbacks.Mouse(
1169 pressed == TRUE ? GLUT_DOWN : GLUT_UP,
1170 window->State.MouseX,
1171 window->State.MouseY
1175 * Trash the modifiers state
1177 window->State.Modifiers = 0xffffffff;
1187 * First of all, make sure that there is a window to be notified of this
1189 assert_window_registered;
1192 * Ignore the automatic key repetition if needed:
1194 if( fgState.IgnoreKeyRepeat && (lParam & KF_REPEAT) )
1198 * Remember the current modifiers state. This is done here in order
1199 * to make sure the VK_DELETE keyboard callback is executed properly.
1201 window->State.Modifiers =
1202 (GetKeyState( VK_LSHIFT ) || GetKeyState( VK_RSHIFT )) ? GLUT_ACTIVE_SHIFT : 0 |
1203 (GetKeyState( VK_LCONTROL ) || GetKeyState( VK_RCONTROL )) ? GLUT_ACTIVE_CTRL : 0 |
1204 (GetKeyState( VK_LMENU ) || GetKeyState( VK_RMENU )) ? GLUT_ACTIVE_ALT : 0;
1207 * Convert the Win32 keystroke codes to GLUTtish way
1209 # define KEY(a,b) case a: keypress = b; break;
1214 * Most of the special characters can be handled automagically...
1216 KEY( VK_F1, GLUT_KEY_F1 ); KEY( VK_F2, GLUT_KEY_F2 );
1217 KEY( VK_F3, GLUT_KEY_F3 ); KEY( VK_F4, GLUT_KEY_F4 );
1218 KEY( VK_F5, GLUT_KEY_F5 ); KEY( VK_F6, GLUT_KEY_F6 );
1219 KEY( VK_F7, GLUT_KEY_F7 ); KEY( VK_F8, GLUT_KEY_F8 );
1220 KEY( VK_F9, GLUT_KEY_F9 ); KEY( VK_F10, GLUT_KEY_F10 );
1221 KEY( VK_F11, GLUT_KEY_F11 ); KEY( VK_F12, GLUT_KEY_F12 );
1222 KEY( VK_PRIOR, GLUT_KEY_PAGE_UP ); KEY( VK_NEXT, GLUT_KEY_PAGE_DOWN );
1223 KEY( VK_HOME, GLUT_KEY_HOME ); KEY( VK_END, GLUT_KEY_END );
1224 KEY( VK_LEFT, GLUT_KEY_LEFT ); KEY( VK_UP, GLUT_KEY_UP );
1225 KEY( VK_RIGHT, GLUT_KEY_RIGHT ); KEY( VK_DOWN, GLUT_KEY_DOWN );
1226 KEY( VK_INSERT, GLUT_KEY_INSERT );
1229 * ...yet there is a small exception we need to have handled...
1233 * The delete key should be treated as an ASCII keypress:
1235 if( window->Callbacks.Keyboard != NULL )
1236 window->Callbacks.Keyboard( 127, window->State.MouseX, window->State.MouseY );
1240 * Execute the special callback, if present, given the conversion was a success:
1242 if( (keypress != -1) && (window->Callbacks.Special != NULL) )
1245 * Have the special callback executed:
1247 window->Callbacks.Special( keypress, window->State.MouseX, window->State.MouseY );
1251 * Thrash the modifiers register now
1253 window->State.Modifiers = 0xffffffff;
1261 * First of all, make sure that there is a window to be notified of this
1263 assert_window_registered;
1266 * Ignore the automatic key repetition if needed:
1268 if( fgState.IgnoreKeyRepeat && (lParam & KF_REPEAT) )
1272 * Clear to go with the keyboard callback, if registered:
1274 if( window->Callbacks.Keyboard != NULL )
1277 * Remember the current modifiers state
1279 window->State.Modifiers =
1280 (GetKeyState( VK_LSHIFT ) || GetKeyState( VK_RSHIFT )) ? GLUT_ACTIVE_SHIFT : 0 |
1281 (GetKeyState( VK_LCONTROL ) || GetKeyState( VK_RCONTROL )) ? GLUT_ACTIVE_CTRL : 0 |
1282 (GetKeyState( VK_LMENU ) || GetKeyState( VK_RMENU )) ? GLUT_ACTIVE_ALT : 0;
1285 * Have the special callback executed:
1287 window->Callbacks.Keyboard( wParam, window->State.MouseX, window->State.MouseY );
1290 * Thrash the modifiers register now
1292 window->State.Modifiers = 0xffffffff;
1299 * Handle unhandled messages
1301 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1309 /*** END OF FILE ***/