4 * Window management 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.
28 #define FREEGLUT_BUILDING_LIB
29 #include <GL/freeglut.h>
30 #include "fg_internal.h"
34 * TODO BEFORE THE STABLE RELEASE:
36 * fgSetupPixelFormat -- ignores the display mode settings
37 * fgOpenWindow() -- check the Win32 version, -iconic handling!
38 * fgCloseWindow() -- check the Win32 version
39 * glutCreateWindow() -- Check when default position and size is {-1,-1}
40 * glutCreateSubWindow() -- Check when default position and size is {-1,-1}
41 * glutDestroyWindow() -- check the Win32 version
42 * glutSetWindow() -- check the Win32 version
43 * glutSetWindowTitle() -- check the Win32 version
44 * glutSetIconTitle() -- check the Win32 version
45 * glutShowWindow() -- check the Win32 version
46 * glutHideWindow() -- check the Win32 version
47 * glutIconifyWindow() -- check the Win32 version
48 * glutPushWindow() -- check the Win32 version
49 * glutPopWindow() -- check the Win32 version
53 extern void fgPlatformSetWindow ( SFG_Window *window );
54 extern void fgPlatformOpenWindow( SFG_Window* window, const char* title,
55 GLboolean positionUse, int x, int y,
56 GLboolean sizeUse, int w, int h,
57 GLboolean gameMode, GLboolean isSubWindow );
58 extern void fgPlatformCloseWindow( SFG_Window* window );
59 extern void fgPlatformGlutShowWindow( void );
60 extern void fgPlatformGlutHideWindow( void );
61 extern void fgPlatformGlutIconifyWindow( void );
62 extern void fgPlatformGlutSetWindowTitle( const char* title );
63 extern void fgPlatformGlutSetIconTitle( const char* title );
64 extern void fgPlatformGlutPositionWindow( int x, int y );
65 extern void fgPlatformGlutPushWindow( void );
66 extern void fgPlatformGlutPopWindow( void );
67 extern void fgPlatformGlutFullScreen( SFG_Window *win );
68 extern void fgPlatformGlutLeaveFullScreen( SFG_Window *win );
69 extern void fgPlatformGlutFullScreenToggle( SFG_Window *win );
72 /* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
74 int fghIsLegacyContextRequested( void )
76 return fgState.MajorVersion < 2 || (fgState.MajorVersion == 2 && fgState.MinorVersion <= 1);
79 int fghNumberOfAuxBuffersRequested( void )
81 if ( fgState.DisplayMode & GLUT_AUX4 ) {
84 if ( fgState.DisplayMode & GLUT_AUX3 ) {
87 if ( fgState.DisplayMode & GLUT_AUX2 ) {
90 if ( fgState.DisplayMode & GLUT_AUX1 ) { /* NOTE: Same as GLUT_AUX! */
91 return fgState.AuxiliaryBufferNumber;
96 int fghMapBit( int mask, int from, int to )
98 return ( mask & from ) ? to : 0;
102 void fghContextCreationError( void )
104 fgError( "Unable to create OpenGL %d.%d context (flags %x, profile %x)",
105 fgState.MajorVersion, fgState.MinorVersion, fgState.ContextFlags,
106 fgState.ContextProfile );
110 /* -- SYSTEM-DEPENDENT PRIVATE FUNCTIONS ------------------------------------ */
113 * Sets the OpenGL context and the fgStructure "Current Window" pointer to
114 * the window structure passed in.
116 void fgSetWindow ( SFG_Window *window )
118 fgPlatformSetWindow ( window );
120 fgStructure.CurrentWindow = window;
124 * Opens a window. Requires a SFG_Window object created and attached
125 * to the freeglut structure. OpenGL context is created here.
127 void fgOpenWindow( SFG_Window* window, const char* title,
128 GLboolean positionUse, int x, int y,
129 GLboolean sizeUse, int w, int h,
130 GLboolean gameMode, GLboolean isSubWindow )
132 fgPlatformOpenWindow( window, title,
135 gameMode, isSubWindow );
137 fgSetWindow( window );
139 window->Window.DoubleBuffered =
140 ( fgState.DisplayMode & GLUT_DOUBLE ) ? 1 : 0;
142 #ifndef EGL_VERSION_1_0 /* No glDrawBuffer/glReadBuffer in GLES */
143 if ( ! window->Window.DoubleBuffered )
145 glDrawBuffer ( GL_FRONT );
146 glReadBuffer ( GL_FRONT );
149 window->Window.attribute_v_coord = -1;
150 window->Window.attribute_v_normal = -1;
151 window->Window.attribute_v_texture = -1;
155 window->State.NeedToInitContext = GL_TRUE;
159 * Closes a window, destroying the frame and OpenGL context
161 void fgCloseWindow( SFG_Window* window )
163 /* if we're in gamemode and we're closing the gamemode window,
164 * call glutLeaveGameMode first to make sure the gamemode is
165 * properly closed before closing the window
167 if (fgStructure.GameModeWindow != NULL && fgStructure.GameModeWindow->ID==window->ID)
170 fgPlatformCloseWindow ( window );
174 /* -- INTERFACE FUNCTIONS -------------------------------------------------- */
177 * Creates a new top-level freeglut window
179 int FGAPIENTRY glutCreateWindow( const char* title )
181 /* XXX GLUT does not exit; it simply calls "glutInit" quietly if the
182 * XXX application has not already done so. The "freeglut" community
183 * XXX decided not to go this route (freeglut-developer e-mail from
184 * XXX Steve Baker, 12/16/04, 4:22 PM CST, "Re: [Freeglut-developer]
185 * XXX Desired 'freeglut' behaviour when there is no current window"
187 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutCreateWindow" );
189 return fgCreateWindow( NULL, title, fgState.Position.Use,
190 fgState.Position.X, fgState.Position.Y,
191 fgState.Size.Use, fgState.Size.X, fgState.Size.Y,
192 GL_FALSE, GL_FALSE )->ID;
196 * This function creates a sub window.
198 int FGAPIENTRY glutCreateSubWindow( int parentID, int x, int y, int w, int h )
201 SFG_Window* window = NULL;
202 SFG_Window* parent = NULL;
204 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutCreateSubWindow" );
205 parent = fgWindowByID( parentID );
206 freeglut_return_val_if_fail( parent != NULL, 0 );
209 x = parent->State.Width + x ;
210 if ( w >= 0 ) x -= w ;
213 if ( w < 0 ) w = parent->State.Width - x + w ;
222 y = parent->State.Height + y ;
223 if ( h >= 0 ) y -= h ;
226 if ( h < 0 ) h = parent->State.Height - y + h ;
233 window = fgCreateWindow( parent, "", GL_TRUE, x, y, GL_TRUE, w, h, GL_FALSE, GL_FALSE );
240 * Destroys a window and all of its subwindows
242 void FGAPIENTRY glutDestroyWindow( int windowID )
245 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutDestroyWindow" );
246 window = fgWindowByID( windowID );
247 freeglut_return_if_fail( window != NULL );
249 fgExecutionState ExecState = fgState.ExecState;
250 fgAddToWindowDestroyList( window );
251 fgState.ExecState = ExecState;
256 * This function selects the specified window as the current window
258 void FGAPIENTRY glutSetWindow( int ID )
260 SFG_Window* window = NULL;
262 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetWindow" );
263 if( fgStructure.CurrentWindow != NULL )
264 if( fgStructure.CurrentWindow->ID == ID )
267 window = fgWindowByID( ID );
270 fgWarning( "glutSetWindow(): window ID %d not found!", ID );
274 fgSetWindow( window );
278 * This function returns the ID number of the current window, 0 if none exists
280 int FGAPIENTRY glutGetWindow( void )
282 SFG_Window *win = fgStructure.CurrentWindow;
284 * Since GLUT did not throw an error if this function was called without a prior call to
285 * "glutInit", this function shouldn't do so here. Instead let us return a zero.
286 * See Feature Request "[ 1307049 ] glutInit check".
288 if ( ! fgState.Initialised )
291 while ( win && win->IsMenu )
293 return win ? win->ID : 0;
297 * This function makes the current window visible
299 void FGAPIENTRY glutShowWindow( void )
301 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutShowWindow" );
302 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutShowWindow" );
304 fgPlatformGlutShowWindow ();
306 fgStructure.CurrentWindow->State.Redisplay = GL_TRUE;
310 * This function hides the current window
312 void FGAPIENTRY glutHideWindow( void )
314 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutHideWindow" );
315 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutHideWindow" );
317 fgPlatformGlutHideWindow ();
319 fgStructure.CurrentWindow->State.Redisplay = GL_FALSE;
323 * Iconify the current window (top-level windows only)
325 void FGAPIENTRY glutIconifyWindow( void )
327 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutIconifyWindow" );
328 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutIconifyWindow" );
330 fgPlatformGlutIconifyWindow ();
332 fgStructure.CurrentWindow->State.Redisplay = GL_FALSE;
336 * Set the current window's title
338 void FGAPIENTRY glutSetWindowTitle( const char* title )
340 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetWindowTitle" );
341 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutSetWindowTitle" );
342 if( ! fgStructure.CurrentWindow->Parent )
344 fgPlatformGlutSetWindowTitle ( title );
349 * Set the current window's iconified title
351 void FGAPIENTRY glutSetIconTitle( const char* title )
353 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetIconTitle" );
354 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutSetIconTitle" );
356 if( ! fgStructure.CurrentWindow->Parent )
358 fgPlatformGlutSetIconTitle ( title );
363 * Change the current window's size
365 void FGAPIENTRY glutReshapeWindow( int width, int height )
367 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutReshapeWindow" );
368 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutReshapeWindow" );
370 if (glutGet(GLUT_FULL_SCREEN))
372 /* Leave full screen state before resizing. */
373 glutLeaveFullScreen();
376 fgStructure.CurrentWindow->State.NeedToResize = GL_TRUE;
377 fgStructure.CurrentWindow->State.Width = width ;
378 fgStructure.CurrentWindow->State.Height = height;
382 * Change the current window's position
384 void FGAPIENTRY glutPositionWindow( int x, int y )
386 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutPositionWindow" );
387 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutPositionWindow" );
389 if (glutGet(GLUT_FULL_SCREEN))
391 /* Leave full screen state before moving. */
392 glutLeaveFullScreen();
395 fgPlatformGlutPositionWindow ( x, y );
399 * Lowers the current window (by Z order change)
401 void FGAPIENTRY glutPushWindow( void )
403 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutPushWindow" );
404 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutPushWindow" );
406 fgPlatformGlutPushWindow ();
410 * Raises the current window (by Z order change)
412 void FGAPIENTRY glutPopWindow( void )
414 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutPopWindow" );
415 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutPopWindow" );
417 fgPlatformGlutPopWindow ();
421 * Resize the current window so that it fits the whole screen
423 void FGAPIENTRY glutFullScreen( void )
427 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutFullScreen" );
428 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutFullScreen" );
430 win = fgStructure.CurrentWindow;
434 /* Child windows cannot be made fullscreen, consistent with GLUT's behavior
435 * Also, what would it mean for a child window to be fullscreen, given that it
436 * is confined to its parent?
438 fgWarning("glutFullScreen called on a child window, ignoring...");
441 else if (fgStructure.GameModeWindow != NULL && fgStructure.GameModeWindow->ID==win->ID && win->State.IsFullscreen)
443 /* Ignore fullscreen call on GameMode window, those are always fullscreen already
444 * only exception is during first entering GameMode
449 fgPlatformGlutFullScreen ( win );
453 * If we are fullscreen, resize the current window back to its original size
455 void FGAPIENTRY glutLeaveFullScreen( void )
459 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutFullScreen" );
460 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutFullScreen" );
462 win = fgStructure.CurrentWindow;
464 fgPlatformGlutLeaveFullScreen ( win );
468 * Toggle the window's full screen state.
470 void FGAPIENTRY glutFullScreenToggle( void )
474 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutFullScreenToggle" );
475 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutFullScreenToggle" );
477 win = fgStructure.CurrentWindow;
479 fgPlatformGlutFullScreenToggle ( win );
483 * A.Donev: Set and retrieve the window's user data
485 void* FGAPIENTRY glutGetWindowData( void )
487 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGetWindowData" );
488 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutGetWindowData" );
489 return fgStructure.CurrentWindow->UserData;
492 void FGAPIENTRY glutSetWindowData(void* data)
494 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetWindowData" );
495 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutSetWindowData" );
496 fgStructure.CurrentWindow->UserData = data;
499 /*** END OF FILE ***/