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 #include <GL/freeglut.h>
29 #include "freeglut_internal.h"
31 #if TARGET_HOST_POSIX_X11
32 #include <limits.h> /* LONG_MAX */
35 #if defined(_WIN32_WCE)
36 # include <Aygshell.h>
37 # ifdef FREEGLUT_LIB_PRAGMAS
38 # pragma comment( lib, "Aygshell.lib" )
41 static wchar_t* fghWstrFromStr(const char* str)
43 int i,len=strlen(str);
44 wchar_t* wstr = (wchar_t*)malloc(2*len+2);
51 #endif /* defined(_WIN32_WCE) */
54 * TODO BEFORE THE STABLE RELEASE:
56 * fgChooseFBConfig() -- OK, but what about glutInitDisplayString()?
57 * fgSetupPixelFormat -- ignores the display mode settings
58 * fgOpenWindow() -- check the Win32 version, -iconic handling!
59 * fgCloseWindow() -- check the Win32 version
60 * glutCreateWindow() -- Check when default position and size is {-1,-1}
61 * glutCreateSubWindow() -- Check when default position and size is {-1,-1}
62 * glutDestroyWindow() -- check the Win32 version
63 * glutSetWindow() -- check the Win32 version
64 * glutGetWindow() -- OK
65 * glutSetWindowTitle() -- check the Win32 version
66 * glutSetIconTitle() -- check the Win32 version
67 * glutShowWindow() -- check the Win32 version
68 * glutHideWindow() -- check the Win32 version
69 * glutIconifyWindow() -- check the Win32 version
70 * glutReshapeWindow() -- check the Win32 version
71 * glutPositionWindow() -- check the Win32 version
72 * glutPushWindow() -- check the Win32 version
73 * glutPopWindow() -- check the Win32 version
76 /* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
79 * Chooses a visual basing on the current display mode settings
81 #if TARGET_HOST_POSIX_X11
83 GLXFBConfig* fgChooseFBConfig( void )
85 GLboolean wantIndexedMode = GL_FALSE;
89 /* First we have to process the display mode settings... */
91 * XXX Why is there a semi-colon in this #define? The code
92 * XXX that uses the macro seems to always add more semicolons...
94 #define ATTRIB(a) attributes[where++]=a;
95 #define ATTRIB_VAL(a,v) {ATTRIB(a); ATTRIB(v);}
97 if( fgState.DisplayMode & GLUT_INDEX )
99 ATTRIB_VAL( GLX_BUFFER_SIZE, 8 );
100 /* Buffer size is selected later. */
102 ATTRIB_VAL( GLX_RENDER_TYPE, GLX_COLOR_INDEX_BIT );
103 wantIndexedMode = GL_TRUE;
107 ATTRIB_VAL( GLX_RED_SIZE, 1 );
108 ATTRIB_VAL( GLX_GREEN_SIZE, 1 );
109 ATTRIB_VAL( GLX_BLUE_SIZE, 1 );
110 if( fgState.DisplayMode & GLUT_ALPHA )
111 ATTRIB_VAL( GLX_ALPHA_SIZE, 1 );
114 if( fgState.DisplayMode & GLUT_DOUBLE )
115 ATTRIB_VAL( GLX_DOUBLEBUFFER, True );
117 if( fgState.DisplayMode & GLUT_STEREO )
118 ATTRIB_VAL( GLX_STEREO, True );
120 if( fgState.DisplayMode & GLUT_DEPTH )
121 ATTRIB_VAL( GLX_DEPTH_SIZE, 1 );
123 if( fgState.DisplayMode & GLUT_STENCIL )
124 ATTRIB_VAL( GLX_STENCIL_SIZE, 1 );
126 if( fgState.DisplayMode & GLUT_ACCUM )
128 ATTRIB_VAL( GLX_ACCUM_RED_SIZE, 1 );
129 ATTRIB_VAL( GLX_ACCUM_GREEN_SIZE, 1 );
130 ATTRIB_VAL( GLX_ACCUM_BLUE_SIZE, 1 );
131 if( fgState.DisplayMode & GLUT_ALPHA )
132 ATTRIB_VAL( GLX_ACCUM_ALPHA_SIZE, 1 );
135 if ((fgState.DisplayMode & GLUT_AUX)
136 || (fgState.DisplayMode & GLUT_AUX1)
137 || (fgState.DisplayMode & GLUT_AUX2)
138 || (fgState.DisplayMode & GLUT_AUX3)
139 || (fgState.DisplayMode & GLUT_AUX4))
141 ATTRIB_VAL(GLX_AUX_BUFFERS, fgState.AuxiliaryBufferNumber)
144 if (fgState.DisplayMode & GLUT_MULTISAMPLE)
146 ATTRIB_VAL(GLX_SAMPLE_BUFFERS, 1)
147 ATTRIB_VAL(GLX_SAMPLES, fgState.SampleNumber)
150 /* Push a null at the end of the list */
154 GLXFBConfig * fbconfigArray; /* Array of FBConfigs */
155 GLXFBConfig * fbconfig; /* The FBConfig we want */
156 int fbconfigArraySize; /* Number of FBConfigs in the array */
159 /* Get all FBConfigs that match "attributes". */
160 fbconfigArray = glXChooseFBConfig( fgDisplay.Display,
163 &fbconfigArraySize );
165 if (fbconfigArray != NULL)
167 int result; /* Returned by glXGetFBConfigAttrib, not checked. */
170 if( wantIndexedMode )
173 * In index mode, we want the largest buffer size, i.e. visual
174 * depth. Here, FBConfigs are sorted by increasing buffer size
175 * first, so FBConfigs with the largest size come last.
178 int bufferSizeMin, bufferSizeMax;
180 /* Get bufferSizeMin. */
182 glXGetFBConfigAttrib( fgDisplay.Display,
186 /* Get bufferSizeMax. */
188 glXGetFBConfigAttrib( fgDisplay.Display,
189 fbconfigArray[fbconfigArraySize - 1],
193 if (bufferSizeMax > bufferSizeMin)
196 * Free and reallocate fbconfigArray, keeping only FBConfigs
197 * with the largest buffer size.
199 XFree(fbconfigArray);
201 /* Add buffer size token at the end of the list. */
203 ATTRIB_VAL( GLX_BUFFER_SIZE, bufferSizeMax );
206 fbconfigArray = glXChooseFBConfig( fgDisplay.Display,
209 &fbconfigArraySize );
214 * We now have an array of FBConfigs, the first one being the "best"
215 * one. So we should return only this FBConfig:
219 * - pick the XID of the FBConfig we want
220 * result = glXGetFBConfigAttrib( fgDisplay.Display,
226 * XFree(fbconfigArray);
228 * - reset "attributes" with the XID
230 * ATTRIB_VAL( GLX_FBCONFIG_ID, fbconfigXID );
233 * - get our FBConfig only
234 * fbconfig = glXChooseFBConfig( fgDisplay.Display,
237 * &fbconfigArraySize );
239 * However, for some configurations (for instance multisampling with
240 * Mesa 6.5.2 and ATI drivers), this does not work:
241 * glXChooseFBConfig returns NULL, whereas fbconfigXID is a valid
242 * XID. Further investigation is needed.
244 * So, for now, we return the whole array of FBConfigs. This should
245 * not produce any side effects elsewhere.
247 fbconfig = fbconfigArray;
257 #endif /* TARGET_HOST_POSIX_X11 */
260 * Setup the pixel format for a Win32 window
262 #if TARGET_HOST_MS_WINDOWS
263 /* The following include file is available from SGI but is not standard:
264 * #include <GL/wglext.h>
265 * So we copy the necessary parts out of it.
266 * XXX: should local definitions for extensions be put in a separate include file?
268 typedef const char * (WINAPI * PFNWGLGETEXTENSIONSSTRINGARBPROC) (HDC hdc);
270 typedef BOOL (WINAPI * PFNWGLCHOOSEPIXELFORMATARBPROC) (HDC hdc, const int *piAttribIList, const FLOAT *pfAttribFList, UINT nMaxFormats, int *piFormats, UINT *nNumFormats);
272 #define WGL_DRAW_TO_WINDOW_ARB 0x2001
273 #define WGL_ACCELERATION_ARB 0x2003
274 #define WGL_SUPPORT_OPENGL_ARB 0x2010
275 #define WGL_DOUBLE_BUFFER_ARB 0x2011
276 #define WGL_COLOR_BITS_ARB 0x2014
277 #define WGL_ALPHA_BITS_ARB 0x201B
278 #define WGL_DEPTH_BITS_ARB 0x2022
279 #define WGL_STENCIL_BITS_ARB 0x2023
280 #define WGL_FULL_ACCELERATION_ARB 0x2027
282 #define WGL_SAMPLE_BUFFERS_ARB 0x2041
283 #define WGL_SAMPLES_ARB 0x2042
286 GLboolean fgSetupPixelFormat( SFG_Window* window, GLboolean checkOnly,
287 unsigned char layer_type )
289 #if defined(_WIN32_WCE)
292 PIXELFORMATDESCRIPTOR* ppfd, pfd;
293 int flags, pixelformat;
295 freeglut_return_val_if_fail( window != NULL, 0 );
296 flags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
297 if( fgState.DisplayMode & GLUT_DOUBLE )
298 flags |= PFD_DOUBLEBUFFER;
300 if( fgState.DisplayMode & GLUT_STEREO )
303 #if defined(_MSC_VER)
304 #pragma message( "fgSetupPixelFormat(): there is still some work to do here!" )
307 /* Specify which pixel format do we opt for... */
308 pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
312 if( fgState.DisplayMode & GLUT_INDEX )
314 pfd.iPixelType = PFD_TYPE_COLORINDEX;
322 pfd.iPixelType = PFD_TYPE_RGBA;
326 if ( fgState.DisplayMode & GLUT_ALPHA )
338 pfd.cAccumRedBits = 0;
339 pfd.cAccumGreenBits = 0;
340 pfd.cAccumBlueBits = 0;
341 pfd.cAccumAlphaBits = 0;
344 pfd.cStencilBits = 0;
347 pfd.cStencilBits = 8;
349 if( fgState.DisplayMode & GLUT_AUX4 )
351 else if( fgState.DisplayMode & GLUT_AUX3 )
353 else if( fgState.DisplayMode & GLUT_AUX2 )
355 else if( fgState.DisplayMode & GLUT_AUX1 )
360 pfd.iLayerType = layer_type;
363 pfd.dwVisibleMask = 0;
364 pfd.dwDamageMask = 0;
366 pfd.cColorBits = (BYTE) GetDeviceCaps( window->Window.Device, BITSPIXEL );
369 pixelformat = ChoosePixelFormat( window->Window.Device, ppfd );
371 /* windows hack for multismapling */
372 if (fgState.DisplayMode&GLUT_MULTISAMPLE)
374 PFNWGLGETEXTENSIONSSTRINGARBPROC wglGetEntensionsStringARB=NULL;
375 HGLRC rc, rc_before=wglGetCurrentContext();
377 HDC hDC, hDC_before=wglGetCurrentDC();
381 /* create a dummy window */
382 ZeroMemory(&wndCls, sizeof(wndCls));
383 wndCls.lpfnWndProc = DefWindowProc;
384 wndCls.hInstance = fgDisplay.Instance;
385 wndCls.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
386 wndCls.lpszClassName = _T("FREEGLUT_dummy");
387 atom = RegisterClass( &wndCls );
389 hWnd=CreateWindow((LPCSTR)atom, _T(""), WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_OVERLAPPEDWINDOW , 0,0,0,0, 0, 0, fgDisplay.Instance, 0 );
391 SetPixelFormat( hDC, pixelformat, ppfd );
393 rc = wglCreateContext( hDC );
394 wglMakeCurrent(hDC, rc);
396 wglGetEntensionsStringARB=(PFNWGLGETEXTENSIONSSTRINGARBPROC)wglGetProcAddress("wglGetExtensionsStringARB");
397 if (wglGetEntensionsStringARB)
399 const char * pWglExtString=wglGetEntensionsStringARB(hDC);
402 if (strstr(pWglExtString, "WGL_ARB_multisample"))
404 int pAttributes[100];
408 float fAttributes[] = {0,0};
410 PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormatARBProc=NULL;
412 wglChoosePixelFormatARBProc=(PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress("wglChoosePixelFormatARB");
413 if ( wglChoosePixelFormatARBProc )
415 pAttributes[iCounter++]=WGL_DRAW_TO_WINDOW_ARB; pAttributes[iCounter++]=GL_TRUE;
416 pAttributes[iCounter++]=WGL_SUPPORT_OPENGL_ARB; pAttributes[iCounter++]=GL_TRUE;
417 pAttributes[iCounter++]=WGL_ACCELERATION_ARB; pAttributes[iCounter++]=WGL_FULL_ACCELERATION_ARB;
419 pAttributes[iCounter++]=WGL_COLOR_BITS_ARB; pAttributes[iCounter++]=pfd.cColorBits ;
420 pAttributes[iCounter++]=WGL_ALPHA_BITS_ARB; pAttributes[iCounter++]=pfd.cAlphaBits;
421 pAttributes[iCounter++]=WGL_DEPTH_BITS_ARB; pAttributes[iCounter++]=pfd.cDepthBits;
422 pAttributes[iCounter++]=WGL_STENCIL_BITS_ARB; pAttributes[iCounter++]=pfd.cStencilBits;
424 pAttributes[iCounter++]=WGL_DOUBLE_BUFFER_ARB; pAttributes[iCounter++]=(fgState.DisplayMode & GLUT_DOUBLE)!=0;
425 pAttributes[iCounter++]=WGL_SAMPLE_BUFFERS_ARB; pAttributes[iCounter++]=GL_TRUE;
426 pAttributes[iCounter++]=WGL_SAMPLES_ARB; pAttributes[iCounter++]=4;
427 pAttributes[iCounter++]=0; pAttributes[iCounter++]=0; /* terminator */
429 bValid = wglChoosePixelFormatARBProc(window->Window.Device,pAttributes,fAttributes,1,&iPixelFormat,&numFormats);
431 if (bValid && numFormats>0)
432 pixelformat=iPixelFormat;
435 wglMakeCurrent( hDC_before, rc_before);
436 wglDeleteContext(rc);
437 ReleaseDC(hWnd, hDC);
439 UnregisterClass(_T("FREEGLUT_dummy"), fgDisplay.Instance);
444 if( pixelformat == 0 )
449 return SetPixelFormat( window->Window.Device, pixelformat, ppfd );
450 #endif /* defined(_WIN32_WCE) */
452 #endif /* TARGET_HOST_MS_WINDOWS */
455 * Sets the OpenGL context and the fgStructure "Current Window" pointer to
456 * the window structure passed in.
458 void fgSetWindow ( SFG_Window *window )
460 #if TARGET_HOST_POSIX_X11
462 glXMakeContextCurrent(
464 window->Window.Handle,
465 window->Window.Handle,
466 window->Window.Context
468 #elif TARGET_HOST_MS_WINDOWS
469 if( fgStructure.CurrentWindow )
470 ReleaseDC( fgStructure.CurrentWindow->Window.Handle,
471 fgStructure.CurrentWindow->Window.Device );
475 window->Window.Device = GetDC( window->Window.Handle );
477 window->Window.Device,
478 window->Window.Context
482 fgStructure.CurrentWindow = window;
487 #if TARGET_HOST_POSIX_X11
489 #ifndef GLX_CONTEXT_MAJOR_VERSION_ARB
490 #define GLX_CONTEXT_MAJOR_VERSION_ARB 0x2091
493 #ifndef GLX_CONTEXT_MINOR_VERSION_ARB
494 #define GLX_CONTEXT_MINOR_VERSION_ARB 0x2092
497 #ifndef GLX_CONTEXT_FLAGS_ARB
498 #define GLX_CONTEXT_FLAGS_ARB 0x2094
501 #ifndef GLX_CONTEXT_DEBUG_BIT_ARB
502 #define GLX_CONTEXT_DEBUG_BIT_ARB 0x0001
505 #ifndef GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB
506 #define GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x0002
509 typedef GLXContext (*CreateContextAttribsProc)(Display *dpy, GLXFBConfig config,
510 GLXContext share_list, Bool direct,
511 const int *attrib_list);
513 static GLXContext fghCreateNewContext( SFG_Window* window )
515 /* for color model calculation */
516 int menu = ( window->IsMenu && !fgStructure.MenuContext );
517 int index_mode = ( fgState.DisplayMode & GLUT_INDEX );
519 /* "classic" context creation */
520 Display *dpy = fgDisplay.Display;
521 GLXFBConfig config = *(window->Window.FBConfig);
522 int render_type = ( !menu && index_mode ) ? GLX_COLOR_INDEX_TYPE : GLX_RGBA_TYPE;
523 GLXContext share_list = NULL;
524 Bool direct = ( fgState.DirectContext != GLUT_FORCE_INDIRECT_CONTEXT );
527 /* new context creation */
529 CreateContextAttribsProc createContextAttribs;
531 /* If nothing fancy has been required, simply use the old context creation GLX API entry */
532 if ( fgState.MajorVersion == 1 && fgState.MinorVersion == 0 && fgState.ContextFlags == 0)
534 context = glXCreateNewContext( dpy, config, render_type, share_list, direct );
535 if ( context == NULL ) {
536 fgError( "could not create new OpenGL context" );
541 /* color index mode is not available anymore with OpenGL 3.0 */
542 if ( render_type == GLX_COLOR_INDEX_TYPE ) {
543 fgWarning( "color index mode is deprecated, using RGBA mode" );
546 attribs[0] = GLX_CONTEXT_MAJOR_VERSION_ARB;
547 attribs[1] = fgState.MajorVersion;
548 attribs[2] = GLX_CONTEXT_MINOR_VERSION_ARB;
549 attribs[3] = fgState.MinorVersion;
550 attribs[4] = GLX_CONTEXT_FLAGS_ARB;
551 attribs[5] = ((fgState.ContextFlags & GLUT_DEBUG) ? GLX_CONTEXT_DEBUG_BIT_ARB : 0) |
552 ((fgState.ContextFlags & GLUT_FORWARD_COMPATIBLE) ? GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB : 0);
555 createContextAttribs = (CreateContextAttribsProc) fghGetProcAddress( "glXCreateContextAttribsARB" );
556 if ( createContextAttribs == NULL ) {
557 fgError( "glXCreateContextAttribsARB not found" );
560 context = createContextAttribs( dpy, config, share_list, direct, attribs );
561 if ( context == NULL ) {
562 fgError( "could not create new OpenGL %d.%d context (flags %x)",
563 fgState.MajorVersion, fgState.MinorVersion, fgState.ContextFlags );
571 * Opens a window. Requires a SFG_Window object created and attached
572 * to the freeglut structure. OpenGL context is created here.
574 void fgOpenWindow( SFG_Window* window, const char* title,
575 GLboolean positionUse, int x, int y,
576 GLboolean sizeUse, int w, int h,
577 GLboolean gameMode, GLboolean isSubWindow )
579 #if TARGET_HOST_POSIX_X11
580 XVisualInfo * visualInfo;
581 XSetWindowAttributes winAttr;
582 XTextProperty textProperty;
583 XSizeHints sizeHints;
586 unsigned int current_DisplayMode = fgState.DisplayMode ;
588 /* Save the display mode if we are creating a menu window */
589 if( window->IsMenu && ( ! fgStructure.MenuContext ) )
590 fgState.DisplayMode = GLUT_DOUBLE | GLUT_RGB ;
592 window->Window.FBConfig = fgChooseFBConfig( );
594 if( window->IsMenu && ( ! fgStructure.MenuContext ) )
595 fgState.DisplayMode = current_DisplayMode ;
597 if( ! window->Window.FBConfig )
600 * The "fgChooseFBConfig" returned a null meaning that the visual
601 * context is not available.
602 * Try a couple of variations to see if they will work.
604 if( !( fgState.DisplayMode & GLUT_DOUBLE ) )
606 fgState.DisplayMode |= GLUT_DOUBLE ;
607 window->Window.FBConfig = fgChooseFBConfig( );
608 fgState.DisplayMode &= ~GLUT_DOUBLE;
611 if( fgState.DisplayMode & GLUT_MULTISAMPLE )
613 fgState.DisplayMode &= ~GLUT_MULTISAMPLE ;
614 window->Window.FBConfig = fgChooseFBConfig( );
615 fgState.DisplayMode |= GLUT_MULTISAMPLE;
619 FREEGLUT_INTERNAL_ERROR_EXIT( window->Window.FBConfig != NULL,
620 "FBConfig with necessary capabilities not found", "fgOpenWindow" );
622 /* Get the X visual. */
623 visualInfo = glXGetVisualFromFBConfig( fgDisplay.Display,
624 *(window->Window.FBConfig) );
627 * XXX HINT: the masks should be updated when adding/removing callbacks.
628 * XXX This might speed up message processing. Is that true?
630 * XXX A: Not appreciably, but it WILL make it easier to debug.
631 * XXX Try tracing old GLUT and try tracing freeglut. Old GLUT
632 * XXX turns off events that it doesn't need and is a whole lot
633 * XXX more pleasant to trace. (Think mouse-motion! Tons of
634 * XXX ``bonus'' GUI events stream in.)
637 StructureNotifyMask | SubstructureNotifyMask | ExposureMask |
638 ButtonPressMask | ButtonReleaseMask | KeyPressMask | KeyReleaseMask |
639 VisibilityChangeMask | EnterWindowMask | LeaveWindowMask |
640 PointerMotionMask | ButtonMotionMask;
641 winAttr.background_pixmap = None;
642 winAttr.background_pixel = 0;
643 winAttr.border_pixel = 0;
645 winAttr.colormap = XCreateColormap(
646 fgDisplay.Display, fgDisplay.RootWindow,
647 visualInfo->visual, AllocNone
650 mask = CWBackPixmap | CWBorderPixel | CWColormap | CWEventMask;
652 if( window->IsMenu || ( gameMode == GL_TRUE ) )
654 winAttr.override_redirect = True;
655 mask |= CWOverrideRedirect;
659 x = y = -1; /* default window position */
661 w = h = 300; /* default window size */
663 window->Window.Handle = XCreateWindow(
665 window->Parent == NULL ? fgDisplay.RootWindow :
666 window->Parent->Window.Handle,
668 visualInfo->depth, InputOutput,
669 visualInfo->visual, mask,
674 * The GLX context creation, possibly trying the direct context rendering
675 * or else use the current context if the user has so specified
681 * If there isn't already an OpenGL rendering context for menu
684 if( !fgStructure.MenuContext )
686 fgStructure.MenuContext =
687 (SFG_MenuContext *)malloc( sizeof(SFG_MenuContext) );
688 fgStructure.MenuContext->MContext = fghCreateNewContext( window );
691 /* window->Window.Context = fgStructure.MenuContext->MContext; */
692 window->Window.Context = fghCreateNewContext( window );
694 else if( fgState.UseCurrentContext )
696 window->Window.Context = glXGetCurrentContext( );
698 if( ! window->Window.Context )
699 window->Window.Context = fghCreateNewContext( window );
702 window->Window.Context = fghCreateNewContext( window );
704 #if !defined( __FreeBSD__ ) && !defined( __NetBSD__ )
705 if( !glXIsDirect( fgDisplay.Display, window->Window.Context ) )
707 if( fgState.DirectContext == GLUT_FORCE_DIRECT_CONTEXT )
708 fgError( "Unable to force direct context rendering for window '%s'",
714 * XXX Assume the new window is visible by default
715 * XXX Is this a safe assumption?
717 window->State.Visible = GL_TRUE;
721 sizeHints.flags |= USPosition;
723 sizeHints.flags |= USSize;
726 * Fill in the size hints values now (the x, y, width and height
727 * settings are obsolete, are there any more WMs that support them?)
728 * Unless the X servers actually stop supporting these, we should
729 * continue to fill them in. It is *not* our place to tell the user
730 * that they should replace a window manager that they like, and which
731 * works, just because *we* think that it's not "modern" enough.
736 sizeHints.height = h;
738 wmHints.flags = StateHint;
739 wmHints.initial_state = fgState.ForceIconic ? IconicState : NormalState;
740 /* Prepare the window and iconified window names... */
741 XStringListToTextProperty( (char **) &title, 1, &textProperty );
745 window->Window.Handle,
754 XFree( textProperty.value );
756 XSetWMProtocols( fgDisplay.Display, window->Window.Handle,
757 &fgDisplay.DeleteWindow, 1 );
759 glXMakeContextCurrent(
761 window->Window.Handle,
762 window->Window.Handle,
763 window->Window.Context
766 XMapWindow( fgDisplay.Display, window->Window.Handle );
770 #elif TARGET_HOST_MS_WINDOWS
778 /* Grab the window class we have registered on glutInit(): */
779 atom = GetClassInfo( fgDisplay.Instance, _T("FREEGLUT"), &wc );
780 FREEGLUT_INTERNAL_ERROR_EXIT ( atom, "Window Class Info Not Found",
785 FREEGLUT_INTERNAL_ERROR_EXIT ( window->Parent == NULL,
786 "Game mode being invoked on a subwindow",
790 * Set the window creation flags appropriately to make the window
793 flags = WS_POPUP | WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_VISIBLE;
797 int worig = w, horig = h;
799 #if !defined(_WIN32_WCE)
800 if ( ( ! isSubWindow ) && ( ! window->IsMenu ) )
803 * Update the window dimensions, taking account of window
804 * decorations. "freeglut" is to create the window with the
805 * outside of its border at (x,y) and with dimensions (w,h).
807 w += (GetSystemMetrics( SM_CXSIZEFRAME ) )*2;
808 h += (GetSystemMetrics( SM_CYSIZEFRAME ) )*2 +
809 GetSystemMetrics( SM_CYCAPTION );
811 #endif /* defined(_WIN32_WCE) */
818 /* setting State.Width/Height to call resize callback later */
821 if( ! window->IsMenu )
826 else /* fail safe - Windows can make a window of size (0, 0) */
827 w = h = 300; /* default window size */
828 window->State.Width = window->State.Height = -1;
832 window->State.Width = worig;
833 window->State.Height = horig;
837 * There's a small difference between creating the top, child and
840 flags = WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_VISIBLE;
842 if ( window->IsMenu )
845 exFlags |= WS_EX_TOOLWINDOW;
847 #if !defined(_WIN32_WCE)
848 else if( window->Parent == NULL )
849 flags |= WS_OVERLAPPEDWINDOW;
855 #if defined(_WIN32_WCE)
857 wchar_t* wstr = fghWstrFromStr(title);
859 window->Window.Handle = CreateWindow(
862 WS_VISIBLE | WS_POPUP,
872 SHFullScreen(window->Window.Handle, SHFS_HIDESTARTICON);
873 SHFullScreen(window->Window.Handle, SHFS_HIDESIPBUTTON);
874 SHFullScreen(window->Window.Handle, SHFS_HIDETASKBAR);
875 MoveWindow(window->Window.Handle, 0, 0, 240, 320, TRUE);
876 ShowWindow(window->Window.Handle, SW_SHOW);
877 UpdateWindow(window->Window.Handle);
880 window->Window.Handle = CreateWindowEx(
886 (HWND) window->Parent == NULL ? NULL : window->Parent->Window.Handle,
891 #endif /* defined(_WIN32_WCE) */
893 if( !( window->Window.Handle ) )
894 fgError( "Failed to create a window (%s)!", title );
896 /* Make a menu window always on top - fix Feature Request 947118 */
897 if( window->IsMenu || gameMode )
899 window->Window.Handle,
902 SWP_NOMOVE | SWP_NOSIZE
905 /* Hack to remove the caption (title bar) and/or border
906 * and all the system menu controls.
908 WindowStyle = GetWindowLong(window->Window.Handle, GWL_STYLE);
909 if ( fgState.DisplayMode & GLUT_CAPTIONLESS )
911 SetWindowLong ( window->Window.Handle, GWL_STYLE,
912 WindowStyle & ~(WS_DLGFRAME | WS_SYSMENU | WS_MINIMIZEBOX | WS_MAXIMIZEBOX));
914 else if ( fgState.DisplayMode & GLUT_BORDERLESS )
916 SetWindowLong ( window->Window.Handle, GWL_STYLE,
917 WindowStyle & ~(WS_BORDER | WS_SYSMENU | WS_MINIMIZEBOX | WS_MAXIMIZEBOX));
919 /* SetWindowPos(window->Window.Handle, NULL, 0, 0, 0, 0,
920 SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED); */
923 #if defined(_WIN32_WCE)
924 ShowWindow( window->Window.Handle, SW_SHOW );
926 ShowWindow( window->Window.Handle,
927 fgState.ForceIconic ? SW_SHOWMINIMIZED : SW_SHOW );
928 #endif /* defined(_WIN32_WCE) */
930 UpdateWindow( window->Window.Handle );
931 ShowCursor( TRUE ); /* XXX Old comments say "hide cursor"! */
935 fgSetWindow( window );
937 window->Window.DoubleBuffered =
938 ( fgState.DisplayMode & GLUT_DOUBLE ) ? 1 : 0;
940 if ( ! window->Window.DoubleBuffered )
942 glDrawBuffer ( GL_FRONT );
943 glReadBuffer ( GL_FRONT );
948 * Closes a window, destroying the frame and OpenGL context
950 void fgCloseWindow( SFG_Window* window )
952 #if TARGET_HOST_POSIX_X11
954 glXDestroyContext( fgDisplay.Display, window->Window.Context );
955 XFree( window->Window.FBConfig );
956 XDestroyWindow( fgDisplay.Display, window->Window.Handle );
957 /* XFlush( fgDisplay.Display ); */ /* XXX Shouldn't need this */
959 #elif TARGET_HOST_MS_WINDOWS
961 /* Make sure we don't close a window with current context active */
962 if( fgStructure.CurrentWindow == window )
963 wglMakeCurrent( NULL, NULL );
966 * Step through the list of windows. If the rendering context
967 * is not being used by another window, then we delete it.
973 for( iter = (SFG_Window *)fgStructure.Windows.First;
975 iter = (SFG_Window *)iter->Node.Next )
977 if( ( iter->Window.Context == window->Window.Context ) &&
983 wglDeleteContext( window->Window.Context );
986 DestroyWindow( window->Window.Handle );
991 /* -- INTERFACE FUNCTIONS -------------------------------------------------- */
994 * Creates a new top-level freeglut window
996 int FGAPIENTRY glutCreateWindow( const char* title )
998 /* XXX GLUT does not exit; it simply calls "glutInit" quietly if the
999 * XXX application has not already done so. The "freeglut" community
1000 * XXX decided not to go this route (freeglut-developer e-mail from
1001 * XXX Steve Baker, 12/16/04, 4:22 PM CST, "Re: [Freeglut-developer]
1002 * XXX Desired 'freeglut' behaviour when there is no current window"
1004 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutCreateWindow" );
1006 return fgCreateWindow( NULL, title, fgState.Position.Use,
1007 fgState.Position.X, fgState.Position.Y,
1008 fgState.Size.Use, fgState.Size.X, fgState.Size.Y,
1009 GL_FALSE, GL_FALSE )->ID;
1013 * This function creates a sub window.
1015 int FGAPIENTRY glutCreateSubWindow( int parentID, int x, int y, int w, int h )
1018 SFG_Window* window = NULL;
1019 SFG_Window* parent = NULL;
1021 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutCreateSubWindow" );
1022 parent = fgWindowByID( parentID );
1023 freeglut_return_val_if_fail( parent != NULL, 0 );
1026 x = parent->State.Width + x ;
1027 if ( w >= 0 ) x -= w ;
1030 if ( w < 0 ) w = parent->State.Width - x + w ;
1039 y = parent->State.Height + y ;
1040 if ( h >= 0 ) y -= h ;
1043 if ( h < 0 ) h = parent->State.Height - y + h ;
1050 window = fgCreateWindow( parent, "", GL_TRUE, x, y, GL_TRUE, w, h, GL_FALSE, GL_FALSE );
1057 * Destroys a window and all of its subwindows
1059 void FGAPIENTRY glutDestroyWindow( int windowID )
1062 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutDestroyWindow" );
1063 window = fgWindowByID( windowID );
1064 freeglut_return_if_fail( window != NULL );
1066 fgExecutionState ExecState = fgState.ExecState;
1067 fgAddToWindowDestroyList( window );
1068 fgState.ExecState = ExecState;
1073 * This function selects the current window
1075 void FGAPIENTRY glutSetWindow( int ID )
1077 SFG_Window* window = NULL;
1079 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetWindow" );
1080 if( fgStructure.CurrentWindow != NULL )
1081 if( fgStructure.CurrentWindow->ID == ID )
1084 window = fgWindowByID( ID );
1085 if( window == NULL )
1087 fgWarning( "glutSetWindow(): window ID %d not found!", ID );
1091 fgSetWindow( window );
1095 * This function returns the ID number of the current window, 0 if none exists
1097 int FGAPIENTRY glutGetWindow( void )
1099 SFG_Window *win = fgStructure.CurrentWindow;
1101 * Since GLUT did not throw an error if this function was called without a prior call to
1102 * "glutInit", this function shouldn't do so here. Instead let us return a zero.
1103 * See Feature Request "[ 1307049 ] glutInit check".
1105 if ( ! fgState.Initialised )
1108 while ( win && win->IsMenu )
1110 return win ? win->ID : 0;
1114 * This function makes the current window visible
1116 void FGAPIENTRY glutShowWindow( void )
1118 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutShowWindow" );
1119 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutShowWindow" );
1121 #if TARGET_HOST_POSIX_X11
1123 XMapWindow( fgDisplay.Display, fgStructure.CurrentWindow->Window.Handle );
1124 XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
1126 #elif TARGET_HOST_MS_WINDOWS
1128 ShowWindow( fgStructure.CurrentWindow->Window.Handle, SW_SHOW );
1132 fgStructure.CurrentWindow->State.Redisplay = GL_TRUE;
1136 * This function hides the current window
1138 void FGAPIENTRY glutHideWindow( void )
1140 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutHideWindow" );
1141 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutHideWindow" );
1143 #if TARGET_HOST_POSIX_X11
1145 if( fgStructure.CurrentWindow->Parent == NULL )
1146 XWithdrawWindow( fgDisplay.Display,
1147 fgStructure.CurrentWindow->Window.Handle,
1150 XUnmapWindow( fgDisplay.Display,
1151 fgStructure.CurrentWindow->Window.Handle );
1152 XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
1154 #elif TARGET_HOST_MS_WINDOWS
1156 ShowWindow( fgStructure.CurrentWindow->Window.Handle, SW_HIDE );
1160 fgStructure.CurrentWindow->State.Redisplay = GL_FALSE;
1164 * Iconify the current window (top-level windows only)
1166 void FGAPIENTRY glutIconifyWindow( void )
1168 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutIconifyWindow" );
1169 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutIconifyWindow" );
1171 fgStructure.CurrentWindow->State.Visible = GL_FALSE;
1172 #if TARGET_HOST_POSIX_X11
1174 XIconifyWindow( fgDisplay.Display, fgStructure.CurrentWindow->Window.Handle,
1176 XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
1178 #elif TARGET_HOST_MS_WINDOWS
1180 ShowWindow( fgStructure.CurrentWindow->Window.Handle, SW_MINIMIZE );
1184 fgStructure.CurrentWindow->State.Redisplay = GL_FALSE;
1188 * Set the current window's title
1190 void FGAPIENTRY glutSetWindowTitle( const char* title )
1192 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetWindowTitle" );
1193 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutSetWindowTitle" );
1194 if( ! fgStructure.CurrentWindow->Parent )
1196 #if TARGET_HOST_POSIX_X11
1200 text.value = (unsigned char *) title;
1201 text.encoding = XA_STRING;
1203 text.nitems = strlen( title );
1207 fgStructure.CurrentWindow->Window.Handle,
1211 XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
1213 #elif TARGET_HOST_MS_WINDOWS
1216 wchar_t* wstr = fghWstrFromStr(title);
1217 SetWindowText( fgStructure.CurrentWindow->Window.Handle, wstr );
1221 SetWindowText( fgStructure.CurrentWindow->Window.Handle, title );
1229 * Set the current window's iconified title
1231 void FGAPIENTRY glutSetIconTitle( const char* title )
1233 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetIconTitle" );
1234 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutSetIconTitle" );
1236 if( ! fgStructure.CurrentWindow->Parent )
1238 #if TARGET_HOST_POSIX_X11
1242 text.value = (unsigned char *) title;
1243 text.encoding = XA_STRING;
1245 text.nitems = strlen( title );
1249 fgStructure.CurrentWindow->Window.Handle,
1253 XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
1255 #elif TARGET_HOST_MS_WINDOWS
1258 wchar_t* wstr = fghWstrFromStr(title);
1259 SetWindowText( fgStructure.CurrentWindow->Window.Handle, wstr );
1263 SetWindowText( fgStructure.CurrentWindow->Window.Handle, title );
1271 * Change the current window's size
1273 void FGAPIENTRY glutReshapeWindow( int width, int height )
1275 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutReshapeWindow" );
1276 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutReshapeWindow" );
1278 if (glutGet(GLUT_FULL_SCREEN))
1280 /* Leave full screen state before resizing. */
1281 glutFullScreenToggle();
1284 fgStructure.CurrentWindow->State.NeedToResize = GL_TRUE;
1285 fgStructure.CurrentWindow->State.Width = width ;
1286 fgStructure.CurrentWindow->State.Height = height;
1290 * Change the current window's position
1292 void FGAPIENTRY glutPositionWindow( int x, int y )
1294 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutPositionWindow" );
1295 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutPositionWindow" );
1297 if (glutGet(GLUT_FULL_SCREEN))
1299 /* Leave full screen state before moving. */
1300 glutFullScreenToggle();
1303 #if TARGET_HOST_POSIX_X11
1305 XMoveWindow( fgDisplay.Display, fgStructure.CurrentWindow->Window.Handle,
1307 XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
1309 #elif TARGET_HOST_MS_WINDOWS
1314 /* "GetWindowRect" returns the pixel coordinates of the outside of the window */
1315 GetWindowRect( fgStructure.CurrentWindow->Window.Handle, &winRect );
1317 fgStructure.CurrentWindow->Window.Handle,
1320 winRect.right - winRect.left,
1321 winRect.bottom - winRect.top,
1330 * Lowers the current window (by Z order change)
1332 void FGAPIENTRY glutPushWindow( void )
1334 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutPushWindow" );
1335 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutPushWindow" );
1337 #if TARGET_HOST_POSIX_X11
1339 XLowerWindow( fgDisplay.Display, fgStructure.CurrentWindow->Window.Handle );
1341 #elif TARGET_HOST_MS_WINDOWS
1344 fgStructure.CurrentWindow->Window.Handle,
1347 SWP_NOSIZE | SWP_NOMOVE
1354 * Raises the current window (by Z order change)
1356 void FGAPIENTRY glutPopWindow( void )
1358 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutPopWindow" );
1359 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutPopWindow" );
1361 #if TARGET_HOST_POSIX_X11
1363 XRaiseWindow( fgDisplay.Display, fgStructure.CurrentWindow->Window.Handle );
1365 #elif TARGET_HOST_MS_WINDOWS
1368 fgStructure.CurrentWindow->Window.Handle,
1371 SWP_NOSIZE | SWP_NOMOVE
1378 * Resize the current window so that it fits the whole screen
1380 void FGAPIENTRY glutFullScreen( void )
1382 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutFullScreen" );
1383 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutFullScreen" );
1385 if (glutGet(GLUT_FULL_SCREEN))
1387 /* Leave full screen state before resizing. */
1388 glutFullScreenToggle();
1392 #if TARGET_HOST_POSIX_X11
1394 Status status; /* Returned by XGetWindowAttributes(), not checked. */
1395 XWindowAttributes attributes;
1397 status = XGetWindowAttributes(fgDisplay.Display,
1398 fgStructure.CurrentWindow->Window.Handle,
1401 * The "x" and "y" members of "attributes" are the window's coordinates
1402 * relative to its parent, i.e. to the decoration window.
1404 XMoveResizeWindow(fgDisplay.Display,
1405 fgStructure.CurrentWindow->Window.Handle,
1408 fgDisplay.ScreenWidth,
1409 fgDisplay.ScreenHeight);
1411 #elif TARGET_HOST_MS_WINDOWS && !defined(_WIN32_WCE) /* FIXME: what about WinCE */
1414 /* For fullscreen mode, force the top-left corner to 0,0
1415 * and adjust the window rectangle so that the client area
1416 * covers the whole screen.
1421 rect.right = fgDisplay.ScreenWidth;
1422 rect.bottom = fgDisplay.ScreenHeight;
1424 AdjustWindowRect ( &rect, WS_OVERLAPPEDWINDOW | WS_CLIPSIBLINGS |
1425 WS_CLIPCHILDREN, FALSE );
1428 * SWP_NOACTIVATE Do not activate the window
1429 * SWP_NOOWNERZORDER Do not change position in z-order
1430 * SWP_NOSENDCHANGING Supress WM_WINDOWPOSCHANGING message
1431 * SWP_NOZORDER Retains the current Z order (ignore 2nd param)
1434 SetWindowPos( fgStructure.CurrentWindow->Window.Handle,
1438 rect.right - rect.left,
1439 rect.bottom - rect.top,
1440 SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOSENDCHANGING |
1448 * Toggle the window's full screen state.
1450 void FGAPIENTRY glutFullScreenToggle( void )
1452 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutFullScreenToggle" );
1453 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutFullScreenToggle" );
1456 #if TARGET_HOST_POSIX_X11
1458 if (fgDisplay.StateFullScreen != None)
1464 xevent.type = ClientMessage;
1465 xevent.xclient.type = ClientMessage;
1466 xevent.xclient.serial = 0;
1467 xevent.xclient.send_event = True;
1468 xevent.xclient.display = fgDisplay.Display;
1469 xevent.xclient.window = fgStructure.CurrentWindow->Window.Handle;
1470 xevent.xclient.message_type = fgDisplay.State;
1471 xevent.xclient.format = 32;
1472 xevent.xclient.data.l[0] = 2; /* _NET_WM_STATE_TOGGLE */
1473 xevent.xclient.data.l[1] = fgDisplay.StateFullScreen;
1474 xevent.xclient.data.l[2] = 0;
1475 xevent.xclient.data.l[3] = 0;
1476 xevent.xclient.data.l[4] = 0;
1478 /*** Don't really understand how event masks work... ***/
1479 event_mask = SubstructureRedirectMask | SubstructureNotifyMask;
1481 status = XSendEvent(fgDisplay.Display,
1482 fgDisplay.RootWindow,
1486 FREEGLUT_INTERNAL_ERROR_EXIT(status != 0,
1487 "XSendEvent failed",
1488 "glutFullScreenToggle");
1494 * If the window manager is not Net WM compliant, fall back to legacy
1503 * A.Donev: Set and retrieve the window's user data
1505 void* FGAPIENTRY glutGetWindowData( void )
1507 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGetWindowData" );
1508 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutGetWindowData" );
1509 return fgStructure.CurrentWindow->UserData;
1512 void FGAPIENTRY glutSetWindowData(void* data)
1514 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetWindowData" );
1515 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutSetWindowData" );
1516 fgStructure.CurrentWindow->UserData = data;
1519 /*** END OF FILE ***/