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FreeGLUT-Vita/freeglut/freeglut/src/freeglut_window.c

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/*
* freeglut_window.c
*
* Window management methods.
*
* Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
* Written by Pawel W. Olszta, <olszta@sourceforge.net>
* Creation date: Fri Dec 3 1999
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <GL/freeglut.h>
#include "freeglut_internal.h"
#if defined(_WIN32_WCE)
# include <Aygshell.h>
# ifdef FREEGLUT_LIB_PRAGMAS
# pragma comment( lib, "Aygshell.lib" )
# endif
static wchar_t* fghWstrFromStr(const char* str)
{
int i,len=strlen(str);
wchar_t* wstr = (wchar_t*)malloc(2*len+2);
for(i=0; i<len; i++)
wstr[i] = str[i];
wstr[len] = 0;
return wstr;
}
#endif /* defined(_WIN32_WCE) */
/*
* TODO BEFORE THE STABLE RELEASE:
*
* fgChooseVisual() -- OK, but what about glutInitDisplayString()?
* fgSetupPixelFormat -- ignores the display mode settings
* fgOpenWindow() -- check the Win32 version, -iconic handling!
* fgCloseWindow() -- check the Win32 version
* glutCreateWindow() -- Check when default position and size is {-1,-1}
* glutCreateSubWindow() -- Check when default position and size is {-1,-1}
* glutDestroyWindow() -- check the Win32 version
* glutSetWindow() -- check the Win32 version
* glutGetWindow() -- OK
* glutSetWindowTitle() -- check the Win32 version
* glutSetIconTitle() -- check the Win32 version
* glutShowWindow() -- check the Win32 version
* glutHideWindow() -- check the Win32 version
* glutIconifyWindow() -- check the Win32 version
* glutReshapeWindow() -- check the Win32 version
* glutPositionWindow() -- check the Win32 version
* glutPushWindow() -- check the Win32 version
* glutPopWindow() -- check the Win32 version
*/
/* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
/*
* Chooses a visual basing on the current display mode settings
*/
#if TARGET_HOST_POSIX_X11
XVisualInfo* fgChooseVisual( void )
{
#define BUFFER_SIZES 6
int bufferSize[BUFFER_SIZES] = { 16, 12, 8, 4, 2, 1 };
GLboolean wantIndexedMode = GL_FALSE;
int attributes[ 32 ];
int where = 0;
/* First we have to process the display mode settings... */
/*
* XXX Why is there a semi-colon in this #define? The code
* XXX that uses the macro seems to always add more semicolons...
*/
#define ATTRIB(a) attributes[where++]=a;
#define ATTRIB_VAL(a,v) {ATTRIB(a); ATTRIB(v);}
if( fgState.DisplayMode & GLUT_INDEX )
{
ATTRIB_VAL( GLX_BUFFER_SIZE, 8 );
wantIndexedMode = GL_TRUE;
}
else
{
ATTRIB( GLX_RGBA );
ATTRIB_VAL( GLX_RED_SIZE, 1 );
ATTRIB_VAL( GLX_GREEN_SIZE, 1 );
ATTRIB_VAL( GLX_BLUE_SIZE, 1 );
if( fgState.DisplayMode & GLUT_ALPHA )
ATTRIB_VAL( GLX_ALPHA_SIZE, 1 );
}
if( fgState.DisplayMode & GLUT_DOUBLE )
ATTRIB( GLX_DOUBLEBUFFER );
if( fgState.DisplayMode & GLUT_STEREO )
ATTRIB( GLX_STEREO );
if( fgState.DisplayMode & GLUT_DEPTH )
ATTRIB_VAL( GLX_DEPTH_SIZE, 1 );
if( fgState.DisplayMode & GLUT_STENCIL )
ATTRIB_VAL( GLX_STENCIL_SIZE, 1 );
if( fgState.DisplayMode & GLUT_ACCUM )
{
ATTRIB_VAL( GLX_ACCUM_RED_SIZE, 1 );
ATTRIB_VAL( GLX_ACCUM_GREEN_SIZE, 1 );
ATTRIB_VAL( GLX_ACCUM_BLUE_SIZE, 1 );
if( fgState.DisplayMode & GLUT_ALPHA )
ATTRIB_VAL( GLX_ACCUM_ALPHA_SIZE, 1 );
}
if( fgState.DisplayMode & GLUT_AUX1 )
ATTRIB_VAL( GLX_AUX_BUFFERS, 1 );
if( fgState.DisplayMode & GLUT_AUX2 )
ATTRIB_VAL( GLX_AUX_BUFFERS, 2 );
if( fgState.DisplayMode & GLUT_AUX3 )
ATTRIB_VAL( GLX_AUX_BUFFERS, 3 );
if( fgState.DisplayMode & GLUT_AUX4 )
ATTRIB_VAL( GLX_AUX_BUFFERS, 4 );
if ( fgState.DisplayMode & GLUT_MULTISAMPLE )
ATTRIB_VAL( GLX_SAMPLES_SGIS, 4 );
/* Push a null at the end of the list */
ATTRIB( None );
if( ! wantIndexedMode )
return glXChooseVisual( fgDisplay.Display, fgDisplay.Screen,
attributes );
else
{
XVisualInfo* visualInfo;
int i;
/*
* In indexed mode, we need to check how many bits of depth can we
* achieve. We do this by trying each possibility from the list
* given in the {bufferSize} array. If we match, we return to caller.
*/
for( i=0; i<BUFFER_SIZES; i++ )
{
attributes[ 1 ] = bufferSize[ i ];
visualInfo = glXChooseVisual( fgDisplay.Display, fgDisplay.Screen,
attributes );
if( visualInfo != NULL )
return visualInfo;
}
return NULL;
}
}
#endif
/*
* Setup the pixel format for a Win32 window
*/
#if TARGET_HOST_MS_WINDOWS
/* The following include file is available from SGI but is not standard:
* #include <GL/wglext.h>
* So we copy the necessary parts out of it.
* XXX: should local definitions for extensions be put in a separate include file?
*/
typedef const char * (WINAPI * PFNWGLGETEXTENSIONSSTRINGARBPROC) (HDC hdc);
typedef BOOL (WINAPI * PFNWGLCHOOSEPIXELFORMATARBPROC) (HDC hdc, const int *piAttribIList, const FLOAT *pfAttribFList, UINT nMaxFormats, int *piFormats, UINT *nNumFormats);
#define WGL_DRAW_TO_WINDOW_ARB 0x2001
#define WGL_ACCELERATION_ARB 0x2003
#define WGL_SUPPORT_OPENGL_ARB 0x2010
#define WGL_DOUBLE_BUFFER_ARB 0x2011
#define WGL_COLOR_BITS_ARB 0x2014
#define WGL_ALPHA_BITS_ARB 0x201B
#define WGL_DEPTH_BITS_ARB 0x2022
#define WGL_STENCIL_BITS_ARB 0x2023
#define WGL_FULL_ACCELERATION_ARB 0x2027
#define WGL_SAMPLE_BUFFERS_ARB 0x2041
#define WGL_SAMPLES_ARB 0x2042
GLboolean fgSetupPixelFormat( SFG_Window* window, GLboolean checkOnly,
unsigned char layer_type )
{
#if defined(_WIN32_WCE)
return GL_TRUE;
#else
PIXELFORMATDESCRIPTOR* ppfd, pfd;
int flags, pixelformat;
freeglut_return_val_if_fail( window != NULL, 0 );
flags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
if( fgState.DisplayMode & GLUT_DOUBLE )
flags |= PFD_DOUBLEBUFFER;
if( fgState.DisplayMode & GLUT_STEREO )
flags |= PFD_STEREO;
#if defined(_MSC_VER)
#pragma message( "fgSetupPixelFormat(): there is still some work to do here!" )
#endif
/* Specify which pixel format do we opt for... */
pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
pfd.nVersion = 1;
pfd.dwFlags = flags;
if( fgState.DisplayMode & GLUT_INDEX )
{
pfd.iPixelType = PFD_TYPE_COLORINDEX;
pfd.cRedBits = 0;
pfd.cGreenBits = 0;
pfd.cBlueBits = 0;
pfd.cAlphaBits = 0;
}
else
{
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cRedBits = 8;
pfd.cGreenBits = 8;
pfd.cBlueBits = 8;
if ( fgState.DisplayMode & GLUT_ALPHA )
pfd.cAlphaBits = 8;
else
pfd.cAlphaBits = 0;
}
pfd.cColorBits = 24;
pfd.cRedShift = 0;
pfd.cGreenShift = 0;
pfd.cBlueShift = 0;
pfd.cAlphaShift = 0;
pfd.cAccumBits = 0;
pfd.cAccumRedBits = 0;
pfd.cAccumGreenBits = 0;
pfd.cAccumBlueBits = 0;
pfd.cAccumAlphaBits = 0;
#if 0
pfd.cDepthBits = 32;
pfd.cStencilBits = 0;
#else
pfd.cDepthBits = 24;
pfd.cStencilBits = 8;
#endif
if( fgState.DisplayMode & GLUT_AUX4 )
pfd.cAuxBuffers = 4;
else if( fgState.DisplayMode & GLUT_AUX3 )
pfd.cAuxBuffers = 3;
else if( fgState.DisplayMode & GLUT_AUX2 )
pfd.cAuxBuffers = 2;
else if( fgState.DisplayMode & GLUT_AUX1 )
pfd.cAuxBuffers = 1;
else
pfd.cAuxBuffers = 0;
pfd.iLayerType = layer_type;
pfd.bReserved = 0;
pfd.dwLayerMask = 0;
pfd.dwVisibleMask = 0;
pfd.dwDamageMask = 0;
pfd.cColorBits = (BYTE) GetDeviceCaps( window->Window.Device, BITSPIXEL );
ppfd = &pfd;
pixelformat = ChoosePixelFormat( window->Window.Device, ppfd );
/* windows hack for multismapling */
if (fgState.DisplayMode&GLUT_MULTISAMPLE)
{
PFNWGLGETEXTENSIONSSTRINGARBPROC wglGetEntensionsStringARB=NULL;
HGLRC rc, rc_before=wglGetCurrentContext();
HWND hWnd;
HDC hDC, hDC_before=wglGetCurrentDC();
WNDCLASS wndCls;
ATOM atom;
/* create a dummy window */
ZeroMemory(&wndCls, sizeof(wndCls));
wndCls.lpfnWndProc = DefWindowProc;
wndCls.hInstance = fgDisplay.Instance;
wndCls.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
wndCls.lpszClassName = _T("FREEGLUT_dummy");
atom = RegisterClass( &wndCls );
hWnd=CreateWindow((LPCSTR)atom, _T(""), WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_OVERLAPPEDWINDOW , 0,0,0,0, 0, 0, fgDisplay.Instance, 0 );
hDC=GetDC(hWnd);
SetPixelFormat( hDC, pixelformat, ppfd );
rc = wglCreateContext( hDC );
wglMakeCurrent(hDC, rc);
wglGetEntensionsStringARB=(PFNWGLGETEXTENSIONSSTRINGARBPROC)wglGetProcAddress("wglGetExtensionsStringARB");
if (wglGetEntensionsStringARB)
{
const char * pWglExtString=wglGetEntensionsStringARB(hDC);
if (pWglExtString)
{
if (strstr(pWglExtString, "WGL_ARB_multisample"))
{
int pAttributes[100];
int iCounter=0;
int iPixelFormat;
BOOL bValid;
float fAttributes[] = {0,0};
UINT numFormats;
PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormatARBProc=NULL;
wglChoosePixelFormatARBProc=(PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress("wglChoosePixelFormatARB");
if ( wglChoosePixelFormatARBProc )
{
pAttributes[iCounter++]=WGL_DRAW_TO_WINDOW_ARB; pAttributes[iCounter++]=GL_TRUE;
pAttributes[iCounter++]=WGL_SUPPORT_OPENGL_ARB; pAttributes[iCounter++]=GL_TRUE;
pAttributes[iCounter++]=WGL_ACCELERATION_ARB; pAttributes[iCounter++]=WGL_FULL_ACCELERATION_ARB;
pAttributes[iCounter++]=WGL_COLOR_BITS_ARB; pAttributes[iCounter++]=pfd.cColorBits ;
pAttributes[iCounter++]=WGL_ALPHA_BITS_ARB; pAttributes[iCounter++]=pfd.cAlphaBits;
pAttributes[iCounter++]=WGL_DEPTH_BITS_ARB; pAttributes[iCounter++]=pfd.cDepthBits;
pAttributes[iCounter++]=WGL_STENCIL_BITS_ARB; pAttributes[iCounter++]=pfd.cStencilBits;
pAttributes[iCounter++]=WGL_DOUBLE_BUFFER_ARB; pAttributes[iCounter++]=(fgState.DisplayMode & GLUT_DOUBLE)!=0;
pAttributes[iCounter++]=WGL_SAMPLE_BUFFERS_ARB; pAttributes[iCounter++]=GL_TRUE;
pAttributes[iCounter++]=WGL_SAMPLES_ARB; pAttributes[iCounter++]=4;
pAttributes[iCounter++]=0; pAttributes[iCounter++]=0; /* terminator */
bValid = wglChoosePixelFormatARBProc(window->Window.Device,pAttributes,fAttributes,1,&iPixelFormat,&numFormats);
if (bValid && numFormats>0)
pixelformat=iPixelFormat;
}
}
wglMakeCurrent( hDC_before, rc_before);
wglDeleteContext(rc);
ReleaseDC(hWnd, hDC);
DestroyWindow(hWnd);
UnregisterClass(_T("FREEGLUT_dummy"), fgDisplay.Instance);
}
}
}
if( pixelformat == 0 )
return GL_FALSE;
if( checkOnly )
return GL_TRUE;
return SetPixelFormat( window->Window.Device, pixelformat, ppfd );
#endif /* defined(_WIN32_WCE) */
}
#endif /* TARGET_HOST_MS_WINDOWS */
/*
* Sets the OpenGL context and the fgStructure "Current Window" pointer to
* the window structure passed in.
*/
void fgSetWindow ( SFG_Window *window )
{
#if TARGET_HOST_POSIX_X11
if ( window )
glXMakeCurrent(
fgDisplay.Display,
window->Window.Handle,
window->Window.Context
);
#elif TARGET_HOST_MS_WINDOWS
if( fgStructure.CurrentWindow )
ReleaseDC( fgStructure.CurrentWindow->Window.Handle,
fgStructure.CurrentWindow->Window.Device );
if ( window )
{
window->Window.Device = GetDC( window->Window.Handle );
wglMakeCurrent(
window->Window.Device,
window->Window.Context
);
}
#endif
fgStructure.CurrentWindow = window;
}
/*
* Opens a window. Requires a SFG_Window object created and attached
* to the freeglut structure. OpenGL context is created here.
*/
void fgOpenWindow( SFG_Window* window, const char* title,
GLboolean positionUse, int x, int y,
GLboolean sizeUse, int w, int h,
GLboolean gameMode, GLboolean isSubWindow )
{
#if TARGET_HOST_POSIX_X11
XSetWindowAttributes winAttr;
XTextProperty textProperty;
XSizeHints sizeHints;
XWMHints wmHints;
unsigned long mask;
unsigned int current_DisplayMode = fgState.DisplayMode ;
/* Save the display mode if we are creating a menu window */
if( window->IsMenu && ( ! fgStructure.MenuContext ) )
fgState.DisplayMode = GLUT_DOUBLE | GLUT_RGB ;
window->Window.VisualInfo = fgChooseVisual( );
if( window->IsMenu && ( ! fgStructure.MenuContext ) )
fgState.DisplayMode = current_DisplayMode ;
if( ! window->Window.VisualInfo )
{
/*
* The "fgChooseVisual" returned a null meaning that the visual
* context is not available.
* Try a couple of variations to see if they will work.
*/
if( !( fgState.DisplayMode & GLUT_DOUBLE ) )
{
fgState.DisplayMode |= GLUT_DOUBLE ;
window->Window.VisualInfo = fgChooseVisual( );
fgState.DisplayMode &= ~GLUT_DOUBLE;
}
if( fgState.DisplayMode & GLUT_MULTISAMPLE )
{
fgState.DisplayMode &= ~GLUT_MULTISAMPLE ;
window->Window.VisualInfo = fgChooseVisual( );
fgState.DisplayMode |= GLUT_MULTISAMPLE;
}
}
FREEGLUT_INTERNAL_ERROR_EXIT( window->Window.VisualInfo != NULL,
"Visual with necessary capabilities not found", "fgOpenWindow" );
/*
* XXX HINT: the masks should be updated when adding/removing callbacks.
* XXX This might speed up message processing. Is that true?
* XXX
* XXX A: Not appreciably, but it WILL make it easier to debug.
* XXX Try tracing old GLUT and try tracing freeglut. Old GLUT
* XXX turns off events that it doesn't need and is a whole lot
* XXX more pleasant to trace. (Think mouse-motion! Tons of
* XXX ``bonus'' GUI events stream in.)
*/
winAttr.event_mask =
StructureNotifyMask | SubstructureNotifyMask | ExposureMask |
ButtonPressMask | ButtonReleaseMask | KeyPressMask | KeyReleaseMask |
VisibilityChangeMask | EnterWindowMask | LeaveWindowMask |
PointerMotionMask | ButtonMotionMask;
winAttr.background_pixmap = None;
winAttr.background_pixel = 0;
winAttr.border_pixel = 0;
winAttr.colormap = XCreateColormap(
fgDisplay.Display, fgDisplay.RootWindow,
window->Window.VisualInfo->visual, AllocNone
);
mask = CWBackPixmap | CWBorderPixel | CWColormap | CWEventMask;
if( window->IsMenu || ( gameMode == GL_TRUE ) )
{
winAttr.override_redirect = True;
mask |= CWOverrideRedirect;
}
if( ! positionUse )
x = y = -1; /* default window position */
if( ! sizeUse )
w = h = 300; /* default window size */
window->Window.Handle = XCreateWindow(
fgDisplay.Display,
window->Parent == NULL ? fgDisplay.RootWindow :
window->Parent->Window.Handle,
x, y, w, h, 0,
window->Window.VisualInfo->depth, InputOutput,
window->Window.VisualInfo->visual, mask,
&winAttr
);
/*
* The GLX context creation, possibly trying the direct context rendering
* or else use the current context if the user has so specified
*/
if( window->IsMenu )
{
/*
* If there isn't already an OpenGL rendering context for menu
* windows, make one
*/
if( !fgStructure.MenuContext )
{
fgStructure.MenuContext =
(SFG_MenuContext *)malloc( sizeof(SFG_MenuContext) );
fgStructure.MenuContext->MVisualInfo = window->Window.VisualInfo;
fgStructure.MenuContext->MContext = glXCreateContext(
fgDisplay.Display, fgStructure.MenuContext->MVisualInfo,
NULL, ( fgState.DirectContext != GLUT_FORCE_INDIRECT_CONTEXT )
);
}
/* window->Window.Context = fgStructure.MenuContext->MContext; */
window->Window.Context = glXCreateContext(
fgDisplay.Display, window->Window.VisualInfo,
NULL, ( fgState.DirectContext != GLUT_FORCE_INDIRECT_CONTEXT )
);
}
else if( fgState.UseCurrentContext )
{
window->Window.Context = glXGetCurrentContext( );
if( ! window->Window.Context )
window->Window.Context = glXCreateContext(
fgDisplay.Display, window->Window.VisualInfo,
NULL, ( fgState.DirectContext != GLUT_FORCE_INDIRECT_CONTEXT )
);
}
else
window->Window.Context = glXCreateContext(
fgDisplay.Display, window->Window.VisualInfo,
NULL, ( fgState.DirectContext != GLUT_FORCE_INDIRECT_CONTEXT )
);
#if !defined( __FreeBSD__ ) && !defined( __NetBSD__ )
if( !glXIsDirect( fgDisplay.Display, window->Window.Context ) )
{
if( fgState.DirectContext == GLUT_FORCE_DIRECT_CONTEXT )
fgError( "Unable to force direct context rendering for window '%s'",
title );
else if( fgState.DirectContext == GLUT_TRY_DIRECT_CONTEXT )
fgWarning( "Unable to create direct context rendering for window '%s'\nThis may hurt performance.",
title );
}
#endif
/*
* XXX Assume the new window is visible by default
* XXX Is this a safe assumption?
*/
window->State.Visible = GL_TRUE;
sizeHints.flags = 0;
if ( positionUse )
sizeHints.flags |= USPosition;
if ( sizeUse )
sizeHints.flags |= USSize;
/*
* Fill in the size hints values now (the x, y, width and height
* settings are obsolete, are there any more WMs that support them?)
* Unless the X servers actually stop supporting these, we should
* continue to fill them in. It is *not* our place to tell the user
* that they should replace a window manager that they like, and which
* works, just because *we* think that it's not "modern" enough.
*/
sizeHints.x = x;
sizeHints.y = y;
sizeHints.width = w;
sizeHints.height = h;
wmHints.flags = StateHint;
wmHints.initial_state = fgState.ForceIconic ? IconicState : NormalState;
/* Prepare the window and iconified window names... */
XStringListToTextProperty( (char **) &title, 1, &textProperty );
XSetWMProperties(
fgDisplay.Display,
window->Window.Handle,
&textProperty,
&textProperty,
0,
0,
&sizeHints,
&wmHints,
NULL
);
XFree( textProperty.value );
XSetWMProtocols( fgDisplay.Display, window->Window.Handle,
&fgDisplay.DeleteWindow, 1 );
glXMakeCurrent(
fgDisplay.Display,
window->Window.Handle,
window->Window.Context
);
XMapWindow( fgDisplay.Display, window->Window.Handle );
#elif TARGET_HOST_MS_WINDOWS
WNDCLASS wc;
DWORD flags;
DWORD exFlags = 0;
ATOM atom;
int WindowStyle = 0;
/* Grab the window class we have registered on glutInit(): */
atom = GetClassInfo( fgDisplay.Instance, _T("FREEGLUT"), &wc );
FREEGLUT_INTERNAL_ERROR_EXIT ( atom, "Window Class Info Not Found",
"fgOpenWindow" );
if( gameMode )
{
FREEGLUT_INTERNAL_ERROR_EXIT ( window->Parent == NULL,
"Game mode being invoked on a subwindow",
"fgOpenWindow" );
/*
* Set the window creation flags appropriately to make the window
* entirely visible:
*/
flags = WS_POPUP | WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_VISIBLE;
}
else
{
int worig = w, horig = h;
#if !defined(_WIN32_WCE)
if ( ( ! isSubWindow ) && ( ! window->IsMenu ) )
{
/*
* Update the window dimensions, taking account of window
* decorations. "freeglut" is to create the window with the
* outside of its border at (x,y) and with dimensions (w,h).
*/
w += (GetSystemMetrics( SM_CXSIZEFRAME ) )*2;
h += (GetSystemMetrics( SM_CYSIZEFRAME ) )*2 +
GetSystemMetrics( SM_CYCAPTION );
}
#endif /* defined(_WIN32_WCE) */
if( ! positionUse )
{
x = CW_USEDEFAULT;
y = CW_USEDEFAULT;
}
/* setting State.Width/Height to call resize callback later */
if( ! sizeUse )
{
if( ! window->IsMenu )
{
w = CW_USEDEFAULT;
h = CW_USEDEFAULT;
}
else /* fail safe - Windows can make a window of size (0, 0) */
w = h = 300; /* default window size */
window->State.Width = window->State.Height = -1;
}
else
{
window->State.Width = worig;
window->State.Height = horig;
}
/*
* There's a small difference between creating the top, child and
* game mode windows
*/
flags = WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_VISIBLE;
if ( window->IsMenu )
{
flags |= WS_POPUP;
exFlags |= WS_EX_TOOLWINDOW;
}
#if !defined(_WIN32_WCE)
else if( window->Parent == NULL )
flags |= WS_OVERLAPPEDWINDOW;
#endif
else
flags |= WS_CHILD;
}
#if defined(_WIN32_WCE)
{
wchar_t* wstr = fghWstrFromStr(title);
window->Window.Handle = CreateWindow(
_T("FREEGLUT"),
wstr,
WS_VISIBLE | WS_POPUP,
0,0, 240,320,
NULL,
NULL,
fgDisplay.Instance,
(LPVOID) window
);
free(wstr);
SHFullScreen(window->Window.Handle, SHFS_HIDESTARTICON);
SHFullScreen(window->Window.Handle, SHFS_HIDESIPBUTTON);
SHFullScreen(window->Window.Handle, SHFS_HIDETASKBAR);
MoveWindow(window->Window.Handle, 0, 0, 240, 320, TRUE);
ShowWindow(window->Window.Handle, SW_SHOW);
UpdateWindow(window->Window.Handle);
}
#else
window->Window.Handle = CreateWindowEx(
exFlags,
_T("FREEGLUT"),
title,
flags,
x, y, w, h,
(HWND) window->Parent == NULL ? NULL : window->Parent->Window.Handle,
(HMENU) NULL,
fgDisplay.Instance,
(LPVOID) window
);
#endif /* defined(_WIN32_WCE) */
if( !( window->Window.Handle ) )
fgError( "Failed to create a window (%s)!", title );
/* Make a menu window always on top - fix Feature Request 947118 */
if( window->IsMenu || gameMode )
SetWindowPos(
window->Window.Handle,
HWND_TOPMOST,
0, 0, 0, 0,
SWP_NOMOVE | SWP_NOSIZE
);
/* Hack to remove the caption (title bar) and/or border
* and all the system menu controls.
*/
WindowStyle = GetWindowLong(window->Window.Handle, GWL_STYLE);
if ( fgState.DisplayMode & GLUT_CAPTIONLESS )
{
SetWindowLong ( window->Window.Handle, GWL_STYLE,
WindowStyle & ~(WS_DLGFRAME | WS_SYSMENU | WS_MINIMIZEBOX | WS_MAXIMIZEBOX));
}
else if ( fgState.DisplayMode & GLUT_BORDERLESS )
{
SetWindowLong ( window->Window.Handle, GWL_STYLE,
WindowStyle & ~(WS_BORDER | WS_SYSMENU | WS_MINIMIZEBOX | WS_MAXIMIZEBOX));
}
//SetWindowPos(window->Window.Handle, NULL, 0, 0, 0, 0,
// SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED);
#if defined(_WIN32_WCE)
ShowWindow( window->Window.Handle, SW_SHOW );
#else
ShowWindow( window->Window.Handle,
fgState.ForceIconic ? SW_SHOWMINIMIZED : SW_SHOW );
#endif /* defined(_WIN32_WCE) */
UpdateWindow( window->Window.Handle );
ShowCursor( TRUE ); /* XXX Old comments say "hide cursor"! */
#endif
fgSetWindow( window );
window->Window.DoubleBuffered =
( fgState.DisplayMode & GLUT_DOUBLE ) ? 1 : 0;
if ( ! window->Window.DoubleBuffered )
{
glDrawBuffer ( GL_FRONT );
glReadBuffer ( GL_FRONT );
}
}
/*
* Closes a window, destroying the frame and OpenGL context
*/
void fgCloseWindow( SFG_Window* window )
{
#if TARGET_HOST_POSIX_X11
glXDestroyContext( fgDisplay.Display, window->Window.Context );
XFree( window->Window.VisualInfo );
XDestroyWindow( fgDisplay.Display, window->Window.Handle );
XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
#elif TARGET_HOST_MS_WINDOWS
/* Make sure we don't close a window with current context active */
if( fgStructure.CurrentWindow == window )
wglMakeCurrent( NULL, NULL );
/*
* Step through the list of windows. If the rendering context
* is not being used by another window, then we delete it.
*/
{
int used = FALSE ;
SFG_Window *iter ;
for( iter = (SFG_Window *)fgStructure.Windows.First;
iter;
iter = (SFG_Window *)iter->Node.Next )
{
if( ( iter->Window.Context == window->Window.Context ) &&
( iter != window ) )
used = TRUE;
}
if( ! used )
wglDeleteContext( window->Window.Context );
}
DestroyWindow( window->Window.Handle );
#endif
}
/* -- INTERFACE FUNCTIONS -------------------------------------------------- */
/*
* Creates a new top-level freeglut window
*/
int FGAPIENTRY glutCreateWindow( const char* title )
{
/* XXX GLUT does not exit; it simply calls "glutInit" quietly if the
* XXX application has not already done so. The "freeglut" community
* XXX decided not to go this route (freeglut-developer e-mail from
* XXX Steve Baker, 12/16/04, 4:22 PM CST, "Re: [Freeglut-developer]
* XXX Desired 'freeglut' behaviour when there is no current window"
*/
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutCreateWindow" );
return fgCreateWindow( NULL, title, fgState.Position.Use,
fgState.Position.X, fgState.Position.Y,
fgState.Size.Use, fgState.Size.X, fgState.Size.Y,
GL_FALSE, GL_FALSE )->ID;
}
/*
* This function creates a sub window.
*/
int FGAPIENTRY glutCreateSubWindow( int parentID, int x, int y, int w, int h )
{
int ret = 0;
SFG_Window* window = NULL;
SFG_Window* parent = NULL;
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutCreateSubWindow" );
parent = fgWindowByID( parentID );
freeglut_return_val_if_fail( parent != NULL, 0 );
if ( x < 0 )
{
x = parent->State.Width + x ;
if ( w >= 0 ) x -= w ;
}
if ( w < 0 ) w = parent->State.Width - x + w ;
if ( w < 0 )
{
x += w ;
w = -w ;
}
if ( y < 0 )
{
y = parent->State.Height + y ;
if ( h >= 0 ) y -= h ;
}
if ( h < 0 ) h = parent->State.Height - y + h ;
if ( h < 0 )
{
y += h ;
h = -h ;
}
window = fgCreateWindow( parent, "", GL_TRUE, x, y, GL_TRUE, w, h, GL_FALSE, GL_FALSE );
ret = window->ID;
return ret;
}
/*
* Destroys a window and all of its subwindows
*/
void FGAPIENTRY glutDestroyWindow( int windowID )
{
SFG_Window* window;
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutDestroyWindow" );
window = fgWindowByID( windowID );
freeglut_return_if_fail( window != NULL );
{
fgExecutionState ExecState = fgState.ExecState;
fgAddToWindowDestroyList( window );
fgState.ExecState = ExecState;
}
}
/*
* This function selects the current window
*/
void FGAPIENTRY glutSetWindow( int ID )
{
SFG_Window* window = NULL;
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetWindow" );
if( fgStructure.CurrentWindow != NULL )
if( fgStructure.CurrentWindow->ID == ID )
return;
window = fgWindowByID( ID );
if( window == NULL )
{
fgWarning( "glutSetWindow(): window ID %d not found!", ID );
return;
}
fgSetWindow( window );
}
/*
* This function returns the ID number of the current window, 0 if none exists
*/
int FGAPIENTRY glutGetWindow( void )
{
SFG_Window *win = fgStructure.CurrentWindow;
/*
* Since GLUT did not throw an error if this function was called without a prior call to
* "glutInit", this function shouldn't do so here. Instead let us return a zero.
* See Feature Request "[ 1307049 ] glutInit check".
*/
if ( ! fgState.Initialised )
return 0;
while ( win && win->IsMenu )
win = win->Parent;
return win ? win->ID : 0;
}
/*
* This function makes the current window visible
*/
void FGAPIENTRY glutShowWindow( void )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutShowWindow" );
FREEGLUT_EXIT_IF_NO_WINDOW ( "glutShowWindow" );
#if TARGET_HOST_POSIX_X11
XMapWindow( fgDisplay.Display, fgStructure.CurrentWindow->Window.Handle );
XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
#elif TARGET_HOST_MS_WINDOWS
ShowWindow( fgStructure.CurrentWindow->Window.Handle, SW_SHOW );
#endif
fgStructure.CurrentWindow->State.Redisplay = GL_TRUE;
}
/*
* This function hides the current window
*/
void FGAPIENTRY glutHideWindow( void )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutHideWindow" );
FREEGLUT_EXIT_IF_NO_WINDOW ( "glutHideWindow" );
#if TARGET_HOST_POSIX_X11
if( fgStructure.CurrentWindow->Parent == NULL )
XWithdrawWindow( fgDisplay.Display,
fgStructure.CurrentWindow->Window.Handle,
fgDisplay.Screen );
else
XUnmapWindow( fgDisplay.Display,
fgStructure.CurrentWindow->Window.Handle );
XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
#elif TARGET_HOST_MS_WINDOWS
ShowWindow( fgStructure.CurrentWindow->Window.Handle, SW_HIDE );
#endif
fgStructure.CurrentWindow->State.Redisplay = GL_FALSE;
}
/*
* Iconify the current window (top-level windows only)
*/
void FGAPIENTRY glutIconifyWindow( void )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutIconifyWindow" );
FREEGLUT_EXIT_IF_NO_WINDOW ( "glutIconifyWindow" );
fgStructure.CurrentWindow->State.Visible = GL_FALSE;
#if TARGET_HOST_POSIX_X11
XIconifyWindow( fgDisplay.Display, fgStructure.CurrentWindow->Window.Handle,
fgDisplay.Screen );
XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
#elif TARGET_HOST_MS_WINDOWS
ShowWindow( fgStructure.CurrentWindow->Window.Handle, SW_MINIMIZE );
#endif
fgStructure.CurrentWindow->State.Redisplay = GL_FALSE;
}
/*
* Set the current window's title
*/
void FGAPIENTRY glutSetWindowTitle( const char* title )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetWindowTitle" );
FREEGLUT_EXIT_IF_NO_WINDOW ( "glutSetWindowTitle" );
if( ! fgStructure.CurrentWindow->Parent )
{
#if TARGET_HOST_POSIX_X11
XTextProperty text;
text.value = (unsigned char *) title;
text.encoding = XA_STRING;
text.format = 8;
text.nitems = strlen( title );
XSetWMName(
fgDisplay.Display,
fgStructure.CurrentWindow->Window.Handle,
&text
);
XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
#elif TARGET_HOST_MS_WINDOWS
# ifdef _WIN32_WCE
{
wchar_t* wstr = fghWstrFromStr(title);
SetWindowText( fgStructure.CurrentWindow->Window.Handle, wstr );
free(wstr);
}
# else
SetWindowText( fgStructure.CurrentWindow->Window.Handle, title );
# endif
#endif
}
}
/*
* Set the current window's iconified title
*/
void FGAPIENTRY glutSetIconTitle( const char* title )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetIconTitle" );
FREEGLUT_EXIT_IF_NO_WINDOW ( "glutSetIconTitle" );
if( ! fgStructure.CurrentWindow->Parent )
{
#if TARGET_HOST_POSIX_X11
XTextProperty text;
text.value = (unsigned char *) title;
text.encoding = XA_STRING;
text.format = 8;
text.nitems = strlen( title );
XSetWMIconName(
fgDisplay.Display,
fgStructure.CurrentWindow->Window.Handle,
&text
);
XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
#elif TARGET_HOST_MS_WINDOWS
# ifdef _WIN32_WCE
{
wchar_t* wstr = fghWstrFromStr(title);
SetWindowText( fgStructure.CurrentWindow->Window.Handle, wstr );
free(wstr);
}
# else
SetWindowText( fgStructure.CurrentWindow->Window.Handle, title );
# endif
#endif
}
}
/*
* Change the current window's size
*/
void FGAPIENTRY glutReshapeWindow( int width, int height )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutReshapeWindow" );
FREEGLUT_EXIT_IF_NO_WINDOW ( "glutReshapeWindow" );
fgStructure.CurrentWindow->State.NeedToResize = GL_TRUE;
fgStructure.CurrentWindow->State.Width = width ;
fgStructure.CurrentWindow->State.Height = height;
}
/*
* Change the current window's position
*/
void FGAPIENTRY glutPositionWindow( int x, int y )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutPositionWindow" );
FREEGLUT_EXIT_IF_NO_WINDOW ( "glutPositionWindow" );
#if TARGET_HOST_POSIX_X11
XMoveWindow( fgDisplay.Display, fgStructure.CurrentWindow->Window.Handle,
x, y );
XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
#elif TARGET_HOST_MS_WINDOWS
{
RECT winRect;
/* "GetWindowRect" returns the pixel coordinates of the outside of the window */
GetWindowRect( fgStructure.CurrentWindow->Window.Handle, &winRect );
MoveWindow(
fgStructure.CurrentWindow->Window.Handle,
x,
y,
winRect.right - winRect.left,
winRect.bottom - winRect.top,
TRUE
);
}
#endif
}
/*
* Lowers the current window (by Z order change)
*/
void FGAPIENTRY glutPushWindow( void )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutPushWindow" );
FREEGLUT_EXIT_IF_NO_WINDOW ( "glutPushWindow" );
#if TARGET_HOST_POSIX_X11
XLowerWindow( fgDisplay.Display, fgStructure.CurrentWindow->Window.Handle );
#elif TARGET_HOST_MS_WINDOWS
SetWindowPos(
fgStructure.CurrentWindow->Window.Handle,
HWND_BOTTOM,
0, 0, 0, 0,
SWP_NOSIZE | SWP_NOMOVE
);
#endif
}
/*
* Raises the current window (by Z order change)
*/
void FGAPIENTRY glutPopWindow( void )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutPopWindow" );
FREEGLUT_EXIT_IF_NO_WINDOW ( "glutPopWindow" );
#if TARGET_HOST_POSIX_X11
XRaiseWindow( fgDisplay.Display, fgStructure.CurrentWindow->Window.Handle );
#elif TARGET_HOST_MS_WINDOWS
SetWindowPos(
fgStructure.CurrentWindow->Window.Handle,
HWND_TOP,
0, 0, 0, 0,
SWP_NOSIZE | SWP_NOMOVE
);
#endif
}
/*
* Resize the current window so that it fits the whole screen
*/
void FGAPIENTRY glutFullScreen( void )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutFullScreen" );
FREEGLUT_EXIT_IF_NO_WINDOW ( "glutFullScreen" );
{
#if TARGET_HOST_POSIX_X11
int x, y;
Window w;
XMoveResizeWindow(
fgDisplay.Display,
fgStructure.CurrentWindow->Window.Handle,
0, 0,
fgDisplay.ScreenWidth,
fgDisplay.ScreenHeight
);
XFlush( fgDisplay.Display ); /* This is needed */
XTranslateCoordinates(
fgDisplay.Display,
fgStructure.CurrentWindow->Window.Handle,
fgDisplay.RootWindow,
0, 0, &x, &y, &w
);
if (x || y)
{
XMoveWindow(
fgDisplay.Display,
fgStructure.CurrentWindow->Window.Handle,
-x, -y
);
XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
}
#elif TARGET_HOST_MS_WINDOWS && !defined(_WIN32_WCE) /* FIXME: what about WinCE */
RECT rect;
/* For fullscreen mode, force the top-left corner to 0,0
* and adjust the window rectangle so that the client area
* covers the whole screen.
*/
rect.left = 0;
rect.top = 0;
rect.right = fgDisplay.ScreenWidth;
rect.bottom = fgDisplay.ScreenHeight;
AdjustWindowRect ( &rect, WS_OVERLAPPEDWINDOW | WS_CLIPSIBLINGS |
WS_CLIPCHILDREN, FALSE );
/*
* SWP_NOACTIVATE Do not activate the window
* SWP_NOOWNERZORDER Do not change position in z-order
* SWP_NOSENDCHANGING Supress WM_WINDOWPOSCHANGING message
* SWP_NOZORDER Retains the current Z order (ignore 2nd param)
*/
SetWindowPos( fgStructure.CurrentWindow->Window.Handle,
HWND_TOP,
rect.left,
rect.top,
rect.right - rect.left,
rect.bottom - rect.top,
SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOSENDCHANGING |
SWP_NOZORDER
);
#endif
}
}
/*
* A.Donev: Set and retrieve the window's user data
*/
void* FGAPIENTRY glutGetWindowData( void )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGetWindowData" );
FREEGLUT_EXIT_IF_NO_WINDOW ( "glutGetWindowData" );
return fgStructure.CurrentWindow->UserData;
}
void FGAPIENTRY glutSetWindowData(void* data)
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetWindowData" );
FREEGLUT_EXIT_IF_NO_WINDOW ( "glutSetWindowData" );
fgStructure.CurrentWindow->UserData = data;
}
/*** END OF FILE ***/
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