glutwindow.cpp

mesa-6.5-minigui源码

	window->UnlockGL();

	// now, if the window was top-level, delete its BWindow
	if(!window->parent) {
		bwindow->Quit();
	} else {
		// else, detach it from the BWindow and delete it
		window->RemoveSelf();
		delete window;
		bwindow->Unlock();
	}
	// relock GL if the current window is still valid
	if(gState.currentWindow)
		gState.currentWindow->LockGL();
}

/***********************************************************
 *	FUNCTION:	__glutDestroyAllWindows
 *
 *	DESCRIPTION:  destroy all windows when exit() is called
 *                this seems to be necessary to avoid delays
 *                and crashes when using BDirectWindow
 ***********************************************************/
void __glutDestroyAllWindows() {
	for(int i=0; i<gState.windowListSize; i++) {
		if (gState.windowList[i]) {
			glutDestroyWindow(i + 1);
		}
	}
	gState.display->Lock();
	gState.display->Quit();
	status_t ignored;
	wait_for_thread(gState.appthread, &ignored);
}

/***********************************************************
 *	FUNCTION:	glutPostRedisplay (4.5)
 *
 *	DESCRIPTION:  mark window as needing redisplay
 ***********************************************************/
void glutPostRedisplay() {
	gState.currentWindow->Window()->Lock();
	gState.currentWindow->anyevents = true;
	gState.currentWindow->displayEvent = true;
	gState.currentWindow->Window()->Unlock();
	gBlock.QuickNewEvent();
}

/***********************************************************
 *	FUNCTION:	glutPostWindowRedisplay
 *
 *	DESCRIPTION:  mark window as needing redisplay
 ***********************************************************/
void glutPostWindowRedisplay(int win) {
	GlutWindow *gwin = gState.windowList[win - 1];
	gwin->Window()->Lock();
	gwin->anyevents = true;
	gwin->displayEvent = true;
	gwin->Window()->Unlock();
	gBlock.QuickNewEvent();
}

/***********************************************************
 *	FUNCTION:	glutSwapBuffers (4.6)
 *
 *	DESCRIPTION:  swap buffers
 ***********************************************************/
void glutSwapBuffers() {
	gState.currentWindow->SwapBuffers();
}

/***********************************************************
 *	FUNCTION:	glutPositionWindow (4.7)
 *
 *	DESCRIPTION:  move window
 ***********************************************************/
void glutPositionWindow(int x, int y) {
	BDirectWindow *win = dynamic_cast<BDirectWindow*>(gState.currentWindow->Window());
	win->Lock();
	if (gState.currentWindow->parent)
		gState.currentWindow->MoveTo(x, y);	// move the child view
	else {
		if(win->IsFullScreen()) {
			win->SetFullScreen(false);
		}
		win->MoveTo(x, y);  // move the window
	}
	win->Unlock();
}

/***********************************************************
 *	FUNCTION:	glutReshapeWindow (4.8)
 *
 *	DESCRIPTION:  reshape window (we'll catch the callback
 *				when the view gets a Draw() message
 ***********************************************************/
void glutReshapeWindow(int width, int height) {
	BDirectWindow *win = dynamic_cast<BDirectWindow*>(gState.currentWindow->Window());
	win->Lock();
	if (gState.currentWindow->parent)
		gState.currentWindow->ResizeTo(width-1, height-1);		// resize the child
	else {
		if(win->IsFullScreen()) {
			win->SetFullScreen(false);
		}
		win->ResizeTo(width-1, height-1);  // resize the parent
	}
	win->Unlock();
}

/***********************************************************
 *	FUNCTION:	glutFullScreen (4.9)
 *
 *	DESCRIPTION:  makes the window full screen
 ***********************************************************/
void glutFullScreen() {
	BDirectWindow *win = dynamic_cast<BDirectWindow*>(gState.currentWindow->Window());
	win->Lock();
	win->SetFullScreen(true);
	win->Unlock();
}

/***********************************************************
 *	FUNCTION:	glutPopWindow (4.10)
 *				glutPushWindow
 *
 *	DESCRIPTION:  change the stacking order of the current window
 *		NOTE:	I can't figure out how to do this for windows,
 *				and there is no concept of "stacking order" for
 *				subwindows, so these are currently no-ops.
 ***********************************************************/
void glutPopWindow() { }
void glutPushWindow() { }

/***********************************************************
 *	FUNCTION:	glutShowWindow (4.11)
 *				glutHideWindow
 *				glutIconifyWindow
 *
 *	DESCRIPTION:  change display status of current window
 ***********************************************************/
void glutShowWindow() {
	gState.currentWindow->Window()->Lock();
	if (gState.currentWindow->parent)	// subwindow
		gState.currentWindow->Show();
	else {
		if(gState.currentWindow->Window()->IsHidden())
			gState.currentWindow->Window()->Show();	// show the actual BWindow
		gState.currentWindow->Window()->Minimize(false);
	}
	gState.currentWindow->Window()->Unlock();
}

void glutHideWindow() {
	gState.currentWindow->Window()->Lock();
	if (gState.currentWindow->parent)	// subwindow
		gState.currentWindow->Hide();
	else
		gState.currentWindow->Window()->Hide();	// show the actual BWindow
	gState.currentWindow->Window()->Unlock();
}

void glutIconifyWindow() {
	if(gState.currentWindow->parent)
		__glutFatalError("can't iconify a subwindow");
		
	gState.currentWindow->Window()->Lock();
	gState.currentWindow->Window()->Minimize(true);
	gState.currentWindow->Window()->Unlock();
}

/***********************************************************
 *	FUNCTION:	glutSetWindowTitle (4.12)
 *				glutSetIconTitle
 *
 *	DESCRIPTION:  set the window title (icon title is same)
 ***********************************************************/
void glutSetWindowTitle(const char *name) {
	if (gState.currentWindow->parent)
		__glutFatalError("glutSetWindowTitle: isn't a top-level window");
	
	gState.currentWindow->Window()->Lock();
	gState.currentWindow->Window()->SetTitle(name);
	gState.currentWindow->Window()->Unlock();
}

void glutSetIconTitle(const char *name) {
	glutSetWindowTitle(name);
}

/***********************************************************
 *	FUNCTION:	__glutConvertDisplayMode
 *
 *	DESCRIPTION:  converts the current display mode into a BGLView
 *		display mode, printing warnings as appropriate.
 *
 *	PARAMETERS:	 if options is non-NULL, the current display mode is
 *		returned in it.
 *
 *	RETURNS:	1 if the current display mode is possible, else 0
 ***********************************************************/
int __glutConvertDisplayMode(unsigned long *options) {
	if (gState.displayString) {
		/* __glutDisplayString should be NULL except if
       glutInitDisplayString has been called to register a
       different display string.  Calling glutInitDisplayString
       means using a string instead of an integer mask determine
       the visual to use.  This big ugly code is in glutDstr.cpp */
       return __glutConvertDisplayModeFromString(options);
    }

	if(options) {
		ulong newoptions = 0;
		if(gState.displayMode & GLUT_ACCUM)
			newoptions |= BGL_ACCUM;
		if(gState.displayMode & GLUT_ALPHA)
			newoptions |= BGL_ALPHA;
		if(gState.displayMode & GLUT_DEPTH)
			newoptions |= BGL_DEPTH;
		if(gState.displayMode & GLUT_DOUBLE)
			newoptions |= BGL_DOUBLE;
		if(gState.displayMode & GLUT_STENCIL)
			newoptions |= BGL_STENCIL;
		*options = newoptions;
	}
	
	if(gState.displayMode & GLUT_INDEX) {
		__glutWarning("BeOS doesn't support indexed color");
		return 0;
	}
	if(gState.displayMode & GLUT_MULTISAMPLE) {
		return 1;	// try to go without multisampling
	}
	if(gState.displayMode & GLUT_STEREO) {
		__glutWarning("BeOS doesn't support stereo windows");
		return 0;
	}
	if(gState.displayMode & GLUT_LUMINANCE) {
		__glutWarning("BeOS doesn't support luminance color model");
		return 0;
	}
	return 1;	// visual supported
}

/***********************************************************
 *	CLASS:		GlutBWindow
 *
 *	DESCRIPTION:  very thin wrapper around BWindow
 ***********************************************************/
GlutBWindow::GlutBWindow(BRect frame, char *name) :
			BDirectWindow(frame, name, B_TITLED_WINDOW, 0) {
	fConnectionDisabled = false;
	bgl = 0;
	SetPulseRate(100000);
	
	if (!SupportsWindowMode()) {
		__glutFatalError("video card doesn't support windowed operation");
	}
}

void GlutBWindow::DirectConnected( direct_buffer_info *info ) {
	bgl->DirectConnected(info);
	if(bgl && !fConnectionDisabled) {
		bgl->EnableDirectMode(true);
	}
	int newVisState;
	if((info->buffer_state & B_DIRECT_MODE_MASK) == B_DIRECT_START) {
		bgl->visible = true;
	}
	if(!bgl->visible || info->buffer_state == B_DIRECT_STOP)
		newVisState = GLUT_HIDDEN;
	else {
		if (info->clip_list_count == 0)
			newVisState = GLUT_FULLY_COVERED;
		else if (info->clip_list_count == 1)
			newVisState = GLUT_FULLY_RETAINED;
		else
			newVisState = GLUT_PARTIALLY_RETAINED;
	}
	if(newVisState != bgl->visState) {
		bgl->visState = newVisState;
		bgl->anyevents = bgl->windowStatusEvent = true;
		gBlock.NewEvent();
	}
}

GlutBWindow::~GlutBWindow() {
	fConnectionDisabled = true;
	if(bgl) {
		bgl->EnableDirectMode(false);
	}
	if(!IsHidden())
		Hide();
	Sync();
}	

bool GlutBWindow::QuitRequested() {
	gState.quitAll = true;
	gBlock.NewEvent();
	return false;	// don't quit now, wait for main thread to do it
}

void GlutBWindow::Minimize(bool minimize) {
	bgl->visible = !minimize;
	BWindow::Minimize(minimize);
}

void GlutBWindow::Hide() {
	BWindow::Hide();
	bgl->visible = false;
}

void GlutBWindow::Show() {
	BWindow::Show();
	bgl->visible = true;
}