glutevent.cpp

mesa-6.5-minigui源码

  ulong aChar = s[0];
  BGLView::KeyDown(s,slen);
  
  BPoint p;
	
	switch (aChar) {
		case B_FUNCTION_KEY:
		switch(Window()->CurrentMessage()->FindInt32("key")) {
			case B_F1_KEY:
				aChar = GLUT_KEY_F1;
				goto specialLabel;
			case B_F2_KEY:
				aChar = GLUT_KEY_F2;
				goto specialLabel;
			case B_F3_KEY:
				aChar = GLUT_KEY_F3;
				goto specialLabel;
			case B_F4_KEY:
				aChar = GLUT_KEY_F4;
				goto specialLabel;
			case B_F5_KEY:
				aChar = GLUT_KEY_F5;
				goto specialLabel;
			case B_F6_KEY:
				aChar = GLUT_KEY_F6;
				goto specialLabel;
			case B_F7_KEY:
				aChar = GLUT_KEY_F7;
				goto specialLabel;
			case B_F8_KEY:
				aChar = GLUT_KEY_F8;
				goto specialLabel;
			case B_F9_KEY:
				aChar = GLUT_KEY_F9;
				goto specialLabel;
			case B_F10_KEY:
				aChar = GLUT_KEY_F10;
				goto specialLabel;
			case B_F11_KEY:
				aChar = GLUT_KEY_F11;
				goto specialLabel;
			case B_F12_KEY:
				aChar = GLUT_KEY_F12;
				goto specialLabel;
			default:
				return;
		}
		case B_LEFT_ARROW:
			aChar = GLUT_KEY_LEFT;
			goto specialLabel;
		case B_UP_ARROW:
			aChar = GLUT_KEY_UP;
			goto specialLabel;
		case B_RIGHT_ARROW:
			aChar = GLUT_KEY_RIGHT;
			goto specialLabel;
		case B_DOWN_ARROW:
			aChar = GLUT_KEY_DOWN;
			goto specialLabel;
		case B_PAGE_UP:
			aChar = GLUT_KEY_PAGE_UP;
			goto specialLabel;
		case B_PAGE_DOWN:
			aChar = GLUT_KEY_PAGE_DOWN;
			goto specialLabel;
		case B_HOME:
			aChar = GLUT_KEY_HOME;
			goto specialLabel;
		case B_END:
			aChar = GLUT_KEY_END;
			goto specialLabel;
		case B_INSERT:
            aChar = GLUT_KEY_INSERT;
specialLabel:	
			if (special) {
				anyevents = specialEvent = true;
				GetMouse(&p,&m_buttons);
				specialKey = aChar;
				specialX = (int)p.x;
				specialY = (int)p.y;
				goto setModifiers;	// set the modifier variable
			}
			return;

		default:
			break;
	}
		
	if (keyboard) {
		anyevents = keybEvent = true;
		GetMouse(&p,&m_buttons);
		key = aChar;
		keyX = (int)p.x;
		keyY = (int)p.y;
setModifiers:
		modifierKeys = 0;
		uint32 beMod = Window()->CurrentMessage()->FindInt32("modifiers");
		if(beMod & B_SHIFT_KEY)
			modifierKeys |= GLUT_ACTIVE_SHIFT;
		if(beMod & B_CONTROL_KEY)
			modifierKeys |= GLUT_ACTIVE_CTRL;
		if(beMod & B_OPTION_KEY) {
			// since the window traps B_COMMAND_KEY, we'll have to settle
			// for the option key.. but we need to get the raw character,
			// not the Unicode-enhanced version
			key = Window()->CurrentMessage()->FindInt32("raw_char");
			modifierKeys |= GLUT_ACTIVE_ALT;
		}
		gBlock.NewEvent();
	}
}

/***********************************************************
 *	CLASS:		GlutWindow
 *
 *	FUNCTION:	MouseDown
 *
 *	DESCRIPTION:  handles mouse and menustatus events
 ***********************************************************/
void GlutWindow::MouseDown(BPoint point)
{
	BGLView::MouseDown(point);
	MouseCheck();
}

/***********************************************************
 *	CLASS:		GlutWindow
 *
 *	FUNCTION:	MouseCheck
 *
 *	DESCRIPTION:  checks for button state changes
 ***********************************************************/
void GlutWindow::MouseCheck()
{
	if (mouseEvent)
		return;		// we already have an outstanding mouse event

	BPoint point;
	uint32 newButtons;
	GetMouse(&point, &newButtons);
	if (m_buttons != newButtons) {
		if (newButtons&B_PRIMARY_MOUSE_BUTTON && !(m_buttons&B_PRIMARY_MOUSE_BUTTON)) {
			button = GLUT_LEFT_BUTTON;
			mouseState = GLUT_DOWN;
		} else if (m_buttons&B_PRIMARY_MOUSE_BUTTON && !(newButtons&B_PRIMARY_MOUSE_BUTTON)) {
			button = GLUT_LEFT_BUTTON;
			mouseState = GLUT_UP;
		} else if (newButtons&B_SECONDARY_MOUSE_BUTTON && !(m_buttons&B_SECONDARY_MOUSE_BUTTON)) {
			button = GLUT_RIGHT_BUTTON;
			mouseState = GLUT_DOWN;
		} else if (m_buttons&B_SECONDARY_MOUSE_BUTTON && !(newButtons&B_SECONDARY_MOUSE_BUTTON)) {
			button = GLUT_RIGHT_BUTTON;
			mouseState = GLUT_UP;
		} else if (newButtons&B_TERTIARY_MOUSE_BUTTON && !(m_buttons&B_TERTIARY_MOUSE_BUTTON)) {
			button = GLUT_MIDDLE_BUTTON;
			mouseState = GLUT_DOWN;
		} else if (m_buttons&B_TERTIARY_MOUSE_BUTTON && !(newButtons&B_TERTIARY_MOUSE_BUTTON)) {
			button = GLUT_MIDDLE_BUTTON;
			mouseState = GLUT_UP;
		}
	} else {
		return;		// no change, return
	}
	m_buttons = newButtons;

	if (mouseState == GLUT_DOWN) {
		BWindow *w = Window();
		GlutMenu *m = __glutGetMenuByNum(menu[button]);
		if (m) {
			if (gState.menuStatus) {
				anyevents = statusEvent = true;
				menuNumber = menu[button];
				menuStatus = GLUT_MENU_IN_USE;
				statusX = (int)point.x;
				statusY = (int)point.y;
				gBlock.NewEvent();
			}		
			BRect bounds = w->Frame();
			point.x += bounds.left;
			point.y += bounds.top;
			GlutPopUp *bmenu = static_cast<GlutPopUp*>(m->CreateBMenu());	// start menu
			bmenu->point = point;
			bmenu->win = this;
			thread_id menu_thread = spawn_thread(MenuThread, "menu thread", B_NORMAL_PRIORITY, bmenu);
			resume_thread(menu_thread);
			return;
		}
	}

	if (mouse) {
		anyevents = mouseEvent = true;
		mouseX = (int)point.x;
		mouseY = (int)point.y;
		modifierKeys = 0;
		uint32 beMod = modifiers();
		if(beMod & B_SHIFT_KEY)
			modifierKeys |= GLUT_ACTIVE_SHIFT;
		if(beMod & B_CONTROL_KEY)
			modifierKeys |= GLUT_ACTIVE_CTRL;
		if(beMod & B_OPTION_KEY) {
			modifierKeys |= GLUT_ACTIVE_ALT;
		}
		gBlock.NewEvent();
	}
}

/***********************************************************
 *	CLASS:		GlutWindow
 *
 *	FUNCTION:	MouseMoved
 *
 *	DESCRIPTION:  handles entry, motion, and passive events
 ***********************************************************/
void GlutWindow::MouseMoved(BPoint point,
						ulong transit, const BMessage *msg)
{
	BGLView::MouseMoved(point,transit,msg);
	
	if(transit != B_INSIDE_VIEW) {
		if (entry) {
			anyevents = entryEvent = true;
			gBlock.NewEvent();
		}
		if (transit == B_ENTERED_VIEW) {
			entryState = GLUT_ENTERED;
			MakeFocus();	// make me the current focus
			__glutSetCursor(cursor);
		} else
			entryState = GLUT_LEFT;
	}
	
	MouseCheck();
	if(m_buttons) {
		if(motion) {
			anyevents = motionEvent = true;
			motionX = (int)point.x;
			motionY = (int)point.y;
			gBlock.NewEvent();
		}
	} else {
		if(passive) {
			anyevents = passiveEvent = true;
			passiveX = (int)point.x;
			passiveY = (int)point.y;
			gBlock.NewEvent();
		}
	}
}

/***********************************************************
 *	CLASS:		GlutWindow
 *
 *	FUNCTION:	FrameResized
 *
 *	DESCRIPTION:  handles reshape event
 ***********************************************************/
void GlutWindow::FrameResized(float width, float height)
{
	BGLView::FrameResized(width, height);
	if (visible) {
		anyevents = reshapeEvent = true;
		m_width = (int)(width)+1;
		m_height = (int)(height)+1;
		gBlock.NewEvent();
	}
}

/***********************************************************
 *	CLASS:		GlutWindow
 *
 *	FUNCTION:	Draw
 *
 *	DESCRIPTION:  handles reshape and display events
 ***********************************************************/
void GlutWindow::Draw(BRect updateRect)
{
	BGLView::Draw(updateRect);
	BRect frame = Frame();
	if (m_width != (frame.Width()+1) || m_height != (frame.Height()+1)) {
		FrameResized(frame.Width(), frame.Height());
	}
	Window()->Lock();
	if (visible) {
		anyevents = displayEvent = true;
		gBlock.NewEvent();
	}
	Window()->Unlock();
}

/***********************************************************
 *	CLASS:		GlutWindow
 *
 *	FUNCTION:	Pulse
 *
 *	DESCRIPTION:  handles mouse up event (MouseUp is broken)
 ***********************************************************/
void GlutWindow::Pulse()
{
	BGLView::Pulse();
	if (m_buttons) {	// if there are buttons pressed
		MouseCheck();
	}
}

/***********************************************************
 *	CLASS:		GlutWindow
 *
 *	FUNCTION:	ErrorCallback
 *
 *	DESCRIPTION:  handles GL error messages
 ***********************************************************/
void GlutWindow::ErrorCallback(GLenum errorCode) {
	__glutWarning("GL error: %s", gluErrorString(errorCode));
}

/***********************************************************
 *	CLASS:		GlutWindow
 *
 *	FUNCTION:	MenuThread
 *
 *	DESCRIPTION:  a new thread to launch popup menu, wait
 *			wait for response, then clean up afterwards and
 *			send appropriate messages
 ***********************************************************/
long GlutWindow::MenuThread(void *m) {
	GlutPopUp *bmenu = static_cast<GlutPopUp*>(m);
	GlutWindow *win = bmenu->win;	// my window
	GlutBMenuItem *result = (GlutBMenuItem*)bmenu->Go(bmenu->point);
	win->Window()->Lock();
	win->anyevents = win->statusEvent = true;
	win->menuStatus = GLUT_MENU_NOT_IN_USE;
	win->menuNumber = bmenu->menu;
	BPoint cursor;
	uint32 buttons;
	win->GetMouse(&cursor, &buttons);
	win->statusX = (int)cursor.x;
	win->statusY = (int)cursor.y;
	if(result && result->menu) {
		win->menuEvent = true;
		win->menuNumber = result->menu;  // in case it was a submenu
		win->menuValue = result->value;
	}
	win->Window()->Unlock();
	gBlock.NewEvent();
	delete bmenu;
	return 0;
}