//
// Copyright (C) 1996 Ben Ross
//
// You may distribute under the terms of the GNU General Public
// License as specified in the COPYING file.
//

// $Id: XeOptionMenu.C,v 1.3 1999/10/21 09:10:05 ben Exp $

#include <XeOptionMenu.h>
#include <XeMenu.h>

#define DOTWIDTH 10
#define DOTHEIGHT 6

XeOptionMenu::XeOptionMenu(XeObject* parent, const char* name, const char* className) :
	XeLabel(parent, name, className)
{
	_borderWidth = 2;
	_justify = XeLabel::XE_JUSTIFY_LEFT;
	_inMenu = FALSE;
	_state = -1;
	
	_menu = new XeMenu(this, "");
	_menu->addCallback(KrPMF<XeOptionMenu>(&XeOptionMenu::menuCB, this), XE_CB_ACTIVATE);
	
	XGCValues values;
	ulong valmask;
	
	valmask = GCForeground;
	values.foreground = lookupColour(this, "grey40");
	_shadowGC = getGC(this, &values, valmask);
	values.foreground = lookupColour(this, "grey90");
	_rshadowGC = getGC(this, &values, valmask);
	
	XSelectInput(gDisplay, _window, (ButtonPressMask | ButtonReleaseMask 
		    | ButtonMotionMask | ExposureMask));
	
	setLabel("-");
}

XeOptionMenu::~XeOptionMenu(void)
{
	delete _menu;
}

int
XeOptionMenu::doEvent(XEvent* theEvent)
{
	switch(theEvent->type) {
		case Expose:
			doExpose();
			break;
		case ButtonPress:
		case ButtonRelease:
			doButton((XButtonEvent *)theEvent);
			break;
		case MotionNotify:
			doMotion((XMotionEvent *)theEvent);
			break;
		default:
			XeObject::doEvent(theEvent);
    }
    return 0;
}

void
XeOptionMenu::setLabel(const char* label)
{
	XeLabel::setLabel(label);
	doExpose();
	
	if(_autoSize)
		resize(_width + DOTWIDTH + 4, _height);
}

void
XeOptionMenu::doExpose(void)
{
	XRectangle r1 = { 0, 0, _width, _height };
	
	drawBorder(r1, _borderWidth, _rshadowGC, _shadowGC);
	
	r1.x = _width - _borderWidth - DOTWIDTH - 2;
	r1.y = _height / 2 - DOTWIDTH / 2 + 1;
	r1.width = DOTWIDTH;
	r1.height = DOTHEIGHT;
	
	drawBorder(r1, 2, _rshadowGC, _shadowGC);
	
	drawText();
}

void
XeOptionMenu::doButton(XButtonEvent* event)
{
	if(event->type == ButtonPress) {
		XRaiseWindow(gDisplay, _menu->getWindow());
		
		int xroot, yroot;
		getRootCoords(xroot, yroot);
		
		_menu->move(xroot, yroot);
		_menu->show();
		
		
	} else if(event->type == ButtonRelease) {
		_menu->hide();
		XFlush(gDisplay);
		_menu->doSelect();
		
		_inMenu = FALSE;
	}
}

void
XeOptionMenu::doMotion(XMotionEvent* event)
{	
	if(event->x_root >= _menu->x() &&
		event->y_root >= _menu->y() &&
		event->x_root < int(_menu->x() + _menu->width()) &&
		event->y_root < int(_menu->y() + _menu->height())) 
	{
		int mx = event->x_root - _menu->x();
		int my = event->y_root - _menu->y();
		
		_inMenu = TRUE;
		_menu->doMotion(mx, my);
		
	} else if(_inMenu) {
		_menu->doLeaveNotify();
		_inMenu = FALSE;		
	}
}

void
XeOptionMenu::menuCB(const void* data)
{
	XeObject::CBData* cbdata = (XeObject::CBData*)data;
	XeMenuItem* item = ((XeMenuCBData*)cbdata->callData)->_item;
	
	_state = item->index();
	setLabel(((XeTextItem*)item)->getLabel());
}