//     ____                _       __               
//    / __ )____  _____   | |     / /___ ___________
//   / __  / __ \/ ___/   | | /| / / __ `/ ___/ ___/
//  / /_/ / /_/ (__  )    | |/ |/ / /_/ / /  (__  ) 
// /_____/\____/____/     |__/|__/\__,_/_/  /____/  
//                                              
//       A futuristic real-time strategy game.
//          This file is part of Bos Wars.
//
/**@name menu_proc.cpp - The menu processing code. */
//
//      (c) Copyright 1999-2007 by Andreas Arens, Jimmy Salmon, Nehal Mistry
//
//      This program is free software; you can redistribute it and/or modify
//      it under the terms of the GNU General Public License as published by
//      the Free Software Foundation; only version 2 of the License.
//
//      This program is distributed in the hope that it will be useful,
//      but WITHOUT ANY WARRANTY; without even the implied warranty of
//      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//      GNU General Public License for more details.
//
//      You should have received a copy of the GNU General Public License
//      along with this program; if not, write to the Free Software
//      Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
//      02111-1307, USA.
//
//      $Id: menu_proc.cpp 8550 2007-02-10 12:33:10Z feb $

//@{

/*----------------------------------------------------------------------------
--  Includes
----------------------------------------------------------------------------*/

#include "stratagus.h"
#include "ui.h"
#include "video.h"
#include "font.h"
#include "menus.h"

/*----------------------------------------------------------------------------
-- Variables
----------------------------------------------------------------------------*/

/*----------------------------------------------------------------------------
-- Menu operation functions
----------------------------------------------------------------------------*/

/**
**  Draw menu button 'button' on x,y
**
**  @param style  Button style
**  @param flags  State of Button (clicked, mouse over...)
**  @param x      X display position
**  @param y      Y display position
**  @param text   text to print on button
*/
void DrawMenuButton(ButtonStyle *style, unsigned flags, int x, int y,
	const std::string &text)
{
	std::string nc;
	std::string rc;
	std::string oldnc;
	std::string oldrc;
	int i;
	ButtonStyleProperties *p;
	ButtonStyleProperties *pimage;

	if (flags & MI_FLAGS_CLICKED) {
		p = &style->Clicked;
	} else if (flags & MI_FLAGS_ACTIVE) {
		p = &style->Hover;
	} else {
		p = &style->Default;
	}

	//
	//  Image
	//
	pimage = p;
	if (!p->Sprite) {
		// No image.  Try hover, selected, then default
		if ((flags & MI_FLAGS_ACTIVE) && style->Hover.Sprite) {
			pimage = &style->Hover;
		} else if (style->Default.Sprite) {
			pimage = &style->Default;
		}
	}
	if (pimage->Sprite) {
		pimage->Sprite->Load();
	}
	if (pimage->Sprite) {
		pimage->Sprite->DrawFrame(pimage->Frame, x, y);
	}

	//
	//  Text
	//
	if (!text.empty()) {
		GetDefaultTextColors(oldnc, oldrc);
		nc = !p->TextNormalColor.empty() ? p->TextNormalColor :
			!style->TextNormalColor.empty() ? style->TextNormalColor : oldnc;
		rc = !p->TextReverseColor.empty() ? p->TextReverseColor :
			!style->TextReverseColor.empty() ? style->TextReverseColor : oldrc;
		SetDefaultTextColors(nc, rc);

		if (p->TextAlign == TextAlignCenter || p->TextAlign == TextAlignUndefined) {
			VideoDrawTextCentered(x + p->TextX, y + p->TextY,
				style->Font, text);
		} else if (p->TextAlign == TextAlignLeft) {
			VideoDrawText(x + p->TextX, y + p->TextY, style->Font, text);
		} else {
			VideoDrawText(x + p->TextX - style->Font->Width(text), y + p->TextY,
				style->Font, text);
		}

		SetDefaultTextColors(oldnc, oldrc);
	}

	//
	//  Border
	//
	if (!p->BorderColor) {
		p->BorderColor = Video.MapRGB(TheScreen->format,
			p->BorderColorRGB.r, p->BorderColorRGB.g, p->BorderColorRGB.b);
	}
	if (p->BorderSize) {
		for (i = 0; i < p->BorderSize; ++i) {
			Video.DrawRectangleClip(p->BorderColor, x - i, y - i,
				style->Width + 2 * i, style->Height + 2 * i);
		}
	}
}

//@}