/*
 *  The Mana World
 *  Copyright 2008 The Mana World Development Team
 *
 *  This file is part of The Mana World.
 *
 *  The Mana World 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; either version 2 of the License, or
 *  any later version.
 *
 *  The Mana World 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 The Mana World; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  $Id$
 */

#include <algorithm>

#include "tab.h"

#include "tabbedarea.h"

#include "../../graphics.h"

#include "../../resources/image.h"
#include "../../resources/resourcemanager.h"

#include "../../utils/dtor.h"

int Tab::mInstances = 0;

enum{
    TAB_STANDARD,    // 0
    TAB_HIGHLIGHTED, // 1
    TAB_SELECTED,     // 2
    TAB_UNUSED,       // 3
    TAB_COUNT        // 4 - Must be last.
};

struct TabData
{
    char const *file;
    int gridX;
    int gridY;
};

static TabData const data[TAB_COUNT] = {
    {"graphics/gui/tab.png", 0, 0},
    {"graphics/gui/tab.png", 9, 4},
    {"graphics/gui/tabselected.png", 16, 19},
    {"graphics/gui/tab.png", 25, 23}
};

ImageRect Tab::tabImg[TAB_COUNT];

Tab::Tab() : gcn::Tab()
{
    init();
}

Tab::~Tab()
{
    mInstances--;

    if (mInstances == 0)
    {
        for (int mode = 0; mode < TAB_COUNT; mode++)
        {
            for_each(tabImg[mode].grid, tabImg[mode].grid + 9, dtor<Image*>());
        }
    }
}

void Tab::init()
{
    setFrameSize(0);

    if (mInstances == 0)
    {
        // Load the skin
        ResourceManager *resman = ResourceManager::getInstance();
        Image *tab[TAB_COUNT];

        int a, x, y, mode;

        for (mode = 0; mode < TAB_COUNT; mode++)
        {
            tab[mode] = resman->getImage(data[mode].file);
            a = 0;
            for (y = 0; y < 3; y++) {
                for (x = 0; x < 3; x++) {
                    tabImg[mode].grid[a] = tab[mode]->getSubImage(
                            data[x].gridX, data[y].gridY,
                            data[x + 1].gridX - data[x].gridX + 1,
                            data[y + 1].gridY - data[y].gridY + 1);
                    a++;
                }
            }
            tab[mode]->decRef();
        }
    }
    mInstances++;
}

void Tab::draw(gcn::Graphics *graphics)
{
    int mode;

    // check which type of tab to draw
    if (mTabbedArea && mTabbedArea->isTabSelected(this))
    {
        mode = TAB_SELECTED;
    }
    else
    {
        mode = TAB_STANDARD;
    }

    // draw tab
    static_cast<Graphics*>(graphics)->
        drawImageRect(0, 0, getWidth(), getHeight(), tabImg[mode]);

    // draw label
    drawChildren(graphics);
}