/*
 *  The Mana Client
 *  Copyright (C) 2004-2009  The Mana World Development Team
 *  Copyright (C) 2009-2010  The Mana Developers
 *
 *  This file is part of The Mana Client.
 *
 *  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; either version 2 of the License, or
 *  any later version.
 *
 *  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, see <http://www.gnu.org/licenses/>.
 */

#include "gui/widgets/shoplistbox.h"

#include "configuration.h"
#include "graphics.h"
#include "shopitem.h"

#include "gui/itempopup.h"
#include "gui/theme.h"
#include "gui/viewport.h"

#include "gui/widgets/shopitems.h"

#include "resources/image.h"

#include <guichan/font.hpp>
#include <guichan/listmodel.hpp>

const int ITEM_ICON_SIZE = 32;

float ShopListBox::mAlpha = 1.0;

ShopListBox::ShopListBox(gcn::ListModel *listModel):
    ListBox(listModel),
    mPlayerMoney(0),
    mShopItems(0)
{
    mRowHeight = getFont()->getHeight();
    mPriceCheck = true;

    mItemPopup = new ItemPopup;
}

ShopListBox::ShopListBox(gcn::ListModel *listModel, ShopItems *shopListModel):
    ListBox(listModel),
    mPlayerMoney(0),
    mShopItems(shopListModel)
{
    mRowHeight = std::max(getFont()->getHeight(), ITEM_ICON_SIZE);
    mPriceCheck = true;

    mItemPopup = new ItemPopup;
}

void ShopListBox::setPlayersMoney(int money)
{
    mPlayerMoney = money;
}

void ShopListBox::draw(gcn::Graphics *gcnGraphics)
{
    if (!mListModel)
        return;

    if (config.getValue("guialpha", 0.8) != mAlpha)
        mAlpha = static_cast<float>(config.getValue("guialpha", 0.8));

    int alpha = static_cast<int>(mAlpha * 255.0f);
    const gcn::Color* highlightColor =
            &Theme::getThemeColor(Theme::HIGHLIGHT, alpha);

    Graphics *graphics = static_cast<Graphics*>(gcnGraphics);

    graphics->setFont(getFont());

    // Draw the list elements
    for (int i = 0, y = 0;
         i < mListModel->getNumberOfElements();
         ++i, y += mRowHeight)
    {
        gcn::Color temp;
        const gcn::Color* backgroundColor =
                &Theme::getThemeColor(Theme::BACKGROUND, alpha);

        if (mShopItems &&
                mPlayerMoney < mShopItems->at(i)->getPrice() && mPriceCheck)
        {
            if (i != mSelected)
            {
                backgroundColor = &Theme::getThemeColor(Theme::SHOP_WARNING,
                                                        alpha);
            }
            else
            {
                temp = Theme::getThemeColor(Theme::SHOP_WARNING, alpha);
                temp.r = (temp.r + highlightColor->r) / 2;
                temp.g = (temp.g + highlightColor->g) / 2;
                temp.b = (temp.g + highlightColor->b) / 2;
                backgroundColor = &temp;
            }
        }
        else if (i == mSelected)
        {
            backgroundColor = highlightColor;
        }

        graphics->setColor(*backgroundColor);
        graphics->fillRectangle(gcn::Rectangle(0, y, getWidth(), mRowHeight));

        if (mShopItems)
        {
            Image *icon = mShopItems->at(i)->getImage();
            if (icon)
            {
                icon->setAlpha(1.0f);
                graphics->drawImage(icon, 1, y);
            }
        }
        graphics->setColor(Theme::getThemeColor(Theme::TEXT));
        graphics->drawText(mListModel->getElementAt(i), ITEM_ICON_SIZE + 5,
                y + (ITEM_ICON_SIZE - getFont()->getHeight()) / 2);
    }
}

void ShopListBox::adjustSize()
{
    if (mListModel)
        setHeight(mRowHeight * mListModel->getNumberOfElements());
}

void ShopListBox::setPriceCheck(bool check)
{
    mPriceCheck = check;
}

void ShopListBox::mouseMoved(gcn::MouseEvent &event)
{
    if (!mShopItems)
    {
        if (mItemPopup)
            mItemPopup->setVisible(false);
        return;
    }

    int index = event.getY() / mRowHeight;

    if (index < 0 || index >= mShopItems->getNumberOfElements())
    {
        mItemPopup->setVisible(false);
    }
    else
    {
        Item *item = mShopItems->at(index);
        if (item)
        {
            mItemPopup->setItem(item->getInfo());
            mItemPopup->position(viewport->getMouseX(), viewport->getMouseY());
        }
        else
        {
            mItemPopup->setVisible(false);
        }
    }
}
