/*
 *  The ManaPlus Client
 *  Copyright (C) 2004-2009  The Mana World Development Team
 *  Copyright (C) 2009-2010  The Mana Developers
 *  Copyright (C) 2011-2014  The ManaPlus Developers
 *  Copyright (C) 2009  Aethyra Development Team
 *
 *  This file is part of The ManaPlus 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/popup.h"

#include "graphicsvertexes.h"

#include "gui/viewport.h"

#include "gui/base/exception.hpp"

#include "debug.h"

Popup::Popup(const std::string &name,
             std::string skin) :
    Container(nullptr),
    gcn::MouseListener(),
    gcn::WidgetListener(),
    mPadding(3),
    mSkin(nullptr),
    mPopupName(name),
    mMinWidth(100),
    mMinHeight(40),
    mMaxWidth(mainGraphics->mWidth),
    mMaxHeight(mainGraphics->mHeight),
    mVertexes(new ImageCollection),
    mRedraw(true)
{
    logger->log("Popup::Popup(\"%s\")", name.c_str());

    if (!windowContainer)
        throw GCN_EXCEPTION("Popup::Popup(): no windowContainer set");

    addWidgetListener(this);

    if (skin == "")
        skin = "popup.xml";

    Theme *const theme = Theme::instance();
    if (theme)
    {
        mSkin = theme->load(skin, "popup.xml");
        if (mSkin)
        {
            setPadding(mSkin->getPadding());
            setPalette(mSkin->getOption("palette"));
        }
    }

    windowContainer->add(this);

    // Popups are invisible by default
    setVisible(false);
}

Popup::~Popup()
{
    logger->log("Popup::~Popup(\"%s\")", mPopupName.c_str());

    delete mVertexes;
    mVertexes = nullptr;

    if (mSkin)
    {
        Theme *const theme = Theme::instance();
        if (theme)
            theme->unload(mSkin);
        mSkin = nullptr;
    }
}

void Popup::setWindowContainer(WindowContainer *const wc)
{
    windowContainer = wc;
}

void Popup::draw(gcn::Graphics *graphics)
{
    BLOCK_START("Popup::draw")
    Graphics *const g = static_cast<Graphics*>(graphics);

    if (mSkin)
    {
        if (isBatchDrawRenders(openGLMode))
        {
            if (mRedraw)
            {
                mRedraw = false;
                mVertexes->clear();
                g->calcWindow(mVertexes, 0, 0,
                    mDimension.width, mDimension.height,
                    mSkin->getBorder());
            }

            g->drawTileCollection(mVertexes);
        }
        else
        {
            g->drawImageRect(0, 0, mDimension.width, mDimension.height,
                mSkin->getBorder());
        }
    }

    drawChildren(graphics);
    BLOCK_END("Popup::draw")
}

gcn::Rectangle Popup::getChildrenArea()
{
    const int pad2 = mPadding * 2;
    return gcn::Rectangle(mPadding, mPadding,
        mDimension.width - pad2, mDimension.height - pad2);
}

void Popup::setContentSize(int width, int height)
{
    const int pad2 = mPadding * 2;
    width += pad2;
    height += pad2;

    if (mMinWidth > width)
        width = mMinWidth;
    else if (mMaxWidth < width)
        width = mMaxWidth;
    if (mMinHeight > height)
        height = mMinHeight;
    else if (mMaxHeight < height)
        height = mMaxHeight;

    setSize(width, height);
    mRedraw = true;
}

void Popup::setLocationRelativeTo(const gcn::Widget *const widget)
{
    if (!widget)
        return;

    int wx, wy;
    int x, y;

    widget->getAbsolutePosition(wx, wy);
    getAbsolutePosition(x, y);

    setPosition(mDimension.x + (wx + (widget->getWidth()
        - mDimension.width) / 2 - x),
        mDimension.y + (wy + (widget->getHeight()
        - mDimension.height) / 2 - y));
    mRedraw = true;
}

void Popup::setMinWidth(const int width)
{
    if (mSkin)
    {
        mMinWidth = width > mSkin->getMinWidth()
            ? width : mSkin->getMinWidth();
    }
    else
    {
        mMinWidth = width;
    }
}

void Popup::setMinHeight(const int height)
{
    if (mSkin)
    {
        mMinHeight = height > mSkin->getMinHeight() ?
            height : mSkin->getMinHeight();
    }
    else
    {
        mMinHeight = height;
    }
}

void Popup::setMaxWidth(const int width)
{
    mMaxWidth = width;
}

void Popup::setMaxHeight(const int height)
{
    mMaxHeight = height;
}

void Popup::scheduleDelete()
{
    windowContainer->scheduleDelete(this);
}

void Popup::position(const int x, const int y)
{
    const int distance = 20;

    const int width = mDimension.width;
    const int height = mDimension.height;
    int posX = std::max(0, x - width / 2);
    int posY = y + distance;

    if (posX + width > mainGraphics->mWidth)
        posX = mainGraphics->mWidth - width;
    if (posY + height > mainGraphics->mHeight)
        posY = y - height - distance;

    setPosition(posX, posY);
    setVisible(true);
    requestMoveToTop();
    mRedraw = true;
}

void Popup::mouseMoved(gcn::MouseEvent &event A_UNUSED)
{
    if (viewport)
        viewport->hideBeingPopup();
    mRedraw = true;
}

void Popup::hide()
{
    setVisible(false);
    mRedraw = true;
}

void Popup::widgetResized(const gcn::Event &event A_UNUSED)
{
    mRedraw = true;
}

void Popup::widgetMoved(const gcn::Event &event A_UNUSED)
{
    mRedraw = true;
}