/*
 * Copyright 2008 Ben Boeckel <MathStuf@gmail.com>
 * 
 * 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 3 of the License, or
 * (at your option) 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/>.
 */

// Header include
#include "TileItem.h"

// Sigmod includes
#include "../sigmod/MapTile.h"
#include "../sigmod/Sigmod.h"
#include "../sigmod/Sprite.h"
#include "../sigmod/Tile.h"

// Sigcore includes
#include "../sigcore/Script.h"

// KDE includes
#include <KColorScheme>
#include <kross/core/action.h>

// Qt includes
#include <QtGui/QPainter>
#include <QtGui/QStyle>
#include <QtGui/QStyleOptionGraphicsItem>

Sigmodr::TileItem::TileItem(Sigmod::MapTile* tile, QObject* parent) :
        QObject(parent),
        m_tile(tile)
{
    connect(m_tile, SIGNAL(changed()), this, SLOT(tileChanged()));
    tileChanged();
    setAcceptHoverEvents(true);
    Sigcore::Script script = m_tile->sigmod()->tileById(m_tile->tile())->script();
    m_action = new Kross::Action(this, QString("tile-%1").arg(m_tile->id()));
    m_action->addObject(this, "object");
    m_action->setInterpreter(script.interpreter());
    m_action->setCode(script.script().toUtf8());
    m_action->trigger();
}

QRectF Sigmodr::TileItem::boundingRect() const
{
    return m_pixmap.rect();
}

void Sigmodr::TileItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
{
    Q_UNUSED(widget)
    if (m_pixmap.isNull())
        return;
    if (!(flags() & QGraphicsItem::ItemIsSelectable))
    {
        QPixmap temp(m_pixmap.size());
        temp.fill(Qt::transparent);
        QPainter p;
        p.begin(&temp);
        p.setCompositionMode(QPainter::CompositionMode_DestinationIn);
        p.fillRect(temp.rect(), QColor(0, 0, 0, 127));
        p.end();
        painter->drawPixmap(0, 0, temp);
    }
    painter->drawPixmap(0, 0, m_pixmap);
    if (option->state & QStyle::State_HasFocus)
    {
        painter->setPen(QPen(KStatefulBrush(KColorScheme::Selection, KColorScheme::FocusColor).brush(QPalette::Active), 6));
        painter->drawRect(m_pixmap.rect());
    }
    else if (option->state & QStyle::State_Selected)
    {
        painter->setPen(QPen(KStatefulBrush(KColorScheme::Selection, KColorScheme::ActiveBackground).brush(QPalette::Active), 6));
        painter->drawRect(m_pixmap.rect());
    }
    else if ((option->state & QStyle::State_MouseOver) && (flags() & QGraphicsItem::ItemIsSelectable))
    {
        painter->setPen(QPen(KStatefulBrush(KColorScheme::Selection, KColorScheme::HoverColor).brush(QPalette::Active), 6));
        painter->drawRect(m_pixmap.rect());
    }
}

void Sigmodr::TileItem::setZIndex(const int zIndex)
{
    if (zIndex < INT_MAX)
        m_tile->setZIndex(zIndex);
}

void Sigmodr::TileItem::changeSprite(const int spriteId)
{
    const Sigmod::Sprite* sprite = m_tile->sigmod()->spriteById(spriteId);
    if (sprite)
        m_pixmap.loadFromData(sprite->sprite());
    update();
}

void Sigmodr::TileItem::mousePressEvent(QGraphicsSceneMouseEvent* event)
{
    QGraphicsItem::mousePressEvent(event);
    update();
}

void Sigmodr::TileItem::mouseMoveEvent(QGraphicsSceneMouseEvent* event)
{
    QGraphicsItem::mouseMoveEvent(event);
    m_tile->setPosition(scenePos().toPoint());
}

void Sigmodr::TileItem::mouseReleaseEvent(QGraphicsSceneMouseEvent* event)
{
    QGraphicsItem::mouseReleaseEvent(event);
    update();
}

void Sigmodr::TileItem::tileChanged()
{
    setPos(m_tile->position());
    setZValue(m_tile->zIndex());
    update();
}