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/*
 * 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 "EffectItem.h"

// Sigmod includes
#include "../sigmod/MapEffect.h"
#include "../sigmod/Sigmod.h"
#include "../sigmod/Sprite.h"

// KDE includes
#include <KColorScheme>

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

Sigmodr::EffectItem::EffectItem(Sigmod::MapEffect* effect, QObject* parent) :
        QObject(parent),
        m_effect(effect)
{
    connect(m_effect, SIGNAL(changed()), this, SLOT(effectChanged()));
    effectChanged();
    setZValue(INT_MAX);
    setAcceptHoverEvents(true);
}

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

void Sigmodr::EffectItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
{
    Q_UNUSED(widget)
    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_MouseOver)
    {
        painter->setPen(QPen(KStatefulBrush(KColorScheme::View, (flags() & QGraphicsItem::ItemIsSelectable) ? KColorScheme::ActiveText : KColorScheme::InactiveText).brush((flags() & QGraphicsItem::ItemIsSelectable) ? QPalette::Active : QPalette::Inactive), 1));
        painter->drawText(m_pixmap.rect(), Qt::AlignHCenter | Qt::AlignVCenter, m_effect->name());
    }
    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::EffectItem::changeSprite(const int spriteId)
{
    const Sigmod::Sprite* sprite = m_effect->sigmod()->spriteById(spriteId);
    if (sprite)
        m_pixmap.loadFromData(sprite->sprite());
    update();
}

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

void Sigmodr::EffectItem::mouseMoveEvent(QGraphicsSceneMouseEvent* event)
{
    QGraphicsItem::mouseMoveEvent(event);
    m_effect->setCoordinate(scenePos().toPoint());
}

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

void Sigmodr::EffectItem::effectChanged()
{
    setPos(m_effect->coordinate());
    update();
}