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/* This file is part of the KDE project
* Copyright (C) 2008 Jan Hambrecht <jaham@gmx.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "KoResourceItemDelegate.h"
#include <KoAbstractGradient.h>
#include <QPainter>
KoResourceItemDelegate::KoResourceItemDelegate( QObject * parent )
: QAbstractItemDelegate( parent ), m_checkerPainter( 4 )
{
}
void KoResourceItemDelegate::paint( QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index ) const
{
if( ! index.isValid() )
return;
KoResource * resource = static_cast<KoResource*>( index.internalPointer() );
if (!resource)
return;
painter->save();
if (option.state & QStyle::State_Selected)
painter->fillRect( option.rect, option.palette.highlight() );
QRect innerRect = option.rect.adjusted( 2, 1, -2, -1 );
KoAbstractGradient * gradient = dynamic_cast<KoAbstractGradient*>( resource );
if (gradient) {
QGradient * g = gradient->toQGradient();
QLinearGradient paintGradient;
paintGradient.setStops( g->stops() );
paintGradient.setStart( innerRect.topLeft() );
paintGradient.setFinalStop( innerRect.topRight() );
m_checkerPainter.paint( *painter, innerRect );
painter->fillRect( innerRect, QBrush( paintGradient ) );
delete g;
}
else {
QImage thumbnail = index.data( Qt::DecorationRole ).value<QImage>();
QSize imageSize = thumbnail.size();
if(imageSize.height() > innerRect.height() || imageSize.width() > innerRect.width()) {
qreal scaleW = static_cast<qreal>( innerRect.width() ) / static_cast<qreal>( imageSize.width() );
qreal scaleH = static_cast<qreal>( innerRect.height() ) / static_cast<qreal>( imageSize.height() );
qreal scale = qMin( scaleW, scaleH );
int thumbW = static_cast<int>( imageSize.width() * scale );
int thumbH = static_cast<int>( imageSize.height() * scale );
thumbnail = thumbnail.scaled( thumbW, thumbH, Qt::IgnoreAspectRatio, Qt::SmoothTransformation );
}
painter->setRenderHint(QPainter::SmoothPixmapTransform, true);
if (thumbnail.hasAlphaChannel()) {
painter->fillRect(innerRect, Qt::white); // no checkers, they are confusing with patterns.
}
painter->fillRect( innerRect, QBrush(thumbnail) );
}
painter->restore();
}
QSize KoResourceItemDelegate::sizeHint( const QStyleOptionViewItem & optionItem, const QModelIndex & ) const
{
return optionItem.decorationSize;
}
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