plasma-framework/declarativeimports/qtextracomponents/qimageitem.cpp

95 lines
2.4 KiB
C++

/*
* Copyright 2011 Marco Martin <mart@kde.org>
*
* This program 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, 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 Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "qimageitem.h"
#include <QtGui/QPainter>
QImageItem::QImageItem(QDeclarativeItem *parent)
: QDeclarativeItem(parent),
m_smooth(false)
{
setFlag(QGraphicsItem::ItemHasNoContents, false);
}
QImageItem::~QImageItem()
{
}
void QImageItem::setImage(const QImage &image)
{
m_image = image;
update();
emit nativeWidthChanged();
emit nativeHeightChanged();
}
QImage QImageItem::image() const
{
return m_image;
}
void QImageItem::setSmooth(const bool smooth)
{
if (smooth == m_smooth) {
return;
}
m_smooth = smooth;
update();
}
bool QImageItem::smooth() const
{
return m_smooth;
}
int QImageItem::nativeWidth() const
{
return m_image.size().width();
}
int QImageItem::nativeHeight() const
{
return m_image.size().height();
}
void QImageItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(option);
Q_UNUSED(widget);
if (m_image.isNull()) {
return;
}
//do without painter save, faster and the support can be compiled out
const bool wasAntiAlias = painter->testRenderHint(QPainter::Antialiasing);
const bool wasSmoothTransform = painter->testRenderHint(QPainter::SmoothPixmapTransform);
painter->setRenderHint(QPainter::Antialiasing, m_smooth);
painter->setRenderHint(QPainter::SmoothPixmapTransform, m_smooth);
painter->drawImage(boundingRect(), m_image, m_image.rect());
painter->setRenderHint(QPainter::Antialiasing, wasAntiAlias);
painter->setRenderHint(QPainter::SmoothPixmapTransform, wasSmoothTransform);
}
#include "qimageitem.moc"