plasma-framework/declarativeimports/core/svgitem.cpp
2013-02-02 04:42:28 +01:00

185 lines
4.2 KiB
C++

/*
* Copyright 2010 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 "svgitem.h"
#include <QPainter>
#include "kdebug.h"
#include "plasma/svg.h"
namespace Plasma
{
SvgItem::SvgItem(QQuickItem *parent)
: QQuickPaintedItem(parent),
m_smooth(false)
{
setFlag(QQuickItem::ItemHasContents, true);
}
SvgItem::~SvgItem()
{
}
void SvgItem::setElementId(const QString &elementID)
{
if (elementID == m_elementID) {
return;
}
if (implicitWidth() <= 0) {
setImplicitWidth(naturalSize().width());
}
if (implicitHeight() <= 0) {
setImplicitHeight(naturalSize().height());
}
m_elementID = elementID;
emit elementIdChanged();
emit naturalSizeChanged();
update();
}
QString SvgItem::elementId() const
{
return m_elementID;
}
QSizeF SvgItem::naturalSize() const
{
if (!m_svg) {
return QSizeF();
} else if (!m_elementID.isEmpty()) {
return m_svg.data()->elementSize(m_elementID);
}
return m_svg.data()->size();
}
void SvgItem::setSvg(Plasma::Svg *svg)
{
if (m_svg) {
disconnect(m_svg.data(), 0, this, 0);
}
m_svg = svg;
if (svg) {
connect(svg, SIGNAL(repaintNeeded()), this, SLOT(updateNeeded()));
connect(svg, SIGNAL(repaintNeeded()), this, SIGNAL(naturalSizeChanged()));
connect(svg, SIGNAL(sizeChanged()), this, SIGNAL(naturalSizeChanged()));
}
if (implicitWidth() <= 0) {
setImplicitWidth(naturalSize().width());
}
if (implicitHeight() <= 0) {
setImplicitHeight(naturalSize().height());
}
emit svgChanged();
emit naturalSizeChanged();
}
Plasma::Svg *SvgItem::svg() const
{
return m_svg.data();
}
void SvgItem::setSmooth(const bool smooth)
{
if (smooth == m_smooth) {
return;
}
m_smooth = smooth;
emit smoothChanged();
update();
}
bool SvgItem::smooth() const
{
return m_smooth;
}
void SvgItem::paint(QPainter *painter)
{
if (!m_svg) {
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);
//setContainsMultipleImages has to be done there since m_frameSvg can be shared with somebody else
m_svg.data()->setContainsMultipleImages(!m_elementID.isEmpty());
m_svg.data()->paint(painter, boundingRect(), m_elementID);
painter->setRenderHint(QPainter::Antialiasing, wasAntiAlias);
painter->setRenderHint(QPainter::SmoothPixmapTransform, wasSmoothTransform);
}
void SvgItem::updateNeeded()
{
if (implicitWidth() <= 0) {
setImplicitWidth(naturalSize().width());
}
if (implicitHeight() <= 0) {
setImplicitHeight(naturalSize().height());
}
update();
}
void SvgItem::setImplicitWidth(qreal width)
{
if (implicitWidth() == width) {
return;
}
QQuickItem::setImplicitWidth(width);
emit implicitWidthChanged();
}
qreal SvgItem::implicitWidth() const
{
return QQuickItem::implicitWidth();
}
void SvgItem::setImplicitHeight(qreal height)
{
if (implicitHeight() == height) {
return;
}
QQuickItem::setImplicitHeight(height);
emit implicitHeightChanged();
}
qreal SvgItem::implicitHeight() const
{
return QQuickItem::implicitHeight();
}
} // Plasma namespace
#include "svgitem.moc"