plasma-framework/widgets/svgwidget.cpp

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/*
* Copyright 2008 by Davide Bettio <davide.bettio@kdemail.net>
*
* 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 "svgwidget.h"
#include <QPainter>
#include <QGraphicsSceneMouseEvent>
#include "kdebug.h"
#include "svg.h"
namespace Plasma
{
class SvgWidgetPrivate
{
public:
SvgWidgetPrivate(SvgWidget *widget, Svg *s, const QString &element)
: q(widget), svg(s), elementID(element)
{
}
void svgChanged()
{
q->update();
}
SvgWidget *q;
Svg *svg;
QString elementID;
};
SvgWidget::SvgWidget(QGraphicsItem *parent, Qt::WindowFlags wFlags)
: QGraphicsWidget(parent, wFlags),
d(new SvgWidgetPrivate(this, 0, QString()))
{
}
SvgWidget::SvgWidget(Svg *svg, const QString &elementID, QGraphicsItem *parent, Qt::WindowFlags wFlags)
: QGraphicsWidget(parent, wFlags),
d(new SvgWidgetPrivate(this, svg, elementID))
{
}
SvgWidget::~SvgWidget()
{
delete d;
}
void SvgWidget::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
// we check for receivers so that SvgWidgets that aren't being used for events remain "click
// transparent"
if (receivers(SIGNAL(clicked(Qt::MouseButton)))) {
event->accept();
} else {
QGraphicsWidget::mousePressEvent(event);
}
}
void SvgWidget::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
if (boundingRect().contains(event->pos())) {
emit clicked(event->button());
}
}
void SvgWidget::setSvg(Svg *svg)
{
if (d->svg) {
disconnect(d->svg);
}
d->svg = svg;
if (svg) {
connect(svg, SIGNAL(repaintNeeded()), this, SLOT(svgChanged()));
}
update();
}
Svg *SvgWidget::svg() const
{
return d->svg;
}
void SvgWidget::setElementID(const QString &elementID)
{
if (d->svg) {
d->svg->setContainsMultipleImages(!elementID.isNull());
}
d->elementID = elementID;
update();
}
QString SvgWidget::elementID() const
{
return d->elementID;
}
void SvgWidget::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(option);
Q_UNUSED(widget);
if (d->svg){
d->svg->paint(painter, boundingRect(), d->elementID);
}
}
QSizeF SvgWidget::sizeHint(Qt::SizeHint which, const QSizeF & constraint) const
{
if (d->svg && which == Qt::PreferredSize) {
if (d->elementID.isNull()) {
return d->svg->size();
} else {
return d->svg->elementSize(d->elementID);
}
} else {
return QGraphicsWidget::sizeHint(which, constraint);
}
}
} // Plasma namespace
#include "moc_svgwidget.cpp"