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120 lines
3.1 KiB
C++
120 lines
3.1 KiB
C++
/*
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* Copyright (C) 2007 Petri Damsten <damu@iki.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "monitorbutton.h"
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#include <QIcon>
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#include <QPainter>
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#include <QTimeLine>
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#include <KDebug>
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#include <KIcon>
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#include <KPushButton>
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#include <Plasma/PaintUtils>
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#define MARGIN 2
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class MonitorButton::Private
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{
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public:
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Private() : imageSize(32, 32)
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{
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}
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QSize imageSize;
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QString image;
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KIcon icon;
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QTimeLine highlighter;
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};
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MonitorButton::MonitorButton(QGraphicsWidget *parent) :
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Plasma::PushButton(parent),
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d(new Private)
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{
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setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
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setPreferredSize(d->imageSize.width() + 2 * MARGIN, d->imageSize.height() + 2 * MARGIN);
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d->highlighter.setDuration(100);
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d->highlighter.setFrameRange(0, 10);
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d->highlighter.setCurveShape(QTimeLine::EaseInCurve);
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connect(&d->highlighter, SIGNAL(valueChanged(qreal)), this, SLOT(highlight()));
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}
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MonitorButton::~MonitorButton()
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{
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delete d;
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}
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QString MonitorButton::image() const
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{
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return d->image;
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}
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void MonitorButton::setImage(const QString &image)
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{
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d->image = image;
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d->icon = KIcon(image);
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update();
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}
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void MonitorButton::highlight()
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{
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update();
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}
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void MonitorButton::hoverEnterEvent(QGraphicsSceneHoverEvent * event)
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{
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Q_UNUSED(event)
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d->highlighter.setDirection(QTimeLine::Forward);
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if (d->highlighter.currentValue() < 1 &&
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d->highlighter.state() == QTimeLine::NotRunning) {
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d->highlighter.start();
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}
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}
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void MonitorButton::hoverLeaveEvent(QGraphicsSceneHoverEvent * event)
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{
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Q_UNUSED(event)
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d->highlighter.setDirection(QTimeLine::Backward);
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if (d->highlighter.currentValue() > 0 &&
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d->highlighter.state() == QTimeLine::NotRunning) {
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d->highlighter.start();
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}
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}
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void MonitorButton::paint(QPainter *p,
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const QStyleOptionGraphicsItem *option,
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QWidget *widget)
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{
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Q_UNUSED(option)
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Q_UNUSED(widget)
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QPixmap icon = Plasma::PaintUtils::transition(d->icon.pixmap(d->imageSize, QIcon::Disabled),
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d->icon.pixmap(d->imageSize, QIcon::Normal),
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isChecked() ? 1 : d->highlighter.currentValue());
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p->drawPixmap(QPointF((size().width() - d->imageSize.width()) / 2,
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(size().height() - d->imageSize.height()) / 2),
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icon);
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}
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#include "moc_monitorbutton.cpp"
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