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93 lines
2.4 KiB
C++
93 lines
2.4 KiB
C++
// vim: set tabstop=4 shiftwidth=4 expandtab:
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/*
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Gwenview: an image viewer
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Copyright 2014 Aurélien Gâteau <agateau@kde.org>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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// Self
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#include "moc_hudcountdown.cpp"
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// Local
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#include <lib/hud/hudtheme.h>
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// KDE
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// Qt
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#include <QPainter>
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#include <QTimeLine>
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namespace Gwenview
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{
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struct HudCountDownPrivate
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{
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QTimeLine* mTimeLine;
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};
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HudCountDown::HudCountDown(QGraphicsWidget* parent)
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: QGraphicsWidget(parent)
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, d(new HudCountDownPrivate)
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{
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d->mTimeLine = new QTimeLine(0, this);
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d->mTimeLine->setDirection(QTimeLine::Backward);
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connect(d->mTimeLine, SIGNAL(valueChanged(qreal)), SLOT(doUpdate()));
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connect(d->mTimeLine, SIGNAL(finished()), SIGNAL(timeout()));
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// Use an odd value so that the vertical line is aligned to pixel
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// boundaries
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setMinimumSize(17, 17);
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}
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HudCountDown::~HudCountDown()
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{
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delete d;
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}
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void HudCountDown::start(qreal ms)
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{
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d->mTimeLine->setDuration(ms);
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d->mTimeLine->start();
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update();
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}
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void HudCountDown::paint(QPainter* painter, const QStyleOptionGraphicsItem*, QWidget*)
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{
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HudTheme::RenderInfo info = HudTheme::renderInfo(HudTheme::CountDown);
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painter->setRenderHint(QPainter::Antialiasing);
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const int circle = 5760;
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const int start = circle / 4; // Start at 12h, not 3h
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const int end = int(circle * d->mTimeLine->currentValue());
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painter->setBrush(info.bgBrush);
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painter->setPen(info.borderPen);
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QRectF square = boundingRect().adjusted(.5, .5, -.5, -.5);
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qreal width = square.width();
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qreal height = square.height();
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if (width < height) {
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square.setHeight(width);
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square.moveTop((height - width) / 2);
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} else {
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square.setWidth(height);
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square.moveLeft((width - height) / 2);
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}
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painter->drawPie(square, start, end);
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}
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void HudCountDown::doUpdate()
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{
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update();
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}
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} // namespace
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