154 lines
4.7 KiB
C++
154 lines
4.7 KiB
C++
/*
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* Copyright 2009 Mehmet Ali Akmanalp <makmanalp@wpi.edu>
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* Copyright 2010 Marco Martin <notmart@gmail.com>
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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 "pixmaptransition_p.h"
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#include <QPainter>
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#include <QPixmap>
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#include <kdebug.h>
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#include "paintutils.h"
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namespace Plasma
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{
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PixmapTransition::PixmapTransition(QObject *parent)
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: Animation(parent)
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{
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}
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PixmapTransition::~PixmapTransition()
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{
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}
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void PixmapTransition::setStartPixmap(const QPixmap &pixmap)
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{
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if (state() != Running) {
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m_startPixmap = pixmap;
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m_currentPixmap = pixmap;
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} else {
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m_startPixmap = m_currentPixmap;
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stop();
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}
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}
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QPixmap PixmapTransition::startPixmap() const
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{
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return m_startPixmap;
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}
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void PixmapTransition::setTargetPixmap(const QPixmap &pixmap)
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{
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m_targetPixmap = pixmap;
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}
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QPixmap PixmapTransition::targetPixmap() const
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{
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return m_targetPixmap;
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}
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QPixmap PixmapTransition::currentPixmap() const
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{
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return m_currentPixmap;
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}
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void PixmapTransition::updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState)
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{
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QGraphicsWidget *w = targetWidget();
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if (!w) {
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return;
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}
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if (!m_startPixmap.isNull() && !m_targetPixmap.isNull()) {
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if (oldState == Stopped && newState == Running) {
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Plasma::PaintUtils::centerPixmaps(m_startPixmap, m_targetPixmap);
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m_currentPixmap = (direction() == Forward ? m_startPixmap : m_targetPixmap);
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} else if (newState == Stopped) {
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m_currentPixmap = (direction() == Forward ? m_targetPixmap : m_startPixmap);
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}
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} else if (m_startPixmap.isNull()) {
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if (oldState == Stopped && newState == Running) {
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if (direction() == Forward) {
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m_currentPixmap = QPixmap(m_targetPixmap.size());
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m_currentPixmap.fill(Qt::transparent);
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} else {
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m_currentPixmap = m_targetPixmap;
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}
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} else if (newState == Stopped) {
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if (direction() == Forward) {
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m_currentPixmap = m_targetPixmap;
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} else {
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m_currentPixmap = QPixmap(m_targetPixmap.size());
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m_currentPixmap.fill(Qt::transparent);
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}
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}
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} else if (m_targetPixmap.isNull()) {
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if (oldState == Stopped && newState == Running) {
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if (direction() == Forward) {
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m_currentPixmap = m_targetPixmap;
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} else {
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m_currentPixmap = QPixmap(m_targetPixmap.size());
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m_currentPixmap.fill(Qt::transparent);
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}
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} else if (newState == Stopped) {
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if (direction() == Forward) {
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m_currentPixmap = QPixmap(m_targetPixmap.size());
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m_currentPixmap.fill(Qt::transparent);
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} else {
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m_currentPixmap = m_targetPixmap;
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}
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}
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}
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w->update();
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}
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void PixmapTransition::updateCurrentTime(int currentTime)
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{
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QGraphicsWidget *w = targetWidget();
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if (w) {
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qreal delta = currentTime / qreal(duration());
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delta *= Animation::easingCurve().valueForProgress(delta);
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if (!m_startPixmap.isNull() && !m_targetPixmap.isNull()) {
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m_currentPixmap = Plasma::PaintUtils::transition(m_startPixmap, m_targetPixmap, delta);
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} else if (m_startPixmap.isNull()) {
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m_currentPixmap.fill(QColor(0, 0, 0, (int)(((qreal)255)*delta)));
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QPainter p(&m_currentPixmap);
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p.setCompositionMode(QPainter::CompositionMode_SourceIn);
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p.drawPixmap(m_currentPixmap.rect(), m_targetPixmap, m_targetPixmap.rect());
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p.end();
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} else if (m_targetPixmap.isNull()) {
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m_currentPixmap = m_targetPixmap;
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QPainter p(&m_currentPixmap);
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p.setCompositionMode(QPainter::CompositionMode_DestinationIn);
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p.fillRect(m_currentPixmap.rect(), QColor(0, 0, 0, (int)(((qreal)255)*delta)));
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p.end();
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}
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}
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Animation::updateCurrentTime(currentTime);
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if (w) {
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w->update();
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}
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}
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} //namespace Plasma
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