1 /* This file is part of the KDE project
2 *
3 * Copyright (C) 2010 Thorsten Zachmann <zachmann@kde.org>
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21 #include "KPrFadeCrossStrategy.h"
22 #include "KPrFadeEffectFactory.h"
23
24 #include <QWidget>
25 #include <QPainter>
26 #include <QGraphicsPixmapItem>
27 #include <QGraphicsView>
28
29
KPrFadeCrossStrategy()30 KPrFadeCrossStrategy::KPrFadeCrossStrategy()
31 : KPrPageEffectStrategy(KPrFadeEffectFactory::CrossFade, "fade", "crossfade", false, true)
32 {
33 }
34
~KPrFadeCrossStrategy()35 KPrFadeCrossStrategy::~KPrFadeCrossStrategy()
36 {
37 }
38
setup(const KPrPageEffect::Data & data,QTimeLine & timeLine)39 void KPrFadeCrossStrategy::setup( const KPrPageEffect::Data &data, QTimeLine &timeLine )
40 {
41 timeLine.setFrameRange(0, 1000); // TODO might not be needed
42 data.m_oldPageItem->setZValue(1);
43 data.m_newPageItem->setZValue(2);
44 data.m_newPageItem->setOpacity(0);
45 data.m_oldPageItem->show();
46 data.m_newPageItem->show();
47 }
48
paintStep(QPainter & p,int currPos,const KPrPageEffect::Data & data)49 void KPrFadeCrossStrategy::paintStep( QPainter &p, int currPos, const KPrPageEffect::Data &data )
50 {
51 Q_UNUSED(p);
52 Q_UNUSED(currPos);
53 Q_UNUSED(data);
54 }
55
next(const KPrPageEffect::Data & data)56 void KPrFadeCrossStrategy::next( const KPrPageEffect::Data &data )
57 {
58 int frame = data.m_timeLine.frameForTime(data.m_currentTime);
59 if (frame >= data.m_timeLine.endFrame()) {
60 finish(data);
61 }
62 else {
63 qreal value = data.m_timeLine.valueForTime(data.m_currentTime);
64 data.m_newPageItem->setOpacity(value);
65 }
66 }
67
finish(const KPrPageEffect::Data & data)68 void KPrFadeCrossStrategy::finish(const KPrPageEffect::Data &data)
69 {
70 data.m_graphicsView->hide();
71 }
72