1/*
2 * Copyright © 2008 Fredrik Höglund <fredrik@kde.org>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 */
21
22#include "curtaineffect.h"
23#include "curtaineffect.moc"
24
25#include <QApplication>
26#include <QDesktopWidget>
27#include <QWidget>
28#include <QImage>
29#include <QPixmap>
30#include <QPainter>
31#include <QTimer>
32#include "config-workspace.h"
33
34#include <qimageblitz.h>
35
36CurtainEffect::CurtainEffect(QWidget *parent, QPixmap *pixmap)
37 : LogoutEffect(parent, pixmap)
38{
39}
40
41void CurtainEffect::start()
42{
43 currentY = 0;
44 nextFrame();
45 emit initialized();
46}
47
48void CurtainEffect::nextFrame()
49{
50 QImage image = QPixmap::grabWindow(QApplication::desktop()->winId(), 0, currentY,
51 parent->width(), 10 ).toImage();
52 Blitz::intensity(image, -0.4);
53 Blitz::grayscale(image);
54
55 QPainter painter(pixmap);
56 painter.drawImage(0, currentY, image);
57 painter.end();
58
59 currentY += 10;
60 parent->update(0, 0, parent->width(), currentY);
61
62 QTimer::singleShot(5, this, SLOT(nextFrame()));
63}
64
65