1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "dbscreen.h"
#include <QApplication>
//! [0]
bool DBScreen::initDevice()
{
if (!QLinuxFbScreen::initDevice())
return false;
QScreenCursor::initSoftwareCursor();
image = new QImage(deviceWidth(), deviceHeight(), pixelFormat());
painter = new QPainter(image);
return true;
}
//! [0]
//! [1]
void DBScreen::shutdownDevice()
{
QLinuxFbScreen::shutdownDevice();
delete painter;
delete image;
}
//! [1]
//! [2]
void DBScreen::solidFill(const QColor &color, const QRegion ®ion)
{
QVector<QRect> rects = region.rects();
for (int i = 0; i < rects.size(); i++)
painter->fillRect(rects.at(i), color);
}
//! [2]
//! [3]
void DBScreen::blit(const QImage &image, const QPoint &topLeft, const QRegion ®ion)
{
QVector<QRect> rects = region.rects();
for (int i = 0; i < rects.size(); i++) {
QRect destRect = rects.at(i);
QRect srcRect(destRect.x()-topLeft.x(), destRect.y()-topLeft.y(), destRect.width(), destRect.height());
painter->drawImage(destRect.topLeft(), image, srcRect);
}
}
//! [3]
//! [4]
void DBScreen::exposeRegion(QRegion region, int changing)
{
QLinuxFbScreen::exposeRegion(region, changing);
QLinuxFbScreen::blit(*image, QPoint(0, 0), region);
}
//! [4]
|
