1 | /****************************************************************************
|
---|
2 | **
|
---|
3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
|
---|
4 | ** All rights reserved.
|
---|
5 | ** Contact: Nokia Corporation (qt-info@nokia.com)
|
---|
6 | **
|
---|
7 | ** This file is part of the examples of the Qt Toolkit.
|
---|
8 | **
|
---|
9 | ** $QT_BEGIN_LICENSE:BSD$
|
---|
10 | ** You may use this file under the terms of the BSD license as follows:
|
---|
11 | **
|
---|
12 | ** "Redistribution and use in source and binary forms, with or without
|
---|
13 | ** modification, are permitted provided that the following conditions are
|
---|
14 | ** met:
|
---|
15 | ** * Redistributions of source code must retain the above copyright
|
---|
16 | ** notice, this list of conditions and the following disclaimer.
|
---|
17 | ** * Redistributions in binary form must reproduce the above copyright
|
---|
18 | ** notice, this list of conditions and the following disclaimer in
|
---|
19 | ** the documentation and/or other materials provided with the
|
---|
20 | ** distribution.
|
---|
21 | ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
|
---|
22 | ** the names of its contributors may be used to endorse or promote
|
---|
23 | ** products derived from this software without specific prior written
|
---|
24 | ** permission.
|
---|
25 | **
|
---|
26 | ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
---|
27 | ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
---|
28 | ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
---|
29 | ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
---|
30 | ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
---|
31 | ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
---|
32 | ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
---|
33 | ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
---|
34 | ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
---|
35 | ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
---|
36 | ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
---|
37 | ** $QT_END_LICENSE$
|
---|
38 | **
|
---|
39 | ****************************************************************************/
|
---|
40 |
|
---|
41 | #include "dbscreen.h"
|
---|
42 | #include <QApplication>
|
---|
43 |
|
---|
44 | //! [0]
|
---|
45 | bool DBScreen::initDevice()
|
---|
46 | {
|
---|
47 | if (!QLinuxFbScreen::initDevice())
|
---|
48 | return false;
|
---|
49 |
|
---|
50 | QScreenCursor::initSoftwareCursor();
|
---|
51 | image = new QImage(deviceWidth(), deviceHeight(), pixelFormat());
|
---|
52 | painter = new QPainter(image);
|
---|
53 |
|
---|
54 | return true;
|
---|
55 | }
|
---|
56 | //! [0]
|
---|
57 |
|
---|
58 | //! [1]
|
---|
59 | void DBScreen::shutdownDevice()
|
---|
60 | {
|
---|
61 | QLinuxFbScreen::shutdownDevice();
|
---|
62 | delete painter;
|
---|
63 | delete image;
|
---|
64 | }
|
---|
65 | //! [1]
|
---|
66 |
|
---|
67 | //! [2]
|
---|
68 | void DBScreen::solidFill(const QColor &color, const QRegion ®ion)
|
---|
69 | {
|
---|
70 | QVector<QRect> rects = region.rects();
|
---|
71 | for (int i = 0; i < rects.size(); i++)
|
---|
72 | painter->fillRect(rects.at(i), color);
|
---|
73 | }
|
---|
74 | //! [2]
|
---|
75 |
|
---|
76 | //! [3]
|
---|
77 | void DBScreen::blit(const QImage &image, const QPoint &topLeft, const QRegion ®ion)
|
---|
78 | {
|
---|
79 | QVector<QRect> rects = region.rects();
|
---|
80 | for (int i = 0; i < rects.size(); i++) {
|
---|
81 | QRect destRect = rects.at(i);
|
---|
82 | QRect srcRect(destRect.x()-topLeft.x(), destRect.y()-topLeft.y(), destRect.width(), destRect.height());
|
---|
83 | painter->drawImage(destRect.topLeft(), image, srcRect);
|
---|
84 | }
|
---|
85 | }
|
---|
86 | //! [3]
|
---|
87 |
|
---|
88 | //! [4]
|
---|
89 | void DBScreen::exposeRegion(QRegion region, int changing)
|
---|
90 | {
|
---|
91 | QLinuxFbScreen::exposeRegion(region, changing);
|
---|
92 | QLinuxFbScreen::blit(*image, QPoint(0, 0), region);
|
---|
93 | }
|
---|
94 | //! [4]
|
---|
95 |
|
---|