source: trunk/doc/src/snippets/picture/picture.cpp@ 561

Last change on this file since 561 was 561, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.6.1 sources.

File size: 4.2 KB
RevLine 
[2]1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
[561]4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
[2]6**
7** This file is part of the documentation of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
[561]24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
[2]27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
[561]36** If you have questions regarding the use of this file, please contact
37** Nokia at [email protected].
[2]38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include <QtGui>
43
44void myProcessing(const QString &)
45{
46}
47
48int main()
49{
50 QWidget myWidget;
51 {
52 // RECORD
53//! [0]
54 QPicture picture;
55 QPainter painter;
56 painter.begin(&picture); // paint in picture
57 painter.drawEllipse(10,20, 80,70); // draw an ellipse
58 painter.end(); // painting done
59 picture.save("drawing.pic"); // save picture
60//! [0]
61 }
62
63 {
64 // REPLAY
65//! [1]
66 QPicture picture;
67 picture.load("drawing.pic"); // load picture
68 QPainter painter;
[561]69 painter.begin(&myImage); // paint in myImage
[2]70 painter.drawPicture(0, 0, picture); // draw the picture at (0,0)
71 painter.end(); // painting done
72//! [1]
73 }
74
75 QPicture myPicture;
76 {
77 // FORMATS
78//! [2]
79 QStringList list = QPicture::inputFormatList();
80 foreach (QString string, list)
81 myProcessing(string);
82//! [2]
83 }
84
85 {
86 // OUTPUT
87//! [3]
88 QStringList list = QPicture::outputFormatList();
89 foreach (QString string, list)
90 myProcessing(string);
91//! [3]
92 }
93
94 {
95 // PIC READ
96//! [4]
97 QPictureIO iio;
98 QPixmap pixmap;
99 iio.setFileName("vegeburger.pic");
100 if (iio.read()) { // OK
101 QPicture picture = iio.picture();
102 QPainter painter(&pixmap);
103 painter.drawPicture(0, 0, picture);
104 }
105//! [4]
106 }
107
108 {
109 QPixmap pixmap;
110 // PIC WRITE
111//! [5]
112 QPictureIO iio;
113 QPicture picture;
114 QPainter painter(&picture);
115 painter.drawPixmap(0, 0, pixmap);
116 iio.setPicture(picture);
117 iio.setFileName("vegeburger.pic");
118 iio.setFormat("PIC");
119 if (iio.write())
120 return true; // returned true if written successfully
121//! [5]
122 }
123
124}
125
126// SVG READ
127//! [6]
128void readSVG(QPictureIO *picture)
129{
130 // read the picture using the picture->ioDevice()
131}
132//! [6]
133
134// SVG WRITE
135//! [7]
136void writeSVG(QPictureIO *picture)
137{
138 // write the picture using the picture->ioDevice()
139}
140//! [7]
141
142// USE SVG
143void foo() {
144
145//! [8]
146 // add the SVG picture handler
147 // ...
148//! [8]
149 QPictureIO::defineIOHandler("SVG", 0, 0, readSVG, writeSVG);
150 // ...
151
152}
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