source: trunk/examples/widgets/scribble/scribblearea.h@ 1023

Last change on this file since 1023 was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.
File size: 3.1 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
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#ifndef SCRIBBLEAREA_H
42#define SCRIBBLEAREA_H
43
44#include <QColor>
45#include <QImage>
46#include <QPoint>
47#include <QWidget>
48
49//! [0]
50class ScribbleArea : public QWidget
51{
52 Q_OBJECT
53
54public:
55 ScribbleArea(QWidget *parent = 0);
56
57 bool openImage(const QString &fileName);
58 bool saveImage(const QString &fileName, const char *fileFormat);
59 void setPenColor(const QColor &newColor);
60 void setPenWidth(int newWidth);
61
62 bool isModified() const { return modified; }
63 QColor penColor() const { return myPenColor; }
64 int penWidth() const { return myPenWidth; }
65
66public slots:
67 void clearImage();
68 void print();
69
70protected:
71 void mousePressEvent(QMouseEvent *event);
72 void mouseMoveEvent(QMouseEvent *event);
73 void mouseReleaseEvent(QMouseEvent *event);
74 void paintEvent(QPaintEvent *event);
75 void resizeEvent(QResizeEvent *event);
76
77private:
78 void drawLineTo(const QPoint &endPoint);
79 void resizeImage(QImage *image, const QSize &newSize);
80
81 bool modified;
82 bool scribbling;
83 int myPenWidth;
84 QColor myPenColor;
85 QImage image;
86 QPoint lastPoint;
87};
88//! [0]
89
90#endif
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