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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef DOCUMENT_H
#define DOCUMENT_H
#include <QWidget>
QT_FORWARD_DECLARE_CLASS(QUndoStack)
QT_FORWARD_DECLARE_CLASS(QTextStream)
class Shape
{
public:
enum Type { Rectangle, Circle, Triangle };
explicit Shape(Type type = Rectangle, const QColor &color = Qt::red, const QRect &rect = QRect());
Type type() const;
QString name() const;
QRect rect() const;
QRect resizeHandle() const;
QColor color() const;
static QString typeToString(Type type);
static Type stringToType(const QString &s, bool *ok = 0);
static const QSize minSize;
private:
Type m_type;
QRect m_rect;
QColor m_color;
QString m_name;
friend class Document;
};
class Document : public QWidget
{
Q_OBJECT
public:
Document(QWidget *parent = 0);
QString addShape(const Shape &shape);
void deleteShape(const QString &shapeName);
Shape shape(const QString &shapeName) const;
QString currentShapeName() const;
void setShapeRect(const QString &shapeName, const QRect &rect);
void setShapeColor(const QString &shapeName, const QColor &color);
bool load(QTextStream &stream);
void save(QTextStream &stream);
QString fileName() const;
void setFileName(const QString &fileName);
QUndoStack *undoStack() const;
signals:
void currentShapeChanged(const QString &shapeName);
protected:
void paintEvent(QPaintEvent *event);
void mousePressEvent(QMouseEvent *event);
void mouseReleaseEvent(QMouseEvent *event);
void mouseMoveEvent(QMouseEvent *event);
private:
void setCurrentShape(int index);
int indexOf(const QString &shapeName) const;
int indexAt(const QPoint &pos) const;
QString uniqueName(const QString &name) const;
QList<Shape> m_shapeList;
int m_currentIndex;
int m_mousePressIndex;
QPoint m_mousePressOffset;
bool m_resizeHandlePressed;
QString m_fileName;
QUndoStack *m_undoStack;
};
#endif // DOCUMENT_H
|
