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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module 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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QMATRIX_H
#define QMATRIX_H
#include <QtGui/qpolygon.h>
#include <QtGui/qregion.h>
#include <QtGui/qwindowdefs.h>
#include <QtCore/qline.h>
#include <QtCore/qpoint.h>
#include <QtCore/qrect.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Gui)
class QPainterPath;
class QVariant;
class Q_GUI_EXPORT QMatrix // 2D transform matrix
{
public:
inline explicit QMatrix(Qt::Initialization) {}
QMatrix();
QMatrix(qreal m11, qreal m12, qreal m21, qreal m22,
qreal dx, qreal dy);
QMatrix(const QMatrix &matrix);
void setMatrix(qreal m11, qreal m12, qreal m21, qreal m22,
qreal dx, qreal dy);
qreal m11() const { return _m11; }
qreal m12() const { return _m12; }
qreal m21() const { return _m21; }
qreal m22() const { return _m22; }
qreal dx() const { return _dx; }
qreal dy() const { return _dy; }
void map(int x, int y, int *tx, int *ty) const;
void map(qreal x, qreal y, qreal *tx, qreal *ty) const;
QRect mapRect(const QRect &) const;
QRectF mapRect(const QRectF &) const;
QPoint map(const QPoint &p) const;
QPointF map(const QPointF&p) const;
QLine map(const QLine &l) const;
QLineF map(const QLineF &l) const;
QPolygonF map(const QPolygonF &a) const;
QPolygon map(const QPolygon &a) const;
QRegion map(const QRegion &r) const;
QPainterPath map(const QPainterPath &p) const;
QPolygon mapToPolygon(const QRect &r) const;
void reset();
inline bool isIdentity() const;
QMatrix &translate(qreal dx, qreal dy);
QMatrix &scale(qreal sx, qreal sy);
QMatrix &shear(qreal sh, qreal sv);
QMatrix &rotate(qreal a);
bool isInvertible() const { return !qFuzzyIsNull(_m11*_m22 - _m12*_m21); }
qreal det() const { return _m11*_m22 - _m12*_m21; }
QMatrix inverted(bool *invertible = 0) const;
bool operator==(const QMatrix &) const;
bool operator!=(const QMatrix &) const;
QMatrix &operator*=(const QMatrix &);
QMatrix operator*(const QMatrix &o) const;
QMatrix &operator=(const QMatrix &);
operator QVariant() const;
#ifdef QT3_SUPPORT
inline QT3_SUPPORT QMatrix invert(bool *invertible=0) const { return inverted(invertible); }
inline QT3_SUPPORT QRect map(const QRect &r) const { return mapRect(r); }
QT3_SUPPORT QRegion mapToRegion(const QRect &r) const;
#endif
private:
inline QMatrix(bool)
: _m11(1.)
, _m12(0.)
, _m21(0.)
, _m22(1.)
, _dx(0.)
, _dy(0.) {}
inline QMatrix(qreal m11, qreal m12, qreal m21, qreal m22, qreal dx, qreal dy, bool)
: _m11(m11)
, _m12(m12)
, _m21(m21)
, _m22(m22)
, _dx(dx)
, _dy(dy) {}
friend class QTransform;
qreal _m11, _m12;
qreal _m21, _m22;
qreal _dx, _dy;
};
Q_DECLARE_TYPEINFO(QMatrix, Q_MOVABLE_TYPE);
// mathematical semantics
Q_GUI_EXPORT_INLINE QPoint operator*(const QPoint &p, const QMatrix &m)
{ return m.map(p); }
Q_GUI_EXPORT_INLINE QPointF operator*(const QPointF &p, const QMatrix &m)
{ return m.map(p); }
Q_GUI_EXPORT_INLINE QLineF operator*(const QLineF &l, const QMatrix &m)
{ return m.map(l); }
Q_GUI_EXPORT_INLINE QLine operator*(const QLine &l, const QMatrix &m)
{ return m.map(l); }
Q_GUI_EXPORT_INLINE QPolygon operator *(const QPolygon &a, const QMatrix &m)
{ return m.map(a); }
Q_GUI_EXPORT_INLINE QPolygonF operator *(const QPolygonF &a, const QMatrix &m)
{ return m.map(a); }
Q_GUI_EXPORT_INLINE QRegion operator *(const QRegion &r, const QMatrix &m)
{ return m.map(r); }
Q_GUI_EXPORT QPainterPath operator *(const QPainterPath &p, const QMatrix &m);
inline bool QMatrix::isIdentity() const
{
return qFuzzyIsNull(_m11 - 1) && qFuzzyIsNull(_m22 - 1) && qFuzzyIsNull(_m12)
&& qFuzzyIsNull(_m21) && qFuzzyIsNull(_dx) && qFuzzyIsNull(_dy);
}
inline bool qFuzzyCompare(const QMatrix& m1, const QMatrix& m2)
{
return qFuzzyCompare(m1.m11(), m2.m11())
&& qFuzzyCompare(m1.m12(), m2.m12())
&& qFuzzyCompare(m1.m21(), m2.m21())
&& qFuzzyCompare(m1.m22(), m2.m22())
&& qFuzzyCompare(m1.dx(), m2.dx())
&& qFuzzyCompare(m1.dy(), m2.dy());
}
/*****************************************************************************
QMatrix stream functions
*****************************************************************************/
#ifndef QT_NO_DATASTREAM
Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QMatrix &);
Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QMatrix &);
#endif
#ifndef QT_NO_DEBUG_STREAM
Q_GUI_EXPORT QDebug operator<<(QDebug, const QMatrix &);
#endif
#ifdef QT3_SUPPORT
QT_BEGIN_INCLUDE_NAMESPACE
#include <QtGui/qwmatrix.h>
QT_END_INCLUDE_NAMESPACE
#endif
QT_END_NAMESPACE
QT_END_HEADER
#endif // QMATRIX_H
|