source: trunk/src/gui/painting/qpaintengineex.cpp@ 301

Last change on this file since 301 was 2, checked in by Dmitry A. Kuminov, 17 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 27.9 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information ([email protected])
5**
6** This file is part of the QtGui module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial Usage
10** Licensees holding valid Qt Commercial licenses may use this file in
11** accordance with the Qt Commercial License Agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and Nokia.
14**
15** GNU Lesser General Public License Usage
16** Alternatively, this file may be used under the terms of the GNU Lesser
17** General Public License version 2.1 as published by the Free Software
18** Foundation and appearing in the file LICENSE.LGPL included in the
19** packaging of this file. Please review the following information to
20** ensure the GNU Lesser General Public License version 2.1 requirements
21** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
22**
23** In addition, as a special exception, Nokia gives you certain
24** additional rights. These rights are described in the Nokia Qt LGPL
25** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
26** package.
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**
36** If you are unsure which license is appropriate for your use, please
37** contact the sales department at [email protected].
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include "qpaintengineex_p.h"
43#include "qpainter_p.h"
44#include "qstroker_p.h"
45#include <private/qpainterpath_p.h>
46
47#include <qvarlengtharray.h>
48#include <qdebug.h>
49
50
51QT_BEGIN_NAMESPACE
52
53/*******************************************************************************
54 *
55 * class QVectorPath
56 *
57 */
58
59const QRealRect &QVectorPath::controlPointRect() const
60{
61 if (m_hints & ControlPointRect)
62 return m_cp_rect;
63
64 if (m_count == 0) {
65 m_cp_rect.x1 = m_cp_rect.x2 = m_cp_rect.y1 = m_cp_rect.y2 = 0;
66 m_hints |= ControlPointRect;
67 return m_cp_rect;
68 }
69 Q_ASSERT(m_points && m_count > 0);
70
71 const qreal *pts = m_points;
72 m_cp_rect.x1 = m_cp_rect.x2 = *pts;
73 ++pts;
74 m_cp_rect.y1 = m_cp_rect.y2 = *pts;
75 ++pts;
76
77 const qreal *epts = m_points + (m_count << 1);
78 while (pts < epts) {
79 qreal x = *pts;
80 if (x < m_cp_rect.x1) m_cp_rect.x1 = x;
81 else if (x > m_cp_rect.x2) m_cp_rect.x2 = x;
82 ++pts;
83
84 qreal y = *pts;
85 if (y < m_cp_rect.y1) m_cp_rect.y1 = y;
86 else if (y > m_cp_rect.y2) m_cp_rect.y2 = y;
87 ++pts;
88 }
89
90 m_hints |= ControlPointRect;
91 return m_cp_rect;
92}
93
94const QVectorPath &qtVectorPathForPath(const QPainterPath &path)
95{
96 Q_ASSERT(path.d_func());
97 return path.d_func()->vectorPath();
98}
99
100#ifndef QT_NO_DEBUG_STREAM
101QDebug Q_GUI_EXPORT &operator<<(QDebug &s, const QVectorPath &path)
102{
103 QRealRect vectorPathBounds = path.controlPointRect();
104 QRectF rf(vectorPathBounds.x1, vectorPathBounds.y1,
105 vectorPathBounds.x2 - vectorPathBounds.x1, vectorPathBounds.y2 - vectorPathBounds.y1);
106 s << "QVectorPath(size:" << path.elementCount()
107 << " hints:" << hex << path.hints()
108 << rf << ")";
109 return s;
110}
111#endif
112
113/*******************************************************************************
114 *
115 * class QPaintEngineExPrivate:
116 *
117 */
118
119
120struct StrokeHandler {
121 QDataBuffer<qreal> pts;
122 QDataBuffer<QPainterPath::ElementType> types;
123};
124
125
126QPaintEngineExPrivate::QPaintEngineExPrivate()
127 : dasher(&stroker),
128 strokeHandler(0),
129 activeStroker(0),
130 strokerPen(Qt::NoPen)
131{
132}
133
134
135QPaintEngineExPrivate::~QPaintEngineExPrivate()
136{
137 delete strokeHandler;
138}
139
140
141
142/*******************************************************************************
143 *
144 * class QPaintEngineEx:
145 *
146 */
147
148static QPainterPath::ElementType qpaintengineex_ellipse_types[] = {
149 QPainterPath::MoveToElement,
150 QPainterPath::CurveToElement,
151 QPainterPath::CurveToDataElement,
152 QPainterPath::CurveToDataElement,
153
154 QPainterPath::CurveToElement,
155 QPainterPath::CurveToDataElement,
156 QPainterPath::CurveToDataElement,
157
158 QPainterPath::CurveToElement,
159 QPainterPath::CurveToDataElement,
160 QPainterPath::CurveToDataElement,
161
162 QPainterPath::CurveToElement,
163 QPainterPath::CurveToDataElement,
164 QPainterPath::CurveToDataElement
165};
166
167static QPainterPath::ElementType qpaintengineex_line_types_16[] = {
168 QPainterPath::MoveToElement, QPainterPath::LineToElement,
169 QPainterPath::MoveToElement, QPainterPath::LineToElement,
170 QPainterPath::MoveToElement, QPainterPath::LineToElement,
171 QPainterPath::MoveToElement, QPainterPath::LineToElement,
172 QPainterPath::MoveToElement, QPainterPath::LineToElement,
173 QPainterPath::MoveToElement, QPainterPath::LineToElement,
174 QPainterPath::MoveToElement, QPainterPath::LineToElement,
175 QPainterPath::MoveToElement, QPainterPath::LineToElement,
176 QPainterPath::MoveToElement, QPainterPath::LineToElement,
177 QPainterPath::MoveToElement, QPainterPath::LineToElement,
178 QPainterPath::MoveToElement, QPainterPath::LineToElement,
179 QPainterPath::MoveToElement, QPainterPath::LineToElement,
180 QPainterPath::MoveToElement, QPainterPath::LineToElement,
181 QPainterPath::MoveToElement, QPainterPath::LineToElement,
182 QPainterPath::MoveToElement, QPainterPath::LineToElement,
183 QPainterPath::MoveToElement, QPainterPath::LineToElement
184};
185
186static QPainterPath::ElementType qpaintengineex_rect4_types_32[] = {
187 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 1
188 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 2
189 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 3
190 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 4
191 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 5
192 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 6
193 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 7
194 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 8
195 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 9
196 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 10
197 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 11
198 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 12
199 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 13
200 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 14
201 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 15
202 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 16
203 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 17
204 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 18
205 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 19
206 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 20
207 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 21
208 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 22
209 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 23
210 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 24
211 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 25
212 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 26
213 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 27
214 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 28
215 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 29
216 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 30
217 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 31
218 QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 32
219};
220
221static void qpaintengineex_moveTo(qreal x, qreal y, void *data) {
222 ((StrokeHandler *) data)->pts.add(x);
223 ((StrokeHandler *) data)->pts.add(y);
224 ((StrokeHandler *) data)->types.add(QPainterPath::MoveToElement);
225}
226
227static void qpaintengineex_lineTo(qreal x, qreal y, void *data) {
228 ((StrokeHandler *) data)->pts.add(x);
229 ((StrokeHandler *) data)->pts.add(y);
230 ((StrokeHandler *) data)->types.add(QPainterPath::LineToElement);
231}
232
233static void qpaintengineex_cubicTo(qreal c1x, qreal c1y, qreal c2x, qreal c2y, qreal ex, qreal ey, void *data) {
234 ((StrokeHandler *) data)->pts.add(c1x);
235 ((StrokeHandler *) data)->pts.add(c1y);
236 ((StrokeHandler *) data)->types.add(QPainterPath::CurveToElement);
237
238 ((StrokeHandler *) data)->pts.add(c2x);
239 ((StrokeHandler *) data)->pts.add(c2y);
240 ((StrokeHandler *) data)->types.add(QPainterPath::CurveToDataElement);
241
242 ((StrokeHandler *) data)->pts.add(ex);
243 ((StrokeHandler *) data)->pts.add(ey);
244 ((StrokeHandler *) data)->types.add(QPainterPath::CurveToDataElement);
245}
246
247QPaintEngineEx::QPaintEngineEx(QPaintEngineExPrivate &data)
248 : QPaintEngine(data, AllFeatures)
249{
250 extended = true;
251}
252
253
254QPainterState *QPaintEngineEx::createState(QPainterState *orig) const
255{
256 if (!orig)
257 return new QPainterState;
258 return new QPainterState(orig);
259}
260
261extern bool qt_scaleForTransform(const QTransform &transform, qreal *scale); // qtransform.cpp
262
263void QPaintEngineEx::stroke(const QVectorPath &path, const QPen &pen)
264{
265#ifdef QT_DEBUG_DRAW
266 qDebug() << "QPaintEngineEx::stroke()" << pen;
267#endif
268