source: trunk/examples/painting/painterpaths/window.cpp@ 5

Last change on this file since 5 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 9.0 KB
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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 examples 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
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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
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36** If you are unsure which license is appropriate for your use, please
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38** $QT_END_LICENSE$
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40****************************************************************************/
41
42#include <QtGui>
43
44#include <math.h>
45
46#include "renderarea.h"
47#include "window.h"
48
49//! [0]
50const float Pi = 3.14159f;
51//! [0]
52
53//! [1]
54Window::Window()
55{
56 QPainterPath rectPath;
57 rectPath.moveTo(20.0, 30.0);
58 rectPath.lineTo(80.0, 30.0);
59 rectPath.lineTo(80.0, 70.0);
60 rectPath.lineTo(20.0, 70.0);
61 rectPath.closeSubpath();
62//! [1]
63
64//! [2]
65 QPainterPath roundRectPath;
66 roundRectPath.moveTo(80.0, 35.0);
67 roundRectPath.arcTo(70.0, 30.0, 10.0, 10.0, 0.0, 90.0);
68 roundRectPath.lineTo(25.0, 30.0);
69 roundRectPath.arcTo(20.0, 30.0, 10.0, 10.0, 90.0, 90.0);
70 roundRectPath.lineTo(20.0, 65.0);
71 roundRectPath.arcTo(20.0, 60.0, 10.0, 10.0, 180.0, 90.0);
72 roundRectPath.lineTo(75.0, 70.0);
73 roundRectPath.arcTo(70.0, 60.0, 10.0, 10.0, 270.0, 90.0);
74 roundRectPath.closeSubpath();
75//! [2]
76
77//! [3]
78 QPainterPath ellipsePath;
79 ellipsePath.moveTo(80.0, 50.0);
80 ellipsePath.arcTo(20.0, 30.0, 60.0, 40.0, 0.0, 360.0);
81//! [3]
82
83//! [4]
84 QPainterPath piePath;
85 piePath.moveTo(50.0, 50.0);
86 piePath.arcTo(20.0, 30.0, 60.0, 40.0, 60.0, 240.0);
87 piePath.closeSubpath();
88//! [4]
89
90//! [5]
91 QPainterPath polygonPath;
92 polygonPath.moveTo(10.0, 80.0);
93 polygonPath.lineTo(20.0, 10.0);
94 polygonPath.lineTo(80.0, 30.0);
95 polygonPath.lineTo(90.0, 70.0);
96 polygonPath.closeSubpath();
97//! [5]
98
99//! [6]
100 QPainterPath groupPath;
101 groupPath.moveTo(60.0, 40.0);
102 groupPath.arcTo(20.0, 20.0, 40.0, 40.0, 0.0, 360.0);
103 groupPath.moveTo(40.0, 40.0);
104 groupPath.lineTo(40.0, 80.0);
105 groupPath.lineTo(80.0, 80.0);
106 groupPath.lineTo(80.0, 40.0);
107 groupPath.closeSubpath();
108//! [6]
109
110//! [7]
111 QPainterPath textPath;
112 QFont timesFont("Times", 50);
113 timesFont.setStyleStrategy(QFont::ForceOutline);
114 textPath.addText(10, 70, timesFont, tr("Qt"));
115//! [7]
116
117//! [8]
118 QPainterPath bezierPath;
119 bezierPath.moveTo(20, 30);
120 bezierPath.cubicTo(80, 0, 50, 50, 80, 80);
121//! [8]
122
123//! [9]
124 QPainterPath starPath;
125 starPath.moveTo(90, 50);
126 for (int i = 1; i < 5; ++i) {
127 starPath.lineTo(50 + 40 * cos(0.8 * i * Pi),
128 50 + 40 * sin(0.8 * i * Pi));
129 }
130 starPath.closeSubpath();
131//! [9]
132
133//! [10]
134 renderAreas[0] = new RenderArea(rectPath);
135 renderAreas[1] = new RenderArea(roundRectPath);
136 renderAreas[2] = new RenderArea(ellipsePath);
137 renderAreas[3] = new RenderArea(piePath);
138 renderAreas[4] = new RenderArea(polygonPath);
139 renderAreas[5] = new RenderArea(groupPath);
140 renderAreas[6] = new RenderArea(textPath);
141 renderAreas[7] = new RenderArea(bezierPath);
142 renderAreas[8] = new RenderArea(starPath);
143 Q_ASSERT(NumRenderAreas == 9);
144//! [10]
145
146//! [11]
147 fillRuleComboBox = new QComboBox;
148 fillRuleComboBox->addItem(tr("Odd Even"), Qt::OddEvenFill);
149 fillRuleComboBox->addItem(tr("Winding"), Qt::WindingFill);
150
151 fillRuleLabel = new QLabel(tr("Fill &Rule:"));
152 fillRuleLabel->setBuddy(fillRuleComboBox);
153//! [11]
154
155//! [12]
156 fillColor1ComboBox = new QComboBox;
157 populateWithColors(fillColor1ComboBox);
158 fillColor1ComboBox->setCurrentIndex(
159 fillColor1ComboBox->findText("mediumslateblue"));
160
161 fillColor2ComboBox = new QComboBox;
162 populateWithColors(fillColor2ComboBox);
163 fillColor2ComboBox->setCurrentIndex(
164 fillColor2ComboBox->findText("cornsilk"));
165
166 fillGradientLabel = new QLabel(tr("&Fill Gradient:"));
167 fillGradientLabel->setBuddy(fillColor1ComboBox);
168
169 fillToLabel = new QLabel(tr("to"));
170 fillToLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
171
172 penWidthSpinBox = new QSpinBox;
173 penWidthSpinBox->setRange(0, 20);
174
175 penWidthLabel = new QLabel(tr("&Pen Width:"));
176 penWidthLabel->setBuddy(penWidthSpinBox);
177
178 penColorComboBox = new QComboBox;
179 populateWithColors(penColorComboBox);
180 penColorComboBox->setCurrentIndex(
181 penColorComboBox->findText("darkslateblue"));
182
183 penColorLabel = new QLabel(tr("Pen &Color:"));
184 penColorLabel->setBuddy(penColorComboBox);
185
186 rotationAngleSpinBox = new QSpinBox;
187 rotationAngleSpinBox->setRange(0, 359);
188 rotationAngleSpinBox->setWrapping(true);
189 rotationAngleSpinBox->setSuffix("\xB0");
190
191 rotationAngleLabel = new QLabel(tr("&Rotation Angle:"));
192 rotationAngleLabel->setBuddy(rotationAngleSpinBox);
193//! [12]
194
195//! [16]
196 connect(fillRuleComboBox, SIGNAL(activated(int)),
197 this, SLOT(fillRuleChanged()));
198 connect(fillColor1ComboBox, SIGNAL(activated(int)),
199 this, SLOT(fillGradientChanged()));
200 connect(fillColor2ComboBox, SIGNAL(activated(int)),
201 this, SLOT(fillGradientChanged()));
202 connect(penColorComboBox, SIGNAL(activated(int)),
203 this, SLOT(penColorChanged()));
204
205 for (int i = 0; i < NumRenderAreas; ++i) {
206 connect(penWidthSpinBox, SIGNAL(valueChanged(int)),
207 renderAreas[i], SLOT(setPenWidth(int)));
208 connect(rotationAngleSpinBox, SIGNAL(valueChanged(int)),
209 renderAreas[i], SLOT(setRotationAngle(int)));
210 }
211
212//! [16] //! [17]
213 QGridLayout *topLayout = new QGridLayout;
214 for (int i = 0; i < NumRenderAreas; ++i)
215 topLayout->addWidget(renderAreas[i], i / 3, i % 3);
216
217 QGridLayout *mainLayout = new QGridLayout;
218 mainLayout->addLayout(topLayout, 0, 0, 1, 4);
219 mainLayout->addWidget(fillRuleLabel, 1, 0);
220 mainLayout->addWidget(fillRuleComboBox, 1, 1, 1, 3);
221 mainLayout->addWidget(fillGradientLabel, 2, 0);
222 mainLayout->addWidget(fillColor1ComboBox, 2, 1);
223 mainLayout->addWidget(fillToLabel, 2, 2);
224 mainLayout->addWidget(fillColor2ComboBox, 2, 3);
225 mainLayout->addWidget(penWidthLabel, 3, 0);
226 mainLayout->addWidget(penWidthSpinBox, 3, 1, 1, 3);
227 mainLayout->addWidget(penColorLabel, 4, 0);
228 mainLayout->addWidget(penColorComboBox, 4, 1, 1, 3);
229 mainLayout->addWidget(rotationAngleLabel, 5, 0);
230 mainLayout->addWidget(rotationAngleSpinBox, 5, 1, 1, 3);
231 setLayout(mainLayout);
232//! [17]
233
234//! [18]
235 fillRuleChanged();
236 fillGradientChanged();
237 penColorChanged();
238 penWidthSpinBox->setValue(2);
239
240 setWindowTitle(tr("Painter Paths"));
241}
242//! [18]
243
244//! [19]
245void Window::fillRuleChanged()
246{
247 Qt::FillRule rule = (Qt::FillRule)currentItemData(fillRuleComboBox).toInt();
248
249 for (int i = 0; i < NumRenderAreas; ++i)
250 renderAreas[i]->setFillRule(rule);
251}
252//! [19]
253
254//! [20]
255void Window::fillGradientChanged()
256{
257 QColor color1 = qvariant_cast<QColor>(currentItemData(fillColor1ComboBox));
258 QColor color2 = qvariant_cast<QColor>(currentItemData(fillColor2ComboBox));
259
260 for (int i = 0; i < NumRenderAreas; ++i)
261 renderAreas[i]->setFillGradient(color1, color2);
262}
263//! [20]
264
265//! [21]
266void Window::penColorChanged()
267{
268 QColor color = qvariant_cast<QColor>(currentItemData(penColorComboBox));
269
270 for (int i = 0; i < NumRenderAreas; ++i)
271 renderAreas[i]->setPenColor(color);
272}
273//! [21]
274
275//! [22]
276void Window::populateWithColors(QComboBox *comboBox)
277{
278 QStringList colorNames = QColor::colorNames();
279 foreach (QString name, colorNames)
280 comboBox->addItem(name, QColor(name));
281}
282//! [22]
283
284//! [23]
285QVariant Window::currentItemData(QComboBox *comboBox)
286{
287 return comboBox->itemData(comboBox->currentIndex());
288}
289//! [23]
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