1 /****************************************************************************
2 **
3 ** Copyright (C) 2015 The Qt Company Ltd.
4 ** Contact: http://www.qt.io/licensing/
5 **
6 ** This file is part of the test suite of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** Commercial License Usage
10 ** Licensees holding valid commercial Qt licenses may use this file in
11 ** accordance with the commercial license agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and The Qt Company. For licensing terms
14 ** and conditions see http://www.qt.io/terms-conditions. For further
15 ** information use the contact form at http://www.qt.io/contact-us.
16 **
17 ** GNU Lesser General Public License Usage
18 ** Alternatively, this file may be used under the terms of the GNU Lesser
19 ** General Public License version 2.1 or version 3 as published by the Free
20 ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
21 ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
22 ** following information to ensure the GNU Lesser General Public License
23 ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
24 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
25 **
26 ** As a special exception, The Qt Company gives you certain additional
27 ** rights. These rights are described in The Qt Company LGPL Exception
28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
29 **
30 ** GNU General Public License Usage
31 ** Alternatively, this file may be used under the terms of the GNU
32 ** General Public License version 3.0 as published by the Free Software
33 ** Foundation and appearing in the file LICENSE.GPL included in the
34 ** packaging of this file. Please review the following information to
35 ** ensure the GNU General Public License version 3.0 requirements will be
36 ** met: http://www.gnu.org/copyleft/gpl.html.
37 **
38 ** $QT_END_LICENSE$
39 **
40 ****************************************************************************/
41
42 #include "chiptester.h"
43 #include "chip.h"
44
45 #include <QtGui>
46 #ifndef QT_NO_OPENGL
47 #include <QtOpenGL>
48 #endif
49
ChipTester(QWidget * parent)50 ChipTester::ChipTester(QWidget *parent)
51 : QGraphicsView(parent),
52 npaints(0)
53 {
54 resize(400, 300);
55 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
56 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
57 setFrameStyle(0);
58 setTransformationAnchor(NoAnchor);
59
60 populateScene();
61 setScene(scene);
62
63 setWindowTitle(tr("Chip Demo"));
64 }
65
setAntialias(bool enabled)66 void ChipTester::setAntialias(bool enabled)
67 {
68 setRenderHint(QPainter::Antialiasing, enabled);
69 }
70
setOpenGL(bool enabled)71 void ChipTester::setOpenGL(bool enabled)
72 {
73 #ifndef QT_NO_OPENGL
74 setViewport(enabled ? new QGLWidget(QGLFormat(QGL::SampleBuffers)) : 0);
75 #endif
76 }
77
setOperation(Operation operation)78 void ChipTester::setOperation(Operation operation)
79 {
80 this->operation = operation;
81 }
82
runBenchmark()83 void ChipTester::runBenchmark()
84 {
85 npaints = 0;
86 timerId = startTimer(0);
87 stopWatch.start();
88 eventLoop.exec();
89 killTimer(timerId);
90 }
91
paintEvent(QPaintEvent * event)92 void ChipTester::paintEvent(QPaintEvent *event)
93 {
94 QGraphicsView::paintEvent(event);
95 if (++npaints == 50)
96 eventLoop.quit();
97 }
98
timerEvent(QTimerEvent *)99 void ChipTester::timerEvent(QTimerEvent *)
100 {
101 switch (operation) {
102 case Rotate360:
103 rotate(1);
104 break;
105 case ZoomInOut: {
106 qreal s = 0.05 + (npaints / 20.0);
107 setTransform(QTransform().scale(s, s));
108 break;
109 }
110 case Translate: {
111 int offset = horizontalScrollBar()->minimum()
112 + (npaints % (horizontalScrollBar()->maximum() - horizontalScrollBar()->minimum()));
113 horizontalScrollBar()->setValue(offset);
114 break;
115 }
116 }
117 }
118
populateScene()119 void ChipTester::populateScene()
120 {
121 scene = new QGraphicsScene;
122
123 QImage image(":/qt4logo.png");
124
125 // Populate scene
126 int xx = 0;
127 int nitems = 0;
128 for (int i = -1100; i < 1100; i += 110) {
129 ++xx;
130 int yy = 0;
131 for (int j = -700; j < 700; j += 70) {
132 ++yy;
133 qreal x = (i + 1100) / 2200.0;
134 qreal y = (j + 700) / 1400.0;
135
136 QColor color(image.pixel(int(image.width() * x), int(image.height() * y)));
137 QGraphicsItem *item = new Chip(color, xx, yy);
138 item->setPos(QPointF(i, j));
139 scene->addItem(item);
140
141 ++nitems;
142 }
143 }
144 }
145