summaryrefslogtreecommitdiffstats
path: root/tests/benchmarks/gui/graphicsview/qgraphicsview/benchapps/scrolltest/main.cpp
blob: 31cc362d019e900246b2f5de7faf09aac8020b6d (plain)
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
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: http://www.qt-project.org/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui>

#ifdef Q_WS_WIN
#define CALLGRIND_START_INSTRUMENTATION  {}
#define CALLGRIND_STOP_INSTRUMENTATION   {}
#else
#include "valgrind/callgrind.h"
#endif

class ItemMover : public QObject
{
    Q_OBJECT
public:
    ItemMover(QGraphicsItem *item)
        : _item(item)
    {
        startTimer(0);
    }

protected:
    void timerEvent(QTimerEvent *event)
    {
        _item->moveBy(-1, 0);
    }

private:
    QGraphicsItem *_item;
};

class ClipItem : public QGraphicsRectItem
{
public:
    ClipItem(qreal x, qreal y, qreal w, qreal h, const QPen &pen, const QBrush &brush)
        : QGraphicsRectItem(x, y, w, h)
    {
        setPen(pen);
        setBrush(brush);
    }

    QPainterPath shape() const
    {
        QPainterPath path;
        path.addRect(rect());
        return path;
    }
};

class CountView : public QGraphicsView
{
protected:
    void paintEvent(QPaintEvent *event)
    {
        static int n = 0;
        if (n)
            CALLGRIND_START_INSTRUMENTATION
        QGraphicsView::paintEvent(event);
        if (n)
            CALLGRIND_STOP_INSTRUMENTATION
        if (++n == 500)
            qApp->quit();
    }
};

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QGraphicsScene scene;
    scene.setItemIndexMethod(QGraphicsScene::NoIndex);

    ClipItem *clipItem = new ClipItem(0, 0, 100, 100, QPen(), QBrush(Qt::blue));
    clipItem->setFlag(QGraphicsItem::ItemClipsChildrenToShape);
    clipItem->setData(0, "clipItem");
    scene.addItem(clipItem);

    QGraphicsRectItem *scrollItem = scene.addRect(0, 0, 10, 10, QPen(Qt::NoPen), QBrush(Qt::NoBrush));
    scrollItem->setParentItem(clipItem);
    scrollItem->setFlag(QGraphicsItem::ItemIsMovable);
    scrollItem->setData(0, "scrollItem");

    for (int y = 0; y < 25; ++y) {
        for (int x = 0; x < 25; ++x) {
            ClipItem *rect = new ClipItem(0, 0, 90, 20, QPen(Qt::NoPen), QBrush(Qt::green));
            rect->setParentItem(scrollItem);
            rect->setPos(x * 95, y * 25);
            rect->setData(0, qPrintable(QString("rect %1 %2").arg(x).arg(y)));
            rect->setFlag(QGraphicsItem::ItemClipsChildrenToShape);

            QGraphicsEllipseItem *ellipse = new QGraphicsEllipseItem(-5, -5, 10, 10);
            ellipse->setPen(QPen(Qt::NoPen));
            ellipse->setBrush(QBrush(Qt::yellow));
            ellipse->setParentItem(rect);
            ellipse->setData(0, qPrintable(QString("ellipse %1 %2").arg(x).arg(y)));
        }
    }

    scrollItem->setRect(scrollItem->childrenBoundingRect());

#if 0
    ItemMover mover(scrollItem);
#endif

    CountView view;
    view.setScene(&scene);
    view.setSceneRect(-25, -25, 150, 150);
    view.resize(300, 300);
    view.show();

    return app.exec();
}

#include "main.moc"