153 lines
4.2 KiB
C++
153 lines
4.2 KiB
C++
|
/****************************************************************************
|
||
|
**
|
||
|
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
|
||
|
** All rights reserved.
|
||
|
** Contact: Nokia Corporation (qt-info@nokia.com)
|
||
|
**
|
||
|
** This file is part of the test suite 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.
|
||
|
**
|
||
|
**
|
||
|
**
|
||
|
**
|
||
|
**
|
||
|
**
|
||
|
**
|
||
|
**
|
||
|
** $QT_END_LICENSE$
|
||
|
**
|
||
|
****************************************************************************/
|
||
|
#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"
|