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/****************************************************************************
**
** Copyright (C) 2012 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 <QtTest/QtTest>
#include <QtGui/qgraphicslayout.h>
#include <QtGui/qgraphicslinearlayout.h>
#include <QtGui/qgraphicswidget.h>
#include <QtGui/qgraphicsview.h>
class tst_QGraphicsLayout : public QObject
{
Q_OBJECT
public:
tst_QGraphicsLayout() {}
~tst_QGraphicsLayout() {}
private slots:
void invalidate();
};
class RectWidget : public QGraphicsWidget
{
public:
RectWidget(QGraphicsItem *parent = 0, Qt::WindowFlags wFlags = 0) : QGraphicsWidget(parent, wFlags), setGeometryCalls(0) {}
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(option);
Q_UNUSED(widget);
painter->drawRoundRect(rect());
painter->drawLine(rect().topLeft(), rect().bottomRight());
painter->drawLine(rect().bottomLeft(), rect().topRight());
}
void setGeometry(const QRectF &rect)
{
//qDebug() << "setGeometry():" << this->data(0).toString();
setGeometryCalls->insert(this, rect);
QGraphicsWidget::setGeometry(rect);
}
void callUpdateGeometry() {
QGraphicsWidget::updateGeometry();
}
QMap<RectWidget*, QRectF> *setGeometryCalls;
};
/**
* Test to see how much time is needed to resize all widgets in a
* layout-widget-layout-widget-.... hierarchy from the point where a
* leaf widget changes its size hint. (updateGeometry() is called).
*
* If you run the test for 4.7 you'll get some really high numbers, but
* that's because they also include painting (and possible processing of
* some other events).
*/
void tst_QGraphicsLayout::invalidate()
{
QGraphicsLayout::setInstantInvalidatePropagation(true);
QGraphicsScene scene;
QGraphicsView *view = new QGraphicsView(&scene);
QMap<RectWidget*, QRectF> setGeometryCalls;
RectWidget *window = new RectWidget(0, Qt::Window);
window->setGeometryCalls = &setGeometryCalls;
window->setData(0, QString(QChar('a')));
scene.addItem(window);
RectWidget *leaf = 0;
const int depth = 100;
RectWidget *parent = window;
for (int i = 1; i < depth; ++i) {
QGraphicsLinearLayout *l = new QGraphicsLinearLayout(parent);
l->setContentsMargins(0,0,0,0);
RectWidget *child = new RectWidget;
child->setData(0, QString(QChar('a' + i)));
child->setGeometryCalls = &setGeometryCalls;
l->addItem(child);
parent = child;
}
leaf = parent;
leaf->setMinimumSize(QSizeF(1,1));
view->show();
QTest::qWaitForWindowShown(view);
// ...then measure...
int pass = 1;
// should be as small as possible, to reduce overhead of painting
QSizeF size(1, 1);
setGeometryCalls.clear();
QBENCHMARK {
leaf->setMinimumSize(size);
leaf->setMaximumSize(size);
while (setGeometryCalls.count() < depth) {
QApplication::sendPostedEvents();
}
// force a resize on each widget, this will ensure
// that each iteration will resize all 50 widgets
int w = int(size.width());
w^=2;
size.setWidth(w);
}
delete view;
QGraphicsLayout::setInstantInvalidatePropagation(false);
}
QTEST_MAIN(tst_QGraphicsLayout)
#include "tst_qgraphicslayout.moc"
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