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131 lines
4 KiB
C++
131 lines
4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Copyright (C) 2016 Ivailo Monev
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**
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** This file is part of the test suite of the Katie Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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**
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtTest/QtTest>
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#include <QtGui/qgraphicslayout.h>
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#include <QtGui/qgraphicslinearlayout.h>
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#include <QtGui/qgraphicswidget.h>
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#include <QtGui/qgraphicsview.h>
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class tst_QGraphicsLayout : public QObject
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{
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Q_OBJECT
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public:
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tst_QGraphicsLayout() {}
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~tst_QGraphicsLayout() {}
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private slots:
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void invalidate();
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};
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class RectWidget : public QGraphicsWidget
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{
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public:
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RectWidget(QGraphicsItem *parent = 0, Qt::WindowFlags wFlags = 0) : QGraphicsWidget(parent, wFlags), setGeometryCalls(0) {}
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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Q_UNUSED(option);
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Q_UNUSED(widget);
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painter->drawRoundRect(rect());
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painter->drawLine(rect().topLeft(), rect().bottomRight());
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painter->drawLine(rect().bottomLeft(), rect().topRight());
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}
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void setGeometry(const QRectF &rect)
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{
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//qDebug() << "setGeometry():" << this->data(0).toString();
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setGeometryCalls->insert(this, rect);
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QGraphicsWidget::setGeometry(rect);
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}
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void callUpdateGeometry() {
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QGraphicsWidget::updateGeometry();
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}
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QMap<RectWidget*, QRectF> *setGeometryCalls;
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};
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/**
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* Test to see how much time is needed to resize all widgets in a
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* layout-widget-layout-widget-.... hierarchy from the point where a
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* leaf widget changes its size hint. (updateGeometry() is called).
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*
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* If you run the test for 4.7 you'll get some really high numbers, but
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* that's because they also include painting (and possible processing of
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* some other events).
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*/
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void tst_QGraphicsLayout::invalidate()
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{
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QGraphicsLayout::setInstantInvalidatePropagation(true);
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QGraphicsScene scene;
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QGraphicsView *view = new QGraphicsView(&scene);
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QMap<RectWidget*, QRectF> setGeometryCalls;
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RectWidget *window = new RectWidget(0, Qt::Window);
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window->setGeometryCalls = &setGeometryCalls;
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window->setData(0, QString(QLatin1Char('a')));
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scene.addItem(window);
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RectWidget *leaf = 0;
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const int depth = 100;
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RectWidget *parent = window;
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for (int i = 1; i < depth; ++i) {
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QGraphicsLinearLayout *l = new QGraphicsLinearLayout(parent);
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l->setContentsMargins(0,0,0,0);
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RectWidget *child = new RectWidget;
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child->setData(0, QString(QChar('a' + i)));
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child->setGeometryCalls = &setGeometryCalls;
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l->addItem(child);
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parent = child;
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}
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leaf = parent;
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leaf->setMinimumSize(QSizeF(1,1));
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view->show();
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QTest::qWaitForWindowShown(view);
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// ...then measure...
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// should be as small as possible, to reduce overhead of painting
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QSizeF size(1, 1);
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setGeometryCalls.clear();
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QBENCHMARK {
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leaf->setMinimumSize(size);
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leaf->setMaximumSize(size);
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while (setGeometryCalls.count() < depth) {
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QApplication::sendPostedEvents();
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}
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// force a resize on each widget, this will ensure
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// that each iteration will resize all 50 widgets
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int w = int(size.width());
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w^=2;
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size.setWidth(w);
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}
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delete view;
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QGraphicsLayout::setInstantInvalidatePropagation(false);
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}
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QTEST_MAIN(tst_QGraphicsLayout)
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#include "moc_tst_qgraphicslayout.cpp"
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