d0ba43f0f5
Change-Id: I7737469d3016f9522e497b443edd864fa4d714cc Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
142 lines
4.6 KiB
C++
142 lines
4.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the test suite of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 as published by the Free Software
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.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 <QTest>
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#include <QGraphicsLayout>
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#include <QGraphicsLinearLayout>
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#include <QGraphicsWidget>
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#include <QGraphicsView>
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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 = nullptr, Qt::WindowFlags wFlags = { }) : QGraphicsWidget(parent, wFlags), setGeometryCalls(0) {}
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override
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{
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Q_UNUSED(option);
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Q_UNUSED(widget);
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painter->drawRoundedRect(rect(), 25, 25, Qt::RelativeSize);
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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) override
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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 = new QGraphicsScene;
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QGraphicsView *view = new QGraphicsView(scene);
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QMap<RectWidget*, QRectF> *setGeometryCalls = new QMap<RectWidget*, QRectF>;
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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(QChar('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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QVERIFY(QTest::qWaitForWindowExposed(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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window->setGeometryCalls = nullptr;
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delete view;
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delete scene;
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QGraphicsLayout::setInstantInvalidatePropagation(false);
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delete setGeometryCalls;
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}
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QTEST_MAIN(tst_QGraphicsLayout)
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#include "tst_qgraphicslayout.moc"
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