/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the test suite of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:GPL-EXCEPT$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3 as published by the Free Software ** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT ** included in the packaging of this file. Please review the following ** information to ensure the GNU General Public License requirements will ** be met: https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include #include #include #include class tst_QGraphicsLinearLayout : public QObject { Q_OBJECT public: tst_QGraphicsLinearLayout() {} ~tst_QGraphicsLinearLayout() {} private slots: void heightForWidth_data(); void heightForWidth(); }; struct MySquareWidget : public QGraphicsWidget { MySquareWidget() {} virtual QSizeF sizeHint ( Qt::SizeHint which, const QSizeF & constraint = QSizeF() ) const { if (which != Qt::PreferredSize) return QGraphicsWidget::sizeHint(which, constraint); if (constraint.width() < 0) return QGraphicsWidget::sizeHint(which, constraint); return QSizeF(constraint.width(), constraint.width()); } }; void tst_QGraphicsLinearLayout::heightForWidth_data() { QTest::addColumn("hfw"); QTest::addColumn("nested"); QTest::newRow("hfw") << true << false; QTest::newRow("hfw, nested") << true << true; QTest::newRow("not hfw") << false << false; QTest::newRow("not hfw, nested") << false << true; } void tst_QGraphicsLinearLayout::heightForWidth() { QFETCH(bool, hfw); QFETCH(bool, nested); QGraphicsScene scene; QGraphicsWidget *form = new QGraphicsWidget; scene.addItem(form); QGraphicsLinearLayout *outerlayout = 0; if (nested) { outerlayout = new QGraphicsLinearLayout(form); for (int i = 0; i < 8; i++) { QGraphicsLinearLayout *layout = new QGraphicsLinearLayout(Qt::Vertical); outerlayout->addItem(layout); outerlayout = layout; } } QGraphicsLinearLayout *qlayout = 0; qlayout = new QGraphicsLinearLayout(Qt::Vertical); if (nested) outerlayout->addItem(qlayout); else form->setLayout(qlayout); MySquareWidget *widget = new MySquareWidget; for (int i = 0; i < 1; i++) { widget = new MySquareWidget; QSizePolicy sizepolicy = widget->sizePolicy(); sizepolicy.setHeightForWidth(hfw); widget->setSizePolicy(sizepolicy); qlayout->addItem(widget); } // make sure only one iteration is done. // run with tst_QGraphicsLinearLayout.exe "heightForWidth" -tickcounter -iterations 6 // this will iterate 6 times the whole test, (not only the benchmark) // which should reduce warmup time and give a realistic picture of the performance of // effectiveSizeHint() QSizeF constraint(hfw ? 100 : -1, -1); QBENCHMARK { (void)form->effectiveSizeHint(Qt::PreferredSize, constraint); } } QTEST_MAIN(tst_QGraphicsLinearLayout) #include "tst_qgraphicslinearlayout.moc"