1 files changed, 120 insertions, 0 deletions
diff --git a/tests/benchmarks/widgets/graphicsview/qgraphicslinearlayout/tst_qgraphicslinearlayout.cpp b/tests/benchmarks/widgets/graphicsview/qgraphicslinearlayout/tst_qgraphicslinearlayout.cpp
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+++ b/tests/benchmarks/widgets/graphicsview/qgraphicslinearlayout/tst_qgraphicslinearlayout.cpp
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+/****************************************************************************
+**
+** 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 <QtTest>
+#include <QGraphicsLinearLayout>
+#include <QGraphicsWidget>
+#include <QGraphicsView>
+
+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<bool>("hfw");
+    QTest::addColumn<bool>("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"