Add a benchmark for QGraphicsAnchorLayout.

1 files changed, 197 insertions, 0 deletions

diff --git a/tests/benchmarks/qgraphicsanchorlayout/tst_qgraphicsanchorlayout.cpp b/tests/benchmarks/qgraphicsanchorlayout/tst_qgraphicsanchorlayout.cpp
new file mode 100644
index 0000000..e419bae
--- /dev/null
+++ b/tests/benchmarks/qgraphicsanchorlayout/tst_qgraphicsanchorlayout.cpp
@@ -0,0 +1,197 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtTest/QtTest>
+#include <QtGui/qgraphicsanchorlayout.h>
+#include <QtGui/qgraphicswidget.h>
+#include <QtGui/qgraphicsview.h>
+
+class tst_QGraphicsAnchorLayout : public QObject
+{
+    Q_OBJECT
+public:
+    tst_QGraphicsAnchorLayout() {}
+    ~tst_QGraphicsAnchorLayout() {}
+
+private slots:
+    void s60_hard_complex_data();
+    void s60_hard_complex();
+};
+
+
+class RectWidget : public QGraphicsWidget
+{
+public:
+    RectWidget(QGraphicsItem *parent = 0) : QGraphicsWidget(parent){}
+
+    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());
+    }
+};
+
+static QGraphicsWidget *createItem(const QSizeF &minimum = QSizeF(100.0, 100.0),
+                                   const QSizeF &preferred = QSize(150.0, 100.0),
+                                   const QSizeF &maximum = QSizeF(200.0, 100.0),
+                                   const QString &name = QString())
+{
+    QGraphicsWidget *w = new RectWidget;
+    w->setMinimumSize(minimum);
+    w->setPreferredSize(preferred);
+    w->setMaximumSize(maximum);
+    w->setData(0, name);
+    return w;
+}
+
+static void setAnchor(QGraphicsAnchorLayout *l,
+                      QGraphicsLayoutItem *firstItem,
+                      Qt::AnchorPoint firstEdge,
+                      QGraphicsLayoutItem *secondItem,
+                      Qt::AnchorPoint secondEdge,
+                      qreal spacing)
+{
+    l->addAnchor(firstItem, firstEdge, secondItem, secondEdge);
+    l->setAnchorSpacing(firstItem, firstEdge, secondItem, secondEdge, spacing);
+}
+
+void tst_QGraphicsAnchorLayout::s60_hard_complex_data()
+{
+    QTest::addColumn<int>("whichSizeHint");
+    QTest::newRow("minimumSizeHint")
+        << int(Qt::MinimumSize);
+    QTest::newRow("preferredSizeHint")
+        << int(Qt::PreferredSize);
+    QTest::newRow("maximumSizeHint")
+        << int(Qt::MaximumSize);
+    // Add it as a reference to see how much overhead the body of effectiveSizeHint takes.
+    QTest::newRow("noSizeHint")
+        << -1;
+}
+
+void tst_QGraphicsAnchorLayout::s60_hard_complex()
+{
+    QFETCH(int, whichSizeHint);
+
+    // Test for "hard" complex case, taken from wiki
+    // https://cwiki.nokia.com/S60QTUI/AnchorLayoutComplexCases
+    QSizeF min(0, 10);
+    QSizeF pref(50, 10);
+    QSizeF max(100, 10);
+
+    QGraphicsWidget *a = createItem(min, pref, max, "a");
+    QGraphicsWidget *b = createItem(min, pref, max, "b");
+    QGraphicsWidget *c = createItem(min, pref, max, "c");
+    QGraphicsWidget *d = createItem(min, pref, max, "d");
+    QGraphicsWidget *e = createItem(min, pref, max, "e");
+    QGraphicsWidget *f = createItem(min, pref, max, "f");
+    QGraphicsWidget *g = createItem(min, pref, max, "g");
+
+    QGraphicsAnchorLayout *l = new QGraphicsAnchorLayout;
+    l->setContentsMargins(0, 0, 0, 0);
+
+    //<!-- Trunk -->
+    setAnchor(l, l, Qt::AnchorLeft, a, Qt::AnchorLeft, 10);
+    setAnchor(l, a, Qt::AnchorRight, b, Qt::AnchorLeft, 10);
+    setAnchor(l, b, Qt::AnchorRight, c, Qt::AnchorLeft, 10);
+    setAnchor(l, c, Qt::AnchorRight, d, Qt::AnchorLeft, 10);
+    setAnchor(l, d, Qt::AnchorRight, l, Qt::AnchorRight, 10);
+
+    //<!-- Above trunk -->
+    setAnchor(l, b, Qt::AnchorLeft, e, Qt::AnchorLeft, 10);
+    setAnchor(l, e, Qt::AnchorRight, d, Qt::AnchorLeft, 10);
+
+    //<!-- Below trunk -->
+    setAnchor(l, a, Qt::AnchorHorizontalCenter, g, Qt::AnchorLeft, 10);
+    setAnchor(l, g, Qt::AnchorRight, f, Qt::AnchorHorizontalCenter, 10);
+    setAnchor(l, c, Qt::AnchorLeft, f, Qt::AnchorLeft, 10);
+    setAnchor(l, f, Qt::AnchorRight, d, Qt::AnchorRight, 10);
+
+    //<!-- vertical is simpler -->
+    setAnchor(l, l, Qt::AnchorTop, e, Qt::AnchorTop, 0);
+    setAnchor(l, e, Qt::AnchorBottom, a, Qt::AnchorTop, 0);
+    setAnchor(l, e, Qt::AnchorBottom, b, Qt::AnchorTop, 0);
+    setAnchor(l, e, Qt::AnchorBottom, c, Qt::AnchorTop, 0);
+    setAnchor(l, e, Qt::AnchorBottom, d, Qt::AnchorTop, 0);
+    setAnchor(l, a, Qt::AnchorBottom, f, Qt::AnchorTop, 0);
+    setAnchor(l, a, Qt::AnchorBottom, b, Qt::AnchorBottom, 0);
+    setAnchor(l, a, Qt::AnchorBottom, c, Qt::AnchorBottom, 0);
+    setAnchor(l, a, Qt::AnchorBottom, d, Qt::AnchorBottom, 0);
+    setAnchor(l, f, Qt::AnchorBottom, g, Qt::AnchorTop, 0);
+    setAnchor(l, g, Qt::AnchorBottom, l, Qt::AnchorBottom, 0);
+
+    // It won't query the size hint if it already has a size set.
+    // If only one of the sizes is unset it will query sizeHint only of for that hint type.
+    l->setMinimumSize(60,40);
+    l->setPreferredSize(220,40);
+    l->setMaximumSize(240,40);
+
+    switch (whichSizeHint) {
+    case Qt::MinimumSize:
+        l->setMinimumSize(-1, -1);
+        break;
+    case Qt::PreferredSize:
+        l->setPreferredSize(-1, -1);
+        break;
+    case Qt::MaximumSize:
+        l->setMaximumSize(-1, -1);
+        break;
+    default:
+        break;
+    }
+
+    QSizeF sizeHint;
+    // warm up instruction cache
+    l->invalidate();
+    sizeHint = l->effectiveSizeHint((Qt::SizeHint)whichSizeHint);
+    // ...then measure...
+    QBENCHMARK {
+        l->invalidate();
+        sizeHint = l->effectiveSizeHint((Qt::SizeHint)whichSizeHint);
+    }
+}
+
+QTEST_MAIN(tst_QGraphicsAnchorLayout)
+
+#include "tst_qgraphicsanchorlayout.moc"