Add functional Graphics View benchmarks.

Widgets and use cases are externally developed and imported from:
git://gitorious.org/+qt-performance-test-developers/qt/qt-performance-test-developers-clone.git
(master branch, tests/benchmarks/uimodels/GraphicsViewBenchmark)

I couldn't simply import everything because the benchmarks were heavily
dependent on an internal measuring tool involving QtScripts and whatnot,
not suitable for inclusion in the Qt repository. Everything is now converted
into proper QTestLib compatible benchmark functions.

1 files changed, 249 insertions, 0 deletions

diff --git a/tests/benchmarks/gui/graphicsview/functional/GraphicsViewBenchmark/widgets/abstractscrollarea.cpp b/tests/benchmarks/gui/graphicsview/functional/GraphicsViewBenchmark/widgets/abstractscrollarea.cpp
new file mode 100644
index 0000000..8bef331
--- /dev/null
+++ b/tests/benchmarks/gui/graphicsview/functional/GraphicsViewBenchmark/widgets/abstractscrollarea.cpp
@@ -0,0 +1,249 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples 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 <QGraphicsSceneResizeEvent>
+#include <QGraphicsWidget>
+#include <QDebug>
+#include "abstractscrollarea.h"
+#include "scrollbar.h"
+
+AbstractScrollArea::AbstractScrollArea(QGraphicsWidget *parent)
+    : GvbWidget(parent)
+    , m_viewport(0)
+    , m_horizontalScrollBar(0)
+    , m_verticalScrollBar(0)
+    , m_prevHorizontalValue(0.0)
+    , m_prevVerticalValue(0.0)
+{
+    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
+    setContentsMargins(0, 0, 0, 0);     
+
+    m_horizontalScrollBar = new ScrollBar(Qt::Horizontal, this);
+    m_horizontalScrollBar->hide();
+    m_horizontalScrollBar->setContentsMargins(0, 0, 0, 0); 
+    m_horizontalScrollBarPolicy = Qt::ScrollBarAsNeeded;
+    m_horizontalScrollBar->setZValue(zValue()+1); // Raise scroll bar to top
+    m_horizontalScrollBar->setVisible(false);
+
+    connect(m_horizontalScrollBar, SIGNAL(sliderPositionChange(qreal)),
+            this, SLOT(horizontalScroll(qreal)));
+    connect(m_horizontalScrollBar, SIGNAL(sliderPressed()),
+            this, SLOT(horizontalScrollStart()));
+
+    m_verticalScrollBar = new ScrollBar(Qt::Vertical, this);
+    m_verticalScrollBar->hide();
+    m_verticalScrollBar->setContentsMargins(0, 0, 0, 0); 
+    m_verticalScrollBarPolicy = Qt::ScrollBarAsNeeded;
+    m_verticalScrollBar->setZValue(zValue()+1); // Raise scroll bar to top
+    m_verticalScrollBar->setVisible(false);
+
+    connect(m_verticalScrollBar, SIGNAL(sliderPositionChange(qreal)),
+            this, SLOT(verticalScroll(qreal)));
+    connect(m_verticalScrollBar, SIGNAL(sliderPressed()),
+            this, SLOT(verticalScrollStart()));
+
+    QGraphicsWidget *viewport = new QGraphicsWidget;
+    setViewport(viewport);
+}
+
+AbstractScrollArea::~AbstractScrollArea()
+{
+}
+
+ScrollBar *AbstractScrollArea::verticalScrollBar() const
+{
+    return m_verticalScrollBar;
+}
+
+ScrollBar *AbstractScrollArea::horizontalScrollBar() const
+{
+    return m_horizontalScrollBar;
+}
+
+void AbstractScrollArea::setHorizontalScrollBarPolicy(Qt::ScrollBarPolicy policy)
+{
+    m_horizontalScrollBarPolicy = policy;
+}
+
+void AbstractScrollArea::setVerticalScrollBarPolicy(Qt::ScrollBarPolicy policy)
+{
+    m_verticalScrollBarPolicy = policy;
+}
+
+Qt::ScrollBarPolicy AbstractScrollArea::verticalScrollBarPolicy() const
+{
+    return m_verticalScrollBarPolicy;
+}
+
+Qt::ScrollBarPolicy AbstractScrollArea::horizontalScrollBarPolicy() const
+{
+    return m_horizontalScrollBarPolicy;
+}
+
+QGraphicsWidget *AbstractScrollArea::viewport() const
+{
+    return m_viewport;
+}
+
+void AbstractScrollArea::setViewport(QGraphicsWidget *viewport)
+{
+    if (m_viewport) {
+        m_viewport->setParentItem(0);
+
+        QList<QGraphicsItem*> children = m_viewport->childItems();
+
+        foreach (QGraphicsItem *child, children)
+            child->setParentItem(0);
+
+        delete m_viewport;
+    }
+
+    m_viewport = viewport;
+
+    if (viewport) {
+
+        m_viewport->setParentItem(this);
+        m_viewport->setContentsMargins(0, 0, 0, 0);
+
+        adjustScrollBars();
+    }
+
+    emit viewportChanged(viewport);
+}
+
+bool AbstractScrollArea::event(QEvent *e)
+{
+    if (e->type() == QEvent::ApplicationLayoutDirectionChange
+       || e->type() == QEvent::LayoutDirectionChange) {
+    } else if (e->type() == QEvent::GraphicsSceneResize) {        
+        QGraphicsSceneResizeEvent *event = 
+            static_cast<QGraphicsSceneResizeEvent*>(e);
+
+        QSizeF newSize = event->newSize();
+        QRectF hrect = m_horizontalScrollBar->boundingRect();
+        QRectF vrect = m_verticalScrollBar->boundingRect();
+
+        QSizeF vpSize = newSize;
+
+        if (m_horizontalScrollBarPolicy != Qt::ScrollBarAlwaysOff)
+            vpSize.setHeight(newSize.height() - hrect.height());
+        if (m_verticalScrollBarPolicy != Qt::ScrollBarAlwaysOff)
+            vpSize.setWidth(newSize.width() - vrect.width());
+
+        m_viewport->resize(vpSize);
+
+        adjustScrollBars();
+    }
+
+    return QGraphicsWidget::event(e);
+}
+
+
+void AbstractScrollArea::scrollContentsBy(qreal dx, qreal dy)
+{
+    Q_UNUSED(dx)
+    Q_UNUSED(dy)
+    prepareGeometryChange();
+}
+
+void AbstractScrollArea::verticalScrollStart()
+{
+    m_prevVerticalValue = m_verticalScrollBar->sliderPosition(); 
+}
+
+void AbstractScrollArea::verticalScroll(qreal value)
+{
+    qreal dy = value - m_prevVerticalValue;
+    if (!qFuzzyCompare(dy,qreal(0.0))) {
+        scrollContentsBy(0.0, dy);
+        m_prevVerticalValue = value;
+    }
+}
+
+void AbstractScrollArea::horizontalScrollStart()
+{
+    m_prevHorizontalValue = m_horizontalScrollBar->sliderPosition(); 
+}
+
+void AbstractScrollArea::horizontalScroll(qreal value)
+{
+    qreal dx = value - m_prevHorizontalValue;
+    if (!qFuzzyCompare(dx,qreal(0.0))) {
+        scrollContentsBy(dx, 0.0);
+        m_prevHorizontalValue = value;
+    }
+}
+
+void AbstractScrollArea::adjustScrollBars()
+{
+    if (m_horizontalScrollBarPolicy == Qt::ScrollBarAlwaysOff) {
+        m_horizontalScrollBar->hide();
+    } else {
+        m_horizontalScrollBar->show();
+
+        QRectF sbgeom = boundingRect();
+
+        sbgeom.setTop(sbgeom.bottom() - m_horizontalScrollBar->boundingRect().height());
+        sbgeom.setRight(sbgeom.right() - m_verticalScrollBar->boundingRect().width());
+        m_horizontalScrollBar->setGeometry(sbgeom);
+    }
+
+    if (m_verticalScrollBarPolicy == Qt::ScrollBarAlwaysOff) {
+        m_verticalScrollBar->hide();
+        QRectF sbgeom = boundingRect();
+        sbgeom.setLeft(sbgeom.right());
+        sbgeom.setBottom(sbgeom.bottom());
+        m_verticalScrollBar->setGeometry(sbgeom);
+    } else {
+        m_verticalScrollBar->show();
+
+        QRectF sbgeom = boundingRect();
+
+        sbgeom.setLeft(sbgeom.right() - m_verticalScrollBar->boundingRect().width());
+        if (m_horizontalScrollBarPolicy != Qt::ScrollBarAlwaysOff)
+            sbgeom.setBottom(sbgeom.bottom() - m_horizontalScrollBar->boundingRect().height());
+        m_verticalScrollBar->setGeometry(sbgeom);
+    }
+}
+
+
+
+