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, 299 insertions, 0 deletions

diff --git a/tests/benchmarks/gui/graphicsview/functional/GraphicsViewBenchmark/widgets/scrollbar.cpp b/tests/benchmarks/gui/graphicsview/functional/GraphicsViewBenchmark/widgets/scrollbar.cpp
new file mode 100644
index 0000000000..a71eaa8048
--- /dev/null
+++ b/tests/benchmarks/gui/graphicsview/functional/GraphicsViewBenchmark/widgets/scrollbar.cpp
@@ -0,0 +1,299 @@
+/****************************************************************************
+**
+** 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 <QGraphicsWidget>
+#include <QPainter>
+#include <QGraphicsSceneMouseEvent>
+#include <QDebug>
+
+#include "scrollbar.h"
+#include "theme.h"
+
+class ScrollBarPrivate {
+    Q_DECLARE_PUBLIC(ScrollBar)
+
+public:
+
+    ScrollBarPrivate(Qt::Orientation orientation, ScrollBar *scrollBar) 
+        : orientation(orientation)
+        , sliderPosition(0.0)
+        , sliderSize(0.0)
+        , sliderDown(false)
+        , q_ptr(scrollBar)
+    {
+         construct();
+    }
+
+    void themeChange()
+    {
+        construct();
+        updateSlider();
+    }
+
+    void construct()
+    {
+        scrollerPixmap = Theme::p()->pixmap("scroll.svg");
+        scrollBarPixmap = Theme::p()->pixmap("scrollbar.svg");
+
+        if (orientation == Qt::Horizontal) {
+            scrollerPixmap = scrollerPixmap.transformed(QTransform().rotate(90));
+            scrollBarPixmap = scrollBarPixmap.transformed(QTransform().rotate(90));
+        }
+    }
+
+    void setSliderPosition(qreal pos)
+    {
+        if (pos < 0.0)
+            pos = 0.0;
+
+        if (pos > sliderSize)
+            pos = sliderSize;
+
+        sliderPosition = pos;
+
+        if (!qFuzzyCompare(pos, sliderPosition))
+            updateSlider();
+    }
+
+    void updateSlider()
+    {
+        QRectF oldSlider = slider;
+        slider = q_func()->boundingRect(); 
+        
+        qreal x = 0;
+        qreal y = 0;
+        qreal w = scrollerPixmap.width();
+        qreal h = scrollerPixmap.height();
+        
+        //Adjust the scrollBar in relation to the scroller
+        
+        if (orientation == Qt::Horizontal) {
+            qreal scrollBarHeight = scrollBarPixmap.height();
+
+            if  (h > scrollBarHeight) {
+                slider.setTop((h - scrollBarHeight)/2.0);
+                slider.setHeight(scrollBarHeight);
+            }
+        } else {
+            qreal scrollBarWidth = scrollBarPixmap.width();
+
+            if  (w > scrollBarWidth) {
+                slider.setLeft((w - scrollBarWidth)/2.0);
+            }
+            slider.setWidth(scrollBarWidth);
+        }
+        
+        if(oldSlider != slider && (slider.size().width() > 0 &&slider.size().height() > 0 )) {
+            scrollBarPixmap = Theme::p()->pixmap("scrollbar.svg", slider.size().toSize());
+        }
+        cursor = QRectF(x, y, w, h);
+
+        if (orientation == Qt::Horizontal) {
+            qreal dx = qreal(int(sliderPosition)) * (slider.width() - cursor.width()) / sliderSize;
+            cursor.translate(dx, 0.0);
+        } else {
+            qreal dy = qreal(int(sliderPosition)) * (slider.height() - cursor.height()) / sliderSize;
+            cursor.translate(0.0, dy);
+        }
+    }
+
+    Qt::Orientation orientation;
+    qreal sliderPosition;
+    qreal sliderSize;
+
+    QPointF pressPos;
+    bool sliderDown;
+
+    QRectF slider;
+    QRectF cursor;
+    QPixmap scrollerPixmap;
+    QPixmap scrollBarPixmap;
+
+    ScrollBar *q_ptr;
+};
+
+ScrollBar::ScrollBar(Qt::Orientation orientation, QGraphicsWidget *parent)
+    : QGraphicsWidget(parent)
+    , d_ptr(new ScrollBarPrivate(orientation, this))
+{     
+    setSizePolicy(QSizePolicy::Fixed, QSizePolicy::MinimumExpanding);
+    setContentsMargins(0, 0, 0, 0);
+
+    connect(Theme::p(), SIGNAL(themeChanged()), this, SLOT(themeChange()));
+}
+
+ScrollBar::~ScrollBar()
+{
+    delete d_ptr;
+}
+
+qreal ScrollBar::sliderSize() const
+{
+    Q_D(const ScrollBar);
+    return d->sliderSize;
+}
+
+void ScrollBar::setSliderSize(const qreal s)
+{
+    Q_D(ScrollBar);
+    d->sliderSize = s;
+}
+
+void ScrollBar::setSliderPosition(qreal pos)
+{
+    Q_D(ScrollBar);
+
+    d->setSliderPosition(pos);
+    prepareGeometryChange();
+    emit sliderPositionChange(d->sliderPosition);
+}
+
+qreal ScrollBar::sliderPosition() const
+{
+    Q_D(const ScrollBar);
+    return d->sliderPosition;
+}
+
+bool ScrollBar::sliderDown() const
+{
+    Q_D(const ScrollBar);
+    return d->sliderDown;
+}
+
+void ScrollBar::paint(QPainter *painter, 
+        const QStyleOptionGraphicsItem *option, 
+        QWidget *widget)
+{
+    Q_D(ScrollBar);
+    Q_UNUSED(widget);
+    Q_UNUSED(option);
+
+    d->updateSlider();
+
+    QRect sliderRect = d->slider.toRect(); 
+    painter->drawPixmap(sliderRect.topLeft(), d->scrollBarPixmap);
+    
+    QRect cursorRect = d->cursor.toRect();
+    painter->drawPixmap(cursorRect.topLeft(), d->scrollerPixmap);
+}
+
+QSizeF ScrollBar::sizeHint(Qt::SizeHint which, 
+        const QSizeF &constraint) const 
+{
+    Q_D(const ScrollBar);
+
+    QSizeF s;
+
+    if (d->orientation == Qt::Horizontal) 
+        s = QSizeF(-1, qMax(d->scrollBarPixmap.height(), d->scrollerPixmap.height()));
+    else 
+        s = QSizeF(qMax(d->scrollBarPixmap.width(), d->scrollerPixmap.width()), -1);
+
+    switch (which)
+    {
+    case Qt::MinimumSize:
+        return s;
+
+    case Qt::MaximumSize:
+        return s;
+
+    default:
+        return QGraphicsWidget::sizeHint(which, constraint);
+    }
+}
+
+void ScrollBar::mousePressEvent(QGraphicsSceneMouseEvent *event)
+{
+    Q_D(ScrollBar);
+
+    d->updateSlider();
+
+    if (d->cursor.contains(event->pos())) {
+        d->sliderDown = true;
+        d->pressPos = event->pos();
+        emit sliderPressed();
+    }
+}
+
+void ScrollBar::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
+{
+    Q_D(ScrollBar);
+    Q_UNUSED(event);
+
+    d->sliderDown = false;
+}
+
+void ScrollBar::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
+{
+    Q_D(ScrollBar);
+
+    if (!d->sliderDown) 
+        return;
+
+    if (d->orientation == Qt::Horizontal) {
+        qreal f = (event->pos().x() - d->pressPos.x())/(d->slider.width() - d->cursor.width());
+        qreal dx = f * d->sliderSize;
+        
+        d->setSliderPosition(d->sliderPosition + dx);
+    } else {
+        qreal f = (event->pos().y() - d->pressPos.y())/(d->slider.height() - d->cursor.height());
+        qreal dy = f * d->sliderSize;
+ 
+        d->setSliderPosition(d->sliderPosition + dy);
+    }
+
+    d->pressPos = event->pos();
+
+    prepareGeometryChange();
+    emit sliderPositionChange(d->sliderPosition);
+}
+
+void ScrollBar::resizeEvent(QGraphicsSceneResizeEvent *event)
+{
+    QGraphicsWidget::resizeEvent(event);
+}
+
+void ScrollBar::themeChange()
+{
+    Q_D(ScrollBar);
+    d->themeChange();
+}
+