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
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+++ b/tests/benchmarks/gui/graphicsview/functional/GraphicsViewBenchmark/widgets/abstractscrollarea.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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);
+    }
+}
+
+
+
+