tests/benchmarks/uimodels/GraphicsViewBenchmark/widgets/iconitem.cpp
changeset 3 41300fa6a67c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/benchmarks/uimodels/GraphicsViewBenchmark/widgets/iconitem.cpp	Tue Feb 02 00:43:10 2010 +0200
@@ -0,0 +1,169 @@
+/****************************************************************************
+**
+** 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 <QtGui>
+#include <QSvgRenderer>
+
+#if (QT_VERSION >= 0x040600)
+#include <QGraphicsEffect>
+#endif
+
+#include "iconitem.h"
+
+IconItem::IconItem(const QString &filename, QGraphicsItem *parent) 
+  : GvbWidget(parent)
+  , m_filename(filename)
+  , m_rotation(0.0)
+#if (QT_VERSION >= 0x040600)
+  , m_opacityEffect(0)
+#endif
+  , m_smoothTransformation(false)
+{
+    setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
+    setContentsMargins(0,0,0,0);
+    setPreferredSize(58,58);
+}
+
+IconItem::~IconItem()
+{
+}
+
+void IconItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
+{
+    Q_UNUSED(option);
+    Q_UNUSED(widget);
+
+    reload();
+
+    const QPointF c = boundingRect().center();
+    painter->translate(c.x(), c.y());
+    painter->rotate(m_rotation);
+    painter->translate(-c.x(), -c.y());
+
+    if (m_smoothTransformation)
+        painter->setRenderHints(QPainter::SmoothPixmapTransform);
+
+    painter->drawPixmap(0,0, m_pixmap);
+}
+
+QSizeF IconItem::sizeHint(Qt::SizeHint which, 
+    const QSizeF &constraint) const
+{
+    switch (which)
+    {
+    case Qt::MinimumSize:
+    case Qt::PreferredSize:
+    case Qt::MaximumSize:
+        return m_pixmap.size();
+
+    default:
+        return GvbWidget::sizeHint(which, constraint);
+    }
+}
+
+void IconItem::reload()
+{
+    const QSize iconSize = size().toSize();
+    if (iconSize.width() == 0 || iconSize.height()  == 0)
+        return;
+
+    const QString key = m_filename+QString::number(iconSize.width())+QString::number(iconSize.height());
+    if (QPixmapCache::find(key, m_pixmap))
+        return;
+
+    if (m_filename.endsWith(".svg", Qt::CaseInsensitive))
+    {
+        m_pixmap = QPixmap(iconSize);
+        m_pixmap.fill(Qt::transparent);
+        QSvgRenderer doc(m_filename);
+        QPainter painter(&m_pixmap);
+        painter.setViewport(0, 0, iconSize.width(), iconSize.height());
+        doc.render(&painter);
+    }
+    else
+    {
+        m_pixmap = QPixmap(m_filename).scaled(iconSize);
+    }
+
+    QPixmapCache::insert(key, m_pixmap);
+    updateGeometry();
+}
+
+QString IconItem::fileName() const
+{
+    return m_filename;
+}
+
+void IconItem::setFileName(const QString &filename)
+{
+    if( m_filename != filename) {
+        m_filename = filename;
+        reload();
+    }
+}
+
+#if (QT_VERSION >= 0x040600)
+void IconItem::setOpacityEffectEnabled(const bool enable)
+{
+    if (!m_opacityEffect)
+    {
+        QRadialGradient gradient(0.5, 0.5, 1.0);
+        gradient.setCoordinateMode(QGradient::ObjectBoundingMode);
+        gradient.setColorAt(0.0, QColor(0,0,0, 255));
+        gradient.setColorAt(0.46, QColor(0,0,0, 255));
+        gradient.setColorAt(0.62, QColor(0,0,0, 0));
+    
+        m_opacityEffect = new QGraphicsOpacityEffect;
+        m_opacityEffect->setOpacityMask(gradient);
+        m_opacityEffect->setOpacity(1.0);
+        this->setGraphicsEffect(m_opacityEffect);
+    }
+    m_opacityEffect->setEnabled(enable);
+}
+
+bool IconItem::isOpacityEffectEnabled() const
+{
+    if (m_opacityEffect)
+        return m_opacityEffect->isEnabled();
+
+    return false;
+}
+#endif