qt-everywhere-src-5.14.1/qtsvg/src/svg/qgraphicssvgitem.cpp - orbit - Git at Google

 /****************************************************************************
 **
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the Qt SVG module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
 ** Licensees holding valid commercial Qt licenses may use this file in
 ** accordance with the commercial license agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and The Qt Company. For licensing terms
 ** and conditions see https://www.qt.io/terms-conditions. For further
 ** information use the contact form at https://www.qt.io/contact-us.
 **
 ** GNU Lesser General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 3 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.LGPL3 included in the
 ** packaging of this file. Please review the following information to
 ** ensure the GNU Lesser General Public License version 3 requirements
 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 2.0 or (at your option) the GNU General
 ** Public license version 3 or any later version approved by the KDE Free
 ** Qt Foundation. The licenses are as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
 ** included in the packaging of this file. Please review the following
 ** information to ensure the GNU General Public License requirements will
 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and
 ** https://www.gnu.org/licenses/gpl-3.0.html.
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
 #include "qgraphicssvgitem.h"

 #if !defined(QT_NO_GRAPHICSVIEW) && !defined(QT_NO_WIDGETS)

 #include "qpainter.h"
 #include "qstyleoption.h"
 #include "qsvgrenderer.h"
 #include "qdebug.h"

 #include "private/qobject_p.h"
 #include "private/qgraphicsitem_p.h"

 QT_BEGIN_NAMESPACE

 class QGraphicsSvgItemPrivate : public QGraphicsItemPrivate
 {
 public:
     Q_DECLARE_PUBLIC(QGraphicsSvgItem)

     QGraphicsSvgItemPrivate()
         : renderer(0), shared(false)
     {
     }

     void init(QGraphicsItem *parent)
     {
         Q_Q(QGraphicsSvgItem);
         q->setParentItem(parent);
         renderer = new QSvgRenderer(q);
         QObject::connect(renderer, SIGNAL(repaintNeeded()),
                          q, SLOT(_q_repaintItem()));
         q->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
         q->setMaximumCacheSize(QSize(1024, 768));
     }

     void _q_repaintItem()
     {
         q_func()->update();
     }

     inline void updateDefaultSize()
     {
         QRectF bounds;
         if (elemId.isEmpty()) {
             bounds = QRectF(QPointF(0, 0), renderer->defaultSize());
         } else {
             bounds = renderer->boundsOnElement(elemId);
         }
         if (boundingRect.size() != bounds.size()) {
             q_func()->prepareGeometryChange();
             boundingRect.setSize(bounds.size());
         }
     }

     QSvgRenderer *renderer;
     QRectF boundingRect;
     bool shared;
     QString elemId;
 };

 /*!
     \class QGraphicsSvgItem
     \inmodule QtSvg
     \ingroup graphicsview-api
     \brief The QGraphicsSvgItem class is a QGraphicsItem that can be used to render
            the contents of SVG files.

     \since 4.2

     QGraphicsSvgItem provides a way of rendering SVG files onto QGraphicsView.
     QGraphicsSvgItem can be created by passing the SVG file to be rendered to
     its constructor or by explicit setting a shared QSvgRenderer on it.

     Note that setting QSvgRenderer on a QGraphicsSvgItem doesn't make the item take
     ownership of the renderer, therefore if using setSharedRenderer() method one has
     to make sure that the lifetime of the QSvgRenderer object will be at least as long
     as that of the QGraphicsSvgItem.

     QGraphicsSvgItem provides a way of rendering only parts of the SVG files via
     the setElementId. If setElementId() method is called, only the SVG element
     (and its children) with the passed id will be renderer. This provides a convenient
     way of selectively rendering large SVG files that contain a number of discrete
     elements. For example the following code renders only jokers from a SVG file
     containing a whole card deck:

     \snippet src_svg_qgraphicssvgitem.cpp 0

     Size of the item can be set via direct manipulation of the items
     transformation matrix.

     By default the SVG rendering is cached using QGraphicsItem::DeviceCoordinateCache
     mode to speedup the display of items. Caching can be disabled by passing
     QGraphicsItem::NoCache to the QGraphicsItem::setCacheMode() method.

     \sa QSvgWidget, {Qt SVG C++ Classes}, QGraphicsItem, QGraphicsView
 */

 /*!
     Constructs a new SVG item with the given \a parent.
 */
 QGraphicsSvgItem::QGraphicsSvgItem(QGraphicsItem *parent)
     : QGraphicsObject(*new QGraphicsSvgItemPrivate(), 0)
 {
     Q_D(QGraphicsSvgItem);
     d->init(parent);
 }

 /*!
     Constructs a new item with the given \a parent and loads the contents of the
     SVG file with the specified \a fileName.
 */
 QGraphicsSvgItem::QGraphicsSvgItem(const QString &fileName, QGraphicsItem *parent)
     : QGraphicsObject(*new QGraphicsSvgItemPrivate(), 0)
 {
     Q_D(QGraphicsSvgItem);
     d->init(parent);
     d->renderer->load(fileName);
     d->updateDefaultSize();
 }

 /*!
     Returns the currently use QSvgRenderer.
 */
 QSvgRenderer *QGraphicsSvgItem::renderer() const
 {
     return d_func()->renderer;
 }


 /*!
     Returns the bounding rectangle of this item.
 */
 QRectF QGraphicsSvgItem::boundingRect() const
 {
     Q_D(const QGraphicsSvgItem);
     return d->boundingRect;
 }

 /*!
     \internal

     Highlights \a item as selected.

     NOTE: This function is a duplicate of qt_graphicsItem_highlightSelected() in qgraphicsitem.cpp!
 */
 static void qt_graphicsItem_highlightSelected(
     QGraphicsItem *item, QPainter *painter, const QStyleOptionGraphicsItem *option)
 {
     const QRectF murect = painter->transform().mapRect(QRectF(0, 0, 1, 1));
     if (qFuzzyIsNull(qMax(murect.width(), murect.height())))
         return;

     const QRectF mbrect = painter->transform().mapRect(item->boundingRect());
     if (qMin(mbrect.width(), mbrect.height()) < qreal(1.0))
         return;

     qreal itemPenWidth;
     switch (item->type()) {
         case QGraphicsEllipseItem::Type:
             itemPenWidth = static_cast<QGraphicsEllipseItem *>(item)->pen().widthF();
             break;
         case QGraphicsPathItem::Type:
             itemPenWidth = static_cast<QGraphicsPathItem *>(item)->pen().widthF();
             break;
         case QGraphicsPolygonItem::Type:
             itemPenWidth = static_cast<QGraphicsPolygonItem *>(item)->pen().widthF();
             break;
         case QGraphicsRectItem::Type:
             itemPenWidth = static_cast<QGraphicsRectItem *>(item)->pen().widthF();
             break;
         case QGraphicsSimpleTextItem::Type:
             itemPenWidth = static_cast<QGraphicsSimpleTextItem *>(item)->pen().widthF();
             break;
         case QGraphicsLineItem::Type:
             itemPenWidth = static_cast<QGraphicsLineItem *>(item)->pen().widthF();
             break;
         default:
             itemPenWidth = 1.0;
     }
     const qreal pad = itemPenWidth / 2;

     const qreal penWidth = 0; // cosmetic pen

     const QColor fgcolor = option->palette.windowText().color();
     const QColor bgcolor( // ensure good contrast against fgcolor
         fgcolor.red()   > 127 ? 0 : 255,
         fgcolor.green() > 127 ? 0 : 255,
         fgcolor.blue()  > 127 ? 0 : 255);

     painter->setPen(QPen(bgcolor, penWidth, Qt::SolidLine));
     painter->setBrush(Qt::NoBrush);
     painter->drawRect(item->boundingRect().adjusted(pad, pad, -pad, -pad));

     painter->setPen(QPen(option->palette.windowText(), 0, Qt::DashLine));
     painter->setBrush(Qt::NoBrush);
     painter->drawRect(item->boundingRect().adjusted(pad, pad, -pad, -pad));
 }

 /*!
     \reimp
 */
 void QGraphicsSvgItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
                              QWidget *widget)
 {
 //    Q_UNUSED(option);
     Q_UNUSED(widget);

     Q_D(QGraphicsSvgItem);
     if (!d->renderer->isValid())
         return;

     if (d->elemId.isEmpty())
         d->renderer->render(painter, d->boundingRect);
     else
         d->renderer->render(painter, d->elemId, d->boundingRect);

     if (option->state & QStyle::State_Selected)
         qt_graphicsItem_highlightSelected(this, painter, option);
 }

 /*!
     \reimp
 */
 int QGraphicsSvgItem::type() const
 {
     return Type;
 }

 /*!
   \property QGraphicsSvgItem::maximumCacheSize
   \since 4.6

   This property holds the maximum size of the device coordinate cache
   for this item.
  */

 /*!
     Sets the maximum device coordinate cache size of the item to \a size.
     If the item is cached using QGraphicsItem::DeviceCoordinateCache mode,
     caching is bypassed if the extension of the item in device coordinates
     is larger than \a size.

     The cache corresponds to the QPixmap which is used to cache the
     results of the rendering.
     Use QPixmapCache::setCacheLimit() to set limitations on the whole cache
     and use setMaximumCacheSize() when setting cache size for individual
     items.

     \sa QGraphicsItem::cacheMode()
 */
 void QGraphicsSvgItem::setMaximumCacheSize(const QSize &size)
 {
     QGraphicsItem::d_ptr->setExtra(QGraphicsItemPrivate::ExtraMaxDeviceCoordCacheSize, size);
     update();
 }

 /*!
     Returns the current maximum size of the device coordinate cache for this item.
     If the item is cached using QGraphicsItem::DeviceCoordinateCache mode,
     caching is bypassed if the extension of the item in device coordinates
     is larger than the maximum size.

     The default maximum cache size is 1024x768.
     QPixmapCache::cacheLimit() gives the
     cumulative bounds of the whole cache, whereas maximumCacheSize() refers
     to a maximum cache size for this particular item.

     \sa QGraphicsItem::cacheMode()
 */
 QSize QGraphicsSvgItem::maximumCacheSize() const
 {
     return QGraphicsItem::d_ptr->extra(QGraphicsItemPrivate::ExtraMaxDeviceCoordCacheSize).toSize();
 }

 /*!
   \property QGraphicsSvgItem::elementId
   \since 4.6

   This property holds the element's XML ID.
  */

 /*!
     Sets the XML ID of the element to \a id.
 */
 void QGraphicsSvgItem::setElementId(const QString &id)
 {
     Q_D(QGraphicsSvgItem);
     d->elemId = id;
     d->updateDefaultSize();
     update();
 }

 /*!
     Returns the XML ID the element that is currently
     being rendered. Returns an empty string if the whole
     file is being rendered.
 */
 QString QGraphicsSvgItem::elementId() const
 {
     Q_D(const QGraphicsSvgItem);
     return d->elemId;
 }

 /*!
     Sets \a renderer to be a shared QSvgRenderer on the item. By
     using this method one can share the same QSvgRenderer on a number
     of items. This means that the SVG file will be parsed only once.
     QSvgRenderer passed to this method has to exist for as long as
     this item is used.
 */
 void QGraphicsSvgItem::setSharedRenderer(QSvgRenderer *renderer)
 {
     Q_D(QGraphicsSvgItem);
     if (!d->shared)
         delete d->renderer;

     d->renderer = renderer;
     d->shared = true;

     d->updateDefaultSize();

     update();
 }

 /*!
     \obsolete

     Use QGraphicsItem::setCacheMode() instead. Passing true to this function is equivalent
     to QGraphicsItem::setCacheMode(QGraphicsItem::DeviceCoordinateCache).
 */
 void QGraphicsSvgItem::setCachingEnabled(bool caching)
 {
     setCacheMode(caching ? QGraphicsItem::DeviceCoordinateCache : QGraphicsItem::NoCache);
 }

 /*!
     \obsolete

     Use QGraphicsItem::cacheMode() instead.
 */
 bool QGraphicsSvgItem::isCachingEnabled() const
 {
     return cacheMode() != QGraphicsItem::NoCache;
 }

 QT_END_NAMESPACE

 #include "moc_qgraphicssvgitem.cpp"

 #endif // QT_NO_WIDGETS
	/****************************************************************************
	**
	** Copyright (C) 2016 The Qt Company Ltd.
	** Contact: https://www.qt.io/licensing/
	**
	** This file is part of the Qt SVG module of the Qt Toolkit.
	**
	** $QT_BEGIN_LICENSE:LGPL$
	** Commercial License Usage
	** Licensees holding valid commercial Qt licenses may use this file in
	** accordance with the commercial license agreement provided with the
	** Software or, alternatively, in accordance with the terms contained in
	** a written agreement between you and The Qt Company. For licensing terms
	** and conditions see https://www.qt.io/terms-conditions. For further
	** information use the contact form at https://www.qt.io/contact-us.
	**
	** GNU Lesser General Public License Usage
	** Alternatively, this file may be used under the terms of the GNU Lesser
	** General Public License version 3 as published by the Free Software
	** Foundation and appearing in the file LICENSE.LGPL3 included in the
	** packaging of this file. Please review the following information to
	** ensure the GNU Lesser General Public License version 3 requirements
	** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
	**
	** GNU General Public License Usage
	** Alternatively, this file may be used under the terms of the GNU
	** General Public License version 2.0 or (at your option) the GNU General
	** Public license version 3 or any later version approved by the KDE Free
	** Qt Foundation. The licenses are as published by the Free Software
	** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
	** included in the packaging of this file. Please review the following
	** information to ensure the GNU General Public License requirements will
	** be met: https://www.gnu.org/licenses/gpl-2.0.html and
	** https://www.gnu.org/licenses/gpl-3.0.html.
	**
	** $QT_END_LICENSE$
	**
	****************************************************************************/
	#include "qgraphicssvgitem.h"

	#if !defined(QT_NO_GRAPHICSVIEW) && !defined(QT_NO_WIDGETS)

	#include "qpainter.h"
	#include "qstyleoption.h"
	#include "qsvgrenderer.h"
	#include "qdebug.h"

	#include "private/qobject_p.h"
	#include "private/qgraphicsitem_p.h"

	QT_BEGIN_NAMESPACE

	class QGraphicsSvgItemPrivate : public QGraphicsItemPrivate
	{
	public:
	Q_DECLARE_PUBLIC(QGraphicsSvgItem)

	QGraphicsSvgItemPrivate()
	: renderer(0), shared(false)
	{
	}

	void init(QGraphicsItem *parent)
	{
	Q_Q(QGraphicsSvgItem);
	q->setParentItem(parent);
	renderer = new QSvgRenderer(q);
	QObject::connect(renderer, SIGNAL(repaintNeeded()),
	q, SLOT(_q_repaintItem()));
	q->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
	q->setMaximumCacheSize(QSize(1024, 768));
	}

	void _q_repaintItem()
	{
	q_func()->update();
	}

	inline void updateDefaultSize()
	{
	QRectF bounds;
	if (elemId.isEmpty()) {
	bounds = QRectF(QPointF(0, 0), renderer->defaultSize());
	} else {
	bounds = renderer->boundsOnElement(elemId);
	}
	if (boundingRect.size() != bounds.size()) {
	q_func()->prepareGeometryChange();
	boundingRect.setSize(bounds.size());
	}
	}

	QSvgRenderer *renderer;
	QRectF boundingRect;
	bool shared;
	QString elemId;
	};

	/*!
	\class QGraphicsSvgItem
	\inmodule QtSvg
	\ingroup graphicsview-api
	\brief The QGraphicsSvgItem class is a QGraphicsItem that can be used to render
	the contents of SVG files.

	\since 4.2

	QGraphicsSvgItem provides a way of rendering SVG files onto QGraphicsView.
	QGraphicsSvgItem can be created by passing the SVG file to be rendered to
	its constructor or by explicit setting a shared QSvgRenderer on it.

	Note that setting QSvgRenderer on a QGraphicsSvgItem doesn't make the item take
	ownership of the renderer, therefore if using setSharedRenderer() method one has
	to make sure that the lifetime of the QSvgRenderer object will be at least as long
	as that of the QGraphicsSvgItem.

	QGraphicsSvgItem provides a way of rendering only parts of the SVG files via
	the setElementId. If setElementId() method is called, only the SVG element
	(and its children) with the passed id will be renderer. This provides a convenient
	way of selectively rendering large SVG files that contain a number of discrete
	elements. For example the following code renders only jokers from a SVG file
	containing a whole card deck:

	\snippet src_svg_qgraphicssvgitem.cpp 0

	Size of the item can be set via direct manipulation of the items
	transformation matrix.

	By default the SVG rendering is cached using QGraphicsItem::DeviceCoordinateCache
	mode to speedup the display of items. Caching can be disabled by passing
	QGraphicsItem::NoCache to the QGraphicsItem::setCacheMode() method.

	\sa QSvgWidget, {Qt SVG C++ Classes}, QGraphicsItem, QGraphicsView
	*/

	/*!
	Constructs a new SVG item with the given \a parent.
	*/
	QGraphicsSvgItem::QGraphicsSvgItem(QGraphicsItem *parent)
	: QGraphicsObject(*new QGraphicsSvgItemPrivate(), 0)
	{
	Q_D(QGraphicsSvgItem);
	d->init(parent);
	}

	/*!
	Constructs a new item with the given \a parent and loads the contents of the
	SVG file with the specified \a fileName.
	*/
	QGraphicsSvgItem::QGraphicsSvgItem(const QString &fileName, QGraphicsItem *parent)
	: QGraphicsObject(*new QGraphicsSvgItemPrivate(), 0)
	{
	Q_D(QGraphicsSvgItem);
	d->init(parent);
	d->renderer->load(fileName);
	d->updateDefaultSize();
	}

	/*!
	Returns the currently use QSvgRenderer.
	*/
	QSvgRenderer *QGraphicsSvgItem::renderer() const
	{
	return d_func()->renderer;
	}


	/*!
	Returns the bounding rectangle of this item.
	*/
	QRectF QGraphicsSvgItem::boundingRect() const
	{
	Q_D(const QGraphicsSvgItem);
	return d->boundingRect;
	}

	/*!
	\internal

	Highlights \a item as selected.

	NOTE: This function is a duplicate of qt_graphicsItem_highlightSelected() in qgraphicsitem.cpp!
	*/
	static void qt_graphicsItem_highlightSelected(
	QGraphicsItem item, QPainter painter, const QStyleOptionGraphicsItem *option)
	{
	const QRectF murect = painter->transform().mapRect(QRectF(0, 0, 1, 1));
	if (qFuzzyIsNull(qMax(murect.width(), murect.height())))
	return;

	const QRectF mbrect = painter->transform().mapRect(item->boundingRect());
	if (qMin(mbrect.width(), mbrect.height()) < qreal(1.0))
	return;

	qreal itemPenWidth;
	switch (item->type()) {
	case QGraphicsEllipseItem::Type:
	itemPenWidth = static_cast<QGraphicsEllipseItem *>(item)->pen().widthF();
	break;
	case QGraphicsPathItem::Type:
	itemPenWidth = static_cast<QGraphicsPathItem *>(item)->pen().widthF();
	break;
	case QGraphicsPolygonItem::Type:
	itemPenWidth = static_cast<QGraphicsPolygonItem *>(item)->pen().widthF();
	break;
	case QGraphicsRectItem::Type:
	itemPenWidth = static_cast<QGraphicsRectItem *>(item)->pen().widthF();
	break;
	case QGraphicsSimpleTextItem::Type:
	itemPenWidth = static_cast<QGraphicsSimpleTextItem *>(item)->pen().widthF();
	break;
	case QGraphicsLineItem::Type:
	itemPenWidth = static_cast<QGraphicsLineItem *>(item)->pen().widthF();
	break;
	default:
	itemPenWidth = 1.0;
	}
	const qreal pad = itemPenWidth / 2;

	const qreal penWidth = 0; // cosmetic pen

	const QColor fgcolor = option->palette.windowText().color();
	const QColor bgcolor( // ensure good contrast against fgcolor
	fgcolor.red() > 127 ? 0 : 255,
	fgcolor.green() > 127 ? 0 : 255,
	fgcolor.blue() > 127 ? 0 : 255);

	painter->setPen(QPen(bgcolor, penWidth, Qt::SolidLine));
	painter->setBrush(Qt::NoBrush);
	painter->drawRect(item->boundingRect().adjusted(pad, pad, -pad, -pad));

	painter->setPen(QPen(option->palette.windowText(), 0, Qt::DashLine));
	painter->setBrush(Qt::NoBrush);
	painter->drawRect(item->boundingRect().adjusted(pad, pad, -pad, -pad));
	}

	/*!
	\reimp
	*/
	void QGraphicsSvgItem::paint(QPainter painter, const QStyleOptionGraphicsItem option,
	QWidget *widget)
	{
	// Q_UNUSED(option);
	Q_UNUSED(widget);

	Q_D(QGraphicsSvgItem);
	if (!d->renderer->isValid())
	return;

	if (d->elemId.isEmpty())
	d->renderer->render(painter, d->boundingRect);
	else
	d->renderer->render(painter, d->elemId, d->boundingRect);

	if (option->state & QStyle::State_Selected)
	qt_graphicsItem_highlightSelected(this, painter, option);
	}

	/*!
	\reimp
	*/
	int QGraphicsSvgItem::type() const
	{
	return Type;
	}

	/*!
	\property QGraphicsSvgItem::maximumCacheSize
	\since 4.6

	This property holds the maximum size of the device coordinate cache
	for this item.
	*/

	/*!
	Sets the maximum device coordinate cache size of the item to \a size.
	If the item is cached using QGraphicsItem::DeviceCoordinateCache mode,
	caching is bypassed if the extension of the item in device coordinates
	is larger than \a size.

	The cache corresponds to the QPixmap which is used to cache the
	results of the rendering.
	Use QPixmapCache::setCacheLimit() to set limitations on the whole cache
	and use setMaximumCacheSize() when setting cache size for individual
	items.

	\sa QGraphicsItem::cacheMode()
	*/
	void QGraphicsSvgItem::setMaximumCacheSize(const QSize &size)
	{
	QGraphicsItem::d_ptr->setExtra(QGraphicsItemPrivate::ExtraMaxDeviceCoordCacheSize, size);
	update();
	}

	/*!
	Returns the current maximum size of the device coordinate cache for this item.
	If the item is cached using QGraphicsItem::DeviceCoordinateCache mode,
	caching is bypassed if the extension of the item in device coordinates
	is larger than the maximum size.

	The default maximum cache size is 1024x768.
	QPixmapCache::cacheLimit() gives the
	cumulative bounds of the whole cache, whereas maximumCacheSize() refers
	to a maximum cache size for this particular item.

	\sa QGraphicsItem::cacheMode()
	*/
	QSize QGraphicsSvgItem::maximumCacheSize() const
	{
	return QGraphicsItem::d_ptr->extra(QGraphicsItemPrivate::ExtraMaxDeviceCoordCacheSize).toSize();
	}

	/*!
	\property QGraphicsSvgItem::elementId
	\since 4.6

	This property holds the element's XML ID.
	*/

	/*!
	Sets the XML ID of the element to \a id.
	*/
	void QGraphicsSvgItem::setElementId(const QString &id)
	{
	Q_D(QGraphicsSvgItem);
	d->elemId = id;
	d->updateDefaultSize();
	update();
	}

	/*!
	Returns the XML ID the element that is currently
	being rendered. Returns an empty string if the whole
	file is being rendered.
	*/
	QString QGraphicsSvgItem::elementId() const
	{
	Q_D(const QGraphicsSvgItem);
	return d->elemId;
	}

	/*!
	Sets \a renderer to be a shared QSvgRenderer on the item. By
	using this method one can share the same QSvgRenderer on a number
	of items. This means that the SVG file will be parsed only once.
	QSvgRenderer passed to this method has to exist for as long as
	this item is used.
	*/
	void QGraphicsSvgItem::setSharedRenderer(QSvgRenderer *renderer)
	{
	Q_D(QGraphicsSvgItem);
	if (!d->shared)
	delete d->renderer;

	d->renderer = renderer;
	d->shared = true;

	d->updateDefaultSize();

	update();
	}

	/*!
	\obsolete

	Use QGraphicsItem::setCacheMode() instead. Passing true to this function is equivalent
	to QGraphicsItem::setCacheMode(QGraphicsItem::DeviceCoordinateCache).
	*/
	void QGraphicsSvgItem::setCachingEnabled(bool caching)
	{
	setCacheMode(caching ? QGraphicsItem::DeviceCoordinateCache : QGraphicsItem::NoCache);
	}

	/*!
	\obsolete

	Use QGraphicsItem::cacheMode() instead.
	*/
	bool QGraphicsSvgItem::isCachingEnabled() const
	{
	return cacheMode() != QGraphicsItem::NoCache;
	}

	QT_END_NAMESPACE

	#include "moc_qgraphicssvgitem.cpp"

	#endif // QT_NO_WIDGETS