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/****************************************************************************
**
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QSVGHANDLER_P_H
#define QSVGHANDLER_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "QtCore/qxmlstream.h"
#include "QtCore/qhash.h"
#include "QtCore/qstack.h"
#include <QtCore/QLoggingCategory>
#include "qsvgstyle_p.h"
#include "private/qcssparser_p.h"
#include "qsvggraphics_p.h"
#include "qtsvgglobal_p.h"
QT_BEGIN_NAMESPACE
class QSvgNode;
class QSvgTinyDocument;
class QSvgHandler;
class QColor;
class QSvgStyleSelector;
class QXmlStreamReader;
#ifndef QT_NO_CSSPARSER
struct QSvgCssAttribute
{
QXmlStreamStringRef name;
QXmlStreamStringRef value;
};
#endif
class Q_SVG_PRIVATE_EXPORT QSvgHandler
{
public:
enum LengthType {
LT_PERCENT,
LT_PX,
LT_PC,
LT_PT,
LT_MM,
LT_CM,
LT_IN,
LT_OTHER
};
public:
QSvgHandler(QIODevice *device);
QSvgHandler(const QByteArray &data);
QSvgHandler(QXmlStreamReader *const data);
~QSvgHandler();
QIODevice *device() const;
QSvgTinyDocument *document() const;
inline bool ok() const {
return document() != 0 && !xml->hasError();
}
inline QString errorString() const { return xml->errorString(); }
inline int lineNumber() const { return xml->lineNumber(); }
void setDefaultCoordinateSystem(LengthType type);
LengthType defaultCoordinateSystem() const;
void pushColor(const QColor &color);
void pushColorCopy();
void popColor();
QColor currentColor() const;
#ifndef QT_NO_CSSPARSER
void setInStyle(bool b);
bool inStyle() const;
QSvgStyleSelector *selector() const;
#endif
void setAnimPeriod(int start, int end);
int animationDuration() const;
#ifndef QT_NO_CSSPARSER
void parseCSStoXMLAttrs(const QString &css, QVector<QSvgCssAttribute> *attributes);
#endif
inline QPen defaultPen() const
{ return m_defaultPen; }
public:
bool startElement(const QString &localName, const QXmlStreamAttributes &attributes);
bool endElement(const QStringRef &localName);
bool characters(const QStringRef &str);
bool processingInstruction(const QString &target, const QString &data);
private:
void init();
QSvgTinyDocument *m_doc;
QStack<QSvgNode*> m_nodes;
QList<QSvgNode*> m_resolveNodes;
enum CurrentNode
{
Unknown,
Graphics,
Style
};
QStack<CurrentNode> m_skipNodes;
/*!
Follows the depths of elements. The top is current xml:space
value that applies for a given element.
*/
QStack<QSvgText::WhitespaceMode> m_whitespaceMode;
QSvgRefCounter<QSvgStyleProperty> m_style;
LengthType m_defaultCoords;
QStack<QColor> m_colorStack;
QStack<int> m_colorTagCount;
int m_animEnd;
QXmlStreamReader *const xml;
#ifndef QT_NO_CSSPARSER
bool m_inStyle;
QSvgStyleSelector *m_selector;
QCss::Parser m_cssParser;
#endif
void parse();
void resolveGradients(QSvgNode *node);
void resolveNodes();
QPen m_defaultPen;
/**
* Whether we own the variable xml, and hence whether
* we need to delete it.
*/
const bool m_ownsReader;
};
Q_DECLARE_LOGGING_CATEGORY(lcSvgHandler)
QT_END_NAMESPACE
#endif // QSVGHANDLER_P_H
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