src/svg/qsvghandler_p.h
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/svg/qsvghandler_p.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,188 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSvg module 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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 "QtXml/qxmlstream.h"
+
+#ifndef QT_NO_SVG
+
+#include "QtCore/qhash.h"
+#include "QtCore/qstack.h"
+#include "qsvgstyle_p.h"
+#include "private/qcssparser_p.h"
+#include "private/qsvggraphics_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QSvgNode;
+class QSvgTinyDocument;
+class QSvgHandler;
+class QColor;
+class QSvgStyleSelector;
+class QXmlStreamReader;
+
+struct QSvgCssAttribute
+{
+    QXmlStreamStringRef name;
+    QXmlStreamStringRef value;
+};
+
+class 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();
+
+    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;
+
+    void setInStyle(bool b);
+    bool inStyle() const;
+
+    QSvgStyleSelector *selector() const;
+
+    void setAnimPeriod(int start, int end);
+    int animationDuration() const;
+
+    void parseCSStoXMLAttrs(QString css, QVector<QSvgCssAttribute> *attributes);
+
+    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;
+
+    bool m_inStyle;
+
+    QSvgStyleSelector *m_selector;
+
+    int m_animEnd;
+
+    QXmlStreamReader *const xml;
+    QCss::Parser m_cssParser;
+    void parse();
+    void resolveGradients(QSvgNode *node);
+
+    QPen m_defaultPen;
+    /**
+     * Whether we own the variable xml, and hence whether
+     * we need to delete it.
+     */
+    const bool m_ownsReader;
+};
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_SVG
+#endif // QSVGHANDLER_P_H