1/****************************************************************************
2**
3** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
4** Contact: http://www.qt-project.org/legal
5**
6** This file is part of the QtSvg module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
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13** a written agreement between you and Digia. For licensing terms and
14** conditions see http://qt.digia.com/licensing. For further information
15** use the contact form at http://qt.digia.com/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 2.1 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 2.1 requirements
23** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
24**
25** In addition, as a special exception, Digia gives you certain additional
26** rights. These rights are described in the Digia Qt LGPL Exception
27** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
28**
29** GNU General Public License Usage
30** Alternatively, this file may be used under the terms of the GNU
31** General Public License version 3.0 as published by the Free Software
32** Foundation and appearing in the file LICENSE.GPL included in the
33** packaging of this file. Please review the following information to
34** ensure the GNU General Public License version 3.0 requirements will be
35** met: http://www.gnu.org/copyleft/gpl.html.
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37**
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#ifndef QSVGHANDLER_P_H
43#define QSVGHANDLER_P_H
44
45//
46// W A R N I N G
47// -------------
48//
49// This file is not part of the Qt API. It exists purely as an
50// implementation detail. This header file may change from version to
51// version without notice, or even be removed.
52//
53// We mean it.
54//
55
56#include "QtXml/qxmlstream.h"
57
58#ifndef QT_NO_SVG
59
60#include "QtCore/qhash.h"
61#include "QtCore/qstack.h"
62#include "qsvgstyle_p.h"
63#include "private/qcssparser_p.h"
64#include "private/qsvggraphics_p.h"
65
66QT_BEGIN_NAMESPACE
67
68class QSvgNode;
69class QSvgTinyDocument;
70class QSvgHandler;
71class QColor;
72class QSvgStyleSelector;
73class QXmlStreamReader;
74
75struct QSvgCssAttribute
76{
77 QXmlStreamStringRef name;
78 QXmlStreamStringRef value;
79};
80
81class QSvgHandler
82{
83public:
84 enum LengthType {
85 LT_PERCENT,
86 LT_PX,
87 LT_PC,
88 LT_PT,
89 LT_MM,
90 LT_CM,
91 LT_IN,
92 LT_OTHER
93 };
94
95public:
96 QSvgHandler(QIODevice *device);
97 QSvgHandler(const QByteArray &data);
98 QSvgHandler(QXmlStreamReader *const data);
99 ~QSvgHandler();
100
101 QSvgTinyDocument *document() const;
102
103 inline bool ok() const {
104 return document() != 0 && !xml->hasError();
105 }
106
107 inline QString errorString() const { return xml->errorString(); }
108 inline int lineNumber() const { return xml->lineNumber(); }
109
110 void setDefaultCoordinateSystem(LengthType type);
111 LengthType defaultCoordinateSystem() const;
112
113 void pushColor(const QColor &color);
114 void pushColorCopy();
115 void popColor();
116 QColor currentColor() const;
117
118 void setInStyle(bool b);
119 bool inStyle() const;
120
121 QSvgStyleSelector *selector() const;
122
123 void setAnimPeriod(int start, int end);
124 int animationDuration() const;
125
126 void parseCSStoXMLAttrs(QString css, QVector<QSvgCssAttribute> *attributes);
127
128 inline QPen defaultPen() const
129 { return m_defaultPen; }
130
131public:
132 bool startElement(const QString &localName, const QXmlStreamAttributes &attributes);
133 bool endElement(const QStringRef &localName);
134 bool characters(const QStringRef &str);
135 bool processingInstruction(const QString &target, const QString &data);
136
137private:
138 void init();
139
140 QSvgTinyDocument *m_doc;
141 QStack<QSvgNode*> m_nodes;
142
143 QList<QSvgNode*> m_resolveNodes;
144
145 enum CurrentNode
146 {
147 Unknown,
148 Graphics,
149 Style
150 };
151 QStack<CurrentNode> m_skipNodes;
152
153 /*!
154 Follows the depths of elements. The top is current xml:space
155 value that applies for a given element.
156 */
157 QStack<QSvgText::WhitespaceMode> m_whitespaceMode;
158
159 QSvgRefCounter<QSvgStyleProperty> m_style;
160
161 LengthType m_defaultCoords;
162
163 QStack<QColor> m_colorStack;
164 QStack<int> m_colorTagCount;
165
166 bool m_inStyle;
167
168 QSvgStyleSelector *m_selector;
169
170 int m_animEnd;
171
172 QXmlStreamReader *const xml;
173 QCss::Parser m_cssParser;
174 void parse();
175 void resolveGradients(QSvgNode *node);
176
177 QPen m_defaultPen;
178 /**
179 * Whether we own the variable xml, and hence whether
180 * we need to delete it.
181 */
182 const bool m_ownsReader;
183};
184
185QT_END_NAMESPACE
186
187#endif // QT_NO_SVG
188#endif // QSVGHANDLER_P_H
189