summaryrefslogtreecommitdiffstats
path: root/src/svg/qsvghandler_p.h
blob: 68817572226f9d6018a59b9a2141d801414d767b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
/****************************************************************************
**
** Copyright (C) 2010 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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.
**
** 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 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