/**************************************************************************** | |
** | |
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). | |
** All rights reserved. | |
** Contact: Nokia Corporation (qt-info@nokia.com) | |
** | |
** This file is part of the QtGui module of the Qt Toolkit. | |
** | |
** $QT_BEGIN_LICENSE:LGPL$ | |
** GNU Lesser General Public License Usage | |
** 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 | |
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** 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: | |
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** | |
** Other Usage | |
** Alternatively, this file may be used in accordance with the terms and | |
** conditions contained in a signed written agreement between you and Nokia. | |
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** $QT_END_LICENSE$ | |
** | |
****************************************************************************/ | |
#ifndef QTEXTHTMLPARSER_P_H | |
#define QTEXTHTMLPARSER_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/qvector.h" | |
#include "QtGui/qbrush.h" | |
#include "QtGui/qcolor.h" | |
#include "QtGui/qfont.h" | |
#include "QtGui/qtextdocument.h" | |
#include "QtGui/qtextcursor.h" | |
#include "private/qtextformat_p.h" | |
#include "private/qtextdocument_p.h" | |
#include "private/qcssparser_p.h" | |
#ifndef QT_NO_TEXTHTMLPARSER | |
QT_BEGIN_NAMESPACE | |
enum QTextHTMLElements { | |
Html_unknown = -1, | |
Html_qt = 0, | |
Html_body, | |
Html_a, | |
Html_em, | |
Html_i, | |
Html_big, | |
Html_small, | |
Html_strong, | |
Html_b, | |
Html_cite, | |
Html_address, | |
Html_var, | |
Html_dfn, | |
Html_h1, | |
Html_h2, | |
Html_h3, | |
Html_h4, | |
Html_h5, | |
Html_h6, | |
Html_p, | |
Html_center, | |
Html_font, | |
Html_ul, | |
Html_ol, | |
Html_li, | |
Html_code, | |
Html_tt, | |
Html_kbd, | |
Html_samp, | |
Html_img, | |
Html_br, | |
Html_hr, | |
Html_sub, | |
Html_sup, | |
Html_pre, | |
Html_blockquote, | |
Html_head, | |
Html_div, | |
Html_span, | |
Html_dl, | |
Html_dt, | |
Html_dd, | |
Html_u, | |
Html_s, | |
Html_nobr, | |
// tables | |
Html_table, | |
Html_tr, | |
Html_td, | |
Html_th, | |
Html_thead, | |
Html_tbody, | |
Html_tfoot, | |
Html_caption, | |
// misc... | |
Html_html, | |
Html_style, | |
Html_title, | |
Html_meta, | |
Html_link, | |
Html_script, | |
Html_NumElements | |
}; | |
struct QTextHtmlElement | |
{ | |
const char *name; | |
QTextHTMLElements id; | |
enum DisplayMode { DisplayBlock, DisplayInline, DisplayTable, DisplayNone } displayMode; | |
}; | |
class QTextHtmlParser; | |
struct QTextHtmlParserNode { | |
enum WhiteSpaceMode { | |
WhiteSpaceNormal, | |
WhiteSpacePre, | |
WhiteSpaceNoWrap, | |
WhiteSpacePreWrap, | |
WhiteSpaceModeUndefined = -1 | |
}; | |
QTextHtmlParserNode(); | |
QString tag; | |
QString text; | |
QStringList attributes; | |
int parent; | |
QVector<int> children; | |
QTextHTMLElements id; | |
QTextCharFormat charFormat; | |
QTextBlockFormat blockFormat; | |
uint cssFloat : 2; | |
uint hasOwnListStyle : 1; | |
uint hasCssListIndent : 1; | |
uint isEmptyParagraph : 1; | |
uint isTextFrame : 1; | |
uint isRootFrame : 1; | |
uint displayMode : 3; // QTextHtmlElement::DisplayMode | |
uint hasHref : 1; | |
QTextListFormat::Style listStyle; | |
QString imageName; | |
qreal imageWidth; | |
qreal imageHeight; | |
QTextLength width; | |
QTextLength height; | |
qreal tableBorder; | |
int tableCellRowSpan; | |
int tableCellColSpan; | |
qreal tableCellSpacing; | |
qreal tableCellPadding; | |
QBrush borderBrush; | |
QTextFrameFormat::BorderStyle borderStyle; | |
int userState; | |
int cssListIndent; | |
WhiteSpaceMode wsm; | |
inline bool isListStart() const | |
{ return id == Html_ol || id == Html_ul; } | |
inline bool isTableCell() const | |
{ return id == Html_td || id == Html_th; } | |
inline bool isBlock() const | |
{ return displayMode == QTextHtmlElement::DisplayBlock; } | |
inline bool isNotSelfNesting() const | |
{ return id == Html_p || id == Html_li; } | |
inline bool allowedInContext(int parentId) const | |
{ | |
switch (id) { | |
case Html_dd: | |
case Html_dt: return (parentId == Html_dl); | |
case Html_tr: return (parentId == Html_table | |
|| parentId == Html_thead | |
|| parentId == Html_tbody | |
|| parentId == Html_tfoot | |
); | |
case Html_th: | |
case Html_td: return (parentId == Html_tr); | |
case Html_thead: | |
case Html_tbody: | |
case Html_tfoot: return (parentId == Html_table); | |
case Html_caption: return (parentId == Html_table); | |
case Html_body: return parentId != Html_head; | |
default: break; | |
} | |
return true; | |
} | |
inline bool mayNotHaveChildren() const | |
{ return id == Html_img || id == Html_hr || id == Html_br || id == Html_meta; } | |
void initializeProperties(const QTextHtmlParserNode *parent, const QTextHtmlParser *parser); | |
inline int uncollapsedMargin(int mar) const { return margin[mar]; } | |
bool isNestedList(const QTextHtmlParser *parser) const; | |
void parseStyleAttribute(const QString &value, const QTextDocument *resourceProvider); | |
#ifndef QT_NO_CSSPARSER | |
void applyCssDeclarations(const QVector<QCss::Declaration> &declarations, const QTextDocument *resourceProvider); | |
void setListStyle(const QVector<QCss::Value> &cssValues); | |
#endif | |
void applyBackgroundImage(const QString &url, const QTextDocument *resourceProvider); | |
bool hasOnlyWhitespace() const; | |
int margin[4]; | |
int padding[4]; | |
friend class QTextHtmlParser; | |
}; | |
Q_DECLARE_TYPEINFO(QTextHtmlParserNode, Q_MOVABLE_TYPE); | |
class QTextHtmlParser | |
{ | |
public: | |
enum Margin { | |
MarginTop, | |
MarginRight, | |
MarginBottom, | |
MarginLeft | |
}; | |
inline const QTextHtmlParserNode &at(int i) const { return nodes.at(i); } | |
inline QTextHtmlParserNode &operator[](int i) { return nodes[i]; } | |
inline int count() const { return nodes.count(); } | |
inline int last() const { return nodes.count()-1; } | |
int depth(int i) const; | |
int topMargin(int i) const; | |
int bottomMargin(int i) const; | |
inline int leftMargin(int i) const { return margin(i, MarginLeft); } | |
inline int rightMargin(int i) const { return margin(i, MarginRight); } | |
inline int topPadding(int i) const { return at(i).padding[MarginTop]; } | |
inline int bottomPadding(int i) const { return at(i).padding[MarginBottom]; } | |
inline int leftPadding(int i) const { return at(i).padding[MarginLeft]; } | |
inline int rightPadding(int i) const { return at(i).padding[MarginRight]; } | |
void dumpHtml(); | |
void parse(const QString &text, const QTextDocument *resourceProvider); | |
static int lookupElement(const QString &element); | |
protected: | |
QTextHtmlParserNode *newNode(int parent); | |
QVector<QTextHtmlParserNode> nodes; | |
QString txt; | |
int pos, len; | |
bool textEditMode; | |
void parse(); | |
void parseTag(); | |
void parseCloseTag(); | |
void parseExclamationTag(); | |
QString parseEntity(); | |
QString parseWord(); | |
QTextHtmlParserNode *resolveParent(); | |
void resolveNode(); | |
QStringList parseAttributes(); | |
void applyAttributes(const QStringList &attributes); | |
void eatSpace(); | |
inline bool hasPrefix(QChar c, int lookahead = 0) const | |
{return pos + lookahead < len && txt.at(pos) == c; } | |
int margin(int i, int mar) const; | |
bool nodeIsChildOf(int i, QTextHTMLElements id) const; | |
#ifndef QT_NO_CSSPARSER | |
QVector<QCss::Declaration> declarationsForNode(int node) const; | |
void resolveStyleSheetImports(const QCss::StyleSheet &sheet); | |
void importStyleSheet(const QString &href); | |
struct ExternalStyleSheet | |
{ | |
inline ExternalStyleSheet() {} | |
inline ExternalStyleSheet(const QString &_url, const QCss::StyleSheet &_sheet) | |
: url(_url), sheet(_sheet) {} | |
QString url; | |
QCss::StyleSheet sheet; | |
}; | |
QVector<ExternalStyleSheet> externalStyleSheets; | |
QVector<QCss::StyleSheet> inlineStyleSheets; | |
#endif | |
const QTextDocument *resourceProvider; | |
}; | |
QT_END_NAMESPACE | |
#endif // QT_NO_TEXTHTMLPARSER | |
#endif // QTEXTHTMLPARSER_P_H |