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/****************************************************************************
**
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtGui 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 QTEXTMARKDOWNIMPORTER_H
#define QTEXTMARKDOWNIMPORTER_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 <QtGui/qfont.h>
#include <QtGui/qtguiglobal.h>
#include <QtGui/qpalette.h>
#include <QtGui/qtextlist.h>
#include <QtCore/qstack.h>
#include "../../3rdparty/md4c/md4c.h"
QT_BEGIN_NAMESPACE
class QTextCursor;
class QTextDocument;
class QTextTable;
class Q_GUI_EXPORT QTextMarkdownImporter
{
public:
enum Feature {
FeatureCollapseWhitespace = MD_FLAG_COLLAPSEWHITESPACE,
FeaturePermissiveATXHeaders = MD_FLAG_PERMISSIVEATXHEADERS,
FeaturePermissiveURLAutoLinks = MD_FLAG_PERMISSIVEURLAUTOLINKS,
FeaturePermissiveMailAutoLinks = MD_FLAG_PERMISSIVEEMAILAUTOLINKS,
FeatureNoIndentedCodeBlocks = MD_FLAG_NOINDENTEDCODEBLOCKS,
FeatureNoHTMLBlocks = MD_FLAG_NOHTMLBLOCKS,
FeatureNoHTMLSpans = MD_FLAG_NOHTMLSPANS,
FeatureTables = MD_FLAG_TABLES,
FeatureStrikeThrough = MD_FLAG_STRIKETHROUGH,
FeaturePermissiveWWWAutoLinks = MD_FLAG_PERMISSIVEWWWAUTOLINKS,
FeatureTasklists = MD_FLAG_TASKLISTS,
// composite flags
FeaturePermissiveAutoLinks = MD_FLAG_PERMISSIVEAUTOLINKS,
FeatureNoHTML = MD_FLAG_NOHTML,
DialectCommonMark = MD_DIALECT_COMMONMARK,
DialectGitHub = MD_DIALECT_GITHUB
};
Q_DECLARE_FLAGS(Features, Feature)
QTextMarkdownImporter(Features features);
void import(QTextDocument *doc, const QString &markdown);
public:
// MD4C callbacks
int cbEnterBlock(MD_BLOCKTYPE type, void* detail);
int cbLeaveBlock(MD_BLOCKTYPE type, void* detail);
int cbEnterSpan(MD_SPANTYPE type, void* detail);
int cbLeaveSpan(MD_SPANTYPE type, void* detail);
int cbText(MD_TEXTTYPE type, const MD_CHAR* text, MD_SIZE size);
private:
QTextDocument *m_doc = nullptr;
QTextCursor *m_cursor = nullptr;
QTextTable *m_currentTable = nullptr; // because m_cursor->currentTable() doesn't work
QString m_htmlAccumulator;
QVector<int> m_nonEmptyTableCells; // in the current row
QStack<QTextList *> m_listStack;
QStack<QTextCharFormat> m_spanFormatStack;
QFont m_monoFont;
QPalette m_palette;
int m_htmlTagDepth = 0;
int m_tableColumnCount = 0;
int m_tableRowCount = 0;
int m_tableCol = -1; // because relative cell movements (e.g. m_cursor->movePosition(QTextCursor::NextCell)) don't work
Features m_features;
MD_BLOCKTYPE m_blockType = MD_BLOCK_DOC;
bool m_emptyList = false; // true when the last thing we did was insertList
bool m_imageSpan = false;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QTextMarkdownImporter::Features)
QT_END_NAMESPACE
#endif // QTEXTMARKDOWNIMPORTER_H
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