RetroShare/retroshare-gui/src/util/HandleRichText.h
2013-07-01 20:35:07 +00:00

85 lines
4.0 KiB
C++

/****************************************************************
* This file is distributed under the following license:
*
* Copyright (c) 2010, Thomas Kister
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
****************************************************************/
/**
* This file provides helper functions and functors for translating data from/to
* rich text format and HTML. Its main goal is to facilitate decoding of chat
* messages, particularly embedding special information into HTML tags.
*/
#ifndef HANDLE_RICH_TEXT_H_
#define HANDLE_RICH_TEXT_H_
/* Flags for RsHtml::formatText */
#define RSHTML_FORMATTEXT_EMBED_SMILEYS 1
#define RSHTML_FORMATTEXT_EMBED_LINKS 2
#define RSHTML_FORMATTEXT_OPTIMIZE 4
#define RSHTML_FORMATTEXT_REPLACE_LINKS 8
#define RSHTML_FORMATTEXT_REMOVE_COLOR 16
#define RSHTML_FORMATTEXT_FIX_COLORS 32 /* Make text readable */
#define RSHTML_FORMATTEXT_REMOVE_FONT_WEIGHT 64 /* Remove bold */
#define RSHTML_FORMATTEXT_REMOVE_FONT_STYLE 128 /* Remove italics */
#define RSHTML_FORMATTEXT_REMOVE_FONT_FAMILY 256
#define RSHTML_FORMATTEXT_REMOVE_FONT_SIZE 512
#define RSHTML_FORMATTEXT_REMOVE_FONT (RSHTML_FORMATTEXT_REMOVE_FONT_WEIGHT | RSHTML_FORMATTEXT_REMOVE_FONT_STYLE | RSHTML_FORMATTEXT_REMOVE_FONT_FAMILY | RSHTML_FORMATTEXT_REMOVE_FONT_SIZE)
#define RSHTML_FORMATTEXT_CLEANSTYLE (RSHTML_FORMATTEXT_REMOVE_FONT | RSHTML_FORMATTEXT_REMOVE_COLOR)
/* Flags for RsHtml::optimizeHtml */
#define RSHTML_OPTIMIZEHTML_MASK (RSHTML_FORMATTEXT_CLEANSTYLE | RSHTML_FORMATTEXT_FIX_COLORS | RSHTML_FORMATTEXT_OPTIMIZE)
class QTextEdit;
class QTextDocument;
class QDomDocument;
class QDomElement;
class EmbedInHtml;
class RetroShareLink;
class RsHtml
{
public:
RsHtml();
static void initEmoticons(const QHash< QString, QString >& hash);
QString formatText(QTextDocument *textDocument, const QString &text, ulong flag, const QColor &backgroundColor = Qt::white, qreal desiredContrast = 1.0);
static bool findAnchors(const QString &text, QStringList& urls);
static void optimizeHtml(QTextEdit *textEdit, QString &text, unsigned int flag = 0);
static void optimizeHtml(QString &text, unsigned int flag = 0, const QColor &backgroundColor = Qt::white, qreal desiredContrast = 1.0);
static QString toHtml(QString text, bool realHtml = true);
static bool makeEmbeddedImage(const QString &fileName, QString &embeddedImage, const int maxPixels);
static bool makeEmbeddedImage(const QImage &originalImage, QString &embeddedImage, const int maxPixels);
static QString plainText(const QString &text);
static QString plainText(const std::string &text);
protected:
void embedHtml(QTextDocument *textDocument, QDomDocument &doc, QDomElement &currentElement, EmbedInHtml& embedInfos, ulong flag);
void replaceAnchorWithImg(QDomDocument& doc, QDomElement &element, QTextDocument *textDocument, const RetroShareLink &link);
virtual bool canReplaceAnchor(QDomDocument &doc, QDomElement &element, const RetroShareLink &link);
virtual void anchorTextForImg(QDomDocument &doc, QDomElement &element, const RetroShareLink &link, QString &text);
virtual void anchorStylesheetForImg(QDomDocument &doc, QDomElement &element, const RetroShareLink &link, QString &styleSheet);
};
#endif // HANDLE_RICH_TEXT_H_