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96 lines
5.3 KiB
C++
96 lines
5.3 KiB
C++
/*******************************************************************************
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* util/HandleRichText.h *
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* *
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* Copyright (c) 2010 Thomas Kister <retroshare.project@gmail.com> *
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* *
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* This program is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU Affero General Public License as *
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* published by the Free Software Foundation, either version 3 of the *
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* License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Affero General Public License for more details. *
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* *
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* You should have received a copy of the GNU Affero General Public License *
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* along with this program. If not, see <https://www.gnu.org/licenses/>. *
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* *
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*******************************************************************************/
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#include <gui/common/RSTextBrowser.h>
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/**
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* This file provides helper functions and functors for translating data from/to
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* rich text format and HTML. Its main goal is to facilitate decoding of chat
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* messages, particularly embedding special information into HTML tags.
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*/
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#ifndef HANDLE_RICH_TEXT_H_
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#define HANDLE_RICH_TEXT_H_
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/* Flags for RsHtml::formatText */
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#define RSHTML_FORMATTEXT_EMBED_SMILEYS 0x0001//1
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#define RSHTML_FORMATTEXT_EMBED_LINKS 0x0002//2
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#define RSHTML_FORMATTEXT_OPTIMIZE 0x0004//4
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#define RSHTML_FORMATTEXT_REPLACE_LINKS 0x0008//8
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#define RSHTML_FORMATTEXT_REMOVE_COLOR 0x0010//16
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#define RSHTML_FORMATTEXT_FIX_COLORS 0x0020//32 /* Make text readable */
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#define RSHTML_FORMATTEXT_REMOVE_FONT_WEIGHT 0x0040//64 /* Remove bold */
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#define RSHTML_FORMATTEXT_REMOVE_FONT_STYLE 0x0080//128 /* Remove italics */
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#define RSHTML_FORMATTEXT_REMOVE_FONT_FAMILY 0x0100//256
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#define RSHTML_FORMATTEXT_REMOVE_FONT_SIZE 0x0200//512
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#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)
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#define RSHTML_FORMATTEXT_CLEANSTYLE (RSHTML_FORMATTEXT_REMOVE_FONT | RSHTML_FORMATTEXT_REMOVE_COLOR)
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#define RSHTML_FORMATTEXT_NO_EMBED 0x0400//1024
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#define RSHTML_FORMATTEXT_USE_CMARK 0x0800//2048
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/* Flags for RsHtml::optimizeHtml */
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#define RSHTML_OPTIMIZEHTML_MASK (RSHTML_FORMATTEXT_CLEANSTYLE | RSHTML_FORMATTEXT_FIX_COLORS | RSHTML_FORMATTEXT_OPTIMIZE)
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class QTextEdit;
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class QTextDocument;
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class QDomDocument;
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class QDomElement;
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class EmbedInHtml;
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class RetroShareLink;
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class QTextCursor;
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class RsHtml
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{
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public:
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RsHtml();
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static void initEmoticons(const QHash<QString, QPair<QVector<QString>, QHash<QString, QString> > > &hash);
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QString formatText(QTextDocument *textDocument, const QString &text, ulong flag, const QColor &backgroundColor = Qt::white, qreal desiredContrast = 1.0, int desiredMinimumFontSize = 10);
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static bool findAnchors(const QString &text, QStringList& urls);
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static void optimizeHtml(QTextEdit *textEdit, QString &text, unsigned int flag = 0);
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static void optimizeHtml(QString &text, unsigned int flag = 0, const QColor &backgroundColor = Qt::white, qreal desiredContrast = 1.0, int desiredMinimumFontSize = 10);
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static QString toHtml(QString text, bool realHtml = true);
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static bool makeEmbeddedImage(const QString &fileName, QString &embeddedImage, const int maxPixels, const int maxBytes = -1);
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static bool makeEmbeddedImage(const QImage &originalImage, QString &embeddedImage, const int maxPixels, const int maxBytes = -1);
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static QString plainText(const QString &text);
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static QString plainText(const std::string &text);
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static QString makeQuotedText(RSTextBrowser* browser);
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static void insertSpoilerText(QTextCursor cursor);
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static void findBestColor(QString &val, const QColor &backgroundColor = Qt::white, qreal desiredContrast = 1.0);
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protected:
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void embedHtml(QTextDocument *textDocument, QDomDocument &doc, QDomElement ¤tElement, EmbedInHtml& embedInfos, ulong flag);
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void replaceAnchorWithImg(QDomDocument& doc, QDomElement &element, QTextDocument *textDocument, const RetroShareLink &link);
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void filterEmbeddedImages(QDomDocument &doc, QDomElement ¤tElement);
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virtual bool canReplaceAnchor(QDomDocument &doc, QDomElement &element, const RetroShareLink &link);
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virtual void anchorTextForImg(QDomDocument &doc, QDomElement &element, const RetroShareLink &link, QString &text);
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virtual void anchorStylesheetForImg(QDomDocument &doc, QDomElement &element, const RetroShareLink &link, QString &styleSheet);
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private:
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int indexInWithValidation(QRegExp &rx, const QString &text, EmbedInHtml &embedInfos, int pos = 0);
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};
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#endif // HANDLE_RICH_TEXT_H_
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