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140 lines
3.9 KiB
140 lines
3.9 KiB
/*
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This file is part of Konsole, an X terminal.
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Copyright (C) 2006-7 by Robert Knight <robertknight@gmail.com>
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Rewritten for QT4 by e_k <e_k at users.sourceforge.net>, Copyright (C)2008
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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 Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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 General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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*/
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#ifndef TERMINAL_CHARACTER_DECODER_H
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#define TERMINAL_CHARACTER_DECODER_H
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#include "Character.h"
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class QTextStream;
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namespace Konsole
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{
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/**
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* Base class for terminal character decoders
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*
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* The decoder converts lines of terminal characters which consist of a unicode character, foreground
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* and background colours and other appearance-related properties into text strings.
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*
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* Derived classes may produce either plain text with no other colour or appearance information, or
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* they may produce text which incorporates these additional properties.
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*/
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class TerminalCharacterDecoder
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{
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public:
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virtual ~TerminalCharacterDecoder() {}
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/** Begin decoding characters. The resulting text is appended to @p output. */
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virtual void begin(QTextStream* output) = 0;
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/** End decoding. */
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virtual void end() = 0;
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/**
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* Converts a line of terminal characters with associated properties into a text string
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* and writes the string into an output QTextStream.
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*
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* @param characters An array of characters of length @p count.
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* @param properties Additional properties which affect all characters in the line
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* @param output The output stream which receives the decoded text
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*/
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virtual void decodeLine(const Character* const characters,
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int count,
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LineProperty properties) = 0;
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};
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/**
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* A terminal character decoder which produces plain text, ignoring colours and other appearance-related
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* properties of the original characters.
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*/
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class PlainTextDecoder : public TerminalCharacterDecoder
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{
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public:
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PlainTextDecoder();
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/**
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* Set whether trailing whitespace at the end of lines should be included
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* in the output.
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* Defaults to true.
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*/
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void setTrailingWhitespace(bool enable);
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/**
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* Returns whether trailing whitespace at the end of lines is included
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* in the output.
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*/
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bool trailingWhitespace() const;
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virtual void begin(QTextStream* output);
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virtual void end();
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virtual void decodeLine(const Character* const characters,
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int count,
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LineProperty properties);
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private:
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QTextStream* _output;
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bool _includeTrailingWhitespace;
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};
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/**
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* A terminal character decoder which produces pretty HTML markup
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*/
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class HTMLDecoder : public TerminalCharacterDecoder
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{
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public:
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/**
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* Constructs an HTML decoder using a default black-on-white color scheme.
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*/
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HTMLDecoder();
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/**
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* Sets the colour table which the decoder uses to produce the HTML colour codes in its
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* output
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*/
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void setColorTable( const ColorEntry* table );
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virtual void decodeLine(const Character* const characters,
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int count,
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LineProperty properties);
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virtual void begin(QTextStream* output);
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virtual void end();
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private:
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void openSpan(QString& text , const QString& style);
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void closeSpan(QString& text);
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QTextStream* _output;
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const ColorEntry* _colorTable;
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bool _innerSpanOpen;
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quint8 _lastRendition;
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CharacterColor _lastForeColor;
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CharacterColor _lastBackColor;
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};
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}
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#endif
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