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/*
This file is part of Konsole, an X terminal.
Copyright 2007-2008 by Robert Knight <robertknight@gmail.com>
Copyright 1997,1998 by Lars Doelle <lars.doelle@on-line.de>
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.
*/
#ifndef VT102EMULATION_H
#define VT102EMULATION_H
// Standard Library
#include <cstdio>
// Qt
#include <QKeyEvent>
#include <QHash>
#include <QTimer>
// Konsole
#include "Emulation.h"
#include "Screen.h"
#define MODE_AppScreen (MODES_SCREEN+0) // Mode #1
#define MODE_AppCuKeys (MODES_SCREEN+1) // Application cursor keys (DECCKM)
#define MODE_AppKeyPad (MODES_SCREEN+2) //
#define MODE_Mouse1000 (MODES_SCREEN+3) // Send mouse X,Y position on press and release
#define MODE_Mouse1001 (MODES_SCREEN+4) // Use Hilight mouse tracking
#define MODE_Mouse1002 (MODES_SCREEN+5) // Use cell motion mouse tracking
#define MODE_Mouse1003 (MODES_SCREEN+6) // Use all motion mouse tracking
#define MODE_Mouse1005 (MODES_SCREEN+7) // Xterm-style extended coordinates
#define MODE_Mouse1006 (MODES_SCREEN+8) // 2nd Xterm-style extended coordinates
#define MODE_Mouse1015 (MODES_SCREEN+9) // Urxvt-style extended coordinates
#define MODE_Ansi (MODES_SCREEN+10) // Use US Ascii for character sets G0-G3 (DECANM)
#define MODE_132Columns (MODES_SCREEN+11) // 80 <-> 132 column mode switch (DECCOLM)
#define MODE_Allow132Columns (MODES_SCREEN+12) // Allow DECCOLM mode
#define MODE_BracketedPaste (MODES_SCREEN+13) // Xterm-style bracketed paste mode
#define MODE_total (MODES_SCREEN+14)
namespace Konsole
{
struct CharCodes
{
// coding info
char charset[4]; //
int cu_cs; // actual charset.
bool graphic; // Some VT100 tricks
bool pound ; // Some VT100 tricks
bool sa_graphic; // saved graphic
bool sa_pound; // saved pound
};
/**
* Provides an xterm compatible terminal emulation based on the DEC VT102 terminal.
* A full description of this terminal can be found at http://vt100.net/docs/vt102-ug/
*
* In addition, various additional xterm escape sequences are supported to provide
* features such as mouse input handling.
* See http://rtfm.etla.org/xterm/ctlseq.html for a description of xterm's escape
* sequences.
*
*/
class Vt102Emulation : public Emulation
{
Q_OBJECT
public:
/** Constructs a new emulation */
Vt102Emulation();
~Vt102Emulation() override;
// reimplemented from Emulation
void clearEntireScreen() override;
void reset() override;
char eraseChar() const override;
public slots:
// reimplemented from Emulation
void sendString(const char*,int length = -1) override;
void sendText(const QString& text) override;
void sendKeyEvent(QKeyEvent*, bool fromPaste) override;
void sendMouseEvent(int buttons, int column, int line, int eventType) override;
virtual void focusLost();
virtual void focusGained();
protected:
// reimplemented from Emulation
void setMode(int mode) override;
void resetMode(int mode) override;
void receiveChar(wchar_t cc) override;
private slots:
//causes changeTitle() to be emitted for each (int,QString) pair in pendingTitleUpdates
//used to buffer multiple title updates
void updateTitle();
private:
wchar_t applyCharset(wchar_t c);
void setCharset(int n, int cs);
void useCharset(int n);
void setAndUseCharset(int n, int cs);
void saveCursor();
void restoreCursor();
void resetCharset(int scrno);
QKeyEvent * remapKeyModifiersForMac(QKeyEvent *event);
void setMargins(int top, int bottom);
//set margins for all screens back to their defaults
void setDefaultMargins();
// returns true if 'mode' is set or false otherwise
bool getMode (int mode);
// saves the current boolean value of 'mode'
void saveMode (int mode);
// restores the boolean value of 'mode'
void restoreMode(int mode);
// resets all modes
// (except MODE_Allow132Columns)
void resetModes();
void resetTokenizer();
#define MAX_TOKEN_LENGTH 256 // Max length of tokens (e.g. window title)
void addToCurrentToken(wchar_t cc);
wchar_t tokenBuffer[MAX_TOKEN_LENGTH]; //FIXME: overflow?
int tokenBufferPos;
#define MAXARGS 15
void addDigit(int dig);
void addArgument();
int argv[MAXARGS];
int argc;
void initTokenizer();
int prevCC;
// Set of flags for each of the ASCII characters which indicates
// what category they fall into (printable character, control, digit etc.)
// for the purposes of decoding terminal output
int charClass[256];
void reportDecodingError();
void processToken(int code, wchar_t p, int q);
void processWindowAttributeChange();
void requestWindowAttribute(int);
void reportTerminalType();
void reportSecondaryAttributes();
void reportStatus();
void reportAnswerBack();
void reportCursorPosition();
void reportTerminalParms(int p);
void onScrollLock();
void scrollLock(const bool lock);
// clears the screen and resizes it to the specified
// number of columns
void clearScreenAndSetColumns(int columnCount);
CharCodes _charset[2];
class TerminalState
{
public:
// Initializes all modes to false
TerminalState()
{ memset(&mode,false,MODE_total * sizeof(bool)); }
bool mode[MODE_total];
};
TerminalState _currentModes;
TerminalState _savedModes;
//hash table and timer for buffering calls to the session instance
//to update the name of the session
//or window title.
//these calls occur when certain escape sequences are seen in the
//output from the terminal
QHash<int,QString> _pendingTitleUpdates;
QTimer* _titleUpdateTimer;
bool _reportFocusEvents;
};
}
#endif // VT102EMULATION_H
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