textarea.h

ezxterm for motorola rokr e2

/***************************************************************************
 *   Copyright (C) 2007 by Motorola Commnunity around the World            *
 *   [e-mail]                                               *
 *                                                                         *
 *   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.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#ifndef TEXTAREA_H
#define TEXTAREA_H
#include <qobject.h>
#include <qframe.h>
#include <qcstring.h>
#include <qpen.h>
#include <qstringlist.h>
#include <qthread.h>
#include <qpainter.h>
#include <qfontmanager_qws.h>
#include <qfontdatabase.h>
#include <qdir.h>
#include <qdict.h>
#include <sys/ioctl.h>
#define ANSI_ATTR_BOLD 0x1
#define ANSI_ATTR_UNDERLINED 0x2
#define ANSI_ATTR_BLINK 0x4
#define ANSI_ATTR_INVERSE 0x8
#define ANSI_ATTR_INVISIBLE 0x10

#define ANSI_CHANGED_ATTRS 0x1
#define ANSI_CHANGED_POSITION 0x2

#define ESC_CHAR 0x1b

#define TAB_SIZE 8

typedef struct {
	QPen pen;
	QColor bgColor;
	QColor textBgColor;
	uchar attrs;
} text_attrs;

typedef struct {
	ulong hash;
	text_attrs *attrs;
} attrs_applier;

class TextArea: public QFrame
{
	Q_OBJECT
public:
	TextArea(QWidget *parent = 0, const char *name = 0);
	~TextArea();

	void back();
	void newline();
	void appendChar(const QChar &ch);
	void appendText(const QByteArray &text, uint offset = 0, bool new_call = true);
	void scroll(int delta = 2);
	void home();
	void getSize(struct winsize *ws);
protected:
	virtual void drawContents(QPainter *painter);
	virtual void resizeEvent(QResizeEvent *event);
signals:
	void configured();
private:
	enum EraseType {EraseAll = 0, EraseToCurrent, EraseToEnd};
	uint drawText(QPixmap *pix, const QPoint &where, const QString &s);
	void showLine(QPixmap *pix, const QPoint &where, uint width, QPaintDevice *dev = 0);
	void renderText(int row, const QPoint &where, const QString &s);
	void renderChar(uint r, uint c);
	void renderLine(uint r, uint s, uint e, const QPoint &wh);
	void pushLine();
	QPoint lineCoord(const QPoint &c);
	void moveChars(uint r, uint from, uint cnt, uint to);
	void eraseLine(uint row, EraseType type, const QPoint &crd);
	void eraseLines(uint from, uint to);
	void erase(const QRect &rect, QPaintDevice *p = 0);
	
	QStringList ansiParseArgs();
	void ansiSetAttrs(); 
	void ansiGo(uint direction);
	void ansiEraseLine();
	void ansiEraseChars();
	void ansiInsertChars();
	void ansiEraseScreen();
	void ansiSetMode();
	void ansiResetMode();
	void ansiProcess(char ch);

	int insertChar(char ch);
	int getX();
	int getY();
	int getX(uint r, uint c);
	int getY(uint r, uint c);
	void tab();
	bool newlineShift();
	void showTextBlock(uint from, uint to, uint diff);
	void go(uint r, uint c);

	uint xsize;
	uint ysize;

	uint row, col, topRow, fakeTopRow;
	QPoint crd, stcrd;
	QList<QPixmap> lines;

	QFont font, defFont;
	QFontMetrics *metrics;
	
	bool focus;

	QPen defPen;
	text_attrs defAttrs, curAttrs, newAttrs;

	QMutex mutex;

	typedef enum {ESEQ_NONE=0, ESEQ_ESC, ESEQ_ANSI_STARTED, ESEQ_ANSI_DONE, ESEQ_STUB, ESEQ_STUB2} eseq_state;
	enum {DIR_UP, DIR_DOWN, DIR_FORWARD, DIR_BACKWARD, DIR_ABSOLUTE};
	eseq_state eseq;
	QString esc_seq;
	ulong ansiChanges;
	uint newRow, newCol;
	QPoint newCrd;
	bool canDraw;
	bool insertMode;
};
#endif