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/* $Id: hexEditor.hpp,v 1.7 2006-11-05 04:42:43 ganzhorn Exp $
* This file is part of lfhex.
* Copyright (C) 2006 Salem Ganzhorn <eyekode@yahoo.com>
*
* 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 version 2.
*
* 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 _HEX_EDITOR_
#define _HEX_EDITOR_
#include <QMouseEvent>
#include <QFocusEvent>
#include <QResizeEvent>
#include <QKeyEvent>
#include <QPaintEvent>
#include <QWidget>
// STL headers
#include <vector>
// System headers
#include <sys/types.h>
// Local headers
#include "local.h"
#include "reader.hpp"
#include "delta.hpp"
#include "cursor.hpp"
#include "save.hpp"
class HexEditor : public QWidget {
Q_OBJECT
public:
HexEditor( QWidget * parent =0 );
~HexEditor();
// note: closeFile returns QMessageBox::{Yes,No,Cancel}
int closeFile(bool force = false );
bool open(const QString& filename);
// becomes "save as" if filename != ""
bool save(QString filename = "");
bool isModified() const;
QString filename() const;
Reader * reader();
off_t offset() const;
// returns the word (string representation) that the cursor is in
// QString currentWord() const;
//
// cursor movement related fn's
//
void seeCursor();
void cursorLeft();
void cursorRight();
void cursorUp();
void cursorDown();
int wordWidth() const;
int wordSpacing() const;
void setCursorFromXY(int x,int y);
public:
enum SelectionPos_e {
SelectionStart,
SelectionEnd,
};
void setSelection(SelectionPos_e pos,off_t byte_offset);
off_t selectionStart() const;
off_t selectionEnd() const;
// get the char offset from topleft of the point (x,y)
// Note: this wont work for large files, off_t is 2*size() at eof for hex
//off_t charOffsetAtXY( off_t x, off_t y );
int offsetToPercent( off_t offset );
off_t localByteOffsetAtXY( off_t x, off_t y );
protected:
// accessors for local offset's
// note: returned offset's are not necessarily visible
off_t localByteOffset() const;
off_t localWordOffset() const;
off_t localCharOffset() const;
off_t localLineOffset() const;
signals:
// attach to know when line ranges change (for a scrollbar)
void rangeChanged(off_t low, off_t high);
void offsetChanged(off_t byte);
void topLeftChanged(off_t offset);
void selectionChanged(const QString& selection);
public slots:
bool browseLoadFile();
void setOffset(off_t offset); // sets cursor offset
void setTopLeftToPercent( int percent ); // for setting pos from scroll
//
// slots for setting the number of bytes per column
// I really should change all references of "bytesPerWord" to "bytesPerCol"
// sorry for the confusion -Salem
//
void setBytesPerWord( int i );
void set1BPC() { setBytesPerWord(1); };
void set2BPC() { setBytesPerWord(2); };
void set4BPC() { setBytesPerWord(4); };
void set8BPC() { setBytesPerWord(8); };
void nextLine();
void prevLine();
void nextPage();
void prevPage();
void setFont(const QFont& font);
void undo();
void redo();
void search(const QString& hexText, bool forwards);
void setBase(int base); // only 2 8 16 acceptableO
void setBaseHex();
void setBaseOctal();
void setBaseBinary();
void setBaseASCII();
protected:
// void setOffsetLabels( off_t topLeft );
void setTopLeft( off_t offset );
protected:
bool wordModified( off_t widx ) const;
// template setWord so I can call it with different types of string data
template <class _vectType>
void setWord( off_t wordIdx, const _vectType& str );
// calculate the rectangle which bounds the word at _offset+idx
QRect charBBox( off_t charIdx ) const;
QRect byteBBox( off_t byteIdx ) const;
// translate widget coord to word index
int pointToWord(const QPoint& pt);
QChar& pointToChar(const QPoint& pt);
// inlined access fn's
protected:
void calculateFontMetrics();
int charsPerByte() const;
int charsPerWord() const;
int charsPerLine() const;
int bytesPerPage() const;
int bytesPerWord() const;
int bytesPerLine() const;
int wordsPerLine() const;
int wordsPerPage() const;
int linesPerPage() const;
int lineSpacing() const;
int fontHeight() const;
int fontMaxWidth() const;
int topMargin() const;
int leftMargin() const;
// translate local offset to global offset
off_t globalOffset( off_t local ) const;
// translate global offset to local offset.
// Note: globalOffset may not exist in local viewport.
off_t localOffset ( off_t global) const;
protected:
void showMatch( off_t pos, int len );
// drawing utilities
protected:
bool getDisplayText( QString& text );
void drawCursor( QPainter& p );
void drawSelection( QPainter& p );
void drawTextRegion( QPainter& p, const QString& text,
int row_start, int row_end,
int col_start, int col_end );
// event handlers
protected:
void resizeEvent ( QResizeEvent *e );
// generates update() events for the bbox for the word given byh wordIdx
// note: this is range safe, no need to do range checking before passing in
void updateWord ( off_t wordIdx );
void paintEvent ( QPaintEvent*e );
void paintLabels ( QPainter*painter);
void focusInEvent ( QFocusEvent*e );
void focusOutEvent ( QFocusEvent*e );
void keyPressEvent ( QKeyEvent *e );
void mousePressEvent ( QMouseEvent * e );
void mouseReleaseEvent( QMouseEvent *e );
void mouseMoveEvent ( QMouseEvent *e );
protected:
Reader _reader;
int _wordSpacing;
int _wordWidth;
int _lineSpacing;
int _fontHeight;
int _bytesPerWord;
int _charsPerByte;
off_t _topLeft;
//
// current screen data info
//
vector<uchar> _data;
int _base; // either 2 8 or 16
off_t _lastValidWord;
// data used to optimize drawing.
vector<QRect> _lineBBox;
vector<QRect> _wordBBox;
QRect _labelBBox;
int _linspacing;
int _fontMaxWidth;
int _topMargin,_leftMargin;
int _offsetLabelBytes;
int _cols;
int _rows;
int _width;
Cursor _cursor;
//
// when refering to the offset of a word, I always mean the offset of the
// first byte of the word
//
// this class keeps track of modifications
DeltaMap _delta;
// selection:
off_t _selection[2];
};
#endif
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