diff options
Diffstat (limited to 'src/hexEditor.hpp')
| -rwxr-xr-x | src/hexEditor.hpp | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/src/hexEditor.hpp b/src/hexEditor.hpp new file mode 100755 index 0000000..be96952 --- /dev/null +++ b/src/hexEditor.hpp @@ -0,0 +1,242 @@ +/* $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 |