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//
// "$Id: DiffView.h 407 2006-11-13 18:54:02Z mike $"
//
// DiffView widget definitions.
//
// Copyright 2005-2006 by Michael Sweet.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License v2 as published
// by the Free Software Foundation.
//
// 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.
//
#ifndef _DiffView_h_
# define _DiffView_h_
# include <FL/Fl.H>
# include <FL/Fl_Group.H>
# include <FL/Fl_Scrollbar.H>
# if defined(WIN32)
# include <io.h>
# else
# include <unistd.h>
# endif // WIN32
//
// DiffView widget to view file differences...
//
class DiffView : public Fl_Group
{
enum
{
IDLE = 0, // Not doing anything
SCROLLING = 1, // Scrolling
SELECTING = 2, // Selecting text
UPARROW = 3, // Holding the up arrow
DOWNARROW = 4 // Holding the down arrow
};
struct DiffLine
{
char *left, // First file's line
*dleft, // Display version
*right, // Second file's line
*dright; // Display version
bool changed; // This line is changed?
int start, // Start of changes
end; // End of changes
};
int alloc_, // Allocated lines
count_; // Number of lines in buffer
bool directories_; // True if we are comparing directories
DiffLine **lines_; // Lines in buffer
char linefmt_[16]; // Line number format
int linenum_; // Width of line numbers
int maxwidth_; // Maximum width of lines
int select_start_, // Start of current selection
select_end_; // End of current selection
bool select_right_, // Select the right side?
showlinenum_, // Show line numbers?
ignoreblanks_; // ignore blanks during diff ?
int state_, // Scroll/selecting state
tabwidth_; // Width of tabs
Fl_Color textcolor_; // Text color
uchar textfont_, // Text font
textsize_; // Text size
int topline_; // Top position
Fl_Scrollbar hscroll1_, // Horizontal scrollbar for first file
hscroll2_; // Horizontal scrollbar for second file
void add_line(const char *left, const char *right, bool changed,
int pos = -1);
void draw();
char *expand_tabs(const char *s);
static void scroll_cb(Fl_Scrollbar *s, DiffView *d);
static void timeout_cb(DiffView *d);
public:
DiffView(int X, int Y, int W, int H, const char *L = 0);
~DiffView();
void clear();
int count() const { return (count_); }
bool directories() const { return (directories_); }
int handle(int event);
const char *left(int l) { return (lines_[l]->left); }
bool line_changed(int l) { return (lines_[l]->changed); }
bool load(const char *file1, const char *file2);
void resize(int X, int Y, int W, int H);
const char *right(int l) { return (lines_[l]->right); }
void select(int s, int e, bool r);
int select_end() const { return (select_end_); }
int select_start() const { return (select_start_); }
char *selection();
int selection_length();
void showline(int l);
void showlinenum(bool b) { showlinenum_ = b; }
bool showlinenum() const { return (showlinenum_); }
void ignoreblanks(bool b) { ignoreblanks_ = b; }
bool ignoreblanks() const { return (ignoreblanks_); }
void tabwidth(int t) { tabwidth_ = t; }
int tabwidth() const { return (tabwidth_); }
void textcolor(Fl_Color c) { textcolor_ = c; }
Fl_Color textcolor() const { return (textcolor_); }
void textfont(uchar f) { textfont_ = f; }
uchar textfont() const { return (textfont_); }
void textsize(uchar s) { textsize_ = s; }
uchar textsize() const { return (textsize_); }
int topline() const { return (topline_ / textsize_); }
};
#endif // !_DiffView_h_
//
// End of "$Id: DiffView.h 407 2006-11-13 18:54:02Z mike $".
//
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