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/*
* $Id: imlines.hxx,v 4.2 2004/06/23 15:58:16 hut66au Exp $
*
* Imview, the portable image analysis application
* http://www.cmis.csiro.au/Hugues.Talbot/imview
* ----------------------------------------------------------
*
* Imview is an attempt to provide an image display application
* suitable for professional image analysis. It was started in
* 1997 and is mostly the result of the efforts of Hugues Talbot,
* Image Analysis Project, CSIRO Mathematical and Information
* Sciences, with help from others (see the CREDITS files for
* more information)
*
* Imview is Copyrighted (C) 1997-2001 by Hugues Talbot and was
* supported in parts by the Australian Commonwealth Science and
* Industry Research Organisation. Please see the COPYRIGHT file
* for full details. Imview also includes the contributions of
* many others. Please see the CREDITS file for full details.
*
* 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, USA.
* */
/*------------------------------------------------------------------------
*
* the imline class
*
* This class draws lines that can be easily erased on any background,
* because they remember what was under them when they were first
* drawn.
*
* Hugues Talbot 4 Apr 1998
*
*-----------------------------------------------------------------------*/
#ifndef IMLINES_H
#define IMLINES_H
#ifndef Fl_Object_H
#include <FL/Fl_Object.H>
#endif
#include <FL/Fl_Group.H>
#include <FL/fl_draw.H>
#include <FL/x.H>
#include <stdio.h>
#include <math.h>
//#include <deque> // the STL queue container
// cannot be used with gcc 2.7.2...
#include <list>
#include "imnmspc.hxx" // contains namespace definition, if needed
using std::list;
#define DEFAULT_XOR_FG 0xffffeffe
typedef enum {
STYLE_XOR = 0, // do not use, causes havoc with redraws
STYLE_SPARSE_COLOUR,
STYLE_FILLED_COLOUR,
STYLE_FILLED_BW,
STYLE_MAX
} linestyle;
struct impoint {
unsigned char R, G, B; // colour values
};
class imline:public Fl_Object {
public:
imline(void);
imline(const imline &l); // copy constructor...
imline(int x1, int y1, int x2, int y2,
linestyle style=STYLE_XOR, int xorval=DEFAULT_XOR_FG, Fl_Color linecolour=FL_WHITE);
~imline(void);
void draw(void);
void undraw(void);
void drawnStatus(int newstatus) { firstdrawn_ = (newstatus == 0); }
bool drawnStatus(void) { return firstdrawn_; }
void defaultXorValue(int xorval) {xorval_ = xorval;}
void getExtremities(int &x1, int &y1, int &x2, int &y2) {
x1 = x1_; y1 = y1_;
x2 = x2_; y2 = y2_;
}
void select(bool v=true) {selected_ = v;}
bool selected(void) const {return selected_;}
void setcolour(Fl_Color c) {linecolour_ = c;}
private:
int x1_, y1_, x2_, y2_;
int style_;
bool firstdrawn_;
list <impoint> pointqueue;
// bresenham
int incx_, incy_, inc1_, inc2_, sizex_;
int dx_, dy_, i_, e_;
int xpos_, ypos_;
void draw_xorline(void);
void draw_filledLine(void);
void draw_BWLine(void);
int bresinit(void);
int bresgetnext(void);
// xor function
int xorval_ ;
bool selected_; // joins two selected points
// colour
Fl_Color linecolour_;
};
#endif // IMLINES_H
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