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INTERVIE
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RUBBAND.H
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C/C++ Source or Header
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1992-03-05
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2KB
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68 lines
/*
* Copyright (c) 1987, 1988, 1989 Stanford University
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Stanford not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. Stanford makes no representations about
* the suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* STANFORD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
* IN NO EVENT SHALL STANFORD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Rubber - rubberbanding graphical objects
*/
#ifndef rubband_h
#define rubband_h
#include <InterViews/defs.h>
#include <InterViews/resource.h>
#include <math.h>
enum Side { LeftSide, RightSide, BottomSide, TopSide };
class Canvas;
class Painter;
class Rubberband : public Resource {
public:
Rubberband(Painter*, Canvas*, Coord offx, Coord offy);
virtual ~Rubberband();
virtual void Draw();
virtual void Redraw();
virtual void Erase();
virtual void Track(Coord x, Coord y);
virtual void SetPainter(Painter*);
virtual void SetCanvas(Canvas*);
Painter* GetPainter();
Canvas* GetCanvas();
protected:
float Angle(Coord, Coord, Coord, Coord); // angle line makes w/horiz
float Distance(Coord, Coord, Coord, Coord); // distance between 2 points
protected:
Painter* output;
Canvas* canvas;
boolean drawn;
Coord trackx, offx;
Coord tracky, offy;
};
inline Painter* Rubberband::GetPainter () { return output; }
inline Canvas* Rubberband::GetCanvas () { return canvas; }
#endif