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INTERVIE
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GRAPHIC
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GRBLOCK.H
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C/C++ Source or Header
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1991-12-10
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3KB
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91 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.
*/
/*
* GraphicBlock - an interactor that contains a picture.
*/
#ifndef grblock_h
#define grblock_h
#include <InterViews/interactor.h>
typedef enum Zooming { Continuous, Binary };
class Graphic;
class Perspective;
class GraphicBlock : public Interactor {
public:
GraphicBlock(
Sensor*, Graphic*,
Coord pad = 0, Alignment = Center, Zooming = Continuous
);
~GraphicBlock();
virtual void Update();
virtual void Draw();
virtual void Adjust(Perspective&);
virtual void Reconfig();
virtual void Highlight(boolean);
Graphic* GetGraphic();
float GetMagnification();
void SetMagnification(float);
virtual void Invert(); /* obsolete; use Highlight */
protected:
virtual void Resize();
virtual void Redraw(Coord, Coord, Coord, Coord);
void SwapPainters(); /* background: a hack to avoid SetColors */
Painter* GetPainter(); /* in menu highlighting. */
void InvertPainter();
void Init();
void Normalize(Perspective&); /* normalize units */
void Align(); /* align graphic */
void Fix(); /* keep alignment fixed during resize */
float NearestPow2(float); /* convert to nearest power of 2 */
float ScaleFactor(Perspective&);
void UpdatePerspective(); /* recalc based on graphic's bbox */
virtual void GetGraphicBox(Coord&, Coord&, Coord&, Coord&);
virtual void Zoom(Perspective&);
virtual void Scroll(Perspective&);
virtual float LimitMagnification(float);
protected:
Graphic* graphic;
Coord pad;
Alignment align;
Zooming zooming;
Coord x0, y0; /* graphic offset */
float mag; /* total magnification */
Painter* alt; /* alternate painter for drawing */
boolean highlighted;
};
inline Graphic* GraphicBlock::GetGraphic () { return graphic; }
inline float GraphicBlock::GetMagnification () { return mag; }
#endif