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INTERVIE
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VIEWPORT.H
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C/C++ Source or Header
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1980-01-03
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3KB
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82 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.
*/
/*
* A viewport contains another interactor. Unlike a MonoScene or Frame,
* a viewport always gives the interactor its desired shape. However,
* the interactor may not be entirely viewable through the viewport.
* The viewport's perspective can be used to adjust what portion is visible.
*/
#ifndef viewport_h
#define viewport_h
#include <InterViews/scene.h>
class Viewport : public MonoScene {
public:
Viewport(Interactor* = nil, Alignment = Center);
Viewport(const char*, Interactor* = nil, Alignment = Center);
Viewport(Sensor*, Painter*, Interactor* = nil, Alignment = Center);
~Viewport();
virtual void Adjust(Perspective&);
virtual void Resize();
void AdjustTo(float px, float py, float zx, float zy);
void AdjustBy(float dpx, float dpy, float dzx, float dzy);
void ScrollTo(float px, float py);
void ScrollXTo(float px);
void ScrollYTo(float py);
void ScrollBy(float dpx, float dpy);
void ScrollXBy(float dpx);
void ScrollYBy(float dpy);
void ZoomTo(float zx, float zy);
void ZoomXTo(float zx);
void ZoomYTo(float zy);
void ZoomBy(float dzx, float dzy);
void ZoomXBy(float dzx);
void ZoomYBy(float dzy);
float XPos();
float YPos();
float XMag();
float YMag();
protected:
Alignment align;
Painter* background;
virtual void Reconfig();
virtual void Redraw(Coord, Coord, Coord, Coord);
virtual void DoMove(Interactor*, Coord& x, Coord& y);
private:
int cwidth;
int cheight;
void Init(Interactor*, Alignment);
void DoAdjust(float px, float py, float zx, float zy);
};
#endif