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INTERVIE
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COLOR.H
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C/C++ Source or Header
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1992-01-22
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/*
* 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 color is defined by rgb intensities and usually accessed by name.
*/
#ifndef color_h
#define color_h
#include <InterViews/resource.h>
/*
* Color intensity should be subrange 0..65535, but for compatibility
* reasons it is an integer.
*/
typedef unsigned ColorIntensity;
class Color : public Resource {
public:
Color(ColorIntensity r, ColorIntensity g, ColorIntensity b);
Color(const char*);
Color(const char*, int length);
Color(long pixel);
~Color();
void Intensities(ColorIntensity& r, ColorIntensity& g, ColorIntensity& b);
void DisplayIntensities(
ColorIntensity& r, ColorIntensity& g, ColorIntensity& b
);
int PixelValue();
boolean Valid();
protected:
class ColorRep* rep;
ColorIntensity red, green, blue;
};
class ColorRep {
private:
friend class Color;
ColorRep(long, ColorIntensity&, ColorIntensity&, ColorIntensity&);
ColorRep(const char*, ColorIntensity&, ColorIntensity&, ColorIntensity&);
ColorRep(ColorIntensity, ColorIntensity, ColorIntensity);
~ColorRep();
int GetPixel();
void GetIntensities(ColorIntensity&, ColorIntensity&, ColorIntensity&);
boolean ScanColorFile(const char*, ColorIntensity&, ColorIntensity&, ColorIntensity&);
ColorIntensity red, green, blue;
int pixel;
};
extern Color* black;
extern Color* white;
inline void Color::Intensities (
ColorIntensity& r, ColorIntensity& g, ColorIntensity& b
) {
r = red; g = green; b = blue;
}
inline void Color::DisplayIntensities (
ColorIntensity& r, ColorIntensity& g, ColorIntensity& b
) {
rep->GetIntensities(r, g, b);
}
inline int Color::PixelValue () { return rep->GetPixel(); }
#endif