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//========================================================================
//
// SplashScreen.h
//
//========================================================================
#ifndef SPLASHSCREEN_H
#define SPLASHSCREEN_H
#include <aconf.h>
#ifdef USE_GCC_PRAGMAS
#pragma interface
#endif
#include "SplashTypes.h"
//------------------------------------------------------------------------
// SplashScreen
//------------------------------------------------------------------------
class SplashScreen {
public:
SplashScreen(SplashScreenParams *params);
SplashScreen(SplashScreen *screen);
~SplashScreen();
SplashScreen *copy() { return new SplashScreen(this); }
// Return the computed pixel value (0=black, 1=white) for the gray
// level <value> at (<x>, <y>).
int test(int x, int y, Guchar value);
// Returns true if value is above the white threshold or below the
// black threshold, i.e., if the corresponding halftone will be
// solid white or black.
GBool isStatic(Guchar value);
private:
void buildDispersedMatrix(int i, int j, int val,
int delta, int offset);
void buildClusteredMatrix();
int distance(int x0, int y0, int x1, int y1);
void buildSCDMatrix(int r);
Guchar *mat; // threshold matrix
int size; // size of the threshold matrix
Guchar minVal; // any pixel value below minVal generates
// solid black
Guchar maxVal; // any pixel value above maxVal generates
// solid white
};
#endif
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