com.sun.pdfview.colorspace.MaskColorSpace Maven / Gradle / Ivy
/*
* $Id: MaskColorSpace.java,v 1.3 2007/12/20 18:33:34 rbair Exp $
*
* Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle,
* Santa Clara, California 95054, U.S.A. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.sun.pdfview.colorspace;
import java.awt.Color;
import java.awt.color.ColorSpace;
import com.sun.pdfview.PDFPaint;
/**
* A color space used to implement masks. For now, the only type of mask
* supported is one where the image pixels specify where to paint, and the
* painting itself is done in a pre-specified PDF Paint.
*/
public class MaskColorSpace extends ColorSpace {
/** The paint to paint in. Note this cannot be a pattern or gradient. */
private PDFPaint paint;
/** Creates a new instance of PaintColorSpace */
public MaskColorSpace(PDFPaint paint) {
super (TYPE_RGB, 1);
this.paint = paint;
}
public float[] fromCIEXYZ(float[] colorvalue) {
float x = colorvalue[0];
float y = colorvalue[1];
float z = colorvalue[2];
float[] mask = new float[1];
if (Math.round(x) > 0 || Math.round(y) > 0 || Math.round(z) > 0) {
mask[0] = 1;
} else {
mask[0] = 0;
}
return mask;
}
public float[] fromRGB(float[] rgbvalue) {
float r = rgbvalue[0];
float g = rgbvalue[1];
float b = rgbvalue[2];
float[] mask = new float[1];
if (Math.round(r) > 0 || Math.round(g) > 0 || Math.round(b) > 0) {
mask[0] = 1;
} else {
mask[0] = 0;
}
return mask;
}
ColorSpace cie = ColorSpace.getInstance(ColorSpace.CS_CIEXYZ);
float[] prev1= cie.fromRGB(toRGB(new float[] {1.0f}));
float[] prev0= cie.fromRGB(toRGB(new float[] {0.0f}));
public float[] toCIEXYZ(float[] colorvalue) {
if (colorvalue[0]==1) {
return prev1;
} else if (colorvalue[0]==0) {
return prev0;
} else {
// System.out.println("MaskColorSpace converting: "+colorvalue[0]);
return cie.fromRGB(toRGB(colorvalue));
}
}
public float[] toRGB(float[] colorvalue) {
return ((Color) paint.getPaint()).getRGBColorComponents(null);
}
@Override public int getNumComponents() {
return 1;
}
}