org.jpedal.color.CalGrayColorSpace Maven / Gradle / Ivy
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2017 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
@LICENSE@
*
* ---------------
* CalGrayColorSpace.java
* ---------------
*/
package org.jpedal.color;
/**
* handle Java version of CalGrayColorSpace in PDF
*/
public class CalGrayColorSpace extends GenericColorSpace {
private static final long serialVersionUID = -6459433440483127497L;
public CalGrayColorSpace(final float[] whitepoint, final float[] gamma) {
componentCount = 1;
setCIEValues(whitepoint, null, null, gamma);
setType(ColorSpaces.CalGray);
}
/**
* set CalGray color (in terms of rgb)
*/
@Override
public final void setColor(final String[] number_values, final int opCount) {
final float[] colValues = new float[1];
colValues[0] = Float.parseFloat(number_values[0]);
setColor(colValues, 1);
}
/**
* set CalGray color (in terms of rgb)
*/
@Override
public final void setColor(final float[] number_values, final int opCount) {
final float A = number_values[0];
//standard calculate (see pdf spec 1.3 page 170)
float[] values = new float[3];
final float AG = (float) Math.pow(A, G[0]);
// values[0] = (B[0]);
values[0] = ((W[0]) * AG);
values[1] = ((W[1]) * AG);
values[2] = (W[2] * AG);
//convert to rgb
values = cs.toRGB(values);
//set color
this.currentColor = new PdfColor(values[0], values[1], values[2]);
}
}