/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id: EPSColorsExample.java 1051421 2010-12-21 08:54:25Z jeremias $ */
package java2d.ps;
import java.awt.Color;
import java.awt.Font;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.commons.io.IOUtils;
import org.apache.xmlgraphics.java2d.color.CIELabColorSpace;
import org.apache.xmlgraphics.java2d.color.ColorSpaces;
import org.apache.xmlgraphics.java2d.color.DeviceCMYKColorSpace;
import org.apache.xmlgraphics.java2d.color.NamedColorSpace;
import org.apache.xmlgraphics.java2d.ps.EPSDocumentGraphics2D;
/**
* This example demonstrates how colors are handled when generating PostScript/EPS.
*/
public class EPSColorsExample {
/**
* Creates an EPS file. The contents are painted using a Graphics2D implementation that
* generates an EPS file.
* @param outputFile the target file
* @throws IOException In case of an I/O error
*/
public static void generateEPSusingJava2D(File outputFile) throws IOException {
OutputStream out = new java.io.FileOutputStream(outputFile);
out = new java.io.BufferedOutputStream(out);
try {
//Instantiate the EPSDocumentGraphics2D instance
EPSDocumentGraphics2D g2d = new EPSDocumentGraphics2D(false);
g2d.setGraphicContext(new org.apache.xmlgraphics.java2d.GraphicContext());
//Set up the document size
g2d.setupDocument(out, 400, 200); //400pt x 200pt
//Paint a bounding box
g2d.drawRect(0, 0, 400, 200);
g2d.setFont(new Font("sans-serif", Font.BOLD, 14));
g2d.drawString("Color usage example:", 10, 20);
g2d.setFont(new Font("sans-serif", Font.PLAIN, 12));
g2d.drawString("RGB", 10, 84);
g2d.drawString("CMYK", 60, 84);
g2d.drawString("(Lab)", 110, 84);
g2d.drawString("(Named)", 160, 84);
//We're creating a few boxes all filled with some variant of the
//"Postgelb" (postal yellow) color as used by Swiss Post.
Color colRGB = new Color(255, 204, 0);
g2d.setColor(colRGB);
g2d.fillRect(10, 30, 40, 40);
//Just convert RGB to CMYK and use that
float[] compsRGB = colRGB.getColorComponents(null);
DeviceCMYKColorSpace cmykCS = ColorSpaces.getDeviceCMYKColorSpace();
float[] compsCMYK = cmykCS.fromRGB(compsRGB);
Color colCMYK = DeviceCMYKColorSpace.createCMYKColor(compsCMYK);
g2d.setColor(colCMYK);
g2d.fillRect(60, 30, 40, 40);
//Try CIELab (not implemented, yet)
CIELabColorSpace d50 = ColorSpaces.getCIELabColorSpaceD50();
Color colLab = d50.toColor(83.25f, 16.45f, 96.89f, 1.0f);
g2d.setColor(colLab);
g2d.fillRect(110, 30, 40, 40);
//Try named color (Separation, not implemented, yet)
float[] c1xyz = d50.toCIEXYZNative(83.25f, 16.45f, 96.89f);
NamedColorSpace postgelb = new NamedColorSpace("Postgelb", c1xyz);
Color colNamed = new Color(postgelb, new float[] {1.0f}, 1.0f);
g2d.setColor(colNamed);
g2d.fillRect(160, 30, 40, 40);
//Cleanup
g2d.finish();
} finally {
IOUtils.closeQuietly(out);
}
}
/**
* Command-line interface
* @param args command-line arguments
*/
public static void main(String[] args) {
try {
File targetDir;
if (args.length >= 1) {
targetDir = new File(args[0]);
} else {
targetDir = new File(".");
}
if (!targetDir.exists()) {
System.err.println("Target Directory does not exist: " + targetDir);
}
generateEPSusingJava2D(new File(targetDir, "eps-example-colors.eps"));
} catch (Exception e) {
e.printStackTrace();
}
}
}