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* 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: ColorUtilTestCase.java 1178747 2011-10-04 10:09:01Z vhennebert $ */
package org.apache.fop.util;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import java.awt.Color;
import java.awt.color.ColorSpace;
import java.net.URI;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.apps.FopFactory;
import org.apache.xmlgraphics.java2d.color.ColorSpaces;
import org.apache.xmlgraphics.java2d.color.ColorWithAlternatives;
import org.apache.xmlgraphics.java2d.color.NamedColorSpace;
import org.apache.xmlgraphics.java2d.color.RenderingIntent;
import org.junit.Test;
/**
* Tests the ColorUtil class.
*/
public class ColorUtilTestCase {
/**
* Test serialization to String.
* @throws Exception if an error occurs
*/
@Test
public void testSerialization() throws Exception {
Color col = new Color(1.0f, 1.0f, 0.5f, 1.0f);
String s = ColorUtil.colorToString(col);
//This is what the old color spit out. Now it is 80 due to rounding
//assertEquals("#ffff7f", s);
assertEquals("#ffff80", s);
col = new Color(1.0f, 0.0f, 0.0f, 0.8f);
s = ColorUtil.colorToString(col);
assertEquals("#ff0000cc", s);
}
/**
* Test deserialization from String.
* @throws Exception if an error occurs
*/
@Test
public void testDeserialization() throws Exception {
Color col = ColorUtil.parseColorString(null, "#ffff7f");
assertEquals(255, col.getRed());
assertEquals(255, col.getGreen());
assertEquals(127, col.getBlue());
assertEquals(255, col.getAlpha());
col = ColorUtil.parseColorString(null, "#ff0000cc");
assertEquals(255, col.getRed());
assertEquals(0, col.getGreen());
assertEquals(0, col.getBlue());
assertEquals(204, col.getAlpha());
}
/**
* Test equals().
* @throws Exception if an error occurs
*/
@Test
public void testEquals() throws Exception {
Color col1 = ColorUtil.parseColorString(null, "#ff0000cc");
Color col2 = ColorUtil.parseColorString(null, "#ff0000cc");
assertEquals(col1, col2);
col1 = ColorUtil.parseColorString(null, "fop-rgb-icc(0.5,0.5,0.5,#CMYK,,0.0,0.0,0.0,0.5)");
/* The following doesn't work since java.awt.Color from Sun doesn't round consistently
col2 = ColorUtil.parseColorString(null, "cmyk(0.0,0.0,0.0,0.5)");
assertEquals(col1, col2);
*/
col2 = ColorUtil.parseColorString(null, "fop-rgb-icc(0.5,0.5,0.5,#CMYK,,0.5,0.5,0.5,0.0)");
assertTrue(col1.equals(col2));
assertFalse(org.apache.xmlgraphics.java2d.color.ColorUtil.isSameColor(col1, col2));
}
/**
* Tests the rgb() function.
* @throws Exception if an error occurs
*/
@Test
public void testRGB() throws Exception {
FopFactory fopFactory = FopFactory.newInstance();
FOUserAgent ua = fopFactory.newFOUserAgent();
Color colActual;
colActual = ColorUtil.parseColorString(ua, "rgb(255, 40, 0)");
assertEquals(255, colActual.getRed());
assertEquals(40, colActual.getGreen());
assertEquals(0, colActual.getBlue());
assertEquals(255, colActual.getAlpha());
assertEquals(ColorSpace.getInstance(ColorSpace.CS_sRGB), colActual.getColorSpace());
}
/**
* Tests the fop-rgb-icc() function.
* @throws Exception if an error occurs
*/
@Test
public void testRGBICC() throws Exception {
FopFactory fopFactory = FopFactory.newInstance();
URI sRGBLoc = new URI(
"file:src/java/org/apache/fop/pdf/sRGB%20Color%20Space%20Profile.icm");
ColorSpace cs = fopFactory.getColorSpaceCache().get(
"sRGBAlt", null, sRGBLoc.toASCIIString(), RenderingIntent.AUTO);
assertNotNull("Color profile not found", cs);
FOUserAgent ua = fopFactory.newFOUserAgent();
ColorWithFallback colActual;
//fop-rgb-icc() is used instead of rgb-icc() inside FOP!
String colSpec = "fop-rgb-icc(1.0,0.0,0.0,sRGBAlt,"
+ "\"" + sRGBLoc.toASCIIString() + "\",1.0,0.0,0.0)";
colActual = (ColorWithFallback)ColorUtil.parseColorString(ua, colSpec);
assertEquals(cs, colActual.getColorSpace());
assertEquals(255, colActual.getRed(), 2f); //Java 5: 253, Java 6: 255
assertEquals(0, colActual.getGreen(), 25f); //Java 5: 25, Java 6: 0
assertEquals(0, colActual.getBlue());
//I don't understand the difference. Maybe Java's sRGB and HP's sRGB are somehow not
//equivalent. This is only going to be a problem if anyone actually makes use of the
//RGB fallback in any renderer.
//TODO Anyone know what's going on here?
float[] comps = colActual.getColorComponents(null);
assertEquals(3, comps.length);
assertEquals(1f, comps[0], 0);
assertEquals(0f, comps[1], 0);
assertEquals(0f, comps[2], 0);
assertEquals(0, colActual.getAlternativeColors().length);
Color fallback = colActual.getFallbackColor();
assertTrue(fallback.getColorSpace().isCS_sRGB());
assertEquals(255, fallback.getRed());
assertEquals(0, fallback.getGreen());
assertEquals(0, fallback.getBlue());
assertEquals(colSpec, ColorUtil.colorToString(colActual));
colSpec = "fop-rgb-icc(1.0,0.5,0.0,blah,"
+ "\"invalid.icm\",1.0,0.5,0.0,0.15)";
Color colFallback = ColorUtil.parseColorString(ua, colSpec);
assertEquals(new Color(1.0f, 0.5f, 0.0f), colFallback);
}
/**
* Tests the cmyk() function.
* @throws Exception if an error occurs
*/
@Test
public void testCMYK() throws Exception {
ColorWithAlternatives colActual;
String colSpec;
colSpec = "cmyk(0.0, 0.0, 1.0, 0.0)";
colActual = (ColorWithAlternatives)ColorUtil.parseColorString(null, colSpec);
assertEquals(255, colActual.getRed());
assertEquals(255, colActual.getGreen());
assertEquals(0, colActual.getBlue());
Color alt = colActual.getAlternativeColors()[0];
assertEquals(ColorSpaces.getDeviceCMYKColorSpace(), alt.getColorSpace());
float[] comps = alt.getColorComponents(null);
assertEquals(4, comps.length);
assertEquals(0f, comps[0], 0);
assertEquals(0f, comps[1], 0);
assertEquals(1f, comps[2], 0);
assertEquals(0f, comps[3], 0);
assertEquals("fop-rgb-icc(1.0,1.0,0.0,#CMYK,,0.0,0.0,1.0,0.0)",
ColorUtil.colorToString(colActual));
colSpec = "cmyk(0.0274, 0.2196, 0.3216, 0.0)";
colActual = (ColorWithAlternatives)ColorUtil.parseColorString(null, colSpec);
assertEquals(248, colActual.getRed(), 1);
assertEquals(199, colActual.getGreen(), 1);
assertEquals(172, colActual.getBlue(), 1);
alt = colActual.getAlternativeColors()[0];
assertEquals(ColorSpaces.getDeviceCMYKColorSpace(), alt.getColorSpace());
comps = alt.getColorComponents(null);
assertEquals(0.0274f, comps[0], 0.001);
assertEquals(0.2196f, comps[1], 0.001);
assertEquals(0.3216f, comps[2], 0.001);
assertEquals(0f, comps[3], 0);
assertEquals("fop-rgb-icc(0.9726,0.7804,0.67840004,#CMYK,,0.0274,0.2196,0.3216,0.0)",
ColorUtil.colorToString(colActual));
colSpec = "fop-rgb-icc(1.0,1.0,0.0,#CMYK,,0.0,0.0,1.0,0.0)";
colActual = (ColorWithAlternatives)ColorUtil.parseColorString(null, colSpec);
assertEquals(255, colActual.getRed());
assertEquals(255, colActual.getGreen());
assertEquals(0, colActual.getBlue());
alt = colActual.getAlternativeColors()[0];
assertEquals(ColorSpaces.getDeviceCMYKColorSpace(), alt.getColorSpace());
comps = alt.getColorComponents(null);
assertEquals(4, comps.length);
assertEquals(0f, comps[0], 0);
assertEquals(0f, comps[1], 0);
assertEquals(1f, comps[2], 0);
assertEquals(0f, comps[3], 0);
assertEquals("fop-rgb-icc(1.0,1.0,0.0,#CMYK,,0.0,0.0,1.0,0.0)",
ColorUtil.colorToString(colActual));
colSpec = "fop-rgb-icc(0.5,0.5,0.5,#CMYK,,0.0,0.0,0.0,0.5)";
colActual = (ColorWithAlternatives)ColorUtil.parseColorString(null, colSpec);
assertEquals(127, colActual.getRed(), 1);
assertEquals(127, colActual.getGreen(), 1);
assertEquals(127, colActual.getBlue(), 1);
alt = colActual.getAlternativeColors()[0];
assertEquals(ColorSpaces.getDeviceCMYKColorSpace(), alt.getColorSpace());
comps = alt.getColorComponents(null);
assertEquals(4, comps.length);
assertEquals(0f, comps[0], 0);
assertEquals(0f, comps[1], 0);
assertEquals(0f, comps[2], 0);
assertEquals(0.5f, comps[3], 0);
assertEquals("fop-rgb-icc(0.5,0.5,0.5,#CMYK,,0.0,0.0,0.0,0.5)",
ColorUtil.colorToString(colActual));
//Verify that the cmyk() and fop-rgb-icc(#CMYK) functions have the same results
ColorWithAlternatives colCMYK = (ColorWithAlternatives)ColorUtil.parseColorString(
null, "cmyk(0,0,0,0.5)");
assertEquals(colCMYK.getAlternativeColors()[0], colActual.getAlternativeColors()[0]);
//The following doesn't work:
//assertEquals(colCMYK, colActual);
//java.awt.Color does not consistenly calculate the int RGB values:
//Color(ColorSpace cspace, float components[], float alpha): 0.5 --> 127
//Color(float r, float g, float b): 0.5 --> 128
if (!colCMYK.equals(colActual)) {
System.out.println("Info: java.awt.Color does not consistently calculate"
+ " int RGB values from float RGB values.");
}
}
/**
* Tests color for the #Separation pseudo-colorspace.
* @throws Exception if an error occurs
*/
@Test
public void testSeparationColor() throws Exception {
ColorWithFallback colActual;
String colSpec;
colSpec = "fop-rgb-icc(1.0,0.8,0.0,#Separation,,Postgelb)";
colActual = (ColorWithFallback)ColorUtil.parseColorString(null, colSpec);
assertEquals(255, colActual.getRed(), 5);
assertEquals(204, colActual.getGreen(), 3);
assertEquals(0, colActual.getBlue(), 12);
//sRGB results differ between JDKs
Color fallback = colActual.getFallbackColor();
assertEquals(255, fallback.getRed());
assertEquals(204, fallback.getGreen());
assertEquals(0, fallback.getBlue());
assertFalse(colActual.hasAlternativeColors());
assertTrue(colActual.getColorSpace() instanceof NamedColorSpace);
NamedColorSpace ncs;
ncs = (NamedColorSpace)colActual.getColorSpace();
assertEquals("Postgelb", ncs.getColorName());
float[] comps = colActual.getColorComponents(null);
assertEquals(1, comps.length);
assertEquals(1f, comps[0], 0);
assertEquals(colSpec, ColorUtil.colorToString(colActual));
}
/**
* Tests the fop-rgb-named-color() function.
* @throws Exception if an error occurs
*/
@Test
public void testNamedColorProfile() throws Exception {
FopFactory fopFactory = FopFactory.newInstance();
URI ncpLoc = new URI("file:test/resources/color/ncp-example.icc");
ColorSpace cs = fopFactory.getColorSpaceCache().get(
"NCP", null, ncpLoc.toASCIIString(), RenderingIntent.AUTO);
assertNotNull("Color profile not found", cs);
FOUserAgent ua = fopFactory.newFOUserAgent();
ColorWithFallback colActual;
//fop-rgb-named-color() is used instead of rgb-named-color() inside FOP!
String colSpec = "fop-rgb-named-color(1.0,0.8,0.0,NCP,"
+ "\"" + ncpLoc.toASCIIString() + "\",Postgelb)";
colActual = (ColorWithFallback)ColorUtil.parseColorString(ua, colSpec);
assertEquals(255, colActual.getRed(), 2);
assertEquals(193, colActual.getGreen(), 2);
assertEquals(0, colActual.getBlue());
Color fallback = colActual.getFallbackColor();
assertEquals(255, fallback.getRed());
assertEquals(204, fallback.getGreen());
assertEquals(0, fallback.getBlue());
assertEquals(ColorSpace.getInstance(ColorSpace.CS_sRGB), fallback.getColorSpace());
float[] comps = fallback.getColorComponents(null);
assertEquals(3, comps.length);
assertEquals(1f, comps[0], 0);
assertEquals(0.8f, comps[1], 0);
assertEquals(0f, comps[2], 0);
assertTrue(colActual.getColorSpace() instanceof NamedColorSpace);
NamedColorSpace ncs;
ncs = (NamedColorSpace)colActual.getColorSpace();
assertEquals("Postgelb", ncs.getColorName());
comps = colActual.getColorComponents(null);
assertEquals(1, comps.length);
assertEquals(1f, comps[0], 0);
assertEquals(colSpec, ColorUtil.colorToString(colActual));
}
}