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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.
- */
-
- /* $Id$ */
-
- package org.apache.fop.util;
-
- import java.awt.Color;
- import java.awt.color.ColorSpace;
- import java.awt.color.ICC_ColorSpace;
- import java.awt.color.ICC_Profile;
- import java.io.IOException;
- import java.util.Collections;
- import java.util.Map;
-
- import org.apache.commons.logging.Log;
- import org.apache.commons.logging.LogFactory;
-
- import org.apache.xmlgraphics.java2d.color.CIELabColorSpace;
- import org.apache.xmlgraphics.java2d.color.ColorSpaceOrigin;
- import org.apache.xmlgraphics.java2d.color.ColorSpaces;
- import org.apache.xmlgraphics.java2d.color.ColorWithAlternatives;
- import org.apache.xmlgraphics.java2d.color.DeviceCMYKColorSpace;
- import org.apache.xmlgraphics.java2d.color.NamedColorSpace;
- import org.apache.xmlgraphics.java2d.color.RenderingIntent;
- import org.apache.xmlgraphics.java2d.color.profile.NamedColorProfile;
- import org.apache.xmlgraphics.java2d.color.profile.NamedColorProfileParser;
-
- import org.apache.fop.apps.FOUserAgent;
- import org.apache.fop.fo.expr.PropertyException;
- import org.apache.fop.util.OCAColor.OCAColorValue;
-
- /**
- * Generic Color helper class.
- * <p>
- * This class supports parsing string values into color values and creating
- * color values for strings. It provides a list of standard color names.
- */
- public final class ColorUtil {
-
- //ColorWithFallback is used to preserve the sRGB fallback exclusively for the purpose
- //of regenerating textual color functions as specified in XSL-FO.
-
- /** The name for the uncalibrated CMYK pseudo-profile */
- public static final String CMYK_PSEUDO_PROFILE = "#CMYK";
-
- /** The name for the Separation pseudo-profile used for spot colors */
- public static final String SEPARATION_PSEUDO_PROFILE = "#Separation";
-
- /**
- * Keeps all the predefined and parsed colors.
- * <p>
- * This map is used to predefine given colors, as well as speeding up
- * parsing of already parsed colors.
- * <p>
- * Important: The use of this color map assumes that all Color instances are immutable!
- */
- private static Map<String, Color> colorMap;
-
- /** Logger instance */
- private static final Log log = LogFactory.getLog(ColorUtil.class);
-
- static {
- initializeColorMap();
- }
-
- /**
- * Private constructor since this is an utility class.
- */
- private ColorUtil() {
- }
-
- /**
- * Creates a color from a given string.
- * <p>
- * This function supports a wide variety of inputs.
- * <ul>
- * <li>#RGB (hex 0..f)</li>
- * <li>#RGBA (hex 0..f)</li>
- * <li>#RRGGBB (hex 00..ff)</li>
- * <li>#RRGGBBAA (hex 00..ff)</li>
- * <li>rgb(r,g,b) (0..255 or 0%..100%)</li>
- * <li>java.awt.Color[r=r,g=g,b=b] (0..255)</li>
- * <li>system-color(colorname)</li>
- * <li>transparent</li>
- * <li>colorname</li>
- * <li>fop-rgb-icc(r,g,b,cs,cs-src,[num]+) (r/g/b: 0..1, num: 0..1)</li>
- * <li>cmyk(c,m,y,k) (0..1)</li>
- * </ul>
- *
- * @param foUserAgent FOUserAgent object
- * @param value
- * the string to parse.
- * @return a Color representing the string if possible
- * @throws PropertyException
- * if the string is not parsable or does not follow any of the
- * given formats.
- */
- public static Color parseColorString(FOUserAgent foUserAgent, String value)
- throws PropertyException {
- if (value == null) {
- return null;
- }
-
- Color parsedColor = colorMap.get(value.toLowerCase());
-
- if (parsedColor == null) {
- if (value.startsWith("#")) {
- parsedColor = parseWithHash(value);
- } else if (value.startsWith("rgb(")) {
- parsedColor = parseAsRGB(value);
- } else if (value.startsWith("url(")) {
- throw new PropertyException(
- "Colors starting with url( are not yet supported!");
- } else if (value.startsWith("java.awt.Color")) {
- parsedColor = parseAsJavaAWTColor(value);
- } else if (value.startsWith("system-color(")) {
- parsedColor = parseAsSystemColor(value);
- } else if (value.startsWith("fop-rgb-icc")) {
- parsedColor = parseAsFopRgbIcc(foUserAgent, value);
- } else if (value.startsWith("fop-rgb-named-color")) {
- parsedColor = parseAsFopRgbNamedColor(foUserAgent, value);
- } else if (value.startsWith("cie-lab-color")) {
- parsedColor = parseAsCIELabColor(foUserAgent, value);
- } else if (value.startsWith("cmyk")) {
- parsedColor = parseAsCMYK(value);
- } else if (value.startsWith("oca")) {
- parsedColor = parseAsOCA(value);
- }
-
- if (parsedColor == null) {
- throw new PropertyException("Unknown Color: " + value);
- }
-
- colorMap.put(value, parsedColor);
- }
-
- return parsedColor;
- }
-
- /**
- * Tries to parse a color given with the system-color() function.
- *
- * @param value
- * the complete line
- * @return a color if possible
- * @throws PropertyException
- * if the format is wrong.
- */
- private static Color parseAsSystemColor(String value)
- throws PropertyException {
- int poss = value.indexOf("(");
- int pose = value.indexOf(")");
- if (poss != -1 && pose != -1) {
- value = value.substring(poss + 1, pose);
- } else {
- throw new PropertyException("Unknown color format: " + value
- + ". Must be system-color(x)");
- }
- return colorMap.get(value);
- }
-
- /**
- * Tries to parse the standard java.awt.Color toString output.
- *
- * @param value
- * the complete line
- * @return a color if possible
- * @throws PropertyException
- * if the format is wrong.
- * @see java.awt.Color#toString()
- */
- private static Color parseAsJavaAWTColor(String value)
- throws PropertyException {
- float red = 0.0f;
- float green = 0.0f;
- float blue = 0.0f;
- int poss = value.indexOf("[");
- int pose = value.indexOf("]");
- try {
- if (poss != -1 && pose != -1) {
- value = value.substring(poss + 1, pose);
- String[] args = value.split(",");
- if (args.length != 3) {
- throw new PropertyException(
- "Invalid number of arguments for a java.awt.Color: " + value);
- }
-
- red = Float.parseFloat(args[0].trim().substring(2)) / 255f;
- green = Float.parseFloat(args[1].trim().substring(2)) / 255f;
- blue = Float.parseFloat(args[2].trim().substring(2)) / 255f;
- if ((red < 0.0 || red > 1.0)
- || (green < 0.0 || green > 1.0)
- || (blue < 0.0 || blue > 1.0)) {
- throw new PropertyException("Color values out of range");
- }
- } else {
- throw new IllegalArgumentException(
- "Invalid format for a java.awt.Color: " + value);
- }
- } catch (RuntimeException re) {
- throw new PropertyException(re);
- }
- return new Color(red, green, blue);
- }
-
- /**
- * Parse a color given with the rgb() function.
- *
- * @param value
- * the complete line
- * @return a color if possible
- * @throws PropertyException
- * if the format is wrong.
- */
- private static Color parseAsRGB(String value) throws PropertyException {
- Color parsedColor;
- int poss = value.indexOf("(");
- int pose = value.indexOf(")");
- if (poss != -1 && pose != -1) {
- value = value.substring(poss + 1, pose);
- try {
- String[] args = value.split(",");
- if (args.length != 3) {
- throw new PropertyException(
- "Invalid number of arguments: rgb(" + value + ")");
- }
- float red = parseComponent255(args[0], value);
- float green = parseComponent255(args[1], value);
- float blue = parseComponent255(args[2], value);
- //Convert to ints to synchronize the behaviour with toRGBFunctionCall()
- int r = (int)(red * 255 + 0.5);
- int g = (int)(green * 255 + 0.5);
- int b = (int)(blue * 255 + 0.5);
- parsedColor = new Color(r, g, b);
- } catch (RuntimeException re) {
- //wrap in a PropertyException
- throw new PropertyException(re);
- }
- } else {
- throw new PropertyException("Unknown color format: " + value
- + ". Must be rgb(r,g,b)");
- }
- return parsedColor;
- }
-
- private static float parseComponent255(String str, String function)
- throws PropertyException {
- float component;
- str = str.trim();
- if (str.endsWith("%")) {
- component = Float.parseFloat(str.substring(0,
- str.length() - 1)) / 100f;
- } else {
- component = Float.parseFloat(str) / 255f;
- }
- if ((component < 0.0 || component > 1.0)) {
- throw new PropertyException("Color value out of range for " + function + ": "
- + str + ". Valid range: [0..255] or [0%..100%]");
- }
- return component;
- }
-
- private static float parseComponent1(String argument, String function)
- throws PropertyException {
- return parseComponent(argument, 0f, 1f, function);
- }
-
- private static float parseComponent(String argument, float min, float max, String function)
- throws PropertyException {
- float component = Float.parseFloat(argument.trim());
- if ((component < min || component > max)) {
- throw new PropertyException("Color value out of range for " + function + ": "
- + argument + ". Valid range: [" + min + ".." + max + "]");
- }
- return component;
- }
-
- private static Color parseFallback(String[] args, String value) throws PropertyException {
- float red = parseComponent1(args[0], value);
- float green = parseComponent1(args[1], value);
- float blue = parseComponent1(args[2], value);
- //Sun's classlib rounds differently with this constructor than when converting to sRGB
- //via CIE XYZ.
- Color sRGB = new Color(red, green, blue);
- return sRGB;
- }
-
- /**
- * Parse a color given in the #.... format.
- *
- * @param value
- * the complete line
- * @return a color if possible
- * @throws PropertyException
- * if the format is wrong.
- */
- private static Color parseWithHash(String value) throws PropertyException {
- Color parsedColor;
- try {
- int len = value.length();
- int alpha;
- if (len == 5 || len == 9) {
- alpha = Integer.parseInt(
- value.substring((len == 5) ? 3 : 7), 16);
- } else {
- alpha = 0xFF;
- }
- int red = 0;
- int green = 0;
- int blue = 0;
- if ((len == 4) || (len == 5)) {
- //multiply by 0x11 = 17 = 255/15
- red = Integer.parseInt(value.substring(1, 2), 16) * 0x11;
- green = Integer.parseInt(value.substring(2, 3), 16) * 0x11;
- blue = Integer.parseInt(value.substring(3, 4), 16) * 0X11;
- } else if ((len == 7) || (len == 9)) {
- red = Integer.parseInt(value.substring(1, 3), 16);
- green = Integer.parseInt(value.substring(3, 5), 16);
- blue = Integer.parseInt(value.substring(5, 7), 16);
- } else {
- throw new NumberFormatException();
- }
- parsedColor = new Color(red, green, blue, alpha);
- } catch (RuntimeException re) {
- throw new PropertyException("Unknown color format: " + value
- + ". Must be #RGB. #RGBA, #RRGGBB, or #RRGGBBAA");
- }
- return parsedColor;
- }
-
- /**
- * Parse a color specified using the fop-rgb-icc() function.
- *
- * @param value the function call
- * @return a color if possible
- * @throws PropertyException if the format is wrong.
- */
- private static Color parseAsFopRgbIcc(FOUserAgent foUserAgent, String value)
- throws PropertyException {
- Color parsedColor;
- int poss = value.indexOf("(");
- int pose = value.indexOf(")");
- if (poss != -1 && pose != -1) {
- String[] args = value.substring(poss + 1, pose).split(",");
-
- try {
- if (args.length < 5) {
- throw new PropertyException("Too few arguments for rgb-icc() function");
- }
-
- //Set up fallback sRGB value
- Color sRGB = parseFallback(args, value);
-
- /* Get and verify ICC profile name */
- String iccProfileName = args[3].trim();
- if (iccProfileName == null || "".equals(iccProfileName)) {
- throw new PropertyException("ICC profile name missing");
- }
- ColorSpace colorSpace = null;
- String iccProfileSrc = null;
- if (isPseudoProfile(iccProfileName)) {
- if (CMYK_PSEUDO_PROFILE.equalsIgnoreCase(iccProfileName)) {
- colorSpace = ColorSpaces.getDeviceCMYKColorSpace();
- } else if (SEPARATION_PSEUDO_PROFILE.equalsIgnoreCase(iccProfileName)) {
- colorSpace = new NamedColorSpace(args[5], sRGB,
- SEPARATION_PSEUDO_PROFILE, null);
- } else {
- assert false : "Incomplete implementation";
- }
- } else {
- /* Get and verify ICC profile source */
- iccProfileSrc = args[4].trim();
- if (iccProfileSrc == null || "".equals(iccProfileSrc)) {
- throw new PropertyException("ICC profile source missing");
- }
- iccProfileSrc = unescapeString(iccProfileSrc);
- }
- /* ICC profile arguments */
- int componentStart = 4;
- if (colorSpace instanceof NamedColorSpace) {
- componentStart++;
- }
- float[] iccComponents = new float[args.length - componentStart - 1];
- for (int ix = componentStart; ++ix < args.length;) {
- iccComponents[ix - componentStart - 1] = Float.parseFloat(args[ix].trim());
- }
- if (colorSpace instanceof NamedColorSpace && iccComponents.length == 0) {
- iccComponents = new float[] {1.0f}; //full tint if not specified
- }
-
- /* Ask FOP factory to get ColorSpace for the specified ICC profile source */
- if (foUserAgent != null && iccProfileSrc != null) {
- RenderingIntent renderingIntent = RenderingIntent.AUTO;
- //TODO connect to fo:color-profile/@rendering-intent
- colorSpace = foUserAgent.getColorSpaceCache().get(
- iccProfileName, iccProfileSrc, renderingIntent);
- }
- if (colorSpace != null) {
- // ColorSpace is available
- if (ColorSpaces.isDeviceColorSpace(colorSpace)) {
- //Device-specific colors are handled differently:
- //sRGB is the primary color with the CMYK as the alternative
- Color deviceColor = new Color(colorSpace, iccComponents, 1.0f);
- float[] rgbComps = sRGB.getRGBColorComponents(null);
- parsedColor = new ColorWithAlternatives(
- rgbComps[0], rgbComps[1], rgbComps[2],
- new Color[] {deviceColor});
- } else {
- parsedColor = new ColorWithFallback(
- colorSpace, iccComponents, 1.0f, null, sRGB);
- }
- } else {
- // ICC profile could not be loaded - use rgb replacement values */
- log.warn("Color profile '" + iccProfileSrc
- + "' not found. Using sRGB replacement values.");
- parsedColor = sRGB;
- }
- } catch (RuntimeException re) {
- throw new PropertyException(re);
- }
- } else {
- throw new PropertyException("Unknown color format: " + value
- + ". Must be fop-rgb-icc(r,g,b,NCNAME,src,....)");
- }
- return parsedColor;
- }
-
- /**
- * Parse a color specified using the fop-rgb-named-color() function.
- *
- * @param value the function call
- * @return a color if possible
- * @throws PropertyException if the format is wrong.
- */
- private static Color parseAsFopRgbNamedColor(FOUserAgent foUserAgent, String value)
- throws PropertyException {
- Color parsedColor;
- int poss = value.indexOf("(");
- int pose = value.indexOf(")");
- if (poss != -1 && pose != -1) {
- String[] args = value.substring(poss + 1, pose).split(",");
-
- try {
- if (args.length != 6) {
- throw new PropertyException("rgb-named-color() function must have 6 arguments");
- }
-
- //Set up fallback sRGB value
- Color sRGB = parseFallback(args, value);
-
- /* Get and verify ICC profile name */
- String iccProfileName = args[3].trim();
- if (iccProfileName == null || "".equals(iccProfileName)) {
- throw new PropertyException("ICC profile name missing");
- }
- ICC_ColorSpace colorSpace = null;
- String iccProfileSrc;
- if (isPseudoProfile(iccProfileName)) {
- throw new IllegalArgumentException(
- "Pseudo-profiles are not allowed with fop-rgb-named-color()");
- } else {
- /* Get and verify ICC profile source */
- iccProfileSrc = args[4].trim();
- if (iccProfileSrc == null || "".equals(iccProfileSrc)) {
- throw new PropertyException("ICC profile source missing");
- }
- iccProfileSrc = unescapeString(iccProfileSrc);
- }
-
- // color name
- String colorName = unescapeString(args[5].trim());
-
- /* Ask FOP factory to get ColorSpace for the specified ICC profile source */
- if (foUserAgent != null && iccProfileSrc != null) {
- RenderingIntent renderingIntent = RenderingIntent.AUTO;
- //TODO connect to fo:color-profile/@rendering-intent
- colorSpace = (ICC_ColorSpace)foUserAgent.getColorSpaceCache().get(
- iccProfileName, iccProfileSrc, renderingIntent);
- }
- if (colorSpace != null) {
- ICC_Profile profile = colorSpace.getProfile();
- if (NamedColorProfileParser.isNamedColorProfile(profile)) {
- NamedColorProfileParser parser = new NamedColorProfileParser();
- NamedColorProfile ncp = parser.parseProfile(profile,
- iccProfileName, iccProfileSrc);
- NamedColorSpace ncs = ncp.getNamedColor(colorName);
- if (ncs != null) {
- parsedColor = new ColorWithFallback(ncs,
- new float[] {1.0f}, 1.0f, null, sRGB);
- } else {
- log.warn("Color '" + colorName
- + "' does not exist in named color profile: " + iccProfileSrc);
- parsedColor = sRGB;
- }
- } else {
- log.warn("ICC profile is no named color profile: " + iccProfileSrc);
- parsedColor = sRGB;
- }
- } else {
- // ICC profile could not be loaded - use rgb replacement values */
- log.warn("Color profile '" + iccProfileSrc
- + "' not found. Using sRGB replacement values.");
- parsedColor = sRGB;
- }
- } catch (IOException ioe) {
- //wrap in a PropertyException
- throw new PropertyException(ioe);
- } catch (RuntimeException re) {
- throw new PropertyException(re);
- //wrap in a PropertyException
- }
- } else {
- throw new PropertyException("Unknown color format: " + value
- + ". Must be fop-rgb-named-color(r,g,b,NCNAME,src,color-name)");
- }
- return parsedColor;
- }
-
- /**
- * Parse a color specified using the cie-lab-color() function.
- *
- * @param value the function call
- * @return a color if possible
- * @throws PropertyException if the format is wrong.
- */
- private static Color parseAsCIELabColor(FOUserAgent foUserAgent, String value)
- throws PropertyException {
- Color parsedColor;
- int poss = value.indexOf("(");
- int pose = value.indexOf(")");
- if (poss != -1 && pose != -1) {
- try {
- String[] args = value.substring(poss + 1, pose).split(",");
-
- if (args.length != 6) {
- throw new PropertyException("cie-lab-color() function must have 6 arguments");
- }
-
- //Set up fallback sRGB value
- float red = parseComponent255(args[0], value);
- float green = parseComponent255(args[1], value);
- float blue = parseComponent255(args[2], value);
- Color sRGB = new Color(red, green, blue);
-
- float l = parseComponent(args[3], 0f, 100f, value);
- float a = parseComponent(args[4], -127f, 127f, value);
- float b = parseComponent(args[5], -127f, 127f, value);
-
- //Assuming the XSL-FO spec uses the D50 white point
- CIELabColorSpace cs = ColorSpaces.getCIELabColorSpaceD50();
- //use toColor() to have components normalized
- Color labColor = cs.toColor(l, a, b, 1.0f);
- //Convert to ColorWithFallback
- parsedColor = new ColorWithFallback(labColor, sRGB);
- } catch (RuntimeException re) {
- throw new PropertyException(re);
- }
- } else {
- throw new PropertyException("Unknown color format: " + value
- + ". Must be cie-lab-color(r,g,b,Lightness,a-value,b-value)");
- }
- return parsedColor;
- }
-
- private static String unescapeString(String iccProfileSrc) {
- if (iccProfileSrc.startsWith("\"") || iccProfileSrc.startsWith("'")) {
- iccProfileSrc = iccProfileSrc.substring(1);
- }
- if (iccProfileSrc.endsWith("\"") || iccProfileSrc.endsWith("'")) {
- iccProfileSrc = iccProfileSrc.substring(0, iccProfileSrc.length() - 1);
- }
- return iccProfileSrc;
- }
-
- /**
- * Parse a color given with the cmyk() function.
- *
- * @param value
- * the complete line
- * @return a color if possible
- * @throws PropertyException
- * if the format is wrong.
- */
- private static Color parseAsCMYK(String value) throws PropertyException {
- Color parsedColor;
- int poss = value.indexOf("(");
- int pose = value.indexOf(")");
- if (poss != -1 && pose != -1) {
- value = value.substring(poss + 1, pose);
- String[] args = value.split(",");
- try {
- if (args.length != 4) {
- throw new PropertyException(
- "Invalid number of arguments: cmyk(" + value + ")");
- }
- float cyan = parseComponent1(args[0], value);
- float magenta = parseComponent1(args[1], value);
- float yellow = parseComponent1(args[2], value);
- float black = parseComponent1(args[3], value);
- float[] comps = new float[] {cyan, magenta, yellow, black};
- Color cmykColor = DeviceCMYKColorSpace.createCMYKColor(comps);
- float[] rgbComps = cmykColor.getRGBColorComponents(null);
- parsedColor = new ColorWithAlternatives(rgbComps[0], rgbComps[1], rgbComps[2],
- new Color[] {cmykColor});
- } catch (RuntimeException re) {
- throw new PropertyException(re);
- }
- } else {
- throw new PropertyException("Unknown color format: " + value
- + ". Must be cmyk(c,m,y,k)");
- }
- return parsedColor;
- }
-
- private static Color parseAsOCA(String value) throws PropertyException {
- int poss = value.indexOf("(");
- int pose = value.indexOf(")");
- if (poss != -1 && pose != -1) {
- value = value.substring(poss + 1, pose);
- OCAColorValue colorValue;
- if (value.equals("blue")) {
- colorValue = OCAColorValue.BLUE;
- } else if (value.equals("red")) {
- colorValue = OCAColorValue.RED;
- } else if (value.equals("magenta")) {
- colorValue = OCAColorValue.MAGENTA;
- } else if (value.equals("green")) {
- colorValue = OCAColorValue.GREEN;
- } else if (value.equals("cyan")) {
- colorValue = OCAColorValue.CYAN;
- } else if (value.equals("yellow")) {
- colorValue = OCAColorValue.YELLOW;
- } else if (value.equals("black")) {
- colorValue = OCAColorValue.BLACK;
- } else if (value.equals("brown")) {
- colorValue = OCAColorValue.BROWN;
- } else if (value.equals("medium-color")) {
- colorValue = OCAColorValue.MEDIUM_COLOR;
- } else if (value.equals("device-default")) {
- colorValue = OCAColorValue.DEVICE_DEFAULT;
- } else {
- throw new PropertyException("Unknwon OCA color: " + value);
- }
- return new OCAColor(colorValue);
- } else {
- throw new PropertyException("Unknown color format: " + value
- + ". Must be oca(color-name)");
- }
- }
-
- /**
- * Creates a re-parsable string representation of the given color.
- * <p>
- * First, the color will be converted into the sRGB colorspace. It will then
- * be printed as #rrggbb, or as #rrrggbbaa if an alpha value is present.
- *
- * @param color
- * the color to represent.
- * @return a re-parsable string representadion.
- */
- public static String colorToString(Color color) {
- ColorSpace cs = color.getColorSpace();
- if (color instanceof ColorWithAlternatives) {
- return toFunctionCall((ColorWithAlternatives)color);
- } else if (cs != null && cs.getType() == ColorSpace.TYPE_CMYK) {
- StringBuffer sbuf = new StringBuffer(24);
- float[] cmyk = color.getColorComponents(null);
- sbuf.append("cmyk(").append(cmyk[0])
- .append(",").append(cmyk[1])
- .append(",").append(cmyk[2])
- .append(",").append(cmyk[3]).append(")");
- return sbuf.toString();
- } else {
- return toRGBFunctionCall(color);
- }
- }
-
- private static String toRGBFunctionCall(Color color) {
- StringBuffer sbuf = new StringBuffer();
- sbuf.append('#');
- String s = Integer.toHexString(color.getRed());
- if (s.length() == 1) {
- sbuf.append('0');
- }
- sbuf.append(s);
- s = Integer.toHexString(color.getGreen());
- if (s.length() == 1) {
- sbuf.append('0');
- }
- sbuf.append(s);
- s = Integer.toHexString(color.getBlue());
- if (s.length() == 1) {
- sbuf.append('0');
- }
- sbuf.append(s);
- if (color.getAlpha() != 255) {
- s = Integer.toHexString(color.getAlpha());
- if (s.length() == 1) {
- sbuf.append('0');
- }
- sbuf.append(s);
- }
- return sbuf.toString();
- }
-
- private static Color getsRGBFallback(ColorWithAlternatives color) {
- Color fallbackColor;
- if (color instanceof ColorWithFallback) {
- fallbackColor = ((ColorWithFallback)color).getFallbackColor();
- if (!fallbackColor.getColorSpace().isCS_sRGB()) {
- fallbackColor = toSRGBColor(fallbackColor);
- }
- } else {
- fallbackColor = toSRGBColor(color);
- }
- return fallbackColor;
- }
-
- private static Color toSRGBColor(Color color) {
- float[] comps;
- ColorSpace sRGB = ColorSpace.getInstance(ColorSpace.CS_sRGB);
- comps = color.getRGBColorComponents(null);
- float[] allComps = color.getComponents(null);
- float alpha = allComps[allComps.length - 1]; //Alpha is on last component
- return new Color(sRGB, comps, alpha);
- }
-
- /**
- * Create string representation of a fop-rgb-icc (or fop-rgb-named-color) function call from
- * the given color.
- * @param color the color to turn into a function call
- * @return the string representing the internal fop-rgb-icc() or fop-rgb-named-color()
- * function call
- */
- private static String toFunctionCall(ColorWithAlternatives color) {
- ColorSpace cs = color.getColorSpace();
- if (cs.isCS_sRGB() && !color.hasAlternativeColors()) {
- return toRGBFunctionCall(color);
- }
- if (cs instanceof CIELabColorSpace) {
- return toCIELabFunctionCall(color);
- }
-
- Color specColor = color;
- if (color.hasAlternativeColors()) {
- Color alt = color.getAlternativeColors()[0];
- if (ColorSpaces.isDeviceColorSpace(alt.getColorSpace())) {
- cs = alt.getColorSpace();
- specColor = alt;
- }
- }
- ColorSpaceOrigin origin = ColorSpaces.getColorSpaceOrigin(cs);
- String functionName;
-
- Color fallbackColor = getsRGBFallback(color);
- float[] rgb = fallbackColor.getColorComponents(null);
- assert rgb.length == 3;
- StringBuffer sb = new StringBuffer(40);
- sb.append("(");
- sb.append(rgb[0]).append(",");
- sb.append(rgb[1]).append(",");
- sb.append(rgb[2]).append(",");
- String profileName = origin.getProfileName();
- sb.append(profileName).append(",");
- if (origin.getProfileURI() != null) {
- sb.append("\"").append(origin.getProfileURI()).append("\"");
- }
-
- if (cs instanceof NamedColorSpace) {
- NamedColorSpace ncs = (NamedColorSpace)cs;
- if (SEPARATION_PSEUDO_PROFILE.equalsIgnoreCase(profileName)) {
- functionName = "fop-rgb-icc";
- } else {
- functionName = "fop-rgb-named-color";
- }
- sb.append(",").append(ncs.getColorName());
- } else {
- functionName = "fop-rgb-icc";
- float[] colorComponents = specColor.getColorComponents(null);
- for (float colorComponent : colorComponents) {
- sb.append(",");
- sb.append(colorComponent);
- }
- }
- sb.append(")");
- return functionName + sb;
- }
-
- private static String toCIELabFunctionCall(ColorWithAlternatives color) {
- Color fallbackColor = getsRGBFallback(color);
- StringBuffer sb = new StringBuffer("cie-lab-color(");
- sb.append(fallbackColor.getRed()).append(',');
- sb.append(fallbackColor.getGreen()).append(',');
- sb.append(fallbackColor.getBlue());
- CIELabColorSpace cs = (CIELabColorSpace)color.getColorSpace();
- float[] lab = cs.toNativeComponents(color.getColorComponents(null));
- for (int i = 0; i < 3; i++) {
- sb.append(',').append(lab[i]);
- }
- sb.append(')');
- return sb.toString();
- }
-
- private static Color createColor(int r, int g, int b) {
- return new Color(r, g, b);
- }
-
- /**
- * Initializes the colorMap with some predefined values.
- */
- private static void initializeColorMap() {
- colorMap = Collections.synchronizedMap(new java.util.HashMap<String, Color>());
-
- colorMap.put("aliceblue", createColor(240, 248, 255));
- colorMap.put("antiquewhite", createColor(250, 235, 215));
- colorMap.put("aqua", createColor(0, 255, 255));
- colorMap.put("aquamarine", createColor(127, 255, 212));
- colorMap.put("azure", createColor(240, 255, 255));
- colorMap.put("beige", createColor(245, 245, 220));
- colorMap.put("bisque", createColor(255, 228, 196));
- colorMap.put("black", createColor(0, 0, 0));
- colorMap.put("blanchedalmond", createColor(255, 235, 205));
- colorMap.put("blue", createColor(0, 0, 255));
- colorMap.put("blueviolet", createColor(138, 43, 226));
- colorMap.put("brown", createColor(165, 42, 42));
- colorMap.put("burlywood", createColor(222, 184, 135));
- colorMap.put("cadetblue", createColor(95, 158, 160));
- colorMap.put("chartreuse", createColor(127, 255, 0));
- colorMap.put("chocolate", createColor(210, 105, 30));
- colorMap.put("coral", createColor(255, 127, 80));
- colorMap.put("cornflowerblue", createColor(100, 149, 237));
- colorMap.put("cornsilk", createColor(255, 248, 220));
- colorMap.put("crimson", createColor(220, 20, 60));
- colorMap.put("cyan", createColor(0, 255, 255));
- colorMap.put("darkblue", createColor(0, 0, 139));
- colorMap.put("darkcyan", createColor(0, 139, 139));
- colorMap.put("darkgoldenrod", createColor(184, 134, 11));
- colorMap.put("darkgray", createColor(169, 169, 169));
- colorMap.put("darkgreen", createColor(0, 100, 0));
- colorMap.put("darkgrey", createColor(169, 169, 169));
- colorMap.put("darkkhaki", createColor(189, 183, 107));
- colorMap.put("darkmagenta", createColor(139, 0, 139));
- colorMap.put("darkolivegreen", createColor(85, 107, 47));
- colorMap.put("darkorange", createColor(255, 140, 0));
- colorMap.put("darkorchid", createColor(153, 50, 204));
- colorMap.put("darkred", createColor(139, 0, 0));
- colorMap.put("darksalmon", createColor(233, 150, 122));
- colorMap.put("darkseagreen", createColor(143, 188, 143));
- colorMap.put("darkslateblue", createColor(72, 61, 139));
- colorMap.put("darkslategray", createColor(47, 79, 79));
- colorMap.put("darkslategrey", createColor(47, 79, 79));
- colorMap.put("darkturquoise", createColor(0, 206, 209));
- colorMap.put("darkviolet", createColor(148, 0, 211));
- colorMap.put("deeppink", createColor(255, 20, 147));
- colorMap.put("deepskyblue", createColor(0, 191, 255));
- colorMap.put("dimgray", createColor(105, 105, 105));
- colorMap.put("dimgrey", createColor(105, 105, 105));
- colorMap.put("dodgerblue", createColor(30, 144, 255));
- colorMap.put("firebrick", createColor(178, 34, 34));
- colorMap.put("floralwhite", createColor(255, 250, 240));
- colorMap.put("forestgreen", createColor(34, 139, 34));
- colorMap.put("fuchsia", createColor(255, 0, 255));
- colorMap.put("gainsboro", createColor(220, 220, 220));
- colorMap.put("ghostwhite", createColor(248, 248, 255));
- colorMap.put("gold", createColor(255, 215, 0));
- colorMap.put("goldenrod", createColor(218, 165, 32));
- colorMap.put("gray", createColor(128, 128, 128));
- colorMap.put("green", createColor(0, 128, 0));
- colorMap.put("greenyellow", createColor(173, 255, 47));
- colorMap.put("grey", createColor(128, 128, 128));
- colorMap.put("honeydew", createColor(240, 255, 240));
- colorMap.put("hotpink", createColor(255, 105, 180));
- colorMap.put("indianred", createColor(205, 92, 92));
- colorMap.put("indigo", createColor(75, 0, 130));
- colorMap.put("ivory", createColor(255, 255, 240));
- colorMap.put("khaki", createColor(240, 230, 140));
- colorMap.put("lavender", createColor(230, 230, 250));
- colorMap.put("lavenderblush", createColor(255, 240, 245));
- colorMap.put("lawngreen", createColor(124, 252, 0));
- colorMap.put("lemonchiffon", createColor(255, 250, 205));
- colorMap.put("lightblue", createColor(173, 216, 230));
- colorMap.put("lightcoral", createColor(240, 128, 128));
- colorMap.put("lightcyan", createColor(224, 255, 255));
- colorMap.put("lightgoldenrodyellow", createColor(250, 250, 210));
- colorMap.put("lightgray", createColor(211, 211, 211));
- colorMap.put("lightgreen", createColor(144, 238, 144));
- colorMap.put("lightgrey", createColor(211, 211, 211));
- colorMap.put("lightpink", createColor(255, 182, 193));
- colorMap.put("lightsalmon", createColor(255, 160, 122));
- colorMap.put("lightseagreen", createColor(32, 178, 170));
- colorMap.put("lightskyblue", createColor(135, 206, 250));
- colorMap.put("lightslategray", createColor(119, 136, 153));
- colorMap.put("lightslategrey", createColor(119, 136, 153));
- colorMap.put("lightsteelblue", createColor(176, 196, 222));
- colorMap.put("lightyellow", createColor(255, 255, 224));
- colorMap.put("lime", createColor(0, 255, 0));
- colorMap.put("limegreen", createColor(50, 205, 50));
- colorMap.put("linen", createColor(250, 240, 230));
- colorMap.put("magenta", createColor(255, 0, 255));
- colorMap.put("maroon", createColor(128, 0, 0));
- colorMap.put("mediumaquamarine", createColor(102, 205, 170));
- colorMap.put("mediumblue", createColor(0, 0, 205));
- colorMap.put("mediumorchid", createColor(186, 85, 211));
- colorMap.put("mediumpurple", createColor(147, 112, 219));
- colorMap.put("mediumseagreen", createColor(60, 179, 113));
- colorMap.put("mediumslateblue", createColor(123, 104, 238));
- colorMap.put("mediumspringgreen", createColor(0, 250, 154));
- colorMap.put("mediumturquoise", createColor(72, 209, 204));
- colorMap.put("mediumvioletred", createColor(199, 21, 133));
- colorMap.put("midnightblue", createColor(25, 25, 112));
- colorMap.put("mintcream", createColor(245, 255, 250));
- colorMap.put("mistyrose", createColor(255, 228, 225));
- colorMap.put("moccasin", createColor(255, 228, 181));
- colorMap.put("navajowhite", createColor(255, 222, 173));
- colorMap.put("navy", createColor(0, 0, 128));
- colorMap.put("oldlace", createColor(253, 245, 230));
- colorMap.put("olive", createColor(128, 128, 0));
- colorMap.put("olivedrab", createColor(107, 142, 35));
- colorMap.put("orange", createColor(255, 165, 0));
- colorMap.put("orangered", createColor(255, 69, 0));
- colorMap.put("orchid", createColor(218, 112, 214));
- colorMap.put("palegoldenrod", createColor(238, 232, 170));
- colorMap.put("palegreen", createColor(152, 251, 152));
- colorMap.put("paleturquoise", createColor(175, 238, 238));
- colorMap.put("palevioletred", createColor(219, 112, 147));
- colorMap.put("papayawhip", createColor(255, 239, 213));
- colorMap.put("peachpuff", createColor(255, 218, 185));
- colorMap.put("peru", createColor(205, 133, 63));
- colorMap.put("pink", createColor(255, 192, 203));
- colorMap.put("plum ", createColor(221, 160, 221));
- colorMap.put("plum", createColor(221, 160, 221));
- colorMap.put("powderblue", createColor(176, 224, 230));
- colorMap.put("purple", createColor(128, 0, 128));
- colorMap.put("red", createColor(255, 0, 0));
- colorMap.put("rosybrown", createColor(188, 143, 143));
- colorMap.put("royalblue", createColor(65, 105, 225));
- colorMap.put("saddlebrown", createColor(139, 69, 19));
- colorMap.put("salmon", createColor(250, 128, 114));
- colorMap.put("sandybrown", createColor(244, 164, 96));
- colorMap.put("seagreen", createColor(46, 139, 87));
- colorMap.put("seashell", createColor(255, 245, 238));
- colorMap.put("sienna", createColor(160, 82, 45));
- colorMap.put("silver", createColor(192, 192, 192));
- colorMap.put("skyblue", createColor(135, 206, 235));
- colorMap.put("slateblue", createColor(106, 90, 205));
- colorMap.put("slategray", createColor(112, 128, 144));
- colorMap.put("slategrey", createColor(112, 128, 144));
- colorMap.put("snow", createColor(255, 250, 250));
- colorMap.put("springgreen", createColor(0, 255, 127));
- colorMap.put("steelblue", createColor(70, 130, 180));
- colorMap.put("tan", createColor(210, 180, 140));
- colorMap.put("teal", createColor(0, 128, 128));
- colorMap.put("thistle", createColor(216, 191, 216));
- colorMap.put("tomato", createColor(255, 99, 71));
- colorMap.put("turquoise", createColor(64, 224, 208));
- colorMap.put("violet", createColor(238, 130, 238));
- colorMap.put("wheat", createColor(245, 222, 179));
- colorMap.put("white", createColor(255, 255, 255));
- colorMap.put("whitesmoke", createColor(245, 245, 245));
- colorMap.put("yellow", createColor(255, 255, 0));
- colorMap.put("yellowgreen", createColor(154, 205, 50));
- colorMap.put("transparent", new ColorWithAlternatives(0, 0, 0, 0, null));
- }
-
- /**
- * Lightens up a color for groove, ridge, inset and outset border effects.
- * @param col the color to lighten up
- * @param factor factor by which to lighten up (negative values darken the color)
- * @return the modified color
- */
- public static Color lightenColor(Color col, float factor) {
- return org.apache.xmlgraphics.java2d.color.ColorUtil.lightenColor(col, factor);
- }
-
- /**
- * Indicates whether the given color profile name is one of the pseudo-profiles supported
- * by FOP (ex. #CMYK).
- * @param colorProfileName the color profile name to check
- * @return true if the color profile name is of a built-in pseudo-profile
- */
- public static boolean isPseudoProfile(String colorProfileName) {
- return CMYK_PSEUDO_PROFILE.equalsIgnoreCase(colorProfileName)
- || SEPARATION_PSEUDO_PROFILE.equalsIgnoreCase(colorProfileName);
- }
-
- /**
- * Indicates whether the color is a gray value.
- * @param col the color
- * @return true if it is a gray value
- */
- public static boolean isGray(Color col) {
- return org.apache.xmlgraphics.java2d.color.ColorUtil.isGray(col);
- }
-
- /**
- * Creates an uncalibrated CMYK color with the given gray value.
- * @param black the gray component (0 - 1)
- * @return the CMYK color
- */
- public static Color toCMYKGrayColor(float black) {
- return org.apache.xmlgraphics.java2d.color.ColorUtil.toCMYKGrayColor(black);
- }
- }
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