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-rw-r--r--src/documentation/content/xdocs/trunk/extensions.xml17
-rw-r--r--src/java/org/apache/fop/fo/expr/ICCColorFunction.java13
-rw-r--r--src/java/org/apache/fop/fo/expr/PropertyTokenizer.java19
-rw-r--r--src/java/org/apache/fop/util/ColorExt.java4
-rw-r--r--src/java/org/apache/fop/util/ColorUtil.java81
5 files changed, 105 insertions, 29 deletions
diff --git a/src/documentation/content/xdocs/trunk/extensions.xml b/src/documentation/content/xdocs/trunk/extensions.xml
index a635205d2..107f6c5b3 100644
--- a/src/documentation/content/xdocs/trunk/extensions.xml
+++ b/src/documentation/content/xdocs/trunk/extensions.xml
@@ -226,6 +226,23 @@ to following pages. Here is an example of FO code creating such a table-header:<
color space the CMYK value is converted to an sRGB value.
</p>
</section>
+ <section id="pseudo-color-profiles">
+ <title>#CMYK pseudo-profile</title>
+ <p><code>color rgb-icc(numeric, numeric, numeric, #CMYK, numeric, numeric, numeric, numeric)</code></p>
+ <p>
+ The <code>rgb-icc</code> function will respond to a pseudo-profile called "#CMYK"
+ which indicates a device-specific CMYK color space. The "#CMYK" profile is implicitely
+ available and doesn't have to be (and cannot be) defined through an
+ <code>fo:color-profile</code> element. It is provided for compatibility with certain
+ commercial XSL-FO implementations. Please note that this is not part of the official
+ specification but rather a convention. The following two color specifications are
+ equivalent:
+ </p>
+ <ul>
+ <li><code>cmyk(0%,0%,20%,40%)</code></li>
+ <li><code>rgb-icc(153, 153, 102, #CMYK, 0, 0, 0.2, 0.4)</code></li>
+ </ul>
+ </section>
</section>
<section id="prepress">
<title>Prepress Support</title>
diff --git a/src/java/org/apache/fop/fo/expr/ICCColorFunction.java b/src/java/org/apache/fop/fo/expr/ICCColorFunction.java
index 2069945f1..9e2ef2e7d 100644
--- a/src/java/org/apache/fop/fo/expr/ICCColorFunction.java
+++ b/src/java/org/apache/fop/fo/expr/ICCColorFunction.java
@@ -24,6 +24,7 @@ import org.apache.fop.fo.pagination.ColorProfile;
import org.apache.fop.fo.pagination.Declarations;
import org.apache.fop.fo.properties.ColorProperty;
import org.apache.fop.fo.properties.Property;
+import org.apache.fop.util.ColorUtil;
/**
* Implements the rgb-icc() function.
@@ -63,13 +64,15 @@ class ICCColorFunction extends FunctionBase {
} else {
cp = decls.getColorProfile(colorProfileName);
if (cp == null) {
- PropertyException pe = new PropertyException("The " + colorProfileName
- + " color profile was not declared");
- pe.setPropertyInfo(pInfo);
- throw pe;
+ if (!ColorUtil.isPseudoProfile(colorProfileName)) {
+ PropertyException pe = new PropertyException("The " + colorProfileName
+ + " color profile was not declared");
+ pe.setPropertyInfo(pInfo);
+ throw pe;
+ }
}
}
- String src = cp.getSrc();
+ String src = (cp != null ? cp.getSrc() : "");
float red = 0, green = 0, blue = 0;
red = args[0].getNumber().floatValue();
diff --git a/src/java/org/apache/fop/fo/expr/PropertyTokenizer.java b/src/java/org/apache/fop/fo/expr/PropertyTokenizer.java
index 2ddcd0922..5baa0c4d8 100644
--- a/src/java/org/apache/fop/fo/expr/PropertyTokenizer.java
+++ b/src/java/org/apache/fop/fo/expr/PropertyTokenizer.java
@@ -243,15 +243,20 @@ class PropertyTokenizer {
}
- private void nextColor () throws PropertyException {
+ private void nextColor() throws PropertyException {
if (exprIndex < exprLength
&& isHexDigit(expr.charAt(exprIndex))) {
++exprIndex;
scanHexDigits();
- currentToken = TOK_COLORSPEC;
+ int len = exprIndex - currentTokenStartIndex - 1;
+ if (len % 3 == 0) {
+ currentToken = TOK_COLORSPEC;
+ } else {
+ scanRestOfName();
+ currentToken = TOK_NCNAME;
+ }
currentTokenValue = expr.substring(currentTokenStartIndex,
exprIndex);
- // Probably should have some multiple of 3 for length!
return;
} else {
throw new PropertyException("illegal character '#'");
@@ -263,11 +268,15 @@ class PropertyTokenizer {
*/
private void scanName() {
if (exprIndex < exprLength && isNameStartChar(expr.charAt(exprIndex))) {
- while (++exprIndex < exprLength
- && isNameChar(expr.charAt(exprIndex))) { }
+ scanRestOfName();
}
}
+ private void scanRestOfName() {
+ while (++exprIndex < exprLength
+ && isNameChar(expr.charAt(exprIndex))) { }
+ }
+
/**
* Attempt to recognize a valid sequence of decimal DIGITS in the
* input expression.
diff --git a/src/java/org/apache/fop/util/ColorExt.java b/src/java/org/apache/fop/util/ColorExt.java
index d2e73d227..22c2dcc36 100644
--- a/src/java/org/apache/fop/util/ColorExt.java
+++ b/src/java/org/apache/fop/util/ColorExt.java
@@ -176,7 +176,9 @@ public final class ColorExt extends Color {
sb.append(this.rgbReplacementGreen + ",");
sb.append(this.rgbReplacementBlue + ",");
sb.append(this.iccProfileName + ",");
- sb.append("\"" + this.iccProfileSrc + "\"");
+ if (this.iccProfileSrc != null) {
+ sb.append("\"" + this.iccProfileSrc + "\"");
+ }
float[] colorComponents = this.getColorComponents(null);
for (int ix = 0; ix < colorComponents.length; ix++) {
sb.append(",");
diff --git a/src/java/org/apache/fop/util/ColorUtil.java b/src/java/org/apache/fop/util/ColorUtil.java
index 9534bfba3..8100aef96 100644
--- a/src/java/org/apache/fop/util/ColorUtil.java
+++ b/src/java/org/apache/fop/util/ColorUtil.java
@@ -38,6 +38,9 @@ import org.apache.fop.fo.expr.PropertyException;
*/
public final class ColorUtil {
+ /** The name for the uncalibrated CMYK pseudo-profile */
+ public static final String CMYK_PSEUDO_PROFILE = "#CMYK";
+
/**
*
* keeps all the predefined and parsed colors.
@@ -319,26 +322,32 @@ public final class ColorUtil {
if (iccProfileName == null || "".equals(iccProfileName)) {
throw new PropertyException("ICC profile name missing");
}
- /* Get and verify ICC profile source */
- String iccProfileSrc = args[4].trim();
- if (iccProfileSrc == null || "".equals(iccProfileSrc)) {
- throw new PropertyException("ICC profile source missing");
- }
- if (iccProfileSrc.startsWith("\"") || iccProfileSrc.startsWith("'")) {
- iccProfileSrc = iccProfileSrc.substring(1);
- }
- if (iccProfileSrc.endsWith("\"") || iccProfileSrc.endsWith("'")) {
- iccProfileSrc = iccProfileSrc.substring(0, iccProfileSrc.length() - 1);
+ ColorSpace colorSpace = null;
+ String iccProfileSrc = null;
+ if (isPseudoProfile(iccProfileName)) {
+ if (CMYK_PSEUDO_PROFILE.equalsIgnoreCase(iccProfileName)) {
+ colorSpace = CMYKColorSpace.getInstance();
+ } 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");
+ }
+ if (iccProfileSrc.startsWith("\"") || iccProfileSrc.startsWith("'")) {
+ iccProfileSrc = iccProfileSrc.substring(1);
+ }
+ if (iccProfileSrc.endsWith("\"") || iccProfileSrc.endsWith("'")) {
+ iccProfileSrc = iccProfileSrc.substring(0, iccProfileSrc.length() - 1);
+ }
}
/* ICC profile arguments */
float[] iccComponents = new float[args.length - 5];
for (int ix = 4; ++ix < args.length;) {
iccComponents[ix - 5] = Float.parseFloat(args[ix].trim());
}
- /* Ask FOP factory to get ColorSpace for the specified ICC profile source */
- ColorSpace colorSpace = (foUserAgent != null
- ? foUserAgent.getFactory().getColorSpace(
- foUserAgent.getBaseURL(), iccProfileSrc) : null);
float red = 0, green = 0, blue = 0;
red = Float.parseFloat(args[0].trim());
@@ -352,6 +361,11 @@ public final class ColorUtil {
+ "Fallback RGB arguments to fop-rgb-icc() must be [0..1]");
}
+ /* Ask FOP factory to get ColorSpace for the specified ICC profile source */
+ if (foUserAgent != null && iccProfileSrc != null) {
+ colorSpace = foUserAgent.getFactory().getColorSpace(
+ foUserAgent.getBaseURL(), iccProfileSrc);
+ }
if (colorSpace != null) {
// ColorSpace available - create ColorExt (keeps track of replacement rgb
// values for possible later colorTOsRGBString call
@@ -440,7 +454,7 @@ public final class ColorUtil {
CMYKColorSpace cmykCs = CMYKColorSpace.getInstance();
float[] rgb = cmykCs.toRGB(cmyk);
parsedColor = ColorExt.createFromFoRgbIcc(rgb[0], rgb[1], rgb[2],
- null, "#CMYK", cmykCs, cmyk);
+ CMYK_PSEUDO_PROFILE, null, cmykCs, cmyk);
} catch (PropertyException pe) {
throw pe;
} catch (Exception e) {
@@ -465,13 +479,13 @@ public final class ColorUtil {
*/
public static String colorToString(Color color) {
ColorSpace cs = color.getColorSpace();
- if (cs != null && cs.getType() == ColorSpace.TYPE_CMYK) {
+ if (color instanceof ColorExt) {
+ return ((ColorExt)color).toFunctionCall();
+ } else if (cs != null && cs.getType() == ColorSpace.TYPE_CMYK) {
StringBuffer sbuf = new StringBuffer(24);
float[] cmyk = color.getColorComponents(null);
sbuf.append("cmyk(" + cmyk[0] + "," + cmyk[1] + "," + cmyk[2] + "," + cmyk[3] + ")");
return sbuf.toString();
- } else if (color instanceof ColorExt) {
- return ((ColorExt)color).toFunctionCall();
} else {
StringBuffer sbuf = new StringBuffer();
sbuf.append('#');
@@ -681,4 +695,35 @@ public final class ColorUtil {
return new Color(cols[0], cols[1], cols[2], cols[3]);
}
+ /**
+ * 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);
+ }
+
+ /**
+ * 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 (col.getRed() == col.getBlue() && col.getRed() == col.getGreen());
+ }
+
+ /**
+ * Creates an uncalibrary CMYK color with the given gray value.
+ * @param black the gray component (0 - 1)
+ * @return the CMYK color
+ */
+ public static Color toCMYKGrayColor(float black) {
+ float[] cmyk = new float[] {0f, 0f, 0f, 1.0f - black};
+ CMYKColorSpace cmykCs = CMYKColorSpace.getInstance();
+ float[] rgb = cmykCs.toRGB(cmyk);
+ return ColorExt.createFromFoRgbIcc(rgb[0], rgb[1], rgb[2],
+ CMYK_PSEUDO_PROFILE, null, cmykCs, cmyk);
+ }
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-22 10:24:18 +0000