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Posted to fop-dev@xmlgraphics.apache.org by bu...@apache.org on 2004/03/18 13:53:52 UTC

DO NOT REPLY [Bug 27773] New: - [PATCH] Hyphenation

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http://issues.apache.org/bugzilla/show_bug.cgi?id=27773

[PATCH] Hyphenation

           Summary: [PATCH] Hyphenation
           Product: Fop
           Version: 1.0dev
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: Enhancement
          Priority: Other
         Component: page-master/layout
        AssignedTo: fop-dev@xml.apache.org
        ReportedBy: lfurini@cs.unibo.it


I have tried to solve a few problems concerning hyphenation:
- show the '-' at the end of the hyphenated lines
- use the fo:hyphenate property to enable hyphenation, instead of the alignment
- specify the hyphenation character using the fo:hyphenation-character property

With this simple .fo file it is possible to see that before changes the result 
is the opposite of what expected: hyphenation is done when it shoud not, and 
not when it shoud.

<?xml version="1.0" encoding="iso-8859-1"?>
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
  <fo:layout-master-set>
    <fo:simple-page-master master-name="simple" margin="0.5in">
      <fo:region-body margin="1in"/>
    </fo:simple-page-master>
  </fo:layout-master-set>
  <fo:page-sequence master-reference="simple">
    <fo:flow flow-name="xsl-region-body">
      <fo:block>The following block has language="it", hyphenate="false" and 
text-align="justify"; it should NOT be hyphenated.</fo:block>
      <fo:block start-indent="0.2in" end-indent="0.2in" language="it" 
hyphenate="false" text-align="justify">Lunghissime parolone esagerevoli 
costringerebbero sillabazione auspicabilmente: precipitevolissimevolmente 
transatlantico catastrofico.</fo:block>
      <fo:block>The following block has language="it", hyphenate="true" and 
text-align="start"; it should be hyphenated.</fo:block>
      <fo:block start-indent="0.2in" end-indent="0.2in" language="it" 
hyphenate="true" text-align="start">Lunghissime parolone esagerevoli 
costringerebbero sillabazione auspicabilmente: precipitevolissimevolmente 
transatlantico catastrofico.</fo:block>
      <fo:block>The following block has language="it", hyphenate="true", text-
align="justify" and hyphenation-character="_".</fo:block>
      <fo:block start-indent="0.2in" end-indent="0.2in" language="it" 
hyphenate="true" text-align="justify" hyphenation-character="_">Lunghissime 
parolone esagerevoli costringerebbero sillabazione auspicabilmente: 
precipitevolissimevolmente transatlantico catastrofico.</fo:block>
    </fo:flow>
  </fo:page-sequence>
</fo:root>


This is the diff:

Index: xml-fop/src/java/org/apache/fop/fo/PropertyManager.java
===================================================================
RCS file: /home/cvspublic/xml-
fop/src/java/org/apache/fop/fo/PropertyManager.java,v
retrieving revision 1.24
diff -w -u -r1.24 PropertyManager.java
--- xml-fop/src/java/org/apache/fop/fo/PropertyManager.java	27 Feb 2004 
17:57:40 -0000	1.24
+++ xml-fop/src/java/org/apache/fop/fo/PropertyManager.java	18 Mar 2004 
12:43:55 -0000
@@ -494,6 +494,9 @@
             textInfo.textTransform
                     = this.propertyList.get(PR_TEXT_TRANSFORM).getEnum();
 
+            textInfo.hyphChar = this.propertyList.get(
+                                  PR_HYPHENATION_CHARACTER).getCharacter();
+
         }
         return textInfo;
     }
Index: xml-fop/src/java/org/apache/fop/fo/TextInfo.java
===================================================================
RCS file: /home/cvspublic/xml-fop/src/java/org/apache/fop/fo/TextInfo.java,v
retrieving revision 1.6
diff -w -u -r1.6 TextInfo.java
--- xml-fop/src/java/org/apache/fop/fo/TextInfo.java	27 Feb 2004 17:57:40 -
0000	1.6
+++ xml-fop/src/java/org/apache/fop/fo/TextInfo.java	18 Mar 2004 12:43:55 -
0000
@@ -50,8 +50,8 @@
     /** fo:letter-spacing property */
     public SpaceVal letterSpacing;
 
-    /** can this text be hyphenated? */
-    public boolean bCanHyphenate = true;
+    /* the hyphenation character to be used */
+    public char hyphChar = '-';
 
     /** fo:text-decoration property: is text underlined? */
     public boolean underlined = false;
Index: xml-fop/src/java/org/apache/fop/layoutmgr/LineLayoutManager.java
===================================================================
RCS file: /home/cvspublic/xml-
fop/src/java/org/apache/fop/layoutmgr/LineLayoutManager.java,v
retrieving revision 1.15
diff -w -u -r1.15 LineLayoutManager.java
--- xml-fop/src/java/org/apache/fop/layoutmgr/LineLayoutManager.java	18 Mar 
2004 00:22:40 -0000	1.15
+++ xml-fop/src/java/org/apache/fop/layoutmgr/LineLayoutManager.java	18 Mar 
2004 12:44:00 -0000
@@ -20,6 +20,7 @@
 
 import org.apache.fop.datatypes.Length;
 import org.apache.fop.fo.PropertyManager;
+import org.apache.fop.fo.Constants;
 import org.apache.fop.fo.properties.CommonMarginBlock;
 import org.apache.fop.fo.properties.CommonHyphenation;
 import org.apache.fop.layout.hyphenation.Hyphenation;
@@ -209,7 +210,7 @@
 
                     // This break position doesn't fit
                     // TODO: If we are in nowrap, we use it as is!
-                    if (bTextAlignment == TextAlign.JUSTIFY || prevBP == 
null) {
+                    if (hyphProps.hyphenate == Constants.TRUE) {
                         // If we are already in a hyphenation loop, then stop.
 
                         if (inlineLC.tryHyphenate()) {
Index: xml-fop/src/java/org/apache/fop/layoutmgr/TextLayoutManager.java
===================================================================
RCS file: /home/cvspublic/xml-
fop/src/java/org/apache/fop/layoutmgr/TextLayoutManager.java,v
retrieving revision 1.12
diff -w -u -r1.12 TextLayoutManager.java
--- xml-fop/src/java/org/apache/fop/layoutmgr/TextLayoutManager.java	17 Mar 
2004 03:37:32 -0000	1.12
+++ xml-fop/src/java/org/apache/fop/layoutmgr/TextLayoutManager.java	18 Mar 
2004 12:44:02 -0000
@@ -46,12 +46,14 @@
         private short iBreakIndex;
         private short iWScount;
         private MinOptMax ipdArea;
+        private boolean bHyphenated;
         public AreaInfo(short iSIndex, short iBIndex, short iWS,
-                 MinOptMax ipd) {
+                 MinOptMax ipd, boolean bHyph) {
             iStartIndex = iSIndex;
             iBreakIndex = iBIndex;
             iWScount = iWS;
             ipdArea = ipd;
+            bHyphenated = bHyph;
         }
     }
 
@@ -107,7 +109,7 @@
         // With CID fonts, space isn't neccesary currentFontState.width(32)
         spaceCharIPD = foText.textInfo.fs.getCharWidth(' ');
         // Use hyphenationChar property
-        hyphIPD = foText.textInfo.fs.getCharWidth('-');
+        hyphIPD = foText.textInfo.fs.getCharWidth(foText.textInfo.hyphChar);
         // Make half-space: <space> on either side of a word-space)
         SpaceVal ws = foText.textInfo.wordSpacing;
         halfWS = new SpaceVal(MinOptMax.multiply(ws.getSpace(), 0.5),
@@ -201,7 +203,7 @@
         boolean bCanHyphenate = true;
         int iStopIndex = iNextStart + hc.getNextHyphPoint();
 
-        if (textArray.length < iStopIndex || foText.textInfo.bCanHyphenate == 
false) {
+        if (textArray.length < iStopIndex) {
             iStopIndex = textArray.length;
             bCanHyphenate = false;
         }
@@ -396,7 +398,8 @@
 
         // Position is the index of the info for this word in the vector
         vecAreaInfo.add(
-          new AreaInfo(iWordStart, iNextStart, iWScount, ipd));
+          new AreaInfo(iWordStart, iNextStart, iWScount, ipd, 
+                       ((flags & BreakPoss.HYPHENATED) != 0)));
         BreakPoss bp = new BreakPoss(
                          new LeafPosition(this, vecAreaInfo.size() - 1));
         ipdTotal = ipd;
@@ -493,6 +496,11 @@
             adjust = 1;
         }
         String str = new String(textArray, iStart, ai.iBreakIndex - iStart - 
adjust);
+
+        // add hyphenation character if the last word is hyphenated
+        if (ai.bHyphenated) {
+            str += foText.textInfo.hyphChar;
+        }
 
         if (" ".equals(str)) {
             word = new Space();