notifyFlowsFinished() indirectly used by multi-column layout to determine the restart point after span changes.

getRemainingBPD() is used by the page breaking process in multi-column layout (multiple spans).

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@202361 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 18 insertions, 0 deletions

diff --git a/src/java/org/apache/fop/area/BodyRegion.java b/src/java/org/apache/fop/area/BodyRegion.java
index ceb28b043..1138f3089 100644
--- a/src/java/org/apache/fop/area/BodyRegion.java
+++ b/src/java/org/apache/fop/area/BodyRegion.java
@@ -18,6 +18,8 @@
 
 package org.apache.fop.area;
 
+import java.util.List;
+
 import org.apache.fop.fo.pagination.RegionBody;
 
 /**
@@ -36,6 +38,8 @@ public class BodyRegion extends RegionReference {
     /**
      * Constructor which can read traits directly
      * from an fo:region-body formatting object.
+     * @param rb the region-body FO node
+     * @param parent the parent region viewport
      */
     public BodyRegion(RegionBody rb, RegionViewport parent) {
         super(rb, parent);
@@ -104,6 +108,20 @@ public class BodyRegion extends RegionReference {
     }
 
     /**
+     * @return the available BPD in the main reference area after the previous span reference
+     * areas are subtracted.
+     */
+    public int getRemainingBPD() {
+        int usedBPD = 0;
+        List spans = getMainReference().getSpans();
+        int previousSpanCount = spans.size() - 1;
+        for (int i = 0; i < previousSpanCount; i++) {
+            usedBPD += ((Span)spans.get(i)).getHeight();
+        }
+        return getBPD() - usedBPD;
+    }
+    
+    /**
      * Clone this object.
      *
      * @return a shallow copy of this object