FOP-2934: Absolute element should not be removed

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@1877372 13f79535-47bb-0310-9956-ffa450edef68

2 files changed, 14 insertions, 4 deletions

diff --git a/fop-core/src/main/java/org/apache/fop/layoutmgr/BlockContainerLayoutManager.java b/fop-core/src/main/java/org/apache/fop/layoutmgr/BlockContainerLayoutManager.java
index f0fc77577..dced73317 100644
--- a/fop-core/src/main/java/org/apache/fop/layoutmgr/BlockContainerLayoutManager.java
+++ b/fop-core/src/main/java/org/apache/fop/layoutmgr/BlockContainerLayoutManager.java
@@ -161,7 +161,7 @@ public class BlockContainerLayoutManager extends SpacedBorderedPaddedBlockLayout
         return indents;
     }
 
-    private boolean isAbsoluteOrFixed() {
+    protected boolean isAbsoluteOrFixed() {
         return (abProps.absolutePosition == EN_ABSOLUTE
                 || abProps.absolutePosition == EN_FIXED);
     }
diff --git a/fop-core/src/main/java/org/apache/fop/layoutmgr/ElementListUtils.java b/fop-core/src/main/java/org/apache/fop/layoutmgr/ElementListUtils.java
index e0f2daea0..9b964843e 100644
--- a/fop-core/src/main/java/org/apache/fop/layoutmgr/ElementListUtils.java
+++ b/fop-core/src/main/java/org/apache/fop/layoutmgr/ElementListUtils.java
@@ -229,10 +229,20 @@ public final class ElementListUtils {
     public static boolean isEmptyBox(List elements) {
         if (elements.size() == 1 && elements.get(0) instanceof KnuthBox) {
             KnuthBox kb = (KnuthBox) elements.get(0);
-            if (kb.getWidth() == 0) {
-                return true;
-            }
+            return kb.getWidth() == 0 && !isAbsoluteOrFixed(kb.getPosition());
         }
         return false;
     }
+
+    private static boolean isAbsoluteOrFixed(Position pos) {
+        if (pos == null || pos == pos.getPosition()) {
+            return false;
+        }
+        LayoutManager lm = pos.getLM();
+        if (lm instanceof BlockContainerLayoutManager && ((BlockContainerLayoutManager)lm).isAbsoluteOrFixed()) {
+            return true;
+        }
+        return isAbsoluteOrFixed(pos.getPosition());
+    }
+
 }