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From til...@apache.org
Subject svn commit: r1763806 - /pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/rendering/PageDrawer.java
Date Fri, 07 Oct 2016 17:30:22 GMT
Author: tilman
Date: Fri Oct  7 17:30:22 2016
New Revision: 1763806

URL: http://svn.apache.org/viewvc?rev=1763806&view=rev
Log:
PDFBOX-3000: flip transparency group image when rendering it in the first level of a tiling
pattern

Modified:
    pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/rendering/PageDrawer.java

Modified: pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/rendering/PageDrawer.java
URL: http://svn.apache.org/viewvc/pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/rendering/PageDrawer.java?rev=1763806&r1=1763805&r2=1763806&view=diff
==============================================================================
--- pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/rendering/PageDrawer.java (original)
+++ pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/rendering/PageDrawer.java Fri Oct
 7 17:30:22 2016
@@ -94,6 +94,10 @@ public class PageDrawer extends PDFGraph
     private PDRectangle pageSize;
 
     private int pageRotation;
+    
+    // whether image of a transparency group must be flipped
+    // needed when in a tiling pattern
+    private boolean flipTG = false;
 
     // clipping winding rule used for the clipping path
     private int clipWindingRule = -1;
@@ -213,10 +217,14 @@ public class PageDrawer extends PDFGraph
 
         Area oldLastClip = lastClip;
         lastClip = null;
+        
+        boolean oldFlipTG = flipTG;
+        flipTG = true;
 
         setRenderingHints();
         processTilingPattern(pattern, color, colorSpace, patternMatrix);
-
+        
+        flipTG = oldFlipTG;
         graphics = oldGraphics;
         linePath = oldLinePath;
         lastClip = oldLastClip;
@@ -1064,6 +1072,12 @@ public class PageDrawer extends PDFGraph
         // adjust (x,y) at the initial scale + cropbox
         graphics.translate((x - pageSize.getLowerLeftX()) * xScale, (y + pageSize.getLowerLeftY())
* yScale);
 
+        if (flipTG)
+        {
+            graphics.translate(0, group.getImage().getHeight());
+            graphics.scale(1, -1);
+        }
+
         PDSoftMask softMask = getGraphicsState().getSoftMask();
         if (softMask != null)
         {
@@ -1147,6 +1161,9 @@ public class PageDrawer extends PDFGraph
             g.translate(0, image.getHeight());
             g.scale(1, -1);
 
+            boolean oldFlipTG = flipTG;
+            flipTG = false;
+
             // apply device transform (DPI)
             // the initial translation is ignored, because we're not writing into the initial
graphics device
             g.transform(dpiTransform);
@@ -1177,6 +1194,7 @@ public class PageDrawer extends PDFGraph
             }
             finally 
             {
+                flipTG = oldFlipTG;
                 lastClip = lastClipOriginal;                
                 graphics.dispose();
                 graphics = g2dOriginal;



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