Merge pull request #25 from moxionio/moxion

Added support for Apache PDFBox TilingPaint.

src/main/java/de/rototor/pdfbox/graphics2d/PdfBoxGraphics2DPaintApplier.java

@@ -27,6 +27,7 @@
 import java.awt.geom.Rectangle2D;
 import java.awt.image.BufferedImage;
 import java.io.IOException;
+import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.util.List;
 import java.util.*;
@@ -149,6 +150,9 @@ else if (simpleName.equals("PatternPaint"))
         {
             applyPatternPaint(paint, state);
         }
+        else if(simpleName.equals("TilingPaint")) {
+            applyTilingPaint(paint, state);
+        }
         else if (paint instanceof GradientPaint)
         {
             return shadingCache.makeUnqiue(buildGradientShading((GradientPaint) paint, state));
@@ -248,6 +252,23 @@ private void applyPatternPaint(Paint paint, PaintApplierState state) throws IOEx
         state.contentStream.setStrokingColor(patternColor);
     }
 
+    /*
+     * Apache PDFBox Tiling Paint
+     */
+    private void applyTilingPaint(Paint paint, PaintApplierState state)
+    {
+        try
+        {
+            Paint tilingPaint = getPrivateFieldValue(paint, "paint");
+            applyPaint(tilingPaint, state);
+        }
+        catch (Exception e)
+        {
+            System.err.println("PdfBoxGraphics2DPaintApplier error while drawing Tiling Paint");
+            e.printStackTrace();
+        }
+    }
+
     private void applyComposite(PaintApplierState state)
     {
         /*
@@ -828,6 +849,41 @@ protected static <T> T getPropertyValue(Object obj, String propertyGetter)
         }
     }
 
+    /**
+     * Get the value of a private field from the specified object.
+     *
+     * @param obj The object containing the field.
+     * @param fieldName The name of the field.
+     * @param <T> The field type.
+     * @return The private field value.
+     */
+    @SuppressWarnings({ "unchecked", "WeakerAccess" })
+    protected static <T> T getPrivateFieldValue(Object obj, String fieldName)
+    {
+        try
+        {
+            Class<?> c = obj.getClass();
+            while (c != null)
+            {
+                try
+                {
+                    Field f = c.getDeclaredField(fieldName);
+                    f.setAccessible(true);
+                    return (T) f.get(obj);
+                }
+                catch (NoSuchFieldException ignored)
+                {
+                }
+                c = c.getSuperclass();
+            }
+            throw new NullPointerException("Field " + fieldName + " not found!");
+        }
+        catch (Exception e)
+        {
+            throw new RuntimeException(e);
+        }
+    }
+
     private static abstract class COSResourceCacheBase<TObject extends COSObjectable>
     {
         private Map<Integer, List<TObject>> states = new HashMap<Integer, List<TObject>>();