From 0a291a645e91294553c3171b9291fbf60ee3fae2 Mon Sep 17 00:00:00 2001
From: Andreas Fitzek <andreas.fitzek@iaik.tugraz.at>
Date: Fri, 24 Oct 2014 11:47:07 +0200
Subject: Remove support for Alpha Images

---
 .../java/at/gv/egiz/pdfas/common/utils/ImageUtils.java   | 16 ++++++++++++----
 .../stamping/pdfbox/PDFAsVisualSignatureBuilder.java     |  4 ++--
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/ImageUtils.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/ImageUtils.java
index 5dd0f636..b426e1ce 100644
--- a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/ImageUtils.java
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/ImageUtils.java
@@ -23,11 +23,9 @@
  ******************************************************************************/
 package at.gv.egiz.pdfas.common.utils;
 
-import java.awt.AlphaComposite;
 import java.awt.Color;
 import java.awt.Dimension;
 import java.awt.Graphics;
-import java.awt.Graphics2D;
 import java.awt.image.BufferedImage;
 import java.awt.image.ColorModel;
 import java.awt.image.IndexColorModel;
@@ -53,7 +51,7 @@ public class ImageUtils {
 			.getLogger(ImageUtils.class);
 	
 	public static BufferedImage removeAlphaChannel(BufferedImage src) {
-		if (src.getColorModel().hasAlpha())
+		/*if (src.getColorModel().hasAlpha())
         {
             // extract the alpha information
            // WritableRaster alphaRaster = src.
@@ -69,7 +67,17 @@ public class ImageUtils {
             g.dispose();
             return image;
         }
-		return src;
+		return src;*/
+		
+		BufferedImage rgbImage = new BufferedImage(src.getWidth(), src.getHeight(), BufferedImage.TYPE_3BYTE_BGR);
+        for (int x = 0; x < src.getWidth(); ++x)
+        {
+            for (int y = 0; y < src.getHeight(); ++y)
+            {
+                rgbImage.setRGB(x, y, src.getRGB(x, y) & 0xFFFFFF);
+            }
+        }
+        return rgbImage;
 	}
 	
 	public static BufferedImage convertRGBAToIndexed(BufferedImage src) {
diff --git a/pdf-as-pdfbox/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/pdfbox/PDFAsVisualSignatureBuilder.java b/pdf-as-pdfbox/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/pdfbox/PDFAsVisualSignatureBuilder.java
index f5776c0a..2b587d72 100644
--- a/pdf-as-pdfbox/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/pdfbox/PDFAsVisualSignatureBuilder.java
+++ b/pdf-as-pdfbox/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/pdfbox/PDFAsVisualSignatureBuilder.java
@@ -596,10 +596,10 @@ public class PDFAsVisualSignatureBuilder extends PDVisibleSigBuilder {
 						logger.debug("Scaling image to: " + iwidth + " x "
 								+ iheight);
 
-						if (img.getAlphaRaster() == null
-								&& img.getColorModel().hasAlpha()) {
+						if (img.getColorModel().hasAlpha()) {
 							img = ImageUtils.removeAlphaChannel(img);
 						}
+						//img = ImageUtils.convertRGBAToIndexed(img); 
 
 						PDXObjectImage pdImage = new PDPixelMap(template, img);
 
-- 
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