From d1a9624a16d8ba5e6ef393c4a984790e44797c59 Mon Sep 17 00:00:00 2001
From: Andreas Fitzek <andreas.fitzek@iaik.tugraz.at>
Date: Fri, 24 Oct 2014 14:20:54 +0200
Subject: enable Alpha Channel images

---
 .../pdfas/lib/impl/stamping/pdfbox/PDFAsVisualSignatureBuilder.java    | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'pdf-as-pdfbox')

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 2b587d72..927469b1 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
@@ -596,7 +596,8 @@ public class PDFAsVisualSignatureBuilder extends PDVisibleSigBuilder {
 						logger.debug("Scaling image to: " + iwidth + " x "
 								+ iheight);
 
-						if (img.getColorModel().hasAlpha()) {
+						if (img.getAlphaRaster() == null &&
+								img.getColorModel().hasAlpha()) {
 							img = ImageUtils.removeAlphaChannel(img);
 						}
 						//img = ImageUtils.convertRGBAToIndexed(img); 
-- 
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