From 5680cc22992b59533dc2fc4f9bbbe6aa1ed5f9a6 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Thu, 5 May 2016 19:29:14 +0530
Subject: [PATCH] Fix new border removal for transparent PNG files not working

---
 src/calibre/utils/imageops/imageops.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/utils/imageops/imageops.cpp b/src/calibre/utils/imageops/imageops.cpp
index 1e575f5166..7808c5840d 100644
--- a/src/calibre/utils/imageops/imageops.cpp
+++ b/src/calibre/utils/imageops/imageops.cpp
@@ -46,7 +46,7 @@ QImage* remove_borders(const QImage &image, double fuzz) {
 	unsigned int width = img.width(), height = img.height();
 	unsigned int top_border = 0, bottom_border = 0, left_border = 0, right_border = 0;
 
-	if (img.format() != QImage::Format_RGB32) {
+	if (img.format() != QImage::Format_RGB32 && img.format() != QImage::Format_ARGB32) {
 		img = img.convertToFormat(QImage::Format_RGB32);
 		if (img.isNull()) { PyErr_NoMemory(); return NULL; }
 	}