From: pabs3 <pabs3@1f10aa63-cdf2-0310-b900-c93c546f37ac>
Date: Tue, 11 Nov 2008 04:47:50 +0000 (+0000)
Subject: Apply 2198806: add support for alpha in paletted PNG files in the PNG importer. Patch... 
X-Git-Url: https://git.pterodactylus.net/?a=commitdiff_plain;h=5908ecaf8d0b7a2b8b3b56d61c2d4a8a86deb72c;p=synfig.git

Apply 2198806: add support for alpha in paletted PNG files in the PNG importer. Patch by wtachi (hyperwiz)

git-svn-id: https://synfig.svn.sourceforge.net/svnroot/synfig@2181 1f10aa63-cdf2-0310-b900-c93c546f37ac
---

diff --git a/synfig-core/trunk/AUTHORS b/synfig-core/trunk/AUTHORS
index f7ec827..0c302fa 100644
--- a/synfig-core/trunk/AUTHORS
+++ b/synfig-core/trunk/AUTHORS
@@ -15,6 +15,7 @@ Martin Michlmayr
 Carlos López González (genete)
 Gerco Ballintijn
 Daniel Hornung (rubikcube)
+Wtachi (hyperwiz)
 
 Translators:
 
diff --git a/synfig-core/trunk/src/modules/mod_png/mptr_png.cpp b/synfig-core/trunk/src/modules/mod_png/mptr_png.cpp
index a0b021a..f0fcb86 100644
--- a/synfig-core/trunk/src/modules/mod_png/mptr_png.cpp
+++ b/synfig-core/trunk/src/modules/mod_png/mptr_png.cpp
@@ -309,11 +309,14 @@ png_mptr::png_mptr(const char *file_name)
 				float r=gamma().r_U8_to_F32((unsigned char)png_ptr->palette[row_pointers[y][x]].red);
 				float g=gamma().g_U8_to_F32((unsigned char)png_ptr->palette[row_pointers[y][x]].green);
 				float b=gamma().b_U8_to_F32((unsigned char)png_ptr->palette[row_pointers[y][x]].blue);
+				float a=1.0;
+				if(info_ptr->valid & PNG_INFO_tRNS)
+				    a = (float)(unsigned char)png_ptr->trans[row_pointers[y][x]]*(1.0/255.0);
 				surface_buffer[y][x]=Color(
 					r,
 					g,
 					b,
-					1.0
+					a
 				);
 			}
 		break;