X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/999836aacade840a5d9a0cbb5fad7b1d4de62c93..a290fa5a7deebe9d96c0c0089d18e27d4bd9b624:/src/common/imagpng.cpp?ds=sidebyside

diff --git a/src/common/imagpng.cpp b/src/common/imagpng.cpp
index d0da8f6111..3bf12e257d 100644
--- a/src/common/imagpng.cpp
+++ b/src/common/imagpng.cpp
@@ -160,12 +160,14 @@ struct wxPNGInfoStruct
 extern "C"
 {
 
-void PNGLINKAGEMODE _PNG_stream_reader( png_structp png_ptr, png_bytep data, png_size_t length )
+void PNGLINKAGEMODE wx_PNG_stream_reader( png_structp png_ptr, png_bytep data,
+                                          png_size_t length )
 {
     WX_PNG_INFO(png_ptr)->stream.in->Read(data, length);
 }
 
-void PNGLINKAGEMODE _PNG_stream_writer( png_structp png_ptr, png_bytep data, png_size_t length )
+void PNGLINKAGEMODE wx_PNG_stream_writer( png_structp png_ptr, png_bytep data,
+                                          png_size_t length )
 {
     WX_PNG_INFO(png_ptr)->stream.out->Write(data, length);
 }
@@ -540,7 +542,7 @@ wxPNGHandler::LoadFile(wxImage *image,
 
     // NB: please see the comment near wxPNGInfoStruct declaration for
     //     explanation why this line is mandatory
-    png_set_read_fn( png_ptr, &wxinfo, _PNG_stream_reader);
+    png_set_read_fn( png_ptr, &wxinfo, wx_PNG_stream_reader);
 
     info_ptr = png_create_info_struct( png_ptr );
     if (!info_ptr)
@@ -568,7 +570,7 @@ wxPNGHandler::LoadFile(wxImage *image,
         png_set_expand( png_ptr );
     png_set_filler( png_ptr, 0xff, PNG_FILLER_AFTER );
 
-    image->Create( (int)width, (int)height );
+    image->Create((int)width, (int)height, false /* no need to init pixels */);
 
     if (!image->Ok())
         goto error;
@@ -667,7 +669,7 @@ bool wxPNGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbos
 
     // NB: please see the comment near wxPNGInfoStruct declaration for
     //     explanation why this line is mandatory
-    png_set_write_fn( png_ptr, &wxinfo, _PNG_stream_writer, NULL);
+    png_set_write_fn( png_ptr, &wxinfo, wx_PNG_stream_writer, NULL);
 
     png_set_IHDR( png_ptr, info_ptr, image->GetWidth(), image->GetHeight(), 8,
         PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE,
@@ -698,7 +700,11 @@ bool wxPNGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbos
             data[(x << 2) + 0] = *ptr++;
             data[(x << 2) + 1] = *ptr++;
             data[(x << 2) + 2] = *ptr++;
-            if (( !image->HasMask() ) || \
+            if ( image->HasAlpha() )
+            {
+                data[(x << 2) + 3] = image->GetAlpha(x, y);
+            }
+            else if (( !image->HasMask() ) || \
                 (data[(x << 2) + 0] != image->GetMaskRed()) || \
                 (data[(x << 2) + 1] != image->GetMaskGreen()) || \
                 (data[(x << 2) + 2] != image->GetMaskBlue()))