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path: root/libraries/fltk/fltk-1.1.10_libpng.patch
blob: 1b6d91ed7e5eae4d33fc3e9bf41e9a5b91add1c7 (plain)
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--- fltk1.1-1.1.10.orig/src/Fl_PNG_Image.cxx
+++ fltk1.1-1.1.10/src/Fl_PNG_Image.cxx
@@ -66,6 +66,8 @@ Fl_PNG_Image::Fl_PNG_Image(const char *p
   png_structp	pp;			// PNG read pointer
   png_infop	info;			// PNG info pointers
   png_bytep	*rows;			// PNG row pointers
+  png_uint_32	width, height;
+  int		bit_depth, color_type, num_trans = 0;
 
 
   // Open the PNG file...
@@ -75,7 +77,7 @@ Fl_PNG_Image::Fl_PNG_Image(const char *p
   pp   = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
   info = png_create_info_struct(pp);
 
-  if (setjmp(pp->jmpbuf))
+  if (setjmp(png_jmpbuf(pp)))
   {
     Fl::warning("PNG file \"%s\" contains errors!\n", png);
     return;
@@ -87,27 +89,33 @@ Fl_PNG_Image::Fl_PNG_Image(const char *p
   // Get the image dimensions and convert to grayscale or RGB...
   png_read_info(pp, info);
 
-  if (info->color_type == PNG_COLOR_TYPE_PALETTE)
+  png_get_IHDR(pp, info, &width, &height, &bit_depth, &color_type,
+	       NULL /* interlace */, NULL /* compress */, NULL /* filter */);
+#ifdef PNG_tRNS_SUPPORTED
+  png_get_tRNS(pp, info, NULL /* trans */, &num_trans, NULL /* values */);
+#endif
+
+  if (color_type == PNG_COLOR_TYPE_PALETTE)
     png_set_expand(pp);
 
-  if (info->color_type & PNG_COLOR_MASK_COLOR)
+  if (color_type & PNG_COLOR_MASK_COLOR)
     channels = 3;
   else
     channels = 1;
 
-  if ((info->color_type & PNG_COLOR_MASK_ALPHA) || info->num_trans)
+  if ((color_type & PNG_COLOR_MASK_ALPHA) || num_trans)
     channels ++;
 
-  w((int)(info->width));
-  h((int)(info->height));
+  w((int)(width));
+  h((int)(height));
   d(channels);
 
-  if (info->bit_depth < 8)
+  if (bit_depth < 8)
   {
     png_set_packing(pp);
     png_set_expand(pp);
   }
-  else if (info->bit_depth == 16)
+  else if (bit_depth == 16)
     png_set_strip_16(pp);
 
 #  if defined(HAVE_PNG_GET_VALID) && defined(HAVE_PNG_SET_TRNS_TO_ALPHA)