Author: matt
Date: 2010-11-14 13:17:31 -0800 (Sun, 14 Nov 2010)
New Revision: 7832
Log:
Update lib png access (STR #2442)

Modified:
   branches/branch-1.3/CHANGES
   branches/branch-1.3/src/Fl_PNG_Image.cxx

Modified: branches/branch-1.3/CHANGES
===================================================================
--- branches/branch-1.3/CHANGES 2010-11-14 17:28:48 UTC (rev 7831)
+++ branches/branch-1.3/CHANGES 2010-11-14 21:17:31 UTC (rev 7832)
@@ -1,5 +1,6 @@
 CHANGES IN FLTK 1.3.0
 
+       - Update lib png access (STR #2442)
        - Fixed OpenGL hide/show issue in OS X (STR #2260)
        - Added visual feedback for button shortcuts (STR #2372)
        - Fixed internationalisation of menus using FLuid (STR #2246)

Modified: branches/branch-1.3/src/Fl_PNG_Image.cxx
===================================================================
--- branches/branch-1.3/src/Fl_PNG_Image.cxx    2010-11-14 17:28:48 UTC (rev 
7831)
+++ branches/branch-1.3/src/Fl_PNG_Image.cxx    2010-11-14 21:17:31 UTC (rev 
7832)
@@ -78,7 +78,7 @@
   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;
@@ -90,27 +90,29 @@
   // Get the image dimensions and convert to grayscale or RGB...
   png_read_info(pp, info);
 
-  if (info->color_type == PNG_COLOR_TYPE_PALETTE)
+  if (png_get_color_type(pp, info) == PNG_COLOR_TYPE_PALETTE)
     png_set_expand(pp);
 
-  if (info->color_type & PNG_COLOR_MASK_COLOR)
+  if (png_get_color_type(pp, info) & PNG_COLOR_MASK_COLOR)
     channels = 3;
   else
     channels = 1;
 
-  if ((info->color_type & PNG_COLOR_MASK_ALPHA) || info->num_trans)
-    channels ++;
+  int num_trans;
+  png_get_tRNS(pp, info, 0, &num_trans, 0);
+  if ((png_get_color_type(pp, info) & PNG_COLOR_MASK_ALPHA) || (num_trans != 
0))
+      channels ++;
 
-  w((int)(info->width));
-  h((int)(info->height));
+  w((int)(png_get_image_width(pp, info)));
+  h((int)(png_get_image_height(pp, info)));
   d(channels);
 
-  if (info->bit_depth < 8)
+  if (png_get_bit_depth(pp, info) < 8)
   {
     png_set_packing(pp);
     png_set_expand(pp);
   }
-  else if (info->bit_depth == 16)
+  else if (png_get_bit_depth(pp, info) == 16)
     png_set_strip_16(pp);
 
 #  if defined(HAVE_PNG_GET_VALID) && defined(HAVE_PNG_SET_TRNS_TO_ALPHA)

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