Fix endian problem with fl_read_image() and QuickDraw on Intel-based Macs.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@5544 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

CHANGES

@@ -1,5 +1,7 @@
 CHANGES IN FLTK 1.1.8
 
+	- fl_read_image() was broken on Intel-based Macs (STR
+	  #1490)
 	- Fl_Progress was using the wrong width to calculate 
 	  progress (STR #1492)
 	- Documentation fixes (STR #1454, STR #1455, STR #1456,

src/fl_read_image_mac.cxx

@@ -3,7 +3,7 @@
 //
 // WIN32 image reading routines for the Fast Light Tool Kit (FLTK).
 //
-// Copyright 1998-2005 by Bill Spitzak and others.
+// Copyright 1998-2006 by Bill Spitzak and others.
 //
 // This library is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Library General Public
@@ -108,12 +108,20 @@ fl_read_image(uchar *p,		// I - Pixel buffer or NULL to allocate
 
   // Copy the image from the off-screen buffer to the memory buffer.
   for (idy = 0, pdst = p; idy < h; idy ++)
+#ifdef __i386__
+    for (idx = 0, psrc = base + idy * rowBytes; idx < w; idx ++, psrc += 4, pdst += d) {
+      pdst[0] = psrc[2];
+      pdst[1] = psrc[1];
+      pdst[2] = psrc[0];
+    }
+#else
     for (idx = 0, psrc = base + idy * rowBytes + 1; idx < w; idx ++, psrc += 4, pdst += d) {
       pdst[0] = psrc[0];
       pdst[1] = psrc[1];
       pdst[2] = psrc[2];
     }
-
+#endif // __i386__
+     
   // Unlock and delete the off-screen buffer, then return...
   UnlockPixels(pm);
   fl_delete_offscreen(osbuffer);