Fl_SVG_Image class: add support for compressed .svgz image files.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12475 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 15 insertions, 0 deletions

diff --git a/src/drivers/Posix/Fl_Posix_System_Driver.cxx b/src/drivers/Posix/Fl_Posix_System_Driver.cxx
index c2576b268..f603c2d17 100644
--- a/src/drivers/Posix/Fl_Posix_System_Driver.cxx
+++ b/src/drivers/Posix/Fl_Posix_System_Driver.cxx
@@ -34,6 +34,9 @@
 #include <pwd.h>
 #include <unistd.h>
 #include <time.h>
+#if defined(HAVE_LIBZ)
+# include <zlib.h>
+#endif
 
 //
 // Define missing POSIX/XPG4 macros as needed...
@@ -99,6 +102,18 @@ void Fl_Posix_System_Driver::gettime(time_t *sec, int *usec) {
   *usec = tv.tv_usec;
 }
 
+void* Fl_Posix_System_Driver::gzopen(const char *fname, const char *mode) {
+#if defined(HAVE_LIBZ)
+  FILE *in = fl_fopen(fname, mode);
+  if (!in) return NULL;
+  int fd = dup(fileno(in));
+  fclose(in);
+  return gzdopen(fd, mode);
+#else
+  return NULL;
+#endif
+}
+
 //
 // End of "$Id$".
 //