Add Fl::screen_scale(int) function to get the scaling factor value of a screen.

This allows to keep class Fl_Screen_Driver away from the public API.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12926 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 6 insertions, 0 deletions

diff --git a/src/Fl.cxx b/src/Fl.cxx
index 6e60e524c..81aecdb25 100644
--- a/src/Fl.cxx
+++ b/src/Fl.cxx
@@ -2110,6 +2110,12 @@ int Fl::get_font_sizes(Fl_Font fnum, int*& sizep) {
   return Fl_Graphics_Driver::default_driver().get_font_sizes(fnum, sizep);
 }
 
+/** Current value of the GUI scaling factor for screen number \p n */
+float Fl::screen_scale(int n) {
+  return Fl::screen_driver()->scale(n);
+}
+
+
 // Pointers you can use to change FLTK to another language.
 // Note: Similar pointers are defined in FL/fl_ask.H and src/fl_ask.cxx
 FL_EXPORT const char* fl_local_shift = Fl::system_driver()->shift_name();