diff options
Diffstat (limited to 'FL/Fl.H')
| -rw-r--r-- | FL/Fl.H | 17 |
1 files changed, 16 insertions, 1 deletions
@@ -252,6 +252,10 @@ public: /// if the GTK library is available on the platform (linux/unix only). /// When switched off, GTK file dialogs aren't used even if the GTK library is available. OPTION_FNFC_USES_GTK, + /// When switched on (default), the library shows in a transient yellow window the zoom factor + /// value. + /// When switched off, no such window gets displayed. + OPTION_SHOW_SCALING, // don't change this, leave it always as the last element /// For internal use only. OPTION_LAST @@ -989,7 +993,15 @@ int main() { /** \defgroup fl_screen Screen functions - fl global screen functions declared in <FL/Fl.H> + fl global screen functions declared in <FL/Fl.H>. + FLTK supports high-DPI screens using a screen scaling factor. + The scaling factor value can be changed by typing ctrl-/+/-/0/ + (cmd-/+/-/0/ under MacOS). FLTK sends the FL_ZOOM_EVENT when the + factor value is changed, to which a callback can be associated with Fl::add_handler(). + By default, FLTK also displays the new scaling factor value in a yellow, transient window. + This can be changed with Fl::option(OPTION_SHOW_SCALING, 0). + The scaling factor value is programmatically get and set with the Fl::screen_scale() functions. + @{ */ static int x(); // via screen driver static int y(); // via screen driver @@ -1009,6 +1021,9 @@ int main() { static void screen_work_area(int &X, int &Y, int &W, int &H, int n); // via screen driver static void screen_work_area(int &X, int &Y, int &W, int &H); // via screen driver static float screen_scale(int n); // via screen driver + static void screen_scale(int n, float factor); // via screen driver + static int screen_scaling_supported(); + /** @} */ |