Divide virtual Fl_Screen_Driver::open_display() in a platform-specific part followed by a platform-independent part.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12245 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 17 insertions, 0 deletions

diff --git a/src/Fl_Screen_Driver.cxx b/src/Fl_Screen_Driver.cxx
index 4abecc956..1ccc7ff5f 100644
--- a/src/Fl_Screen_Driver.cxx
+++ b/src/Fl_Screen_Driver.cxx
@@ -502,6 +502,23 @@ float Fl_Screen_Driver::default_scale_factor()
 }
 
 
+void Fl_Screen_Driver::open_display()
+{
+  open_display_platform();
+  static bool been_here = false;
+  if (!been_here) {
+    been_here = true;
+    if (rescalable()) {
+      float factor = default_scale_factor();
+      for (int i = 0; i < screen_count(); i++) scale(i, factor);
+#if defined(FLTK_HIDPI_SUPPORT) || !(defined(WIN32) || defined(__APPLE__))
+      Fl::add_handler(Fl_Screen_Driver::scale_handler);
+#endif
+      Fl_Graphics_Driver::default_driver().scale(factor);
+    }
+  }
+}
+
 //
 // End of "$Id$".
 //