Windows platform: use GDI+ to antialias oblique lines and curves.

2 files changed, 9 insertions, 0 deletions

diff --git a/src/drivers/Quartz/Fl_Quartz_Graphics_Driver.H b/src/drivers/Quartz/Fl_Quartz_Graphics_Driver.H
index 4f868238c..f59a39d79 100644
--- a/src/drivers/Quartz/Fl_Quartz_Graphics_Driver.H
+++ b/src/drivers/Quartz/Fl_Quartz_Graphics_Driver.H
@@ -172,6 +172,8 @@ protected:
   virtual void overlay_rect(int x, int y, int w , int h);
   virtual float override_scale();
   virtual void restore_scale(float);
+  virtual void antialias(int state);
+  virtual int antialias();
 };
 
 class Fl_Quartz_Printer_Graphics_Driver : public Fl_Quartz_Graphics_Driver {
diff --git a/src/drivers/Quartz/Fl_Quartz_Graphics_Driver.cxx b/src/drivers/Quartz/Fl_Quartz_Graphics_Driver.cxx
index 6dbad2684..c18f7c300 100644
--- a/src/drivers/Quartz/Fl_Quartz_Graphics_Driver.cxx
+++ b/src/drivers/Quartz/Fl_Quartz_Graphics_Driver.cxx
@@ -52,6 +52,13 @@ Fl_Graphics_Driver *Fl_Graphics_Driver::newMainGraphicsDriver()
   return new Fl_Quartz_Graphics_Driver();
 }
 
+void Fl_Quartz_Graphics_Driver::antialias(int state) {
+}
+
+int Fl_Quartz_Graphics_Driver::antialias() {
+  return 1;
+}
+
 Fl_Quartz_Graphics_Driver::Fl_Quartz_Graphics_Driver() : Fl_Graphics_Driver(), gc_(NULL) {
   quartz_line_width_ = 1.f;
   quartz_line_cap_ = kCGLineCapButt;