1 files changed, 5 insertions, 2 deletions

@@ -1,6 +1,7 @@
 #include "subway_map.h"
 
 #include <wx/dcbuffer.h>
+#include <wx/dcgraph.h>
 
 #include <sstream>
 
@@ -185,8 +186,10 @@ void SubwayMap::OnPaint(wxPaintEvent &event) {
           GetSize().GetHeight() * map_image_.GetWidth() / render_width_ / zoom_;
     }
 
-    dc.StretchBlit(dst_x, dst_y, dst_w, dst_h, &rendered_dc, src_x, src_y,
-                   src_w, src_h);
+    wxGCDC gcdc(dc);
+    gcdc.GetGraphicsContext()->SetInterpolationQuality(wxINTERPOLATION_GOOD);
+    gcdc.StretchBlit(dst_x, dst_y, dst_w, dst_h, &rendered_dc, src_x, src_y,
+                     src_w, src_h);
   }
 
   if (hovered_item_) {