wxGTK: Fixed printing to use fonts sizes adjustment consistent with wxMSW. In

particular, screen resolution no longer affects text size in printed output
when using wx's map-screen-to-paper approach to printing.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@55927 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/dc.h

@@ -466,7 +466,6 @@ public:
     bool GetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
         { return DoGetPartialTextExtents(text, widths); }
 
-
     // size and resolution
     // -------------------
 
@@ -793,6 +792,13 @@ protected:
     virtual void DoDrawSpline(wxList *points);
 #endif
 
+#if wxABI_VERSION >= 20810
+    // returns adjustment factor for converting wxFont "point size"; in wx
+    // it is point size on screen and needs to be multiplied by this value
+    // for rendering on higher-resolution DCs such as printer ones
+    static float GetFontPointSizeAdjustment(float dpi);
+#endif
+
 protected:
     // unset clipping variables (after clipping region was destroyed)
     void ResetClipping()