line profile is now cached by being a member of Painter, as was suggested by Maxim, it's too heavy an object for being created on the fly

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10905 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/servers/app/Painter.h

@@ -184,6 +184,7 @@ class Painter {
 			void				_RebuildClipping();
 
 			void				_UpdateFont();
+			void				_UpdateLineWidth();
 
 								// drawing functions stroke/fill
 			void				_DrawTriangle(	BPoint pt1,
@@ -229,6 +230,8 @@ class Painter {
 	font_renderer_solid_type*	fFontRendererSolid;
 	font_renderer_bin_type*		fFontRendererBin;
 
+	agg::line_profile_aa		fLineProfile;
+
 	// for internal coordinate rounding/transformation,
 	// does not concern rendering
 	bool						fSubpixelPrecise;