translate 0.5 offset into user space before applying translation, see #11769, see...

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63590 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/osx/carbon/graphics.cpp b/src/osx/carbon/graphics.cpp
index 03fd9e2c50c19fd0c05397a6c1190fa0a3538478..99e1921ebfc6c52d4eb61a94f76cbdb310173551 100644 (file)
--- a/src/osx/carbon/graphics.cpp
+++ b/src/osx/carbon/graphics.cpp
@@ -1461,14 +1461,18 @@ public :
         m_cg = cg;
         m_offset = offset;
         if ( m_offset )
-            CGContextTranslateCTM( m_cg, (CGFloat) 0.5, (CGFloat) 0.5 );
+        {
+            m_userOffset = CGContextConvertSizeToUserSpace( m_cg, CGSizeMake( 0.5 , 0.5 ) );
+            CGContextTranslateCTM( m_cg, m_userOffset.width , m_userOffset.height );
+        }
     }
     ~wxQuartzOffsetHelper( )
     {
         if ( m_offset )
-            CGContextTranslateCTM( m_cg, (CGFloat) -0.5, (CGFloat) -0.5 );
+            CGContextTranslateCTM( m_cg, -m_userOffset.width , -m_userOffset.height );
     }
 public :
+    CGSize m_userOffset;
     CGContextRef m_cg;
     bool m_offset;
 } ;