X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7395c7d66926c4006934d2b4bc58875d53670427..0847e36eff0512bf3c50c01e8d9dcff5e693ada5:/interface/wx/graphics.h?ds=sidebyside

diff --git a/interface/wx/graphics.h b/interface/wx/graphics.h
index ac78c4cae0..10c2ea7485 100644
--- a/interface/wx/graphics.h
+++ b/interface/wx/graphics.h
@@ -22,18 +22,24 @@ class wxGraphicsPath : public wxGraphicsObject
 {
 public:
     /**
-        Adds an arc of a circle centering at (@a x,@a y) with radius (@a r)
-        from @a startAngle to @a endAngle.
+        Adds an arc of a circle.
+
+        The circle is defined by the coordinates of its centre (@a x, @a y) or
+        @a c and its radius @a r. The arc goes from the starting angle @a
+        startAngle to @a endAngle either clockwise or counter-clockwise
+        depending on the value of @a clockwise argument.
+
+        The angles are measured in radians but, contrary to the usual
+        mathematical convention, are always @e clockwise from the horizontal
+        axis.
     */
+    //@{
     virtual void AddArc(wxDouble x, wxDouble y, wxDouble r,
                         wxDouble startAngle, wxDouble endAngle,
                         bool clockwise);
-    /**
-        Adds an arc of a circle centering at @a c with radius (@a r)
-        from @a startAngle to @a endAngle.
-    */
     void AddArc(const wxPoint2DDouble& c, wxDouble r,
                 wxDouble startAngle, wxDouble endAngle, bool clockwise);
+    //@}
 
     /**
         Appends a an arc to two tangents connecting (current) to (@a x1,@a y1)
@@ -213,29 +219,25 @@ enum wxAntialiasMode
 
     The description give a short equation on how the values of a resulting
     pixel are calculated.
-    @R = Result, @S = Source, @D = Destination, colors premultiplied with alpha
-    @Ra, @Sa, @Da their alpha components
+    @e R = Result, @e S = Source, @e D = Destination, colors premultiplied with alpha
+    @e Ra, @e Sa, @e Da their alpha components
 */
 enum wxCompositionMode
 {
-    
-    /** classic Porter-Duff compositions */
-    wxCOMPOSITION_CLEAR, /**< @R = 0 */
-    wxCOMPOSITION_SOURCE, /**< @R = S */
-    wxCOMPOSITION_OVER, /**< @R = @S + @D*(1 - @Sa) */
-    wxCOMPOSITION_IN, /**< @R = @S*@Da */
-    wxCOMPOSITION_OUT, /**< @R = @S*(1 - @Da) */
-    wxCOMPOSITION_ATOP, /**< @R = @S*@Da + @D*(1 - @Sa) */
-
-    wxCOMPOSITION_DEST, /**< @R = @D, essentially a noop */
-    wxCOMPOSITION_DEST_OVER, /**< @R = @S*(1 - @Da) + @D */
-    wxCOMPOSITION_DEST_IN, /**< @R = @D*@Sa */
-    wxCOMPOSITION_DEST_OUT, /**< @R = @D*(1 - @Sa) */
-    wxCOMPOSITION_DEST_ATOP, /**< @R = @S*(1 - @Da) + @D*@Sa */
-    wxCOMPOSITION_XOR, /**< @R = @S*(1 - @Da) + @D*(1 - @Sa) */
-    
-    /** mathematical compositions */
-    wxCOMPOSITION_ADD, /**< @R = @S + @D */
+    wxCOMPOSITION_CLEAR, /**< @e R = 0 */
+    wxCOMPOSITION_SOURCE, /**< @e R = S */
+    wxCOMPOSITION_OVER, /**< @e R = @e S + @e D*(1 - @e Sa) */
+    wxCOMPOSITION_IN, /**< @e R = @e S*@e Da */
+    wxCOMPOSITION_OUT, /**< @e R = @e S*(1 - @e Da) */
+    wxCOMPOSITION_ATOP, /**< @e R = @e S*@e Da + @e D*(1 - @e Sa) */
+
+    wxCOMPOSITION_DEST, /**< @e R = @e D, essentially a noop */
+    wxCOMPOSITION_DEST_OVER, /**< @e R = @e S*(1 - @e Da) + @e D */
+    wxCOMPOSITION_DEST_IN, /**< @e R = @e D*@e Sa */
+    wxCOMPOSITION_DEST_OUT, /**< @e R = @e D*(1 - @e Sa) */
+    wxCOMPOSITION_DEST_ATOP, /**< @e R = @e S*(1 - @e Da) + @e D*@e Sa */
+    wxCOMPOSITION_XOR, /**< @e R = @e S*(1 - @e Da) + @e D*(1 - @e Sa) */
+    wxCOMPOSITION_ADD, /**< @e R = @e S + @e D */
 };
 
 
@@ -704,6 +706,12 @@ public:
     */
     virtual wxGraphicsContext* CreateContextFromNativeWindow(void* window) = 0;
 
+    /**
+        Creates a wxGraphicsContext that can be used for measuring texts only. 
+        No drawing commands are allowed.
+    */
+    virtual wxGraphicsContext * CreateMeasuringContext() = 0;
+
     /**
         Creates a native graphics font from a wxFont and a text colour.
     */