Add a bunch of missing Path functions

Part of #252

sky/engine/core/painting/CanvasPath.h

@@ -9,6 +9,7 @@
 
 #include "sky/engine/core/painting/Offset.h"
 #include "sky/engine/core/painting/Rect.h"
+#include "sky/engine/core/painting/RRect.h"
 #include "sky/engine/tonic/dart_wrappable.h"
 #include "sky/engine/wtf/PassRefPtr.h"
 #include "sky/engine/wtf/RefCounted.h"
@@ -29,25 +30,25 @@ public:
         return adoptRef(new CanvasPath);
     }
 
-    void moveTo(float x, float y)
-    {
-        m_path.moveTo(x, y);
-    }
-
-    void lineTo(float x, float y)
-    {
-        m_path.lineTo(x, y);
-    }
-
-    void arcTo(const Rect& rect, float startAngle, float sweepAngle, bool forceMoveTo)
-    {
+    void moveTo(float x, float y) { m_path.moveTo(x, y); }
+    void relativeMoveTo(float x, float y) { m_path.rMoveTo(x, y); }
+    void lineTo(float x, float y) { m_path.lineTo(x, y); }
+    void relativeLineTo(float x, float y) { m_path.rLineTo(x, y); }
+    void quadraticBezierTo(float x1, float y1, float x2, float y2) { m_path.quadTo(x1, y1, x2, y2); }
+    void relativeQuadraticBezierTo(float x1, float y1, float x2, float y2) { m_path.rQuadTo(x1, y1, x2, y2); }
+    void cubicTo(float x1, float y1, float x2, float y2, float x3, float y3) { m_path.cubicTo(x1, y1, x2, y2, x3, y3); }
+    void relativeCubicTo(float x1, float y1, float x2, float y2, float x3, float y3) { m_path.rCubicTo(x1, y1, x2, y2, x3, y3); }
+    void conicTo(float x1, float y1, float x2, float y2, float w) { m_path.conicTo(x1, y1, x2, y2, w); }
+    void relativeConicTo(float x1, float y1, float x2, float y2, float w) { m_path.rConicTo(x1, y1, x2, y2, w); }
+    void arcTo(const Rect& rect, float startAngle, float sweepAngle, bool forceMoveTo) {
         m_path.arcTo(rect.sk_rect, startAngle*180.0/M_PI, sweepAngle*180.0/M_PI, forceMoveTo);
     }
-
-    void addOval(const Rect& oval)
-    {
-        m_path.addOval(oval.sk_rect);
+    void addRect(const Rect& rect) { m_path.addRect(rect.sk_rect); }
+    void addOval(const Rect& oval) { m_path.addOval(oval.sk_rect); }
+    void addArc(const Rect& rect, float startAngle, float sweepAngle) {
+        m_path.addArc(rect.sk_rect, startAngle*180.0/M_PI, sweepAngle*180.0/M_PI);
     }
+    void addRRect(const RRect& rrect) { m_path.addRRect(rrect.sk_rrect); }
 
     void close()
     {

sky/engine/core/painting/Path.idl

@@ -7,11 +7,23 @@
   ImplementedAs=CanvasPath,
 ] interface Path {
     void moveTo(float x, float y);
+    void relativeMoveTo(float dx, float dy);
     void lineTo(float x, float y);
+    void relativeLineTo(float dx, float dy);
+    void quadraticBezierTo(float x1, float y1, float x2, float y2);
+    void relativeQuadraticBezierTo(float x1, float y1, float x2, float y2);
+    void cubicTo(float x1, float y1, float x2, float y2, float x3, float y3);
+    void relativeCubicTo(float x1, float y1, float x2, float y2, float x3, float y3);
+    void conicTo(float x1, float y1, float x2, float y2, float w);
+    void relativeConicTo(float x1, float y1, float x2, float y2, float w);
     void arcTo(Rect rect, float startAngle, float sweepAngle, boolean forceMoveTo); // angles in radians
+
+    void addRect(Rect rect);
     void addOval(Rect oval);
-    void close();
+    void addArc(Rect oval, float startAngle, float sweepAngle);  // angles in radians
+    void addRRect(RRect rrect);
 
+    void close();
     void reset();
 
     Path shift(Offset offset);