Plumb drawArc to SkDevice

include/core/SkCanvas.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkCanvas_DEFINED
 #define SkCanvas_DEFINED
 
@@ skipping 721 matching lines @@
         @param radius   The radius of the cirle to be drawn
         @param paint    The paint used to draw the circle
     */
     void drawCircle(SkScalar cx, SkScalar cy, SkScalar radius,
                     const SkPaint& paint);
 
     /** Draw the specified arc, which will be scaled to fit inside the
         specified oval. If the sweep angle is >= 360, then the oval is drawn
         completely. Note that this differs slightly from SkPath::arcTo, which
         treats the sweep angle mod 360.
-        @param oval The bounds of oval used to define the shape of the arc
+        @param oval The bounds of oval used to define the shape of the arc.
         @param startAngle Starting angle (in degrees) where the arc begins
-        @param sweepAngle Sweep angle (in degrees) measured clockwise
+        @param sweepAngle Sweep angle (in degrees) measured clockwise.
         @param useCenter true means include the center of the oval. For filling
                          this will draw a wedge. False means just use the arc.
         @param paint    The paint used to draw the arc
     */
     void drawArc(const SkRect& oval, SkScalar startAngle, SkScalar sweepAngle,
                  bool useCenter, const SkPaint& paint);
 
     /** Draw the specified round-rect using the specified paint. The round-rect
         will be filled or framed based on the Style in the paint.
         @param rect     The rectangular bounds of the roundRect to be drawn
@@ skipping 663 matching lines @@
                                 const SkPaint& paint);
 
     virtual void onDrawPatch(const SkPoint cubics[12], const SkColor colors[4],
                            const SkPoint texCoords[4], SkXfermode* xmode, const SkPaint& paint);
 
     virtual void onDrawDrawable(SkDrawable*, const SkMatrix*);
 
     virtual void onDrawPaint(const SkPaint&);
     virtual void onDrawRect(const SkRect&, const SkPaint&);
     virtual void onDrawOval(const SkRect&, const SkPaint&);
+    virtual void onDrawArc(const SkRect&, SkScalar startAngle, SkScalar sweepAngle, bool useCenter,
+                           const SkPaint&);
     virtual void onDrawRRect(const SkRRect&, const SkPaint&);
     virtual void onDrawPoints(PointMode, size_t count, const SkPoint pts[], const SkPaint&);
     virtual void onDrawVertices(VertexMode, int vertexCount, const SkPoint vertices[],
                                 const SkPoint texs[], const SkColor colors[], SkXfermode*,
                                 const uint16_t indices[], int indexCount, const SkPaint&);
 
     virtual void onDrawAtlas(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[],
                              int count, SkXfermode::Mode, const SkRect* cull, const SkPaint*);
     virtual void onDrawPath(const SkPath&, const SkPaint&);
     virtual void onDrawImage(const SkImage*, SkScalar dx, SkScalar dy, const SkPaint*);
@@ skipping 244 matching lines @@
 
 class SkCanvasClipVisitor {
 public:
     virtual ~SkCanvasClipVisitor();
     virtual void clipRect(const SkRect&, SkRegion::Op, bool antialias) = 0;
     virtual void clipRRect(const SkRRect&, SkRegion::Op, bool antialias) = 0;
     virtual void clipPath(const SkPath&, SkRegion::Op, bool antialias) = 0;
 };
 
 #endif