Alter SkCanvas::drawPicture (devirtualize, take const SkPicture, take pointer)

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 951 matching lines @@
     SK_LEGACY_DRAWTEXT_VIRTUAL void drawTextOnPath(const void* text, size_t byteLength,
                                 const SkPath& path, const SkMatrix* matrix,
                                 const SkPaint& paint);
 
     /** PRIVATE / EXPERIMENTAL -- do not call
         Perform back-end analysis/optimization of a picture. This may attach
         optimization data to the picture which can be used by a later
         drawPicture call.
         @param picture The recorded drawing commands to analyze/optimize
     */
-    void EXPERIMENTAL_optimize(SkPicture* picture);
+    void EXPERIMENTAL_optimize(const SkPicture* picture);
 
     /** PRIVATE / EXPERIMENTAL -- do not call
         Purge all the discardable optimization information associated with
         'picture'. If NULL is passed in, purge all discardable information.
     */
-    void EXPERIMENTAL_purge(SkPicture* picture);
+    void EXPERIMENTAL_purge(const SkPicture* picture);
 
     /** Draw the picture into this canvas. This method effective brackets the
         playback of the picture's draw calls with save/restore, so the state
         of this canvas will be unchanged after this call.
         @param picture The recorded drawing commands to playback into this
                        canvas.
     */
-    virtual void drawPicture(SkPicture& picture);
+    void drawPicture(const SkPicture* picture);
 
     enum VertexMode {
         kTriangles_VertexMode,
         kTriangleStrip_VertexMode,
         kTriangleFan_VertexMode
     };
 
     /** Draw the array of vertices, interpreted as triangles (based on mode).
 
         If both textures and vertex-colors are NULL, it strokes hairlines with
@@ skipping 238 matching lines @@
         kSoft_ClipEdgeStyle
     };
 
     virtual void onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edgeStyle);
     virtual void onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle edgeStyle);
     virtual void onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle edgeStyle);
     virtual void onClipRegion(const SkRegion& deviceRgn, SkRegion::Op op);
 
     virtual void onDiscard();
 
+    virtual void onDrawPicture(const SkPicture* picture);
+
     // Returns the canvas to be used by DrawIter. Default implementation
     // returns this. Subclasses that encapsulate an indirect canvas may
     // need to overload this method. The impl must keep track of this, as it
     // is not released or deleted by the caller.
     virtual SkCanvas* canvasForDrawIter();
 
     // Clip rectangle bounds. Called internally by saveLayer.
     // returns false if the entire rectangle is entirely clipped out
     // If non-NULL, The imageFilter parameter will be used to expand the clip
     // and offscreen bounds for any margin required by the filter DAG.
@@ skipping 236 matching lines @@
 }
 
 static inline SkCanvas::SaveFlags& operator|=(SkCanvas::SaveFlags& lhs,
                                               const SkCanvas::SaveFlags rhs) {
     lhs = lhs | rhs;
     return lhs;
 }
 
 
 #endif