Start moving to the new canvas structure.

experimental/SkV8Example/DrawingMethods.h

Index: experimental/SkV8Example/DrawingMethods.h
diff --git a/experimental/SkV8Example/DrawingMethods.h b/experimental/SkV8Example/DrawingMethods.h
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+++ b/experimental/SkV8Example/DrawingMethods.h
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+/*
+ * Copyright 2014 Google Inc.
+ *
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ */
+
+#ifndef SkV8Example_DrawingMethods_DEFINED
+#define SkV8Example_DrawingMethods_DEFINED
+
+#include <v8.h>
+
+class SkCanvas;
+class Global;
+
+// DrawingMethods contains common functionality for both Context, Image2Builder,
+// and DisplayListBuiler.
+class DrawingMethods {
+public:
+    DrawingMethods(Global* global)
+            : fGlobal(global)
+    {}
+    virtual ~DrawingMethods() {}
+
+    // Retrieve the SkCanvas to draw on. May return NULL.
+    virtual SkCanvas* getCanvas() = 0;
+
+    // Add the Javascript attributes and methods that DrawingMethods
+    // implements to the ObjectTemplate.
+    void addAttributesAndMethods(v8::Handle<v8::ObjectTemplate> tmpl);
+
+protected:
+    // Get the pointer out of obj.
+    static DrawingMethods* Unwrap(v8::Handle<v8::Object> obj);
+
+    Global* fGlobal;
+
+private:
+    // JS Attributes
+    static void GetWidth(v8::Local<v8::String> name,
+                         const v8::PropertyCallbackInfo<v8::Value>& info);
+    static void GetHeight(v8::Local<v8::String> name,
+                          const v8::PropertyCallbackInfo<v8::Value>& info);
+
+    // JS Methods
+    static void Save(const v8::FunctionCallbackInfo<v8::Value>& args);
+    static void Restore(const v8::FunctionCallbackInfo<v8::Value>& args);
+    static void Rotate(const v8::FunctionCallbackInfo<v8::Value>& args);
+    static void Translate(const v8::FunctionCallbackInfo<v8::Value>& args);
+    static void ResetTransform(const v8::FunctionCallbackInfo<v8::Value>& args);
+
+    static void DrawPath(const v8::FunctionCallbackInfo<v8::Value>& args);
+};
+
+#endif