Initial SVG model

experimental/svg/model/SkSVGAttribute.h

+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkSVGAttribute_DEFINED
+#define SkSVGAttribute_DEFINED
+
+#include "SkColor.h"
+#include "SkTLazy.h"
+
+enum class SkSVGAttribute {
+    d,
+    fill,
+    stroke,
+    transform,
+};
+
+class SkSVGRenderContext;
+
+class SkSVGPresentationAttributes {
+public:
+    SkSVGPresentationAttributes();
+
+    void setFill(SkColor);
+    void setStroke(SkColor);
+
+    void applyTo(SkTCopyOnFirstWrite<SkSVGRenderContext>&) const;
+
+private:
+    // Color only for now.
+    SkColor fFill;
+    SkColor fStroke;
+
+    unsigned fFillIsSet   : 1;
+    unsigned fStrokeIsSet : 1;
+};
+
+#endif // SkSVGAttribute_DEFINED