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-rw-r--r--modules/sksg/include/SkSGRenderNode.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/modules/sksg/include/SkSGRenderNode.h b/modules/sksg/include/SkSGRenderNode.h
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+++ b/modules/sksg/include/SkSGRenderNode.h
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+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkSGRenderNode_DEFINED
+#define SkSGRenderNode_DEFINED
+
+#include "SkSGNode.h"
+
+class SkCanvas;
+
+namespace sksg {
+
+/**
+ * Base class for nodes which can render to a canvas.
+ */
+class RenderNode : public Node {
+public:
+ // Render the node and its descendants to the canvas.
+ void render(SkCanvas*) const;
+
+protected:
+ RenderNode();
+
+ virtual void onRender(SkCanvas*) const = 0;
+
+private:
+ typedef Node INHERITED;
+};
+
+} // namespace sksg
+
+#endif // SkSGRenderNode_DEFINED