[Android] Composited selection handle rendering

content/browser/android/composited_touch_handle_drawable.h

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_BROWSER_ANDROID_COMPOSITED_TOUCH_HANDLE_DRAWABLE_H_
+#define CONTENT_BROWSER_ANDROID_COMPOSITED_TOUCH_HANDLE_DRAWABLE_H_
+
+#include "content/browser/renderer_host/input/touch_handle.h"
+
+#include "base/android/jni_android.h"
+#include "cc/layers/ui_resource_layer.h"
+
+namespace content {
+
+// Touch handle drawable implementation backed by a cc layer.
+class CompositedTouchHandleDrawable : public TouchHandleDrawable {
+ public:
+  CompositedTouchHandleDrawable(cc::Layer* root_layer, float dpi_scale);
+  virtual ~CompositedTouchHandleDrawable();
+
+  // TouchHandleDrawable implementation.
+  virtual void SetOrientation(TouchHandleOrientation orientation) OVERRIDE;
+  virtual void SetAlpha(float alpha) OVERRIDE;
+  virtual void SetFocus(const gfx::PointF& position) OVERRIDE;
+  virtual void SetVisible(bool visible) OVERRIDE;
+  virtual bool ContainsPoint(const gfx::PointF& point) const OVERRIDE;
+
+  static bool RegisterHandleViewResources(JNIEnv* env);
+
+ private:
+  void Detach();
+  gfx::RectF BoundingRect() const;
+
+  const float dpi_scale_;
+  TouchHandleOrientation orientation_;
+  gfx::PointF focal_position_;
+  gfx::Vector2dF focal_offset_from_origin_;
+
+  scoped_refptr<cc::UIResourceLayer> layer_;
+
+  DISALLOW_COPY_AND_ASSIGN(CompositedTouchHandleDrawable);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_ANDROID_COMPOSITED_TOUCH_HANDLE_DRAWABLE_H_