[Remoting Android] Cursor & Cursor Feedback for OpenGL Renderer

remoting/client/gl_cursor_feedback.h

Index: remoting/client/gl_cursor_feedback.h
diff --git a/remoting/client/gl_cursor_feedback.h b/remoting/client/gl_cursor_feedback.h
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+++ b/remoting/client/gl_cursor_feedback.h
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+// Copyright 2016 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 REMOTING_CLIENT_OPENGL_GL_CURSOR_FEEDBACK_H_
+#define REMOTING_CLIENT_OPENGL_GL_CURSOR_FEEDBACK_H_
+
+#include <stdint.h>
+
+#include <memory>
+
+#include "base/macros.h"
+#include "base/time/time.h"
+
+namespace remoting {
+
+class GlCanvas;
+class GlRenderLayer;
+
+// This class draws the cursor feedback on the canvas.
+class GlCursorFeedback {
+ public:
+  GlCursorFeedback();
+  ~GlCursorFeedback();
+
+  // Sets the canvas on which the cursor feedback will be drawn. Resumes the
+  // feedback texture to the context of the new canvas.
+  // If |canvas| is nullptr, nothing will happen when calling Draw().
+  void SetCanvas(GlCanvas* canvas);
+
+  void StartAnimation(float normalized_x,
+                      float normalized_y,
+                      float normalized_width,
+                      float normalized_height);
+
+  // Returns true if animation is not finished, false otherwise. Does nothing
+  // if the animation has stopped.
+  bool Draw();
+
+ private:
+  // Returns the feedback texture. Creates the texture if it doesn't exist.
+  static const uint8_t* GetFeedbackTexture();
+  static std::unique_ptr<uint8_t[]> texture_;
+
+  std::unique_ptr<GlRenderLayer> layer_;
+  float max_width_ = 0;
+  float max_height_ = 0;
+  float cursor_x_ = 0;
+  float cursor_y_ = 0;
+  base::TimeTicks animation_start_time_;
+
+  DISALLOW_COPY_AND_ASSIGN(GlCursorFeedback);
+};
+
+}  // namespace remoting
+#endif  // REMOTING_CLIENT_OPENGL_GL_CURSOR_FEEDBACK_H_