[Remoting Android] Move feedback type to radius logic out of DesktopView

remoting/android/java/src/org/chromium/chromoting/GlDesktopView.java

 // 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.
 
 package org.chromium.chromoting;
 
 import android.graphics.Matrix;
 import android.graphics.PointF;
 import android.view.SurfaceHolder;
 
 import org.chromium.chromoting.jni.Client;
 import org.chromium.chromoting.jni.GlDisplay;
 
 /**
  * The user interface for viewing and interacting with a specific remote host. Uses OpenGL to draw
  * the desktop and cursor. Should be used entirely on the UI thread.
  */
 public class GlDesktopView extends DesktopView implements SurfaceHolder.Callback {
     private final GlDisplay mDisplay;
+    private final InputFeedbackRadiusMapper mInputFeedbackMapper;
 
     private Object mOnHostSizeChangedListenerKey;
     private Object mOnCanvasRenderedListenerKey;
 
     private float mScaleFactor;
 
     public GlDesktopView(GlDisplay display, Desktop desktop, Client client) {
         super(desktop, client);
         Preconditions.notNull(display);
         mDisplay = display;
 
-        mScaleFactor = 0;
+        mInputFeedbackMapper = new InputFeedbackRadiusMapper(this);
 
         getHolder().addCallback(this);
     }
 
     @Override
     public void showInputFeedback(InputFeedbackType feedbackToShow, PointF pos) {
-        float diameter = getFeedbackRadius(feedbackToShow, mScaleFactor) * 2.0f;
+        float diameter =
+                mInputFeedbackMapper.getFeedbackRadius(feedbackToShow, mScaleFactor) * 2.0f;
         if (diameter <= 0.0f) {
             return;
         }
         mDisplay.showCursorInputFeedback(pos.x, pos.y, diameter);
     }
 
     @Override
     public void transformationChanged(Matrix matrix) {
         float[] matrixArray = new float[9];
         matrix.getValues(matrixArray);
@@ skipping 45 matching lines @@
         // the listeners when the surface is about to be destroyed.
         if (mOnHostSizeChangedListenerKey != null) {
             mDisplay.onHostSizeChanged().remove(mOnHostSizeChangedListenerKey);
         }
         if (mOnCanvasRenderedListenerKey != null) {
             mDisplay.onCanvasRendered().remove(mOnCanvasRenderedListenerKey);
         }
         mDisplay.surfaceDestroyed();
     }
 }