android-35/android/inputmethodservice/navigationbar/KeyButtonView.java - platform/prebuilts/fullsdk/sources - Git at Google

 /*
  * Copyright (C) 2022 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package android.inputmethodservice.navigationbar;

 import static android.view.Display.INVALID_DISPLAY;
 import static android.view.KeyEvent.KEYCODE_BACK;
 import static android.view.KeyEvent.KEYCODE_UNKNOWN;
 import static android.view.accessibility.AccessibilityNodeInfo.ACTION_CLICK;
 import static android.view.accessibility.AccessibilityNodeInfo.ACTION_LONG_CLICK;

 import android.content.Context;
 import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.graphics.drawable.Drawable;
 import android.inputmethodservice.InputMethodService;
 import android.media.AudioManager;
 import android.os.Bundle;
 import android.os.SystemClock;
 import android.util.AttributeSet;
 import android.view.HapticFeedbackConstants;
 import android.view.InputDevice;
 import android.view.KeyCharacterMap;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.SoundEffectConstants;
 import android.view.View;
 import android.view.ViewConfiguration;
 import android.view.accessibility.AccessibilityEvent;
 import android.view.accessibility.AccessibilityNodeInfo;
 import android.view.inputmethod.InputConnection;
 import android.widget.ImageView;

 /**
  * @hide
  */
 public class KeyButtonView extends ImageView implements ButtonInterface {
     private static final String TAG = KeyButtonView.class.getSimpleName();

     private final boolean mPlaySounds;
     private long mDownTime;
     private boolean mTracking;
     private int mCode;
     private int mTouchDownX;
     private int mTouchDownY;
     private AudioManager mAudioManager;
     private boolean mGestureAborted;
     private OnClickListener mOnClickListener;
     private final KeyButtonRipple mRipple;
     private final Paint mOvalBgPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
     private float mDarkIntensity;
     private boolean mHasOvalBg = false;

     public KeyButtonView(Context context, AttributeSet attrs) {
         super(context, attrs);

         // TODO(b/215443343): Figure out better place to set this.
         switch (getId()) {
             case com.android.internal.R.id.input_method_nav_back:
                 mCode = KEYCODE_BACK;
                 break;
             default:
                 mCode = KEYCODE_UNKNOWN;
                 break;
         }

         mPlaySounds = true;

         setClickable(true);
         mAudioManager = context.getSystemService(AudioManager.class);

         mRipple = new KeyButtonRipple(context, this,
                 com.android.internal.R.dimen.input_method_nav_key_button_ripple_max_width);
         setBackground(mRipple);
         setWillNotDraw(false);
         forceHasOverlappingRendering(false);
     }

     @Override
     public boolean isClickable() {
         return mCode != KEYCODE_UNKNOWN || super.isClickable();
     }

     public void setCode(int code) {
         mCode = code;
     }

     @Override
     public void setOnClickListener(OnClickListener onClickListener) {
         super.setOnClickListener(onClickListener);
         mOnClickListener = onClickListener;
     }

     @Override
     public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
         super.onInitializeAccessibilityNodeInfo(info);
         if (mCode != KEYCODE_UNKNOWN) {
             info.addAction(new AccessibilityNodeInfo.AccessibilityAction(ACTION_CLICK, null));
             if (isLongClickable()) {
                 info.addAction(
                         new AccessibilityNodeInfo.AccessibilityAction(ACTION_LONG_CLICK, null));
             }
         }
     }

     @Override
     protected void onWindowVisibilityChanged(int visibility) {
         super.onWindowVisibilityChanged(visibility);
         if (visibility != View.VISIBLE) {
             jumpDrawablesToCurrentState();
         }
     }

     @Override
     public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
         if (action == ACTION_CLICK && mCode != KEYCODE_UNKNOWN) {
             sendEvent(KeyEvent.ACTION_DOWN, 0, SystemClock.uptimeMillis());
             sendEvent(KeyEvent.ACTION_UP, mTracking ? KeyEvent.FLAG_TRACKING : 0);
             mTracking = false;
             sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_CLICKED);
             playSoundEffect(SoundEffectConstants.CLICK);
             return true;
         } else if (action == ACTION_LONG_CLICK && mCode != KEYCODE_UNKNOWN) {
             sendEvent(KeyEvent.ACTION_DOWN, KeyEvent.FLAG_LONG_PRESS);
             sendEvent(KeyEvent.ACTION_UP, mTracking ? KeyEvent.FLAG_TRACKING : 0);
             mTracking = false;
             sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_LONG_CLICKED);
             return true;
         }
         return super.performAccessibilityActionInternal(action, arguments);
     }

     @Override
     public boolean onTouchEvent(MotionEvent ev) {
         final boolean showSwipeUI = false; // mOverviewProxyService.shouldShowSwipeUpUI();
         final int action = ev.getAction();
         int x, y;
         if (action == MotionEvent.ACTION_DOWN) {
             mGestureAborted = false;
         }
         if (mGestureAborted) {
             setPressed(false);
             return false;
         }

         switch (action) {
             case MotionEvent.ACTION_DOWN:
                 mDownTime = SystemClock.uptimeMillis();
                 setPressed(true);

                 // Use raw X and Y to detect gestures in case a parent changes the x and y values
                 mTouchDownX = (int) ev.getRawX();
                 mTouchDownY = (int) ev.getRawY();
                 if (mCode != KEYCODE_UNKNOWN) {
                     sendEvent(KeyEvent.ACTION_DOWN, 0, mDownTime);
                 } else {
                     // Provide the same haptic feedback that the system offers for virtual keys.
                     performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY);
                 }
                 if (!showSwipeUI) {
                     playSoundEffect(SoundEffectConstants.CLICK);
                 }
                 break;
             case MotionEvent.ACTION_MOVE:
                 x = (int) ev.getRawX();
                 y = (int) ev.getRawY();

                 float slop = getQuickStepTouchSlopPx(getContext());
                 if (Math.abs(x - mTouchDownX) > slop || Math.abs(y - mTouchDownY) > slop) {
                     // When quick step is enabled, prevent animating the ripple triggered by
                     // setPressed and decide to run it on touch up
                     setPressed(false);
                 }
                 break;
             case MotionEvent.ACTION_CANCEL:
                 setPressed(false);
                 if (mCode != KEYCODE_UNKNOWN) {
                     sendEvent(KeyEvent.ACTION_UP, KeyEvent.FLAG_CANCELED);
                 }
                 break;
             case MotionEvent.ACTION_UP:
                 final boolean doIt = isPressed();
                 setPressed(false);
                 final boolean doHapticFeedback = (SystemClock.uptimeMillis() - mDownTime) > 150;
                 if (showSwipeUI) {
                     if (doIt) {
                         // Apply haptic feedback on touch up since there is none on touch down
                         performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY);
                         playSoundEffect(SoundEffectConstants.CLICK);
                     }
                 } else if (doHapticFeedback) {
                     // Always send a release ourselves because it doesn't seem to be sent elsewhere
                     // and it feels weird to sometimes get a release haptic and other times not.
                     performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY_RELEASE);
                 }
                 if (mCode != KEYCODE_UNKNOWN) {
                     if (doIt) {
                         sendEvent(KeyEvent.ACTION_UP, mTracking ? KeyEvent.FLAG_TRACKING : 0);
                         mTracking = false;
                         sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_CLICKED);
                     } else {
                         sendEvent(KeyEvent.ACTION_UP, KeyEvent.FLAG_CANCELED);
                     }
                 } else {
                     // no key code, just a regular ImageView
                     if (doIt && mOnClickListener != null) {
                         mOnClickListener.onClick(this);
                         sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_CLICKED);
                     }
                 }
                 break;
         }

         return true;
     }

     @Override
     public void setImageDrawable(Drawable drawable) {
         super.setImageDrawable(drawable);

         if (drawable == null) {
             return;
         }
         KeyButtonDrawable keyButtonDrawable = (KeyButtonDrawable) drawable;
         keyButtonDrawable.setDarkIntensity(mDarkIntensity);
         mHasOvalBg = keyButtonDrawable.hasOvalBg();
         if (mHasOvalBg) {
             mOvalBgPaint.setColor(keyButtonDrawable.getDrawableBackgroundColor());
         }
         mRipple.setType(keyButtonDrawable.hasOvalBg() ? KeyButtonRipple.Type.OVAL
                 : KeyButtonRipple.Type.ROUNDED_RECT);
     }

     @Override
     public void playSoundEffect(int soundConstant) {
         if (!mPlaySounds) return;
         mAudioManager.playSoundEffect(soundConstant);
     }

     private void sendEvent(int action, int flags) {
         sendEvent(action, flags, SystemClock.uptimeMillis());
     }

     private void sendEvent(int action, int flags, long when) {
         // TODO(b/215443343): Consolidate this logic to somewhere else.
         if (mContext instanceof InputMethodService) {
             final int repeatCount = (flags & KeyEvent.FLAG_LONG_PRESS) != 0 ? 1 : 0;
             final KeyEvent ev = new KeyEvent(mDownTime, when, action, mCode, repeatCount,
                     0, KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
                     flags | KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_VIRTUAL_HARD_KEY,
                     InputDevice.SOURCE_KEYBOARD);
             int displayId = INVALID_DISPLAY;

             // Make KeyEvent work on multi-display environment
             if (getDisplay() != null) {
                 displayId = getDisplay().getDisplayId();
             }
             if (displayId != INVALID_DISPLAY) {
                 ev.setDisplayId(displayId);
             }
             final InputMethodService ims = (InputMethodService) mContext;
             final boolean handled;
             switch (action) {
                 case KeyEvent.ACTION_DOWN:
                     handled = ims.onKeyDown(ev.getKeyCode(), ev);
                     mTracking = handled && ev.getRepeatCount() == 0
                             && (ev.getFlags() & KeyEvent.FLAG_START_TRACKING) != 0;
                     break;
                 case KeyEvent.ACTION_UP:
                     handled = ims.onKeyUp(ev.getKeyCode(), ev);
                     break;
                 default:
                     handled = false;
                     break;
             }
             if (!handled) {
                 final InputConnection ic = ims.getCurrentInputConnection();
                 if (ic != null) {
                     ic.sendKeyEvent(ev);
                 }
             }
         }
     }

     @Override
     public void setDarkIntensity(float darkIntensity) {
         mDarkIntensity = darkIntensity;

         Drawable drawable = getDrawable();
         if (drawable != null) {
             ((KeyButtonDrawable) drawable).setDarkIntensity(darkIntensity);
             // Since we reuse the same drawable for multiple views, we need to invalidate the view
             // manually.
             invalidate();
         }
         mRipple.setDarkIntensity(darkIntensity);
     }

     @Override
     public void setDelayTouchFeedback(boolean shouldDelay) {
         mRipple.setDelayTouchFeedback(shouldDelay);
     }

     @Override
     public void draw(Canvas canvas) {
         if (mHasOvalBg) {
             int d = Math.min(getWidth(), getHeight());
             canvas.drawOval(0, 0, d, d, mOvalBgPaint);
         }
         super.draw(canvas);
     }

     /**
      * Ratio of quickstep touch slop (when system takes over the touch) to view touch slop
      */
     public static final float QUICKSTEP_TOUCH_SLOP_RATIO = 3;

     /**
      * Touch slop for quickstep gesture
      */
     private static float getQuickStepTouchSlopPx(Context context) {
         return QUICKSTEP_TOUCH_SLOP_RATIO * ViewConfiguration.get(context).getScaledTouchSlop();
     }
 }
	/*
	* Copyright (C) 2022 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package android.inputmethodservice.navigationbar;

	import static android.view.Display.INVALID_DISPLAY;
	import static android.view.KeyEvent.KEYCODE_BACK;
	import static android.view.KeyEvent.KEYCODE_UNKNOWN;
	import static android.view.accessibility.AccessibilityNodeInfo.ACTION_CLICK;
	import static android.view.accessibility.AccessibilityNodeInfo.ACTION_LONG_CLICK;

	import android.content.Context;
	import android.graphics.Canvas;
	import android.graphics.Paint;
	import android.graphics.drawable.Drawable;
	import android.inputmethodservice.InputMethodService;
	import android.media.AudioManager;
	import android.os.Bundle;
	import android.os.SystemClock;
	import android.util.AttributeSet;
	import android.view.HapticFeedbackConstants;
	import android.view.InputDevice;
	import android.view.KeyCharacterMap;
	import android.view.KeyEvent;
	import android.view.MotionEvent;
	import android.view.SoundEffectConstants;
	import android.view.View;
	import android.view.ViewConfiguration;
	import android.view.accessibility.AccessibilityEvent;
	import android.view.accessibility.AccessibilityNodeInfo;
	import android.view.inputmethod.InputConnection;
	import android.widget.ImageView;

	/**
	* @hide
	*/
	public class KeyButtonView extends ImageView implements ButtonInterface {
	private static final String TAG = KeyButtonView.class.getSimpleName();

	private final boolean mPlaySounds;
	private long mDownTime;
	private boolean mTracking;
	private int mCode;
	private int mTouchDownX;
	private int mTouchDownY;
	private AudioManager mAudioManager;
	private boolean mGestureAborted;
	private OnClickListener mOnClickListener;
	private final KeyButtonRipple mRipple;
	private final Paint mOvalBgPaint = new Paint(Paint.ANTI_ALIAS_FLAG \| Paint.FILTER_BITMAP_FLAG);
	private float mDarkIntensity;
	private boolean mHasOvalBg = false;

	public KeyButtonView(Context context, AttributeSet attrs) {
	super(context, attrs);

	// TODO(b/215443343): Figure out better place to set this.
	switch (getId()) {
	case com.android.internal.R.id.input_method_nav_back:
	mCode = KEYCODE_BACK;
	break;
	default:
	mCode = KEYCODE_UNKNOWN;
	break;
	}

	mPlaySounds = true;

	setClickable(true);
	mAudioManager = context.getSystemService(AudioManager.class);

	mRipple = new KeyButtonRipple(context, this,
	com.android.internal.R.dimen.input_method_nav_key_button_ripple_max_width);
	setBackground(mRipple);
	setWillNotDraw(false);
	forceHasOverlappingRendering(false);
	}

	@Override
	public boolean isClickable() {
	return mCode != KEYCODE_UNKNOWN \|\| super.isClickable();
	}

	public void setCode(int code) {
	mCode = code;
	}

	@Override
	public void setOnClickListener(OnClickListener onClickListener) {
	super.setOnClickListener(onClickListener);
	mOnClickListener = onClickListener;
	}

	@Override
	public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
	super.onInitializeAccessibilityNodeInfo(info);
	if (mCode != KEYCODE_UNKNOWN) {
	info.addAction(new AccessibilityNodeInfo.AccessibilityAction(ACTION_CLICK, null));
	if (isLongClickable()) {
	info.addAction(
	new AccessibilityNodeInfo.AccessibilityAction(ACTION_LONG_CLICK, null));
	}
	}
	}

	@Override
	protected void onWindowVisibilityChanged(int visibility) {
	super.onWindowVisibilityChanged(visibility);
	if (visibility != View.VISIBLE) {
	jumpDrawablesToCurrentState();
	}
	}

	@Override
	public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
	if (action == ACTION_CLICK && mCode != KEYCODE_UNKNOWN) {
	sendEvent(KeyEvent.ACTION_DOWN, 0, SystemClock.uptimeMillis());
	sendEvent(KeyEvent.ACTION_UP, mTracking ? KeyEvent.FLAG_TRACKING : 0);
	mTracking = false;
	sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_CLICKED);
	playSoundEffect(SoundEffectConstants.CLICK);
	return true;
	} else if (action == ACTION_LONG_CLICK && mCode != KEYCODE_UNKNOWN) {
	sendEvent(KeyEvent.ACTION_DOWN, KeyEvent.FLAG_LONG_PRESS);
	sendEvent(KeyEvent.ACTION_UP, mTracking ? KeyEvent.FLAG_TRACKING : 0);
	mTracking = false;
	sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_LONG_CLICKED);
	return true;
	}
	return super.performAccessibilityActionInternal(action, arguments);
	}

	@Override
	public boolean onTouchEvent(MotionEvent ev) {
	final boolean showSwipeUI = false; // mOverviewProxyService.shouldShowSwipeUpUI();
	final int action = ev.getAction();
	int x, y;
	if (action == MotionEvent.ACTION_DOWN) {
	mGestureAborted = false;
	}
	if (mGestureAborted) {
	setPressed(false);
	return false;
	}

	switch (action) {
	case MotionEvent.ACTION_DOWN:
	mDownTime = SystemClock.uptimeMillis();
	setPressed(true);

	// Use raw X and Y to detect gestures in case a parent changes the x and y values
	mTouchDownX = (int) ev.getRawX();
	mTouchDownY = (int) ev.getRawY();
	if (mCode != KEYCODE_UNKNOWN) {
	sendEvent(KeyEvent.ACTION_DOWN, 0, mDownTime);
	} else {
	// Provide the same haptic feedback that the system offers for virtual keys.
	performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY);
	}
	if (!showSwipeUI) {
	playSoundEffect(SoundEffectConstants.CLICK);
	}
	break;
	case MotionEvent.ACTION_MOVE:
	x = (int) ev.getRawX();
	y = (int) ev.getRawY();

	float slop = getQuickStepTouchSlopPx(getContext());
	if (Math.abs(x - mTouchDownX) > slop \|\| Math.abs(y - mTouchDownY) > slop) {
	// When quick step is enabled, prevent animating the ripple triggered by
	// setPressed and decide to run it on touch up
	setPressed(false);
	}
	break;
	case MotionEvent.ACTION_CANCEL:
	setPressed(false);
	if (mCode != KEYCODE_UNKNOWN) {
	sendEvent(KeyEvent.ACTION_UP, KeyEvent.FLAG_CANCELED);
	}
	break;
	case MotionEvent.ACTION_UP:
	final boolean doIt = isPressed();
	setPressed(false);
	final boolean doHapticFeedback = (SystemClock.uptimeMillis() - mDownTime) > 150;
	if (showSwipeUI) {
	if (doIt) {
	// Apply haptic feedback on touch up since there is none on touch down
	performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY);
	playSoundEffect(SoundEffectConstants.CLICK);
	}
	} else if (doHapticFeedback) {
	// Always send a release ourselves because it doesn't seem to be sent elsewhere
	// and it feels weird to sometimes get a release haptic and other times not.
	performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY_RELEASE);
	}
	if (mCode != KEYCODE_UNKNOWN) {
	if (doIt) {
	sendEvent(KeyEvent.ACTION_UP, mTracking ? KeyEvent.FLAG_TRACKING : 0);
	mTracking = false;
	sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_CLICKED);
	} else {
	sendEvent(KeyEvent.ACTION_UP, KeyEvent.FLAG_CANCELED);
	}
	} else {
	// no key code, just a regular ImageView
	if (doIt && mOnClickListener != null) {
	mOnClickListener.onClick(this);
	sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_CLICKED);
	}
	}
	break;
	}

	return true;
	}

	@Override
	public void setImageDrawable(Drawable drawable) {
	super.setImageDrawable(drawable);

	if (drawable == null) {
	return;
	}
	KeyButtonDrawable keyButtonDrawable = (KeyButtonDrawable) drawable;
	keyButtonDrawable.setDarkIntensity(mDarkIntensity);
	mHasOvalBg = keyButtonDrawable.hasOvalBg();
	if (mHasOvalBg) {
	mOvalBgPaint.setColor(keyButtonDrawable.getDrawableBackgroundColor());
	}
	mRipple.setType(keyButtonDrawable.hasOvalBg() ? KeyButtonRipple.Type.OVAL
	: KeyButtonRipple.Type.ROUNDED_RECT);
	}

	@Override
	public void playSoundEffect(int soundConstant) {
	if (!mPlaySounds) return;
	mAudioManager.playSoundEffect(soundConstant);
	}

	private void sendEvent(int action, int flags) {
	sendEvent(action, flags, SystemClock.uptimeMillis());
	}

	private void sendEvent(int action, int flags, long when) {
	// TODO(b/215443343): Consolidate this logic to somewhere else.
	if (mContext instanceof InputMethodService) {
	final int repeatCount = (flags & KeyEvent.FLAG_LONG_PRESS) != 0 ? 1 : 0;
	final KeyEvent ev = new KeyEvent(mDownTime, when, action, mCode, repeatCount,
	0, KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
	flags \| KeyEvent.FLAG_SOFT_KEYBOARD \| KeyEvent.FLAG_VIRTUAL_HARD_KEY,
	InputDevice.SOURCE_KEYBOARD);
	int displayId = INVALID_DISPLAY;

	// Make KeyEvent work on multi-display environment
	if (getDisplay() != null) {
	displayId = getDisplay().getDisplayId();
	}
	if (displayId != INVALID_DISPLAY) {
	ev.setDisplayId(displayId);
	}
	final InputMethodService ims = (InputMethodService) mContext;
	final boolean handled;
	switch (action) {
	case KeyEvent.ACTION_DOWN:
	handled = ims.onKeyDown(ev.getKeyCode(), ev);
	mTracking = handled && ev.getRepeatCount() == 0
	&& (ev.getFlags() & KeyEvent.FLAG_START_TRACKING) != 0;
	break;
	case KeyEvent.ACTION_UP:
	handled = ims.onKeyUp(ev.getKeyCode(), ev);
	break;
	default:
	handled = false;
	break;
	}
	if (!handled) {
	final InputConnection ic = ims.getCurrentInputConnection();
	if (ic != null) {
	ic.sendKeyEvent(ev);
	}
	}
	}
	}

	@Override
	public void setDarkIntensity(float darkIntensity) {
	mDarkIntensity = darkIntensity;

	Drawable drawable = getDrawable();
	if (drawable != null) {
	((KeyButtonDrawable) drawable).setDarkIntensity(darkIntensity);
	// Since we reuse the same drawable for multiple views, we need to invalidate the view
	// manually.
	invalidate();
	}
	mRipple.setDarkIntensity(darkIntensity);
	}

	@Override
	public void setDelayTouchFeedback(boolean shouldDelay) {
	mRipple.setDelayTouchFeedback(shouldDelay);
	}

	@Override
	public void draw(Canvas canvas) {
	if (mHasOvalBg) {
	int d = Math.min(getWidth(), getHeight());
	canvas.drawOval(0, 0, d, d, mOvalBgPaint);
	}
	super.draw(canvas);
	}

	/**
	* Ratio of quickstep touch slop (when system takes over the touch) to view touch slop
	*/
	public static final float QUICKSTEP_TOUCH_SLOP_RATIO = 3;

	/**
	* Touch slop for quickstep gesture
	*/
	private static float getQuickStepTouchSlopPx(Context context) {
	return QUICKSTEP_TOUCH_SLOP_RATIO * ViewConfiguration.get(context).getScaledTouchSlop();
	}
	}