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/*
* Copyright (C) 2020 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 com.android.keyguard;
import android.annotation.NonNull;
import android.content.Context;
import android.graphics.RectF;
import android.hardware.fingerprint.FingerprintSensorPropertiesInternal;
import android.util.AttributeSet;
import android.view.Surface;
import android.widget.Button;
import android.widget.FrameLayout;
/**
* A full screen view with an oval target where the UDFPS sensor is.
* Controlled by {@link DisabledUdfpsController}.
*/
public class DisabledUdfpsView extends Button {
@NonNull private final RectF mSensorRect;
@NonNull private final Context mContext;
// Used to obtain the sensor location.
@NonNull private FingerprintSensorPropertiesInternal mSensorProps;
public DisabledUdfpsView(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
mSensorRect = new RectF();
}
public void setSensorProperties(@NonNull FingerprintSensorPropertiesInternal properties) {
mSensorProps = properties;
}
// The "h" and "w" are the display's height and width relative to its current rotation.
private void updateSensorRect(int h, int w) {
// mSensorProps coordinates assume portrait mode.
mSensorRect.set(mSensorProps.sensorLocationX - mSensorProps.sensorRadius,
mSensorProps.sensorLocationY - mSensorProps.sensorRadius,
mSensorProps.sensorLocationX + mSensorProps.sensorRadius,
mSensorProps.sensorLocationY + mSensorProps.sensorRadius);
// Transform mSensorRect if the device is in landscape mode.
switch (mContext.getDisplay().getRotation()) {
case Surface.ROTATION_90:
mSensorRect.set(mSensorRect.top, h - mSensorRect.right, mSensorRect.bottom,
h - mSensorRect.left);
break;
case Surface.ROTATION_270:
mSensorRect.set(w - mSensorRect.bottom, mSensorRect.left, w - mSensorRect.top,
mSensorRect.right);
break;
default:
// Do nothing to stay in portrait mode.
}
setX(mSensorRect.left);
setY(mSensorRect.top);
setLayoutParams(new FrameLayout.LayoutParams(
(int) (mSensorRect.right - mSensorRect.left),
(int) (mSensorRect.bottom - mSensorRect.top)));
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
// Always re-compute the layout regardless of whether "changed" is true. It is usually false
// when the device goes from landscape to seascape and vice versa, but mSensorRect and
// its dependencies need to be recalculated to stay at the same physical location on the
// screen.
final int w = getLayoutParams().width;
final int h = getLayoutParams().height;
updateSensorRect(h, w);
}
}
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