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/*
* Copyright (C) 2021 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.systemui.biometrics;
import android.animation.AnimatorSet;
import android.animation.ValueAnimator;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PointF;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;
import android.view.animation.AccelerateDecelerateInterpolator;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import com.android.systemui.R;
/**
* UDFPS fingerprint drawable that is shown when enrolling
*/
public class UdfpsEnrollDrawable extends UdfpsDrawable {
private static final String TAG = "UdfpsAnimationEnroll";
private static final long ANIM_DURATION = 800;
// 1 + SCALE_MAX is the maximum that the moving target will animate to
private static final float SCALE_MAX = 0.25f;
@NonNull private final Drawable mMovingTargetFpIcon;
@NonNull private final Paint mSensorOutlinePaint;
@NonNull private final Paint mBlueFill;
@Nullable private RectF mSensorRect;
@Nullable private UdfpsEnrollHelper mEnrollHelper;
// Moving target animator set
@Nullable AnimatorSet mAnimatorSet;
// Moving target location
float mCurrentX;
float mCurrentY;
// Moving target size
float mCurrentScale = 1.f;
UdfpsEnrollDrawable(@NonNull Context context) {
super(context);
mSensorOutlinePaint = new Paint(0 /* flags */);
mSensorOutlinePaint.setAntiAlias(true);
mSensorOutlinePaint.setColor(mContext.getColor(R.color.udfps_enroll_icon));
mSensorOutlinePaint.setStyle(Paint.Style.STROKE);
mSensorOutlinePaint.setStrokeWidth(2.f);
mBlueFill = new Paint(0 /* flags */);
mBlueFill.setAntiAlias(true);
mBlueFill.setColor(context.getColor(R.color.udfps_moving_target_fill));
mBlueFill.setStyle(Paint.Style.FILL);
mMovingTargetFpIcon = context.getResources().getDrawable(R.drawable.ic_fingerprint, null);
mMovingTargetFpIcon.setTint(Color.WHITE);
mMovingTargetFpIcon.mutate();
mFingerprintDrawable.setTint(mContext.getColor(R.color.udfps_enroll_icon));
}
void setEnrollHelper(@NonNull UdfpsEnrollHelper helper) {
mEnrollHelper = helper;
}
@Override
public void onSensorRectUpdated(@NonNull RectF sensorRect) {
super.onSensorRectUpdated(sensorRect);
mSensorRect = sensorRect;
}
@Override
protected void updateFingerprintIconBounds(@NonNull Rect bounds) {
super.updateFingerprintIconBounds(bounds);
mMovingTargetFpIcon.setBounds(bounds);
invalidateSelf();
}
void onEnrollmentProgress(int remaining, int totalSteps) {
if (mEnrollHelper.isCenterEnrollmentComplete()) {
if (mAnimatorSet != null && mAnimatorSet.isRunning()) {
mAnimatorSet.end();
}
final PointF point = mEnrollHelper.getNextGuidedEnrollmentPoint();
final ValueAnimator x = ValueAnimator.ofFloat(mCurrentX, point.x);
x.addUpdateListener(animation -> {
mCurrentX = (float) animation.getAnimatedValue();
invalidateSelf();
});
final ValueAnimator y = ValueAnimator.ofFloat(mCurrentY, point.y);
y.addUpdateListener(animation -> {
mCurrentY = (float) animation.getAnimatedValue();
invalidateSelf();
});
final ValueAnimator scale = ValueAnimator.ofFloat(0, (float) Math.PI);
scale.setDuration(ANIM_DURATION);
scale.addUpdateListener(animation -> {
// Grow then shrink
mCurrentScale = 1 +
SCALE_MAX * (float) Math.sin((float) animation.getAnimatedValue());
invalidateSelf();
});
mAnimatorSet = new AnimatorSet();
mAnimatorSet.setInterpolator(new AccelerateDecelerateInterpolator());
mAnimatorSet.setDuration(ANIM_DURATION);
mAnimatorSet.playTogether(x, y, scale);
mAnimatorSet.start();
}
}
@Override
public void draw(@NonNull Canvas canvas) {
if (isIlluminationShowing()) {
return;
}
// Draw moving target
if (mEnrollHelper.isCenterEnrollmentComplete()) {
canvas.save();
canvas.translate(mCurrentX, mCurrentY);
if (mSensorRect != null) {
canvas.scale(mCurrentScale, mCurrentScale,
mSensorRect.centerX(), mSensorRect.centerY());
canvas.drawOval(mSensorRect, mBlueFill);
}
mMovingTargetFpIcon.draw(canvas);
canvas.restore();
} else {
if (mSensorRect != null) {
canvas.drawOval(mSensorRect, mSensorOutlinePaint);
}
mFingerprintDrawable.draw(canvas);
mFingerprintDrawable.setAlpha(mAlpha);
mSensorOutlinePaint.setAlpha(mAlpha);
}
}
@Override
public void setAlpha(int alpha) {
super.setAlpha(alpha);
mSensorOutlinePaint.setAlpha(alpha);
mBlueFill.setAlpha(alpha);
mMovingTargetFpIcon.setAlpha(alpha);
invalidateSelf();
}
}
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