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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.content.Context;
import android.graphics.Canvas;
import android.graphics.ColorFilter;
import android.graphics.drawable.Drawable;
import android.util.Log;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import java.util.ArrayList;
import java.util.List;
/**
* UDFPS enrollment progress bar.
*/
public class UdfpsEnrollProgressBarDrawable extends Drawable {
private static final String TAG = "UdfpsProgressBar";
private static final float SEGMENT_GAP_ANGLE = 12f;
@NonNull private final List<UdfpsEnrollProgressBarSegment> mSegments;
public UdfpsEnrollProgressBarDrawable(@NonNull Context context) {
mSegments = new ArrayList<>(UdfpsEnrollHelper.ENROLL_STAGE_COUNT);
float startAngle = SEGMENT_GAP_ANGLE / 2f;
final float sweepAngle = (360f / UdfpsEnrollHelper.ENROLL_STAGE_COUNT) - SEGMENT_GAP_ANGLE;
final Runnable invalidateRunnable = this::invalidateSelf;
for (int index = 0; index < UdfpsEnrollHelper.ENROLL_STAGE_COUNT; index++) {
mSegments.add(new UdfpsEnrollProgressBarSegment(context, getBounds(), startAngle,
sweepAngle, SEGMENT_GAP_ANGLE, invalidateRunnable));
startAngle += sweepAngle + SEGMENT_GAP_ANGLE;
}
}
void setEnrollmentProgress(int remaining, int totalSteps) {
if (remaining == totalSteps) {
// Show some progress for the initial touch.
setEnrollmentProgress(1);
} else {
setEnrollmentProgress(totalSteps - remaining);
}
}
private void setEnrollmentProgress(int progressSteps) {
Log.d(TAG, "setEnrollmentProgress: progressSteps = " + progressSteps);
int segmentIndex = 0;
int prevThreshold = 0;
while (segmentIndex < mSegments.size()) {
final UdfpsEnrollProgressBarSegment segment = mSegments.get(segmentIndex);
final int threshold = UdfpsEnrollHelper.getStageThreshold(segmentIndex);
if (progressSteps >= threshold && !segment.isFilledOrFilling()) {
Log.d(TAG, "setEnrollmentProgress: segment[" + segmentIndex + "] complete");
segment.updateProgress(1f);
break;
} else if (progressSteps >= prevThreshold && progressSteps < threshold) {
final int relativeSteps = progressSteps - prevThreshold;
final int relativeThreshold = threshold - prevThreshold;
final float segmentProgress = (float) relativeSteps / (float) relativeThreshold;
Log.d(TAG, "setEnrollmentProgress: segment[" + segmentIndex + "] progress = "
+ segmentProgress);
segment.updateProgress(segmentProgress);
break;
}
segmentIndex++;
prevThreshold = threshold;
}
if (progressSteps >= UdfpsEnrollHelper.getLastStageThreshold()) {
Log.d(TAG, "setEnrollmentProgress: startCompletionAnimation");
for (final UdfpsEnrollProgressBarSegment segment : mSegments) {
segment.startCompletionAnimation();
}
} else {
Log.d(TAG, "setEnrollmentProgress: cancelCompletionAnimation");
for (final UdfpsEnrollProgressBarSegment segment : mSegments) {
segment.cancelCompletionAnimation();
}
}
}
void onLastStepAcquired() {
Log.d(TAG, "setEnrollmentProgress: onLastStepAcquired");
setEnrollmentProgress(UdfpsEnrollHelper.getLastStageThreshold());
}
@Override
public void draw(@NonNull Canvas canvas) {
Log.d(TAG, "setEnrollmentProgress: draw");
canvas.save();
// Progress starts from the top, instead of the right
canvas.rotate(-90f, getBounds().centerX(), getBounds().centerY());
// Draw each of the enroll segments.
for (final UdfpsEnrollProgressBarSegment segment : mSegments) {
segment.draw(canvas);
}
canvas.restore();
}
@Override
public void setAlpha(int alpha) {
}
@Override
public void setColorFilter(@Nullable ColorFilter colorFilter) {
}
@Override
public int getOpacity() {
return 0;
}
}
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