| /* |
| * 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.annotation.Nullable; |
| import android.content.Context; |
| import android.graphics.RectF; |
| import android.util.AttributeSet; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.FrameLayout; |
| |
| /** |
| * Base class for views containing UDFPS animations. Note that this is a FrameLayout so that we |
| * can support multiple child views drawing in the same region around the sensor location. |
| * |
| * - hides animation view when pausing auth |
| * - sends illumination events to fingerprint drawable |
| * - sends sensor rect updates to fingerprint drawable |
| * - optionally can override dozeTimeTick to adjust views for burn-in mitigation |
| */ |
| public abstract class UdfpsAnimationView extends FrameLayout { |
| private float mDialogSuggestedAlpha = 1f; |
| private float mNotificationShadeExpansion = 0f; |
| |
| // Used for Udfps ellipse detection when flag is true, set by AnimationViewController |
| boolean mUseExpandedOverlay = false; |
| |
| // mAlpha takes into consideration the status bar expansion amount and dialog suggested alpha |
| private int mAlpha; |
| boolean mPauseAuth; |
| |
| public UdfpsAnimationView(Context context, @Nullable AttributeSet attrs) { |
| super(context, attrs); |
| } |
| |
| /** |
| * Fingerprint drawable |
| */ |
| abstract UdfpsDrawable getDrawable(); |
| |
| void onSensorRectUpdated(RectF bounds) { |
| getDrawable().onSensorRectUpdated(bounds); |
| } |
| |
| void onDisplayConfiguring() { |
| getDrawable().setDisplayConfigured(true); |
| getDrawable().invalidateSelf(); |
| } |
| |
| void onDisplayUnconfigured() { |
| getDrawable().setDisplayConfigured(false); |
| getDrawable().invalidateSelf(); |
| } |
| |
| /** |
| * @return true if changed |
| */ |
| boolean setPauseAuth(boolean pauseAuth) { |
| if (pauseAuth != mPauseAuth) { |
| mPauseAuth = pauseAuth; |
| updateAlpha(); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * @return current alpha |
| */ |
| protected int updateAlpha() { |
| int alpha = calculateAlpha(); |
| getDrawable().setAlpha(alpha); |
| |
| // this is necessary so that touches won't be intercepted if udfps is paused: |
| if (mPauseAuth && alpha == 0 && getParent() != null) { |
| ((ViewGroup) getParent()).setVisibility(View.INVISIBLE); |
| } else { |
| ((ViewGroup) getParent()).setVisibility(View.VISIBLE); |
| } |
| |
| return alpha; |
| } |
| |
| int calculateAlpha() { |
| int alpha = expansionToAlpha(mNotificationShadeExpansion); |
| alpha *= mDialogSuggestedAlpha; |
| mAlpha = alpha; |
| |
| return mPauseAuth ? mAlpha : 255; |
| } |
| |
| boolean isPauseAuth() { |
| return mPauseAuth; |
| } |
| |
| private int expansionToAlpha(float expansion) { |
| // Fade to 0 opacity when reaching this expansion amount |
| final float maxExpansion = 0.4f; |
| |
| if (expansion >= maxExpansion) { |
| return 0; // transparent |
| } |
| |
| final float percent = expansion / maxExpansion; |
| return (int) ((1 - percent) * 255); |
| } |
| |
| /** |
| * Converts coordinates of RectF relative to the screen to coordinates relative to this view. |
| * |
| * @param bounds RectF based off screen coordinates in current orientation |
| */ |
| RectF getBoundsRelativeToView(RectF bounds) { |
| int[] pos = getLocationOnScreen(); |
| |
| RectF output = new RectF( |
| bounds.left - pos[0], |
| bounds.top - pos[1], |
| bounds.right - pos[0], |
| bounds.bottom - pos[1] |
| ); |
| |
| return output; |
| } |
| |
| /** |
| * Set the suggested alpha based on whether a dialog was recently shown or hidden. |
| * @param dialogSuggestedAlpha value from 0f to 1f. |
| */ |
| public void setDialogSuggestedAlpha(float dialogSuggestedAlpha) { |
| mDialogSuggestedAlpha = dialogSuggestedAlpha; |
| updateAlpha(); |
| } |
| |
| public float getDialogSuggestedAlpha() { |
| return mDialogSuggestedAlpha; |
| } |
| |
| /** |
| * Sets the amount the notification shade is expanded. This will influence the opacity of the |
| * this visual affordance. |
| * @param expansion amount the shade has expanded from 0f to 1f. |
| */ |
| public void onExpansionChanged(float expansion) { |
| mNotificationShadeExpansion = expansion; |
| updateAlpha(); |
| } |
| |
| /** |
| * @return true if handled |
| */ |
| boolean dozeTimeTick() { |
| return false; |
| } |
| } |