mirror of
https://github.com/material-components/material-components-android.git
synced 2026-01-16 18:01:42 +08:00
11068909c2
Resolves https://github.com/material-components/material-components-android/issues/4307 PiperOrigin-RevId: 678679393
301 lines
10 KiB
Java
301 lines
10 KiB
Java
/*
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* Copyright 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.android.material.motion;
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import com.google.android.material.R;
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import static androidx.annotation.RestrictTo.Scope.LIBRARY_GROUP;
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import static com.google.android.material.animation.AnimationUtils.lerp;
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import static java.lang.Math.max;
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import static java.lang.Math.min;
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import android.animation.Animator;
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import android.animation.AnimatorListenerAdapter;
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import android.animation.AnimatorSet;
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import android.animation.ObjectAnimator;
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import android.animation.ValueAnimator;
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import android.content.res.Resources;
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import android.graphics.Rect;
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import android.os.Build.VERSION;
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import android.os.Build.VERSION_CODES;
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import android.util.DisplayMetrics;
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import android.view.RoundedCorner;
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import android.view.View;
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import android.view.WindowInsets;
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import androidx.activity.BackEventCompat;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.annotation.RequiresApi;
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import androidx.annotation.RestrictTo;
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import androidx.annotation.VisibleForTesting;
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import com.google.android.material.animation.AnimationUtils;
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import com.google.android.material.internal.ClippableRoundedCornerLayout;
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import com.google.android.material.internal.ViewUtils;
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/**
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* Utility class for main container views usually filling the entire screen (e.g., search view) that
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* support back progress animations.
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*
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* @hide
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*/
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@RestrictTo(LIBRARY_GROUP)
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public class MaterialMainContainerBackHelper extends MaterialBackAnimationHelper<View> {
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private static final float MIN_SCALE = 0.9f;
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private final float minEdgeGap;
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private final float maxTranslationY;
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private float initialTouchY;
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@Nullable private Rect initialHideToClipBounds;
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@Nullable private Rect initialHideFromClipBounds;
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@Nullable private float[] expandedCornerRadii;
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public MaterialMainContainerBackHelper(@NonNull View view) {
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super(view);
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Resources resources = view.getResources();
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minEdgeGap = resources.getDimension(R.dimen.m3_back_progress_main_container_min_edge_gap);
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maxTranslationY =
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resources.getDimension(R.dimen.m3_back_progress_main_container_max_translation_y);
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}
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@Nullable
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public Rect getInitialHideToClipBounds() {
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return initialHideToClipBounds;
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}
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@Nullable
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public Rect getInitialHideFromClipBounds() {
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return initialHideFromClipBounds;
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}
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public void startBackProgress(@NonNull BackEventCompat backEvent, @Nullable View collapsedView) {
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super.onStartBackProgress(backEvent);
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startBackProgress(backEvent.getTouchY(), collapsedView);
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}
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@VisibleForTesting
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public void startBackProgress(float touchY, @Nullable View collapsedView) {
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initialHideToClipBounds = ViewUtils.calculateRectFromBounds(view);
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if (collapsedView != null) {
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initialHideFromClipBounds = ViewUtils.calculateOffsetRectFromBounds(view, collapsedView);
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}
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initialTouchY = touchY;
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}
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public void updateBackProgress(
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@NonNull BackEventCompat backEvent, @Nullable View collapsedView, float collapsedCornerSize) {
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if (super.onUpdateBackProgress(backEvent) == null) {
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return;
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}
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if (collapsedView != null && collapsedView.getVisibility() != View.INVISIBLE) {
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collapsedView.setVisibility(View.INVISIBLE);
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}
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boolean leftSwipeEdge = backEvent.getSwipeEdge() == BackEventCompat.EDGE_LEFT;
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updateBackProgress(
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backEvent.getProgress(), leftSwipeEdge, backEvent.getTouchY(), collapsedCornerSize);
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}
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@VisibleForTesting
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public void updateBackProgress(
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float progress, boolean leftSwipeEdge, float touchY, float collapsedCornerSize) {
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progress = interpolateProgress(progress);
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float width = view.getWidth();
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float height = view.getHeight();
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if (width <= 0f || height <= 0f) {
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return;
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}
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float scale = lerp(1, MIN_SCALE, progress);
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float availableHorizontalSpace = max(0, (width - MIN_SCALE * width) / 2 - minEdgeGap);
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float translationX = lerp(0, availableHorizontalSpace, progress) * (leftSwipeEdge ? 1 : -1);
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float availableVerticalSpace = max(0, (height - scale * height) / 2 - minEdgeGap);
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float maxTranslationY = min(availableVerticalSpace, this.maxTranslationY);
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float yDelta = touchY - initialTouchY;
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float yProgress = Math.abs(yDelta) / height;
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float translationYDirection = Math.signum(yDelta);
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float translationY = AnimationUtils.lerp(0, maxTranslationY, yProgress) * translationYDirection;
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if (Float.isNaN(scale) || Float.isNaN(translationX) || Float.isNaN(translationY)) {
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return;
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}
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view.setScaleX(scale);
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view.setScaleY(scale);
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view.setTranslationX(translationX);
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view.setTranslationY(translationY);
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if (view instanceof ClippableRoundedCornerLayout) {
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((ClippableRoundedCornerLayout) view)
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.updateCornerRadii(
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lerpCornerRadii(getExpandedCornerRadii(), collapsedCornerSize, progress));
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}
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}
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public void finishBackProgress(long duration, @Nullable View collapsedView) {
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AnimatorSet resetAnimator = createResetScaleAndTranslationAnimator(collapsedView);
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resetAnimator.setDuration(duration);
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resetAnimator.start();
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resetInitialValues();
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}
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public void cancelBackProgress(@Nullable View collapsedView) {
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if (super.onCancelBackProgress() == null) {
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return;
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}
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AnimatorSet cancelAnimatorSet = createResetScaleAndTranslationAnimator(collapsedView);
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if (view instanceof ClippableRoundedCornerLayout) {
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cancelAnimatorSet.playTogether(createCornerAnimator((ClippableRoundedCornerLayout) view));
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}
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cancelAnimatorSet.setDuration(cancelDuration);
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cancelAnimatorSet.start();
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resetInitialValues();
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}
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private void resetInitialValues() {
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initialTouchY = 0f;
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initialHideToClipBounds = null;
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initialHideFromClipBounds = null;
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}
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@NonNull
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private AnimatorSet createResetScaleAndTranslationAnimator(@Nullable View collapsedView) {
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AnimatorSet animatorSet = new AnimatorSet();
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animatorSet.playTogether(
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ObjectAnimator.ofFloat(view, View.SCALE_X, 1),
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ObjectAnimator.ofFloat(view, View.SCALE_Y, 1),
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ObjectAnimator.ofFloat(view, View.TRANSLATION_X, 0),
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ObjectAnimator.ofFloat(view, View.TRANSLATION_Y, 0));
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animatorSet.addListener(
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new AnimatorListenerAdapter() {
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@Override
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public void onAnimationEnd(Animator animation) {
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if (collapsedView != null) {
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collapsedView.setVisibility(View.VISIBLE);
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}
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}
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});
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return animatorSet;
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}
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@NonNull
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private ValueAnimator createCornerAnimator(
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ClippableRoundedCornerLayout clippableRoundedCornerLayout) {
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ValueAnimator cornerAnimator =
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ValueAnimator.ofObject(
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(fraction, startValue, endValue) ->
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lerpCornerRadii((float[]) startValue, (float[]) endValue, fraction),
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clippableRoundedCornerLayout.getCornerRadii(),
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getExpandedCornerRadii());
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cornerAnimator.addUpdateListener(
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animation ->
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clippableRoundedCornerLayout.updateCornerRadii((float[]) animation.getAnimatedValue()));
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return cornerAnimator;
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}
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private static float[] lerpCornerRadii(float[] startValue, float[] endValue, float fraction) {
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return new float[] {
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lerp(startValue[0], endValue[0], fraction),
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lerp(startValue[1], endValue[1], fraction),
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lerp(startValue[2], endValue[2], fraction),
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lerp(startValue[3], endValue[3], fraction),
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lerp(startValue[4], endValue[4], fraction),
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lerp(startValue[5], endValue[5], fraction),
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lerp(startValue[6], endValue[6], fraction),
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lerp(startValue[7], endValue[7], fraction)
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};
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}
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private static float[] lerpCornerRadii(float[] startValue, float endValue, float fraction) {
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return new float[] {
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lerp(startValue[0], endValue, fraction),
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lerp(startValue[1], endValue, fraction),
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lerp(startValue[2], endValue, fraction),
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lerp(startValue[3], endValue, fraction),
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lerp(startValue[4], endValue, fraction),
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lerp(startValue[5], endValue, fraction),
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lerp(startValue[6], endValue, fraction),
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lerp(startValue[7], endValue, fraction)
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};
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}
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@NonNull
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public float[] getExpandedCornerRadii() {
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if (expandedCornerRadii == null) {
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expandedCornerRadii = calculateExpandedCornerRadii();
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}
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return expandedCornerRadii;
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}
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public void clearExpandedCornerRadii() {
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expandedCornerRadii = null;
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}
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private float[] calculateExpandedCornerRadii() {
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if (VERSION.SDK_INT >= VERSION_CODES.S) {
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final WindowInsets insets = view.getRootWindowInsets();
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if (insets != null) {
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DisplayMetrics displayMetrics = view.getResources().getDisplayMetrics();
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int screenWidth = displayMetrics.widthPixels;
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int screenHeight = displayMetrics.heightPixels;
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int[] location = new int[2];
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view.getLocationOnScreen(location);
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int x = location[0];
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int y = location[1];
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int width = view.getWidth();
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int height = view.getHeight();
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int topLeft =
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x == 0 && y == 0 ? getRoundedCornerRadius(insets, RoundedCorner.POSITION_TOP_LEFT) : 0;
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int topRight =
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x + width >= screenWidth && y == 0
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? getRoundedCornerRadius(insets, RoundedCorner.POSITION_TOP_RIGHT)
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: 0;
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int bottomRight =
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x + width >= screenWidth && y + height >= screenHeight
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? getRoundedCornerRadius(insets, RoundedCorner.POSITION_BOTTOM_RIGHT)
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: 0;
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int bottomLeft =
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x == 0 && y + height >= screenHeight
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? getRoundedCornerRadius(insets, RoundedCorner.POSITION_BOTTOM_LEFT)
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: 0;
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return new float[] {
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topLeft, topLeft, topRight, topRight, bottomRight, bottomRight, bottomLeft, bottomLeft
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};
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}
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}
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return new float[] {0, 0, 0, 0, 0, 0, 0, 0};
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}
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@RequiresApi(VERSION_CODES.S)
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private int getRoundedCornerRadius(WindowInsets insets, int position) {
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final RoundedCorner roundedCorner = insets.getRoundedCorner(position);
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return roundedCorner != null ? roundedCorner.getRadius() : 0;
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}
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}
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