1 /*
2  * Copyright (C) 2024 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.systemui.scene.ui.composable.transitions
18 
19 import androidx.compose.animation.core.Spring
20 import androidx.compose.animation.core.spring
21 import androidx.compose.animation.core.tween
22 import androidx.compose.foundation.gestures.Orientation
23 import androidx.compose.ui.unit.IntSize
24 import com.android.compose.animation.scene.Edge
25 import com.android.compose.animation.scene.TransitionBuilder
26 import com.android.compose.animation.scene.UserActionDistance
27 import com.android.compose.animation.scene.UserActionDistanceScope
28 import com.android.systemui.notifications.ui.composable.Notifications
29 import com.android.systemui.shade.ui.composable.OverlayShade
30 import com.android.systemui.shade.ui.composable.Shade
31 import com.android.systemui.shade.ui.composable.ShadeHeader
32 import kotlin.time.Duration.Companion.milliseconds
33 
TransitionBuildernull34 fun TransitionBuilder.toNotificationsShadeTransition(
35     durationScale: Double = 1.0,
36 ) {
37     spec = tween(durationMillis = (DefaultDuration * durationScale).inWholeMilliseconds.toInt())
38     swipeSpec =
39         spring(
40             stiffness = Spring.StiffnessMediumLow,
41             visibilityThreshold = Shade.Dimensions.ScrimVisibilityThreshold,
42         )
43     distance =
44         object : UserActionDistance {
45             override fun UserActionDistanceScope.absoluteDistance(
46                 fromSceneSize: IntSize,
47                 orientation: Orientation,
48             ): Float {
49                 return fromSceneSize.height.toFloat() * 2 / 3f
50             }
51         }
52 
53     translate(OverlayShade.Elements.Panel, Edge.Top)
54 
55     fractionRange(end = .5f) { fade(OverlayShade.Elements.Scrim) }
56 
57     fractionRange(start = .5f) {
58         fade(ShadeHeader.Elements.Clock)
59         fade(ShadeHeader.Elements.ExpandedContent)
60         fade(ShadeHeader.Elements.PrivacyChip)
61         fade(Notifications.Elements.NotificationScrim)
62     }
63 }
64 
65 private val DefaultDuration = 300.milliseconds
66