Add Horologist module and initial classes that are going to be needed for wear project. (c8b98571) · Commits · e / os / android_frameworks_base

packages/CredentialManager/horologist/Android.bp

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		package {
		// See: http://go/android-license-faq
		// A large-scale-change added 'default_applicable_licenses' to import
		// all of the 'license_kinds' from "frameworks_base_license"
		// to get the below license kinds:
		// SPDX-license-identifier-Apache-2.0
		default_applicable_licenses: ["frameworks_base_license"],
		}

		// TODO: ag/24733147 - Remove this project once it is imported.
		android_library {
		name: "Horologist",
		manifest: "AndroidManifest.xml",
		srcs: ["src/*/.kt"],
		static_libs: [
		"androidx.compose.foundation_foundation",
		"androidx.compose.runtime_runtime",
		"androidx.compose.ui_ui",
		"androidx.navigation_navigation-compose",
		"androidx.lifecycle_lifecycle-extensions",
		"androidx.lifecycle_lifecycle-runtime-ktx",
		"androidx.lifecycle_lifecycle-viewmodel-compose",
		"androidx.wear.compose_compose-foundation",
		"androidx.wear.compose_compose-material",
		"androidx.wear.compose_compose-navigation",
		],
		}

packages/CredentialManager/horologist/AndroidManifest.xml

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		<?xml version="1.0" encoding="utf-8"?>
		<!--
		/*
		* Copyright (c) 2023 Google Inc.
		*
		* 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.
		*/
		-->
		<manifest xmlns:android="http://schemas.android.com/apk/res/android"
		package="com.google.android.horologist">

		<uses-feature android:name="android.hardware.type.watch" />

		</manifest>

packages/CredentialManager/horologist/src/com/google/android/horologist/annotations/ExperimentalHorologistApi.kt

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		/*
		* Copyright 2023 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
		*
		* https://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.google.android.horologist.annotations

		@RequiresOptIn(
		message = "Horologist API is experimental. The API may be changed in the future.",
		)
		@Retention(AnnotationRetention.BINARY)
		public annotation class ExperimentalHorologistApi

packages/CredentialManager/horologist/src/com/google/android/horologist/compose/layout/ScalingLazyColumnDefaults.kt

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		/*
		* Copyright 2022 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
		*
		* https://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.
		*/

		@file:Suppress("ObjectLiteralToLambda")

		package com.google.android.horologist.compose.layout

		import androidx.compose.foundation.layout.Arrangement
		import androidx.compose.foundation.layout.PaddingValues
		import androidx.compose.runtime.Composable
		import androidx.compose.runtime.remember
		import androidx.compose.ui.Alignment
		import androidx.compose.ui.platform.LocalConfiguration
		import androidx.compose.ui.platform.LocalDensity
		import androidx.compose.ui.unit.Dp
		import androidx.compose.ui.unit.dp
		import androidx.wear.compose.foundation.lazy.AutoCenteringParams
		import androidx.wear.compose.foundation.lazy.ScalingLazyListAnchorType
		import com.google.android.horologist.annotations.ExperimentalHorologistApi
		import com.google.android.horologist.compose.layout.ScalingLazyColumnState.RotaryMode

		/**
		* Default layouts for ScalingLazyColumnState, based on UX guidance.
		*/
		public object ScalingLazyColumnDefaults {
		/**
		* Layout the first item, directly under the time text.
		* This is positioned from the top of the screen instead of the
		* center.
		*/
		@ExperimentalHorologistApi
		public fun belowTimeText(
		rotaryMode: RotaryMode = RotaryMode.Scroll,
		firstItemIsFullWidth: Boolean = false,
		verticalArrangement: Arrangement.Vertical =
		Arrangement.spacedBy(
		space = 4.dp,
		alignment = Alignment.Top,
		),
		horizontalAlignment: Alignment.Horizontal = Alignment.CenterHorizontally,
		contentPadding: PaddingValues = PaddingValues(horizontal = 10.dp),
		topPaddingDp: Dp = 32.dp + (if (firstItemIsFullWidth) 20.dp else 0.dp),
		): ScalingLazyColumnState.Factory {
		return object : ScalingLazyColumnState.Factory {
		@Composable
		override fun create(): ScalingLazyColumnState {
		val density = LocalDensity.current
		val configuration = LocalConfiguration.current

		return remember {
		val screenHeightPx =
		with(density) { configuration.screenHeightDp.dp.roundToPx() }
		val topPaddingPx = with(density) { topPaddingDp.roundToPx() }
		val topScreenOffsetPx = screenHeightPx / 2 - topPaddingPx

		ScalingLazyColumnState(
		initialScrollPosition = ScalingLazyColumnState.ScrollPosition(
		index = 0,
		offsetPx = topScreenOffsetPx,
		),
		anchorType = ScalingLazyListAnchorType.ItemStart,
		rotaryMode = rotaryMode,
		verticalArrangement = verticalArrangement,
		horizontalAlignment = horizontalAlignment,
		contentPadding = contentPadding,
		)
		}
		}
		}
		}

		/**
		* Layout the item [initialCenterIndex] at [initialCenterOffset] from the
		* center of the screen.
		*/
		@ExperimentalHorologistApi
		public fun scalingLazyColumnDefaults(
		rotaryMode: RotaryMode = RotaryMode.Scroll,
		initialCenterIndex: Int = 1,
		initialCenterOffset: Int = 0,
		verticalArrangement: Arrangement.Vertical =
		Arrangement.spacedBy(
		space = 4.dp,
		alignment = Alignment.Top,
		),
		horizontalAlignment: Alignment.Horizontal = Alignment.CenterHorizontally,
		contentPadding: PaddingValues = PaddingValues(horizontal = 10.dp),
		autoCentering: AutoCenteringParams? = AutoCenteringParams(
		initialCenterIndex,
		initialCenterOffset,
		),
		anchorType: ScalingLazyListAnchorType = ScalingLazyListAnchorType.ItemCenter,
		hapticsEnabled: Boolean = true,
		reverseLayout: Boolean = false,
		): ScalingLazyColumnState.Factory {
		return object : ScalingLazyColumnState.Factory {
		@Composable
		override fun create(): ScalingLazyColumnState {
		return remember {
		ScalingLazyColumnState(
		initialScrollPosition = ScalingLazyColumnState.ScrollPosition(
		index = initialCenterIndex,
		offsetPx = initialCenterOffset,
		),
		rotaryMode = rotaryMode,
		verticalArrangement = verticalArrangement,
		horizontalAlignment = horizontalAlignment,
		contentPadding = contentPadding,
		autoCentering = autoCentering,
		anchorType = anchorType,
		hapticsEnabled = hapticsEnabled,
		reverseLayout = reverseLayout,
		)
		}
		}
		}
		}
		}

packages/CredentialManager/horologist/src/com/google/android/horologist/compose/layout/ScalingLazyColumnState.kt

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		/*
		* Copyright 2022 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
		*
		* https://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.
		*/

		@file:Suppress("ObjectLiteralToLambda")
		@file:OptIn(ExperimentalHorologistApi::class, ExperimentalWearFoundationApi::class)

		package com.google.android.horologist.compose.layout

		import androidx.compose.foundation.gestures.FlingBehavior
		import androidx.compose.foundation.gestures.ScrollableDefaults
		import androidx.compose.foundation.layout.Arrangement
		import androidx.compose.foundation.layout.PaddingValues
		import androidx.compose.runtime.Composable
		import androidx.compose.runtime.saveable.rememberSaveable
		import androidx.compose.ui.Alignment
		import androidx.compose.ui.Modifier
		import androidx.compose.ui.unit.dp
		import androidx.wear.compose.foundation.ExperimentalWearFoundationApi
		import androidx.wear.compose.foundation.lazy.AutoCenteringParams
		import androidx.wear.compose.foundation.lazy.ScalingLazyColumn
		import androidx.wear.compose.foundation.lazy.ScalingLazyListAnchorType
		import androidx.wear.compose.foundation.lazy.ScalingLazyListScope
		import androidx.wear.compose.foundation.lazy.ScalingLazyListState
		import androidx.wear.compose.foundation.lazy.ScalingParams
		import androidx.wear.compose.foundation.rememberActiveFocusRequester
		import com.google.android.horologist.annotations.ExperimentalHorologistApi
		import com.google.android.horologist.compose.layout.ScalingLazyColumnState.RotaryMode
		import com.google.android.horologist.compose.rotaryinput.rememberDisabledHaptic
		import com.google.android.horologist.compose.rotaryinput.rememberRotaryHapticHandler
		import com.google.android.horologist.compose.rotaryinput.rotaryWithScroll
		import com.google.android.horologist.compose.rotaryinput.rotaryWithSnap
		import com.google.android.horologist.compose.rotaryinput.toRotaryScrollAdapter
		import androidx.wear.compose.foundation.lazy.ScalingLazyColumnDefaults as WearScalingLazyColumnDefaults

		/**
		* A Config and State object wrapping up all configuration for a [ScalingLazyColumn].
		* This allows defaults such as [ScalingLazyColumnDefaults.belowTimeText].
		*/
		@ExperimentalHorologistApi
		public class ScalingLazyColumnState(
		public val initialScrollPosition: ScrollPosition = ScrollPosition(1, 0),
		public val autoCentering: AutoCenteringParams? = AutoCenteringParams(
		initialScrollPosition.index,
		initialScrollPosition.offsetPx,
		),
		public val anchorType: ScalingLazyListAnchorType = ScalingLazyListAnchorType.ItemCenter,
		public val contentPadding: PaddingValues = PaddingValues(horizontal = 10.dp),
		public val rotaryMode: RotaryMode = RotaryMode.Scroll,
		public val reverseLayout: Boolean = false,
		public val verticalArrangement: Arrangement.Vertical =
		Arrangement.spacedBy(
		space = 4.dp,
		alignment = if (!reverseLayout) Alignment.Top else Alignment.Bottom,
		),
		public val horizontalAlignment: Alignment.Horizontal = Alignment.CenterHorizontally,
		public val flingBehavior: FlingBehavior? = null,
		public val userScrollEnabled: Boolean = true,
		public val scalingParams: ScalingParams = WearScalingLazyColumnDefaults.scalingParams(),
		public val hapticsEnabled: Boolean = true,
		) {
		private var _state: ScalingLazyListState? = null
		public var state: ScalingLazyListState
		get() {
		if (_state == null) {
		_state = ScalingLazyListState(
		initialScrollPosition.index,
		initialScrollPosition.offsetPx,
		)
		}
		return _state!!
		}
		set(value) {
		_state = value
		}

		public sealed interface RotaryMode {
		public object Snap : RotaryMode
		public object Scroll : RotaryMode

		@Deprecated(
		"Use RotaryMode.Scroll instead",
		replaceWith = ReplaceWith("RotaryMode.Scroll"),
		)
		public object Fling : RotaryMode
		}

		public data class ScrollPosition(
		val index: Int,
		val offsetPx: Int,
		)

		public fun interface Factory {
		@Composable
		public fun create(): ScalingLazyColumnState
		}
		}

		@Composable
		public fun rememberColumnState(
		factory: ScalingLazyColumnState.Factory = ScalingLazyColumnDefaults.belowTimeText(),
		): ScalingLazyColumnState {
		val columnState = factory.create()

		columnState.state = rememberSaveable(saver = ScalingLazyListState.Saver) {
		columnState.state
		}

		return columnState
		}

		@ExperimentalHorologistApi
		@Composable
		public fun ScalingLazyColumn(
		columnState: ScalingLazyColumnState,
		modifier: Modifier = Modifier,
		content: ScalingLazyListScope.() -> Unit,
		) {
		val focusRequester = rememberActiveFocusRequester()

		val rotaryHaptics = if (columnState.hapticsEnabled) {
		rememberRotaryHapticHandler(columnState.state)
		} else {
		rememberDisabledHaptic()
		}
		val modifierWithRotary = when (columnState.rotaryMode) {
		RotaryMode.Snap -> modifier.rotaryWithSnap(
		focusRequester = focusRequester,
		rotaryScrollAdapter = columnState.state.toRotaryScrollAdapter(),
		reverseDirection = columnState.reverseLayout,
		rotaryHaptics = rotaryHaptics,
		)

		else -> modifier.rotaryWithScroll(
		focusRequester = focusRequester,
		scrollableState = columnState.state,
		reverseDirection = columnState.reverseLayout,
		rotaryHaptics = rotaryHaptics,
		)
		}

		ScalingLazyColumn(
		modifier = modifierWithRotary,
		state = columnState.state,
		contentPadding = columnState.contentPadding,
		reverseLayout = columnState.reverseLayout,
		verticalArrangement = columnState.verticalArrangement,
		horizontalAlignment = columnState.horizontalAlignment,
		flingBehavior = columnState.flingBehavior ?: ScrollableDefaults.flingBehavior(),
		userScrollEnabled = columnState.userScrollEnabled,
		scalingParams = columnState.scalingParams,
		anchorType = columnState.anchorType,
		autoCentering = columnState.autoCentering,
		content = content,
		)
		}