Uwais Ashraf
b6a733843c
Bug: 369590189 Flag: com.android.launcher3.enable_refactor_task_thumbnail Test: Presubmits Change-Id: I1becdcdf2fffd2c1fe548e7f182a7fd851be3c08
80 lines
2.7 KiB
Kotlin
80 lines
2.7 KiB
Kotlin
/*
|
|
* Copyright (C) 2025 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.quickstep
|
|
|
|
import android.content.res.Resources
|
|
import com.android.quickstep.recents.data.HighResLoadingStateNotifier
|
|
|
|
/** Determines when high res or low res thumbnails should be loaded. */
|
|
class HighResLoadingState : HighResLoadingStateNotifier {
|
|
// If the device does not support low-res thumbnails, only attempt to load high-res thumbnails
|
|
private val forceHighResThumbnails = !supportsLowResThumbnails()
|
|
var visible: Boolean = false
|
|
set(value) {
|
|
field = value
|
|
updateState()
|
|
}
|
|
|
|
var flingingFast = false
|
|
set(value) {
|
|
field = value
|
|
updateState()
|
|
}
|
|
|
|
var isEnabled: Boolean = false
|
|
private set
|
|
|
|
private val callbacks = ArrayList<HighResLoadingStateChangedCallback>()
|
|
|
|
interface HighResLoadingStateChangedCallback {
|
|
fun onHighResLoadingStateChanged(enabled: Boolean)
|
|
}
|
|
|
|
override fun addCallback(callback: HighResLoadingStateChangedCallback) {
|
|
callbacks.add(callback)
|
|
}
|
|
|
|
override fun removeCallback(callback: HighResLoadingStateChangedCallback) {
|
|
callbacks.remove(callback)
|
|
}
|
|
|
|
private fun updateState() {
|
|
val prevState = isEnabled
|
|
isEnabled = forceHighResThumbnails || (visible && !flingingFast)
|
|
if (prevState != isEnabled) {
|
|
for (callback in callbacks.asReversed()) {
|
|
callback.onHighResLoadingStateChanged(isEnabled)
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns Whether device supports low-res thumbnails. Low-res files are an optimization for
|
|
* faster load times of snapshots. Devices can optionally disable low-res files so that they
|
|
* only store snapshots at high-res scale. The actual scale can be configured in frameworks/base
|
|
* config overlay.
|
|
*/
|
|
private fun supportsLowResThumbnails(): Boolean {
|
|
val res = Resources.getSystem()
|
|
val resId = res.getIdentifier("config_lowResTaskSnapshotScale", "dimen", "android")
|
|
if (resId != 0) {
|
|
return 0 < res.getFloat(resId)
|
|
}
|
|
return true
|
|
}
|
|
}
|