mirror of
https://github.com/LawnchairLauncher/lawnchair.git
synced 2026-02-19 18:58:19 +00:00
59 lines
2.3 KiB
Kotlin
59 lines
2.3 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.launcher3.util
|
||
|
|
|
||
|
|
import android.animation.TimeInterpolator
|
||
|
|
import android.graphics.drawable.Drawable
|
||
|
|
import androidx.compose.animation.core.Easing
|
||
|
|
import androidx.compose.runtime.Composable
|
||
|
|
import androidx.compose.runtime.remember
|
||
|
|
import androidx.compose.ui.graphics.asImageBitmap
|
||
|
|
import androidx.compose.ui.graphics.painter.BitmapPainter
|
||
|
|
import androidx.compose.ui.graphics.painter.Painter
|
||
|
|
import androidx.compose.ui.tooling.preview.Preview
|
||
|
|
import androidx.core.graphics.drawable.toBitmap
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Converts a [TimeInterpolator] to a compose [Easing].
|
||
|
|
*
|
||
|
|
* This function allows you to use Android's [TimeInterpolator] instances, such as those defined in
|
||
|
|
* `android.R.interpolator`, directly with Compose animations that expect an [Easing].
|
||
|
|
*/
|
||
|
|
fun TimeInterpolator.toComposeEasing(): Easing = Easing { fraction -> getInterpolation(fraction) }
|
||
|
|
|
||
|
|
/**
|
||
|
|
* A composable function that takes a [Drawable] and converts it into a [Painter] which can be used
|
||
|
|
* to draw the drawable on a Compose canvas.
|
||
|
|
*
|
||
|
|
* This function uses [remember] to cache the conversion of the [Drawable] to an [ImageBitmap]. This
|
||
|
|
* means that if the same [Drawable] instance is provided across recompositions, the conversion will
|
||
|
|
* only happen once, improving performance.
|
||
|
|
*/
|
||
|
|
@Composable
|
||
|
|
fun painterResource(drawable: Drawable): Painter {
|
||
|
|
val imageBitmap = remember(drawable) { drawable.toBitmap().asImageBitmap() }
|
||
|
|
return BitmapPainter(imageBitmap)
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* A multi-preview annotation that displays the same Composable with different font scales.
|
||
|
|
*/
|
||
|
|
@Preview(name = "normal font", group = "font scales", fontScale = 1f)
|
||
|
|
@Preview(name = "large font", group = "font scales", fontScale = 2f)
|
||
|
|
annotation class FontScalePreviews
|