FilterQuality.kt
/*
* Copyright 2018 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 androidx.compose.ui.graphics
import androidx.compose.runtime.Immutable
/**
* Quality levels for image filters.
* See [Paint.filterQuality].
*/
@Immutable
@kotlin.jvm.JvmInline
value class FilterQuality internal constructor(val value: Int) {
companion object {
/**
* Fastest possible filtering, albeit also the lowest quality
* Typically this implies nearest-neighbour filtering.
*/
val None = FilterQuality(0)
/**
* Better quality than [None], faster than [Medium].
* Typically this implies bilinear interpolation.
*/
val Low = FilterQuality(1)
/**
* Better quality than [Low], faster than [High].
*
* Typically this implies a combination of bilinear interpolation and
* pyramidal parametric prefiltering (mipmaps).
*/
val Medium = FilterQuality(2)
/**
* Best possible quality filtering, albeit also the slowest.
* Typically this implies bicubic interpolation or better.
*/
val High = FilterQuality(3)
}
override fun toString() = when (this) {
None -> "None"
Low -> "Low"
Medium -> "Medium"
High -> "High"
else -> "Unknown"
}
}