AndroidRenderEffect.android.kt
/*
* Copyright 2021 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 android.os.Build
import androidx.annotation.RequiresApi
import androidx.compose.runtime.Immutable
import androidx.compose.ui.geometry.Offset
/**
* Convert the [android.graphics.RenderEffect] instance into a Compose-compatible [RenderEffect]
*/
fun android.graphics.RenderEffect.asComposeRenderEffect(): RenderEffect =
AndroidRenderEffect(this)
@Immutable
actual sealed class RenderEffect {
private var internalRenderEffect: android.graphics.RenderEffect? = null
/**
* Obtain a [android.graphics.RenderEffect] from the compose [RenderEffect]
*/
@RequiresApi(Build.VERSION_CODES.S)
fun asAndroidRenderEffect(): android.graphics.RenderEffect =
internalRenderEffect ?: createRenderEffect().also { internalRenderEffect = it }
@RequiresApi(Build.VERSION_CODES.S)
protected abstract fun createRenderEffect(): android.graphics.RenderEffect
actual open fun isSupported(): Boolean = Build.VERSION.SDK_INT >= Build.VERSION_CODES.S
}
@Immutable
internal class AndroidRenderEffect(
val androidRenderEffect: android.graphics.RenderEffect
) : RenderEffect() {
override fun createRenderEffect(): android.graphics.RenderEffect = androidRenderEffect
}
@Immutable
actual class BlurEffect actual constructor(
private val renderEffect: RenderEffect?,
private val radiusX: Float,
private val radiusY: Float,
private val edgeTreatment: TileMode
) : RenderEffect() {
@RequiresApi(Build.VERSION_CODES.S)
override fun createRenderEffect(): android.graphics.RenderEffect =
RenderEffectVerificationHelper.createBlurEffect(
renderEffect,
radiusX,
radiusY,
edgeTreatment
)
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (other !is BlurEffect) return false
if (radiusX != other.radiusX) return false
if (radiusY != other.radiusY) return false
if (edgeTreatment != other.edgeTreatment) return false
if (renderEffect != other.renderEffect) return false
return true
}
override fun hashCode(): Int {
var result = renderEffect?.hashCode() ?: 0
result = 31 * result + radiusX.hashCode()
result = 31 * result + radiusY.hashCode()
result = 31 * result + edgeTreatment.hashCode()
return result
}
override fun toString(): String {
return "BlurEffect(renderEffect=$renderEffect, radiusX=$radiusX, radiusY=$radiusY, " +
"edgeTreatment=$edgeTreatment)"
}
}
@Immutable
actual class OffsetEffect actual constructor(
private val renderEffect: RenderEffect?,
private val offset: Offset
) : RenderEffect() {
@RequiresApi(Build.VERSION_CODES.S)
override fun createRenderEffect(): android.graphics.RenderEffect =
RenderEffectVerificationHelper.createOffsetEffect(renderEffect, offset)
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (other !is OffsetEffect) return false
if (renderEffect != other.renderEffect) return false
if (offset != other.offset) return false
return true
}
override fun hashCode(): Int {
var result = renderEffect?.hashCode() ?: 0
result = 31 * result + offset.hashCode()
return result
}
override fun toString(): String {
return "OffsetEffect(renderEffect=$renderEffect, offset=$offset)"
}
}
@RequiresApi(Build.VERSION_CODES.S)
private object RenderEffectVerificationHelper {
@androidx.annotation.DoNotInline
fun createBlurEffect(
inputRenderEffect: RenderEffect?,
radiusX: Float,
radiusY: Float,
edgeTreatment: TileMode
): android.graphics.RenderEffect =
if (inputRenderEffect == null) {
android.graphics.RenderEffect.createBlurEffect(
radiusX,
radiusY,
edgeTreatment.toAndroidTileMode()
)
} else {
android.graphics.RenderEffect.createBlurEffect(
radiusX,
radiusY,
inputRenderEffect.asAndroidRenderEffect(),
edgeTreatment.toAndroidTileMode()
)
}
@androidx.annotation.DoNotInline
fun createOffsetEffect(
inputRenderEffect: RenderEffect?,
offset: Offset
): android.graphics.RenderEffect =
if (inputRenderEffect == null) {
android.graphics.RenderEffect.createOffsetEffect(offset.x, offset.y)
} else {
android.graphics.RenderEffect.createOffsetEffect(
offset.x,
offset.y,
inputRenderEffect.asAndroidRenderEffect()
)
}
}