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Code Issues Packages Projects Releases Wiki Activity

avoiding extra bitmap allocations when loading notification avatars

This commit is contained in:
Adam Brown 2022-05-08 14:21:44 +01:00
parent d78000061e
commit ea2a960a3d
1 changed files with 9 additions and 4 deletions
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13
domains/android/imageloader/src/main/kotlin/app/dapk/st/imageloader/ImageLoader.kt
View File

@ -1,12 +1,13 @@
package app.dapk.st.imageloader
import android.content.Context
import android.graphics.drawable.BitmapDrawable
import android.graphics.drawable.Drawable
import android.graphics.drawable.Icon
import android.widget.ImageView
import androidx.core.graphics.drawable.toBitmap
import coil.imageLoader
import coil.request.ImageRequest
import coil.request.ImageResult
import coil.transform.CircleCropTransformation
import coil.transform.Transformation
import coil.load as coilLoad
@ -14,7 +15,6 @@ import coil.load as coilLoad
interface ImageLoader {
suspend fun load(url: String, transformation: Transformation? = null): Drawable?
}
interface IconLoader {
@ -31,19 +31,24 @@ class CachedIcons(private val imageLoader: ImageLoader) : IconLoader {
override suspend fun load(url: String): Icon? {
return cache.getOrPut(url) {
imageLoader.load(url, transformation = circleCrop)?.toBitmap()?.let {
imageLoader.load(url, transformation = circleCrop)?.asBitmap()?.let {
Icon.createWithBitmap(it)
}
}
}
}
private fun Drawable.asBitmap() = (this as? BitmapDrawable)?.bitmap
internal class CoilImageLoader(private val context: Context) : ImageLoader {
private val coil = context.imageLoader
override suspend fun load(url: String, transformation: Transformation?): Drawable? {
return internalLoad(url, transformation).drawable
}
private suspend fun internalLoad(url: String, transformation: Transformation?): ImageResult {
val request = ImageRequest.Builder(context)
.data(url)
.let {
@ -53,7 +58,7 @@ internal class CoilImageLoader(private val context: Context) : ImageLoader {
}
}
.build()
return coil.execute(request).drawable
return coil.execute(request)
}
}