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Store predrawn icon in weak reference

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MM20 2023-05-16 14:42:36 +02:00
parent 3f9db4751f
commit e646844623
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GPG Key ID: 0B61A8F2DEAFA389
1 changed files with 5 additions and 4 deletions
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9
core/base/src/main/java/de/mm20/launcher2/icons/LauncherIcon.kt
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@ -14,6 +14,7 @@ import kotlinx.coroutines.sync.Semaphore
import kotlinx.coroutines.sync.withPermit
import kotlinx.coroutines.withContext
import palettes.TonalPalette
import java.lang.ref.WeakReference
sealed interface LauncherIcon
@ -29,19 +30,19 @@ data class StaticLauncherIcon(
val foregroundLayer: LauncherIconLayer,
val backgroundLayer: LauncherIconLayer,
) : LauncherIcon {
private var cachedBitmap: Bitmap? = null
private var cachedBitmap: WeakReference<Bitmap>? = null
private var cachedRenderSettings: LauncherIconRenderSettings? = null
private var renderSemaphore = Semaphore(1)
fun getCachedBitmap(settings: LauncherIconRenderSettings): Bitmap? {
return if (cachedRenderSettings == settings) cachedBitmap else null
return if (cachedRenderSettings == settings) cachedBitmap?.get() else null
}
/**
* Render this icon to a bitmap.
*/
suspend fun render(settings: LauncherIconRenderSettings): Bitmap {
val cachedBmp = cachedBitmap
val cachedBmp = cachedBitmap?.get()
if (cachedRenderSettings == settings && cachedBmp != null) return cachedBmp
val bmp = withContext(Dispatchers.Default) {
renderSemaphore.withPermit {
@ -56,7 +57,7 @@ data class StaticLauncherIcon(
})
renderLayer(canvas, backgroundLayer, settings.bgThemeColor, settings.bgTone)
renderLayer(canvas, foregroundLayer, settings.fgThemeColor, settings.fgTone)
cachedBitmap = bmp
cachedBitmap = WeakReference(bmp)
cachedRenderSettings = settings
bmp
}