kopia lustrzana https://github.com/vitorpamplona/amethyst
Allows Base64 images on profiles.
rodzic
64c9acb4b2
commit
188ef3762d
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@ -1,7 +1,13 @@
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package com.vitorpamplona.amethyst.ui.components
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import android.content.Context
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import android.graphics.BitmapFactory
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import android.net.Uri
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import androidx.compose.foundation.Image
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import androidx.compose.runtime.Composable
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import androidx.compose.runtime.Stable
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import androidx.compose.runtime.derivedStateOf
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import androidx.compose.runtime.getValue
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import androidx.compose.runtime.remember
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import androidx.compose.ui.Alignment
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import androidx.compose.ui.Modifier
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@ -11,9 +17,19 @@ import androidx.compose.ui.graphics.FilterQuality
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import androidx.compose.ui.graphics.drawscope.DrawScope
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import androidx.compose.ui.layout.ContentScale
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import androidx.compose.ui.platform.LocalContext
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import androidx.core.graphics.drawable.toDrawable
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import coil.ImageLoader
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import coil.compose.AsyncImage
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import coil.compose.AsyncImagePainter
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import coil.compose.rememberAsyncImagePainter
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import coil.decode.DataSource
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import coil.fetch.DrawableResult
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import coil.fetch.FetchResult
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import coil.fetch.Fetcher
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import coil.request.ImageRequest
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import coil.request.Options
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import com.vitorpamplona.amethyst.service.checkNotInMainThread
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import java.util.Base64
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@Composable
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fun RobohashAsyncImage(
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@ -67,19 +83,40 @@ fun RobohashFallbackAsyncImage(
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)
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if (model != null && loadProfilePicture) {
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AsyncImage(
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model = model,
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contentDescription = contentDescription,
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modifier = modifier,
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placeholder = painter,
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fallback = painter,
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error = painter,
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alignment = alignment,
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contentScale = contentScale,
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alpha = alpha,
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colorFilter = colorFilter,
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filterQuality = filterQuality
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)
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val isBase64 by remember {
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derivedStateOf {
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model.startsWith("data:image/jpeg;base64,")
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}
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}
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if (isBase64) {
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val painter = rememberAsyncImagePainter(
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model = Base64Requester.imageRequest(context, model)
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)
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Image(
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painter = painter,
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contentDescription = null,
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modifier = modifier,
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alignment = alignment,
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contentScale = contentScale,
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colorFilter = colorFilter
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)
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} else {
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AsyncImage(
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model = model,
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contentDescription = contentDescription,
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modifier = modifier,
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placeholder = painter,
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fallback = painter,
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error = painter,
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alignment = alignment,
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contentScale = contentScale,
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alpha = alpha,
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colorFilter = colorFilter,
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filterQuality = filterQuality
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)
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}
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} else {
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Image(
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painter = painter,
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@ -118,3 +155,45 @@ fun RobohashAsyncImageProxy(
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loadProfilePicture = loadProfilePicture
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)
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}
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object Base64Requester {
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fun imageRequest(context: Context, message: String): ImageRequest {
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return ImageRequest
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.Builder(context)
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.data(message)
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.fetcherFactory(Base64Fetcher.Factory)
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.build()
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}
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}
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@Stable
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class Base64Fetcher(
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private val options: Options,
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private val data: Uri
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) : Fetcher {
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override suspend fun fetch(): FetchResult {
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checkNotInMainThread()
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val base64String = data.toString().removePrefix("data:image/jpeg;base64,")
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val byteArray = Base64.getDecoder().decode(base64String)
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val bitmap = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.size)
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if (bitmap == null) {
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throw Exception("Unable to load base64 $base64String")
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}
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return DrawableResult(
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drawable = bitmap.toDrawable(options.context.resources),
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isSampled = false,
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dataSource = DataSource.MEMORY
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)
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}
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object Factory : Fetcher.Factory<Uri> {
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override fun create(data: Uri, options: Options, imageLoader: ImageLoader): Fetcher {
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return Base64Fetcher(options, data)
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}
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}
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}
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