Added avatar caching

src/main/kotlin/app/images/ImagesCache.kt

@@ -0,0 +1,6 @@
+package app.images
+
+interface ImagesCache {
+    fun getCachedObject(urlSource: String): ByteArray?
+    fun cacheImage(urlSource: String, image: ByteArray)
+}

src/main/kotlin/app/images/InMemoryImagesCache.kt

@@ -0,0 +1,13 @@
+package app.images
+
+object InMemoryImagesCache : ImagesCache {
+    private val cachedImages = hashMapOf<String, ByteArray>()
+
+    override fun getCachedObject(urlSource: String): ByteArray? {
+        return cachedImages[urlSource]
+    }
+
+    override fun cacheImage(urlSource: String, image: ByteArray) {
+        cachedImages[urlSource] = image
+    }
+}

src/main/kotlin/app/ui/CommitChanges.kt

@@ -32,6 +32,8 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.graphics.toComposeImageBitmap
 import app.ui.components.ScrollableLazyColumn
 import app.git.GitManager
+import app.images.ImagesCache
+import app.images.InMemoryImagesCache
 import app.theme.headerText
 import org.eclipse.jgit.lib.PersonIdent
 import org.jetbrains.skia.Image.Companion.makeFromEncoded
@@ -171,27 +173,33 @@ suspend fun loadImage(link: String): ByteArray = withContext(Dispatchers.IO) {
 }
 
 @Composable
-fun rememberNetworkImage(url: String): ImageBitmap {
+fun rememberNetworkImage(url: String, cache: ImagesCache = InMemoryImagesCache): ImageBitmap {
+    val cachedImage = cache.getCachedObject(url)
+
     var image by remember(url) {
-        mutableStateOf<ImageBitmap>(
-            useResource("image.jpg") {
-                makeFromEncoded(it.toByteArray()).toComposeImageBitmap()
-            }
-        )
+        if(cachedImage != null)
+            mutableStateOf(makeFromEncoded(cachedImage).toComposeImageBitmap())
+        else
+            mutableStateOf(
+                useResource("image.jpg") {
+                    makeFromEncoded(it.toByteArray()).toComposeImageBitmap()
+                }
+            )
     }
 
-
-    LaunchedEffect(url) {
-        try {
-            loadImage(url).let {
-                image = makeFromEncoded(it).toComposeImageBitmap()
+    if(cachedImage == null) {
+        LaunchedEffect(url) {
+            try {
+                loadImage(url).let {
+                    image = makeFromEncoded(it).toComposeImageBitmap()
+                    cache.cacheImage(url, it)
+                }
+            } catch (ex: Exception) {
+                println("Avatar loading failed: ${ex.message}")
             }
-        } catch (ex: Exception) {
-            println("Avatar loading failed: ${ex.message}")
         }
     }
 
-
     return image
 }
 

src/main/kotlin/app/ui/Log.kt

@@ -1,4 +1,5 @@
 @file:OptIn(ExperimentalComposeUiApi::class)
+@file:Suppress("UNUSED_PARAMETER")
 
 package app.ui
 
@@ -493,7 +494,7 @@ fun CommitNode(
             .border(2.dp, color, shape = CircleShape)
             .clip(CircleShape)
     ) {
-        val url = "https://www.gravatar.com/avatar/${plotCommit.authorIdent.emailAddress.md5}"
+        val url = "https://www.gravatar.com/avatar/${plotCommit.authorIdent.emailAddress.md5}?s=60"
         Image(
             bitmap = rememberNetworkImage(url),
             modifier = Modifier