Replaced elmo avatar placeholder by Color+Initial

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

@@ -49,16 +49,18 @@ object NetworkImageLoader {
     }
 }
 
-
 @Composable
-fun rememberNetworkImage(url: String): ImageBitmap {
+fun rememberNetworkImageOrNull(url: String, placeHolderImageRes: String? = null): ImageBitmap? {
     val networkImageLoader = NetworkImageLoader
     var image by remember(url) {
-        mutableStateOf(
-            useResource("image.jpg") {
+        val placeHolderImage = if(placeHolderImageRes != null)
+            useResource(placeHolderImageRes) {
                 Image.makeFromEncoded(it.toByteArray()).toComposeImageBitmap()
             }
-        )
+        else
+            null
+
+        mutableStateOf(placeHolderImage)
     }
 
     LaunchedEffect(url) {
@@ -71,4 +73,3 @@ fun rememberNetworkImage(url: String): ImageBitmap {
 }
 
 fun ByteArray.toComposeImage() = Image.makeFromEncoded(this).toComposeImageBitmap()
-

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

@@ -20,11 +20,11 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import app.extensions.*
 import app.git.GitManager
-import app.images.rememberNetworkImage
 import app.theme.headerBackground
 import app.theme.headerText
 import app.theme.primaryTextColor
 import app.theme.secondaryTextColor
+import app.ui.components.AvatarImage
 import app.ui.components.ScrollableLazyColumn
 import app.ui.components.TooltipText
 import org.eclipse.jgit.diff.DiffEntry
@@ -108,14 +108,11 @@ fun Author(commit: RevCommit) {
             .background(MaterialTheme.colors.background),
         verticalAlignment = Alignment.CenterVertically
     ) {
-        val url = "https://www.gravatar.com/avatar/${authorIdent.emailAddress.md5}"
-        Image(
-            bitmap = rememberNetworkImage(url),
+        AvatarImage(
             modifier = Modifier
                 .padding(horizontal = 16.dp)
-                .height(40.dp)
-                .clip(CircleShape),
-            contentDescription = null,
+                .size(40.dp),
+            personIdent = commit.authorIdent,
         )
 
         Column(

src/main/kotlin/app/ui/components/AvatarImage.kt

@@ -0,0 +1,62 @@
+package app.ui.components
+
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.ImageBitmap
+import app.extensions.md5
+import app.images.rememberNetworkImageOrNull
+import org.eclipse.jgit.lib.PersonIdent
+
+@Composable
+fun AvatarImage(
+    modifier: Modifier = Modifier,
+    personIdent: PersonIdent,
+    color: Color = MaterialTheme.colors.primary
+) {
+    Box(
+        modifier = modifier
+            .clip(CircleShape)
+    ) {
+        val avatar = rememberAvatar(personIdent.emailAddress)
+        if(avatar == null) {
+            Box(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .background(color),
+                contentAlignment = Alignment.Center,
+            ) {
+                Text(
+                    text = personIdent.name.firstOrNull()?.uppercase() ?: "#",
+                    color = Color.White,
+                )
+            }
+        } else {
+            Image(
+                bitmap = avatar,
+                modifier = Modifier
+                    .fillMaxSize(),
+                contentDescription = null,
+            )
+        }
+    }
+}
+
+
+@Composable
+fun rememberAvatar(email: String): ImageBitmap? {
+    val url = "https://www.gravatar.com/avatar/${email.md5}?s=60&d=404"
+    return rememberNetworkImageOrNull(
+        url = url,
+        placeHolderImageRes = null,
+    )
+}

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

@@ -37,9 +37,9 @@ import app.extensions.*
 import app.git.GitManager
 import app.git.LogStatus
 import app.git.graph.GraphNode
-import app.images.rememberNetworkImage
 import app.theme.*
 import app.ui.SelectedItem
+import app.ui.components.AvatarImage
 import app.ui.components.ScrollableLazyColumn
 import app.ui.context_menu.branchContextMenuItems
 import app.ui.context_menu.tagContextMenuItems
@@ -592,12 +592,10 @@ fun CommitNode(
             .border(2.dp, color, shape = CircleShape)
             .clip(CircleShape)
     ) {
-        val url = "https://www.gravatar.com/avatar/${plotCommit.authorIdent.emailAddress.md5}?s=60"
-        Image(
-            bitmap = rememberNetworkImage(url),
-            modifier = Modifier
-                .fillMaxSize(),
-            contentDescription = null
+        AvatarImage(
+            modifier = Modifier.fillMaxSize(),
+            personIdent = plotCommit.authorIdent,
+            color = color,
         )
     }
 }