android: restyle chat composer to telegram-like container

android/app/src/main/java/ru/daemonlord/messenger/ui/chat/ChatScreen.kt

@@ -333,36 +333,51 @@ fun ChatScreen(
             }
         }
 
-        Row(
+        Surface(
             modifier = Modifier
                 .fillMaxWidth()
                 .navigationBarsPadding()
                 .imePadding()
-                .padding(horizontal = 12.dp, vertical = 8.dp),
-            verticalAlignment = Alignment.CenterVertically,
-            horizontalArrangement = Arrangement.spacedBy(8.dp),
+                .padding(horizontal = 10.dp, vertical = 8.dp),
+            color = MaterialTheme.colorScheme.surfaceVariant.copy(alpha = 0.92f),
+            shape = RoundedCornerShape(22.dp),
         ) {
-            Button(
-                onClick = onPickMedia,
-                enabled = state.canSendMessages && !state.isUploadingMedia,
+            Row(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(horizontal = 8.dp, vertical = 6.dp),
+                verticalAlignment = Alignment.CenterVertically,
+                horizontalArrangement = Arrangement.spacedBy(6.dp),
             ) {
-                Text(if (state.isUploadingMedia) "..." else "Attach")
-            }
-            OutlinedTextField(
-                value = state.inputText,
-                onValueChange = onInputChanged,
-                modifier = Modifier.weight(1f),
-                label = { Text("Message") },
-                maxLines = 4,
-            )
-            Button(
-                onClick = onSendClick,
-                enabled = state.canSendMessages &&
+                Button(
+                    onClick = { /* emoji placeholder */ },
+                    enabled = state.canSendMessages,
+                ) {
+                    Text("\uD83D\uDE03")
+                }
+                OutlinedTextField(
+                    value = state.inputText,
+                    onValueChange = onInputChanged,
+                    modifier = Modifier.weight(1f),
+                    placeholder = { Text("Message") },
+                    maxLines = 4,
+                )
+                Button(
+                    onClick = onPickMedia,
+                    enabled = state.canSendMessages && !state.isUploadingMedia,
+                ) {
+                    Text(if (state.isUploadingMedia) "..." else "\uD83D\uDCCE")
+                }
+                val canSend = state.canSendMessages &&
                     !state.isSending &&
                     !state.isUploadingMedia &&
-                    state.inputText.isNotBlank(),
-            ) {
-                Text(if (state.isSending) "..." else "Send")
+                    state.inputText.isNotBlank()
+                Button(
+                    onClick = { if (canSend) onSendClick() },
+                    enabled = state.canSendMessages && !state.isUploadingMedia,
+                ) {
+                    Text(if (canSend) "\u27A4" else "\uD83C\uDFA4")
+                }
             }
         }