placeholder channel screen

app/src/main/java/com/geeksville/mesh/ui/Channel.kt

@@ -0,0 +1,53 @@
+package com.geeksville.mesh.ui
+
+import androidx.compose.Composable
+import androidx.ui.core.Text
+import androidx.ui.foundation.DrawImage
+import androidx.ui.layout.*
+import androidx.ui.material.MaterialTheme
+import androidx.ui.res.imageResource
+import androidx.ui.tooling.preview.Preview
+import androidx.ui.unit.dp
+import com.geeksville.mesh.R
+
+/// The Compose IDE preview doesn't like the protobufs
+data class Channel(val name: String, val num: Int)
+
+@Composable
+fun ChannelContent(channel: Channel = Channel("Default", 7)) {
+    val typography = MaterialTheme.typography()
+
+    Column(modifier = LayoutSize.Fill + LayoutPadding(16.dp)) {
+        Text(
+            text = "Channel: ${channel.name}",
+            modifier = LayoutGravity.Center,
+            style = typography.h4
+        )
+
+        Row {
+            val image = imageResource(id = R.drawable.qrcode)
+            Container(modifier = LayoutGravity.Center + LayoutSize.Min(320.dp, 320.dp)) {
+                DrawImage(image = image)
+            }
+        }
+
+        Text(
+            text = "Number: ${channel.num}",
+            modifier = LayoutGravity.Center
+        )
+        Text(
+            text = "Mode: Long range (but slow)",
+            modifier = LayoutGravity.Center
+        )
+    }
+}
+
+
+@Preview
+@Composable
+fun previewChannel() {
+    // another bug? It seems modaldrawerlayout not yet supported in preview
+    MaterialTheme(colors = palette) {
+        ChannelContent()
+    }
+}