showing real channel data works

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

@@ -0,0 +1,89 @@
+package com.geeksville.mesh.ui
+
+import android.graphics.Bitmap
+import androidx.compose.Composable
+import androidx.ui.core.DensityAmbient
+import androidx.ui.core.DrawModifier
+import androidx.ui.core.Modifier
+import androidx.ui.core.toModifier
+import androidx.ui.foundation.Box
+import androidx.ui.graphics.*
+import androidx.ui.graphics.colorspace.ColorSpace
+import androidx.ui.graphics.colorspace.ColorSpaces
+import androidx.ui.graphics.painter.ImagePainter
+import androidx.ui.unit.Density
+import androidx.ui.unit.PxSize
+import androidx.ui.unit.toRect
+
+/// Stolen from the Compose SimpleImage, replace with their real Image component someday
+// TODO(mount, malkov) : remove when RepaintBoundary is a modifier: b/149982905
+// This is class and not val because if b/149985596
+private object ClipModifier : DrawModifier {
+    override fun draw(density: Density, drawContent: () -> Unit, canvas: Canvas, size: PxSize) {
+        canvas.save()
+        canvas.clipRect(size.toRect())
+        drawContent()
+        canvas.restore()
+    }
+}
+
+
+/// Stolen from the Compose SimpleImage, replace with their real Image component someday
+@Composable
+fun ScaledImage(
+    image: Image,
+    modifier: Modifier = Modifier.None,
+    tint: Color? = null
+) {
+    with(DensityAmbient.current) {
+        val imageModifier = ImagePainter(image).toModifier(
+            scaleFit = ScaleFit.FillMaxDimension,
+            colorFilter = tint?.let { ColorFilter(it, BlendMode.srcIn) }
+        )
+        Box(modifier + ClipModifier + imageModifier)
+    }
+}
+
+
+/// Borrowed from Compose
+class AndroidImage(val bitmap: Bitmap) : Image {
+
+    /**
+     * @see Image.width
+     */
+    override val width: Int
+        get() = bitmap.width
+
+    /**
+     * @see Image.height
+     */
+    override val height: Int
+        get() = bitmap.height
+
+    override val config: ImageConfig get() = ImageConfig.Argb8888
+
+    /**
+     * @see Image.colorSpace
+     */
+    override val colorSpace: ColorSpace
+        get() = ColorSpaces.Srgb
+
+    /**
+     * @see Image.hasAlpha
+     */
+    override val hasAlpha: Boolean
+        get() = bitmap.hasAlpha()
+
+    /**
+     * @see Image.nativeImage
+     */
+    override val nativeImage: NativeImage
+        get() = bitmap
+
+    /**
+     * @see
+     */
+    override fun prepareToDraw() {
+        bitmap.prepareToDraw()
+    }
+}