Update Overview Layout for Arrow icons

Add a directionToIcon function in BGReading
Move arrow icons to core

app/src/main/java/info/nightscout/androidaps/plugins/general/overview/OverviewFragment.kt

@@ -179,7 +179,6 @@ class OverviewFragment : DaggerFragment(), View.OnClickListener, OnLongClickList
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
-        if (smallWidth) overview_arrow?.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 35f)
         overview_pumpstatus?.setBackgroundColor(resourceHelper.gc(R.color.colorInitializingBorder))
 
         overview_notifications?.setHasFixedSize(false)
@@ -567,8 +566,8 @@ class OverviewFragment : DaggerFragment(), View.OnClickListener, OnLongClickList
 
             overview_bg?.text = lastBG.valueToUnitsToString(units)
             overview_bg?.setTextColor(color)
-            overview_arrow?.text = lastBG.directionToSymbol(databaseHelper)
+            overview_arrow?.setImageResource(lastBG.directionToIcon(databaseHelper))
-            overview_arrow?.setTextColor(color)
+            overview_arrow?.setColorFilter(color)
 
             val glucoseStatus = GlucoseStatus(injector).glucoseStatusData
             if (glucoseStatus != null) {

app/src/main/res/layout/overview_info_layout.xml

@@ -17,21 +17,18 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
-    <TextView
+
+    <ImageView
         android:id="@+id/overview_arrow"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginTop="5dp"
+        android:layout_gravity="center_vertical"
-        android:paddingStart="-2dp"
-        android:paddingEnd="0dp"
-        android:text="→"
-        android:textSize="42sp"
-        android:textStyle="bold"
         app:layout_constraintEnd_toStartOf="@+id/overview_deltas_llayout"
         app:layout_constraintHorizontal_bias="0.0"
         app:layout_constraintStart_toEndOf="@+id/overview_bg"
-        app:layout_constraintTop_toTopOf="@+id/overview_bg" />
+        app:layout_constraintTop_toTopOf="@+id/overview_bg"
-
+        android:paddingTop="18dp"
+        android:src="@drawable/ic_flat" />
 
     <LinearLayout
         android:id="@+id/overview_deltas_llayout"

core/src/main/java/info/nightscout/androidaps/db/BgReading.java

@@ -113,6 +113,32 @@ public class BgReading implements DataPointWithLabelInterface {
         return symbol;
     }
 
+
+    public int directionToIcon(DatabaseHelperInterface databaseHelper) {
+        int symbol = 0;
+        if (direction == null)
+            direction = calculateDirection(databaseHelper);
+
+        if (direction.compareTo("DoubleDown") == 0) {
+            symbol = R.drawable.ic_doubledown;
+        } else if (direction.compareTo("SingleDown") == 0) {
+            symbol = R.drawable.ic_singledown;
+        } else if (direction.compareTo("FortyFiveDown") == 0) {
+            symbol = R.drawable.ic_fortyfivedown;;
+        } else if (direction.compareTo("Flat") == 0) {
+            symbol = R.drawable.ic_flat;;
+        } else if (direction.compareTo("FortyFiveUp") == 0) {
+            symbol = R.drawable.ic_fortyfiveup;
+        } else if (direction.compareTo("SingleUp") == 0) {
+            symbol = R.drawable.ic_singleup;
+        } else if (direction.compareTo("DoubleUp") == 0) {
+            symbol = R.drawable.ic_doubleup;
+        } else if (isSlopeNameInvalid(direction)) {
+            symbol = R.drawable.ic_invalid;
+        }
+        return symbol;
+    }
+
     private static boolean isSlopeNameInvalid(String direction) {
         return direction.compareTo("NOT_COMPUTABLE") == 0 ||
                 direction.compareTo("NOT COMPUTABLE") == 0 ||