Fix calendar heat inset size on O+

app/src/main/java/app/insti/fragment/CalendarFragment.java

@@ -4,6 +4,7 @@ package app.insti.fragment;
 import android.animation.ArgbEvaluator;
 import android.graphics.drawable.GradientDrawable;
 import android.graphics.drawable.InsetDrawable;
+import android.os.Build;
 import android.os.Bundle;
 import android.support.annotation.NonNull;
 import android.support.design.widget.FloatingActionButton;
@@ -171,10 +172,19 @@ public class CalendarFragment extends BaseFragment {
 
         @Override
         public void decorate(DayViewFacade view) {
+            // Color background with alpha
             GradientDrawable gD = new GradientDrawable();
             gD.setColor((int) new ArgbEvaluator().evaluate(((float) alpha / 255.0f), white, color));
             gD.setShape(GradientDrawable.OVAL);
-            InsetDrawable iD = new InsetDrawable(gD, 15);
+
+            // Inset to show border on selected
+            InsetDrawable iD;
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                iD = new InsetDrawable(gD, 0.1f);
+            } else {
+                iD = new InsetDrawable(gD, 10);
+            }
+
             view.setBackgroundDrawable(iD);
         }
     }