plectrum

commit e4601e8261cabb822a1355398b56331c9e7a6650
parent 10a4018486a17050a6212ad2ad96c8388eef3d18
Author: gstraube <gstraube@mailbox.org>
Date:   Thu,  6 Jul 2017 19:03:43 +0200

Set background color depending on pitch deviation

Diffstat:
M
app/src/main/java/com/github/cythara/TunerView.java
 | 
18
++++++++++++++++++

1 file changed, 18 insertions(+), 0 deletions(-)
diff --git a/app/src/main/java/com/github/cythara/TunerView.java b/app/src/main/java/com/github/cythara/TunerView.java
@@ -10,7 +10,10 @@ import android.view.View;
 
 public class TunerView extends View {
 
+    private static final double MAX_ALLOWED_DEVIATION = 3D;
+
     private Paint paint = new Paint();
+    private Paint background = new Paint();
     private PitchDifference pitchDifference;
 
     public TunerView(Context context) {
@@ -32,10 +35,25 @@ public class TunerView extends View {
         float y = canvas.getHeight() / 2F;
 
         if (pitchDifference != null) {
+            int color = Color.RED;
+            if (pitchDifference.deviation <= MAX_ALLOWED_DEVIATION) {
+                color = Color.GREEN;
+            }
+            background.setColor(color);
+
+            setBackground(canvas);
+
             canvas.drawText(pitchDifference.closest.name(), x, y, paint);
         }
     }
 
+    private void setBackground(Canvas canvas) {
+        background.setStyle(Paint.Style.FILL);
+        background.setAlpha(70);
+
+        canvas.drawRect(0, 0, canvas.getWidth(), canvas.getHeight(), background);
+    }
+
     public void setPitchDifference(PitchDifference pitchDifference) {
         this.pitchDifference = pitchDifference;
     }