Don't elide label of non-string keys

Several non-string keys can have a large label that shouldn't be elided,
for example ctrl, meta, send.

Also, change the cutoff to 3 characters as labels are easily colliding.

srcs/juloo.keyboard2/Keyboard2View.java

@@ -408,7 +408,11 @@ private void drawSubLabel(Canvas canvas, KeyValue kv, float x, float y,
     else
       x += (a == Paint.Align.LEFT) ? subPadding : keyW - subPadding;
     String label = kv.getString();
-    canvas.drawText(label, 0, Math.min(4, label.length()), x, y, p);
+    int label_len = label.length();
+    // Limit the label of string keys to 3 characters
+    if (label_len > 3 && kv.getKind() == KeyValue.Kind.String)
+      label_len = 3;
+    canvas.drawText(label, 0, label_len, x, y, p);
   }
 
   private void drawIndication(Canvas canvas, String indication, float x,