Tweaking height of keyboard view

With these changes, there's a max height of 300dp, and a bit more room
in a phone layout (some of the hidden status message widgets were taking
vertical space).

android/res/layout/piano2.xml

@@ -61,6 +61,7 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         />
+    <!-- 
       <TextView
           android:id="@+id/status"
           android:visibility="invisible"
@@ -80,6 +81,7 @@
           android:layout_height="40dp"
           android:textIsSelectable="true"
           />
+          -->
     </LinearLayout>
   </TableRow>
   <TableRow>

android/src/com/levien/synthesizer/android/widgets/keyboard/KeyboardView.java

@@ -32,8 +32,8 @@ import com.levien.synthesizer.core.midi.MidiListener;
 public class KeyboardView extends View {
   public KeyboardView(Context context, AttributeSet attrs) {
     super(context, attrs);
-    nKeys_ = 36;   // TODO: make configurable
+    nKeys_ = 25;   // TODO: make configurable
-    firstKey_ = 36;
+    firstKey_ = 48;
     noteStatus_ = new byte[128];
     noteForFinger_ = new int[FINGERS];
     for (int i = 0; i < FINGERS; i++) {
@@ -136,6 +136,9 @@ public class KeyboardView extends View {
     int width = 0;
     int height = 0;
 
+    float density = getResources().getDisplayMetrics().density;
+    int maxHeight = (int) (300.0f * density + 0.5f);
+
     switch (widthMode) {
       case MeasureSpec.EXACTLY:
         width = widthSize;
@@ -153,7 +156,7 @@ public class KeyboardView extends View {
         height = heightSize;
         break;
       case MeasureSpec.AT_MOST:
-        height = heightSize;
+        height = Math.min(maxHeight, heightSize);
         break;
       case MeasureSpec.UNSPECIFIED:
         height = 10;