Adding option for strip offset

Author: Iain Connor

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

@@ -11,7 +11,7 @@
 
 	<com.tippingcanoe.dewey.Dewey
 		android:id="@+id/dewey"
-		android:layout_width="wrap_content"
+		android:layout_width="match_parent"
 		android:layout_height="wrap_content"
 		android:background="@color/material_deep_teal_200"
 		custom:stripColor="@color/accent_material_light"

library/src/main/java/com/tippingcanoe/dewey/Dewey.java

@@ -31,6 +31,7 @@ public class Dewey extends RecyclerView {
 	float minCloakPercentage = 50f;
 	Interpolator cloakCurveInterpolator = new AccelerateInterpolator();
 
+	int stripOffset = 0;
 	int stripHeight = 10;
 	int stripColor = Color.RED;
 	Interpolator stripAnimationInterpolator = new AccelerateDecelerateInterpolator();
@@ -64,6 +65,7 @@ protected void setup ( Context context, @Nullable AttributeSet attrs ) {
 			try {
 				cloakColor = typedArray.getColor(R.styleable.Dewey_cloakColor, cloakColor);
 				minCloakPercentage = typedArray.getFloat(R.styleable.Dewey_minCloakPercentage, minCloakPercentage);
+				stripOffset = typedArray.getDimensionPixelSize(R.styleable.Dewey_stripOffset, stripOffset);
 				stripHeight = typedArray.getDimensionPixelSize(R.styleable.Dewey_stripHeight, stripHeight);
 				stripColor = typedArray.getColor(R.styleable.Dewey_stripColor, stripColor);
 				animationDurationMs = typedArray.getInteger(R.styleable.Dewey_animationDurationMs, animationDurationMs);
@@ -225,6 +227,14 @@ public void setUniformCells(boolean uniformCells) {
 		((DeweyLayoutManager) getLayoutManager()).setUniformCells(uniformCells);
 	}
 
+	public int getStripOffset() {
+		return stripOffset;
+	}
+
+	public void setStripOffset(@DimenRes int stripOffset) {
+		this.stripOffset = getResources().getDimensionPixelSize(stripOffset);
+	}
+
 	public static interface OnFocusedPositionChangedListener {
 		void onFocusedPositionChanged ( int previousFocusedPosition, int newFocusedPosition );
 	}

library/src/main/java/com/tippingcanoe/dewey/DeweyDecorator.java

@@ -407,7 +407,7 @@ protected void drawStrip ( RecyclerView parent, Canvas c, int firstVisiblePos, i
 			}
 
 			if (currentFocusedChild != null) {
-				dY = parent.getMeasuredHeight() - dewey.getStripHeight();
+				dY = parent.getMeasuredHeight() - dewey.getStripHeight() - dewey.getStripOffset();
 				dWidth = currentFocusedChild.getMeasuredWidth();
 
 				if (isAnimating) {

library/src/main/res/values/attrs.xml

@@ -5,6 +5,7 @@
 		<attr name="minCloakPercentage" format="float" />
 		<attr name="stripHeight" format="dimension" />
 		<attr name="stripColor" format="color" />
+		<attr name="stripOffset" format="dimension" />
 		<attr name="animationDurationMs" format="integer" />
 		<attr name="uniformCells" format="boolean" />
 	</declare-styleable>