Merge "Removing unnecessary object creation and double loop during...

     */

    public static float getDescendantCoordRelativeToAncestor(

            View descendant, View ancestor, int[] coord, boolean includeRootScroll) {

        ArrayList<View> ancestorChain = new ArrayList<View>();

        float[] pt = {coord[0], coord[1]};

        float scale = 1.0f;

        View v = descendant;

        while(v != ancestor && v != null) {

            ancestorChain.add(v);

            v = (View) v.getParent();

        }

        float scale = 1.0f;

        int count = ancestorChain.size();

        for (int i = 0; i < count; i++) {

            View v0 = ancestorChain.get(i);

            // For TextViews, scroll has a meaning which relates to the text position

            // which is very strange... ignore the scroll.

            if (v0 != descendant || includeRootScroll) {

                pt[0] -= v0.getScrollX();

                pt[1] -= v0.getScrollY();

            if (v != descendant || includeRootScroll) {

                pt[0] -= v.getScrollX();

                pt[1] -= v.getScrollY();

            }

            v0.getMatrix().mapPoints(pt);

            pt[0] += v0.getLeft();

            pt[1] += v0.getTop();

            scale *= v0.getScaleX();

            v.getMatrix().mapPoints(pt);

            pt[0] += v.getLeft();

            pt[1] += v.getTop();

            scale *= v.getScaleX();

            v = (View) v.getParent();

        }

        coord[0] = (int) Math.round(pt[0]);

        coord[1] = (int) Math.round(pt[1]);

        coord[0] = Math.round(pt[0]);

        coord[1] = Math.round(pt[1]);

        return scale;

    }