{
/*
* limit page up/down to one width's worth of positions
*/
int rowSize = vpRanges.getViewportWidth();
int newX = newY > oldY ? oldX + rowSize : oldX - rowSize;
{
/*
* limit page up/down to one width's worth of positions
*/
int rowSize = vpRanges.getViewportWidth();
int newX = newY > oldY ? oldX + rowSize : oldX - rowSize;