//----------------------------------------------------------------------------//
void ScrolledItemListBase::ensureItemIsVisibleHorz(const ItemEntry& item)
{
const Rect render_area = getItemRenderArea();
Scrollbar* const h = getHorzScrollbar();
const float currPos = h->getScrollPosition();
const float left =
item.getXPosition().asAbsolute(this->getPixelSize().d_width) - currPos;
const float right = left + item.getItemPixelSize().d_width;
// if left is left of the view area, or if item too big, scroll item to left
if ((left < render_area.d_left) || ((right - left) > render_area.getWidth()))
h->setScrollPosition(currPos + left);
// if right is right of the view area, scroll item to right of list
else if (right >= render_area.d_right)
h->setScrollPosition(currPos + right - render_area.getWidth());
}
//----------------------------------------------------------------------------//
void ScrolledItemListBase::ensureItemIsVisibleVert(const ItemEntry& item)
{
const Rect render_area = getItemRenderArea();
Scrollbar* const v = getVertScrollbar();
const float currPos = v->getScrollPosition();
const float top =
item.getYPosition().asAbsolute(this->getPixelSize().d_height) - currPos;
const float bottom = top + item.getItemPixelSize().d_height;
// if top is above the view area, or if item is too big, scroll item to top
if ((top < render_area.d_top) || ((bottom - top) > render_area.getHeight()))
v->setScrollPosition(currPos + top);
// if bottom is below the view area, scroll item to bottom of list
else if (bottom >= render_area.d_bottom)
v->setScrollPosition(currPos + bottom - render_area.getHeight());
}
