Method maxFirst

gui/itemscroller.go:509–550

maxFirst returns the maximum position of the first visible item

()

// maxFirst returns the maximum position of the first visible item
func (s *ItemScroller) maxFirst() int {

	// Vertical scroller
	if s.vert {
		var height float32
		pos := len(s.items) - 1
		if pos < 0 {
			return 0
		}
		for {
			item := s.items[pos]
			height += item.GetPanel().Height()
			if height > s.Height() {
				break
			}
			pos--
			if pos < 0 {
				break
			}
		}
		return pos + 1
	}

	// Horizontal scroller
	var width float32
	pos := len(s.items) - 1
	if pos < 0 {
		return 0
	}
	for {
		item := s.items[pos]
		width += item.GetPanel().Width()
		if width > s.Width() {
			break
		}
		pos--
		if pos < 0 {
			break
		}
	}
	return pos + 1
}

// setVScrollBar sets the visibility state of the vertical scrollbar
func (s *ItemScroller) setVScrollBar(state bool) {