类型 ContextMenuOptions

type ContextMenuOptions struct {
	Layer     uint16
	Scope     ui.ID
	DismissID ui.ID
	// ID and Side are those of DropdownMenuOptions. A context menu appears and
	// disappears at once, as a native one does, so neither changes how it moves.
	ID   ui.ID
	Side OverlaySide
	// Viewport, with DismissID, makes the menu declare a hit over the whole
	// window behind its surface, so pressing anywhere outside it reports
	// DismissID (Escape reports it too). The menu is also kept inside it: shifted
	// back when it sticks out, and shortened, so that it scrolls, when it is taller
	// than the window. Leave it empty to dismiss only on Escape and handle outside
	// presses yourself.
	Viewport ui.Rect
	// Scroll is the scroll position of a menu whose items do not all fit its
	// bounds (see MenuScroll). Without one such a menu shows only the items at
	// its top.
	Scroll *MenuScroll
	// Submenu makes this the content of a submenu, which has a smaller minimum
	// width (128) than a context menu (144).
	Submenu bool
	// RowHeight is the height of an item row. Zero is the standard 32px; a menu
	// with many items can ask for a denser one (24, say). Group labels, separators
	// and everything else keep their size. An icon never grows past the row.
	RowHeight float32
}