// +build !windows,!darwin,!plan9 // 23 february 2014 package ui import ( // ... ) // GTK+ 3 makes this easy: controls can tell us what their preferred size is! // ...actually, it tells us two things: the "minimum size" and the "natural size". // The "minimum size" is the smallest size we /can/ display /anything/. The "natural size" is the smallest size we would /prefer/ to display. // The difference? Minimum size takes into account things like truncation with ellipses: the minimum size of a label can allot just the ellipses! // So we use the natural size instead, right? // We could, but there's one snag: "Handle with care. Note that the natural height of a height-for-width widget will generally be a smaller size than the minimum height, since the required height for the natural width is generally smaller than the required height for the minimum width." // This will have to be taken care of manually, so TODO; we'll just use the natural size for now func (s *sysData) preferredSize() (width int, height int) { _, _, width, height = gtk_widget_get_preferred_size(s.widget) return width, height }