Method updateParentRelSizes

core/layout.go:710–744

updateParentRelSizes updates any parent-relative Min, Max size values based on current actual parent sizes.

()

// updateParentRelSizes updates any parent-relative Min, Max size values
// based on current actual parent sizes.
func (wb *WidgetBase) updateParentRelSizes() bool {
	pwb := wb.parentWidget()
	if pwb == nil {
		return false
	}
	sz := &wb.Geom.Size
	s := &wb.Styles
	psz := pwb.Geom.Size.Alloc.Content.Sub(pwb.Geom.Size.InnerSpace)
	got := false
	for d := math32.X; d <= math32.Y; d++ {
		if s.Min.Dim(d).Unit == units.UnitPw {
			got = true
			sz.Min.SetDim(d, psz.X*0.01*s.Min.Dim(d).Value)
		}
		if s.Min.Dim(d).Unit == units.UnitPh {
			got = true
			sz.Min.SetDim(d, psz.Y*0.01*s.Min.Dim(d).Value)
		}
		if s.Max.Dim(d).Unit == units.UnitPw {
			got = true
			sz.Max.SetDim(d, psz.X*0.01*s.Max.Dim(d).Value)
		}
		if s.Max.Dim(d).Unit == units.UnitPh {
			got = true
			sz.Max.SetDim(d, psz.Y*0.01*s.Max.Dim(d).Value)
		}
	}
	if got {
		sz.fitSizeMax(&sz.Actual.Total, sz.Min)
		sz.fitSizeMax(&sz.Alloc.Total, sz.Min)
		sz.setContentFromTotal(&sz.Actual)
		sz.setContentFromTotal(&sz.Alloc)
	}
	return got
}

// sizeUpParts adjusts the Content size to hold the Parts layout if present
func (wb *WidgetBase) sizeUpParts() {