Method prefSize

core/render.go:263–276

prefSize computes the preferred size of the scene based on current contents. initSz is the initial size -- e.g., size of screen. Used for auto-sizing windows.

(initSz image.Point)

// initSz is the initial size -- e.g., size of screen.
// Used for auto-sizing windows.
func (sc *Scene) prefSize(initSz image.Point) image.Point {
	sc.updating = true // prevent rendering
	defer func() { sc.updating = false }()

	sc.prefSizing = true
	sc.updateScene()
	sc.applyStyleScene()
	sc.layoutScene()
	sz := &sc.Geom.Size
	psz := sz.Actual.Total
	sc.prefSizing = false
	sc.showIter = 0
	return psz.ToPointFloor()
}

//////////////////////////////////////////////////////////////////
//		Widget local rendering