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type sysSizeData struct {
// windows
baseX int
baseY int
// possibly also the HDWP
// gtk, mac os x: nothing
}
func (s *sysData) beginResize() *sysSizeData {
// windows: get baseX/baseY for window
// gtk, mac: return nothing
}
func (s *sysData) endResize(d *sysSizeData) {
// redraw
}
type allocation struct {
x int
y int
width int
height int
this Control
neighbor Control
}
func (s *sysData) translateAllocationCoords(allocations []*allocation, winwidth, winheight int) {
// windows, gtk: nothing
// mac
for _, allocation := range allocations {
// winheight - y because (0,0) is the bottom-left corner of the window and not the top-left corner
// (winheight - y) - height because (x, y) is the bottom-left corner of the control and not the top-left
allocation.y = (winheight - allocation.y) - allocation.height
}
}
func (s *sysData) resizeWindow(width, height int) {
d := s.startResize()
allocations := s.resize(0, 0, width, height, d)
s.translateAllocationCoords(allocations, width, height)
for _, c := range s.allocations {
c.this.doResize(c, d)
}
s.finishResize(d)
}
main widget sizing function
get preferred size of all subwidgets
windows: uses dialog base units
produce map of which controls are next to which controls
properly space controls
windows: uses dialog base units
return list of size allocations back to window sizer
each doResize on a control should just defer to sysData.doResize()
each widget adjustment
mac: neighboring control baselines are aligned for labels
gtk: vertical alignment of text changed to top if neighboring control is multi-line
TODO - should it be center-aligned vertically or not
windows: none
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