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// 25 june 2014
package ui
type allocation struct {
x int
y int
width int
height int
this Control
neighbor Control
}
// for verification; see sysdata.go
type sysDataSizeFuncs interface {
beginResize() *sysSizeData
endResize(*sysSizeData)
translateAllocationCoords([]*allocation, int, int)
preferredSize(*sysSizeData) (int, int)
commitResize(*allocation, *sysSizeData)
getAuxResizeInfo(*sysSizeData)
}
func (s *sysData) resizeWindow(width, height int) {
d := s.beginResize()
allocations := s.allocate(0, 0, width, height, d)
s.translateAllocationCoords(allocations, width, height)
for _, c := range s.allocations {
c.this.commitResize(c, d)
}
s.endResize(d)
}
// non-layout controls: allocate() should just return a one-element slice; preferredSize(), commitResize(), and getAuxResizeInfo() should defer to their sysData equivalents
type controlSizing interface {
allocate(x int, y int, width int, height int, d *sysSizeData) []*allocation
preferredSize(d *sysSizeData) (width, height int)
commitResize(c *allocation, d *sysSizeData)
getAuxResizeInfo(d *sysSizeData)
}
// vertical stack: no concept of neighbor, but not too hard to add a vertical neighbor
// horizontal stack:
var current *allocation
// ...
as := s.controls[i].allocate(...)
if current != nil {
current.neighbor = as[0].self
}
current = as[0]
// append all of as
// grid:
// same as above, except current is set to nil on each new row
// adding a vertical neighbor would require storing an extra list
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