49 lines
1.1 KiB
Go
49 lines
1.1 KiB
Go
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// 25 june 2014
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package ui
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type allocation struct {
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x int
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y int
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width int
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height int
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this Control
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neighbor Control
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}
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type sizingbase struct {
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xmargin int
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ymargin int
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xpadding int
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ypadding int
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}
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// this ensures that all *windows across all platforms contain the necessary functions
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// if this fails to compile, we have a problem
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var windowSizeEnsure interface {
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beginResize() *sizing
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endResize(*sizing)
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translateAllocationCoords([]*allocation, int, int)
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} = &window{}
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type controlSizing interface {
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allocate(x int, y int, width int, height int, d *sizing) []*allocation
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preferredSize(*sizing) (int, int)
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commitResize(*allocation, *sizing)
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getAuxResizeInfo(*sizing)
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}
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func (w *window) doresize(width, height int) {
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if w.child == nil { // no children; nothing to do
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return
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}
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d := w.beginResize()
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allocations := w.child.allocate(0, 0, width, height, d)
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w.translateAllocationCoords(allocations, width, height)
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// move in reverse so as to approximate right->left order so neighbors make sense
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for i := len(allocations) - 1; i >= 0; i-- {
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allocations[i].this.commitResize(allocations[i], d)
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}
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w.endResize(d)
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}
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