59 lines
1.3 KiB
Go
59 lines
1.3 KiB
Go
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package layouts
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import "fyne.io/fyne/v2"
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// Implements: fyne.Layout
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type VarGridCols struct {
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cols int
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cfg []int
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}
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func NewVariableGridWithColumns(cols int, cfg []int) *VarGridCols {
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return &VarGridCols{
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cols: cols,
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cfg: cfg,
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}
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}
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// Implements: fyne.Layout : 1
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func (v *VarGridCols) MinSize(objects []fyne.CanvasObject) fyne.Size {
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w, h := float32(0), float32(0)
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i := 0
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for _, o := range objects {
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if !o.Visible() {
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continue
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}
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childSize := o.MinSize()
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// NOTE: can be out-of-bounds error if not checked at creation
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takenCols := v.cfg[i]
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if takenCols > 1 {
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w += childSize.Width * float32(takenCols)
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} else {
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w += childSize.Width
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}
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if h+childSize.Height > h {
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h += childSize.Height
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}
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i++
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}
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return fyne.NewSize(w, h)
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}
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// Implements: fyne.Layout : 2
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func (v *VarGridCols) Layout(objects []fyne.CanvasObject, contSize fyne.Size) {
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// pos := fyne.NewPos(0, contSize.Height-v.MinSize(objects).Height)
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pos := fyne.NewPos(0, 0)
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cellWidthSingular := float64(contSize.Width) / float64(v.cols)
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cellHeight := contSize.Height
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for i, o := range objects {
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numCols := v.cfg[i]
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w := cellWidthSingular * float64(numCols)
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o.Move(pos)
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o.Resize(fyne.NewSize(float32(w), cellHeight))
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pos = pos.Add(fyne.NewPos(float32(w), 0))
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}
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}
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