91 lines
1.8 KiB
Go
91 lines
1.8 KiB
Go
package layouts
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import (
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"fyne.io/fyne/v2"
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"fyne.io/fyne/v2/layout"
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"fyne.io/fyne/v2/theme"
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)
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var _ fyne.Layout = (*VboxCustomPadding)(nil)
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type HboxCustomPadding struct {
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ExtraPad float32
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DisableThemePad bool
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}
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func (*HboxCustomPadding) isSpacer(obj fyne.CanvasObject) bool {
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if !obj.Visible() {
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return false
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}
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if spacer, ok := obj.(layout.SpacerObject); ok {
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return spacer.ExpandHorizontal()
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}
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return false
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}
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func (h *HboxCustomPadding) MinSize(objects []fyne.CanvasObject) fyne.Size {
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minSize := fyne.NewSize(0, 0)
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addPadding := false
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padding := h.themePad() + h.ExtraPad
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for _, child := range objects {
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if !child.Visible() {
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continue
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}
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if h.isSpacer(child) {
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continue
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}
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minSize.Height = fyne.Max(child.MinSize().Height, minSize.Height)
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minSize.Width += child.MinSize().Width
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if addPadding {
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minSize.Width += padding
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}
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addPadding = true
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}
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return minSize
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}
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func (h *HboxCustomPadding) Layout(objects []fyne.CanvasObject, size fyne.Size) {
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spacers := 0
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total := float32(0)
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for _, child := range objects {
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if !child.Visible() {
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continue
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}
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if h.isSpacer(child) {
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spacers++
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continue
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}
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total += child.MinSize().Width
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}
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x, y := float32(0), float32(0)
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padding := h.themePad() + h.ExtraPad
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extra := size.Width - total - (padding * float32(len(objects)-spacers-1))
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extraCell := float32(0)
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if spacers > 0 {
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extraCell = extra / float32(spacers)
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}
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for _, child := range objects {
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if !child.Visible() {
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continue
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}
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if h.isSpacer(child) {
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x += extraCell
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}
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width := child.MinSize().Width
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child.Move(fyne.NewPos(x, y))
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child.Resize(fyne.NewSize(width, size.Height))
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x += padding + width
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}
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}
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func (h *HboxCustomPadding) themePad() float32 {
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if h.DisableThemePad {
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return 0
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}
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return theme.Padding()
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}
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