59 lines
1.5 KiB
Go
59 lines
1.5 KiB
Go
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package main
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import (
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"fyne.io/fyne/v2"
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)
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type aspectRatioLayout struct {
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aspectRatio float32
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rows int
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cols int
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}
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func newAspectRatioLayout(aspectRatio float32, rows, cols int) fyne.Layout {
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return &aspectRatioLayout{aspectRatio: aspectRatio, rows: rows, cols: cols}
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}
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func (a *aspectRatioLayout) Layout(objects []fyne.CanvasObject, size fyne.Size) {
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// Calculate cell size based on width
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cellWidthBasedOnWidth := size.Width / float32(a.cols)
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cellHeightFromWidth := cellWidthBasedOnWidth / a.aspectRatio
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// Calculate cell size based on height
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cellHeightBasedOnHeight := size.Height / float32(a.rows)
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cellWidthFromHeight := cellHeightBasedOnHeight * a.aspectRatio
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var cellWidth, cellHeight float32
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// Choose the smaller of the two to fit in the container
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if cellWidthBasedOnWidth*float32(a.cols) <= size.Width && cellHeightFromWidth*float32(a.rows) <= size.Height {
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cellWidth = cellWidthBasedOnWidth
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cellHeight = cellHeightFromWidth
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} else {
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cellWidth = cellWidthFromHeight
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cellHeight = cellHeightBasedOnHeight
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}
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if cellHeight*float32(a.rows) > size.Height {
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cellHeight = size.Height / float32(a.rows)
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cellWidth = cellHeight * a.aspectRatio
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}
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x, y := float32(0), float32(0)
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for i, o := range objects {
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o.Resize(fyne.NewSize(cellWidth, cellHeight))
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o.Move(fyne.NewPos(x, y))
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if (i+1)%a.cols == 0 {
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x = 0
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y += cellHeight
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} else {
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x += cellWidth
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}
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}
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}
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func (a *aspectRatioLayout) MinSize(objects []fyne.CanvasObject) fyne.Size {
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return fyne.NewSize(10, 10)
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}
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