89 lines
2.0 KiB
Go
89 lines
2.0 KiB
Go
package layouts
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import "image"
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import "git.tebibyte.media/tomo/tomo"
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type Row struct { }
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func (Row) MinimumSize (hints tomo.LayoutHints, boxes []tomo.Box) image.Point {
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dot := image.Point { }
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for _, box := range boxes {
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minimum := box.MinimumSize()
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dot.X += minimum.X
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if dot.Y < minimum.Y {
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dot.Y = minimum.Y
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}
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}
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dot.X += hints.Gap.X * (len(boxes) - 1)
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return dot
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}
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func (Row) Arrange (hints tomo.LayoutHints, boxes []tomo.Box) {
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// TODO respect alignment value
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dot := hints.Bounds.Min
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for index, box := range boxes {
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if index > 0 { dot.X += hints.Gap.X }
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minimum := box.MinimumSize()
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box.SetBounds(image.Rectangle {
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Min: dot,
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Max: dot.Add(image.Pt(minimum.X, hints.Bounds.Dy())),
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})
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dot.X += minimum.X
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}
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width := dot.X - hints.Bounds.Min.X
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offset := 0
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switch hints.AlignX {
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case tomo.AlignMiddle:
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offset = (hints.Bounds.Dx() - width) / 2
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case tomo.AlignEnd:
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offset = hints.Bounds.Dx() - width
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}
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for _, box := range boxes {
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box.SetBounds(box.Bounds().Add(image.Pt(offset, 0)))
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}
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}
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type Column struct { }
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func (Column) MinimumSize (hints tomo.LayoutHints, boxes []tomo.Box) image.Point {
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dot := image.Point { }
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for _, box := range boxes {
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minimum := box.MinimumSize()
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dot.Y += minimum.Y
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if dot.X < minimum.X {
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dot.X = minimum.X
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}
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}
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dot.Y += hints.Gap.Y * (len(boxes) - 1)
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return dot
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}
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func (Column) Arrange (hints tomo.LayoutHints, boxes []tomo.Box) {
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// TODO respect alignment value
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dot := hints.Bounds.Min
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for index, box := range boxes {
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if index > 0 { dot.Y += hints.Gap.Y }
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minimum := box.MinimumSize()
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box.SetBounds(image.Rectangle {
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Min: dot,
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Max: dot.Add(image.Pt(hints.Bounds.Dx(), minimum.Y)),
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})
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dot.Y += minimum.Y
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}
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height := dot.Y - hints.Bounds.Min.Y
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offset := 0
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switch hints.AlignY {
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case tomo.AlignMiddle:
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offset = (hints.Bounds.Dy() - height) / 2
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case tomo.AlignEnd:
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offset = hints.Bounds.Dy() - height
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}
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for _, box := range boxes {
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box.SetBounds(box.Bounds().Add(image.Pt(0, offset)))
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}
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}
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