75 lines
1.9 KiB
Go
75 lines
1.9 KiB
Go
package layout
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import (
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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type AppFrameOptions struct {
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// SidebarWidth is zero for 96 dots.
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SidebarWidth int
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// FoldBelow stacks the sidebar over main; zero means 320.
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FoldBelow int
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}
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// AppFrame arranges header, sidebar, main and footer; nil ones vanish.
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func AppFrame(c *ui.Context, o AppFrameOptions, header, sidebar, main, footer func()) *ui.Element {
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k := pixel.K(c)
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sw := pixel.Or("AppFrame SidebarWidth", o.SidebarWidth, 96)
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fold := pixel.Or("AppFrame FoldBelow", o.FoldBelow, 320)
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if main == nil {
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panic("layout: AppFrame needs main")
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}
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root := ui.Column(c).Fill()
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w, check := pixel.WrapWidth(c, root)
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folded := w > 0 && w < fold
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strip := func(fn func(), below bool) {
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ui.Box(c).FillWidth().Padding(k.D(4), k.D(6)).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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g.Rect(0, 0, g.W, g.H, pixel.Face)
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if below {
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g.HLine(0, g.H-1, g.W, pixel.Edge)
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} else {
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g.HLine(0, 0, g.W, pixel.Edge)
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}
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}).Children(fn)
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}
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return root.Draw(func(p *ui.Painter, r ui.Rect) {
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check(r)
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g := k.Canvas(p, r)
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g.Rect(0, 0, g.W, g.H, pixel.Back)
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}).Children(func() {
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if header != nil {
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strip(header, true)
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}
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var body *ui.Element
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if folded {
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body = ui.Column(c)
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} else {
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body = ui.Row(c)
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}
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body.Grow(1).AlignItems(ui.Stretch).Children(func() {
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if sidebar != nil {
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side := ui.Column(c).Padding(k.D(4)).Gap(k.D(2)).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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g.Rect(0, 0, g.W, g.H, pixel.Well)
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if folded {
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g.HLine(0, g.H-1, g.W, pixel.Edge)
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} else {
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g.VLine(g.W-1, 0, g.H, pixel.Edge)
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}
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})
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if !folded {
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side.Width(k.D(sw))
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}
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side.Children(sidebar)
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}
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ui.Column(c).Grow(1).Padding(k.D(6)).Gap(k.D(4)).Clip().Children(main)
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})
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if footer != nil {
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strip(footer, false)
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}
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})
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}
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