42 lines
963 B
Go
42 lines
963 B
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 PanelOptions struct {
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Style pixel.FrameStyle
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// Fill is the body slot; zero means Face.
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Fill pixel.Slot
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// Padding is inside the border; zero means 4.
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Padding int
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}
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// Panel frames children in a style.
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func Panel(c *ui.Context, o PanelOptions, children func()) *ui.Element {
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k := pixel.K(c)
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fill := o.Fill
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if fill == pixel.Ink {
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fill = pixel.Face
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}
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pad := border(o.Style) + orDef("Panel Padding", o.Padding, 4)
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return ui.Column(c).Padding(k.D(pad)).Draw(func(p *ui.Painter, r ui.Rect) {
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box(k.Canvas(p, r), o.Style, fill)
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}).Children(children)
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}
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// border is the dots a frame style takes per side.
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func border(s pixel.FrameStyle) int {
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switch s {
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case pixel.Flat, pixel.Notched:
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return 1
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case pixel.Raised, pixel.Sunken:
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return 2
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case pixel.Double, pixel.Window:
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return 3
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}
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panic("layout: unknown frame style")
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}
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