forked from joejulian/gio
Egon Elbre
fecfbbb050
These can be nicely used together with clip.Stroke. Signed-off-by: Egon Elbre <egonelbre@gmail.com>
42 lines
804 B
Go
42 lines
804 B
Go
// SPDX-License-Identifier: Unlicense OR MIT
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package widget
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import (
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"image/color"
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"gioui.org/f32"
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"gioui.org/layout"
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"gioui.org/op/clip"
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"gioui.org/op/paint"
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"gioui.org/unit"
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)
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// Border lays out a widget and draws a border inside it.
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type Border struct {
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Color color.NRGBA
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CornerRadius unit.Value
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Width unit.Value
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}
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func (b Border) Layout(gtx layout.Context, w layout.Widget) layout.Dimensions {
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dims := w(gtx)
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sz := dims.Size
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rr := float32(gtx.Px(b.CornerRadius))
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width := float32(gtx.Px(b.Width))
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r := f32.Rectangle{Max: layout.FPt(sz)}
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r = r.Add(f32.Point{X: width * 0.5, Y: width * 0.5})
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paint.FillShape(gtx.Ops,
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b.Color,
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clip.Stroke{
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Path: clip.UniformRRect(r, rr).Path(gtx.Ops),
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Style: clip.StrokeStyle{Width: width},
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}.Op(),
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)
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return dims
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}
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