forked from joejulian/gio
Pierre Curto
50 lines
1.0 KiB
Go
50 lines
1.0 KiB
Go
// SPDX-License-Identifier: Unlicense OR MIT
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package material
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import (
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"image"
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"image/color"
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"math"
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"gioui.org/f32"
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"gioui.org/layout"
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"gioui.org/op"
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"gioui.org/op/paint"
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"gioui.org/unit"
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)
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type ProgressCircleStyle struct {
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Color color.NRGBA
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Progress float32
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}
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func ProgressCircle(th *Theme, progress float32) ProgressCircleStyle {
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return ProgressCircleStyle{
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Color: th.Palette.ContrastBg,
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Progress: progress,
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}
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}
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func (p ProgressCircleStyle) Layout(gtx layout.Context) layout.Dimensions {
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diam := gtx.Constraints.Min.X
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if minY := gtx.Constraints.Min.Y; minY > diam {
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diam = minY
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}
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if diam == 0 {
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diam = gtx.Px(unit.Dp(24))
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}
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sz := gtx.Constraints.Constrain(image.Pt(diam, diam))
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radius := float32(sz.X) * .5
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defer op.Offset(f32.Pt(radius, radius)).Push(gtx.Ops).Pop()
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defer clipLoader(gtx.Ops, -math.Pi/2, -math.Pi/2+math.Pi*2*p.Progress, radius).Push(gtx.Ops).Pop()
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paint.ColorOp{
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Color: p.Color,
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}.Add(gtx.Ops)
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paint.PaintOp{}.Add(gtx.Ops)
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return layout.Dimensions{
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Size: sz,
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}
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}
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