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widget/material: handle elliptical icon buttons

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This commit changes the ink-drawing code so that IconButtons that
are not perfectly circular will still ink fully. Previously, an
elliptical icon would only animate a circular sub-region.

Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
This commit is contained in:
Chris Waldon
2020-07-17 15:36:50 -04:00
committed by Elias Naur
parent 40141e29f5
commit ae07c5f470
1 changed files with 4 additions and 4 deletions
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widget/material/button.go
+4 -4
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@@ -150,11 +150,11 @@ func (b ButtonLayoutStyle) Layout(gtx layout.Context, w layout.Widget) layout.Di
func (b IconButtonStyle) Layout(gtx layout.Context) layout.Dimensions {
return layout.Stack{Alignment: layout.Center}.Layout(gtx,
layout.Expanded(func(gtx layout.Context) layout.Dimensions {
size := gtx.Constraints.Min.X
sizef := float32(size)
rr := sizef * .5
sizex, sizey := gtx.Constraints.Min.X, gtx.Constraints.Min.Y
sizexf, sizeyf := float32(sizex), float32(sizey)
rr := (sizexf + sizeyf) * .25
clip.RRect{
Rect: f32.Rectangle{Max: f32.Point{X: sizef, Y: sizef}},
Rect: f32.Rectangle{Max: f32.Point{X: sizexf, Y: sizeyf}},
NE: rr, NW: rr, SE: rr, SW: rr,
}.Add(gtx.Ops)
background := b.Background