forked from joejulian/gio
Elias Naur
fb7337f794
It's one less type (Align) and shorter: Before: layout.Align(layout.Center).Layout(...) After layout.Center.Layout(...) It is also safer: since `layout.Align(...)` was a casting operation, the Go compiler would not complain about an incompatible constant. For example, the widget/material package contained a wrong cast: layout.Align(layout.Start) which should have been layout.Align(layout.W) After this change, attempting `layout.Start.Layout(...)` result in a compile error. Signed-off-by: Elias Naur <mail@eliasnaur.com>
66 lines
1.5 KiB
Go
66 lines
1.5 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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"gioui.org/io/pointer"
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"gioui.org/layout"
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"gioui.org/op/paint"
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"gioui.org/text"
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"gioui.org/unit"
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"gioui.org/widget"
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)
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type checkable struct {
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Label string
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Color color.RGBA
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Font text.Font
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IconColor color.RGBA
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Size unit.Value
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shaper text.Shaper
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checkedStateIcon *Icon
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uncheckedStateIcon *Icon
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}
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func (c *checkable) layout(gtx *layout.Context, checked bool) {
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var icon *Icon
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if checked {
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icon = c.checkedStateIcon
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} else {
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icon = c.uncheckedStateIcon
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}
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hmin := gtx.Constraints.Width.Min
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vmin := gtx.Constraints.Height.Min
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layout.Flex{Alignment: layout.Middle}.Layout(gtx,
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layout.Rigid(func() {
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layout.Center.Layout(gtx, func() {
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layout.UniformInset(unit.Dp(2)).Layout(gtx, func() {
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size := gtx.Px(c.Size)
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icon.Color = c.IconColor
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icon.Layout(gtx, unit.Px(float32(size)))
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gtx.Dimensions = layout.Dimensions{
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Size: image.Point{X: size, Y: size},
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}
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})
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})
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}),
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layout.Rigid(func() {
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gtx.Constraints.Width.Min = hmin
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gtx.Constraints.Height.Min = vmin
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layout.W.Layout(gtx, func() {
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layout.UniformInset(unit.Dp(2)).Layout(gtx, func() {
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paint.ColorOp{Color: c.Color}.Add(gtx.Ops)
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widget.Label{}.Layout(gtx, c.shaper, c.Font, c.Label)
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})
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})
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}),
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)
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pointer.Rect(image.Rectangle{Max: gtx.Dimensions.Size}).Add(gtx.Ops)
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}
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