forked from joejulian/gio
Elias Naur
2451750782
Instead of, say,
var th *material.Theme
var btn *widget.Clickable
material.Button(th, "Click me").Layout(gtx, btn)
move the widget state objects to the constructor:
material.Button(th, btn, "Click me").Layout(gtx)
The advatage is that several widgets can now be used without
wrapping them in function literals. For example,
layout.Inset{}.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
material.Button(th, "Click me").Layout(gtx, btn)
})
collapses to just
layout.Inset{}.Layout(gtx, material.Button(th, btn, "Click me").Layout)
Signed-off-by: Elias Naur <mail@eliasnaur.com>
68 lines
1.5 KiB
Go
68 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/color"
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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/text"
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"gioui.org/unit"
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"gioui.org/widget"
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)
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type EditorStyle struct {
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Font text.Font
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TextSize unit.Value
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// Color is the text color.
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Color color.RGBA
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// Hint contains the text displayed when the editor is empty.
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Hint string
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// HintColor is the color of hint text.
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HintColor color.RGBA
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Editor *widget.Editor
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shaper text.Shaper
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}
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func Editor(th *Theme, editor *widget.Editor, hint string) EditorStyle {
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return EditorStyle{
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Editor: editor,
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TextSize: th.TextSize,
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Color: th.Color.Text,
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shaper: th.Shaper,
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Hint: hint,
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HintColor: th.Color.Hint,
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}
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}
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func (e EditorStyle) Layout(gtx layout.Context) layout.Dimensions {
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var stack op.StackOp
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stack.Push(gtx.Ops)
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var macro op.MacroOp
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macro.Record(gtx.Ops)
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paint.ColorOp{Color: e.HintColor}.Add(gtx.Ops)
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tl := widget.Label{Alignment: e.Editor.Alignment}
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dims := tl.Layout(gtx, e.shaper, e.Font, e.TextSize, e.Hint)
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macro.Stop()
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if w := dims.Size.X; gtx.Constraints.Min.X < w {
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gtx.Constraints.Min.X = w
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}
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if h := dims.Size.Y; gtx.Constraints.Min.Y < h {
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gtx.Constraints.Min.Y = h
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}
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dims = e.Editor.Layout(gtx, e.shaper, e.Font, e.TextSize)
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if e.Editor.Len() > 0 {
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paint.ColorOp{Color: e.Color}.Add(gtx.Ops)
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e.Editor.PaintText(gtx)
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} else {
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macro.Add()
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}
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paint.ColorOp{Color: e.Color}.Add(gtx.Ops)
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e.Editor.PaintCaret(gtx)
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stack.Pop()
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return dims
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}
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