mirror of
https://git.sr.ht/~eliasnaur/gio
synced 2026-07-01 07:35:40 +00:00
Chris Waldon
9d0a53fc9f
This commit separates the types for interactive and non-interactive text within package widget. widget.Selectable is used for all interactive text. widget.Label is used for all non-interactive text. There is no longer a field on widget.Label to provide it with a Selectable. If you want selectable text and are not relying upon the material pacakge API, you need to create widget.Selectables instead of widget.Labels. The material package's LabelStyle API is unchanged. Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
124 lines
3.2 KiB
Go
124 lines
3.2 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/internal/f32color"
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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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// LabelStyle configures the presentation of text. If the State field is set, the
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// label will be laid out as interactive (able to be selected and copied). Otherwise,
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// the label will be non-interactive.
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type LabelStyle struct {
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// Face defines the text style.
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Font text.Font
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// Color is the text color.
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Color color.NRGBA
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// SelectionColor is the color of the background for selected text.
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SelectionColor color.NRGBA
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// Alignment specify the text alignment.
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Alignment text.Alignment
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// MaxLines limits the number of lines. Zero means no limit.
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MaxLines int
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// Truncator is the text that will be shown at the end of the final
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// line if MaxLines is exceeded. Defaults to "…" if empty.
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Truncator string
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Text string
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TextSize unit.Sp
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shaper *text.Shaper
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State *widget.Selectable
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}
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func H1(th *Theme, txt string) LabelStyle {
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label := Label(th, th.TextSize*96.0/16.0, txt)
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label.Font.Weight = text.Light
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return label
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}
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func H2(th *Theme, txt string) LabelStyle {
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label := Label(th, th.TextSize*60.0/16.0, txt)
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label.Font.Weight = text.Light
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return label
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}
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func H3(th *Theme, txt string) LabelStyle {
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return Label(th, th.TextSize*48.0/16.0, txt)
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}
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func H4(th *Theme, txt string) LabelStyle {
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return Label(th, th.TextSize*34.0/16.0, txt)
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}
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func H5(th *Theme, txt string) LabelStyle {
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return Label(th, th.TextSize*24.0/16.0, txt)
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}
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func H6(th *Theme, txt string) LabelStyle {
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label := Label(th, th.TextSize*20.0/16.0, txt)
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label.Font.Weight = text.Medium
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return label
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}
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func Subtitle1(th *Theme, txt string) LabelStyle {
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return Label(th, th.TextSize*16.0/16.0, txt)
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}
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func Subtitle2(th *Theme, txt string) LabelStyle {
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label := Label(th, th.TextSize*14.0/16.0, txt)
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label.Font.Weight = text.Medium
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return label
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}
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func Body1(th *Theme, txt string) LabelStyle {
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return Label(th, th.TextSize, txt)
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}
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func Body2(th *Theme, txt string) LabelStyle {
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return Label(th, th.TextSize*14.0/16.0, txt)
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}
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func Caption(th *Theme, txt string) LabelStyle {
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return Label(th, th.TextSize*12.0/16.0, txt)
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}
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func Overline(th *Theme, txt string) LabelStyle {
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return Label(th, th.TextSize*10.0/16.0, txt)
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}
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func Label(th *Theme, size unit.Sp, txt string) LabelStyle {
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return LabelStyle{
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Text: txt,
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Color: th.Palette.Fg,
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SelectionColor: f32color.MulAlpha(th.Palette.ContrastBg, 0x60),
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TextSize: size,
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shaper: th.Shaper,
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}
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}
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func (l LabelStyle) Layout(gtx layout.Context) layout.Dimensions {
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textColorMacro := op.Record(gtx.Ops)
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paint.ColorOp{Color: l.Color}.Add(gtx.Ops)
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textColor := textColorMacro.Stop()
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selectColorMacro := op.Record(gtx.Ops)
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paint.ColorOp{Color: l.SelectionColor}.Add(gtx.Ops)
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selectColor := selectColorMacro.Stop()
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if l.State != nil {
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if l.State.Text() != l.Text {
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l.State.SetText(l.Text)
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}
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return l.State.Layout(gtx, l.shaper, l.Font, l.TextSize, textColor, selectColor)
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}
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tl := widget.Label{Alignment: l.Alignment, MaxLines: l.MaxLines}
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return tl.Layout(gtx, l.shaper, l.Font, l.TextSize, l.Text, textColor)
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}
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