mirror of
https://git.sr.ht/~eliasnaur/gio
synced 2026-07-02 07:57:29 +00:00
Chris Waldon
7e8c10927b
This commit moves the min/max width of shaped text and the text's Locale into
text.Parameters. They were previously passed as separate function parameters to
the shaper, but this made little sense and added visual noise. This is a breaking
change, but only if you previously invoked the shaping API directly.
Callers of text.(*Shaper).LayoutString should change:
shaper.LayoutString(params, minWidth, maxWidth, locale, "string")
to
params.MinWidth=minWidth
params.MaxWidth=maxWidth
params.Locale=locale
shaper.LayoutString(params, "string")
Callers of text.(*Shaper).Layout should do likewise.
Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
131 lines
3.3 KiB
Go
131 lines
3.3 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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l.State.Alignment = l.Alignment
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l.State.MaxLines = l.MaxLines
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l.State.Truncator = l.Truncator
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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{
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Alignment: l.Alignment,
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MaxLines: l.MaxLines,
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Truncator: l.Truncator,
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}
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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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