mirror of
https://git.sr.ht/~eliasnaur/gio
synced 2026-07-01 15:45:38 +00:00
Chris Waldon
e98c8955bb
This commit rebuilds the editor and label types on the common foundation provided by textView. This enables labels to have optional state that makes them selectable, and allows the two widgets to share the code for managing cursor positions, displaying selections, and soforth. Labels now have an additional Layout function which can be invoked if they have a Selectable. It accepts a layout.Widget used to paint their contents. Stateless labels should still use the old Layout method. Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
114 lines
2.8 KiB
Go
114 lines
2.8 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/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 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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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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paint.ColorOp{Color: l.Color}.Add(gtx.Ops)
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tl := widget.Label{Alignment: l.Alignment, MaxLines: l.MaxLines, Selectable: l.State}
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if l.State == nil {
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return tl.Layout(gtx, l.shaper, l.Font, l.TextSize, l.Text)
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}
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return tl.LayoutSelectable(gtx, l.shaper, l.Font, l.TextSize, l.Text, func(gtx layout.Context) layout.Dimensions {
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paint.ColorOp{Color: l.SelectionColor}.Add(gtx.Ops)
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l.State.PaintSelection(gtx)
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paint.ColorOp{Color: l.Color}.Add(gtx.Ops)
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l.State.PaintText(gtx)
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return layout.Dimensions{}
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})
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}
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