forked from joejulian/gio
Elias Naur
4c220f4554
First, replace LayoutOptions with an explicit maximum width parameter. The single-field option struct doesn't carry its weight, and I don't think we'll see more global layout options in the future. Rather, I expect options to cover spans of text or be part of a Font. Second, replace the unit.Converter with an scaled text size. It's simpler and allow the Editor and similar widgets to easily detect whether their cached layouts are stale. Package text no longer depends on package unit, which is now dealt with at the widget-level only. Finally, remove the Size field from Font. It was a design mistake: a Font is assumed to cover all sizes, as evidenced by the FontRegistry disregarding Size when looking up fonts. Signed-off-by: Elias Naur <mail@eliasnaur.com>
80 lines
1.7 KiB
Go
80 lines
1.7 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/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 Label 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.RGBA
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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.Value
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shaper text.Shaper
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}
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func (t *Theme) H1(txt string) Label {
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return t.Label(t.TextSize.Scale(96.0/16.0), txt)
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}
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func (t *Theme) H2(txt string) Label {
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return t.Label(t.TextSize.Scale(60.0/16.0), txt)
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}
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func (t *Theme) H3(txt string) Label {
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return t.Label(t.TextSize.Scale(48.0/16.0), txt)
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}
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func (t *Theme) H4(txt string) Label {
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return t.Label(t.TextSize.Scale(34.0/16.0), txt)
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}
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func (t *Theme) H5(txt string) Label {
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return t.Label(t.TextSize.Scale(24.0/16.0), txt)
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}
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func (t *Theme) H6(txt string) Label {
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return t.Label(t.TextSize.Scale(20.0/16.0), txt)
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}
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func (t *Theme) Body1(txt string) Label {
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return t.Label(t.TextSize, txt)
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}
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func (t *Theme) Body2(txt string) Label {
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return t.Label(t.TextSize.Scale(14.0/16.0), txt)
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}
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func (t *Theme) Caption(txt string) Label {
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return t.Label(t.TextSize.Scale(12.0/16.0), txt)
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}
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func (t *Theme) Label(size unit.Value, txt string) Label {
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return Label{
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Text: txt,
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Color: t.Color.Text,
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TextSize: size,
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shaper: t.Shaper,
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}
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}
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func (l Label) Layout(gtx *layout.Context) {
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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}
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tl.Layout(gtx, l.shaper, l.Font, l.TextSize, l.Text)
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}
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