99 lines
2.3 KiB
Go
99 lines
2.3 KiB
Go
package mujica
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import (
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"fmt"
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"log/slog"
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"github.com/egoist/mygo/ui"
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"mujicaui/icons"
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"mujicaui/theme"
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)
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// IconTone is an icon's semantic color. The zero value takes the text color.
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type IconTone int
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const (
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IconInherit IconTone = iota
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IconMuted
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IconAccent
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IconSuccess
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IconWarning
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IconDanger
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IconInfo
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)
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// IconOptions configure an Icon.
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type IconOptions struct {
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// Size is the icon's width and height in DIPs; zero means 16.
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Size float32
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Tone IconTone
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// Label names a meaningful icon for assistive technology; empty hides it.
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Label string
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}
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type iconMissingKey struct{}
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// Icon shows the named icon of the icons package. A missing name shows a
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// dashed fallback box in the Danger color and logs a warning.
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func Icon(c *ui.Context, name string, opts IconOptions) *ui.Element {
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if name == "" {
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panic("mujica: Icon needs a name")
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}
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size := opts.Size
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if size < 0 {
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panic("mujica: Icon Size must not be negative")
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}
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if size == 0 {
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size = 16
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}
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k := Tokens(c)
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svg, ok := icons.Get(name)
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if !ok {
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return iconMissing(c, name, size, k)
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}
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e := ui.Icon(c, svg).Size(size, size).Shrink(0)
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if col, set := iconColor(k, opts.Tone); set {
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e.TextColor(col)
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}
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if opts.Label != "" {
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e.Label(opts.Label)
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}
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return e
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}
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func iconMissing(c *ui.Context, name string, size float32, k theme.Tokens) *ui.Element {
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text := fmt.Sprintf(msg(c, "icon.missing"), name)
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e := ui.Box(c).Size(size, size).Shrink(0).Role(ui.RoleImage).Label(text).Tooltip(text)
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logged := ui.Local(e, iconMissingKey{}, func() string { return "" })
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if *logged != name {
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*logged = name
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slog.Warn("mujica: icon missing", "name", name)
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}
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return e.Draw(func(p *ui.Painter, r ui.Rect) {
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in := ui.Rect{X: r.X + 1, Y: r.Y + 1, W: r.W - 2, H: r.H - 2}
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p.StrokeDashed(in, k.Danger, theme.ControlRadius, 1)
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p.Line(in.X+3, in.Y+3, in.X+in.W-3, in.Y+in.H-3, 1, k.Danger)
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})
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}
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func iconColor(k theme.Tokens, t IconTone) (ui.Color, bool) {
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switch t {
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case IconInherit:
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return ui.Color{}, false
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case IconMuted:
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return k.TextMuted, true
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case IconAccent:
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return k.AccentText, true
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case IconSuccess:
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return k.Success, true
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case IconWarning:
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return k.Warning, true
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case IconDanger:
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return k.Danger, true
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case IconInfo:
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return k.Info, true
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}
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panic(fmt.Sprintf("mujica: unknown IconTone %d", t))
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}
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