93 lines
2.1 KiB
Go
93 lines
2.1 KiB
Go
package input
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import (
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"log/slog"
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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type ButtonOptions struct {
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Variant Variant
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Size Size
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Icon *pixel.Sprite
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// Loading shows a spinner and takes no clicks.
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Loading bool
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Disabled bool
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// Label names it for assistive technology; zero uses text.
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Label string
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}
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type ButtonResult struct {
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Element *ui.Element
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Clicked bool
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}
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// Button is a beveled button whose face sinks when pressed.
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func Button(c *ui.Context, text string, o ButtonOptions) ButtonResult {
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k := pixel.K(c)
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h, pad, top, sc := o.Size.metrics()
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name := label(o.Label, text)
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shell, base, st := pixel.Shell(c, func() *ui.Element {
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return ui.ButtonBase(c).Label(name).Disabled(o.Disabled || o.Loading)
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})
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w := pixel.Measure(text) * sc
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lead := 0
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if o.Icon != nil || o.Loading {
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lead = 3
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if o.Icon != nil {
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lead = o.Icon.W
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}
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if text != "" {
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lead += 3
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}
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}
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if text == "" && o.Icon != nil {
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w, pad = 0, (h-o.Icon.W)/2
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}
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shell.Size(k.D(w+lead+2*pad), k.D(h)).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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ink, dy := face(g, o.Variant, st, false)
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x := pad
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switch {
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case o.Loading:
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cy := (h-3)/2 + dy
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for i, d := range [4][2]int{{1, 0}, {2, 1}, {1, 2}, {0, 1}} {
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if g.Step(8)%4 != i {
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g.Dot(x+d[0], cy+d[1], ink)
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}
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}
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x += lead
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case o.Icon != nil:
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g.Sprite(x, (h-o.Icon.H)/2+dy, o.Icon, 0, ink, 1)
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x += lead
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}
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if text != "" {
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g.Text(x, top+dy, text, ink, sc)
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}
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finish(g, st)
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})
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res := ButtonResult{Element: shell, Clicked: base.Clicked()}
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if res.Clicked {
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slog.Debug("8bit: button", "label", name)
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}
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return res
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}
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type IconButtonOptions struct {
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Variant Variant
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Size Size
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Disabled bool
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}
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type IconButtonResult = ButtonResult
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// IconButton is a square button named for assistive technology.
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func IconButton(c *ui.Context, icon *pixel.Sprite, name string, o IconButtonOptions) IconButtonResult {
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if name == "" {
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panic("input: IconButton needs a name")
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}
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return Button(c, "", ButtonOptions{Variant: o.Variant, Size: o.Size, Icon: icon, Disabled: o.Disabled, Label: name})
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}
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