Files
8bitMyGoUI/overlay/spotlight.go
T
ZacharyZhang-NY 5c3c883b7d Add overlay components 176-195; pixel Harbor and Kit.Cue
Dialogs on DialogBase with focusable panels that harbor parked focus,
popovers on PopoverBase, bubbles, drawers, sheets, a lightbox, an RPG
dialogue box, notifications, a pause menu and a dithered title card.
Kit.Cue moves from feedback to pixel.
2026-10-11 23:11:46 -04:00

37 lines
1.1 KiB
Go

package overlay
import (
"github.com/egoist/mygo/ui"
"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
)
type SpotlightOptions struct{}
// Spotlight dithers all but target and captions it.
func Spotlight(c *ui.Context, target *ui.Element, caption string, o SpotlightOptions) *ui.Element {
k := pixel.K(c)
b := target.Bounds()
deep, _ := dark(k)
var veil *ui.Element
ui.Overlay(c, func() {
veil = ui.Box(c).Absolute().Left(0).Top(0).Right(0).Bottom(0).PassThrough().Role(ui.RoleStatus).Label(caption)
veil.Draw(func(p *ui.Painter, r ui.Rect) {
g := k.Canvas(p, r)
// The hole is the target, two dots wider all round.
x, y := int(b.X/k.Dot())-2, int(b.Y/k.Dot())-2
w, h := int(b.W/k.Dot())+4, int(b.H/k.Dot())+4
g.Veil(0, 0, g.W, y, deep, 12)
g.Veil(0, y+h, g.W, g.H-y-h, deep, 12)
g.Veil(0, y, x, h, deep, 12)
g.Veil(x+w, y, g.W-x-w, h, deep, 12)
g.FocusMark(x+2, y+2, w-4, h-4)
})
})
w := pixel.Measure(caption) + 16
bubble(c, ui.Rect{X: b.X, Y: b.Y - k.D(2), W: b.W, H: b.H + k.D(4)}, func() {
pixel.Text(c, caption, pixel.TextOptions{})
}, w)
return veil
}