ZacharyZhang-NY
5c3c883b7d
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.
53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
package overlay
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import (
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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 PopoverOptions struct {
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// Width is the panel's in dots; zero fits the content.
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Width int
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}
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// notch is the pointer's height in dots.
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const notch = 4
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// Popover opens a panel below anchor, notched toward it.
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func Popover(c *ui.Context, text string, anchor *ui.Element, open *bool, o PopoverOptions, content func()) *ui.Element {
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k := pixel.K(c)
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w := pixel.Or("Popover Width", o.Width, 0)
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ab := anchor.Bounds()
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return ui.PopoverBase(c, anchor, open, func(panel *ui.Element) {
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if w > 0 {
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panel.Width(k.D(w))
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}
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panel.Label(text).Padding(k.D(notch+5), k.D(7)).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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// Flipped above its anchor, the notch points down.
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up := r.Y >= ab.Y
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top := notch
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if !up {
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top = 0
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}
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g.Frame(0, top, g.W, g.H-notch, pixel.Window, pixel.Face)
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x := max(notch+1, min(g.W-notch-2, int((ab.X+ab.W/2-r.X)/k.Dot())))
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for j := range notch {
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y := j
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if !up {
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y = g.H - 1 - j
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}
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g.HLine(x-j, y, 2*j+1, pixel.Face)
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g.Dot(x-j, y, pixel.Edge)
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g.Dot(x+j, y, pixel.Edge)
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}
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edge := notch
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if !up {
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edge = g.H - notch - 1
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}
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g.HLine(x-notch+1, edge, 2*notch-1, pixel.Face)
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}).Children(content)
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})
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}
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