Add input components 066-085; gallery chrome on real components; deploy warms the edge

input/checkboxgroup.go

@@ -0,0 +1,72 @@
+package input
+
+import (
+	"fmt"
+	"log/slog"
+
+	"github.com/egoist/mygo/ui"
+
+	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
+)
+
+type CheckboxGroupOptions struct {
+	Disabled bool
+}
+
+type CheckboxGroupResult struct {
+	Element *ui.Element
+	Changed bool
+}
+
+// count is how many boxes are checked.
+func count(checked []bool) int {
+	n := 0
+	for _, v := range checked {
+		if v {
+			n++
+		}
+	}
+	return n
+}
+
+// CheckboxGroup puts a parent box over children; partial shows mixed.
+func CheckboxGroup(c *ui.Context, text string, items []string, checked []bool, o CheckboxGroupOptions) CheckboxGroupResult {
+	if len(items) != len(checked) {
+		panic(fmt.Sprintf("input: CheckboxGroup has %d items and %d states", len(items), len(checked)))
+	}
+	k := pixel.K(c)
+	all := count(checked) == len(checked) && len(checked) > 0
+	res := CheckboxGroupResult{}
+	res.Element = ui.Column(c).Gap(k.D(2)).Role(ui.RoleGroup).Children(func() {
+		shell, base, st := pixel.Shell(c, func() *ui.Element {
+			return ui.CheckboxBase(c, &all).Label(text).Disabled(o.Disabled)
+		})
+		shell.Size(k.D(12+pixel.Measure(text)), k.D(pixel.LineHeight)).Draw(func(p *ui.Painter, r ui.Rect) {
+			var mark *pixel.Sprite
+			switch n := count(checked); {
+			case n == len(checked) && n > 0:
+				mark = check
+			case n > 0:
+				mark = dash
+			}
+			box(k.Canvas(p, r), text, mark, st)
+		})
+		if base.Changed() {
+			for i := range checked {
+				checked[i] = all
+			}
+			res.Changed = true
+		}
+		ui.Column(c).Gap(k.D(2)).Padding(0, 0, 0, k.D(12)).Children(func() {
+			for i, it := range items {
+				if Checkbox(c, it, &checked[i], CheckboxOptions{Disabled: o.Disabled}).Changed {
+					res.Changed = true
+				}
+			}
+		})
+	})
+	if res.Changed {
+		slog.Debug("8bit: checkbox group", "label", text, "checked", checked)
+	}
+	return res
+}