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

input/fader.go

@@ -0,0 +1,39 @@
+package input
+
+import (
+	"github.com/egoist/mygo/ui"
+
+	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
+)
+
+type FaderOptions struct {
+	Min, Max float64
+	// Height is the travel in dots; zero means 64.
+	Height   int
+	Disabled bool
+}
+
+type FaderResult = SliderResult
+
+// Fader is a vertical slider with a cap and ticks.
+func Fader(c *ui.Context, text string, value *float64, o FaderOptions) FaderResult {
+	k := pixel.K(c)
+	lo, hi := bounds(o.Min, o.Max)
+	h := orDef("Fader Height", o.Height, 64)
+	shell, st, changed := slide(c, value, rail{lo: lo, hi: hi, vertical: true, label: text, disabled: o.Disabled})
+	shell.Size(k.D(16), k.D(h)).Draw(func(p *ui.Painter, r ui.Rect) {
+		g := k.Canvas(p, r)
+		for t := 0; t <= 4; t++ {
+			y := 3 + t*(g.H-7)/4
+			g.HLine(0, y, 3, pixel.Faint)
+			g.HLine(13, y, 3, pixel.Faint)
+		}
+		g.Frame(6, 0, 4, g.H, pixel.Sunken, pixel.Well)
+		y := g.H - 7 - knobAt(*value, lo, hi, g.H-7)
+		g.Rect(7, y+3, 2, g.H-y-4, pixel.Accent)
+		g.Frame(2, y, 12, 7, pixel.Raised, pixel.Face)
+		g.HLine(4, y+3, 8, pixel.Edge)
+		finish(g, st)
+	})
+	return report(shell, changed, "fader", text, *value)
+}