feat(tracker): create initial tracker skeleton using Gio

go4k/tracker/run.go

@@ -0,0 +1,35 @@
+package tracker
+
+import (
+	"gioui.org/app"
+	"gioui.org/io/key"
+	"gioui.org/io/system"
+	"gioui.org/layout"
+	"gioui.org/op"
+	"os"
+)
+
+func (t *Tracker) Run(w *app.Window) error {
+	var ops op.Ops
+	for {
+		select {
+		case e := <-w.Events():
+			switch e := e.(type) {
+			case system.DestroyEvent:
+				return e.Err
+			case key.Event:
+				if t.KeyEvent(e) {
+					w.Invalidate()
+				}
+			case system.FrameEvent:
+				gtx := layout.NewContext(&ops, e)
+				if t.QuitButton.Clicked() {
+					os.Exit(0)
+				}
+				t.Layout(gtx)
+				e.Frame(gtx.Ops)
+			}
+		}
+	}
+
+}