feat: add portable Windows zone manager

internal/layout/layout_test.go

@@ -0,0 +1,21 @@
+package layout
+
+import (
+	"github.com/stevec/fancywin/internal/config"
+	"testing"
+)
+
+func TestResolvePercentageAndGap(t *testing.T) {
+	got := Resolve(Rect{0, 0, 1920, 1040}, config.Zone{X: 50, Y: 0, Width: 50, Height: 100}, 8)
+	want := (Rect{968, 8, 1912, 1032})
+	if got != want {
+		t.Fatalf("got %+v, want %+v", got, want)
+	}
+}
+
+func TestZoneAt(t *testing.T) {
+	z := []config.Zone{{X: 0, Y: 0, Width: 50, Height: 100}, {X: 50, Y: 0, Width: 50, Height: 100}}
+	if got := ZoneAt(Rect{0, 0, 100, 100}, z, 0, Point{75, 20}); got != 1 {
+		t.Fatalf("got %d", got)
+	}
+}