WIP components (as built)

remote_cursor_test.go

@@ -0,0 +1,87 @@
+package mujica
+
+import (
+	"image/color"
+	"testing"
+
+	"github.com/egoist/mygo/ui"
+
+	"mujicaui/theme"
+)
+
+// remoteMono maps offsets onto 40-column, 8×20 DIP cells.
+func remoteMono() RemoteCursorOptions {
+	at := func(o int) (float32, float32) { return float32(o%40) * 8, float32(o/40) * 20 }
+	return RemoteCursorOptions{
+		Caret: func(o int) ui.Rect { x, y := at(o); return ui.Rect{X: x, Y: y, W: 2, H: 20} },
+		Selection: func(from, to int) []ui.Rect {
+			var out []ui.Rect
+			for o := from; o < to; o++ {
+				x, y := at(o)
+				out = append(out, ui.Rect{X: x, Y: y, W: 8, H: 20})
+			}
+			return out
+		},
+	}
+}
+
+func remoteTester(carets []RemoteCaret, button *int) *ui.Tester {
+	return ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{Mode: Light})
+		ui.Box(c).Size(320, 120).Children(func() {
+			if Button(c, "Underneath", ButtonOptions{}).Size(320, 120).Clicked() {
+				*button++
+			}
+			RemoteCursor(c, carets, remoteMono())
+		})
+	}, 340, 140)
+}
+
+func TestRemoteCursorDrawCaretAndSelection(t *testing.T) {
+	carets := []RemoteCaret{{ID: "ada", Name: "Ada", Offset: 45, Anchor: 42}}
+	tt := remoteTester(carets, new(int))
+	col := remoteColor(theme.Light(), "ada")
+	img := tt.Image()
+	// Offset 45 places the caret at x=40, y=20..40.
+	if got := img.RGBAAt(40, 35); got != (color.RGBA{col.R, col.G, col.B, 255}) {
+		t.Fatalf("caret pixel %v, want %v", got, col)
+	}
+	if got := img.RGBAAt(28, 35); got == (color.RGBA{col.R, col.G, col.B, 255}) || got == img.RGBAAt(100, 35) {
+		t.Fatalf("selection pixel %v not tinted", got)
+	}
+	if !tt.HasText("Also editing: Ada") {
+		t.Fatalf("texts %q", tt.Texts())
+	}
+}
+
+func TestRemoteCursorPassInput(t *testing.T) {
+	n := 0
+	tt := remoteTester([]RemoteCaret{{ID: "b", Name: "Blaise", Offset: 3, Anchor: 3}}, &n)
+	tt.ClickAt(30, 10)
+	if n != 1 {
+		t.Fatal("the overlay took the click")
+	}
+}
+
+func TestRemoteCursorInvalid(t *testing.T) {
+	defer func() {
+		if recover() == nil {
+			t.Fatal("missing ID did not panic")
+		}
+	}()
+	remoteTester([]RemoteCaret{{Name: "x"}}, new(int))
+}
+
+func TestRemoteCursorSnapshot(t *testing.T) {
+	snapshot(t, "remote_cursor", 360, 120, func(c *ui.Context) {
+		k := Tokens(c)
+		ui.Box(c).Margin(12).Size(320, 80).Background(k.Surface).Children(func() {
+			ui.Column(c).Children(func() {
+				for _, l := range []string{"The seal of the court is kept", "by the chancellor, who answers"} {
+					ui.Text(c, l).Font(theme.MonoFont).FontSize(FontSize(c, 13)).Height(20)
+				}
+			})
+			RemoteCursor(c, []RemoteCaret{{ID: "ada", Name: "Ada", Offset: 48, Anchor: 43}, {ID: "blaise", Name: "Blaise", Offset: 8, Anchor: 8}}, remoteMono())
+		})
+	})
+}