//====== private static methods private static void DrawRectangle(TextCanvas canvas, Rectangle rect, bool isFrame) { if (rect.Size.HasNoArea) { return; } var backColor = isFrame ? Color16.White : Color16.Black; var cell = new TextCell(' ', Color16.Black, backColor); canvas.HLine(rect.TopLeft, rect.Size.Width, cell); canvas.HLine(rect.BottomLeft, rect.Size.Width, cell); canvas.VLine(rect.TopLeft, rect.Size.Height, cell); canvas.VLine(rect.TopRight, rect.Size.Height, cell); }