feat(tui): add Unicode text service and document layout

1 files changed, 46 insertions, 0 deletions

diff --git a/src/tui/paint.hh b/src/tui/paint.hh
new file mode 100644
index 0000000..549718d
--- /dev/null
+++ b/src/tui/paint.hh
@@ -0,0 +1,46 @@
+/*
+ * Ricochet - A minimalist CLI web browser for fast, distraction-free navigation.
+ * Copyright (C) 2026  Richard Qin
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "ricochet/tui/document.hh"
+#include "ricochet/tui/input.hh"
+
+#include <optional>
+#include <string>
+#include <vector>
+
+namespace ricochet::tui::detail {
+
+// Layout supplies one printable spacing character and its combining marks per
+// glyph, with a measured width. Raw document text never goes directly to curses.
+struct PaintGlyph
+{
+  CellPoint position {};
+  int width { 1 };
+  std::wstring text {};
+  TextStyle style {};
+};
+
+struct Frame
+{
+  std::vector<PaintGlyph> glyphs {};
+  std::optional<CellPoint> cursor {};
+};
+
+} // namespace ricochet::tui::detail