sdl ui backend

1 files changed, 33 insertions, 0 deletions

diff --git a/ui_vaxis.zig b/ui_vaxis.zig
new file mode 100644
index 00000000..61bf51ca
--- /dev/null
+++ b/ui_vaxis.zig
@@ -0,0 +1,33 @@
+// The UI abstraction surface. `main.zig` and `image.zig` program against THIS
+// module (importing `"ui"`) instead of libvaxis directly, so the rendering +
+// input backend can be swapped at build time (`-Dui=vaxis|sdl`).
+//
+// This is the *vaxis* (real terminal) backend: a transparent passthrough. It
+// re-exports the libvaxis declarations the app uses, so every type (`Key`,
+// `Mouse`, `Window`, `Cell`, …), the `Vaxis` renderer/loop, `Tty`, and `init`
+// are exactly libvaxis's. All the UI logic therefore behaves identically to the
+// pre-refactor app — this file exists purely as the seam a different backend
+// (`ui_sdl.zig`) can replace.
+//
+// (Zig 0.16 dropped `pub usingnamespace`, so the re-export is explicit.)
+const vaxis = @import("vaxis");
+
+pub const Vaxis = vaxis.Vaxis;
+pub const Tty = vaxis.Tty;
+pub const Loop = vaxis.Loop;
+pub const init = vaxis.init;
+
+pub const Key = vaxis.Key;
+pub const Mouse = vaxis.Mouse;
+pub const Winsize = vaxis.Winsize;
+pub const Color = vaxis.Color;
+pub const Style = vaxis.Style;
+pub const Cell = vaxis.Cell;
+pub const Segment = vaxis.Segment;
+pub const Window = vaxis.Window;
+pub const Screen = vaxis.Screen;
+pub const Image = vaxis.Image;
+pub const Event = vaxis.Event;
+pub const Capabilities = vaxis.Capabilities;
+pub const Options = vaxis.Options;
+pub const CursorShape = vaxis.Cell.CursorShape;