feat: finish ghostty pane backend integration

1 files changed, 27 insertions, 0 deletions

diff --git a/vendor/libghostty-vt/pkg/harfbuzz/shape.zig b/vendor/libghostty-vt/pkg/harfbuzz/shape.zig
new file mode 100644
index 00000000..b49020c3
--- /dev/null
+++ b/vendor/libghostty-vt/pkg/harfbuzz/shape.zig
@@ -0,0 +1,27 @@
+const std = @import("std");
+const c = @import("c.zig").c;
+const Font = @import("font.zig").Font;
+const Buffer = @import("buffer.zig").Buffer;
+const Feature = @import("common.zig").Feature;
+
+/// Shapes buffer using font turning its Unicode characters content to
+/// positioned glyphs. If features is not NULL, it will be used to control
+/// the features applied during shaping. If two features have the same tag
+/// but overlapping ranges the value of the feature with the higher index
+/// takes precedence.
+pub fn shape(font: Font, buf: Buffer, features: ?[]const Feature) void {
+    const hb_feats: [*c]const c.hb_feature_t = feats: {
+        if (features) |fs| {
+            if (fs.len > 0) break :feats @ptrCast(fs.ptr);
+        }
+
+        break :feats null;
+    };
+
+    c.hb_shape(
+        font.handle,
+        buf.handle,
+        hb_feats,
+        if (features) |f| @intCast(f.len) else 0,
+    );
+}