1 files changed, 49 insertions, 0 deletions
diff --git a/gfx/src/AAStroke.h b/gfx/src/AAStroke.h
new file mode 100644
index 0000000000..685cf60647
--- /dev/null
+++ b/gfx/src/AAStroke.h
@@ -0,0 +1,49 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MOZILLA_GFX_AA_STROKE_H
+#define MOZILLA_GFX_AA_STROKE_H
+
+#include <stddef.h>
+
+namespace AAStroke {
+
+enum class LineCap { Round, Square, Butt };
+enum class LineJoin { Round, Miter, Bevel };
+struct StrokeStyle {
+  float width;
+  LineCap cap;
+  LineJoin join;
+  float miter_limit;
+};
+struct Stroker;
+struct OutputVertex {
+  float x;
+  float y;
+  float coverage;
+};
+struct VertexBuffer {
+  OutputVertex* data;
+  size_t len;
+};
+
+extern "C" {
+Stroker* aa_stroke_new(const StrokeStyle* style,
+                       OutputVertex* output_ptr = nullptr,
+                       size_t output_capacity = 0);
+void aa_stroke_move_to(Stroker* s, float x, float y, bool closed);
+void aa_stroke_line_to(Stroker* s, float x, float y, bool end);
+void aa_stroke_curve_to(Stroker* s, float c1x, float c1y, float c2x, float c2y,
+                        float x, float y, bool end);
+void aa_stroke_close(Stroker* s);
+VertexBuffer aa_stroke_finish(Stroker* s);
+void aa_stroke_vertex_buffer_release(VertexBuffer vb);
+void aa_stroke_release(Stroker* s);
+};
+
+}  // namespace AAStroke
+
+#endif  // MOZILLA_GFX_AA_STROKE_H