1 files changed, 68 insertions, 0 deletions
diff --git a/layout/base/GeometryUtils.h b/layout/base/GeometryUtils.h
new file mode 100644
index 0000000000..eabbad5305
--- /dev/null
+++ b/layout/base/GeometryUtils.h
@@ -0,0 +1,68 @@
+/* -*- 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_GEOMETRYUTILS_H_
+#define MOZILLA_GEOMETRYUTILS_H_
+
+#include "nsTArray.h"
+#include "nsCOMPtr.h"
+
+/**
+ * This file defines utility functions for converting between layout
+ * coordinate systems.
+ */
+
+class nsINode;
+
+namespace mozilla {
+class ErrorResult;
+
+namespace dom {
+struct BoxQuadOptions;
+struct ConvertCoordinateOptions;
+class DOMQuad;
+class DOMRectReadOnly;
+class DOMPoint;
+struct DOMPointInit;
+class OwningTextOrElementOrDocument;
+class TextOrElementOrDocument;
+enum class CallerType : uint32_t;
+}  // namespace dom
+
+typedef dom::TextOrElementOrDocument GeometryNode;
+typedef dom::OwningTextOrElementOrDocument OwningGeometryNode;
+
+/**
+ * Computes quads for aNode using aOptions, according to
+ * GeometryUtils.getBoxQuads. May set an error in aRv.
+ */
+void GetBoxQuads(nsINode* aNode, const dom::BoxQuadOptions& aOptions,
+                 nsTArray<RefPtr<dom::DOMQuad> >& aResult,
+                 dom::CallerType aCallerType, ErrorResult& aRv);
+
+void GetBoxQuadsFromWindowOrigin(nsINode* aNode,
+                                 const dom::BoxQuadOptions& aOptions,
+                                 nsTArray<RefPtr<dom::DOMQuad> >& aResult,
+                                 ErrorResult& aRv);
+
+already_AddRefed<dom::DOMQuad> ConvertQuadFromNode(
+    nsINode* aTo, dom::DOMQuad& aQuad, const GeometryNode& aFrom,
+    const dom::ConvertCoordinateOptions& aOptions, dom::CallerType aCallerType,
+    ErrorResult& aRv);
+
+already_AddRefed<dom::DOMQuad> ConvertRectFromNode(
+    nsINode* aTo, dom::DOMRectReadOnly& aRect, const GeometryNode& aFrom,
+    const dom::ConvertCoordinateOptions& aOptions, dom::CallerType aCallerType,
+    ErrorResult& aRv);
+
+already_AddRefed<dom::DOMPoint> ConvertPointFromNode(
+    nsINode* aTo, const dom::DOMPointInit& aPoint, const GeometryNode& aFrom,
+    const dom::ConvertCoordinateOptions& aOptions, dom::CallerType aCallerType,
+    ErrorResult& aRv);
+
+}  // namespace mozilla
+
+#endif /* MOZILLA_GEOMETRYUTILS_H_ */