layout/base/GeometryUtils.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef MOZILLA_GEOMETRYUTILS_H_
   8 #define MOZILLA_GEOMETRYUTILS_H_
   9
  10 #include "mozilla/ErrorResult.h"
  11 #include "nsTArray.h"
  12 #include "nsCOMPtr.h"
  13
  14 /**
  15  * This file defines utility functions for converting between layout
  16  * coordinate systems.
  17  */
  18
  19 class nsINode;
  20
  21 namespace mozilla {
  22
  23 namespace dom {
  24 struct BoxQuadOptions;
  25 struct ConvertCoordinateOptions;
  26 class DOMQuad;
  27 class DOMRectReadOnly;
  28 class DOMPoint;
  29 struct DOMPointInit;
  30 class OwningTextOrElementOrDocument;
  31 class TextOrElementOrDocument;
  32 enum class CallerType : uint32_t;
  33 }  // namespace dom
  34
  35 typedef dom::TextOrElementOrDocument GeometryNode;
  36 typedef dom::OwningTextOrElementOrDocument OwningGeometryNode;
  37
  38 /**
  39  * Computes quads for aNode using aOptions, according to
  40  * GeometryUtils.getBoxQuads. May set an error in aRv.
  41  */
  42 void GetBoxQuads(nsINode* aNode, const dom::BoxQuadOptions& aOptions,
  43                  nsTArray<RefPtr<dom::DOMQuad> >& aResult,
  44                  dom::CallerType aCallerType, ErrorResult& aRv);
  45
  46 already_AddRefed<dom::DOMQuad> ConvertQuadFromNode(
  47     nsINode* aTo, dom::DOMQuad& aQuad, const GeometryNode& aFrom,
  48     const dom::ConvertCoordinateOptions& aOptions, dom::CallerType aCallerType,
  49     ErrorResult& aRv);
  50
  51 already_AddRefed<dom::DOMQuad> ConvertRectFromNode(
  52     nsINode* aTo, dom::DOMRectReadOnly& aRect, const GeometryNode& aFrom,
  53     const dom::ConvertCoordinateOptions& aOptions, dom::CallerType aCallerType,
  54     ErrorResult& aRv);
  55
  56 already_AddRefed<dom::DOMPoint> ConvertPointFromNode(
  57     nsINode* aTo, const dom::DOMPointInit& aPoint, const GeometryNode& aFrom,
  58     const dom::ConvertCoordinateOptions& aOptions, dom::CallerType aCallerType,
  59     ErrorResult& aRv);
  60
  61 }  // namespace mozilla
  62
  63 #endif /* MOZILLA_GEOMETRYUTILS_H_ */