layout/base/GeometryUtils.h
author shindli <shindli@mozilla.com>
Sun, 21 Jan 2018 23:57:26 +0200
changeset 400156 5faab9e619901b1513fd4ca137747231be550def
parent 388790 905239391e05483e8fb221378dd2092c5a0df8b7
child 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Merge inbound to mozilla-central. a=merge

/* -*- 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 "mozilla/ErrorResult.h"
#include "nsTArray.h"
#include "nsCOMPtr.h"

/**
 * This file defines utility functions for converting between layout
 * coordinate systems.
 */

class nsINode;

namespace mozilla {

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);

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_ */