1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/base/src/DOMRect.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,211 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef MOZILLA_DOMRECT_H_
1.10 +#define MOZILLA_DOMRECT_H_
1.11 +
1.12 +#include "nsIDOMClientRect.h"
1.13 +#include "nsIDOMClientRectList.h"
1.14 +#include "nsTArray.h"
1.15 +#include "nsCOMPtr.h"
1.16 +#include "nsAutoPtr.h"
1.17 +#include "nsWrapperCache.h"
1.18 +#include "nsCycleCollectionParticipant.h"
1.19 +#include "mozilla/Attributes.h"
1.20 +#include "mozilla/dom/BindingDeclarations.h"
1.21 +#include "mozilla/ErrorResult.h"
1.22 +#include <algorithm>
1.23 +
1.24 +struct nsRect;
1.25 +
1.26 +namespace mozilla {
1.27 +namespace dom {
1.28 +
1.29 +class DOMRectReadOnly : public nsISupports
1.30 + , public nsWrapperCache
1.31 +{
1.32 +public:
1.33 + NS_DECL_CYCLE_COLLECTING_ISUPPORTS
1.34 + NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMRectReadOnly)
1.35 +
1.36 + virtual ~DOMRectReadOnly() {}
1.37 +
1.38 + DOMRectReadOnly(nsISupports* aParent)
1.39 + : mParent(aParent)
1.40 + {
1.41 + SetIsDOMBinding();
1.42 + }
1.43 +
1.44 + nsISupports* GetParentObject() const
1.45 + {
1.46 + MOZ_ASSERT(mParent);
1.47 + return mParent;
1.48 + }
1.49 + virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
1.50 +
1.51 + virtual double X() const = 0;
1.52 + virtual double Y() const = 0;
1.53 + virtual double Width() const = 0;
1.54 + virtual double Height() const = 0;
1.55 +
1.56 + double Left() const
1.57 + {
1.58 + double x = X(), w = Width();
1.59 + return std::min(x, x + w);
1.60 + }
1.61 + double Top() const
1.62 + {
1.63 + double y = Y(), h = Height();
1.64 + return std::min(y, y + h);
1.65 + }
1.66 + double Right() const
1.67 + {
1.68 + double x = X(), w = Width();
1.69 + return std::max(x, x + w);
1.70 + }
1.71 + double Bottom() const
1.72 + {
1.73 + double y = Y(), h = Height();
1.74 + return std::max(y, y + h);
1.75 + }
1.76 +
1.77 +protected:
1.78 + nsCOMPtr<nsISupports> mParent;
1.79 +};
1.80 +
1.81 +class DOMRect MOZ_FINAL : public DOMRectReadOnly
1.82 + , public nsIDOMClientRect
1.83 +{
1.84 +public:
1.85 + DOMRect(nsISupports* aParent, double aX = 0, double aY = 0,
1.86 + double aWidth = 0, double aHeight = 0)
1.87 + : DOMRectReadOnly(aParent)
1.88 + , mX(aX)
1.89 + , mY(aY)
1.90 + , mWidth(aWidth)
1.91 + , mHeight(aHeight)
1.92 + {
1.93 + }
1.94 +
1.95 + NS_DECL_ISUPPORTS_INHERITED
1.96 + NS_DECL_NSIDOMCLIENTRECT
1.97 +
1.98 + static already_AddRefed<DOMRect>
1.99 + Constructor(const GlobalObject& aGlobal, ErrorResult& aRV);
1.100 + static already_AddRefed<DOMRect>
1.101 + Constructor(const GlobalObject& aGlobal, double aX, double aY,
1.102 + double aWidth, double aHeight, ErrorResult& aRV);
1.103 +
1.104 + virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
1.105 +
1.106 + void SetRect(float aX, float aY, float aWidth, float aHeight) {
1.107 + mX = aX; mY = aY; mWidth = aWidth; mHeight = aHeight;
1.108 + }
1.109 + void SetLayoutRect(const nsRect& aLayoutRect);
1.110 +
1.111 + virtual double X() const MOZ_OVERRIDE
1.112 + {
1.113 + return mX;
1.114 + }
1.115 + virtual double Y() const MOZ_OVERRIDE
1.116 + {
1.117 + return mY;
1.118 + }
1.119 + virtual double Width() const MOZ_OVERRIDE
1.120 + {
1.121 + return mWidth;
1.122 + }
1.123 + virtual double Height() const MOZ_OVERRIDE
1.124 + {
1.125 + return mHeight;
1.126 + }
1.127 +
1.128 + void SetX(double aX)
1.129 + {
1.130 + mX = aX;
1.131 + }
1.132 + void SetY(double aY)
1.133 + {
1.134 + mY = aY;
1.135 + }
1.136 + void SetWidth(double aWidth)
1.137 + {
1.138 + mWidth = aWidth;
1.139 + }
1.140 + void SetHeight(double aHeight)
1.141 + {
1.142 + mHeight = aHeight;
1.143 + }
1.144 +
1.145 +protected:
1.146 + double mX, mY, mWidth, mHeight;
1.147 +};
1.148 +
1.149 +class DOMRectList MOZ_FINAL : public nsIDOMClientRectList,
1.150 + public nsWrapperCache
1.151 +{
1.152 +public:
1.153 + DOMRectList(nsISupports *aParent) : mParent(aParent)
1.154 + {
1.155 + SetIsDOMBinding();
1.156 + }
1.157 +
1.158 + NS_DECL_CYCLE_COLLECTING_ISUPPORTS
1.159 + NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMRectList)
1.160 +
1.161 + NS_DECL_NSIDOMCLIENTRECTLIST
1.162 +
1.163 + virtual JSObject* WrapObject(JSContext *cx) MOZ_OVERRIDE;
1.164 +
1.165 + nsISupports* GetParentObject()
1.166 + {
1.167 + return mParent;
1.168 + }
1.169 +
1.170 + void Append(DOMRect* aElement) { mArray.AppendElement(aElement); }
1.171 +
1.172 + static DOMRectList* FromSupports(nsISupports* aSupports)
1.173 + {
1.174 +#ifdef DEBUG
1.175 + {
1.176 + nsCOMPtr<nsIDOMClientRectList> list_qi = do_QueryInterface(aSupports);
1.177 +
1.178 + // If this assertion fires the QI implementation for the object in
1.179 + // question doesn't use the nsIDOMClientRectList pointer as the nsISupports
1.180 + // pointer. That must be fixed, or we'll crash...
1.181 + NS_ASSERTION(list_qi == static_cast<nsIDOMClientRectList*>(aSupports),
1.182 + "Uh, fix QI!");
1.183 + }
1.184 +#endif
1.185 +
1.186 + return static_cast<DOMRectList*>(aSupports);
1.187 + }
1.188 +
1.189 + uint32_t Length()
1.190 + {
1.191 + return mArray.Length();
1.192 + }
1.193 + DOMRect* Item(uint32_t aIndex)
1.194 + {
1.195 + return mArray.SafeElementAt(aIndex);
1.196 + }
1.197 + DOMRect* IndexedGetter(uint32_t aIndex, bool& aFound)
1.198 + {
1.199 + aFound = aIndex < mArray.Length();
1.200 + if (!aFound) {
1.201 + return nullptr;
1.202 + }
1.203 + return mArray[aIndex];
1.204 + }
1.205 +
1.206 +protected:
1.207 + nsTArray<nsRefPtr<DOMRect> > mArray;
1.208 + nsCOMPtr<nsISupports> mParent;
1.209 +};
1.210 +
1.211 +}
1.212 +}
1.213 +
1.214 +#endif /*MOZILLA_DOMRECT_H_*/
