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/* -*- 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_DOMRECT_H_
#define MOZILLA_DOMRECT_H_
#include <algorithm>
#include <cstdint>
#include <new>
#include <utility>
#include "js/TypeDecls.h"
#include "mozilla/AlreadyAddRefed.h"
#include "mozilla/Assertions.h"
#include "mozilla/FloatingPoint.h"
#include "mozilla/RefPtr.h"
#include "nsCOMPtr.h"
#include "nsCycleCollectionParticipant.h"
#include "nsISupports.h"
#include "nsTArray.h"
#include "nsWrapperCache.h"
class JSObject;
class nsIGlobalObject;
struct JSContext;
struct JSStructuredCloneReader;
struct JSStructuredCloneWriter;
struct nsRect;
namespace mozilla {
namespace dom {
class GlobalObject;
struct DOMRectInit;
class DOMRectReadOnly : public nsISupports, public nsWrapperCache {
protected:
virtual ~DOMRectReadOnly() = default;
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMRectReadOnly)
explicit DOMRectReadOnly(nsISupports* aParent, double aX = 0, double aY = 0,
double aWidth = 0, double aHeight = 0)
: mParent(aParent), mX(aX), mY(aY), mWidth(aWidth), mHeight(aHeight) {}
nsISupports* GetParentObject() const {
MOZ_ASSERT(mParent);
return mParent;
}
virtual JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
static already_AddRefed<DOMRectReadOnly> FromRect(const GlobalObject& aGlobal,
const DOMRectInit& aInit);
static already_AddRefed<DOMRectReadOnly> Constructor(
const GlobalObject& aGlobal, double aX, double aY, double aWidth,
double aHeight);
double X() const { return mX; }
double Y() const { return mY; }
double Width() const { return mWidth; }
double Height() const { return mHeight; }
double Left() const {
double x = X(), w = Width();
return NaNSafeMin(x, x + w);
}
double Top() const {
double y = Y(), h = Height();
return NaNSafeMin(y, y + h);
}
double Right() const {
double x = X(), w = Width();
return NaNSafeMax(x, x + w);
}
double Bottom() const {
double y = Y(), h = Height();
return NaNSafeMax(y, y + h);
}
bool WriteStructuredClone(JSContext* aCx,
JSStructuredCloneWriter* aWriter) const;
static already_AddRefed<DOMRectReadOnly> ReadStructuredClone(
JSContext* aCx, nsIGlobalObject* aGlobal,
JSStructuredCloneReader* aReader);
protected:
// Shared implementation of ReadStructuredClone for DOMRect and
// DOMRectReadOnly.
bool ReadStructuredClone(JSStructuredCloneReader* aReader);
nsCOMPtr<nsISupports> mParent;
double mX, mY, mWidth, mHeight;
};
class DOMRect final : public DOMRectReadOnly {
public:
explicit DOMRect(nsISupports* aParent, double aX = 0, double aY = 0,
double aWidth = 0, double aHeight = 0)
: DOMRectReadOnly(aParent, aX, aY, aWidth, aHeight) {}
NS_INLINE_DECL_REFCOUNTING_INHERITED(DOMRect, DOMRectReadOnly)
static already_AddRefed<DOMRect> FromRect(const GlobalObject& aGlobal,
const DOMRectInit& aInit);
static already_AddRefed<DOMRect> Constructor(const GlobalObject& aGlobal,
double aX, double aY,
double aWidth, double aHeight);
virtual JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
static already_AddRefed<DOMRect> ReadStructuredClone(
JSContext* aCx, nsIGlobalObject* aGlobal,
JSStructuredCloneReader* aReader);
using DOMRectReadOnly::ReadStructuredClone;
void SetRect(float aX, float aY, float aWidth, float aHeight) {
mX = aX;
mY = aY;
mWidth = aWidth;
mHeight = aHeight;
}
void SetLayoutRect(const nsRect& aLayoutRect);
void SetX(double aX) { mX = aX; }
void SetY(double aY) { mY = aY; }
void SetWidth(double aWidth) { mWidth = aWidth; }
void SetHeight(double aHeight) { mHeight = aHeight; }
static DOMRect* FromSupports(nsISupports* aSupports) {
return static_cast<DOMRect*>(aSupports);
}
private:
~DOMRect() = default;
};
class DOMRectList final : public nsISupports, public nsWrapperCache {
~DOMRectList() = default;
public:
explicit DOMRectList(nsISupports* aParent) : mParent(aParent) {}
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMRectList)
virtual JSObject* WrapObject(JSContext* cx,
JS::Handle<JSObject*> aGivenProto) override;
nsISupports* GetParentObject() { return mParent; }
void Append(DOMRect* aElement) { mArray.AppendElement(aElement); }
uint32_t Length() { return mArray.Length(); }
DOMRect* Item(uint32_t aIndex) { return mArray.SafeElementAt(aIndex); }
DOMRect* IndexedGetter(uint32_t aIndex, bool& aFound) {
aFound = aIndex < mArray.Length();
if (!aFound) {
return nullptr;
}
return mArray[aIndex];
}
protected:
nsTArray<RefPtr<DOMRect> > mArray;
nsCOMPtr<nsISupports> mParent;
};
} // namespace dom
} // namespace mozilla
#endif /*MOZILLA_DOMRECT_H_*/
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