From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- dom/base/DOMRect.cpp | 160 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 160 insertions(+) create mode 100644 dom/base/DOMRect.cpp (limited to 'dom/base/DOMRect.cpp') diff --git a/dom/base/DOMRect.cpp b/dom/base/DOMRect.cpp new file mode 100644 index 0000000000..d7ed164ec5 --- /dev/null +++ b/dom/base/DOMRect.cpp @@ -0,0 +1,160 @@ +/* -*- 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/. */ + +#include "mozilla/dom/DOMRect.h" + +#include +#include "js/StructuredClone.h" +#include "mozilla/AppUnits.h" +#include "mozilla/Casting.h" +#include "mozilla/MacroForEach.h" +#include "mozilla/dom/BindingDeclarations.h" +#include "mozilla/dom/DOMRectBinding.h" +#include "mozilla/dom/DOMRectListBinding.h" +#include "nsIGlobalObject.h" +#include "nsRect.h" + +using namespace mozilla; +using namespace mozilla::dom; + +NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DOMRectReadOnly, mParent) +NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMRectReadOnly) +NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMRectReadOnly) +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMRectReadOnly) + NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY + NS_INTERFACE_MAP_ENTRY(nsISupports) +NS_INTERFACE_MAP_END + +JSObject* DOMRectReadOnly::WrapObject(JSContext* aCx, + JS::Handle aGivenProto) { + MOZ_ASSERT(mParent); + return DOMRectReadOnly_Binding::Wrap(aCx, this, aGivenProto); +} + +already_AddRefed DOMRectReadOnly::FromRect( + const GlobalObject& aGlobal, const DOMRectInit& aInit) { + RefPtr obj = new DOMRectReadOnly( + aGlobal.GetAsSupports(), aInit.mX, aInit.mY, aInit.mWidth, aInit.mHeight); + return obj.forget(); +} + +already_AddRefed DOMRectReadOnly::Constructor( + const GlobalObject& aGlobal, double aX, double aY, double aWidth, + double aHeight) { + RefPtr obj = + new DOMRectReadOnly(aGlobal.GetAsSupports(), aX, aY, aWidth, aHeight); + return obj.forget(); +} + +// https://drafts.fxtf.org/geometry/#structured-serialization +bool DOMRectReadOnly::WriteStructuredClone( + JSContext* aCx, JSStructuredCloneWriter* aWriter) const { +#define WriteDouble(d) \ + JS_WriteUint32Pair(aWriter, (BitwiseCast(d) >> 32) & 0xffffffff, \ + BitwiseCast(d) & 0xffffffff) + + return WriteDouble(mX) && WriteDouble(mY) && WriteDouble(mWidth) && + WriteDouble(mHeight); + +#undef WriteDouble +} + +// static +already_AddRefed DOMRectReadOnly::ReadStructuredClone( + JSContext* aCx, nsIGlobalObject* aGlobal, + JSStructuredCloneReader* aReader) { + RefPtr retval = new DOMRectReadOnly(aGlobal); + if (!retval->ReadStructuredClone(aReader)) { + return nullptr; + } + return retval.forget(); +} + +bool DOMRectReadOnly::ReadStructuredClone(JSStructuredCloneReader* aReader) { + uint32_t high; + uint32_t low; + +#define ReadDouble(d) \ + if (!JS_ReadUint32Pair(aReader, &high, &low)) { \ + return false; \ + } \ + (*(d) = BitwiseCast(static_cast(high) << 32 | low)) + + ReadDouble(&mX); + ReadDouble(&mY); + ReadDouble(&mWidth); + ReadDouble(&mHeight); + + return true; + +#undef ReadDouble +} + +// ----------------------------------------------------------------------------- + +JSObject* DOMRect::WrapObject(JSContext* aCx, + JS::Handle aGivenProto) { + MOZ_ASSERT(mParent); + return DOMRect_Binding::Wrap(aCx, this, aGivenProto); +} + +already_AddRefed DOMRect::FromRect(const GlobalObject& aGlobal, + const DOMRectInit& aInit) { + RefPtr obj = new DOMRect(aGlobal.GetAsSupports(), aInit.mX, aInit.mY, + aInit.mWidth, aInit.mHeight); + return obj.forget(); +} + +already_AddRefed DOMRect::Constructor(const GlobalObject& aGlobal, + double aX, double aY, + double aWidth, double aHeight) { + RefPtr obj = + new DOMRect(aGlobal.GetAsSupports(), aX, aY, aWidth, aHeight); + return obj.forget(); +} + +// static +already_AddRefed DOMRect::ReadStructuredClone( + JSContext* aCx, nsIGlobalObject* aGlobal, + JSStructuredCloneReader* aReader) { + RefPtr retval = new DOMRect(aGlobal); + if (!retval->ReadStructuredClone(aReader)) { + return nullptr; + } + return retval.forget(); +} + +// ----------------------------------------------------------------------------- + +NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DOMRectList, mParent, mArray) + +NS_INTERFACE_TABLE_HEAD(DOMRectList) + NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY + NS_INTERFACE_TABLE0(DOMRectList) + NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(DOMRectList) +NS_INTERFACE_MAP_END + +NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMRectList) +NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMRectList) + +JSObject* DOMRectList::WrapObject(JSContext* cx, + JS::Handle aGivenProto) { + return mozilla::dom::DOMRectList_Binding::Wrap(cx, this, aGivenProto); +} + +static double RoundFloat(double aValue) { return floor(aValue + 0.5); } + +void DOMRect::SetLayoutRect(const nsRect& aLayoutRect) { + double scale = 65536.0; + // Round to the nearest 1/scale units. We choose scale so it can be + // represented exactly by machine floating point. + double scaleInv = 1 / scale; + double t2pScaled = scale / AppUnitsPerCSSPixel(); + double x = RoundFloat(aLayoutRect.x * t2pScaled) * scaleInv; + double y = RoundFloat(aLayoutRect.y * t2pScaled) * scaleInv; + SetRect(x, y, RoundFloat(aLayoutRect.XMost() * t2pScaled) * scaleInv - x, + RoundFloat(aLayoutRect.YMost() * t2pScaled) * scaleInv - y); +} -- cgit v1.2.3