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Diffstat (limited to '')
| -rw-r--r-- | dom/base/DOMQuad.cpp | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/dom/base/DOMQuad.cpp b/dom/base/DOMQuad.cpp new file mode 100644 index 0000000000..fd1776f0e4 --- /dev/null +++ b/dom/base/DOMQuad.cpp @@ -0,0 +1,154 @@ +/* -*- 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/DOMQuad.h" + +#include <algorithm> +#include "mozilla/FloatingPoint.h" +#include "mozilla/MacroForEach.h" +#include "mozilla/dom/BindingDeclarations.h" +#include "mozilla/dom/DOMPoint.h" +#include "mozilla/dom/DOMQuadBinding.h" +#include "mozilla/dom/DOMRect.h" +#include "mozilla/dom/DOMRectBinding.h" +#include "mozilla/gfx/BasePoint.h" +#include "mozilla/gfx/MatrixFwd.h" +#include "nsIGlobalObject.h" + +using namespace mozilla; +using namespace mozilla::dom; +using namespace mozilla::gfx; + +NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DOMQuad, mParent, mPoints[0], mPoints[1], + mPoints[2], mPoints[3]) + +NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(DOMQuad, AddRef) +NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(DOMQuad, Release) + +DOMQuad::DOMQuad(nsISupports* aParent, CSSPoint aPoints[4]) : mParent(aParent) { + for (uint32_t i = 0; i < 4; ++i) { + mPoints[i] = new DOMPoint(aParent, aPoints[i].x, aPoints[i].y); + } +} + +DOMQuad::DOMQuad(nsISupports* aParent) : mParent(aParent) {} + +DOMQuad::~DOMQuad() = default; + +JSObject* DOMQuad::WrapObject(JSContext* aCx, + JS::Handle<JSObject*> aGivenProto) { + return DOMQuad_Binding::Wrap(aCx, this, aGivenProto); +} + +already_AddRefed<DOMQuad> DOMQuad::FromRect(const GlobalObject& aGlobal, + const DOMRectInit& aInit) { + nsISupports* parent = aGlobal.GetAsSupports(); + RefPtr<DOMQuad> obj = new DOMQuad(parent); + obj->mPoints[0] = new DOMPoint(parent, aInit.mX, aInit.mY, 0, 1); + obj->mPoints[1] = + new DOMPoint(parent, aInit.mX + aInit.mWidth, aInit.mY, 0, 1); + obj->mPoints[2] = new DOMPoint(parent, aInit.mX + aInit.mWidth, + aInit.mY + aInit.mHeight, 0, 1); + obj->mPoints[3] = + new DOMPoint(parent, aInit.mX, aInit.mY + aInit.mHeight, 0, 1); + return obj.forget(); +} + +already_AddRefed<DOMQuad> DOMQuad::FromQuad(const GlobalObject& aGlobal, + const DOMQuadInit& aInit) { + RefPtr<DOMQuad> obj = new DOMQuad(aGlobal.GetAsSupports()); + obj->mPoints[0] = DOMPoint::FromPoint(aGlobal, aInit.mP1); + obj->mPoints[1] = DOMPoint::FromPoint(aGlobal, aInit.mP2); + obj->mPoints[2] = DOMPoint::FromPoint(aGlobal, aInit.mP3); + obj->mPoints[3] = DOMPoint::FromPoint(aGlobal, aInit.mP4); + return obj.forget(); +} + +already_AddRefed<DOMQuad> DOMQuad::Constructor(const GlobalObject& aGlobal, + const DOMPointInit& aP1, + const DOMPointInit& aP2, + const DOMPointInit& aP3, + const DOMPointInit& aP4) { + RefPtr<DOMQuad> obj = new DOMQuad(aGlobal.GetAsSupports()); + obj->mPoints[0] = DOMPoint::FromPoint(aGlobal, aP1); + obj->mPoints[1] = DOMPoint::FromPoint(aGlobal, aP2); + obj->mPoints[2] = DOMPoint::FromPoint(aGlobal, aP3); + obj->mPoints[3] = DOMPoint::FromPoint(aGlobal, aP4); + return obj.forget(); +} + +already_AddRefed<DOMQuad> DOMQuad::Constructor(const GlobalObject& aGlobal, + const DOMRectReadOnly& aRect) { + CSSPoint points[4]; + Float x = aRect.X(), y = aRect.Y(), w = aRect.Width(), h = aRect.Height(); + points[0] = CSSPoint(x, y); + points[1] = CSSPoint(x + w, y); + points[2] = CSSPoint(x + w, y + h); + points[3] = CSSPoint(x, y + h); + RefPtr<DOMQuad> obj = new DOMQuad(aGlobal.GetAsSupports(), points); + return obj.forget(); +} + +void DOMQuad::GetHorizontalMinMax(double* aX1, double* aX2) const { + double x1, x2; + x1 = x2 = Point(0)->X(); + for (uint32_t i = 1; i < 4; ++i) { + double x = Point(i)->X(); + x1 = NaNSafeMin(x1, x); + x2 = NaNSafeMax(x2, x); + } + *aX1 = x1; + *aX2 = x2; +} + +void DOMQuad::GetVerticalMinMax(double* aY1, double* aY2) const { + double y1, y2; + y1 = y2 = Point(0)->Y(); + for (uint32_t i = 1; i < 4; ++i) { + double y = Point(i)->Y(); + y1 = NaNSafeMin(y1, y); + y2 = NaNSafeMax(y2, y); + } + *aY1 = y1; + *aY2 = y2; +} + +already_AddRefed<DOMRectReadOnly> DOMQuad::GetBounds() const { + double x1, x2; + double y1, y2; + + GetHorizontalMinMax(&x1, &x2); + GetVerticalMinMax(&y1, &y2); + + RefPtr<DOMRectReadOnly> rval = + new DOMRectReadOnly(GetParentObject(), x1, y1, x2 - x1, y2 - y1); + return rval.forget(); +} + +// https://drafts.fxtf.org/geometry/#structured-serialization +bool DOMQuad::WriteStructuredClone(JSContext* aCx, + JSStructuredCloneWriter* aWriter) const { + for (const auto& point : mPoints) { + if (!point->WriteStructuredClone(aCx, aWriter)) { + return false; + } + } + return true; +} + +// static +already_AddRefed<DOMQuad> DOMQuad::ReadStructuredClone( + JSContext* aCx, nsIGlobalObject* aGlobal, + JSStructuredCloneReader* aReader) { + RefPtr<DOMQuad> quad = new DOMQuad(aGlobal); + for (auto& point : quad->mPoints) { + point = DOMPoint::ReadStructuredClone(aCx, aGlobal, aReader); + if (!point) { + return nullptr; + } + } + return quad.forget(); +} |