1 files changed, 151 insertions, 0 deletions
diff --git a/dom/base/DOMQuad.cpp b/dom/base/DOMQuad.cpp
new file mode 100644
index 0000000000..38acffd049
--- /dev/null
+++ b/dom/base/DOMQuad.cpp
@@ -0,0 +1,151 @@
+/* -*- 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])
+
+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();
+}