1 files changed, 121 insertions, 0 deletions
diff --git a/dom/svg/DOMSVGPoint.cpp b/dom/svg/DOMSVGPoint.cpp
new file mode 100644
index 000000000..fa87ee189
--- /dev/null
+++ b/dom/svg/DOMSVGPoint.cpp
@@ -0,0 +1,121 @@
+/* -*- 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 "DOMSVGPoint.h"
+#include "DOMSVGPointList.h"
+#include "SVGPoint.h"
+#include "gfx2DGlue.h"
+#include "nsSVGElement.h"
+#include "nsError.h"
+#include "mozilla/dom/SVGMatrix.h"
+
+// See the architecture comment in DOMSVGPointList.h.
+
+using namespace mozilla;
+using namespace mozilla::gfx;
+
+namespace mozilla {
+
+//----------------------------------------------------------------------
+// Helper class: AutoChangePointNotifier
+// Stack-based helper class to pair calls to WillChangePointList and
+// DidChangePointList.
+class MOZ_RAII AutoChangePointNotifier
+{
+public:
+  explicit AutoChangePointNotifier(DOMSVGPoint* aPoint MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
+    : mPoint(aPoint)
+  {
+    MOZ_GUARD_OBJECT_NOTIFIER_INIT;
+    MOZ_ASSERT(mPoint, "Expecting non-null point");
+    MOZ_ASSERT(mPoint->HasOwner(),
+               "Expecting list to have an owner for notification");
+    mEmptyOrOldValue =
+      mPoint->Element()->WillChangePointList();
+  }
+
+  ~AutoChangePointNotifier()
+  {
+    mPoint->Element()->DidChangePointList(mEmptyOrOldValue);
+    if (mPoint->mList->AttrIsAnimating()) {
+      mPoint->Element()->AnimationNeedsResample();
+    }
+  }
+
+private:
+  DOMSVGPoint* const mPoint;
+  nsAttrValue  mEmptyOrOldValue;
+  MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
+};
+
+} // namespace mozilla
+
+float
+DOMSVGPoint::X()
+{
+  if (mIsAnimValItem && HasOwner()) {
+    Element()->FlushAnimations(); // May make HasOwner() == false
+  }
+  return HasOwner() ? InternalItem().mX : mPt.mX;
+}
+
+void
+DOMSVGPoint::SetX(float aX, ErrorResult& rv)
+{
+  if (mIsAnimValItem || mIsReadonly) {
+    rv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
+    return;
+  }
+
+  if (HasOwner()) {
+    if (InternalItem().mX == aX) {
+      return;
+    }
+    AutoChangePointNotifier notifier(this);
+    InternalItem().mX = aX;
+    return;
+  }
+  mPt.mX = aX;
+}
+
+float
+DOMSVGPoint::Y()
+{
+  if (mIsAnimValItem && HasOwner()) {
+    Element()->FlushAnimations(); // May make HasOwner() == false
+  }
+  return HasOwner() ? InternalItem().mY : mPt.mY;
+}
+
+void
+DOMSVGPoint::SetY(float aY, ErrorResult& rv)
+{
+  if (mIsAnimValItem || mIsReadonly) {
+    rv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
+    return;
+  }
+
+  if (HasOwner()) {
+    if (InternalItem().mY == aY) {
+      return;
+    }
+    AutoChangePointNotifier notifier(this);
+    InternalItem().mY = aY;
+    return;
+  }
+  mPt.mY = aY;
+}
+
+already_AddRefed<nsISVGPoint>
+DOMSVGPoint::MatrixTransform(dom::SVGMatrix& matrix)
+{
+  float x = HasOwner() ? InternalItem().mX : mPt.mX;
+  float y = HasOwner() ? InternalItem().mY : mPt.mY;
+
+  Point pt = ToMatrix(matrix.GetMatrix()).TransformPoint(Point(x, y));
+  nsCOMPtr<nsISVGPoint> newPoint = new DOMSVGPoint(pt);
+  return newPoint.forget();
+}