1 files changed, 81 insertions, 0 deletions
diff --git a/dom/svg/SVGPoint.h b/dom/svg/SVGPoint.h
new file mode 100644
index 0000000000..2dcee49cac
--- /dev/null
+++ b/dom/svg/SVGPoint.h
@@ -0,0 +1,81 @@
+/* -*- 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 DOM_SVG_SVGPOINT_H_
+#define DOM_SVG_SVGPOINT_H_
+
+#include "nsDebug.h"
+#include "gfxPoint.h"
+#include "mozilla/gfx/Point.h"
+#include "mozilla/FloatingPoint.h"
+
+namespace mozilla {
+
+/**
+ * This class is currently used for point list attributes.
+ *
+ * The DOM wrapper class for this class is DOMSVGPoint.
+ */
+class SVGPoint {
+  using Point = mozilla::gfx::Point;
+
+ public:
+  SVGPoint() : mX(0.0f), mY(0.0f) {}
+
+  SVGPoint(float aX, float aY) : mX(aX), mY(aY) {
+    NS_ASSERTION(IsValid(), "Constructed an invalid SVGPoint");
+  }
+
+  bool operator==(const SVGPoint& rhs) const {
+    return mX == rhs.mX && mY == rhs.mY;
+  }
+
+  SVGPoint& operator+=(const SVGPoint& rhs) {
+    mX += rhs.mX;
+    mY += rhs.mY;
+    return *this;
+  }
+
+  operator gfxPoint() const { return gfxPoint(mX, mY); }
+
+  operator Point() const { return Point(mX, mY); }
+
+#ifdef DEBUG
+  bool IsValid() const { return std::isfinite(mX) && std::isfinite(mY); }
+#endif
+
+  void SetX(float aX) { mX = aX; }
+  void SetY(float aY) { mY = aY; }
+  float GetX() const { return mX; }
+  float GetY() const { return mY; }
+
+  bool operator!=(const SVGPoint& rhs) const {
+    return mX != rhs.mX || mY != rhs.mY;
+  }
+
+  float mX;
+  float mY;
+};
+
+inline SVGPoint operator+(const SVGPoint& aP1, const SVGPoint& aP2) {
+  return SVGPoint(aP1.mX + aP2.mX, aP1.mY + aP2.mY);
+}
+
+inline SVGPoint operator-(const SVGPoint& aP1, const SVGPoint& aP2) {
+  return SVGPoint(aP1.mX - aP2.mX, aP1.mY - aP2.mY);
+}
+
+inline SVGPoint operator*(float aFactor, const SVGPoint& aPoint) {
+  return SVGPoint(aFactor * aPoint.mX, aFactor * aPoint.mY);
+}
+
+inline SVGPoint operator*(const SVGPoint& aPoint, float aFactor) {
+  return SVGPoint(aFactor * aPoint.mX, aFactor * aPoint.mY);
+}
+
+}  // namespace mozilla
+
+#endif  // DOM_SVG_SVGPOINT_H_