import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/svg/SVGOrientSMILType.h

@@ -0,0 +1,68 @@
+/* -*- 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 MOZILLA_SVGORIENTSMILTYPE_H_
+#define MOZILLA_SVGORIENTSMILTYPE_H_
+
+#include "mozilla/Attributes.h"
+#include "nsISMILType.h"
+
+class nsSMILValue;
+
+/**
+ * This nsISMILType class is a special case for the 'orient' attribute on SVG's
+ * 'marker' element.
+ *
+ *   orient = "auto | auto-start-reverse | <angle>"
+ *
+ * Unusually, this attribute doesn't have just a single corresponding DOM
+ * property, but rather is split into two properties: 'orientType' (of type
+ * SVGAnimatedEnumeration) and 'orientAngle' (of type SVGAnimatedAngle). If
+ * 'orientType.animVal' is SVG_MARKER_ORIENT_ANGLE, then
+ * 'orientAngle.animVal' contains the angle that is being used. The lacuna
+ * value is 0.
+ *
+ * The SVG 2 specification does not define a
+ * SVG_MARKER_ORIENT_AUTO_START_REVERSE constant value for orientType to use;
+ * instead, if the attribute is set to "auto-start-reverse",
+ * SVG_MARKER_ORIENT_UNKNOWN is used.  Internally, however, we do use a
+ * constant with this name.
+ */
+
+namespace mozilla {
+
+class SVGOrientSMILType : public nsISMILType
+{
+public:
+  // Singleton for nsSMILValue objects to hold onto.
+  static SVGOrientSMILType sSingleton;
+
+protected:
+  // nsISMILType Methods
+  // -------------------
+  virtual void     Init(nsSMILValue& aValue) const override;
+  virtual void     Destroy(nsSMILValue&) const override;
+  virtual nsresult Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const override;
+  virtual bool     IsEqual(const nsSMILValue& aLeft,
+                           const nsSMILValue& aRight) const override;
+  virtual nsresult Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd,
+                       uint32_t aCount) const override;
+  virtual nsresult ComputeDistance(const nsSMILValue& aFrom,
+                                   const nsSMILValue& aTo,
+                                   double& aDistance) const override;
+  virtual nsresult Interpolate(const nsSMILValue& aStartVal,
+                               const nsSMILValue& aEndVal,
+                               double aUnitDistance,
+                               nsSMILValue& aResult) const override;
+
+private:
+  // Private constructor: prevent instances beyond my singleton.
+  constexpr SVGOrientSMILType() {}
+};
+
+} // namespace mozilla
+
+#endif // MOZILLA_SVGORIENTSMILTYPE_H_