1 files changed, 139 insertions, 0 deletions
diff --git a/dom/svg/SVGAnimatedPreserveAspectRatio.h b/dom/svg/SVGAnimatedPreserveAspectRatio.h
new file mode 100644
index 0000000000..cc4721e42f
--- /dev/null
+++ b/dom/svg/SVGAnimatedPreserveAspectRatio.h
@@ -0,0 +1,139 @@
+/* -*- 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_SVGANIMATEDPRESERVEASPECTRATIO_H_
+#define DOM_SVG_SVGANIMATEDPRESERVEASPECTRATIO_H_
+
+#include "nsCycleCollectionParticipant.h"
+#include "nsError.h"
+#include "mozilla/SVGPreserveAspectRatio.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/SMILAttr.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/dom/SVGElement.h"
+
+namespace mozilla {
+
+class SMILValue;
+
+namespace dom {
+class DOMSVGAnimatedPreserveAspectRatio;
+class SVGAnimationElement;
+}  // namespace dom
+
+class SVGAnimatedPreserveAspectRatio final {
+  friend class AutoChangePreserveAspectRatioNotifier;
+
+ public:
+  void Init() {
+    mBaseVal.mAlign =
+        dom::SVGPreserveAspectRatio_Binding::SVG_PRESERVEASPECTRATIO_XMIDYMID;
+    mBaseVal.mMeetOrSlice =
+        dom::SVGPreserveAspectRatio_Binding::SVG_MEETORSLICE_MEET;
+    mAnimVal = mBaseVal;
+    mIsAnimated = false;
+    mIsBaseSet = false;
+  }
+
+  nsresult SetBaseValueString(const nsAString& aValue,
+                              dom::SVGElement* aSVGElement, bool aDoSetAttr);
+  void GetBaseValueString(nsAString& aValue) const;
+
+  void SetBaseValue(const SVGPreserveAspectRatio& aValue,
+                    dom::SVGElement* aSVGElement);
+  nsresult SetBaseAlign(uint16_t aAlign, dom::SVGElement* aSVGElement) {
+    if (aAlign < SVG_ALIGN_MIN_VALID || aAlign > SVG_ALIGN_MAX_VALID) {
+      return NS_ERROR_FAILURE;
+    }
+    SetBaseValue(SVGPreserveAspectRatio(static_cast<uint8_t>(aAlign),
+                                        mBaseVal.GetMeetOrSlice()),
+                 aSVGElement);
+    return NS_OK;
+  }
+  nsresult SetBaseMeetOrSlice(uint16_t aMeetOrSlice,
+                              dom::SVGElement* aSVGElement) {
+    if (aMeetOrSlice < SVG_MEETORSLICE_MIN_VALID ||
+        aMeetOrSlice > SVG_MEETORSLICE_MAX_VALID) {
+      return NS_ERROR_FAILURE;
+    }
+    SetBaseValue(SVGPreserveAspectRatio(mBaseVal.GetAlign(),
+                                        static_cast<uint8_t>(aMeetOrSlice)),
+                 aSVGElement);
+    return NS_OK;
+  }
+  void SetAnimValue(uint64_t aPackedValue, dom::SVGElement* aSVGElement);
+
+  const SVGPreserveAspectRatio& GetBaseValue() const { return mBaseVal; }
+  const SVGPreserveAspectRatio& GetAnimValue() const { return mAnimVal; }
+  bool IsAnimated() const { return mIsAnimated; }
+  bool IsExplicitlySet() const { return mIsAnimated || mIsBaseSet; }
+
+  already_AddRefed<dom::DOMSVGAnimatedPreserveAspectRatio>
+  ToDOMAnimatedPreserveAspectRatio(dom::SVGElement* aSVGElement);
+  UniquePtr<SMILAttr> ToSMILAttr(dom::SVGElement* aSVGElement);
+
+ private:
+  SVGPreserveAspectRatio mAnimVal;
+  SVGPreserveAspectRatio mBaseVal;
+  bool mIsAnimated;
+  bool mIsBaseSet;
+
+ public:
+  struct SMILPreserveAspectRatio final : public SMILAttr {
+   public:
+    SMILPreserveAspectRatio(SVGAnimatedPreserveAspectRatio* aVal,
+                            dom::SVGElement* aSVGElement)
+        : mVal(aVal), mSVGElement(aSVGElement) {}
+
+    // These will stay alive because a SMILAttr only lives as long
+    // as the Compositing step, and DOM elements don't get a chance to
+    // die during that.
+    SVGAnimatedPreserveAspectRatio* mVal;
+    dom::SVGElement* mSVGElement;
+
+    // SMILAttr methods
+    nsresult ValueFromString(const nsAString& aStr,
+                             const dom::SVGAnimationElement* aSrcElement,
+                             SMILValue& aValue,
+                             bool& aPreventCachingOfSandwich) const override;
+    SMILValue GetBaseValue() const override;
+    void ClearAnimValue() override;
+    nsresult SetAnimValue(const SMILValue& aValue) override;
+  };
+};
+
+namespace dom {
+class DOMSVGAnimatedPreserveAspectRatio final : public nsWrapperCache {
+  ~DOMSVGAnimatedPreserveAspectRatio();
+
+  NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(
+      DOMSVGAnimatedPreserveAspectRatio)
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(
+      DOMSVGAnimatedPreserveAspectRatio)
+
+  DOMSVGAnimatedPreserveAspectRatio(SVGAnimatedPreserveAspectRatio* aVal,
+                                    dom::SVGElement* aSVGElement)
+      : mVal(aVal), mSVGElement(aSVGElement) {}
+
+  // WebIDL
+  dom::SVGElement* GetParentObject() const { return mSVGElement; }
+  virtual JSObject* WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+
+  // These aren't weak refs because new objects are returned each time
+  already_AddRefed<DOMSVGPreserveAspectRatio> BaseVal();
+  already_AddRefed<DOMSVGPreserveAspectRatio> AnimVal();
+
+ protected:
+  // kept alive because it belongs to content:
+  SVGAnimatedPreserveAspectRatio* mVal;
+  RefPtr<dom::SVGElement> mSVGElement;
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // DOM_SVG_SVGANIMATEDPRESERVEASPECTRATIO_H_