summaryrefslogtreecommitdiffstats
path: root/dom/svg/SVGAnimatedNumber.h
diff options
context:
space:
mode:
Diffstat (limited to 'dom/svg/SVGAnimatedNumber.h')
-rw-r--r--dom/svg/SVGAnimatedNumber.h113
1 files changed, 113 insertions, 0 deletions
diff --git a/dom/svg/SVGAnimatedNumber.h b/dom/svg/SVGAnimatedNumber.h
new file mode 100644
index 0000000000..29ddfca618
--- /dev/null
+++ b/dom/svg/SVGAnimatedNumber.h
@@ -0,0 +1,113 @@
+/* -*- 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_SVGANIMATEDNUMBER_H_
+#define DOM_SVG_SVGANIMATEDNUMBER_H_
+
+#include "nsCycleCollectionParticipant.h"
+#include "nsError.h"
+#include "nsMathUtils.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/FloatingPoint.h"
+#include "mozilla/SMILAttr.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/dom/DOMSVGAnimatedNumber.h"
+#include "mozilla/dom/SVGElement.h"
+
+namespace mozilla {
+
+class SMILValue;
+
+namespace dom {
+class SVGAnimationElement;
+} // namespace dom
+
+class SVGAnimatedNumber {
+ public:
+ friend class AutoChangeNumberNotifier;
+ using SVGElement = dom::SVGElement;
+
+ void Init(uint8_t aAttrEnum = 0xff, float aValue = 0) {
+ mAnimVal = mBaseVal = aValue;
+ mAttrEnum = aAttrEnum;
+ mIsAnimated = false;
+ mIsBaseSet = false;
+ }
+
+ nsresult SetBaseValueString(const nsAString& aValue, SVGElement* aSVGElement);
+ void GetBaseValueString(nsAString& aValue);
+
+ void SetBaseValue(float aValue, SVGElement* aSVGElement);
+ float GetBaseValue() const { return mBaseVal; }
+ void SetAnimValue(float aValue, SVGElement* aSVGElement);
+ float GetAnimValue() const { return mAnimVal; }
+
+ // Returns true if the animated value of this number has been explicitly
+ // set (either by animation, or by taking on the base value which has been
+ // explicitly set by markup or a DOM call), false otherwise.
+ // If this returns false, the animated value is still valid, that is,
+ // usable, and represents the default base value of the attribute.
+ bool IsExplicitlySet() const { return mIsAnimated || mIsBaseSet; }
+
+ already_AddRefed<dom::DOMSVGAnimatedNumber> ToDOMAnimatedNumber(
+ SVGElement* aSVGElement);
+ UniquePtr<SMILAttr> ToSMILAttr(SVGElement* aSVGElement);
+
+ private:
+ float mAnimVal;
+ float mBaseVal;
+ uint8_t mAttrEnum; // element specified tracking for attribute
+ bool mIsAnimated;
+ bool mIsBaseSet;
+
+ public:
+ // DOM wrapper class for the (DOM)SVGAnimatedNumber interface where the
+ // wrapped class is SVGAnimatedNumber.
+ struct DOMAnimatedNumber final : public dom::DOMSVGAnimatedNumber {
+ DOMAnimatedNumber(SVGAnimatedNumber* aVal, SVGElement* aSVGElement)
+ : dom::DOMSVGAnimatedNumber(aSVGElement), mVal(aVal) {}
+ virtual ~DOMAnimatedNumber();
+
+ SVGAnimatedNumber* mVal; // kept alive because it belongs to content
+
+ float BaseVal() override { return mVal->GetBaseValue(); }
+ void SetBaseVal(float aValue) override {
+ MOZ_ASSERT(std::isfinite(aValue));
+ mVal->SetBaseValue(aValue, mSVGElement);
+ }
+
+ // Script may have modified animation parameters or timeline -- DOM getters
+ // need to flush any resample requests to reflect these modifications.
+ float AnimVal() override {
+ mSVGElement->FlushAnimations();
+ return mVal->GetAnimValue();
+ }
+ };
+
+ struct SMILNumber : public SMILAttr {
+ public:
+ SMILNumber(SVGAnimatedNumber* aVal, 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.
+ SVGAnimatedNumber* mVal;
+ SVGElement* mSVGElement;
+
+ // SMILAttr methods
+ virtual 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 mozilla
+
+#endif // DOM_SVG_SVGANIMATEDNUMBER_H_