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33bb32f549
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-o -iname "*.h" \
-o -iname "*.c" \
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convert MOZ_OVERRIDE override
convert MOZ_FINAL final
106 lines
4.2 KiB
C++
106 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* representation of a value for a SMIL-animated CSS property */
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#ifndef NS_SMILCSSVALUETYPE_H_
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#define NS_SMILCSSVALUETYPE_H_
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#include "nsISMILType.h"
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#include "nsCSSProperty.h"
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#include "mozilla/Attributes.h"
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class nsAString;
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namespace mozilla {
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namespace dom {
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class Element;
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} // namespace dom
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} // namespace mozilla
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/*
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* nsSMILCSSValueType: Represents a SMIL-animated CSS value.
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*/
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class nsSMILCSSValueType : public nsISMILType
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{
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public:
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typedef mozilla::dom::Element Element;
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// Singleton for nsSMILValue objects to hold onto.
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static nsSMILCSSValueType sSingleton;
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protected:
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// nsISMILType Methods
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// -------------------
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virtual void Init(nsSMILValue& aValue) const override;
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virtual void Destroy(nsSMILValue&) const override;
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virtual nsresult Assign(nsSMILValue& aDest,
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const nsSMILValue& aSrc) const override;
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virtual bool IsEqual(const nsSMILValue& aLeft,
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const nsSMILValue& aRight) const override;
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virtual nsresult Add(nsSMILValue& aDest,
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const nsSMILValue& aValueToAdd,
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uint32_t aCount) const override;
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virtual nsresult ComputeDistance(const nsSMILValue& aFrom,
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const nsSMILValue& aTo,
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double& aDistance) const override;
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virtual nsresult Interpolate(const nsSMILValue& aStartVal,
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const nsSMILValue& aEndVal,
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double aUnitDistance,
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nsSMILValue& aResult) const override;
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public:
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// Helper Methods
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// --------------
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/**
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* Sets up the given nsSMILValue to represent the given string value. The
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* string is interpreted as a value for the given property on the given
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* element.
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*
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* On failure, this method leaves aValue.mType == nsSMILNullType::sSingleton.
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* Otherwise, this method leaves aValue.mType == this class's singleton.
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*
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* @param aPropID The property for which we're parsing a value.
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* @param aTargetElement The target element to whom the property/value
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* setting applies.
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* @param aString The string to be parsed as a CSS value.
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* @param [out] aValue The nsSMILValue to be populated. Should
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* initially be null-typed.
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* @param [out] aIsContextSensitive Set to true if |aString| may produce
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* a different |aValue| depending on other
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* CSS properties on |aTargetElement|
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* or its ancestors (e.g. 'inherit).
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* false otherwise. May be nullptr.
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* Not set if the method fails.
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* @pre aValue.IsNull()
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* @post aValue.IsNull() || aValue.mType == nsSMILCSSValueType::sSingleton
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*/
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static void ValueFromString(nsCSSProperty aPropID,
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Element* aTargetElement,
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const nsAString& aString,
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nsSMILValue& aValue,
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bool* aIsContextSensitive);
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/**
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* Creates a string representation of the given nsSMILValue.
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*
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* Note: aValue is expected to be of this type (that is, it's expected to
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* have been initialized by nsSMILCSSValueType::sSingleton). If aValue is a
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* freshly-initialized value, this method will succeed, though the resulting
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* string will be empty.
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*
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* @param aValue The nsSMILValue to be converted into a string.
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* @param [out] aString The string to be populated with the given value.
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* @return true on success, false on failure.
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*/
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static bool ValueToString(const nsSMILValue& aValue, nsAString& aString);
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private:
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// Private constructor: prevent instances beyond my singleton.
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MOZ_CONSTEXPR nsSMILCSSValueType() {}
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};
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#endif // NS_SMILCSSVALUETYPE_H_
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