зеркало из https://github.com/mozilla/gecko-dev.git
130 строки
5.5 KiB
C++
130 строки
5.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is the Mozilla SMIL module.
|
|
*
|
|
* The Initial Developer of the Original Code is the Mozilla Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 2009
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Daniel Holbert <dholbert@mozilla.com>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
/* representation of a value for a SMIL-animated CSS property */
|
|
|
|
#ifndef NS_SMILCSSVALUETYPE_H_
|
|
#define NS_SMILCSSVALUETYPE_H_
|
|
|
|
#include "nsISMILType.h"
|
|
#include "nsCSSProperty.h"
|
|
#include "nscore.h" // For NS_OVERRIDE
|
|
|
|
class nsPresContext;
|
|
class nsIContent;
|
|
class nsAString;
|
|
|
|
/*
|
|
* nsSMILCSSValueType: Represents a SMIL-animated CSS value.
|
|
*/
|
|
class nsSMILCSSValueType : public nsISMILType
|
|
{
|
|
public:
|
|
// Singleton for nsSMILValue objects to hold onto.
|
|
static nsSMILCSSValueType sSingleton;
|
|
|
|
protected:
|
|
// nsISMILType Methods
|
|
// -------------------
|
|
NS_OVERRIDE virtual void Init(nsSMILValue& aValue) const;
|
|
NS_OVERRIDE virtual void Destroy(nsSMILValue&) const;
|
|
NS_OVERRIDE virtual nsresult Assign(nsSMILValue& aDest,
|
|
const nsSMILValue& aSrc) const;
|
|
NS_OVERRIDE virtual PRBool IsEqual(const nsSMILValue& aLeft,
|
|
const nsSMILValue& aRight) const;
|
|
NS_OVERRIDE virtual nsresult Add(nsSMILValue& aDest,
|
|
const nsSMILValue& aValueToAdd,
|
|
PRUint32 aCount) const;
|
|
NS_OVERRIDE virtual nsresult ComputeDistance(const nsSMILValue& aFrom,
|
|
const nsSMILValue& aTo,
|
|
double& aDistance) const;
|
|
NS_OVERRIDE virtual nsresult Interpolate(const nsSMILValue& aStartVal,
|
|
const nsSMILValue& aEndVal,
|
|
double aUnitDistance,
|
|
nsSMILValue& aResult) const;
|
|
|
|
public:
|
|
// Helper Methods
|
|
// --------------
|
|
/**
|
|
* Sets up the given nsSMILValue to represent the given string value. The
|
|
* string is interpreted as a value for the given property on the given
|
|
* element.
|
|
*
|
|
* On failure, this method leaves aValue.mType == nsSMILNullType::sSingleton.
|
|
* Otherwise, this method leaves aValue.mType == this class's singleton.
|
|
*
|
|
* @param aPropID The property for which we're parsing a value.
|
|
* @param aTargetElement The target element to whom the property/value
|
|
* setting applies.
|
|
* @param aString The string to be parsed as a CSS value.
|
|
* @param aUseSVGMode A flag to indicate whether we should parse
|
|
* |aString| in SVG mode.
|
|
* @param [out] aValue The nsSMILValue to be populated. Should
|
|
* initially be null-typed.
|
|
* @pre aValue.IsNull()
|
|
* @post aValue.IsNull() || aValue.mType == nsSMILCSSValueType::sSingleton
|
|
*/
|
|
static void ValueFromString(nsCSSProperty aPropID,
|
|
nsIContent* aTargetElement,
|
|
const nsAString& aString,
|
|
PRBool aUseSVGMode,
|
|
nsSMILValue& aValue);
|
|
|
|
/**
|
|
* Creates a string representation of the given nsSMILValue.
|
|
*
|
|
* Note: aValue is expected to be of this type (that is, it's expected to
|
|
* have been initialized by nsSMILCSSValueType::sSingleton). If aValue is a
|
|
* freshly-initialized value, this method will succeed, though the resulting
|
|
* string will be empty.
|
|
*
|
|
* @param aValue The nsSMILValue to be converted into a string.
|
|
* @param [out] aString The string to be populated with the given value.
|
|
* @return PR_TRUE on success, PR_FALSE on failure.
|
|
*/
|
|
static PRBool ValueToString(const nsSMILValue& aValue, nsAString& aString);
|
|
|
|
private:
|
|
// Private constructor & destructor: prevent instances beyond my singleton,
|
|
// and prevent others from deleting my singleton.
|
|
nsSMILCSSValueType() {}
|
|
~nsSMILCSSValueType() {}
|
|
};
|
|
|
|
#endif // NS_SMILCSSVALUETYPE_H_
|