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85 lines
3.0 KiB
C++
85 lines
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Mozilla SMIL module.
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*
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* The Initial Developer of the Original Code is Brian Birtles.
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Brian Birtles <birtles@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "prtypes.h"
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#include "nsDebug.h"
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#include <math.h>
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//----------------------------------------------------------------------
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// nsSMILRepeatCount
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//
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// A tri-state non-negative floating point number for representing the number of
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// times an animation repeat, i.e. the SMIL repeatCount attribute.
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//
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// The three states are:
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// 1. not-set
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// 2. set (with non-negative, non-zero count value)
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// 3. indefinite
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//
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class nsSMILRepeatCount
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{
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public:
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nsSMILRepeatCount() : mCount(kNotSet) {}
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nsSMILRepeatCount(double aCount) : mCount(kNotSet) { SetCount(aCount); }
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operator double() const { return mCount; }
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PRBool IsDefinite() const {
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return mCount != kNotSet && mCount != kIndefinite;
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}
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PRBool IsIndefinite() const { return mCount == kIndefinite; }
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PRBool IsSet() const { return mCount != kNotSet; }
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nsSMILRepeatCount& operator=(double aCount)
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{
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SetCount(aCount);
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return *this;
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}
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void SetCount(double aCount)
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{
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NS_ASSERTION(aCount > 0.0, "Negative or zero repeat count");
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mCount = aCount > 0.0 ? aCount : kNotSet;
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}
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void SetIndefinite() { mCount = kIndefinite; }
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void Unset() { mCount = kNotSet; }
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private:
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static const double kNotSet;
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static const double kIndefinite;
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double mCount;
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};
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