1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is the Mozilla SMIL module.
16 : *
17 : * The Initial Developer of the Original Code is Brian Birtles.
18 : * Portions created by the Initial Developer are Copyright (C) 2009
19 : * the Initial Developer. All Rights Reserved.
20 : *
21 : * Contributor(s):
22 : * Brian Birtles <birtles@gmail.com>
23 : *
24 : * Alternatively, the contents of this file may be used under the terms of
25 : * either of the GNU General Public License Version 2 or later (the "GPL"),
26 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 : * in which case the provisions of the GPL or the LGPL are applicable instead
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33 : * the provisions above, a recipient may use your version of this file under
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35 : *
36 : * ***** END LICENSE BLOCK ***** */
37 :
38 : #include "prtypes.h"
39 : #include "nsDebug.h"
40 : #include <math.h>
41 :
42 : //----------------------------------------------------------------------
43 : // nsSMILRepeatCount
44 : //
45 : // A tri-state non-negative floating point number for representing the number of
46 : // times an animation repeat, i.e. the SMIL repeatCount attribute.
47 : //
48 : // The three states are:
49 : // 1. not-set
50 : // 2. set (with non-negative, non-zero count value)
51 : // 3. indefinite
52 : //
53 : class nsSMILRepeatCount
54 : {
55 : public:
56 0 : nsSMILRepeatCount() : mCount(kNotSet) {}
57 : explicit nsSMILRepeatCount(double aCount)
58 : : mCount(kNotSet) { SetCount(aCount); }
59 :
60 0 : operator double() const { return mCount; }
61 0 : bool IsDefinite() const {
62 0 : return mCount != kNotSet && mCount != kIndefinite;
63 : }
64 0 : bool IsIndefinite() const { return mCount == kIndefinite; }
65 : bool IsSet() const { return mCount != kNotSet; }
66 :
67 0 : nsSMILRepeatCount& operator=(double aCount)
68 : {
69 0 : SetCount(aCount);
70 0 : return *this;
71 : }
72 0 : void SetCount(double aCount)
73 : {
74 0 : NS_ASSERTION(aCount > 0.0, "Negative or zero repeat count");
75 0 : mCount = aCount > 0.0 ? aCount : kNotSet;
76 0 : }
77 0 : void SetIndefinite() { mCount = kIndefinite; }
78 0 : void Unset() { mCount = kNotSet; }
79 :
80 : private:
81 : static const double kNotSet;
82 : static const double kIndefinite;
83 :
84 : double mCount;
85 : };
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