• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /*
2  * Copyright (C) 2008 Apple Inc. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  */
25 
26 #ifndef SMILTime_h
27 #define SMILTime_h
28 
29 #if ENABLE(SVG)
30 
31 #include <algorithm>
32 
33 namespace WebCore {
34 
35 class SMILTime {
36 public:
SMILTime()37     SMILTime() : m_time(0) { }
SMILTime(double time)38     SMILTime(double time) : m_time(time) { }
SMILTime(const SMILTime & o)39     SMILTime(const SMILTime& o) : m_time(o.m_time) { }
40 
unresolved()41     static SMILTime unresolved() { return unresolvedValue; }
indefinite()42     static SMILTime indefinite() { return indefiniteValue; }
43 
44     SMILTime& operator=(const SMILTime& o) { m_time = o.m_time; return *this; }
value()45     double value() const { return m_time; }
46 
isFinite()47     bool isFinite() const { return m_time < indefiniteValue; }
isIndefinite()48     bool isIndefinite() const { return m_time == indefiniteValue; }
isUnresolved()49     bool isUnresolved() const { return m_time == unresolvedValue; }
50 
51 private:
52     static const double unresolvedValue;
53     static const double indefiniteValue;
54 
55     double m_time;
56 };
57 
58 inline bool operator==(const SMILTime& a, const SMILTime& b) { return a.isFinite() && a.value() == b.value(); }
59 inline bool operator!(const SMILTime& a) { return !a.isFinite() || !a.value(); }
60 inline bool operator!=(const SMILTime& a, const SMILTime& b) { return !operator==(a, b); }
61 inline bool operator>(const SMILTime& a, const SMILTime& b) { return a.value() > b.value(); }
62 inline bool operator<(const SMILTime& a, const SMILTime& b) { return a.value() < b.value(); }
63 inline bool operator>=(const SMILTime& a, const SMILTime& b) { return a.value() > b.value() || operator==(a, b); }
64 inline bool operator<=(const SMILTime& a, const SMILTime& b) { return a.value() < b.value() || operator==(a, b); }
65 
66 SMILTime operator+(const SMILTime&, const SMILTime&);
67 SMILTime operator-(const SMILTime&, const SMILTime&);
68 // So multiplying times does not make too much sense but SMIL defines it for duration * repeatCount
69 SMILTime operator*(const SMILTime&, const SMILTime&);
70 
71 }
72 
73 #endif // ENABLE(SVG)
74 #endif // SMILTime_h
75