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29 #include "wtf/Assertions.h"
30 #include "wtf/MathExtras.h"
36 SMILTime() : m_time(0) { }
37 SMILTime(double time) : m_time(time) { ASSERT(!std::isnan(time)); }
38 SMILTime(const SMILTime& o) : m_time(o.m_time) { }
40 static SMILTime unresolved() { return unresolvedValue; }
41 static SMILTime indefinite() { return indefiniteValue; }
43 SMILTime& operator=(const SMILTime& o) { m_time = o.m_time; return *this; }
44 double value() const { return m_time; }
46 bool isFinite() const { return m_time < indefiniteValue; }
47 bool isIndefinite() const { return m_time == indefiniteValue; }
48 bool isUnresolved() const { return m_time == unresolvedValue; }
51 static const double unresolvedValue;
52 static const double indefiniteValue;
57 class SMILTimeWithOrigin {
65 : m_origin(ParserOrigin)
69 SMILTimeWithOrigin(const SMILTime& time, Origin origin)
75 const SMILTime& time() const { return m_time; }
76 bool originIsScript() const { return m_origin == ScriptOrigin; }
85 SMILInterval(const SMILTime& begin, const SMILTime& end) : begin(begin), end(end) { }
91 inline bool operator==(const SMILTime& a, const SMILTime& b) { return a.isFinite() && a.value() == b.value(); }
92 inline bool operator!(const SMILTime& a) { return !a.isFinite() || !a.value(); }
93 inline bool operator!=(const SMILTime& a, const SMILTime& b) { return !operator==(a, b); }
94 inline bool operator>(const SMILTime& a, const SMILTime& b) { return a.value() > b.value(); }
95 inline bool operator<(const SMILTime& a, const SMILTime& b) { return a.value() < b.value(); }
96 inline bool operator>=(const SMILTime& a, const SMILTime& b) { return a.value() > b.value() || operator==(a, b); }
97 inline bool operator<=(const SMILTime& a, const SMILTime& b) { return a.value() < b.value() || operator==(a, b); }
98 inline bool operator<(const SMILTimeWithOrigin& a, const SMILTimeWithOrigin& b) { return a.time() < b.time(); }
100 SMILTime operator+(const SMILTime&, const SMILTime&);
101 SMILTime operator-(const SMILTime&, const SMILTime&);
102 // So multiplying times does not make too much sense but SMIL defines it for duration * repeatCount
103 SMILTime operator*(const SMILTime&, const SMILTime&);
105 inline bool operator!=(const SMILInterval& a, const SMILInterval& b)
107 // Compare the "raw" values since the operator!= for SMILTime always return
108 // true for non-finite times.
109 return a.begin.value() != b.begin.value() || a.end.value() != b.end.value();