KDE API ReferenceKCalCore Library
#include <duration.h>
Public Types | |
| enum | Type { Seconds, Days } |
Public Member Functions | |
| Duration () | |
| Duration (const KDateTime &start, const KDateTime &end) | |
| Duration (const KDateTime &start, const KDateTime &end, Type type) | |
| Duration (int duration, Type type=Seconds) | |
| Duration (const Duration &duration) | |
| ~Duration () | |
| int | asDays () const |
| int | asSeconds () const |
| KDateTime | end (const KDateTime &start) const |
| bool | isDaily () const |
| operator bool () const | |
| bool | operator! () const |
| bool | operator!= (const Duration &other) const |
| Duration | operator* (int value) const |
| Duration & | operator*= (int value) |
| Duration | operator+ (const Duration &other) const |
| Duration & | operator+= (const Duration &other) |
| Duration | operator- () const |
| Duration | operator- (const Duration &other) const |
| Duration & | operator-= (const Duration &other) |
| Duration | operator/ (int value) const |
| Duration & | operator/= (int value) |
| bool | operator< (const Duration &other) const |
| bool | operator<= (const Duration &other) const |
| Duration & | operator= (const Duration &duration) |
| bool | operator== (const Duration &other) const |
| bool | operator> (const Duration &other) const |
| bool | operator>= (const Duration &other) const |
| Type | type () const |
| int | value () const |
Friends | |
| KCALCORE_EXPORT QDataStream & | operator<< (QDataStream &s, const KCalCore::Duration &) |
| KCALCORE_EXPORT QDataStream & | operator>> (QDataStream &s, KCalCore::Duration &) |
Detailed Description
Represents a span of time measured in seconds or days.
A duration is a span of time measured in seconds or days. Construction can be done by specifying a stop and end time, or simply by specifying the number of seconds or days.
Much of the time, it does not matter whether a duration is specified in seconds or in days. But it does make a difference when a duration is used to define a time period encompassing a daylight saving time change.
Definition at line 55 of file duration.h.
Member Enumeration Documentation
The unit of time used to define the duration.
| Enumerator | |
|---|---|
| Seconds |
duration is a number of seconds |
| Days |
duration is a number of days |
Definition at line 61 of file duration.h.
Constructor & Destructor Documentation
| Duration::Duration | ( | ) |
Constructs a duration of 0 seconds.
Private class that helps to provide binary compatibility between releases.
Definition at line 56 of file duration.cpp.
| Duration::Duration | ( | const KDateTime & | start, |
| const KDateTime & | end | ||
| ) |
Constructs a duration from start to end.
If the time of day in start and end is equal, and their time specifications (i.e. time zone etc.) are the same, the duration will be set in terms of days. Otherwise, the duration will be set in terms of seconds.
- Parameters
-
start is the time the duration begins. end is the time the duration ends.
Definition at line 61 of file duration.cpp.
| Duration::Duration | ( | const KDateTime & | start, |
| const KDateTime & | end, | ||
| Type | type | ||
| ) |
Constructs a duration from start to end.
If type is Days, and the time of day in start's time zone differs between start and end, the duration will be rounded down to the nearest whole number of days.
- Parameters
-
start is the time the duration begins. end is the time the duration ends. type the unit of time to use (seconds or days)
Definition at line 73 of file duration.cpp.
Constructs a duration with a number of seconds or days.
- Parameters
-
duration the number of seconds or days in the duration type the unit of time to use (seconds or days)
Definition at line 98 of file duration.cpp.
| Duration::Duration | ( | const Duration & | duration | ) |
Constructs a duration by copying another duration object.
- Parameters
-
duration is the duration to copy.
Definition at line 105 of file duration.cpp.
| Duration::~Duration | ( | ) |
Destroys a duration.
Definition at line 110 of file duration.cpp.
Member Function Documentation
| int Duration::asDays | ( | ) | const |
Returns the length of the duration in days.
If the duration is not an exact number of days, it is rounded down to return the number of whole days.
Definition at line 205 of file duration.cpp.
| int Duration::asSeconds | ( | ) | const |
Returns the length of the duration in seconds.
Definition at line 200 of file duration.cpp.
| KDateTime Duration::end | ( | const KDateTime & | start | ) | const |
Computes a duration end time by adding the number of seconds or days in the duration to the specified start time.
- Parameters
-
start is the start time.
- Returns
- end time.
Definition at line 184 of file duration.cpp.
| bool Duration::isDaily | ( | ) | const |
Returns whether the duration is specified in terms of days rather than seconds.
Definition at line 195 of file duration.cpp.
| Duration::operator bool | ( | ) | const |
Returns true if this duration is non-zero.
Definition at line 126 of file duration.cpp.
|
inline |
Returns true if this duration is zero.
Definition at line 133 of file duration.h.
|
inline |
Returns true if this duration is not equal to the other.
Daily and non-daily durations are always considered unequal, since a day's duration may differ from 24 hours if it happens to span a daylight saving time change.
- Parameters
-
other is the other duration to compare.
Definition at line 186 of file duration.h.
|
inline |
Multiplies a duration by a value.
- Parameters
-
value value to multiply by
- Returns
- resultant duration
Definition at line 251 of file duration.h.
| Duration & Duration::operator*= | ( | int | value | ) |
Multiplies this duration by a value.
- Parameters
-
value value to multiply by
Definition at line 172 of file duration.cpp.
Adds two durations.
If one is in terms of days and the other in terms of seconds, the result is in terms of seconds.
- Parameters
-
other the other duration to add
- Returns
- combined duration
Definition at line 207 of file duration.h.
Adds another duration to this one.
If one is in terms of days and the other in terms of seconds, the result is in terms of seconds.
- Parameters
-
other the other duration to add
Definition at line 149 of file duration.cpp.
| Duration Duration::operator- | ( | ) | const |
Returns the negative of this duration.
Definition at line 162 of file duration.cpp.
Returns the difference between another duration and this.
If one is in terms of days and the other in terms of seconds, the result is in terms of seconds.
- Parameters
-
other the other duration to subtract
- Returns
- difference in durations
Definition at line 234 of file duration.h.
Subtracts another duration from this one.
If one is in terms of days and the other in terms of seconds, the result is in terms of seconds.
- Parameters
-
other the other duration to subtract
Definition at line 167 of file duration.cpp.
|
inline |
Divides a duration by a value.
- Parameters
-
value value to divide by
- Returns
- resultant duration
Definition at line 268 of file duration.h.
| Duration & Duration::operator/= | ( | int | value | ) |
Divides this duration by a value.
- Parameters
-
value value to divide by
Definition at line 178 of file duration.cpp.
| bool Duration::operator< | ( | const Duration & | other | ) | const |
Returns true if this duration is smaller than the other.
- Parameters
-
other is the other duration to compare.
Definition at line 131 of file duration.cpp.
|
inline |
Returns true if this duration is smaller than or equal to the other.
- Parameters
-
other is the other duration to compare.
Definition at line 147 of file duration.h.
Sets this duration equal to duration.
- Parameters
-
duration is the duration to copy.
Definition at line 115 of file duration.cpp.
| bool Duration::operator== | ( | const Duration & | other | ) | const |
Returns true if this duration is equal to the other.
Daily and non-daily durations are always considered unequal, since a day's duration may differ from 24 hours if it happens to span a daylight saving time change.
- Parameters
-
other the other duration to compare
Definition at line 140 of file duration.cpp.
|
inline |
Returns true if this duration is greater than the other.
- Parameters
-
other is the other duration to compare.
Definition at line 156 of file duration.h.
|
inline |
Returns true if this duration is greater than or equal to the other.
- Parameters
-
other is the other duration to compare.
Definition at line 165 of file duration.h.
| Duration::Type Duration::type | ( | ) | const |
Returns the time units (seconds or days) used to specify the duration.
Definition at line 190 of file duration.cpp.
| int Duration::value | ( | ) | const |
Returns the length of the duration in seconds or days.
- Returns
- if isDaily(), duration in days, else duration in seconds
Definition at line 210 of file duration.cpp.
Friends And Related Function Documentation
|
friend |
Duration serializer.
- Since
- 4.12
|
friend |
Duration deserializer.
- Since
- 4.12
The documentation for this class was generated from the following files:
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