QMediaTimeRange class represents a set of zero or more disjoint time intervals. 更多...
| 头： | #include <QMediaTimeRange> |
| qmake: | QT += multimedia |
注意： 此类的所有函数 可重入 .
| QMediaTimeRange () | |
| QMediaTimeRange (qint64 start , qint64 end ) | |
| QMediaTimeRange (const QMediaTimeInterval & interval ) | |
| QMediaTimeRange (const QMediaTimeRange & range ) | |
| ~QMediaTimeRange () | |
| void | addInterval (const QMediaTimeInterval & interval ) |
| void | addInterval (qint64 start , qint64 end ) |
| void | addTimeRange (const QMediaTimeRange & range ) |
| void | clear () |
| bool | contains (qint64 time ) const |
| qint64 | earliestTime () const |
| QList<QMediaTimeInterval> | intervals () const |
| bool | isContinuous () const |
| bool | isEmpty () const |
| qint64 | latestTime () const |
| void | removeInterval (const QMediaTimeInterval & interval ) |
| void | removeInterval (qint64 start , qint64 end ) |
| void | removeTimeRange (const QMediaTimeRange & range ) |
| QMediaTimeRange & | operator+= (const QMediaTimeRange & other ) |
| QMediaTimeRange & | operator+= (const QMediaTimeInterval & interval ) |
| QMediaTimeRange & | operator-= (const QMediaTimeRange & other ) |
| QMediaTimeRange & | operator-= (const QMediaTimeInterval & interval ) |
| QMediaTimeRange & | operator= (const QMediaTimeRange & other ) |
| QMediaTimeRange & | operator= (const QMediaTimeInterval & interval ) |
| bool | operator!= (const QMediaTimeInterval & a , const QMediaTimeInterval & b ) |
| bool | operator!= (const QMediaTimeRange & a , const QMediaTimeRange & b ) |
| QMediaTimeRange | operator+ (const QMediaTimeRange & r1 , const QMediaTimeRange & r2 ) |
| QMediaTimeRange | operator- (const QMediaTimeRange & r1 , const QMediaTimeRange & r2 ) |
| bool | operator== (const QMediaTimeInterval & a , const QMediaTimeInterval & b ) |
| bool | operator== (const QMediaTimeRange & a , const QMediaTimeRange & b ) |
QMediaTimeRange class represents a set of zero or more disjoint time intervals.
earliestTime (), latestTime (), intervals () 和 isEmpty () methods are used to get information about the current time range.
addInterval (), removeInterval () 和 clear () methods are used to modify the current time range.
When adding or removing intervals from the time range, existing intervals within the range may be expanded, trimmed, deleted, merged or split to ensure that all intervals within the time range remain distinct and disjoint. As a consequence, all intervals added or removed from a time range must be normal .
另请参阅 QMediaTimeInterval .
Constructs an empty time range.
Constructs a time range that contains an initial interval from start to end 包含在内。
If the interval is not normal , the resulting time range will be empty.
另请参阅 addInterval ().
Constructs a time range that contains an initial interval, interval .
若 interval 不是 normal , the resulting time range will be empty.
另请参阅 addInterval ().
Constructs a time range by copying another time range .
析构函数。
Adds the specified interval to the time range.
Adding intervals which are not normal is invalid, and will be ignored.
If the specified interval is adjacent to, or overlaps existing intervals within the time range, these intervals will be merged.
This operation takes linear time.
另请参阅 removeInterval ().
这是重载函数。
Adds the interval specified by start and end to the time range.
另请参阅 addInterval ().
Adds each of the intervals in range to this time range.
相当于调用 addInterval () for each interval in range .
Removes all intervals from the time range.
另请参阅 removeInterval ().
返回 true 若指定 time lies within the time range.
Returns the earliest time within the time range.
For empty time ranges, this value is equal to zero.
另请参阅 latestTime ().
Returns the list of intervals covered by this time range.
Returns true if the time range consists of a continuous interval. That is, there is one or fewer disjoint intervals within the time range.
Returns true if there are no intervals within the time range.
另请参阅 intervals ().
Returns the latest time within the time range.
For empty time ranges, this value is equal to zero.
另请参阅 earliestTime ().
移除指定 interval from the time range.
Removing intervals which are not normal is invalid, and will be ignored.
Intervals within the time range will be trimmed, split or deleted such that no intervals within the time range include any part of the target interval.
This operation takes linear time.
另请参阅 addInterval ().
这是重载函数。
Removes the interval specified by start and end from the time range.
另请参阅 removeInterval ().
Removes each of the intervals in range from this time range.
相当于调用 removeInterval () for each interval in range .
Adds each interval in other to the time range and returns the result.
Adds the specified interval to the time range and returns the result.
Removes each interval in other from the time range and returns the result.
移除指定 interval from the time range and returns the result.
Takes a copy of the other time range and returns itself.
Sets the time range to a single continuous interval, interval .
返回 true 若 a is not exactly equal to b .
Returns true if one or more intervals in a are not present in b .
Returns a time range containing the union between r1 and r2 .
Returns a time range containing r2 subtracted from r1 .
返回 true 若 a is exactly equal to b .
Returns true if all intervals in a are present in b .
