用于烛台系列的抽象模型映射器类。 更多...
头: | #include <QCandlestickModelMapper> |
继承: | QObject |
继承者: |
QCandlestickModelMapper (QObject * parent = nullptr) | |
QAbstractItemModel * | model () const |
virtual Qt::Orientation | orientation () const = 0 |
QCandlestickSeries * | series () const |
void | setModel (QAbstractItemModel * model ) |
void | setSeries (QCandlestickSeries * series ) |
void | modelReplaced () |
void | seriesReplaced () |
int | close () const |
int | firstSetSection () const |
int | high () const |
int | lastSetSection () const |
int | low () const |
int | open () const |
void | setClose (int close ) |
void | setFirstSetSection (int firstSetSection ) |
void | setHigh (int high ) |
void | setLastSetSection (int lastSetSection ) |
void | setLow (int low ) |
void | setOpen (int open ) |
void | setTimestamp (int timestamp ) |
int | timestamp () const |
模型映射器允许用于 QAbstractItemModel -derived model as a data source for a chart series, creating a connection between a QCandlestickSeries and the model object. A model mapper maintains an equal size across all QCandlestickSets .
注意: The model used must support adding and removing rows/columns and modifying the data of the cells.
定义映射器使用的模型。
访问函数:
QAbstractItemModel * | model () const |
void | setModel (QAbstractItemModel * model ) |
通知程序信号:
void | modelReplaced () |
定义 QCandlestickSeries object that is used by the mapper.
注意: All data in the series is discarded when it is set to the mapper. When a new series is specified, the old series is disconnected (preserving its data).
访问函数:
QCandlestickSeries * | series () const |
void | setSeries (QCandlestickSeries * series ) |
通知程序信号:
void | seriesReplaced () |
[explicit]
QCandlestickModelMapper::
QCandlestickModelMapper
(
QObject
*
parent
= nullptr)
Constructs a model mapper object as a child of parent .
[protected]
int
QCandlestickModelMapper::
close
() const
Returns the row/column of the model that contains the close values of the sets in the series. Default value is -1 (invalid mapping).
另请参阅 setClose ().
[protected]
int
QCandlestickModelMapper::
firstSetSection
() const
Returns the section of the model that is used as the data source for the first candlestick set. Default value is -1 (invalid mapping).
另请参阅 setFirstSetSection ().
[protected]
int
QCandlestickModelMapper::
high
() const
Returns the row/column of the model that contains the high values of the sets in the series. Default value is -1 (invalid mapping).
另请参阅 setHigh ().
[protected]
int
QCandlestickModelMapper::
lastSetSection
() const
Returns the section of the model that is used as the data source for the last candlestick set. Default value is -1 (invalid mapping).
另请参阅 setLastSetSection ().
[protected]
int
QCandlestickModelMapper::
low
() const
Returns the row/column of the model that contains the low values of the sets in the series. Default value is -1 (invalid mapping).
另请参阅 setLow ().
[signal]
void
QCandlestickModelMapper::
modelReplaced
()
Emitted when the model, to which the mapper is connected, has changed.
注意: 通知程序信号对于特性 model .
另请参阅 model .
[protected]
int
QCandlestickModelMapper::
open
() const
Returns the row/column of the model that contains the open values of the sets in the series. Default value is -1 (invalid mapping).
另请参阅 setOpen ().
[pure virtual]
Qt::Orientation
QCandlestickModelMapper::
orientation
() const
Returns the orientation that is used when QCandlestickModelMapper accesses the model. This determines whether the consecutive values of the set are read from rows ( Qt::Horizontal ) or from columns ( Qt::Vertical ).
[signal]
void
QCandlestickModelMapper::
seriesReplaced
()
Emitted when the series to which mapper is connected to has changed.
注意: 通知程序信号对于特性 series .
另请参阅 series .
[protected]
void
QCandlestickModelMapper::
setClose
(
int
close
)
Sets the row/column of the model that contains the close values of the sets in the series. Default value is -1 (invalid mapping).
另请参阅 close ().
[protected]
void
QCandlestickModelMapper::
setFirstSetSection
(
int
firstSetSection
)
Sets the section of the model that is used as the data source for the first candlestick set. Parameter firstSetSection specifies the section of the model. Default value is -1.
另请参阅 firstSetSection ().
[protected]
void
QCandlestickModelMapper::
setHigh
(
int
high
)
Sets the row/column of the model that contains the high values of the sets in the series. Default value is -1 (invalid mapping).
另请参阅 high ().
[protected]
void
QCandlestickModelMapper::
setLastSetSection
(
int
lastSetSection
)
Sets the section of the model that is used as the data source for the last candlestick set. Parameter lastSetSection specifies the section of the model. Default value is -1.
另请参阅 lastSetSection ().
[protected]
void
QCandlestickModelMapper::
setLow
(
int
low
)
Sets the row/column of the model that contains the low values of the sets in the series. Default value is -1 (invalid mapping).
另请参阅 low ().
[protected]
void
QCandlestickModelMapper::
setOpen
(
int
open
)
Sets the row/column of the model that contains the open values of the sets in the series. Default value is -1 (invalid mapping).
另请参阅 open ().
[protected]
void
QCandlestickModelMapper::
setTimestamp
(
int
timestamp
)
Sets the row/column of the model that contains the timestamp values of the sets in the series. Default value is -1 (invalid mapping).
另请参阅 timestamp ().
[protected]
int
QCandlestickModelMapper::
timestamp
() const
Returns the row/column of the model that contains the timestamp values of the sets in the series. Default value is -1 (invalid mapping).
另请参阅 setTimestamp ().