QHPieModelMapper 是用于饼图系列的水平模型映射器。 更多...
头: | #include <QHPieModelMapper> |
实例化: | HPieModelMapper |
继承: | QPieModelMapper |
|
QHPieModelMapper (QObject * parent = nullptr) | |
int | columnCount () const |
int | firstColumn () const |
int | labelsRow () const |
QAbstractItemModel * | model () const |
QPieSeries * | series () const |
void | setColumnCount (int columnCount ) |
void | setFirstColumn (int firstColumn ) |
void | setLabelsRow (int labelsRow ) |
void | setModel (QAbstractItemModel * model ) |
void | setSeries (QPieSeries * series ) |
void | setValuesRow (int valuesRow ) |
int | valuesRow () const |
void | columnCountChanged () |
void | firstColumnChanged () |
void | labelsRowChanged () |
void | modelReplaced () |
void | seriesReplaced () |
void | valuesRowChanged () |
模型映射器允许使用的数据模型派生自 QAbstractItemModel class as a data source for a chart. A horizontal model mapper is used to create a connection between a data model and QPieSeries , so that each column in the data model defines a pie slice and each row maps to the label or the value of the pie slice.
Both model and pie series properties can be used to manipulate the data. The model mapper keeps the pie series and the data model in sync.
This property holds the number of columns of the model that are mapped as the data for the pie series.
The minimum and default value is -1 (number limited to the number of columns in the model).
访问函数:
int | columnCount () const |
void | setColumnCount (int columnCount ) |
通知程序信号:
void | columnCountChanged () |
This property holds the column of the model that contains the first slice value.
最小且默认值为 0。
访问函数:
int | firstColumn () const |
void | setFirstColumn (int firstColumn ) |
通知程序信号:
void | firstColumnChanged () |
This property holds the row of the model that is kept in sync with the labels of the pie's slices.
默认值为 -1 (无效映射)。
访问函数:
int | labelsRow () const |
void | setLabelsRow (int labelsRow ) |
通知程序信号:
void | labelsRowChanged () |
此特性保持映射器使用的模型。
访问函数:
QAbstractItemModel * | model () const |
void | setModel (QAbstractItemModel * model ) |
通知程序信号:
void | modelReplaced () |
This property holds the pie series that is used by the mapper.
All the data in the series is discarded when it is set to the mapper. When a new series is specified, the old series is disconnected (but it preserves its data).
访问函数:
QPieSeries * | series () const |
void | setSeries (QPieSeries * series ) |
通知程序信号:
void | seriesReplaced () |
This property holds the row of the model that is kept in sync with the values of the pie's slices.
默认值为 -1 (无效映射)。
访问函数:
int | valuesRow () const |
void | setValuesRow (int valuesRow ) |
通知程序信号:
void | valuesRowChanged () |
构造映射器对象为子级化 parent .
[signal]
void
QHPieModelMapper::
columnCountChanged
()
This signal is emitted when the number of columns changes.
注意: 通知程序信号对于特性 columnCount .
[signal]
void
QHPieModelMapper::
firstColumnChanged
()
This signal is emitted when the first column changes.
注意: 通知程序信号对于特性 firstColumn .
[signal]
void
QHPieModelMapper::
labelsRowChanged
()
This signal is emitted when the labels row changes.
注意: 通知程序信号对于特性 labelsRow .
[signal]
void
QHPieModelMapper::
modelReplaced
()
This signal is emitted when the model that the mapper is connected to changes.
注意: 通知程序信号对于特性 model .
[signal]
void
QHPieModelMapper::
seriesReplaced
()
This signal is emitted when the series that the mapper is connected to changes.
注意: 通知程序信号对于特性 series .
[signal]
void
QHPieModelMapper::
valuesRowChanged
()
This signal is emitted when the values row changes.
注意: 通知程序信号对于特性 valuesRow .
Returns the row of the model that is kept in sync with the labels of the pie's slices.
注意: Getter function for property labelsRow.
另请参阅 setLabelsRow ().
Sets the model row that is kept in sync with the pie slices' labels to labelsRow .
注意: setter 函数对于特性 labelsRow .
另请参阅 labelsRow ().
Sets the model row that is kept in sync with the pie slices' values to valuesRow .
注意: setter 函数对于特性 valuesRow .
另请参阅 valuesRow ().
Returns the row of the model that is kept in sync with the values of the pie's slices.
注意: getter 函数对于特性 valuesRow。
另请参阅 setValuesRow ().