The QBoxSet class represents one item in a box-and-whiskers chart. 更多...
| 头： | #include <QBoxSet> |
| 实例化： | BoxSet |
| 继承： | QObject |
| enum | ValuePositions { LowerExtreme, LowerQuartile, Median, UpperQuartile, UpperExtreme } |
| QBoxSet (const qreal le , const qreal lq , const qreal m , const qreal uq , const qreal ue , const QString label = QString(), QObject * parent = nullptr) | |
| QBoxSet (const QString label = QString(), QObject * parent = nullptr) | |
| virtual | ~QBoxSet () |
| void | append (const qreal value ) |
| void | append (const QList<qreal> & 值 ) |
| qreal | at (const int index ) const |
| QBrush | brush () const |
| void | clear () |
| int | count () const |
| QString | label () const |
| QPen | pen () const |
| void | setBrush (const QBrush & brush ) |
| void | setLabel (const QString label ) |
| void | setPen (const QPen & pen ) |
| void | setValue (const int index , const qreal value ) |
| QBoxSet & | operator<< (const qreal & value ) |
| qreal | operator[] (const int index ) const |
| void | brushChanged () |
| void | cleared () |
| void | clicked () |
| void | doubleClicked () |
| void | hovered (bool status ) |
| void | penChanged () |
| void | pressed () |
| void | released () |
| void | valueChanged (int index ) |
| void | valuesChanged () |
A box-and-whiskers item is a graphical representation of a range and three median values that is constructed from five different values. There are two ways to specify the values. The first one is by using a constructor or stream operator (<<). The values have to be specified in the following order: lower extreme, lower quartile, median, upper quartile, and upper extreme.
The second way is to create an empty QBoxSet instance and specify the values using the setValue () 方法。
见 box-and-whiskers chart example to learn how to create a box-and-whiskers chart.
另请参阅 QBoxPlotSeries .
This enum type defines the values of a box-and-whiskers item:
| 常量 | 值 | 描述 |
|---|---|---|
QBoxSet::LowerExtreme
|
0
|
The smallest value of the box-and-whiskers item. |
QBoxSet::LowerQuartile
|
1
|
The median value of the lower half of the box-and-whiskers item. |
QBoxSet::Median
|
2
|
The median value of the box-and-whiskers item. |
QBoxSet::UpperQuartile
|
3
|
The median value of the upper half of the box-and-whiskers item. |
QBoxSet::UpperExtreme
|
4
|
The largest value of the box-and-whiskers item. |
This property holds the brush used fill the box of the box-and-whiskers item.
访问函数：
| QBrush | brush () const |
| void | setBrush (const QBrush & brush ) |
通知程序信号：
| void | brushChanged () |
This property holds the pen used to draw the lines of the box-and-whiskers item.
访问函数：
| QPen | pen () const |
| void | setPen (const QPen & pen ) |
通知程序信号：
| void | penChanged () |
Constructs a box-and-whiskers item with the following ordered values: le specifies the lower extreme, lq the lower quartile, m the median, uq the upper quartile, and ue the upper quartile. Optionally, the label and parent can be specified.
Constructs a box-and-whiskers item with the optional label label 和父级 parent .
[signal]
void
QBoxSet::
brushChanged
()
This signal is emitted when the brush of the box-and-whiskers item changes.
注意： 通知程序信号对于特性 brush .
另请参阅 brush .
[signal]
void
QBoxSet::
cleared
()
This signal is emitted when all the values of the box-and-whiskers item are set to 0.
[signal]
void
QBoxSet::
clicked
()
This signal is emitted when the user clicks a box-and-whiskers item in the chart.
[signal]
void
QBoxSet::
doubleClicked
()
This signal is emitted when the user double-clicks a box-and-whiskers item.
[signal]
void
QBoxSet::
hovered
(
bool
status
)
This signal is emitted when a mouse is hovered over a box-and-whiskers item in a chart. When the mouse moves over the item,
status
turns
true
, and when the mouse moves away again, it turns
false
.
[signal]
void
QBoxSet::
penChanged
()
This signal is emitted when the pen of the box-and-whiskers item changes.
注意： 通知程序信号对于特性 pen .
另请参阅 pen .
[signal]
void
QBoxSet::
pressed
()
This signal is emitted when the user clicks a box-and-whiskers item in the chart and holds down the mouse button.
[signal]
void
QBoxSet::
released
()
This signal is emitted when the user releases the mouse press on a box-and-whiskers item.
[signal]
void
QBoxSet::
valueChanged
(
int
index
)
This signal is emitted when the value of the box-and-whiskers item specified by index 被修改。
另请参阅 at ().
[signal]
void
QBoxSet::
valuesChanged
()
This signal is emitted when multiple values of the box-and-whiskers item change.
另请参阅 append ().
[虚拟]
QBoxSet::
~QBoxSet
()
Destroys the a box-and-whiskers item.
Appends the new value specified by value to the end of the box-and-whiskers item.
Appends a list of real values specified by 值 to the end of the box-and-whiskers item.
另请参阅 append ().
Returns the value of the box-and-whiskers item specified by index . The index can be specified by using ValuePositions enumeration values. If the index is out of bounds, 0.0 is returned.
Returns the brush used to fill the box-and-whiskers item.
注意： getter 函数对于特性 brush。
另请参阅 setBrush ().
Sets all the values of the box-and-whiskers item to 0.
Returns the number of values appended to the box-and-whiskers item.
Returns the label of the category of the box-and-whiskers item.
另请参阅 setLabel ().
Returns the pen used to draw the box-and-whiskers item.
注意： Getter function for property pen.
另请参阅 setPen ().
Sets the brush used to fill the box-and-whiskers item to brush .
注意： setter 函数对于特性 brush .
另请参阅 brush ().
Sets the label specified by label for the category of the box-and-whiskers item.
另请参阅 label ().
Sets the pen used to draw the box-and-whiskers item to pen .
注意： setter 函数对于特性 pen .
另请参阅 pen ().
Sets the value specified by value in the position specified by index . The index can be specified by using the ValuePositions enumeration values.
A convenience operator for appending the real value specified by value to the end of the box-and-whiskers item.
另请参阅 append ().
Returns the value of the box-and-whiskers item specified by index . The index can be specified by using ValuePositions enumeration values. If the index is out of bounds, 0.0 is returned.