The QXYSeries class is a base class for line, spline, and scatter series. 更多...
头: | #include <QXYSeries> |
实例化: | XYSeries |
继承: | QAbstractSeries |
继承者: |
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virtual | ~QXYSeries () |
void | append (qreal x , qreal y ) |
void | append (const QPointF & point ) |
void | append (const QList<QPointF> & points ) |
const QPointF & | at (int index ) const |
QBrush | brush () const |
void | clear () |
virtual QColor | color () const |
int | count () const |
void | insert (int index , const QPointF & point ) |
QPen | pen () const |
bool | pointLabelsClipping () const |
QColor | pointLabelsColor () const |
QFont | pointLabelsFont () const |
QString | pointLabelsFormat () const |
bool | pointLabelsVisible () const |
QList<QPointF> | points () const |
QVector<QPointF> | pointsVector () const |
bool | pointsVisible () const |
void | remove (qreal x , qreal y ) |
void | remove (const QPointF & point ) |
void | remove (int index ) |
void | removePoints (int index , int count ) |
void | replace (qreal oldX , qreal oldY , qreal newX , qreal newY ) |
void | replace (const QPointF & oldPoint , const QPointF & newPoint ) |
void | replace (int index , qreal newX , qreal newY ) |
void | replace (int index , const QPointF & newPoint ) |
void | replace (QList<QPointF> points ) |
void | replace (QVector<QPointF> points ) |
virtual void | setBrush (const QBrush & brush ) |
virtual void | setColor (const QColor & color ) |
virtual void | setPen (const QPen & pen ) |
void | setPointLabelsClipping (bool enabled = true) |
void | setPointLabelsColor (const QColor & color ) |
void | setPointLabelsFont (const QFont & font ) |
void | setPointLabelsFormat (const QString & format ) |
void | setPointLabelsVisible (bool visible = true) |
void | setPointsVisible (bool visible = true) |
QXYSeries & | operator<< (const QPointF & point ) |
QXYSeries & | operator<< (const QList<QPointF> & points ) |
void | clicked (const QPointF & point ) |
void | colorChanged (QColor color ) |
void | doubleClicked (const QPointF & point ) |
void | hovered (const QPointF & point , bool state ) |
void | penChanged (const QPen & pen ) |
void | pointAdded (int index ) |
void | pointLabelsClippingChanged (bool clipping ) |
void | pointLabelsColorChanged (const QColor & color ) |
void | pointLabelsFontChanged (const QFont & font ) |
void | pointLabelsFormatChanged (const QString & format ) |
void | pointLabelsVisibilityChanged (bool visible ) |
void | pointRemoved (int index ) |
void | pointReplaced (int index ) |
void | pointsRemoved (int index , int count ) |
void | pointsReplaced () |
void | pressed (const QPointF & point ) |
void | released (const QPointF & point ) |
此特性保持系列的颜色。
This is the line (pen) color in case of QLineSeries or QSplineSeries and the fill (brush) color in case of QScatterSeries or QAreaSeries .
访问函数:
virtual QColor | color () const |
virtual void | setColor (const QColor & color ) |
通知程序信号:
void | colorChanged (QColor color ) |
This property holds the clipping for data point labels.
此特性是
true
by default. The labels on the edge of the plot area are cut when clipping is enabled.
访问函数:
bool | pointLabelsClipping () const |
void | setPointLabelsClipping (bool enabled = true) |
通知程序信号:
void | pointLabelsClippingChanged (bool clipping ) |
另请参阅 pointLabelsVisible .
This property holds the color used for data point labels. By default, the color is the color of the brush defined in theme for labels.
访问函数:
QColor | pointLabelsColor () const |
void | setPointLabelsColor (const QColor & color ) |
通知程序信号:
void | pointLabelsColorChanged (const QColor & color ) |
另请参阅 pointLabelsFormat .
This property holds the font used for data point labels.
访问函数:
QFont | pointLabelsFont () const |
void | setPointLabelsFont (const QFont & font ) |
通知程序信号:
void | pointLabelsFontChanged (const QFont & font ) |
另请参阅 pointLabelsFormat .
This property holds the format used for showing labels with data points.
QXYSeries supports the following format tags:
@xPoint | The x-coordinate of the data point. |
@yPoint | The y-coordinate of the data point. |
For example, the following usage of the format tags would produce labels that display the data point shown inside brackets separated by a comma (x, y):
series->setPointLabelsFormat("(@xPoint, @yPoint)");
By default, the labels' format is set to
@xPoint, @yPoint
. The labels are shown on the plot area, and the labels on the edge of the plot area are cut. If the points are close to each other, the labels may overlap.
访问函数:
QString | pointLabelsFormat () const |
void | setPointLabelsFormat (const QString & format ) |
通知程序信号:
void | pointLabelsFormatChanged (const QString & format ) |
另请参阅 pointLabelsVisible , pointLabelsFont ,和 pointLabelsColor .
此特性保持数据点标签的可见性。
此特性是
false
在默认情况下。
访问函数:
bool | pointLabelsVisible () const |
void | setPointLabelsVisible (bool visible = true) |
通知程序信号:
void | pointLabelsVisibilityChanged (bool visible ) |
另请参阅 pointLabelsFormat and pointLabelsClipping .
This property holds whether the data points are visible and should be drawn.
访问函数:
bool | pointsVisible () const |
void | setPointsVisible (bool visible = true) |
[signal]
void
QXYSeries::
clicked
(const
QPointF
&
point
)
This signal is emitted when the user triggers a mouse event by clicking the point point in the chart.
另请参阅 pressed (), released (),和 doubleClicked ().
[signal]
void
QXYSeries::
colorChanged
(
QColor
color
)
This signal is emitted when the line (pen) color changes to color .
注意: 通知程序信号对于特性 color .
[signal]
void
QXYSeries::
doubleClicked
(const
QPointF
&
point
)
This signal is emitted when the user double-clicks the data point point in the chart. The point is the point where the first press was triggered.
另请参阅 pressed (), released (),和 clicked ().
[signal]
void
QXYSeries::
hovered
(const
QPointF
&
point
,
bool
state
)
This signal is emitted when a mouse is hovered over the point
point
in the chart. When the mouse moves over the point,
state
turns
true
, and when the mouse moves away again, it turns
false
.
[signal]
void
QXYSeries::
penChanged
(const
QPen
&
pen
)
此信号被发射当钢笔更改为 pen .
[signal]
void
QXYSeries::
pointAdded
(
int
index
)
This signal is emitted when a point is added at the position specified by index .
[signal]
void
QXYSeries::
pointLabelsClippingChanged
(
bool
clipping
)
This signal is emitted when the clipping of the data point labels changes to clipping .
注意: 通知程序信号对于特性 pointLabelsClipping .
[signal]
void
QXYSeries::
pointLabelsColorChanged
(const
QColor
&
color
)
This signal is emitted when the color used for data point labels changes to color .
注意: 通知程序信号对于特性 pointLabelsColor .
[signal]
void
QXYSeries::
pointLabelsFontChanged
(const
QFont
&
font
)
This signal is emitted when the font used for data point labels changes to font .
注意: 通知程序信号对于特性 pointLabelsFont .
[signal]
void
QXYSeries::
pointLabelsFormatChanged
(const
QString
&
format
)
This signal is emitted when the format of data point labels changes to format .
注意: 通知程序信号对于特性 pointLabelsFormat .
[signal]
void
QXYSeries::
pointLabelsVisibilityChanged
(
bool
visible
)
This signal is emitted when the visibility of the data point labels changes to visible .
注意: 通知程序信号对于特性 pointLabelsVisible .
[signal]
void
QXYSeries::
pointRemoved
(
int
index
)
This signal is emitted when a point is removed from the position specified by index .
另请参阅 remove ().
[signal]
void
QXYSeries::
pointReplaced
(
int
index
)
This signal is emitted when a point is replaced at the position specified by index .
另请参阅 replace ().
[signal]
void
QXYSeries::
pointsRemoved
(
int
index
,
int
count
)
This signal is emitted when the number of points specified by count is removed starting at the position specified by index .
另请参阅 removePoints () 和 clear ().
[signal]
void
QXYSeries::
pointsReplaced
()
This signal is emitted when all points are replaced with other points.
另请参阅 replace ().
[signal]
void
QXYSeries::
pressed
(const
QPointF
&
point
)
This signal is emitted when the user presses the data point point in the chart and holds down the mouse button.
另请参阅 clicked (), released (),和 doubleClicked ().
[signal]
void
QXYSeries::
released
(const
QPointF
&
point
)
This signal is emitted when the user releases the mouse press on the data point specified by point .
另请参阅 pressed (), clicked (),和 doubleClicked ().
[虚拟]
QXYSeries::
~QXYSeries
()
删除系列。系列被添加到 QChart instances are owned by them, and are deleted when the QChart instances are deleted.
添加的数据点带坐标 x and y 到系列。
这是重载函数。
添加数据点 point 到系列。
这是重载函数。
Adds the list of data points specified by points 到系列。
Returns the data point at the position specified by index in the internal points vector.
Returns the brush used to fill the data points for the series.
另请参阅 setBrush ().
从系列删除所有点。
另请参阅 pointsRemoved ().
返回系列中的数据点数。
Inserts the data point point in the series at the position specified by index .
另请参阅 pointAdded ().
返回用于绘制系列数据点轮廓的钢笔。
另请参阅 setPen ().
Returns the points in the series as a list. Use pointsVector () for better performance.
Returns the points in the series as a vector. This is more efficient than calling points ().
Removes the point that has the coordinates x and y from the series.
另请参阅 pointRemoved ().
Removes the data point point from the series.
另请参阅 pointRemoved ().
Removes the point at the position specified by index from the series.
另请参阅 pointRemoved ().
Removes the number of points specified by count from the series starting at the position specified by index .
另请参阅 pointsRemoved ().
Replaces the point with the coordinates oldX and oldY with the point with the coordinates newX and newY . Does nothing if the old point does not exist.
另请参阅 pointReplaced ().
Replaces the point specified by oldPoint with the one specified by newPoint .
另请参阅 pointReplaced ().
Replaces the point at the position specified by index with the point that has the coordinates newX and newY .
另请参阅 pointReplaced ().
Replaces the point at the position specified by index with the point specified by newPoint .
另请参阅 pointReplaced ().
Replaces the current points with the points specified by points .
注意:
This is much faster than replacing data points one by one, or first clearing all data, and then appending the new data. Emits
QXYSeries::pointsReplaced
() when the points have been replaced. However, note that using the overload that takes
QVector<QPointF>
as parameter is faster than using this overload.
另请参阅 pointsReplaced ().
Replaces the current points with the points specified by points .
注意: This is much faster than replacing data points one by one, or first clearing all data, and then appending the new data. Emits QXYSeries::pointsReplaced () when the points have been replaced.
另请参阅 pointsReplaced ().
[虚拟]
void
QXYSeries::
setBrush
(const
QBrush
&
brush
)
Sets the brush used for drawing points on the chart to brush . If the brush is not defined, the brush from the chart theme setting is used.
另请参阅 brush () 和 QChart::setTheme ().
[虚拟]
void
QXYSeries::
setPen
(const
QPen
&
pen
)
将用于在图表中绘制点的钢笔设为 pen 。若钢笔未定义,则使用来自图表主题的钢笔。
另请参阅 pen () 和 QChart::setTheme ().
流运算符用于添加数据点 point 到系列。
另请参阅 append ().
流运算符用于添加数据点列表指定通过 points 到系列。
另请参阅 append ().