QLogValue3DAxisFormatter Class
QLogValue3DAxisFormatter implements logarithmic value axis formatter. More...
| Header: | #include <QLogValue3DAxisFormatter> |
| Since: | QtDataVisualization 1.1 |
| Instantiated By: | LogValueAxis3DFormatter |
| Inherits: | QValue3DAxisFormatter |
Properties
- autoSubGrid : bool
- base : qreal
- showEdgeLabels : bool
- 1 property inherited from QObject
Public Functions
| QLogValue3DAxisFormatter(QObject *parent = Q_NULLPTR) | |
| virtual | ~QLogValue3DAxisFormatter() |
| bool | autoSubGrid() const |
| qreal | base() const |
| void | setAutoSubGrid(bool enabled) |
| void | setBase(qreal base) |
| void | setShowEdgeLabels(bool enabled) |
| bool | showEdgeLabels() const |
- 31 public functions inherited from QObject
Signals
| void | autoSubGridChanged(bool enabled) |
| void | baseChanged(qreal base) |
| void | showEdgeLabelsChanged(bool enabled) |
- 2 signals inherited from QObject
Additional Inherited Members
- 1 public slot inherited from QObject
- 1 public variable inherited from QObject
- 10 static public members inherited from QObject
- 18 protected functions inherited from QValue3DAxisFormatter
- 9 protected functions inherited from QObject
- 2 protected variables inherited from QObject
Detailed Description
QLogValue3DAxisFormatter implements logarithmic value axis formatter.
This class provides formatting rules for a logarithmic QValue3DAxis.
When a QLogValue3DAxisFormatter is attached to a QValue3DAxis, the axis range cannot include negative values or the zero.
See also QValue3DAxisFormatter.
Property Documentation
autoSubGrid : bool
If this property value is set to true, the parent axis sub-segment count is ignored when calculating sub-grid line positions. The sub-grid positions are generated automatically according to the base property value. The number of sub-grid lines is set to base value minus one, rounded down. This property is ignored when base property value is zero. Defaults to true.
Access functions:
| bool | autoSubGrid() const |
| void | setAutoSubGrid(bool enabled) |
Notifier signal:
| void | autoSubGridChanged(bool enabled) |
See also base and QValue3DAxis::subSegmentCount.
base : qreal
The base of the logarithm used to map axis values. If the base is non-zero, the parent axis segment count will be ignored when the grid line and label positions are calculated. If you want the range to be divided into equal segments like normal value axis, set this property value to zero.
The base has to be zero or positive value and not equal to one. Defaults to ten.
Access functions:
| qreal | base() const |
| void | setBase(qreal base) |
Notifier signal:
| void | baseChanged(qreal base) |
See also QValue3DAxis::segmentCount.
showEdgeLabels : bool
When the base property value is non-zero, the whole axis range is often not equally divided into segments. The first and last segments are often smaller than the other segments. In extreme cases this can lead to overlapping labels on the first and last two grid lines. By setting this property to false, you can suppress showing the minimum and maximum labels for the axis in cases where the segments do not exactly fit the axis. Defaults to true.
Access functions:
| bool | showEdgeLabels() const |
| void | setShowEdgeLabels(bool enabled) |
Notifier signal:
| void | showEdgeLabelsChanged(bool enabled) |
See also base and QAbstract3DAxis::labels.
Member Function Documentation
QLogValue3DAxisFormatter::QLogValue3DAxisFormatter(QObject *parent = Q_NULLPTR)
Constructs a new QLogValue3DAxisFormatter instance with optional parent.
[virtual] QLogValue3DAxisFormatter::~QLogValue3DAxisFormatter()
Destroys QLogValue3DAxisFormatter.