The QColorAxis class displays a color scale as one of the chart's axes. More...
| Header: | #include <QColorAxis> |
| Since: | Qt 6.2 |
| Inherits: | QAbstractAxis |
| virtual | ~QColorAxis() |
| bool | autoRange() const |
| QLinearGradient | gradient() const |
| qreal | max() const |
| qreal | min() const |
| void | setAutoRange(bool autoRange) |
| void | setGradient(const QLinearGradient &gradient) |
| void | setMax(qreal max) |
| void | setMin(qreal min) |
| void | setSize(const qreal size) |
| void | setTickCount(int count) |
| qreal | size() const |
| int | tickCount() const |
| void | autoRangeChanged(bool autoRange) |
| void | maxChanged(qreal max) |
| void | minChanged(qreal min) |
| void | rangeChanged(qreal min, qreal max) |
| void | sizeChanged(const qreal size) |
| void | tickCountChanged(int tickCount) |
A color axis can be set up to show a color scale based on the passed gradient. The scale has tick marks with labels based on data passed in QXYSeries::colorby method.
This property holds the property indicating if the range should be set from the list of values passed in QXYSeries::colorBy method or rather taken from the axis itself.
The default value is true.
Access functions:
| bool | autoRange() const |
| void | setAutoRange(bool autoRange) |
Notifier signal:
| void | autoRangeChanged(bool autoRange) |
This property holds the maximum value on the axis.
When setting this property, the minimum value is adjusted if necessary, to ensure that the range remains valid.
Access functions:
| qreal | max() const |
| void | setMax(qreal max) |
Notifier signal:
| void | maxChanged(qreal max) |
This property holds the minimum value on the axis.
When setting this property, the maximum value is adjusted if necessary, to ensure that the range remains valid.
Access functions:
| qreal | min() const |
| void | setMin(qreal min) |
Notifier signal:
| void | minChanged(qreal min) |
This property holds the size of the color scale.
Depending on the alignment the value indicates either width or height.
Access functions:
| qreal | size() const |
| void | setSize(const qreal size) |
Notifier signal:
| void | sizeChanged(const qreal size) |
This property holds the number of tick marks on the axis. This indicates how many grid lines are drawn on the chart if QColorAxis::gridVisible is equal to true. The default value is 5, and the
number cannot be less than 2.
Note: Grid lines are intentionally invisible by default in QColorAxis as this type of axis does not represent geometric values.
Access functions:
| int | tickCount() const |
| void | setTickCount(int count) |
Notifier signal:
| void | tickCountChanged(int tickCount) |
[virtual noexcept] QColorAxis::~QColorAxis()Destroys the object.
[signal] void QColorAxis::autoRangeChanged(bool
autoRange)This signal is emitted when the auto range mode, specified by autoRange, changes.
Note: Notifier signal for property autoRange.
Returns the gradient currently used on the color scale.
Note: If the axis is attached to a series, the gradient is also used by the QXYSeries::colorBy method.
See also setGradient.
[signal] void QColorAxis::maxChanged(qreal max)This signal is emitted when the maximum value of the axis, specified by max, changes.
Note: Notifier signal for property max.
[signal] void QColorAxis::minChanged(qreal min)This signal is emitted when the minimum value of the axis, specified by min, changes.
Note: Notifier signal for property min.
[signal] void QColorAxis::rangeChanged(qreal min, qreal max)This signal is emitted when the minimum or maximum value of the axis, specified by min and max, changes.
Sets the gradient on the color scale to gradient.
Note: If the axis is attached to a series, the gradient is also used by the QXYSeries::colorBy method.
See also gradient.
[signal] void QColorAxis::tickCountChanged(int
tickCount)This signal is emitted when the number of tick marks on the axis, specified by tickCount, changes.
Note: Notifier signal for property tickCount.
