QValueAxis Class
The QValueAxis class adds values to a graph's axes. More...
| Header: | #include <QValueAxis> |
| CMake: | find_package(Qt6 REQUIRED COMPONENTS Graphs)target_link_libraries(mytarget PRIVATE Qt6::Graphs) |
| qmake: | QT += graphs |
| In QML: | ValueAxis |
| Inherits: | QAbstractAxis |
- List of all members, including inherited members
- QValueAxis is part of Qt Graphs C++ Classes for 2D.
Properties
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Public Functions
| QValueAxis(QObject *parent = nullptr) | |
| virtual | ~QValueAxis() override |
| int | labelDecimals() const |
| QString | labelFormat() const |
| qreal | max() const |
| qreal | min() const |
| void | setLabelDecimals(int decimals) |
| void | setLabelFormat(const QString &format) |
| void | setMax(qreal max) |
| void | setMin(qreal min) |
| void | setRange(qreal min, qreal max) |
| void | setSubTickCount(qsizetype count) |
| void | setTickAnchor(qreal anchor) |
| void | setTickInterval(qreal interval) |
| qsizetype | subTickCount() const |
| qreal | tickAnchor() const |
| qreal | tickInterval() const |
Reimplemented Public Functions
| virtual QAbstractAxis::AxisType | type() const override |
Signals
| void | labelDecimalsChanged(int decimals) |
| void | labelFormatChanged(const QString &format) |
| void | maxChanged(qreal max) |
| void | minChanged(qreal min) |
| void | subTickCountChanged(qsizetype subTickCount) |
| void | tickAnchorChanged(qreal tickAnchor) |
| void | tickIntervalChanged(qreal tickInterval) |
Detailed Description
A value axis can be set up to show an axis line with tick marks, grid lines, and shades. The values on the axis are drawn at the positions of tick marks.
Property Documentation
labelDecimals : int
This property holds the number of decimals used for showing the labels. When set to -1, decimal amount is adjusted automatically based on the values range. The default value is -1.
Access functions:
| int | labelDecimals() const |
| void | setLabelDecimals(int decimals) |
Notifier signal:
| void | labelDecimalsChanged(int decimals) |
labelFormat : QString
This property holds the label format of the axis.
The format string supports the following conversion specifiers, length modifiers, and flags provided by printf() in the standard C++ library: d, i, o, x, X, f, F, e, E, g, G, c.
The default value is empty, in which case 'f' format is used.
Access functions:
| QString | labelFormat() const |
| void | setLabelFormat(const QString &format) |
Notifier signal:
| void | labelFormatChanged(const QString &format) |
See also QString::asprintf().
max : qreal
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. The default value is 10.0
Access functions:
| qreal | max() const |
| void | setMax(qreal max) |
Notifier signal:
| void | maxChanged(qreal max) |
min : qreal
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. The default value is 0.0
Access functions:
| qreal | min() const |
| void | setMin(qreal min) |
Notifier signal:
| void | minChanged(qreal min) |
subTickCount : qsizetype
This property holds the number of subticks on the axis. This indicates how many subticks are drawn between major lines on the graph. Labels are not drawn for subticks. The default value is 0.
Access functions:
| qsizetype | subTickCount() const |
| void | setSubTickCount(qsizetype count) |
Notifier signal:
| void | subTickCountChanged(qsizetype subTickCount) |
tickAnchor : qreal
This property holds the base value where the dynamically placed tick marks and labels are started from. The default value is 0.
Access functions:
| qreal | tickAnchor() const |
| void | setTickAnchor(qreal anchor) |
Notifier signal:
| void | tickAnchorChanged(qreal tickAnchor) |
tickInterval : qreal
This property holds the interval between dynamically placed tick marks and labels. The default value is 0, which means that intervals are automatically calculated based on the min and max range.
Access functions:
| qreal | tickInterval() const |
| void | setTickInterval(qreal interval) |
Notifier signal:
| void | tickIntervalChanged(qreal tickInterval) |
Member Function Documentation
[explicit] QValueAxis::QValueAxis(QObject *parent = nullptr)
Constructs an axis object that is a child of parent.
[override virtual noexcept] QValueAxis::~QValueAxis()
Destroys the object.
void QValueAxis::setRange(qreal min, qreal max)
Sets the range from min to max on the axis. If min is greater than max, this function returns without making any changes.
[override virtual] QAbstractAxis::AxisType QValueAxis::type() const
Reimplements: QAbstractAxis::type() const.
Returns the type of the axis.