Contents

QAbstractAxis Class

The QAbstractAxis class is a base class used for specialized axis classes. More...

Header: #include <QAbstractAxis>
Instantiated By: AbstractAxis
Inherits: QObject
Inherited By:

QBarCategoryAxis, QDateTimeAxis, QLogValueAxis, and QValueAxis

Public Types

enum AxisType { AxisTypeNoAxis, AxisTypeValue, AxisTypeBarCategory, AxisTypeCategory, AxisTypeDateTime, AxisTypeLogValue }
flags AxisTypes

Properties

Public Functions

virtual ~QAbstractAxis()
Qt::Alignment alignment() const
QColor gridLineColor()
QPen gridLinePen() const
void hide()
bool isGridLineVisible() const
bool isLineVisible() const
bool isMinorGridLineVisible() const
bool isReverse() const
bool isTitleVisible() const
bool isVisible() const
int labelsAngle() const
QBrush labelsBrush() const
QColor labelsColor() const
bool labelsEditable() const
QFont labelsFont() const
bool labelsVisible() const
QPen linePen() const
QColor linePenColor() const
QColor minorGridLineColor()
QPen minorGridLinePen() const
Qt::Orientation orientation() const
void setGridLineColor(const QColor &color)
void setGridLinePen(const QPen &pen)
void setGridLineVisible(bool visible = true)
void setLabelsAngle(int angle)
void setLabelsBrush(const QBrush &brush)
void setLabelsColor(QColor color)
void setLabelsEditable(bool editable = true)
void setLabelsFont(const QFont &font)
void setLabelsVisible(bool visible = true)
void setLinePen(const QPen &pen)
void setLinePenColor(QColor color)
void setLineVisible(bool visible = true)
void setMax(const QVariant &max)
void setMin(const QVariant &min)
void setMinorGridLineColor(const QColor &color)
void setMinorGridLinePen(const QPen &pen)
void setMinorGridLineVisible(bool visible = true)
void setRange(const QVariant &min, const QVariant &max)
void setReverse(bool reverse = true)
void setShadesBorderColor(QColor color)
void setShadesBrush(const QBrush &brush)
void setShadesColor(QColor color)
void setShadesPen(const QPen &pen)
void setShadesVisible(bool visible = true)
void setTitleBrush(const QBrush &brush)
void setTitleFont(const QFont &font)
void setTitleText(const QString &title)
void setTitleVisible(bool visible = true)
void setVisible(bool visible = true)
QColor shadesBorderColor() const
QBrush shadesBrush() const
QColor shadesColor() const
QPen shadesPen() const
bool shadesVisible() const
void show()
QBrush titleBrush() const
QFont titleFont() const
QString titleText() const
virtual QAbstractAxis::AxisType type() const = 0

Signals

void colorChanged(QColor color)
void gridLineColorChanged(const QColor &color)
void gridLinePenChanged(const QPen &pen)
void gridVisibleChanged(bool visible)
void labelsAngleChanged(int angle)
void labelsBrushChanged(const QBrush &brush)
void labelsColorChanged(QColor color)
void labelsEditableChanged(bool editable)
void labelsFontChanged(const QFont &font)
void labelsVisibleChanged(bool visible)
void linePenChanged(const QPen &pen)
void lineVisibleChanged(bool visible)
void minorGridLineColorChanged(const QColor &color)
void minorGridLinePenChanged(const QPen &pen)
void minorGridVisibleChanged(bool visible)
void reverseChanged(bool reverse)
void shadesBorderColorChanged(QColor color)
void shadesBrushChanged(const QBrush &brush)
void shadesColorChanged(QColor color)
void shadesPenChanged(const QPen &pen)
void shadesVisibleChanged(bool visible)
void titleBrushChanged(const QBrush &brush)
void titleFontChanged(const QFont &font)
void titleTextChanged(const QString &text)
void titleVisibleChanged(bool visible)
void visibleChanged(bool visible)

Detailed Description

Each series can be bound to one or more horizontal and vertical axes, but mixing axis types that would result in different domains is not supported, such as specifying QValueAxis and QLogValueAxis on the same orientation.

The properties and visibility of various axis elements, such as axis line, title, labels, grid lines, and shades, can be individually controlled.

Member Type Documentation

enum QAbstractAxis::AxisType
flags QAbstractAxis::AxisTypes

This enum type specifies the type of the axis object.

ConstantValue
QAbstractAxis::AxisTypeNoAxis0x0
QAbstractAxis::AxisTypeValue0x1
QAbstractAxis::AxisTypeBarCategory0x2
QAbstractAxis::AxisTypeCategory0x4
QAbstractAxis::AxisTypeDateTime0x8
QAbstractAxis::AxisTypeLogValue0x10

The AxisTypes type is a typedef for QFlags<AxisType>. It stores an OR combination of AxisType values.

Property Documentation

alignment : const Qt::Alignment

This property holds the alignment of the axis.

Can be Qt::AlignLeft, Qt::AlignRight, Qt::AlignBottom, or Qt::AlignTop.

Access functions:

Qt::Alignment alignment() const

color : QColor

This property holds the color of the axis and tick marks.

Access functions:

QColor linePenColor() const
void setLinePenColor(QColor color)

Notifier signal:

void colorChanged(QColor color)

gridLineColor : QColor

This property holds the color of the grid line.

Access functions:

QColor gridLineColor()
void setGridLineColor(const QColor &color)

Notifier signal:

void gridLineColorChanged(const QColor &color)

gridLinePen : QPen

This property holds the pen used to draw the grid line.

Access functions:

QPen gridLinePen() const
void setGridLinePen(const QPen &pen)

Notifier signal:

void gridLinePenChanged(const QPen &pen)

gridVisible : bool

This property holds the visibility of the grid lines.

Access functions:

bool isGridLineVisible() const
void setGridLineVisible(bool visible = true)

Notifier signal:

void gridVisibleChanged(bool visible)

labelsAngle : int

This property holds the angle of the axis labels in degrees.

Access functions:

int labelsAngle() const
void setLabelsAngle(int angle)

Notifier signal:

void labelsAngleChanged(int angle)

labelsBrush : QBrush

This property holds the brush used to draw the labels.

Only the color of the brush is relevant.

Access functions:

QBrush labelsBrush() const
void setLabelsBrush(const QBrush &brush)

Notifier signal:

void labelsBrushChanged(const QBrush &brush)

labelsColor : QColor

This property holds the color of the axis labels.

Access functions:

QColor labelsColor() const
void setLabelsColor(QColor color)

Notifier signal:

void labelsColorChanged(QColor color)

labelsFont : QFont

This property holds the font of the axis labels.

Access functions:

QFont labelsFont() const
void setLabelsFont(const QFont &font)

Notifier signal:

void labelsFontChanged(const QFont &font)

labelsVisible : bool

This property holds whether axis labels are visible.

Access functions:

bool labelsVisible() const
void setLabelsVisible(bool visible = true)

Notifier signal:

void labelsVisibleChanged(bool visible)

linePen : QPen

This property holds the pen used to draw the line.

Access functions:

QPen linePen() const
void setLinePen(const QPen &pen)

Notifier signal:

void linePenChanged(const QPen &pen)

lineVisible : bool

This property holds the visibility of the axis line.

Access functions:

bool isLineVisible() const
void setLineVisible(bool visible = true)

Notifier signal:

void lineVisibleChanged(bool visible)

minorGridLineColor : QColor

This property holds the color of the minor grid line.

Applies only to axes that support minor grid lines.

Access functions:

QColor minorGridLineColor()
void setMinorGridLineColor(const QColor &color)

Notifier signal:

void minorGridLineColorChanged(const QColor &color)

minorGridLinePen : QPen

This property holds the pen used to draw the minor grid line.

Applies only to axes that support minor grid lines.

Access functions:

QPen minorGridLinePen() const
void setMinorGridLinePen(const QPen &pen)

Notifier signal:

void minorGridLinePenChanged(const QPen &pen)

minorGridVisible : bool

This property holds the visibility of the minor grid lines.

Applies only to axes that support minor grid lines.

Access functions:

bool isMinorGridLineVisible() const
void setMinorGridLineVisible(bool visible = true)

Notifier signal:

void minorGridVisibleChanged(bool visible)

orientation : const Qt::Orientation

This property holds the orientation of the axis.

Fixed to either Qt::Horizontal or Qt::Vertical when the axis is added to a chart.

Access functions:

Qt::Orientation orientation() const

reverse : bool

This property holds whether a reverse axis is used.

By default, the value is false.

The reverse axis is supported with a line, spline, and scatter series, as well as an area series with a cartesian chart. All axes of the same orientation attached to the same series must be reversed if one is reversed or the behavior is undefined.

Access functions:

bool isReverse() const
void setReverse(bool reverse = true)

Notifier signal:

void reverseChanged(bool reverse)

shadesBorderColor : QColor

This property holds the border (pen) color of the axis shades.

Access functions:

QColor shadesBorderColor() const
void setShadesBorderColor(QColor color)

Notifier signal:

void shadesBorderColorChanged(QColor color)

shadesBrush : QBrush

This property holds the brush used to draw the axis shades (the area between the grid lines).

Access functions:

QBrush shadesBrush() const
void setShadesBrush(const QBrush &brush)

Notifier signal:

void shadesBrushChanged(const QBrush &brush)

shadesColor : QColor

This property holds the fill (brush) color of the axis shades.

Access functions:

QColor shadesColor() const
void setShadesColor(QColor color)

Notifier signal:

void shadesColorChanged(QColor color)

shadesPen : QPen

This property holds the pen used to draw the axis shades (the area between the grid lines).

Access functions:

QPen shadesPen() const
void setShadesPen(const QPen &pen)

Notifier signal:

void shadesPenChanged(const QPen &pen)

shadesVisible : bool

This property holds the visibility of the axis shades.

Access functions:

bool shadesVisible() const
void setShadesVisible(bool visible = true)

Notifier signal:

void shadesVisibleChanged(bool visible)

titleBrush : QBrush

This property holds the brush used to draw the title text.

Only the color of the brush is relevant.

Access functions:

QBrush titleBrush() const
void setTitleBrush(const QBrush &brush)

Notifier signal:

void titleBrushChanged(const QBrush &brush)

titleFont : QFont

This property holds the font of the title of the axis.

Access functions:

QFont titleFont() const
void setTitleFont(const QFont &font)

Notifier signal:

void titleFontChanged(const QFont &font)

titleText : QString

This property holds the title of the axis.

Empty by default. Axis titles support HTML formatting.

Access functions:

QString titleText() const
void setTitleText(const QString &title)

Notifier signal:

void titleTextChanged(const QString &text)

titleVisible : bool

This property holds the visibility of the axis title.

By default, the value is true.

Access functions:

bool isTitleVisible() const
void setTitleVisible(bool visible = true)

Notifier signal:

void titleVisibleChanged(bool visible)

visible : bool

This property holds the visibility of the axis.

Access functions:

bool isVisible() const
void setVisible(bool visible = true)

Notifier signal:

void visibleChanged(bool visible)

Member Function Documentation

[signal] void QAbstractAxis::colorChanged(QColor color)

This signal is emitted when the color of the axis changes to color.

Note: Notifier signal for property color.

[signal] void QAbstractAxis::gridLineColorChanged(const QColor &color)

This signal is emitted when the color of the pen used to draw the grid line changes to color.

Note: Notifier signal for property gridLineColor.

[signal] void QAbstractAxis::gridLinePenChanged(const QPen &pen)

This signal is emitted when the pen used to draw the grid line changes to pen.

Note: Notifier signal for property gridLinePen.

[signal] void QAbstractAxis::gridVisibleChanged(bool visible)

This signal is emitted when the visibility of the grid lines of the axis changes to visible.

Note: Notifier signal for property gridVisible.

[signal] void QAbstractAxis::labelsAngleChanged(int angle)

This signal is emitted when the angle of the axis labels changes to angle.

Note: Notifier signal for property labelsAngle.

[signal] void QAbstractAxis::labelsBrushChanged(const QBrush &brush)

This signal is emitted when the brush used to draw the axis labels changes to brush.

Note: Notifier signal for property labelsBrush.

[signal] void QAbstractAxis::labelsColorChanged(QColor color)

This signal is emitted when the color of the axis labels changes to color.

Note: Notifier signal for property labelsColor.

[signal] void QAbstractAxis::labelsEditableChanged(bool editable)

This signal is emitted when the editable state of the label changes.

This function was introduced in Qt 5.13.

[signal] void QAbstractAxis::labelsFontChanged(const QFont &font)

This signal is emitted when the font of the axis labels changes to font.

Note: Notifier signal for property labelsFont.

[signal] void QAbstractAxis::labelsVisibleChanged(bool visible)

This signal is emitted when the visibility of the labels of the axis changes to visible.

Note: Notifier signal for property labelsVisible.

[signal] void QAbstractAxis::linePenChanged(const QPen &pen)

This signal is emitted when the pen used to draw the line of the axis changes to pen.

Note: Notifier signal for property linePen.

[signal] void QAbstractAxis::lineVisibleChanged(bool visible)

This signal is emitted when the visibility of the axis line changes to visible.

Note: Notifier signal for property lineVisible.

[signal] void QAbstractAxis::minorGridLineColorChanged(const QColor &color)

This signal is emitted when the color of the pen used to draw the minor grid line changes to color.

Note: Notifier signal for property minorGridLineColor.

[signal] void QAbstractAxis::minorGridLinePenChanged(const QPen &pen)

This signal is emitted when the pen used to draw the minor grid line changes to pen.

Note: Notifier signal for property minorGridLinePen.

[signal] void QAbstractAxis::minorGridVisibleChanged(bool visible)

This signal is emitted when the visibility of the minor grid lines of the axis changes to visible.

Note: Notifier signal for property minorGridVisible.

[signal] void QAbstractAxis::shadesBorderColorChanged(QColor color)

This signal is emitted when the border color of the axis shades changes to color.

Note: Notifier signal for property shadesBorderColor.

[signal] void QAbstractAxis::shadesBrushChanged(const QBrush &brush)

This signal is emitted when the brush used to draw the axis shades changes to brush.

Note: Notifier signal for property shadesBrush.

[signal] void QAbstractAxis::shadesColorChanged(QColor color)

This signal is emitted when the color of the axis shades changes to color.

Note: Notifier signal for property shadesColor.

[signal] void QAbstractAxis::shadesPenChanged(const QPen &pen)

This signal is emitted when the pen used to draw the axis shades changes to pen.

Note: Notifier signal for property shadesPen.

[signal] void QAbstractAxis::shadesVisibleChanged(bool visible)

This signal is emitted when the visibility of the axis shades changes to visible.

Note: Notifier signal for property shadesVisible.

[signal] void QAbstractAxis::titleBrushChanged(const QBrush &brush)

This signal is emitted when the brush used to draw the axis title changes to brush.

Note: Notifier signal for property titleBrush.

[signal] void QAbstractAxis::titleFontChanged(const QFont &font)

This signal is emitted when the font of the axis title changes to font.

Note: Notifier signal for property titleFont.

[signal] void QAbstractAxis::titleTextChanged(const QString &text)

This signal is emitted when the text of the axis title changes to text.

Note: Notifier signal for property titleText.

[signal] void QAbstractAxis::titleVisibleChanged(bool visible)

This signal is emitted when the visibility of the title text of the axis changes to visible.

Note: Notifier signal for property titleVisible.

[signal] void QAbstractAxis::visibleChanged(bool visible)

This signal is emitted when the visibility of the axis changes to visible.

Note: Notifier signal for property visible.

[virtual] QAbstractAxis::~QAbstractAxis()

Destructs the axis object. When the axis is added to a chart, the chart object takes ownership.

QPen QAbstractAxis::gridLinePen() const

Returns the pen used to draw the grid.

Note: Getter function for property gridLinePen.

See also setGridLinePen().

void QAbstractAxis::hide()

Makes the axis, shades, labels, and grid lines invisible.

QBrush QAbstractAxis::labelsBrush() const

Returns the brush used to draw labels.

Note: Getter function for property labelsBrush.

See also setLabelsBrush().

bool QAbstractAxis::labelsEditable() const

Returns true if axis labels are editable.

This function was introduced in Qt 5.13.

See also setLabelsEditable().

QFont QAbstractAxis::labelsFont() const

Returns the font used to draw labels.

Note: Getter function for property labelsFont.

See also setLabelsFont().

QPen QAbstractAxis::linePen() const

Returns the pen used to draw the axis line and tick marks.

Note: Getter function for property linePen.

See also setLinePen().

Qt::Orientation QAbstractAxis::orientation() const

Returns the orientation of the axis (vertical or horizontal).

Note: Getter function for property orientation.

void QAbstractAxis::setGridLinePen(const QPen &pen)

Sets the pen used to draw the grid lines to pen.

Note: Setter function for property gridLinePen.

See also gridLinePen().

void QAbstractAxis::setLabelsBrush(const QBrush &brush)

Sets the brush used to draw labels to brush.

Note: Setter function for property labelsBrush.

See also labelsBrush().

void QAbstractAxis::setLabelsEditable(bool editable = true)

Sets axis labels editability to editable.

When the labels are editable the user will be able to change the range of the axis conveniently by editing any of the labels. This feature is only supported for the QValueAxis and the QDateTimeAxis.

By default, labels are not editable.

This function was introduced in Qt 5.13.

See also labelsEditable().

void QAbstractAxis::setLabelsFont(const QFont &font)

Sets the font used to draw labels to font.

Note: Setter function for property labelsFont.

See also labelsFont().

void QAbstractAxis::setLinePen(const QPen &pen)

Sets the pen used to draw the axis line and tick marks to pen.

Note: Setter function for property linePen.

See also linePen().

void QAbstractAxis::setLineVisible(bool visible = true)

Determines whether the axis line and tick marks are visible.

Note: Setter function for property lineVisible.

See also isLineVisible().

void QAbstractAxis::setMax(const QVariant &max)

Sets the maximum value shown on the axis. Depending on the actual axis type, the max parameter is converted to the appropriate type of value. If the conversion is impossible, the function call does nothing.

void QAbstractAxis::setMin(const QVariant &min)

Sets the minimum value shown on the axis. Depending on the actual axis type, the min parameter is converted to the appropriate type of value. If the conversion is impossible, the function call does nothing.

void QAbstractAxis::setRange(const QVariant &min, const QVariant &max)

Sets the range shown on the axis. Depending on the actual axis type, the min and max parameters are converted to appropriate types of values. If the conversion is impossible, the function call does nothing.

void QAbstractAxis::setShadesBrush(const QBrush &brush)

Sets the brush used to draw shades to brush.

Note: Setter function for property shadesBrush.

See also shadesBrush().

void QAbstractAxis::setShadesPen(const QPen &pen)

Sets the pen used to draw shades to pen.

Note: Setter function for property shadesPen.

See also shadesPen().

void QAbstractAxis::setTitleBrush(const QBrush &brush)

Sets the brush used to draw titles to brush.

Note: Setter function for property titleBrush.

See also titleBrush().

void QAbstractAxis::setTitleFont(const QFont &font)

Sets the font used to draw titles to font.

Note: Setter function for property titleFont.

See also titleFont().

void QAbstractAxis::setVisible(bool visible = true)

Sets the visibility of the axis, shades, labels, and grid lines to visible.

Note: Setter function for property visible.

See also isVisible().

QBrush QAbstractAxis::shadesBrush() const

Returns the brush used to draw shades.

Note: Getter function for property shadesBrush.

See also setShadesBrush().

QPen QAbstractAxis::shadesPen() const

Returns the pen used to draw shades.

Note: Getter function for property shadesPen.

See also setShadesPen().

void QAbstractAxis::show()

Makes the axis, shades, labels, and grid lines visible.

QBrush QAbstractAxis::titleBrush() const

Returns the brush used to draw titles.

Note: Getter function for property titleBrush.

See also setTitleBrush().

QFont QAbstractAxis::titleFont() const

Returns the font used to draw titles.

Note: Getter function for property titleFont.

See also setTitleFont().

[pure virtual] QAbstractAxis::AxisType QAbstractAxis::type() const

Returns the type of the axis.

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