Class QAccelPlot::GradientFill¶

ClassList > QAccelPlot > GradientFill

A LineCurve effect that fills the area under the curve with a color gradient.More...

#include <GradientFill.hpp>

Inherits the following classes: QAccelPlot::LineCurveEffect

Inheritance diagram¶

flowchart TB
  classQAccelPlot_1_1GradientFill["QAccelPlot::GradientFill"]

  classQAccelPlot_1_1LineCurveEffect["QAccelPlot::LineCurveEffect"]
  classQAccelPlot_1_1LineCurveEffect --> classQAccelPlot_1_1GradientFill
  click classQAccelPlot_1_1LineCurveEffect "../classQAccelPlot_1_1LineCurveEffect/" "Open QAccelPlot::LineCurveEffect"

  external_base_classQAccelPlot_1_1LineCurveEffect_1["QObject"]
  external_base_classQAccelPlot_1_1LineCurveEffect_1 --> classQAccelPlot_1_1LineCurveEffect

Public Properties¶

Type	Name
property GradientFillBaseline	baseline Where the filled area's baseline starts (axis minimum or a fixed value).
property qreal	baselineValue Fixed baseline data value used when `baseline` is`GradientFillBaseline.Value` .
property Colormap *	colormap Colormap supplying the color stops. Overrides`gradient` when set.
property Qt::Orientation	direction Axis along which the gradient color varies:`Qt.Horizontal` for X values,`Qt.Vertical` for Y values. Default:`Qt.Horizontal` .
property QObject *	gradient A Qt `Gradient` (or compatible) object supplying the color stops.
property qreal	opacity Overall opacity of the fill area in [0, 1]. Default: 0.35.
property qreal	valueMax Data-space value that maps to gradient position 1.0. Only used when valueMaxSource is Fixed.
property GradientValueSource	valueMaxSource How the gradient normalization maximum is determined; see `GradientValueSource` .
property qreal	valueMin Data-space value that maps to gradient position 0.0. Only used when valueMinSource is Fixed.
property GradientValueSource	valueMinSource How the gradient normalization minimum is determined; see `GradientValueSource` .

Public Properties inherited from QAccelPlot::LineCurveEffect¶

See QAccelPlot::LineCurveEffect

Type	Name
property QML_ANONYMOUSbool	enabled Whether this effect is active. Disabled effects are ignored during rendering.

Public Signals¶

Type	Name
signal void	baselineChanged Emitted when the baseline property changes.
signal void	baselineValueChanged Emitted when the baselineValue property changes.
signal void	colormapChanged Emitted when the colormap property changes.
signal void	directionChanged Emitted when the direction property changes.
signal void	gradientChanged Emitted when the gradient property changes.
signal void	opacityChanged Emitted when the opacity property changes.
signal void	valueMaxChanged Emitted when the valueMax property changes.
signal void	valueMaxSourceChanged Emitted when the valueMaxSource property changes.
signal void	valueMinChanged Emitted when the valueMin property changes.
signal void	valueMinSourceChanged Emitted when the valueMinSource property changes.

Public Signals inherited from QAccelPlot::LineCurveEffect¶

See QAccelPlot::LineCurveEffect

Type	Name
signal void	effectChanged Emitted when any effect property changes, requesting a curve redraw.
signal void	enabledChanged Emitted when the enabled property changes.

Public Functions¶

Type	Name
	GradientFill (QObject * parent=nullptr) Constructs a GradientFill with the given__parent .
GradientFillBaseline	baseline () const Returns the baseline mode.
qreal	baselineValue () const Returns the fixed baseline data value.
Colormap *	colormap () const Returns the colormap supplying color stops, or `nullptr` when`gradient` supplies them.
Qt::Orientation	direction () const Returns the gradient direction.
QObject *	gradient () const Returns the Qt Gradient object supplying color stops.
qreal	opacity () const Returns the fill opacity.
const GradientFillPayload &	payload () const Returns a snapshot of all fill parameters, updated on the GUI thread when the effect changes.
virtual void	refresh () override Re-reads the `gradient` stops, which can change without a notification, and emits`effectChanged()` if they differ from the snapshot.
void	setBaseline (GradientFillBaseline baseline) Sets the baseline mode to baseline .
void	setBaselineValue (qreal value) Sets the fixed baseline data value to value .
void	setColormap (Colormap * colormap) Sets the colormap to colormap . Pass`nullptr` to take the stops from`gradient` .
void	setDirection (Qt::Orientation direction) Sets the gradient direction to direction .
void	setGradient (QObject * gradient) Sets the Qt Gradient object to gradient .
void	setOpacity (qreal value) Sets the fill opacity to value .
void	setValueMax (qreal value) Sets the maximum data value for gradient normalization to value .
void	setValueMaxSource (GradientValueSource source) Sets the gradient normalization maximum source to source .
void	setValueMin (qreal value) Sets the minimum data value for gradient normalization to value .
void	setValueMinSource (GradientValueSource source) Sets the gradient normalization minimum source to source .
qreal	valueMax () const Returns the maximum data value for gradient normalization.
GradientValueSource	valueMaxSource () const Returns how the gradient normalization maximum is determined.
qreal	valueMin () const Returns the minimum data value for gradient normalization.
GradientValueSource	valueMinSource () const Returns how the gradient normalization minimum is determined.

Public Functions inherited from QAccelPlot::LineCurveEffect¶

See QAccelPlot::LineCurveEffect

Type	Name
	LineCurveEffect (QObject * parent=nullptr) Constructs an LineCurveEffect with the given__parent .
bool	enabled () const Returns `true` if the effect is active.
virtual void	refresh () Re-reads inputs that can change without a notification and emits `effectChanged()` if they did.
void	setEnabled (bool enabled) Sets the effect's enabled state to enabled .

Detailed Description¶

Attach to LineCurve::effects to render a shaded fill between the curve and a configurable baseline. The color stops come from colormap when set, otherwise from a Qt Gradient assigned to gradient. direction sets the axis the colors vary along.

Public Properties Documentation¶

property baseline¶

Where the filled area's baseline starts (axis minimum or a fixed value).

GradientFillBaseline QAccelPlot::GradientFill::baseline;

property baselineValue¶

Fixed baseline data value used when baseline isGradientFillBaseline.Value .

qreal QAccelPlot::GradientFill::baselineValue;

property colormap¶

Colormap supplying the color stops. Overridesgradient when set.

Colormap* QAccelPlot::GradientFill::colormap;

Only the ramp is used. Colormap::min, Colormap::max, and Colormap::logScale are ignored; valueMin and valueMax place the ramp instead.

property direction¶

Axis along which the gradient color varies:Qt.Horizontal for X values,Qt.Vertical for Y values. Default:Qt.Horizontal .

Qt::Orientation QAccelPlot::GradientFill::direction;

property gradient¶

A Qt Gradient (or compatible) object supplying the color stops.

QObject* QAccelPlot::GradientFill::gradient;

property opacity¶

Overall opacity of the fill area in [0, 1]. Default: 0.35.

qreal QAccelPlot::GradientFill::opacity;

Applies to the fill only. The curve's opacity and the opacity of its parent items also apply, so the rendered fill alpha is the product of all of them.

property valueMax¶

Data-space value that maps to gradient position 1.0. Only used when valueMaxSource is Fixed.

qreal QAccelPlot::GradientFill::valueMax;

property valueMaxSource¶

How the gradient normalization maximum is determined; see GradientValueSource .

GradientValueSource QAccelPlot::GradientFill::valueMaxSource;

property valueMin¶

Data-space value that maps to gradient position 0.0. Only used when valueMinSource is Fixed.

qreal QAccelPlot::GradientFill::valueMin;

property valueMinSource¶

How the gradient normalization minimum is determined; see GradientValueSource .

GradientValueSource QAccelPlot::GradientFill::valueMinSource;

Public Signals Documentation¶

signal baselineChanged¶

Emitted when the baseline property changes.

void QAccelPlot::GradientFill::baselineChanged;

signal baselineValueChanged¶

Emitted when the baselineValue property changes.

void QAccelPlot::GradientFill::baselineValueChanged;

signal colormapChanged¶

Emitted when the colormap property changes.

void QAccelPlot::GradientFill::colormapChanged;

signal directionChanged¶

Emitted when the direction property changes.

void QAccelPlot::GradientFill::directionChanged;

signal gradientChanged¶

Emitted when the gradient property changes.

void QAccelPlot::GradientFill::gradientChanged;

signal opacityChanged¶

Emitted when the opacity property changes.

void QAccelPlot::GradientFill::opacityChanged;

signal valueMaxChanged¶

Emitted when the valueMax property changes.

void QAccelPlot::GradientFill::valueMaxChanged;

signal valueMaxSourceChanged¶

Emitted when the valueMaxSource property changes.

void QAccelPlot::GradientFill::valueMaxSourceChanged;

signal valueMinChanged¶

Emitted when the valueMin property changes.

void QAccelPlot::GradientFill::valueMinChanged;

signal valueMinSourceChanged¶

Emitted when the valueMinSource property changes.

void QAccelPlot::GradientFill::valueMinSourceChanged;

Public Functions Documentation¶

function GradientFill¶

Constructs a GradientFill with the given__parent .

explicit QAccelPlot::GradientFill::GradientFill (
    QObject * parent=nullptr
)

function baseline¶

Returns the baseline mode.

GradientFillBaseline QAccelPlot::GradientFill::baseline () const

function baselineValue¶

Returns the fixed baseline data value.

qreal QAccelPlot::GradientFill::baselineValue () const

function colormap¶

Returns the colormap supplying color stops, or nullptr whengradient supplies them.

Colormap * QAccelPlot::GradientFill::colormap () const

function direction¶

Returns the gradient direction.

Qt::Orientation QAccelPlot::GradientFill::direction () const

function gradient¶

Returns the Qt Gradient object supplying color stops.

QObject * QAccelPlot::GradientFill::gradient () const

function opacity¶

Returns the fill opacity.

qreal QAccelPlot::GradientFill::opacity () const

function payload¶

Returns a snapshot of all fill parameters, updated on the GUI thread when the effect changes.

const GradientFillPayload & QAccelPlot::GradientFill::payload () const

Does not read the QML gradient, so updatePaintNode() can call it on the render thread.

function refresh¶

Re-reads the gradient stops, which can change without a notification, and emitseffectChanged() if they differ from the snapshot.

virtual void QAccelPlot::GradientFill::refresh () override

Implements QAccelPlot::LineCurveEffect::refresh

function setBaseline¶

Sets the baseline mode to baseline .

void QAccelPlot::GradientFill::setBaseline (
    GradientFillBaseline baseline
)

function setBaselineValue¶

Sets the fixed baseline data value to value .

void QAccelPlot::GradientFill::setBaselineValue (
    qreal value
)

function setColormap¶

Sets the colormap to colormap . Passnullptr to take the stops fromgradient .

void QAccelPlot::GradientFill::setColormap (
    Colormap * colormap
)

function setDirection¶

Sets the gradient direction to direction .

void QAccelPlot::GradientFill::setDirection (
    Qt::Orientation direction
)

function setGradient¶

Sets the Qt Gradient object to gradient .

void QAccelPlot::GradientFill::setGradient (
    QObject * gradient
)

function setOpacity¶

Sets the fill opacity to value .

void QAccelPlot::GradientFill::setOpacity (
    qreal value
)

function setValueMax¶

Sets the maximum data value for gradient normalization to value .

void QAccelPlot::GradientFill::setValueMax (
    qreal value
)

function setValueMaxSource¶

Sets the gradient normalization maximum source to source .

void QAccelPlot::GradientFill::setValueMaxSource (
    GradientValueSource source
)

function setValueMin¶

Sets the minimum data value for gradient normalization to value .

void QAccelPlot::GradientFill::setValueMin (
    qreal value
)

function setValueMinSource¶

Sets the gradient normalization minimum source to source .

void QAccelPlot::GradientFill::setValueMinSource (
    GradientValueSource source
)

function valueMax¶

Returns the maximum data value for gradient normalization.

qreal QAccelPlot::GradientFill::valueMax () const

function valueMaxSource¶

Returns how the gradient normalization maximum is determined.

GradientValueSource QAccelPlot::GradientFill::valueMaxSource () const

function valueMin¶

Returns the minimum data value for gradient normalization.

qreal QAccelPlot::GradientFill::valueMin () const

function valueMinSource¶

Returns how the gradient normalization minimum is determined.

GradientValueSource QAccelPlot::GradientFill::valueMinSource () const

The documentation for this class was generated from the following file QAccelPlot/src/QAccelPlot/effects/GradientFill.hpp