LineChart

#include <LineChart.h>

Inheritance diagram for LineChart:

[legend]

Properties
ChartDataSource *	fillColorSource

qreal	fillOpacity

bool	interpolate

qreal	lineWidth

QQmlComponent *	pointDelegate

Properties inherited from XYChart
Direction	direction

bool	stacked

RangeGroup *	xRange

RangeGroup *	yRange

Properties inherited from Chart
ChartDataSource *	colorSource

int	highlight

IndexingMode	indexingMode

ChartDataSource *	nameSource

ChartDataSource *	shortNameSource

QQmlListProperty< ChartDataSource >	valueSources

Properties inherited from QQuickItem
	activeFocus

	activeFocusOnTab

	antialiasing

	baselineOffset

	childrenRect

	clip

	containmentMask

	enabled

	focus

	height

	implicitHeight

	implicitWidth

	opacity

	parent

	rotation

	scale

	smooth

	state

	transformOrigin

	visible

	width

	x

	y

	z

Properties inherited from QObject
	objectName

Public Member Functions
	LineChart (QQuickItem *parent=nullptr)

ChartDataSource *	fillColorSource () const

Q_SIGNAL void	fillColorSourceChanged ()

qreal	fillOpacity () const

Q_SIGNAL void	fillOpacityChanged ()

bool	interpolate () const

Q_SIGNAL void	interpolateChanged ()

qreal	lineWidth () const

Q_SIGNAL void	lineWidthChanged ()

QQmlComponent *	pointDelegate () const

Q_SIGNAL void	pointDelegateChanged ()

void	setFillColorSource (ChartDataSource *newFillColorSource)

void	setFillOpacity (qreal opacity)

void	setInterpolate (bool newInterpolate)

void	setLineWidth (qreal width)

void	setPointDelegate (QQmlComponent *newPointDelegate)

Public Member Functions inherited from XYChart
	XYChart (QQuickItem *parent=nullptr)

	~XYChart () override=default

ComputedRange	computedRange () const

Q_SIGNAL void	computedRangeChanged ()

virtual XYChart::Direction	direction () const

Q_SIGNAL void	directionChanged ()

virtual void	setDirection (XYChart::Direction newDirection)

void	setStacked (bool newStacked)

bool	stacked () const

Q_SIGNAL void	stackedChanged ()

virtual RangeGroup *	xRange () const

virtual RangeGroup *	yRange () const

Public Member Functions inherited from Chart
	Chart (QQuickItem *parent=nullptr)

ChartDataSource *	colorSource () const

Q_SIGNAL void	colorSourceChanged ()

Q_SIGNAL void	dataChanged ()

int	highlight () const

Q_SIGNAL void	highlightChanged ()

IndexingMode	indexingMode () const

Q_SIGNAL void	indexingModeChanged ()

Q_INVOKABLE void	insertValueSource (int index, ChartDataSource *source)

ChartDataSource *	nameSource () const

Q_SIGNAL void	nameSourceChanged ()

Q_INVOKABLE void	removeValueSource (int index)

Q_INVOKABLE void	removeValueSource (QObject *source)

void	resetHighlight ()

void	setColorSource (ChartDataSource *colorSource)

void	setHighlight (int highlight)

void	setIndexingMode (IndexingMode newIndexingMode)

void	setNameSource (ChartDataSource *nameSource)

void	setShortNameSource (ChartDataSource *shortNameSource)

ChartDataSource *	shortNameSource () const

Q_SIGNAL void	shortNameSourceChanged ()

QList< ChartDataSource * >	valueSources () const

Q_SIGNAL void	valueSourcesChanged ()

DataSourcesProperty	valueSourcesProperty ()

Public Member Functions inherited from QQuickItem
	QQuickItem (QQuickItem *parent)

Qt::MouseButtons	acceptedMouseButtons () const const

bool	acceptHoverEvents () const const

bool	acceptTouchEvents () const const

void	activeFocusChanged (bool)

bool	activeFocusOnTab () const const

void	activeFocusOnTabChanged (bool)

bool	antialiasing () const const

void	antialiasingChanged (bool)

qreal	baselineOffset () const const

void	baselineOffsetChanged (qreal)

QBindable< qreal >	bindableHeight ()

QBindable< qreal >	bindableWidth ()

QBindable< qreal >	bindableX ()

QBindable< qreal >	bindableY ()

virtual QRectF	boundingRect () const const

QQuickItem *	childAt (qreal x, qreal y) const const

QList< QQuickItem * >	childItems () const const

QRectF	childrenRect ()

void	childrenRectChanged (const QRectF &)

bool	clip () const const

void	clipChanged (bool)

virtual QRectF	clipRect () const const

QObject *	containmentMask () const const

void	containmentMaskChanged ()

virtual bool	contains (const QPointF &point) const const

QCursor	cursor () const const

void	dumpItemTree () const const

void	enabledChanged ()

void	ensurePolished ()

bool	filtersChildMouseEvents () const const

Flags	flags () const const

void	focusChanged (bool)

void	forceActiveFocus ()

void	forceActiveFocus (Qt::FocusReason reason)

void	grabMouse ()

QSharedPointer< QQuickItemGrabResult >	grabToImage (const QSize &targetSize)

void	grabTouchPoints (const QList< int > &ids)

bool	hasActiveFocus () const const

bool	hasFocus () const const

qreal	height () const const

void	heightChanged ()

qreal	implicitHeight () const const

void	implicitHeightChanged ()

qreal	implicitWidth () const const

void	implicitWidthChanged ()

virtual QVariant	inputMethodQuery (Qt::InputMethodQuery query) const const

bool	isAncestorOf (const QQuickItem *child) const const

bool	isEnabled () const const

bool	isFocusScope () const const

virtual bool	isTextureProvider () const const

bool	isVisible () const const

bool	keepMouseGrab () const const

bool	keepTouchGrab () const const

QPointF	mapFromGlobal (const QPointF &point) const const

QPointF	mapFromItem (const QQuickItem *item, const QPointF &point) const const

QPointF	mapFromScene (const QPointF &point) const const

QRectF	mapRectFromItem (const QQuickItem *item, const QRectF &rect) const const

QRectF	mapRectFromScene (const QRectF &rect) const const

QRectF	mapRectToItem (const QQuickItem *item, const QRectF &rect) const const

QRectF	mapRectToScene (const QRectF &rect) const const

QPointF	mapToGlobal (const QPointF &point) const const

QPointF	mapToItem (const QQuickItem *item, const QPointF &point) const const

QPointF	mapToScene (const QPointF &point) const const

QQuickItem *	nextItemInFocusChain (bool forward)

qreal	opacity () const const

void	opacityChanged ()

void	parentChanged (QQuickItem *)

QQuickItem *	parentItem () const const

void	polish ()

void	resetAntialiasing ()

void	resetHeight ()

void	resetWidth ()

qreal	rotation () const const

void	rotationChanged ()

qreal	scale () const const

void	scaleChanged ()

QQuickItem *	scopedFocusItem () const const

void	setAcceptedMouseButtons (Qt::MouseButtons buttons)

void	setAcceptHoverEvents (bool enabled)

void	setAcceptTouchEvents (bool enabled)

void	setActiveFocusOnTab (bool)

void	setAntialiasing (bool)

void	setBaselineOffset (qreal)

void	setClip (bool)

void	setContainmentMask (QObject *mask)

void	setCursor (const QCursor &cursor)

void	setEnabled (bool)

void	setFiltersChildMouseEvents (bool filter)

void	setFlag (Flag flag, bool enabled)

void	setFlags (Flags flags)

void	setFocus (bool focus, Qt::FocusReason reason)

void	setFocus (bool)

void	setHeight (qreal)

void	setImplicitHeight (qreal)

void	setImplicitWidth (qreal)

void	setKeepMouseGrab (bool keep)

void	setKeepTouchGrab (bool keep)

void	setOpacity (qreal)

void	setParentItem (QQuickItem *parent)

void	setRotation (qreal)

void	setScale (qreal)

void	setSize (const QSizeF &size)

void	setSmooth (bool)

void	setState (const QString &)

void	setTransformOrigin (TransformOrigin)

void	setVisible (bool)

void	setWidth (qreal)

void	setX (qreal)

void	setY (qreal)

void	setZ (qreal)

QSizeF	size () const const

bool	smooth () const const

void	smoothChanged (bool)

void	stackAfter (const QQuickItem *sibling)

void	stackBefore (const QQuickItem *sibling)

QString	state () const const

void	stateChanged (const QString &)

virtual QSGTextureProvider *	textureProvider () const const

TransformOrigin	transformOrigin () const const

void	transformOriginChanged (TransformOrigin)

void	ungrabMouse ()

void	ungrabTouchPoints ()

void	unsetCursor ()

void	update ()

QQuickItem *	viewportItem () const const

void	visibleChanged ()

qreal	width () const const

void	widthChanged ()

QQuickWindow *	window () const const

void	windowChanged (QQuickWindow *window)

qreal	x () const const

void	xChanged ()

qreal	y () const const

void	yChanged ()

qreal	z () const const

void	zChanged ()

Public Member Functions inherited from QObject
	QObject (QObject *parent)

QBindable< QString >	bindableObjectName ()

bool	blockSignals (bool block)

const QObjectList &	children () const const

QMetaObject::Connection	connect (const QObject sender, const char signal, const char *method, Qt::ConnectionType type) const const

void	deleteLater ()

void	destroyed (QObject *obj)

bool	disconnect (const char signal, const QObject receiver, const char *method) const const

bool	disconnect (const QObject receiver, const char method) const const

void	dumpObjectInfo () const const

void	dumpObjectTree () const const

QList< QByteArray >	dynamicPropertyNames () const const

virtual bool	eventFilter (QObject watched, QEvent event)

T	findChild (const QString &name, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const

QList< T >	findChildren (Qt::FindChildOptions options) const const

bool	inherits (const char *className) const const

void	installEventFilter (QObject *filterObj)

bool	isQuickItemType () const const

bool	isWidgetType () const const

bool	isWindowType () const const

void	killTimer (int id)

virtual const QMetaObject *	metaObject () const const

void	moveToThread (QThread *targetThread)

QString	objectName () const const

void	objectNameChanged (const QString &objectName)

QObject *	parent () const const

QVariant	property (const char *name) const const

	Q_CLASSINFO (Name, Value)

	Q_EMIT Q_EMIT

	Q_ENUM (...)

	Q_ENUM_NS (...)

	Q_ENUMS (...)

	Q_FLAG (...)

	Q_FLAG_NS (...)

	Q_FLAGS (...)

	Q_GADGET Q_GADGET

	Q_GADGET_EXPORT (EXPORT_MACRO)

	Q_INTERFACES (...)

	Q_INVOKABLE Q_INVOKABLE

	Q_MOC_INCLUDE Q_MOC_INCLUDE

	Q_NAMESPACE Q_NAMESPACE

	Q_NAMESPACE_EXPORT (EXPORT_MACRO)

	Q_OBJECT Q_OBJECT

	Q_PROPERTY (...)

	Q_REVISION Q_REVISION

	Q_SET_OBJECT_NAME (Object)

	Q_SIGNAL Q_SIGNAL

	Q_SIGNALS Q_SIGNALS

	Q_SLOT Q_SLOT

	Q_SLOTS Q_SLOTS

T	qobject_cast (const QObject *object)

T	qobject_cast (QObject *object)

	QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT

void	removeEventFilter (QObject *obj)

void	setObjectName (const QString &name)

void	setObjectName (QAnyStringView name)

void	setParent (QObject *parent)

bool	setProperty (const char *name, const QVariant &value)

bool	setProperty (const char *name, QVariant &&value)

bool	signalsBlocked () const const

int	startTimer (int interval, Qt::TimerType timerType)

int	startTimer (std::chrono::milliseconds interval, Qt::TimerType timerType)

QThread *	thread () const const

Public Member Functions inherited from QQmlParserStatus

Static Public Member Functions
static LineChartAttached *	qmlAttachedProperties (QObject *object)

Static Public Member Functions inherited from QObject
QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject context, Functor functor, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)

bool	disconnect (const QMetaObject::Connection &connection)

bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char method)

bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method)

bool	disconnect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method)

QString	tr (const char sourceText, const char disambiguation, int n)

Protected Member Functions
void	geometryChange (const QRectF &newGeometry, const QRectF &oldGeometry) override

void	onDataChanged () override

QSGNode *	updatePaintNode (QSGNode node, QQuickItem::UpdatePaintNodeData data) override

void	updatePolish () override

Protected Member Functions inherited from XYChart
void	setComputedRange (ComputedRange range)

virtual void	updateComputedRange ()

Protected Member Functions inherited from Chart
void	componentComplete () override

QColor	desaturate (const QColor &input)

Protected Member Functions inherited from QQuickItem
virtual bool	childMouseEventFilter (QQuickItem item, QEvent event)

virtual void	classBegin () override

virtual void	dragEnterEvent (QDragEnterEvent *event)

virtual void	dragLeaveEvent (QDragLeaveEvent *event)

virtual void	dragMoveEvent (QDragMoveEvent *event)

virtual void	dropEvent (QDropEvent *event)

virtual bool	event (QEvent *ev) override

virtual void	focusInEvent (QFocusEvent *)

virtual void	focusOutEvent (QFocusEvent *)

bool	heightValid () const const

virtual void	hoverEnterEvent (QHoverEvent *event)

virtual void	hoverLeaveEvent (QHoverEvent *event)

virtual void	hoverMoveEvent (QHoverEvent *event)

virtual void	inputMethodEvent (QInputMethodEvent *event)

bool	isComponentComplete () const const

virtual void	itemChange (ItemChange change, const ItemChangeData &value)

virtual void	keyPressEvent (QKeyEvent *event)

virtual void	keyReleaseEvent (QKeyEvent *event)

virtual void	mouseDoubleClickEvent (QMouseEvent *event)

virtual void	mouseMoveEvent (QMouseEvent *event)

virtual void	mousePressEvent (QMouseEvent *event)

virtual void	mouseReleaseEvent (QMouseEvent *event)

virtual void	mouseUngrabEvent ()

virtual void	releaseResources ()

virtual void	touchEvent (QTouchEvent *event)

virtual void	touchUngrabEvent ()

void	updateInputMethod (Qt::InputMethodQueries queries)

virtual QSGNode *	updatePaintNode (QSGNode oldNode, UpdatePaintNodeData updatePaintNodeData)

virtual void	wheelEvent (QWheelEvent *event)

bool	widthValid () const const

Protected Member Functions inherited from QObject
virtual void	childEvent (QChildEvent *event)

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	customEvent (QEvent *event)

virtual void	disconnectNotify (const QMetaMethod &signal)

bool	isSignalConnected (const QMetaMethod &signal) const const

int	receivers (const char *signal) const const

QObject *	sender () const const

int	senderSignalIndex () const const

virtual void	timerEvent (QTimerEvent *event)

Additional Inherited Members
Public Types inherited from XYChart
enum class	Direction { ZeroAtStart , ZeroAtEnd }

Public Types inherited from Chart
using	DataSourcesProperty = QQmlListProperty<ChartDataSource>

enum	IndexingMode { IndexSourceValues = 1 , IndexEachSource , IndexAllValues }

Public Types inherited from QQuickItem
enum	Flag

typedef	Flags

enum	ItemChange

enum	TransformOrigin

Public Types inherited from QObject
typedef	QObjectList

Public Attributes inherited from QQuickItem
	Bottom

	BottomLeft

	BottomRight

	Center

	ItemAcceptsDrops

	ItemAcceptsInputMethod

	ItemActiveFocusHasChanged

	ItemAntialiasingHasChanged

	ItemChildAddedChange

	ItemChildRemovedChange

	ItemClipsChildrenToShape

	ItemDevicePixelRatioHasChanged

	ItemEnabledHasChanged

	ItemHasContents

	ItemIsFocusScope

	ItemIsViewport

	ItemObservesViewport

	ItemOpacityHasChanged

	ItemParentHasChanged

	ItemRotationHasChanged

	ItemSceneChange

	ItemVisibleHasChanged

	Left

	Right

	Top

	TopLeft

	TopRight

Detailed Description

A line chart.

Usage example

import QtQuick
import QtQuick.Controls
 
import org.kde.quickcharts as Charts
 
Charts.LineChart {
    width: 400
    height: 300
 
    valueSources: [
        Charts.ModelSource { roleName: "value1"; model: listModel },
        Charts.ModelSource { roleName: "value2"; model: listModel },
        Charts.ModelSource { roleName: "value3"; model: listModel }
    ]
    colorSource: Charts.ArraySource { array: ["red", "green", "blue"] }
    nameSource: Charts.ArraySource { array: ["Example 1", "Example 2", "Example 3"]}
 
    ListModel {
        id: listModel
 
        ListElement { value1: 19; value2: 2; value3: 6 }
        ListElement { value1: 14; value2: 20; value3: 17 }
        ListElement { value1: 4; value2: 10; value3: 11 }
        ListElement { value1: 5; value2: 11; value3: 9 }
        ListElement { value1: 20; value2: 7; value3: 13 }
    }
}

The resulting line chart.

Definition at line 80 of file LineChart.h.

Property Documentation

◆ fillColorSource

ChartDataSource * LineChart::fillColorSource

readwrite

A data source that supplies color values for the line charts' fill area.

If this is not set (the default), the normal color source will be used, with the fillOpacity used as its opacity.

Definition at line 119 of file LineChart.h.

◆ fillOpacity

qreal LineChart::fillOpacity

readwrite

The opacity of the area below a line.

The default is 0.0. Note that if fillColorSource is set, this value is ignored.

Definition at line 109 of file LineChart.h.

◆ interpolate

bool LineChart::interpolate

readwrite

Interpolate the values in the chart so that the lines become smoothed.

Definition at line 92 of file LineChart.h.

◆ lineWidth

qreal LineChart::lineWidth

readwrite

The width of a line in the chart.

Definition at line 99 of file LineChart.h.

◆ pointDelegate

QQmlComponent * LineChart::pointDelegate

readwrite

A delegate that will be placed at each line chart point.

When this is not null, the specified component will be used to instantiate an object for each point in the chart. These objects will then be placed centered at positions corresponding to the points on the chart. Each instance will have access to the attached properties of LineChartAttached through LineChart attached object.

Note: The component assigned to this property is expected to create a QQuickItem, since the created object needs to be positioned.

Definition at line 135 of file LineChart.h.

Constructor & Destructor Documentation

◆ LineChart()

LineChart::LineChart ( QQuickItem * parent = nullptr )

explicit

Definition at line 106 of file LineChart.cpp.

Member Function Documentation

◆ fillColorSource()

ChartDataSource * LineChart::fillColorSource ( ) const

Definition at line 159 of file LineChart.cpp.

◆ fillOpacity()

qreal LineChart::fillOpacity ( ) const

Definition at line 121 of file LineChart.cpp.

◆ geometryChange()

void LineChart::geometryChange	(	const QRectF &	newGeometry,
		const QRectF &	oldGeometry )

overrideprotectedvirtual

Reimplemented from QQuickItem.

Definition at line 325 of file LineChart.cpp.

◆ interpolate()

bool LineChart::interpolate ( ) const

Definition at line 111 of file LineChart.cpp.

◆ lineWidth()

qreal LineChart::lineWidth ( ) const

Definition at line 116 of file LineChart.cpp.

◆ onDataChanged()

void LineChart::onDataChanged ( )

overrideprotectedvirtual

Called when the data of a value source changes.

This method should be reimplemented by subclasses. It is called whenever the data of one of the value sources changes. Subclasses should use this to make sure that they update whatever internal state they use for rendering, then call update() to schedule rendering the item.

Implements Chart.

Definition at line 319 of file LineChart.cpp.

◆ pointDelegate()

QQmlComponent * LineChart::pointDelegate ( ) const

Definition at line 175 of file LineChart.cpp.

◆ qmlAttachedProperties()

static LineChartAttached * LineChart::qmlAttachedProperties ( QObject * object )

inlinestatic

Definition at line 140 of file LineChart.h.

◆ setFillColorSource()

void LineChart::setFillColorSource ( ChartDataSource * newFillColorSource )

Definition at line 164 of file LineChart.cpp.

◆ setFillOpacity()

void LineChart::setFillOpacity ( qreal opacity )

Definition at line 148 of file LineChart.cpp.

◆ setInterpolate()

void LineChart::setInterpolate ( bool newInterpolate )

Definition at line 126 of file LineChart.cpp.

◆ setLineWidth()

void LineChart::setLineWidth ( qreal width )

Definition at line 137 of file LineChart.cpp.

◆ setPointDelegate()

void LineChart::setPointDelegate ( QQmlComponent * newPointDelegate )

Definition at line 180 of file LineChart.cpp.

◆ updatePaintNode()

QSGNode * LineChart::updatePaintNode	(	QSGNode *	node,
		QQuickItem::UpdatePaintNodeData *	data )

overrideprotected

Definition at line 271 of file LineChart.cpp.

◆ updatePolish()

void LineChart::updatePolish ( )

overrideprotectedvirtual

Reimplemented from QQuickItem.

Definition at line 195 of file LineChart.cpp.

The documentation for this class was generated from the following files:

KDE's Doxygen guidelines are available online.

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About KQuickCharts

LineChart

Properties

Public Member Functions

Static Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Usage example

Property Documentation

◆ fillColorSource

◆ fillOpacity

◆ interpolate

◆ lineWidth

◆ pointDelegate

Constructor & Destructor Documentation

◆ LineChart()

Member Function Documentation

◆ fillColorSource()

◆ fillOpacity()

◆ geometryChange()

◆ interpolate()

◆ lineWidth()

◆ onDataChanged()

◆ pointDelegate()

◆ qmlAttachedProperties()

◆ setFillColorSource()

◆ setFillOpacity()

◆ setInterpolate()

◆ setLineWidth()

◆ setPointDelegate()

◆ updatePaintNode()

◆ updatePolish()