BarChart

#include <BarChart.h>

Inheritance diagram for BarChart:

[legend]

Public Types
enum	Orientation { HorizontalOrientation = Qt::Horizontal , VerticalOrientation = Qt::Vertical }

enum	WidthMode { AutoWidth = -2 }

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

enum	ItemChange

enum	TransformOrigin

Properties
QColor	backgroundColor

qreal	barWidth

Orientation	orientation

qreal	radius

qreal	spacing

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
	BarChart (QQuickItem *parent=nullptr)

QColor	backgroundColor () const

Q_SIGNAL void	backgroundColorChanged ()

qreal	barWidth () const

Q_SIGNAL void	barWidthChanged ()

Orientation	orientation () const

Q_SIGNAL void	orientationChanged ()

qreal	radius () const

Q_SIGNAL void	radiusChanged ()

void	setBackgroundColor (const QColor &newBackgroundColor)

void	setBarWidth (qreal newBarWidth)

void	setOrientation (Orientation newOrientation)

void	setRadius (qreal newRadius)

void	setSpacing (qreal newSpacing)

qreal	spacing () const

Q_SIGNAL void	spacingChanged ()

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

Protected Member Functions
void	onDataChanged () override

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

virtual void	geometryChange (const QRectF &newGeometry, const QRectF &oldGeometry)

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	updatePolish ()

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
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)

Public Attributes inherited from QQuickItem
	Bottom

	BottomLeft

	BottomRight

	Center

typedef	Flags

	ItemAcceptsDrops

	ItemAcceptsInputMethod

	ItemActiveFocusHasChanged

	ItemAntialiasingHasChanged

	ItemChildAddedChange

	ItemChildRemovedChange

	ItemClipsChildrenToShape

	ItemDevicePixelRatioHasChanged

	ItemEnabledHasChanged

	ItemHasContents

	ItemIsFocusScope

	ItemIsViewport

	ItemObservesViewport

	ItemOpacityHasChanged

	ItemParentHasChanged

	ItemRotationHasChanged

	ItemSceneChange

	ItemVisibleHasChanged

	Left

	Right

	Top

	TopLeft

	TopRight

Public Attributes inherited from QObject
typedef	QObjectList

Detailed Description

An item to render a bar chart.

This chart renders

Usage example

import QtQuick
import QtQuick.Controls
 
import org.kde.quickcharts as Charts
 
Charts.BarChart {
    id: barChart
 
    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"] }
 
    barWidth: 20
 
    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 bar chart.

Definition at line 27 of file BarChart.h.

Member Enumeration Documentation

◆ Orientation

enum BarChart::Orientation

Enumerator
HorizontalOrientation	Bars are oriented horizontally, with low values left and high values right.
VerticalOrientation	Bars are oriented vertically, with low values at the bottom and high values at the top.

Definition at line 39 of file BarChart.h.

◆ WidthMode

enum BarChart::WidthMode

Helper enum to provide an easy way to set barWidth to auto.

Definition at line 36 of file BarChart.h.

Property Documentation

◆ backgroundColor

QColor BarChart::backgroundColor

readwrite

The background color of bars in the chart.

By default this is Qt::transparent. If set to something non-transparent, the chart will render backgrounds for the bars. These backgrounds will have the same width as the bars but stretch the full height.

Definition at line 96 of file BarChart.h.

◆ barWidth

qreal BarChart::barWidth

readwrite

The width of individual bars in the chart.

If set to WidthMode::AutoWidth (also the default), the width will be calculated automatically based on total chart width and item count.

Definition at line 64 of file BarChart.h.

◆ orientation

Orientation BarChart::orientation

readwrite

The orientation of bars in the chart.

By default this is Vertical.

Definition at line 84 of file BarChart.h.

◆ radius

qreal BarChart::radius

readwrite

The radius of the ends of bars in the chart in pixels.

By default this is 0, which means no rounding will be done.

Definition at line 74 of file BarChart.h.

◆ spacing

qreal BarChart::spacing

readwrite

The spacing between bars for each value source.

Note that spacing between each X axis value is determined automatically based on barWidth, spacing and total chart width. The default is 0.

Definition at line 53 of file BarChart.h.

Constructor & Destructor Documentation

◆ BarChart()

BarChart::BarChart ( QQuickItem * parent = nullptr )

explicit

Definition at line 16 of file BarChart.cpp.

Member Function Documentation

◆ backgroundColor()

QColor BarChart::backgroundColor ( ) const

Definition at line 86 of file BarChart.cpp.

◆ barWidth()

qreal BarChart::barWidth ( ) const

Definition at line 37 of file BarChart.cpp.

◆ onDataChanged()

void BarChart::onDataChanged ( )

overrideprotectedvirtual

Reimplemented from Chart.

Implements Chart.

Definition at line 151 of file BarChart.cpp.

◆ orientation()

BarChart::Orientation BarChart::orientation ( ) const

Definition at line 69 of file BarChart.cpp.

◆ radius()

qreal BarChart::radius ( ) const

Definition at line 53 of file BarChart.cpp.

◆ setBackgroundColor()

void BarChart::setBackgroundColor ( const QColor & newBackgroundColor )

Definition at line 91 of file BarChart.cpp.

◆ setBarWidth()

void BarChart::setBarWidth ( qreal newBarWidth )

Definition at line 42 of file BarChart.cpp.

◆ setOrientation()

void BarChart::setOrientation ( BarChart::Orientation newOrientation )

Definition at line 74 of file BarChart.cpp.

◆ setRadius()

void BarChart::setRadius ( qreal newRadius )

Definition at line 58 of file BarChart.cpp.

◆ setSpacing()

void BarChart::setSpacing ( qreal newSpacing )

Definition at line 26 of file BarChart.cpp.

◆ spacing()

qreal BarChart::spacing ( ) const

Definition at line 21 of file BarChart.cpp.

◆ updatePaintNode()

QSGNode * BarChart::updatePaintNode	(	QSGNode *	node,
		QQuickItem::UpdatePaintNodeData *	)

overrideprotected

Reimplemented from QQuickItem.

Definition at line 102 of file BarChart.cpp.

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

KDE's Doxygen guidelines are available online.

Class Picker

Quick Links

About KQuickCharts

BarChart

Public Types

Properties

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Usage example

Member Enumeration Documentation

◆ Orientation

◆ WidthMode

Property Documentation

◆ backgroundColor

◆ barWidth

◆ orientation

◆ radius

◆ spacing

Constructor & Destructor Documentation

◆ BarChart()

Member Function Documentation

◆ backgroundColor()

◆ barWidth()

◆ onDataChanged()

◆ orientation()

◆ radius()

◆ setBackgroundColor()

◆ setBarWidth()

◆ setOrientation()

◆ setRadius()

◆ setSpacing()

◆ spacing()

◆ updatePaintNode()