A EWidget to display line chartsThe title of the whole chart can be set by setTitle(). Afterwards set the title of the x- (setXTitle()) and y-axis (setYTitle()). Now configure the x- and y-axis with setXTicks() and setYTicks(). The chart is configured now and you can add lines with addDataSet(). Make sure, that the values are added in the order of x- and y-ticks. If x-ticks and y-ticks are not numeric, x- and y-values can only contain exactly the values from x-ticks and y-ticks. More...

#include <echartline.h>

Inheritance diagram for EChartLine:

Collaboration diagram for EChartLine:

Public Member Functions
	EChartLine (QWidget *parent=NULL)

void	setYTitle (QString yTitle)

QString	yTitle () const

void	setXTitle (QString xTitle)

QString	xTitle () const

void	setXTicksAngle (int angle)

int	xTicksAngle () const
	Returns the angle of the x-ticks labels. More...

void	setXTicks (const QList< QVariant > xTicks)

void	setYTicks (const QList< QVariant > yTicks)

Public Member Functions inherited from EChartBase
	EChartBase (QWidget *parent=NULL)

void	setChartTitle (QString chartTitle)

QString	chartTitle () const

void	setNumberPrecision (int precision)

int	numberPrecision () const

void	setNumberFormat (char format)

char	numberFormat () const

void	addDataSet (EChartValues dataSet, const QString label, QColor color=QColor())
	Adds a new line to the graph. More...

bool	removeDataSet (const QString label)

void	setTitleFont (QFont font)

QFont	titleFont () const

void	setLabelFont (QFont font)

QFont	labelFont () const

EAction *	exportAction () const

Public Member Functions inherited from EWidget
	EWidget (QWidget *parent=0, Qt::WindowFlags flags=0)

virtual	~EWidget ()

void	setWindowTitle (const QString &title)

void	connectByPass (QObject *object)
	Connects all standard signals. More...

Protected Member Functions
void	drawChart (QPainter *painter, QRect viewPort)
	Function to draw the chart. More...

void	mouseMoveEvent (QMouseEvent *event)
	Used to display the measurements. More...

Protected Member Functions inherited from EChartBase
void	paintEvent (QPaintEvent *event)

Protected Member Functions inherited from EWidget
void	addManagedDockWidget (QDockWidget *widget, const Qt::DockWidgetArea &area, QString actionLabel=QString(), QString actionParent=QString())
	Adds an dock widget via addNewDockWidget() and adds `widget` to the list of managed dock widgets. More...

Properties
QString	xTitle

QString	yTitle

int	xTicksAngle

Properties inherited from EChartBase
QString	chartTitle

int	numberPrecision

char	numberFormat

QFont	titleFont

QFont	labelFont

Private Member Functions
float	linearInterpolation (const float dy, const float x1, const float x0, const float y0, const float x) const

Private Attributes
QString	myXTitle

QString	myYTitle

QList< QVariant >	xTicks

QList< QVariant >	yTicks

bool	xNumeric

bool	yNumeric

QMap< QString, QList< QPointF > >	linesDrawn

QPoint	origin

QPoint	currentPosition

qreal	currentXValue

qreal	currentYValue

int	myXTicksAngle

Additional Inherited Members
Public Slots inherited from EChartBase
void	exportChart ()

void	exportChart (QPainter *painter, QRect boundingRect)

void	clear ()

Public Slots inherited from EWidget
virtual EngSaS::AvailableActions	enableActions ()
	Will be called by EMainWindow::setCentralWidget() to enable and disable standard actions. More...

virtual QString	fileFilters (EngSaS::FileFilter reason)

virtual bool	load (QFile *file, QString &error)

virtual bool	save (QFile *file, QString &error)

virtual bool	fileNew (QString &error)

virtual bool	print (QString &error)

virtual bool	undo (QString &error)

virtual bool	redo (QString &error)

virtual bool	cut (QString &error)

virtual bool	copy (QString &error)

virtual bool	paste (QString &error)

virtual bool	reload (QString &error)

virtual void	reloadSettings ()
	Used to reload settings the settings. More...

Signals inherited from EWidget
void	error (const QString &message)

void	warning (const QString &message)

void	information (const QString &message)

void	reloadEnableActions ()
	Request reloading of enabled actions in EMainWindow. More...

void	addMenu (QMenu *newMenu, const QString &parent, QString before=QString())

void	addAction (QAction *newAction, const QString &parent, QString before=QString())

void	addToolBar (QToolBar *newToolBar, Qt::ToolBarArea area=Qt::TopToolBarArea)

void	addNewDockWidget (QDockWidget *widget, const Qt::DockWidgetArea &area)
	To add managed dock widgets, use addManagedDockWidget() instead. More...

void	setCentralWidget (QWidget *centralWidget)

void	showSettings ()

void	showHelp (const QString &page)

void	showStatusWidget (QWidget *widget)

void	reloadSettingsRequest ()
	Indicates, that a reload of the settings is needed. More...

void	doReloadSettings ()
	Emitted to bring the reload request back to the farest child. More...

Protected Slots inherited from EChartBase
virtual void	contextMenu (QPoint pos) const
	This slot is called, if the context menu of this chart should be shown. More...

Protected Slots inherited from EWidget
virtual void	errorByPass (const QString &message)

virtual void	warningByPass (const QString &message)

virtual void	informationByPass (const QString &message)

virtual void	reloadEnableActionsByPass ()

virtual void	addMenuByPass (QMenu *newMenu, const QString &parent, QString before=QString())

virtual void	addActionByPass (QAction *newAction, const QString &parent, QString before=QString())

virtual void	addToolBarByPass (QToolBar *newToolBar, Qt::ToolBarArea area=Qt::TopToolBarArea)

virtual void	addNewDockWidgetByPass (QDockWidget *widget, const Qt::DockWidgetArea &area)

virtual void	setCentralWidgetByPass (QWidget *centralWidget)

virtual void	showSettingsByPass ()

virtual void	showHelpByPass (const QString &page)

virtual void	showStatusWidgetByPass (QWidget *widget)

virtual void	reloadSettingsRequestByPass ()

Protected Attributes inherited from EChartBase
int	marginHorizontal

int	marginVertical

QRect	viewPort

QStringList	colorNames

QList< void()(QPainter , QPoint)>	markers

QMap< QString, EChartValues >	dataSets

QMap< QString, QColor >	dataSetsColors

QMap< QString, void()(QPainter , QPoint)>	dataSetsMarkers

Detailed Description

A EWidget to display line charts

The title of the whole chart can be set by setTitle(). Afterwards set the title of the x- (setXTitle()) and y-axis (setYTitle()). Now configure the x- and y-axis with setXTicks() and setYTicks(). The chart is configured now and you can add lines with addDataSet(). Make sure, that the values are added in the order of x- and y-ticks. If x-ticks and y-ticks are not numeric, x- and y-values can only contain exactly the values from x-ticks and y-ticks.

If chart is numeric (x-ticks and y-ticks contains only numeric values) the precision and the format of the displayed numbers can be configured with setNumberPrecision() and setNumberFormat(). Per default the format is 'f' and the precision 2 (e. g. 123.45).

Todo:

calculate the linesDrawn only if line is added, the x- or y-ticks are changed or the widget size is changed.

Provide context menu to export chart values and chart as image

Constructor & Destructor Documentation

EChartLine::EChartLine ( QWidget * parent = NULL )

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Member Function Documentation

void EChartLine::drawChart	(	QPainter *	painter,
		QRect	viewPort
	)

protectedvirtual

Function to draw the chart.

It is called by the overladed paintEvent() function and also used to export the chart into an image.

Note: Make sure to restore the painter afterwards!

Implements EChartBase.

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float EChartLine::linearInterpolation	(	const float	dy,
		const float	x1,
		const float	x0,
		const float	y0,
		const float	x
	)		const

private

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void EChartLine::mouseMoveEvent ( QMouseEvent * event )

protected

Used to display the measurements.

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void EChartLine::setXTicks ( const QList< QVariant > xTicks )

void EChartLine::setXTicksAngle ( int angle )

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void EChartLine::setXTitle ( QString xTitle )

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void EChartLine::setYTicks ( const QList< QVariant > yTicks )

void EChartLine::setYTitle ( QString yTitle )

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int EChartLine::xTicksAngle ( ) const

Returns the angle of the x-ticks labels.

0degree is horizontal and than it turns clockwise (e. g. vertical from top to bottom is equal to 90degree). Default is 0 and maximum is 360degree.

See also: setXTicksAngle()

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QString EChartLine::xTitle ( ) const

inline

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QString EChartLine::yTitle ( ) const

inline

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Member Data Documentation

QPoint EChartLine::currentPosition

private

qreal EChartLine::currentXValue

private

qreal EChartLine::currentYValue

private

QMap<QString, QList<QPointF> > EChartLine::linesDrawn

private

The points currently used to draw the lines

int EChartLine::myXTicksAngle

private

QString EChartLine::myXTitle

private

QString EChartLine::myYTitle

private

QPoint EChartLine::origin

private

bool EChartLine::xNumeric

private

QList<QVariant> EChartLine::xTicks

private

bool EChartLine::yNumeric

private

QList<QVariant> EChartLine::yTicks

private

Property Documentation

int EChartLine::xTicksAngle

readwriteprivate

QString EChartLine::xTitle

readwriteprivate

QString EChartLine::yTitle

readwriteprivate

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

/home/abuild/rpmbuild/BUILD/libengsas-0.6.0/src/lib/charts/echartline.h
/home/abuild/rpmbuild/BUILD/libengsas-0.6.0/src/lib/charts/echartline.cpp

Public Member Functions

Protected Member Functions

Properties

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

Property Documentation