Abstract base class for MVC-based charts. More...

#include <Wt/Chart/WAbstractChart>

Inheritance diagram for Wt::Chart::WAbstractChart:

Public Member Functions
virtual	~WAbstractChart ()
	Destructor.
void	setModel (WAbstractItemModel *model)
	Set the model.
WAbstractItemModel *	model () const
	Returns the model.
void	setBackground (const WBrush &background)
	Sets a background for the chart.
const WBrush &	background () const
	Returns the background of the chart.
void	setPalette (WChartPalette *palette)
	Set a palette for the chart.
WChartPalette *	palette () const
	Returns the palette for the chart.
void	setPlotAreaPadding (int padding, WFlags< Side > sides=All)
	Set an internal margin for the main plot area.
int	plotAreaPadding (Side side) const
	Returns the internal margin for the main plot area.
void	setAutoLayoutEnabled (bool enabled=true)
	Configures the chart layout to be automatic.
bool	isAutoLayoutEnabled () const
	Returns whether chart layout is computed automatically.
void	setTitle (const WString &title)
	Set a chart title.
const WString &	title () const
	Return the chart title.
void	setTitleFont (const WFont &titleFont)
	Set the font for the chart title.
const WFont &	titleFont () const
	Returns the font for the chart title.
virtual void	paint (WPainter &painter, const WRectF &rectangle=WRectF()) const =0
	Paint the chart in a rectangle of the given painter.
Protected Member Functions
virtual void	modelChanged ()
	Method called whenever the entire model was changed.
virtual void	modelReset ()
	Method called whenever the entire model was reset.
virtual void	modelColumnsInserted (const WModelIndex &parent, int start, int end)=0
	Method called when colums have been inserted in the model.
virtual void	modelColumnsRemoved (const WModelIndex &parent, int start, int end)=0
	Method called when colums have been removed from the model.
virtual void	modelRowsInserted (const WModelIndex &parent, int start, int end)=0
	Method called when rows have been inserted from the model.
virtual void	modelRowsRemoved (const WModelIndex &parent, int start, int end)=0
	Method called when rows have been removed from the model.
virtual void	modelDataChanged (const WModelIndex &topLeft, const WModelIndex &bottomRight)=0
	Method called when data has been changed in the model.
virtual void	modelHeaderDataChanged (Orientation orientation, int start, int end)=0
	Method called when header data has been changed in the model.

Detailed Description

Abstract base class for MVC-based charts.

This is an abstract class and should not be used directly.

As an abstract base for MVC-based charts, this class manages the model setModel() and provides virtual methods that listen to model changes. In addition, it gives access to generic chart properties such as the title setTitle() and title font setTitleFont(), the chart palette setPalette(), plot area padding setPlotAreaPadding(), and the background fill color setBackground().

CSS

Styling through CSS is not applicable.

See also:: WCartesianChart, WPieChart

Member Function Documentation

const WBrush& Wt::Chart::WAbstractChart::background ( ) const

Returns the background of the chart.

See also:: setBackground(const WBrush&)

bool Wt::Chart::WAbstractChart::isAutoLayoutEnabled ( ) const

Returns whether chart layout is computed automatically.

See also:: setAutoLayoutEnabled()

WAbstractItemModel* Wt::Chart::WAbstractChart::model ( ) const

Returns the model.

See also:: setModel(WAbstractItemModel *)

void Wt::Chart::WAbstractChart::modelChanged ( ) [protected, virtual]

Method called whenever the entire model was changed.

See also:: setModel(WAbstractItemModel *)

Reimplemented in Wt::Chart::WCartesianChart, and Wt::Chart::WPieChart.

virtual void Wt::Chart::WAbstractChart::modelColumnsInserted	(	const WModelIndex &	parent,
		int	start,
		int	end
	)		`[protected, pure virtual]`

Method called when colums have been inserted in the model.

See also:: WAbstractItemModel::columnsInserted

Implemented in Wt::Chart::WCartesianChart, and Wt::Chart::WPieChart.

virtual void Wt::Chart::WAbstractChart::modelColumnsRemoved	(	const WModelIndex &	parent,
		int	start,
		int	end
	)		`[protected, pure virtual]`

Method called when colums have been removed from the model.

See also:: WAbstractItemModel::columnsRemoved

Implemented in Wt::Chart::WCartesianChart, and Wt::Chart::WPieChart.

virtual void Wt::Chart::WAbstractChart::modelDataChanged	(	const WModelIndex &	topLeft,
		const WModelIndex &	bottomRight
	)		`[protected, pure virtual]`

Method called when data has been changed in the model.

See also:: WAbstractItemModel::dataChanged

Implemented in Wt::Chart::WCartesianChart, and Wt::Chart::WPieChart.

virtual void Wt::Chart::WAbstractChart::modelHeaderDataChanged	(	Orientation	orientation,
		int	start,
		int	end
	)		`[protected, pure virtual]`

Method called when header data has been changed in the model.

See also:: WAbstractItemModel::headerDataChanged

Implemented in Wt::Chart::WCartesianChart, and Wt::Chart::WPieChart.

void Wt::Chart::WAbstractChart::modelReset ( ) [protected, virtual]

Method called whenever the entire model was reset.

Bound to the WAbstractItemModel::modelReset() and WAbstractItemModel::layoutChanged() signals.

Reimplemented in Wt::Chart::WCartesianChart, and Wt::Chart::WPieChart.

virtual void Wt::Chart::WAbstractChart::modelRowsInserted	(	const WModelIndex &	parent,
		int	start,
		int	end
	)		`[protected, pure virtual]`

Method called when rows have been inserted from the model.

See also:: WAbstractItemModel::rowsInserted

Implemented in Wt::Chart::WCartesianChart, and Wt::Chart::WPieChart.

virtual void Wt::Chart::WAbstractChart::modelRowsRemoved	(	const WModelIndex &	parent,
		int	start,
		int	end
	)		`[protected, pure virtual]`

Method called when rows have been removed from the model.

See also:: WAbstractItemModel::rowsRemoved

Implemented in Wt::Chart::WCartesianChart, and Wt::Chart::WPieChart.

virtual void Wt::Chart::WAbstractChart::paint	(	WPainter &	painter,
		const WRectF &	rectangle = `WRectF()`
	)		const `[pure virtual]`

Paint the chart in a rectangle of the given painter.

Paints the chart inside the painter, in the area indicated by rectangle. When rectangle is a null rectangle, the entire painter window is used.

Implemented in Wt::Chart::WCartesianChart, and Wt::Chart::WPieChart.

WChartPalette* Wt::Chart::WAbstractChart::palette ( ) const

Returns the palette for the chart.

See also:: setPalette(WChartPalette *palette)

int Wt::Chart::WAbstractChart::plotAreaPadding ( Side side ) const

Returns the internal margin for the main plot area.

This is either the paddings set through setPlotAreaPadding() or computed using setAutoLayoutEnabled()

See also:: setPlotAreaPadding(int, WFlags<Side>)

void Wt::Chart::WAbstractChart::setAutoLayoutEnabled ( bool enabled = true )

Configures the chart layout to be automatic.

This configures the plot area so that the space around it is suited for the text that is rendered (axis labels and text, the title, and legend).

The default value is false, and the chart layout is set manually using values set in setPlotAreaPadding().

void Wt::Chart::WAbstractChart::setBackground ( const WBrush & background )

Sets a background for the chart.

Set the background color for the main plot area.

The default is a completely transparent background.

See also:: background()

void Wt::Chart::WAbstractChart::setModel ( WAbstractItemModel * model )

Set the model.

The model is used by the chart to get its data. Ownership of the model is not transferred, and if a previous model was set it is not deleted.

The default model is a 0 model.

See also:: model()

void Wt::Chart::WAbstractChart::setPalette ( WChartPalette * palette )

Set a palette for the chart.

A palette is used to provide the style information to render the chart series. Ownership of the palette is transferred to the chart.

The default palette is dependent on the chart type.

See also:: palette()

void Wt::Chart::WAbstractChart::setPlotAreaPadding	(	int	padding,
		WFlags< Side >	sides = `All`
	)

Set an internal margin for the main plot area.

This configures the area (in pixels) around the plot area that is available for axes, labels, and titles.

The default is dependent on the chart type.

Alternatively, you can configure the chart layout to be computed automatically using setAutoLayoutEnabled().

See also:: setAutoLayoutEnabled()

void Wt::Chart::WAbstractChart::setTitle ( const WString & title )

Set a chart title.

The title is displayed on top of the chart, using the titleFont().

The default title is an empty title ("").

See also:: title()

void Wt::Chart::WAbstractChart::setTitleFont ( const WFont & titleFont )

Set the font for the chart title.

Changes the font for the chart title.

The default title font is a 15 point Sans Serif font.

See also:: titleFont(), setTitle(const WString&)

const WString& Wt::Chart::WAbstractChart::title ( ) const

Return the chart title.

See also:: title()

const WFont& Wt::Chart::WAbstractChart::titleFont ( ) const

Returns the font for the chart title.

See also:: setTitleFont(const WFont&)

Public Member Functions

Protected Member Functions

Detailed Description

CSS

Member Function Documentation