PieChart Class Reference

The Thistle::PieChart class provides a default implementation for piecharts. More...

Inheritance diagram for PieChart:

Public Member Functions
	PieChart (QWidget *parent=0)
	Constructs a PieChart view with the given parent.
virtual void	defineRects ()
	This pure virtual function defines the QRect used to to draw the different elements composing the view (series, legend, title, etc.).
Public Member Functions inherited from AbstractChart
	AbstractChart (QWidget *parent=0)
	Initializes a chart view with the given parent. More...
	~AbstractChart ()
	Destructs the object and clean the internal components.
virtual QModelIndex	indexAt (const QPoint &point) const
	Returns the model index of the item at the viewport coordinates point.
ChartLegend *	legend () const
	Returns the current ChartLegend used to paint the chart legend.
void	setLegend (ChartLegend *legend)
	Sets the legend used to paint the chart legend. More...
void	setTitle (const QString &title)
	Sets the title displayed at the bottom.
void	setTitleFont (const QFont &font)
	Sets the QFont used to write the title. More...
const QFont &	titleFont () const
	Returns the QFont used to write the title. More...
Public Member Functions inherited from AbstractItemView
	AbstractItemView (QWidget *parent=0)
	Constructs an abstract item view with the given parent.
virtual QRectF	itemRect (const QModelIndex &index) const
	Defines the outer bounds of the item as a rectangle. More...
virtual QRectF	itemRect (int row, int column, const QModelIndex &parent=QModelIndex()) const
	This function overloads itemRect(). More...

Protected Member Functions
virtual QPainterPath	itemPath (const QModelIndex &index) const
	Returns the QPainterPath defining the item's shape.
virtual void	paintChart (QPainter &painter)
	Paints the different parts (legend, axis, values, title, etc.) of the chart. More...
void	scan ()
	Scans values in the model to find the minimum and the maximum. More...
virtual void	updateRects ()
	Updates the regions used to paint each part of the chart (legend, axis, values, title, etc.). More...
Protected Member Functions inherited from AbstractChart
void	calculateLegendRect (const QRect &source)
	Calculates the rectangle in which the legend should be drawn.
virtual void	process ()
	Analyzes the model to define the bounds and axis values. More...

Additional Inherited Members
Public Slots inherited from AbstractChart
void	updateValues ()
	Updates the displayed data in the viewport. More...
Public Slots inherited from AbstractItemView
virtual void	updateValues ()=0
	Updates the items in the item view. More...

Detailed Description

The Thistle::PieChart class provides a default implementation for piecharts.

The Thistle::PieChart class considers that each cell int he first column from the model is a serie of values. It represents a serie with a slice in a disk. The vertical headers defines the name of data.

Member Function Documentation

void paintChart ( QPainter &  painter )

protectedvirtual

Paints the different parts (legend, axis, values, title, etc.) of the chart.

This function is called when the viewport is updated.

Implements AbstractChart.

Reimplemented in PieChart3D.

void scan ( )

protectedvirtual

Scans values in the model to find the minimum and the maximum.

Returns the width needed to display the Y scale. If the values are greater than zero, the minimum is equal to 0. If the values are less than 0, the maximum is equal to 0. If a value is not a number (undefined, a string, etc.), she's considered as equal to 0.

Implements AbstractChart.

virtual void updateRects ( )

protectedvirtual

Updates the regions used to paint each part of the chart (legend, axis, values, title, etc.).

This function is called whenever the view has been resized.

Implements AbstractChart.