Public Member Functions

VDKChart (VDKForm *owner, int w=100, int h=100)
virtual ~VDKChart ()
virtual int isA ()
void AddSeries (Series *s)
void Clear ()
GdkGC * GC ()
void SetColor (VDKRgb rgb)
void SetLineAttributes (gint lineWidth, GdkLineStyle lineStyle, GdkCapStyle capStyle, GdkJoinStyle joinStyle)
virtual void Plot (VDKPoint &p, int i, Series *s)

Public Attributes

VDKReadWriteValueProp
< VDKChart, int > ChartBorder
VDKReadWriteValueProp
< VDKChart, VDKString > Title
VDKReadWriteValueProp
< VDKChart, VDKString > LabelX
VDKReadWriteValueProp
< VDKChart, VDKString > LabelY
VDKReadWriteValueProp
< VDKChart, int > LabelXDigits
VDKReadWriteValueProp
< VDKChart, int > LabelYDigits

Detailed Description

Provides a char base class.

VDKChart is a component that allows to plot 2D data in various format, is a base class that implements common functionalities to all subclasses actually supported:

VDKLineChart
VDKScatteredChart
VDKBarChart
Usage
Use of VDKChart is straigthforward, user adds 2D points to a Series, eventually sets some series font and properties. VDKChart will assure data plotting and takes care of rescaling/resizing stuff.

Subclassing VDKChart
Normally user should override only Plot() in order to draw data in desired format.

EXAMPLES
Into ./testvdk/chart.cc

Constructor & Destructor Documentation

VDKChart::VDKChart	(	VDKForm *	owner,
		int	w = `100`,
		int	h = `100`
	)

Constructor

Parameters:

owner
w	width
h	height

VDKChart::~VDKChart ( ) [virtual]

Destructor

Member Function Documentation

void VDKChart::AddSeries ( Series * s )

Adds a series to chart

Parameters:

s	series to be added. Series name is checked for unicity, if a match is found <s> will substitute the old series that will be destroyed. So series to be added should be always constructed in the heap with new operator.

void VDKChart::Clear ( )

Clears chart destroying all series

Reimplemented from VDKCanvas.

GdkGC* VDKChart::GC ( ) [inline]

Returns chart gc

virtual int VDKChart::isA ( ) [inline, virtual]

Returns chart_class

Reimplemented from VDKObject.

Reimplemented in VDKBarChart, VDKScatteredChart, and VDKLineChart.

virtual void VDKChart::Plot	(	VDKPoint &	p,
		int	i,
		Series *	s
	)		`[inline, virtual]`

Plots data,placeholder for subclasses.

Parameters:

p	point to be plotted
i	i-th point of the series
s	series address

Programming tips: Items p contains coordinates ready to be plotted, scaled or resized to chart size and data domain.

Reimplemented in VDKBarChart, VDKScatteredChart, and VDKLineChart.

void VDKChart::SetColor ( VDKRgb rgb )

Sets drawing color, this affects plottin area only, to change axiz, titles and labels color use Foreground property

void VDKChart::SetLineAttributes	(	gint	lineWidth,
		GdkLineStyle	lineStyle,
		GdkCapStyle	capStyle,
		GdkJoinStyle	joinStyle
	)

Sets line attributes

Member Data Documentation

VDKReadWriteValueProp<VDKChart, int> VDKChart::ChartBorder

Sets/gets char border, this area is left to draw axis, title and labels. Defaults to 20 but a larger border is often better.

VDKReadWriteValueProp<VDKChart, VDKString> VDKChart::LabelX

Sets/gets x axis label

VDKReadWriteValueProp<VDKChart, int> VDKChart::LabelXDigits

Sets get how many decimal digits are displayed int x labels

VDKReadWriteValueProp<VDKChart, VDKString> VDKChart::LabelY

Sets/gets y axis label

VDKReadWriteValueProp<VDKChart, int> VDKChart::LabelYDigits

Sets get how many decimal digits are displayed int y labels

VDKReadWriteValueProp<VDKChart, VDKString> VDKChart::Title

Sets/gets chart title

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

chart.h
chart.cc