core\chart_base Class Reference

Chart base class. More...

Inheritance diagram for core\chart_base:

Public Member Functions
	__construct ()
	Constructor.
	add_series (chart_series $serie)
	Add a series to the chart.
	get_labels ()
	Get the labels of the X axis.
	get_legend_options ()
	Get an array of options for the chart legend.
	get_series ()
	Get the series.
	get_title ()
	Get the title.
	get_type ()
	Get the chart type.
	get_xaxes ()
	Get the X axes.
	get_xaxis ($index=0, $createifnotexists=false)
	Get an X axis.
	get_yaxes ()
	Get the Y axes.
	get_yaxis ($index=0, $createifnotexists=false)
	Get a Y axis.
	jsonSerialize ()
	Serialize the object.
	set_labels (array $labels)
	Set the chart labels.
	set_legend_options (array $legendoptions)
	Set options for the chart legend.
	set_title ($title)
	Set the title.
	set_xaxis (chart_axis $axis, $index=0)
	Set an X axis.
	set_yaxis (chart_axis $axis, $index=0)
	Set an Y axis.

Protected Member Functions
	set_defaults ()
	Set the defaults for this chart type.
	validate_axis ($xy, chart_axis $axis, $index=0)
	Validate an axis.

Protected Attributes
string[]	$labels = []
	The labels for the X axis when categorised.
array	$legendoptions = []
	Options for the chart legend.
chart_series[]	$series = []
	The series constituting this chart.
string	$title = null
	The title of the chart.
chart_axis[]	$xaxes = []
	The X axes.
chart_axis[]	$yaxes = []
	The Y axes.

Detailed Description

Chart base class.

Copyright

2016 Frédéric Massart - FMCorz.net

License

http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

Constructor & Destructor Documentation

__construct()

core\chart_base::__construct

(

)

Constructor.

Must not take any argument.

Most of the time you do not want to extend this, rather extend the method self::set_defaults to set the defaults on instantiation.

Member Function Documentation

add_series()

core\chart_base::add_series

(

chart_series

$serie

)

Add a series to the chart.

Parameters

chart_series

$serie

The serie.

get_labels()

core\chart_base::get_labels

(

)

Get the labels of the X axis.

Return values

string[]

get_legend_options()

core\chart_base::get_legend_options

(

)

Get an array of options for the chart legend.

Return values

array

get_series()

core\chart_base::get_series

(

)

Get the series.

Return values

chart_series[]

get_title()

core\chart_base::get_title

(

)

Get the title.

Return values

string

get_type()

core\chart_base::get_type

(

)

Get the chart type.

Return values

string

get_xaxes()

core\chart_base::get_xaxes

(

)

Get the X axes.

Return values

chart_axis[]

get_xaxis()

core\chart_base::get_xaxis	(		$index = 0,
			$createifnotexists = false )

Get an X axis.

Parameters

int	$index	The index of the axis.
bool	$createifnotexists	When true, create an instance of the axis if none exist at this index yet.

Return values

chart_axis

get_yaxes()

core\chart_base::get_yaxes

(

)

Get the Y axes.

Return values

chart_axis[]

get_yaxis()

core\chart_base::get_yaxis	(		$index = 0,
			$createifnotexists = false )

Get a Y axis.

Parameters

int	$index	The index of the axis.
bool	$createifnotexists	When true, create an instance of the axis if none exist at this index yet.

Return values

chart_axis

jsonSerialize()

core\chart_base::jsonSerialize

(

)

Serialize the object.

Return values

array

Reimplemented in core\chart_bar, core\chart_line, and core\chart_pie.

set_defaults()

core\chart_base::set_defaults ( )

protected

Set the defaults for this chart type.

Child classes can extend this to set default values on instantiation.

In general the constructor could be used, but this method is here to emphasize and self-document the default values set by the chart type.

Return values

void

Reimplemented in core\chart_bar.

set_labels()

core\chart_base::set_labels

(

array

$labels

)

Set the chart labels.

Parameters

string[]

$labels

The labels.

set_legend_options()

core\chart_base::set_legend_options

(

array

$legendoptions

)

Set options for the chart legend.

See https://www.chartjs.org/docs/2.7.0/configuration/legend.html for options.

Note: Setting onClick and onHover events is not directly supported through this method. These config options must be set directly within Javascript on the page.

Parameters

array

$legendoptions

Whether or not to display the chart's legend.

set_title()

core\chart_base::set_title

(

$title

)

Set the title.

Parameters

string

$title

The title.

set_xaxis()

core\chart_base::set_xaxis	(	chart_axis	$axis,
			$index = 0 )

Set an X axis.

Note that this will override any predefined axis without warning.

Parameters

chart_axis	$axis	The axis.
int	$index	The index of the axis.

set_yaxis()

core\chart_base::set_yaxis	(	chart_axis	$axis,
			$index = 0 )

Set an Y axis.

Note that this will override any predefined axis without warning.

Parameters

chart_axis	$axis	The axis.
int	$index	The index of the axis.

validate_axis()

core\chart_base::validate_axis ( $xy, chart_axis $axis, $index = 0 )

protected

Validate an axis.

We validate this from PHP because not doing it here could result in errors being hard to trace down. For instance, if we were to add axis at keys without another axis preceding, we would effectively contain the axes in an associative array rather than a simple array, and that would have consequences on serialisation.

Parameters

string	$xy	Accepts x or y.
chart_axis	$axis	The axis to validate.
index	$index	The index of the axis.

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

• lib/classes/chart_base.php