PHP_SMART_HOME_V3/app/class/ChartJS.php

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2019-08-23 11:39:42 +00:00
<?php
abstract class ChartJS
{
/**
* @var array chart data
*/
protected $_datasets = array();
/**
* @var array chart labels
*/
protected $_labels = array();
/**
* The chart type
* @var string
*/
protected $_type = '';
/**
* @var array Specific options for chart
*/
protected $_options = array();
/**
* @var string Chartjs canvas' ID
*/
protected $_id;
/**
* @var string Canvas width
*/
protected $_width;
/**
* @var string Canvas height
*/
protected $_height;
/**
* @var array Canvas attributes (class,
*/
protected $_attributes = array();
/**
* @var array Default colors
*/
protected static $_defaultColors = array('fill' => 'rgba(220,220,220,0.2)', 'stroke' => 'rgba(220,220,220,1)', 'point' => 'rgba(220,220,220,1)', 'pointStroke' => '#fff');
/**
* Add label(s)
* @param array $labels
* @param bool $reset
*/
public function addLabels(array $labels, $reset = false)
{
if ($reset) {
$this->_labels = array();
}
$this->_labels = $this->_labels + $labels;
}
/**
* Add dataset
* @param $dataset
* @param $reset
*/
public function addDataset($dataset, $reset)
{
if ($reset) {
$this->_datasets = array();
}
$this->_datasets += $dataset;
}
public function __construct($id = null, $width = '', $height = '', $otherAttributes = array())
{
if (!$id) {
$id = uniqid('chartjs_', true);
}
$this->_id = $id;
$this->_width = $width;
$this->_height = $height;
// Always save otherAttributes as array
if ($otherAttributes && !is_array($otherAttributes)) {
$otherAttributes = array($otherAttributes);
}
$this->_attributes = $otherAttributes;
}
/**
* This method allows to echo ChartJS object and directly renders canvas (instead of using ChartJS->render())
*/
public function __toString()
{
return $this->renderCanvas();
}
public function renderCanvas()
{
$data = $this->_renderData();
$options = $this->_renderOptions();
$height = $this->_renderHeight();
$width = $this->_renderWidth();
$attributes = $this->_renderAttributes();
$canvas = '<canvas id="' . $this->_id . '" data-chartjs="' . $this->_type . '"' . $height . $width . $attributes . $data . $options . '></canvas>';
return $canvas;
}
/**
* Prepare canvas' attributes
* @return string
*/
protected function _renderAttributes()
{
$attributes = '';
foreach ($this->_attributes as $attribute => $value) {
$attributes .= ' ' . $attribute . '="' . $value . '"';
}
return $attributes;
}
/**
* Prepare width attribute for canvas
* @return string
*/
protected function _renderWidth()
{
$width = '';
if ($this->_width) {
$width = ' width="' . $this->_width . '"';
}
return $width;
}
/**
* Prepare height attribute for canvas
* @return string
*/
protected function _renderHeight()
{
$height = '';
if ($this->_height) {
$height = ' height="' . $this->_height . '"';
}
return $height;
}
/**
* Render custom options for the chart
* @return string
*/
protected function _renderOptions()
{
if (empty($this->_options)) {
return '';
}
return ' data-options=\'' . json_encode($this->_options) . '\'';
}
/**
* Prepare data (labels and dataset) for the chart
* @return string
*/
protected function _renderData()
{
$array_data = array('labels' => array(), 'datasets' => array());
$i = 0;
foreach ($this->_datasets as $line) {
$this->_completeColors($line['options'], $i);
$array_data['datasets'][] = $line['options'] + array('data' => $line['data']);
$i++;
}
$array_data['labels'] = $this->_labels;
return ' data-data=\'' . json_encode($array_data) . '\'';
}
/**
* Set default colors
* @param array $defaultColors
*/
public static function setDefaultColors(array $defaultColors)
{
self::$_defaultColors = $defaultColors;
}
/**
* @param array $color
*/
public static function addDefaultColor(array $color)
{
if (!empty($color['fill']) && !empty($color['stroke']) && !empty($color['point']) && !empty($color['pointStroke'])) {
self::$_defaultColors[] = $color;
} else {
trigger_error('Color is missing to add this theme (need fill, stroke, point and pointStroke) : color not added', E_USER_WARNING);
}
}
protected function _completeColors(&$options, &$i)
{
if (empty(static::$_defaultColors[$i])) {
$i = 0;
}
$colors = static::$_defaultColors[$i];
foreach (static::$_colorsRequired as $name) {
if (empty($options[$name])) {
$shortName = str_replace('Color', '', $name);
if (empty($colors[$shortName])) {
$shortName = static::$_colorsReplacement[$shortName];
}
$options[$name] = $colors[$shortName];
}
}
}
}