amcharts.class.inc in Charts and Graphs 6

Implementation of abstract class ChartCanvas for amCharts library.

File

apis/amcharts/amcharts.class.inc

<?php

/**
 * @file
 *   Implementation of abstract class ChartCanvas for amCharts library.
 *
 */

/**
 * Implementation of abstract class ChartCanvas for amCharts library.
 */
class ChartsAmcharts extends ChartCanvas {

  /*
   * Function that preprocesses generalized data structure and saves it in the
   * form suitable for specific charting implementation.
   *
   * @see ChartCanvas::set_data()
   */
  function set_data($rows, $x_labels) {
    $this->series = $rows;
    $this->x_labels = $x_labels;
  }
  function _preprocess_values() {
    if (in_array($this->type, array(
      'pie',
      'donut',
    ))) {
      return $this
        ->_preprocess_values_pie();
    }
    else {
      return $this
        ->_preprocess_values_not_pie();
    }
  }
  function _preprocess_values_pie() {
    $pie_data = array();
    $keys = array_keys($this->series);
    $first_key = $keys[0];
    $first_series = $this->series[$first_key];
    $idx = 0;
    $max_val = max($first_series);
    $max_idx = -1;
    if (is_array($first_series)) {
      foreach ($first_series as $val) {
        $pie_data[$this->x_labels[$idx]] = $val;
        if ($val == $max_val) {
          $max_idx = $idx;
        }
        $idx++;
      }
    }
    $out = '<pie>';
    if (is_array($pie_data)) {
      $idx = 0;
      foreach ($pie_data as $label => $point) {
        $pullout = $idx == $max_idx ? " pull_out='true' " : '';
        $out .= "<slice title='{$label}' {$pullout} >{$point}</slice>";
        $idx++;
      }
    }
    $out .= '</pie>';
    return $out;
  }
  function _preprocess_values_not_pie() {
    $out = "<chart><series>\n";
    if (is_array($this->x_labels)) {
      $i = 1;
      foreach ($this->x_labels as $label) {
        $out .= "<value xid='{$i}'>{$label}</value>\n";
        $i++;
      }
    }
    $out .= "</series><graphs>\n";
    if (is_array($this->series)) {
      foreach ($this->series as $name => $graph) {
        $out .= "<graph title='{$name}' bullet='round'";
        if (strpos($this->type, 'area') !== FALSE) {
          $out .= " fill_alpha='50'";
        }
        $out .= ">\n";
        if (is_array($graph)) {
          $j = 1;
          foreach ($graph as $val) {
            $out .= "<value xid='{$j}'>{$val}</value>\n";
            $j++;
          }
        }
        $out .= "</graph>\n";
      }
    }
    $out .= "</graphs></chart>\n";
    return $out;
  }
  function get_chart() {
    $unique = chart_graphs_random_hash();
    $am_column_type = NULL;
    $am_y_axe_type = NULL;
    switch ($this->type) {
      case 'bar':
        $am_category = 'amcolumn';
        $am_type = 'column';
        break;
      case 'stacked_bar':
        $am_category = 'amcolumn';
        $am_type = 'column';
        $am_column_type = 'stacked';
        break;
      case '100_stacked_bar':
        $am_category = 'amcolumn';
        $am_type = 'column';
        $am_column_type = '100% stacked';
        break;
      case 'bar_3d':
        $am_category = 'amcolumn';
        $am_type = 'column';
        $am_column_type = '3d column';
        break;
      case 'side_bar':
        $am_category = 'amcolumn';
        $am_type = 'bar';
        break;
      case 'stacked_side_bar':
        $am_category = 'amcolumn';
        $am_type = 'bar';
        $am_column_type = 'stacked';
        break;
      case '100_stacked_side_bar':
        $am_category = 'amcolumn';
        $am_type = 'bar';
        $am_column_type = '100% stacked';
        break;
      case 'side_bar_3d':
        $am_category = 'amcolumn';
        $am_type = 'bar';
        $am_column_type = '3d column';
        break;
      case 'line':
        $am_category = 'amline';
        $am_type = 'line';
        break;
      case 'area':
        $am_category = 'amline';
        $am_type = 'line';
        break;
      case 'stacked_area':
        $am_category = 'amline';
        $am_type = 'line';
        $am_y_axe_type = 'stacked';
        break;
      case '100_stacked_area':
        $am_category = 'amline';
        $am_type = 'line';
        $am_y_axe_type = '100% stacked';
        break;
      case 'pie':
        $am_category = 'ampie';
        $am_type = 'pie';
        break;
      case 'donut':
        $am_category = 'ampie';
        $am_type = 'donut';
        break;
    }
    $color = empty($this->colour) ? '#ffffff' : $this->colour;
    $width = $this->width;
    $height = $this->height;
    $data = $this
      ->_preprocess_values();
    if (isset($this->y_legend)) {
      $y_legend = sprintf('<labels>
      <label>
        <x>2%%</x>
        <y>100%%</y>
        <align>center</align>
        <rotate>true</rotate>
        <text>
          %s
        </text>
      </label>
    </labels>', strip_tags($this->y_legend));
    }
    else {
      $y_legend = '';
    }
    if (isset($am_column_type)) {
      $column = sprintf('<column>
          <type>%s</type>
        </column>', $am_column_type);
    }
    else {
      $column = '';
    }
    if (isset($am_y_axe_type)) {
      $y_axe_type = sprintf("<axes>\n          <y_left>\n            <type>%s</type>\n          </y_left>\n        </axes>", $am_y_axe_type);
    }
    else {
      $y_axe_type = '';
    }
    $settings = "<settings>\n    <type>{$am_type}</type>\n    <depth>5</depth>\n    <background><color>{$color}</color>\n    <alpha>80</alpha></background>\n    <js_enabled>false</js_enabled>  \n    <redraw>true</redraw> \n    <data_labels>\n      <show><![CDATA[{title}: {value}%]]></show>\n      <line_color>#FFFFFF</line_color>    \n      <line_alpha>40</line_alpha>\n    </data_labels>\n    {$y_legend}\n    {$column}\n    {$y_axe_type}\n    <pie>\n      <inner_radius>20%</inner_radius>\n      <height>20</height>\n      <angle>30</angle>\n      <hover_brightness>-20</hover_brightness>\n      <gradient>linear</gradient>\n      <gradient_ratio>-10,60</gradient_ratio>\n    </pie>\n  </settings>";
    $settings = str_replace("\n", '', $settings);
    $settings = preg_replace('/>\\s+?</im', '><', $settings);
    $wmode = $this
      ->get_wmode();
    $mod_path = drupal_get_path('module', $this
      ->getModuleName());
    $file = url("{$mod_path}/downloaded/{$am_category}.swf", array(
      'absolute' => TRUE,
    ));

    //-- Prepare URLs that javascript will retrieve data from, using cache:
    $unique = chart_graphs_random_hash();
    $arr = (array) $this;
    $tocache = new stdClass();
    $tocache->settings = $settings;
    $tocache->data = $data;
    cache_set($unique, $tocache, 'cache', time() + 30);

    //Keep for at least 30 seconds;
    $settings_url_query = sprintf('cid=%s', $unique);
    $settings_url = url('amcharts/getdata/settings', array(
      'absolute' => TRUE,
      'query' => $settings_url_query,
    ));
    $data_url_query = sprintf('cid=%s', $unique);
    $data_url = url('amcharts/getdata/data', array(
      'absolute' => TRUE,
      'query' => $data_url_query,
    ));
    $flashvars = array(
      //'chart_settings' => $settings,

      //'chart_data' => $data,
      'settings_file' => 'SWFSETTINGSURL',
      'data_file' => 'SWFDATAURL',
      'preloader_color' => '#999999',
      'wmode' => $wmode,
    );
    $args = array(
      'params' => array(
        'width' => $width,
        'height' => $height,
        'wmode' => $wmode,
      ),
      'flashvars' => $flashvars,
    );
    $out = swf($file, $args);
    $out = str_replace('SWFSETTINGSURL', $settings_url, $out);
    $out = str_replace('SWFDATAURL', $data_url, $out);
    return $out;
  }

}

Classes

Name	Description
ChartsAmcharts	Implementation of abstract class ChartCanvas for amCharts library.