TRUE, '#theme' => 'chartjs_chart', '#theme_wrappers' => array('form_element'), '#pre_render' => array('_chartjs_chart_pre_render'), ); return $types; } /** * Define chartjs theme callbacks. */ function _chartjs_theme($existing, $type, $theme, $path) { return array( 'chartjs_chart' => array( 'render element' => 'element', 'file' => 'chartjs_elements.inc', ), ); } /** * Implement chart pre render callback. */ function _chartjs_chart_pre_render($element) { libraries_load('chartjs'); $name = isset($element['#name']) ? $element['#name'] : "chart"; $chart_type = isset($element['#chart_type']) ? $element['#chart_type'] : "bar"; $element['#attached']['js'] = array( drupal_get_path('module', 'chartjs').'/js/chart_elements.js', array( 'data' => array( 'chart_'.$name => array( 'labels' => $element['#labels'], 'datasets' => $element['#datasets'], ), 'chart_'.$name.'_options' => $element['#options'], 'chart_'.$name.'_type' => $chart_type, ), 'type' => 'setting', ) ); return $element; } /** * Implements chart theme callback. */ function theme_chartjs_chart($variables) { $name = isset($variables['element']['#name']) ? $variables['element']['#name'] : 'chart'; $output = '

'; $output .= sprintf('

', $name); return $output; }