Add field suffixes to textfields with units in pixels.

modules/d3_sankey_table_group_pp/d3_sankey_table_group_pp.module

@@ -65,6 +65,7 @@ function d3_sankey_table_group_pp_field_formatter_settings_form($field, $instanc
     $element['width'] = array(
       '#type' => 'textfield',
       '#title' => t('Chart width'),
+      '#field_suffix' => t('px', array(), array('context' => 'unit of measurement (pixels)')),
       '#element_validate' => array('element_validate_integer_positive'),
       '#default_value' => $settings['width'],
     );
@@ -73,6 +74,7 @@ function d3_sankey_table_group_pp_field_formatter_settings_form($field, $instanc
     $element['height'] = array(
       '#type' => 'textfield',
       '#title' => t('Chart height'),
+      '#field_suffix' => t('px', array(), array('context' => 'unit of measurement (pixels)')),
       '#element_validate' => array('element_validate_integer_positive'),
       '#default_value' => $settings['height'],
     );
@@ -81,6 +83,7 @@ function d3_sankey_table_group_pp_field_formatter_settings_form($field, $instanc
     $element['nodeWidth'] = array(
       '#type' => 'textfield',
       '#title' => t('Node width'),
+      '#field_suffix' => t('px', array(), array('context' => 'unit of measurement (pixels)')),
       '#element_validate' => array('element_validate_integer_positive'),
       '#default_value' => $settings['nodeWidth'],
     );
@@ -89,6 +92,7 @@ function d3_sankey_table_group_pp_field_formatter_settings_form($field, $instanc
     $element['nodePadding'] = array(
       '#type' => 'textfield',
       '#title' => t('Node padding'),
+      '#field_suffix' => t('px', array(), array('context' => 'unit of measurement (pixels)')),
       '#element_validate' => array('element_validate_integer_positive'),
       '#default_value' => $settings['nodePadding'],
     );