image_hover_effects.module in Image Hover Effects 7

Main file of Image Class module.

File

image_hover_effects.module

<?php

/**
 * @file
 * Main file of Image Class module.
 */

/**
 * Implements hook_field_formatter_info_alter().
 */
function image_hover_effects_field_formatter_info_alter(&$info) {
  $info['image']['settings']['image_hover_effects'] = '';
  $info['image']['settings']['image_hover_effects_data'] = '+';
}

/**
 * Implements hook_field_formatter_settings_form_alter().
 */
function image_hover_effects_field_formatter_settings_form_alter(&$settings_form, $context) {
  $display = $context['instance']['display'][$context['view_mode']];
  $settings = $display['settings'];
  if ($context['instance']['display'][$context['view_mode']]['type'] == 'image') {
    $settings_form['image_hover_effects'] = array(
      '#title' => t('Image Hover Effect'),
      '#type' => 'select',
      '#default_value' => $settings['image_hover_effects'] !== null ? $settings['image_hover_effects'] : 0,
      '#options' => array(
        0 => t('None'),
        'zoom' => t('Zoom'),
        'default' => t('Overlay'),
        'fade_in' => t('Overlay fade in'),
        'zoom_in' => t('Overlay zoom in'),
        'fade_in_down' => t('Overlay fade in down'),
        'fade_in_up' => t('Overlay fade in up'),
        'fade_in_left' => t('Overlay fade in left'),
        'fade_in_right' => t('Overlay fade in right'),
      ),
    );
    $settings_form['image_hover_effects_data'] = array(
      '#type' => 'textfield',
      '#title' => t('Hover Effect Content'),
      '#default_value' => $settings['image_hover_effects_data'],
      '#size' => 12,
      '#maxlength' => 128,
      '#states' => array(
        'visible' => array(
          ':input[name="options[settings][image_hover_effects]"]' => array(
            '!value' => '0',
          ),
        ),
      ),
      '#description' => t('You may use tokens to display entity data. Example: [node:title]'),
    );
  }
}

/**
 * Implements hook_field_formatter_settings_summary_alter().
 */
function image_hover_effects_field_formatter_settings_summary_alter(&$summary, $context) {
  $display = $context['instance']['display'][$context['view_mode']];
  $settings = $display['settings'];
  if ($context['instance']['display'][$context['view_mode']]['type'] == 'image') {
    if (isset($settings['image_hover_effects']) && $settings['image_hover_effects']) {
      $summary .= '<br />' . t('Class: @class', array(
        '@class' => $settings['image_hover_effects'],
      ));
    }
  }
}

/**
 * Implements hook_field_attach_view_alter().
 */
function image_hover_effects_field_attach_view_alter(&$output, $context) {
  foreach (element_children($output) as $field_name) {
    $element =& $output[$field_name];
    $view_modes = field_view_mode_settings($element['#entity_type'], $element['#bundle']);

    // Check whether set view mode has custom settings.
    if (isset($view_modes[$context['view_mode']]) && !$view_modes[$context['view_mode']]['custom_settings']) {
      $context['view_mode'] = 'default';
    }
    $instance = field_info_instance($element['#entity_type'], $field_name, $element['#bundle']);

    // Check whether view mode exists in the field instance.
    if (isset($instance['display'][$context['view_mode']])) {
      $display = $instance['display'][$context['view_mode']];
    }
    elseif ($context['view_mode'] == '_custom' && is_array($context['display'])) {
      $display = $context['display'];
    }
    else {
      $display = $instance['display']['default'];
    }
    $settings = $display['settings'];
    $effect = isset($settings['image_hover_effects']) ? 'ihe-overlay--' . $settings['image_hover_effects'] : FALSE;
    $entity_info = entity_get_info($context['entity_type']);
    $token_type = isset($entity_info['token type']) ? $entity_info['token type'] : $context['entity_type'];
    if (isset($settings['image_hover_effects']) && $settings['image_hover_effects']) {
      $hover_content = token_replace($settings['image_hover_effects_data'], array(
        $token_type => $context['entity'],
      ), array(
        'sanitize' => FALSE,
      ));
      $effect_class = drupal_html_class('ihe-overlay--' . $settings['image_hover_effects']);
      $classes = array(
        'ihe-overlay',
        $effect_class,
      );
      drupal_add_css(drupal_get_path('module', 'image_hover_effects') . '/css/image-hover-effects.css', array(
        'group' => CSS_DEFAULT,
        'every_page' => FALSE,
      ));
    }
    else {

      // Move on to the next child if 'class' setting is not available.
      continue;
    }

    // Add 'class' setting to the attributes of all children elements.
    foreach (element_children($element) as $delta) {

      // Can only add classes to wrapping link not to image because image does
      // not support the :after pseudo selector we use for overlays
      $element[$delta]['#path']['options']['attributes'] = array(
        'class' => $classes,
        'data-hover' => $hover_content,
      );
    }
  }
}

Functions

Name	Description
image_hover_effects_field_attach_view_alter	Implements hook_field_attach_view_alter().
image_hover_effects_field_formatter_info_alter	Implements hook_field_formatter_info_alter().
image_hover_effects_field_formatter_settings_form_alter	Implements hook_field_formatter_settings_form_alter().
image_hover_effects_field_formatter_settings_summary_alter	Implements hook_field_formatter_settings_summary_alter().