imagecache_actions.inc

<?php
// $Id$

/**
 * Imagecache Scale 
 */
function imagecache_scale_form($data) {
  $form = imagecache_resize_form($data);
  $form['upscale'] = array(
    '#type' => 'checkbox',
    '#default_value' => (isset($data['upscale'])) ? $data['upscale'] : 0,
    '#title' => t('Allow Upscaling'),
    '#description' => t('Let scale make images larger than their original size'),
  );
  return $form;
}

function theme_imagecache_scale($element) {
  $output = theme_imagecache_resize($element) .  ', upscale: '. 
  $output .= ($element['#value']['upscale']) ? t('Yes') : t('No');
  return $output;
}

function imagecache_scale_image(&$image, $data) {
  // Set impossibly large values if the width and height aren't set.
  $data['width'] = $data['width'] ? $data['width'] : 9999999;
  $data['height'] = $data['height'] ? $data['height'] : 9999999;
  if (!imageapi_image_scale($image, $data['width'], $data['height'], $data['upscale'])) {
    watchdog('imagecache', t('imagecache_scale_image failed. image: %image, data: %data.', array('%path' => $image, '%data' => print_r($data, true))), WATCHDOG_ERROR);
    return false;
  }
  return true;
}


/**
 * Imagecache Scale and Crop
 */
function imagecache_scale_and_crop_form($data) {
  return imagecache_resize_form($data);
}

function theme_imagecache_scale_and_crop($element) {
  return theme_imagecache_resize($element);
}


function imagecache_scale_and_crop_image(&$image, $data) {
  if (!imageapi_image_scale_and_crop($image, $data['width'], $data['height'])) {
    watchdog('imagecache', t('imagecache_scale_and_crop failed. image: %image, data: %data.', array('%path' => $image, '%data' => print_r($data, true))), WATCHDOG_ERROR);
    return false;
  }
  return true;
}



/**
 * Imagecache Deprecated Scale.
 * This will be removed in imagecache 2.1
 */
function imagecache_deprecated_scale_form($data) {
  $helptext = array();
  $helptext['inside'] = t('<strong>Inside dimensions</strong>: Final dimensions will be less than or equal to the entered width and height. Useful for ensuring a maximum height and/or width.');
  $helptext['outside'] = t('<strong>Outside dimensions</strong>: Final dimensions will be greater than or equal to the entered width and height. Ideal for cropping the result to a square.');
  $description = '<ul><li>'. implode('</li><li>', $helptext) .'</li><ul>';

  $form['fit'] = array(
    '#type' => 'select',
    '#title' => t('Scale to fit'),
    '#options' => array('inside' => t('Inside dimensions'), 'outside' => t('Outside dimensions')),
    '#default_value' => $data['fit'],
    '#weight' => 1,
    '#description' => $description,
  );
  $form['width'] = array(
    '#type' => 'textfield',
    '#title' => t('Width'),
    '#default_value' => $data['width'],
    '#description' => t('Enter a width in pixels or as a percentage. i.e. 500 or 80%.'),
  );
  $form['height'] = array(
    '#type' => 'textfield',
    '#title' => t('Height'),
    '#default_value' => $data['height'],
    '#description' => t('Enter a height in pixels or as a percentage. i.e. 500 or 80%.'),
  );
  return $form;
}

function theme_imagecache_deprecated_scale($element) {
  $data = $element['#value'];
  $options = array('inside' => t('Inside dimensions'), 'outside' => t('Outside dimensions'));
  return 'width: '. $data['width'] .', height: '. $data['height'] .', fit: '. $options[$data['fit']];
}

function imagecache_deprecated_scale_image(&$image, $data) {
  if ($data['fit'] == 'outside' && $data['width'] && $data['height']) {
    $ratio = $image->info['width'] / $image->info['height'];
    $new_ratio = $data['width']/$data['height'];
    $data['width'] = $ratio > $new_ratio ? 0 : $data['width'];
    $data['height'] = $ratio < $new_ratio ? 0 : $data['height'];
  }
  // Set impossibly large values if the width and height aren't set.
  $data['width'] = $data['width'] ? $data['width'] : 9999999;
  $data['height'] = $data['height'] ? $data['height'] : 9999999;
  if (!imageapi_image_scale($image, $data['width'], $data['height'])) {
     watchdog('imagecache', t('imagecache_deprecated_scale failed. image: %image, data: %data.', array('%path' => $image, '%data' => print_r($data, true))), WATCHDOG_ERROR);
    return false;
  }
  return true;
}



/**
 * Imagecache Crop 
 */
function imagecache_crop_form($data) {
  $form['width'] = array(
    '#type' => 'textfield',
    '#title' => t('Width'),
    '#default_value' => $data['width'],
    '#description' => t('Enter a width in pixels or as a percentage. i.e. 500 or 80%.'),
  );
  $form['height'] = array(
    '#type' => 'textfield',
    '#title' => t('Height'),
    '#default_value' => $data['height'],
    '#description' => t('Enter a height in pixels or as a percentage. i.e. 500 or 80%.'),
  );
  $form['xoffset'] = array(
    '#type' => 'textfield',
    '#title' => t('X offset'),
    '#default_value' => $data['xoffset'],
    '#description' => t('Enter an offset in pixels or use a keyword: <em>left</em>, <em>center</em>, or <em>right</em>.'),
  );
  $form['yoffset'] = array(
    '#type' => 'textfield',
    '#title' => t('Y offset'),
    '#default_value' => $data['yoffset'],
    '#description' => t('Enter an offset in pixels or use a keyword: <em>top</em>, <em>center</em>, or <em>bottom</em>.'),
  );
  return $form;
}

function theme_imagecache_crop($element) {
  $data = $element['#value'];
  return 'width: '. $data['width'] .', height: '. $data['height'] .', xoffset: '. $data['xoffset'] .', yoffset: '. $data['yoffset'];
}

function imagecache_crop_image(&$image, $data) {
  if (!imageapi_image_crop($image, $data['xoffset'], $data['yoffset'], $data['width'], $data['height'])) {
      watchdog('imagecache', t('imagecache_crop failed. image: %image, data: %data.', array('%path' => $image, '%data' => print_r($data, true))), WATCHDOG_ERROR);
    return false;
  }
  return true;
}


/**
 * Imagecache Desaturate
 */
function imagecache_desaturate_form($data) {
  return array();
}

function theme_imagecache_desaturate($element) {
  return '';
}


function imagecache_desaturate_image(&$image, $data = array()) {
  if (!imageapi_image_desaturate($image)) {
    watchdog('imagecache', t('imagecache_desaturate failed. image: %image, data: %data.', array('%path' => $image, '%data' => print_r($data, true))), WATCHDOG_ERROR);
    return false;
  }
  return true;
}



/**
 * Imagecache Rotate 
 */
function imagecache_rotate_form($data) {
  $form['degrees'] = array(
    '#type' => 'textfield',
    '#default_value' => (isset($data['degrees'])) ? $data['degrees'] : 0,
    '#title' => t('Rotation angle'),
    '#description' => t('The number of degrees the image should be rotated. Positive numbers are clockwise, negative are counter-clockwise.'),
  );
  $form['random'] = array(
    '#type' => 'checkbox',
    '#default_value' => (isset($data['random'])) ? $data['random'] : 0,
    '#title' => t('Randomize'),
    '#description' => t('Randomize the rotation angle for each image. The angle specified above is used as a maximum.'),
  );
  $form['bgcolor'] = array(
    '#type' => 'textfield',
    '#default_value' => (isset($data['bgcolor'])) ? $data['bgcolor'] : '#FFFFFF',
    '#title' => t('Background color'),
    '#description' => t('The background color to use for exposed areas of the image. Use web-style hex colors (#FFFFFF for white, #000000 for black).'),
  );
  return $form;
}

function theme_imagecache_rotate($element) {
  $output = t('degrees: ') . $element['#value']['degrees'] .', ';
  $output .= t('randomize: ') . (($element['#value']['random']) ? t('Yes') : t('No')) .', ';
  $output .= t('background: ') . $element['#value']['bgcolor'];
  return $output;
}

function imagecache_rotate_image(&$image, $data) {
  // Set sane default values.
  $data['degrees'] = $data['degrees'] ? $data['degrees'] : 0;
  $data['random'] = $data['random'] ? $data['random'] : false;
  $data['bgcolor'] = $data['bgcolor'] ? $data['bgcolor'] : '#FFFFFF';

  // Manipulate the if we need to randomize, and convert to proper colors.
  $data['bgcolor'] = '0x'. str_replace('#', '', $data['bgcolor']);

  if (!empty($data['random'])) {
    $degrees = abs((float)$data['degrees']);
    $data['degrees'] = rand(-1 * $degrees, $degrees);
  }

  if (!imageapi_image_rotate($image, $data['degrees'], $data['bgcolor'])) {
    watchdog('imagecache', t('imagecache_rotate_image failed. image: %image, data: %data.', array('%path' => $image, '%data' => print_r($data, true))), WATCHDOG_ERROR);
    return false;
  }
  return true;
}