<?php
// $id: $

/**
 * @file
 * Imagick toolkit functions
 */

/**
 * Implementation of hook_imageapi_toolkit().
 *
 * this hook only gets called to see is a module implements the imageapi hooks...
 */
function imageapi_imagick_imageapi_toolkit() {
}


/**
 * Settings form for the toolkit.
 */
function imageapi_imagick_settings_form() {
  $form['imageapi_imagick_quality'] = array(
    '#type' => 'textfield',
    '#title' => t('Compression Quality'),
    '#description' => t('Ranges from 1 to 100. Higher values mean better image quality, but bigger files.'),
    '#size' => 10,
    '#maxlength' => 3,
    '#default_value' => variable_get('imageapi_imagick_quality', 75),
    '#field_suffix' => '%',
    '#validate' => array('imageapi_imagick_quality_element_validate' => array()),
  );
  return system_settings_form($form);
}

function imageapi_imagick_quality_element_validate($element) {
  if ($element['#value'] < 0 || $element['#value'] > 100) {
    form_set_error($element['#name'], t('Compression Quality must be a value between 1 and 100.'));
  }
}

function imageapi_imagick_image_open($image) {
  try {
    $image->res = new Imagick($image->source);
    $image->res->setCompressionQuality(variable_get('imageapi_imagick_quality', 75));
  }
  catch(Exception $e) {
    return FALSE;
  }
  return $image;
}

function imageapi_imagick_image_close($image, $destination) {
  try {
   return $image->res->writeImage($destination);
  }
  catch(Exception $e) {
    //print_r($e);
    return FALSE;
  }
}

function imageapi_imagick_image_crop(&$image, $x, $y, $width, $height) {
  try {
    $image->res->cropImage($width, $height, $x, $y);
    $image->info['width'] = $width;
    $image->info['height'] = $height;
  }
  catch (Exception $e)  {
    return FALSE;
  }
  return TRUE;
}

function imageapi_imagick_image_resize(&$image, $width, $height) {
  try {
    $image->res->resizeImage($width, $height, Imagick::FILTER_LANCZOS, 1);
    $image->info['width'] = $width;
    $image->info['height'] = $width;
  }
  catch (Exception $e)  {
    return FALSE;
  }
  return TRUE;
}

function imageapi_imagick_image_rotate(&$image, $degrees, $bgcolor) {
  $image->res->imageRotate(new ImagickPixel($bgcolor), $degree);
  return TRUE;
} 

function imageapi_imagick_image_desaturate(&$image) {
  $image->res->setImageType(Imagick::IMGTYPE_GRAYSCALE);
  return TRUE;
}