diff options
author | Torsten Grote <grote@kolabsys.com> | 2014-01-29 15:00:00 (GMT) |
---|---|---|
committer | Torsten Grote <grote@kolabsys.com> | 2014-01-29 15:00:00 (GMT) |
commit | d9e4a0f1b5f45b2e3fed0908a69dad264d40b15b (patch) | |
tree | 76d774e7d2ce4ba7c0754c590a6b730b6f6ceed9 /kolab.org/www/drupal-7.26/modules/image/image.effects.inc | |
parent | 5145fb6b6b03f545d7b82db89850dac1b3b49d78 (diff) | |
download | kolab.org-www-d9e4a0f1b5f45b2e3fed0908a69dad264d40b15b.tar.gz |
add new drupal version
Diffstat (limited to 'kolab.org/www/drupal-7.26/modules/image/image.effects.inc')
-rw-r--r-- | kolab.org/www/drupal-7.26/modules/image/image.effects.inc | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/kolab.org/www/drupal-7.26/modules/image/image.effects.inc b/kolab.org/www/drupal-7.26/modules/image/image.effects.inc new file mode 100644 index 0000000..35a6a74 --- /dev/null +++ b/kolab.org/www/drupal-7.26/modules/image/image.effects.inc @@ -0,0 +1,314 @@ +<?php + +/** + * @file + * Functions needed to execute image effects provided by Image module. + */ + +/** + * Implements hook_image_effect_info(). + */ +function image_image_effect_info() { + $effects = array( + 'image_resize' => array( + 'label' => t('Resize'), + 'help' => t('Resizing will make images an exact set of dimensions. This may cause images to be stretched or shrunk disproportionately.'), + 'effect callback' => 'image_resize_effect', + 'dimensions callback' => 'image_resize_dimensions', + 'form callback' => 'image_resize_form', + 'summary theme' => 'image_resize_summary', + ), + 'image_scale' => array( + 'label' => t('Scale'), + 'help' => t('Scaling will maintain the aspect-ratio of the original image. If only a single dimension is specified, the other dimension will be calculated.'), + 'effect callback' => 'image_scale_effect', + 'dimensions callback' => 'image_scale_dimensions', + 'form callback' => 'image_scale_form', + 'summary theme' => 'image_scale_summary', + ), + 'image_scale_and_crop' => array( + 'label' => t('Scale and crop'), + 'help' => t('Scale and crop will maintain the aspect-ratio of the original image, then crop the larger dimension. This is most useful for creating perfectly square thumbnails without stretching the image.'), + 'effect callback' => 'image_scale_and_crop_effect', + 'dimensions callback' => 'image_resize_dimensions', + 'form callback' => 'image_resize_form', + 'summary theme' => 'image_resize_summary', + ), + 'image_crop' => array( + 'label' => t('Crop'), + 'help' => t('Cropping will remove portions of an image to make it the specified dimensions.'), + 'effect callback' => 'image_crop_effect', + 'dimensions callback' => 'image_resize_dimensions', + 'form callback' => 'image_crop_form', + 'summary theme' => 'image_crop_summary', + ), + 'image_desaturate' => array( + 'label' => t('Desaturate'), + 'help' => t('Desaturate converts an image to grayscale.'), + 'effect callback' => 'image_desaturate_effect', + 'dimensions passthrough' => TRUE, + ), + 'image_rotate' => array( + 'label' => t('Rotate'), + 'help' => t('Rotating an image may cause the dimensions of an image to increase to fit the diagonal.'), + 'effect callback' => 'image_rotate_effect', + 'dimensions callback' => 'image_rotate_dimensions', + 'form callback' => 'image_rotate_form', + 'summary theme' => 'image_rotate_summary', + ), + ); + + return $effects; +} + +/** + * Image effect callback; Resize an image resource. + * + * @param $image + * An image object returned by image_load(). + * @param $data + * An array of attributes to use when performing the resize effect with the + * following items: + * - "width": An integer representing the desired width in pixels. + * - "height": An integer representing the desired height in pixels. + * + * @return + * TRUE on success. FALSE on failure to resize image. + * + * @see image_resize() + */ +function image_resize_effect(&$image, $data) { + if (!image_resize($image, $data['width'], $data['height'])) { + watchdog('image', 'Image resize failed using the %toolkit toolkit on %path (%mimetype, %dimensions)', array('%toolkit' => $image->toolkit, '%path' => $image->source, '%mimetype' => $image->info['mime_type'], '%dimensions' => $image->info['width'] . 'x' . $image->info['height']), WATCHDOG_ERROR); + return FALSE; + } + return TRUE; +} + +/** + * Image dimensions callback; Resize. + * + * @param $dimensions + * Dimensions to be modified - an array with components width and height, in + * pixels. + * @param $data + * An array of attributes to use when performing the resize effect with the + * following items: + * - "width": An integer representing the desired width in pixels. + * - "height": An integer representing the desired height in pixels. + */ +function image_resize_dimensions(array &$dimensions, array $data) { + // The new image will have the exact dimensions defined for the effect. + $dimensions['width'] = $data['width']; + $dimensions['height'] = $data['height']; +} + +/** + * Image effect callback; Scale an image resource. + * + * @param $image + * An image object returned by image_load(). + * @param $data + * An array of attributes to use when performing the scale effect with the + * following items: + * - "width": An integer representing the desired width in pixels. + * - "height": An integer representing the desired height in pixels. + * - "upscale": A boolean indicating that the image should be upscaled if the + * dimensions are larger than the original image. + * + * @return + * TRUE on success. FALSE on failure to scale image. + * + * @see image_scale() + */ +function image_scale_effect(&$image, $data) { + // Set sane default values. + $data += array( + 'width' => NULL, + 'height' => NULL, + 'upscale' => FALSE, + ); + + if (!image_scale($image, $data['width'], $data['height'], $data['upscale'])) { + watchdog('image', 'Image scale failed using the %toolkit toolkit on %path (%mimetype, %dimensions)', array('%toolkit' => $image->toolkit, '%path' => $image->source, '%mimetype' => $image->info['mime_type'], '%dimensions' => $image->info['width'] . 'x' . $image->info['height']), WATCHDOG_ERROR); + return FALSE; + } + return TRUE; +} + +/** + * Image dimensions callback; Scale. + * + * @param $dimensions + * Dimensions to be modified - an array with components width and height, in + * pixels. + * @param $data + * An array of attributes to use when performing the scale effect with the + * following items: + * - "width": An integer representing the desired width in pixels. + * - "height": An integer representing the desired height in pixels. + * - "upscale": A boolean indicating that the image should be upscaled if the + * dimensions are larger than the original image. + */ +function image_scale_dimensions(array &$dimensions, array $data) { + if ($dimensions['width'] && $dimensions['height']) { + image_dimensions_scale($dimensions, $data['width'], $data['height'], $data['upscale']); + } +} + +/** + * Image effect callback; Crop an image resource. + * + * @param $image + * An image object returned by image_load(). + * @param $data + * An array of attributes to use when performing the crop effect with the + * following items: + * - "width": An integer representing the desired width in pixels. + * - "height": An integer representing the desired height in pixels. + * - "anchor": A string describing where the crop should originate in the form + * of "XOFFSET-YOFFSET". XOFFSET is either a number of pixels or + * "left", "center", "right" and YOFFSET is either a number of pixels or + * "top", "center", "bottom". + * @return + * TRUE on success. FALSE on failure to crop image. + * @see image_crop() + */ +function image_crop_effect(&$image, $data) { + // Set sane default values. + $data += array( + 'anchor' => 'center-center', + ); + + list($x, $y) = explode('-', $data['anchor']); + $x = image_filter_keyword($x, $image->info['width'], $data['width']); + $y = image_filter_keyword($y, $image->info['height'], $data['height']); + if (!image_crop($image, $x, $y, $data['width'], $data['height'])) { + watchdog('image', 'Image crop failed using the %toolkit toolkit on %path (%mimetype, %dimensions)', array('%toolkit' => $image->toolkit, '%path' => $image->source, '%mimetype' => $image->info['mime_type'], '%dimensions' => $image->info['width'] . 'x' . $image->info['height']), WATCHDOG_ERROR); + return FALSE; + } + return TRUE; +} + +/** + * Image effect callback; Scale and crop an image resource. + * + * @param $image + * An image object returned by image_load(). + * @param $data + * An array of attributes to use when performing the scale and crop effect + * with the following items: + * - "width": An integer representing the desired width in pixels. + * - "height": An integer representing the desired height in pixels. + * @return + * TRUE on success. FALSE on failure to scale and crop image. + * @see image_scale_and_crop() + */ +function image_scale_and_crop_effect(&$image, $data) { + if (!image_scale_and_crop($image, $data['width'], $data['height'])) { + watchdog('image', 'Image scale and crop failed using the %toolkit toolkit on %path (%mimetype, %dimensions)', array('%toolkit' => $image->toolkit, '%path' => $image->source, '%mimetype' => $image->info['mime_type'], '%dimensions' => $image->info['width'] . 'x' . $image->info['height']), WATCHDOG_ERROR); + return FALSE; + } + return TRUE; +} + +/** + * Image effect callback; Desaturate (grayscale) an image resource. + * + * @param $image + * An image object returned by image_load(). + * @param $data + * An array of attributes to use when performing the desaturate effect. + * @return + * TRUE on success. FALSE on failure to desaturate image. + * @see image_desaturate() + */ +function image_desaturate_effect(&$image, $data) { + if (!image_desaturate($image)) { + watchdog('image', 'Image desaturate failed using the %toolkit toolkit on %path (%mimetype, %dimensions)', array('%toolkit' => $image->toolkit, '%path' => $image->source, '%mimetype' => $image->info['mime_type'], '%dimensions' => $image->info['width'] . 'x' . $image->info['height']), WATCHDOG_ERROR); + return FALSE; + } + return TRUE; +} + +/** + * Image effect callback; Rotate an image resource. + * + * @param $image + * An image object returned by image_load(). + * @param $data + * An array of attributes to use when performing the rotate effect containing + * the following items: + * - "degrees": The number of (clockwise) degrees to rotate the image. + * - "random": A boolean indicating that a random rotation angle should be + * used for this image. The angle specified in "degrees" is used as a + * positive and negative maximum. + * - "bgcolor": The background color to use for exposed areas of the image. + * Use web-style hex colors (#FFFFFF for white, #000000 for black). Leave + * blank for transparency on image types that support it. + * @return + * TRUE on success. FALSE on failure to rotate image. + * @see image_rotate(). + */ +function image_rotate_effect(&$image, $data) { + // Set sane default values. + $data += array( + 'degrees' => 0, + 'bgcolor' => NULL, + 'random' => FALSE, + ); + + // Convert short #FFF syntax to full #FFFFFF syntax. + if (strlen($data['bgcolor']) == 4) { + $c = $data['bgcolor']; + $data['bgcolor'] = $c[0] . $c[1] . $c[1] . $c[2] . $c[2] . $c[3] . $c[3]; + } + + // Convert #FFFFFF syntax to hexadecimal colors. + if ($data['bgcolor'] != '') { + $data['bgcolor'] = hexdec(str_replace('#', '0x', $data['bgcolor'])); + } + else { + $data['bgcolor'] = NULL; + } + + if (!empty($data['random'])) { + $degrees = abs((float) $data['degrees']); + $data['degrees'] = rand(-1 * $degrees, $degrees); + } + + if (!image_rotate($image, $data['degrees'], $data['bgcolor'])) { + watchdog('image', 'Image rotate failed using the %toolkit toolkit on %path (%mimetype, %dimensions)', array('%toolkit' => $image->toolkit, '%path' => $image->source, '%mimetype' => $image->info['mime_type'], '%dimensions' => $image->info['width'] . 'x' . $image->info['height']), WATCHDOG_ERROR); + return FALSE; + } + return TRUE; +} + +/** + * Image dimensions callback; Rotate. + * + * @param $dimensions + * Dimensions to be modified - an array with components width and height, in + * pixels. + * @param $data + * An array of attributes to use when performing the rotate effect containing + * the following items: + * - "degrees": The number of (clockwise) degrees to rotate the image. + * - "random": A boolean indicating that a random rotation angle should be + * used for this image. The angle specified in "degrees" is used as a + * positive and negative maximum. + */ +function image_rotate_dimensions(array &$dimensions, array $data) { + // If the rotate is not random and the angle is a multiple of 90 degrees, + // then the new dimensions can be determined. + if (!$data['random'] && ((int) ($data['degrees']) == $data['degrees']) && ($data['degrees'] % 90 == 0)) { + if ($data['degrees'] % 180 != 0) { + $temp = $dimensions['width']; + $dimensions['width'] = $dimensions['height']; + $dimensions['height'] = $temp; + } + } + else { + $dimensions['width'] = $dimensions['height'] = NULL; + } +} |