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<?php |
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/** |
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* Changes image to new size, by shrinking/enlarging |
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* then cropping to respect new ratio. |
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* |
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* Arguments: |
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* - width of new image |
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* - height of new image |
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* - crop method |
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*/ |
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class TimberImageOperationResize extends TimberImageOperation { |
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private $w, $h, $crop; |
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/** |
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* @param int $w width of new image |
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* @param int $h height of new image |
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* @param string $crop cropping method, one of: 'default', 'center', 'top', 'bottom', 'left', 'right'. |
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*/ |
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function __construct($w, $h, $crop) { |
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$this->w = $w; |
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$this->h = $h; |
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// Sanitize crop position |
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$allowed_crop_positions = array( 'default', 'center', 'top', 'bottom', 'left', 'right' ); |
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if ( $crop !== false && !in_array( $crop, $allowed_crop_positions ) ) { |
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$crop = $allowed_crop_positions[0]; |
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} |
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$this->crop = $crop; |
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} |
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/** |
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* @param string $src_filename the basename of the file (ex: my-awesome-pic) |
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* @param string $src_extension the extension (ex: .jpg) |
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* @return string the final filename to be used (ex: my-awesome-pic-300x200-c-default.jpg) |
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*/ |
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public function filename($src_filename, $src_extension) { |
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$w = 0; |
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$h = 0; |
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if ( $this->w ) { |
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$w = $this->w; |
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} |
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if ( $this->h ) { |
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$h = $this->h; |
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} |
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$result = $src_filename . '-' . $w . 'x' . $h . '-c-' . ( $this->crop ? $this->crop : 'f' ); // Crop will be either user named or f (false) |
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if($src_extension) { |
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$result .= '.'.$src_extension; |
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} |
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return $result; |
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} |
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protected function run_animated_gif( $load_filename, $save_filename ) { |
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$image = wp_get_image_editor( $load_filename ); |
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$current_size = $image->get_size(); |
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$src_w = $current_size['width']; |
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$src_h = $current_size['height']; |
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$w = $this->w; |
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$h = $this->h; |
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if ( !class_exists('Imagick') ) { |
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return false; |
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} |
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$image = new Imagick($load_filename); |
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$image = $image->coalesceImages(); |
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$crop = self::get_target_sizes( $load_filename ); |
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foreach ($image as $frame) { |
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$frame->cropImage($crop['src_w'], $crop['src_h'], $crop['x'], $crop['y']); |
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$frame->thumbnailImage($w, $h); |
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$frame->setImagePage($w, $h, 0, 0); |
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} |
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$image = $image->deconstructImages(); |
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return $image->writeImages($save_filename, true); |
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} |
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protected function get_target_sizes( $load_filename ) { |
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$image = wp_get_image_editor( $load_filename ); |
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$w = $this->w; |
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$h = $this->h; |
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$crop = $this->crop; |
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$current_size = $image->get_size(); |
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$src_w = $current_size['width']; |
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$src_h = $current_size['height']; |
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$src_ratio = $src_w / $src_h; |
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if ( !$h ) { |
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$h = round( $w / $src_ratio ); |
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} |
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if ( !$w ) { |
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//the user wants to resize based on constant height |
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$w = round( $h * $src_ratio ); |
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} |
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View Code Duplication |
if ( !$crop ) { |
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return array( |
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'x' => 0, 'y' => 0, |
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'src_w' => $src_w, 'src_h' => $src_h, |
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'target_w' => $w, 'target_h' => $h |
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); |
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} |
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// Get ratios |
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$dest_ratio = $w / $h; |
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$src_wt = $src_h * $dest_ratio; |
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$src_ht = $src_w / $dest_ratio; |
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$src_x = $src_w / 2 - $src_wt / 2; |
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$src_y = ( $src_h - $src_ht ) / 6; |
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//now specific overrides based on options: |
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if ( $crop == 'center' ) { |
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// Get source x and y |
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$src_x = round( ( $src_w - $src_wt ) / 2 ); |
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$src_y = round( ( $src_h - $src_ht ) / 2 ); |
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} else if ( $crop == 'top' ) { |
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$src_y = 0; |
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} else if ( $crop == 'bottom' ) { |
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$src_y = $src_h - $src_ht; |
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} else if ( $crop == 'left' ) { |
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$src_x = 0; |
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} else if ( $crop == 'right' ) { |
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$src_x = $src_w - $src_wt; |
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} |
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// Crop the image |
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View Code Duplication |
if ( $dest_ratio > $src_ratio ) { |
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return array( |
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'x' => 0, 'y' => $src_y, |
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'src_w' => $src_w, 'src_h' => $src_ht, |
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'target_w' => $w, 'target_h' => $h |
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); |
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} |
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return array( |
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'x' => $src_x, 'y' => 0, |
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'src_w' => $src_wt, 'src_h' => $src_h, |
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'target_w' => $w, 'target_h' => $h |
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); |
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} |
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/** |
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* Performs the actual image manipulation, |
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* including saving the target file. |
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* |
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* @param string $load_filename filepath (not URL) to source file |
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* (ex: /src/var/www/wp-content/uploads/my-pic.jpg) |
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* @param string $save_filename filepath (not URL) where result file should be saved |
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* (ex: /src/var/www/wp-content/uploads/my-pic-300x200-c-default.jpg) |
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* @return bool true if everything went fine, false otherwise |
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*/ |
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public function run($load_filename, $save_filename) { |
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//should be resized by gif resizer |
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if ( TimberImageHelper::is_animated_gif($load_filename) ) { |
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//attempt to resize |
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//return if successful |
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//proceed if not |
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$gif = self::run_animated_gif($load_filename, $save_filename); |
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if ($gif) { |
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return true; |
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} |
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} |
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$image = wp_get_image_editor( $load_filename ); |
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if ( !is_wp_error( $image ) ) { |
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$crop = self::get_target_sizes( $load_filename ); |
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$image->crop( $crop['x'], |
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$crop['y'], |
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$crop['src_w'], |
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$crop['src_h'], |
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$crop['target_w'], |
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$crop['target_h'] |
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); |
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$result = $image->save( $save_filename ); |
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View Code Duplication |
if ( is_wp_error( $result ) ) { |
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// @codeCoverageIgnoreStart |
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TimberHelper::error_log( 'Error resizing image' ); |
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TimberHelper::error_log( $result ); |
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return false; |
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// @codeCoverageIgnoreEnd |
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} else { |
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return true; |
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} |
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View Code Duplication |
} else if ( isset( $image->error_data['error_loading_image'] ) ) { |
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// @codeCoverageIgnoreStart |
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TimberHelper::error_log( 'Error loading ' . $image->error_data['error_loading_image'] ); |
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} else { |
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TimberHelper::error_log( $image ); |
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// @codeCoverageIgnoreEnd |
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} |
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} |
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} |
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jarednova /
timber
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