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proc/thread-self/root/home/dominio1/.trash/eduma/inc/libs/_[ Writable ]

File://proc/thread-self/root/home/dominio1/.trash/eduma/inc/libs/down_image_size.php

<?php
/**
 * Simple but effectively resizes images on the fly. Doesn't upsize, just downsizes like how WordPress likes it.
 * If the image already exists, it's served. If not, the image is resized to the specified size, saved for
 * future use, then served.
 *
 * @author  Benjamin Intal - Gambit Technologies Inc
 * @see     https://wordpress.stackexchange.com/questions/53344/how-to-generate-thumbnails-when-needed-only/124790#124790
 * @see     http://codex.wordpress.org/Function_Reference/get_intermediate_image_sizes
 */
if ( ! function_exists( 'func_otf_regen_thumbs_media_downsize' ) ) {

	/**
	 * The downsizer. This only does something if the existing image size doesn't exist yet.
	 *
	 * @param   $out  boolean false
	 * @param   $id   int Attachment ID
	 * @param   $size mixed The size name, or an array containing the width & height
	 *
	 * @return  mixed False if the custom downsize failed, or an array of the image if successful
	 */
	function func_otf_regen_thumbs_media_downsize( $out, $id, $size ) {
		// Gather all the different image sizes of WP (thumbnail, medium, large) and,
		// all the theme/plugin-introduced sizes.
		global $_gambit_otf_regen_thumbs_all_image_sizes;
		if ( ! isset( $_gambit_otf_regen_thumbs_all_image_sizes ) ) {
			global $_wp_additional_image_sizes;

			$_gambit_otf_regen_thumbs_all_image_sizes = array();
			$interimSizes                             = get_intermediate_image_sizes();
			foreach ( $interimSizes as $sizeName ) {
				if ( in_array( $sizeName, array( 'thumbnail', 'medium', 'large' ) ) ) {
					$_gambit_otf_regen_thumbs_all_image_sizes[$sizeName]['width']  = get_option( $sizeName . '_size_w' );
					$_gambit_otf_regen_thumbs_all_image_sizes[$sizeName]['height'] = get_option( $sizeName . '_size_h' );
					$_gambit_otf_regen_thumbs_all_image_sizes[$sizeName]['crop']   = (bool) get_option( $sizeName . '_crop' );
				} elseif ( isset( $_wp_additional_image_sizes[$sizeName] ) ) {
					$_gambit_otf_regen_thumbs_all_image_sizes[$sizeName] = $_wp_additional_image_sizes[$sizeName];
				}
			}
		}

		// This now contains all the data that we have for all the image sizes
		$allSizes = $_gambit_otf_regen_thumbs_all_image_sizes;

		// If image size exists let WP serve it like normally
		$imagedata = wp_get_attachment_metadata( $id );

		// Image attachment doesn't exist
		if ( ! is_array( $imagedata ) ) {
			return false;
		}

		// If the size given is a string / a name of a size
		if ( is_string( $size ) ) {

			// If WP doesn't know about the image size name, then we can't really do any resizing of our own
			if ( empty( $allSizes[$size] ) ) {
				return false;
			}

			$att_url = wp_get_attachment_url( $id );
			if ( $att_url ) {
				$check_file = wp_check_filetype( $att_url );
				if ( in_array( $check_file['ext'], array( 'jpg', 'png', 'jpeg', 'gif', 'bmp', 'tif' ), true ) ) {

					// If the size has already been previously created, use it
					if ( ! empty( $imagedata['sizes'][$size] ) && ! empty( $allSizes[$size] ) ) {

						// But only if the size remained the same
						if ( $allSizes[$size]['width'] == $imagedata['sizes'][$size]['width']
							&& $allSizes[$size]['height'] == $imagedata['sizes'][$size]['height'] ) {
							return false;
						}

						// Or if the size is different and we found out before that the size really was different
						if ( ! empty( $imagedata['sizes'][$size]['width_query'] )
							&& ! empty( $imagedata['sizes'][$size]['height_query'] ) ) {
							if ( $imagedata['sizes'][$size]['width_query'] == $allSizes[$size]['width']
								&& $imagedata['sizes'][$size]['height_query'] == $allSizes[$size]['height'] ) {
								return false;
							}
						}

					}

					// Resize the image
					$resized = image_make_intermediate_size(
						get_attached_file( $id ),
						$allSizes[$size]['width'],
						$allSizes[$size]['height'],
						$allSizes[$size]['crop']
					);

					// Resize somehow failed
					if ( ! $resized ) {
						return false;
					}

					// Save the new size in WP
					$imagedata['sizes'][$size] = $resized;

					// Save some additional info so that we'll know next time whether we've resized this before
					$imagedata['sizes'][$size]['width_query']  = $allSizes[$size]['width'];
					$imagedata['sizes'][$size]['height_query'] = $allSizes[$size]['height'];

					wp_update_attachment_metadata( $id, $imagedata );

					// Serve the resized image

					return array( dirname( $att_url ) . '/' . $resized['file'], $resized['width'], $resized['height'], true );
				}
			}

			// If the size given is a custom array size
		} else if ( is_array( $size ) ) {
			$att_url = wp_get_attachment_url( $id );
			if ( $att_url ) {
				$check_file = wp_check_filetype( $att_url );
				if ( in_array( $check_file['ext'], array( 'jpg', 'png', 'jpeg', 'gif', 'bmp', 'tif' ), true ) ) {

					$imagePath = get_attached_file( $id );

					$crop       = array_key_exists( 2, $size ) ? $size[2] : true;
					$new_width  = $size[0];
					$new_height = $size[1];
					// If crop is false, calculate new image dimensions
					if ( ! $crop ) {
						if ( class_exists( 'Jetpack' ) && Jetpack::is_module_active( 'photon' ) ) {
							add_filter( 'jetpack_photon_override_image_downsize', '__return_true' );
							$trueData = wp_get_attachment_image_src( $id, 'large' );

						} else {
							$trueData = wp_get_attachment_image_src( $id, 'large' );
						}
						if ( $trueData[1] > $trueData[2] ) {
							// Width > height
							$ratio      = $trueData[1] / $size[0];
							$new_height = round( $trueData[2] / $ratio );
							$new_width  = $size[0];
						} else {
							// Height > width
							$ratio      = $trueData[2] / $size[1];
							$new_height = $size[1];
							$new_width  = round( $trueData[1] / $ratio );
						}
					}
					// This would be the path of our resized image if the dimensions existed
					$imageExt  = pathinfo( $imagePath, PATHINFO_EXTENSION );
					$imagePath = preg_replace( '/^(.*)\.' . $imageExt . '$/', sprintf( '$1-%sx%s.%s', $new_width, $new_height, $imageExt ), $imagePath );


					// If it already exists, serve it
					if ( file_exists( $imagePath ) ) {
						return array( dirname( $att_url ) . '/' . basename( $imagePath ), $new_width, $new_height, $crop );
					}
					// If not, resize the image...
					$resized = image_make_intermediate_size(
						get_attached_file( $id ),
						$size[0],
						$size[1],
						$crop
					);

					$imagedata = wp_get_attachment_metadata( $id );
					// Resize somehow failed
					if ( $imagedata['width'] < $new_width && $imagedata['height'] < $new_height ) {
						return array( $att_url, $imagedata['width'], $imagedata['height'], false );
					}
					// Resize somehow failed
					if ( ! $resized ) {
						return false;
					}
					// Get attachment meta so we can add new size
					// Save the new size in WP so that it can also perform actions on it
					$imagedata['sizes'][$size[0] . 'x' . $size[1]] = $resized;
					wp_update_attachment_metadata( $id, $imagedata );

					// Then serve it
					return array( dirname( $att_url ) . '/' . $resized['file'], $resized['width'], $resized['height'], $crop );
				}
			}
		}

		return false;
	}

	add_filter( 'image_downsize', 'func_otf_regen_thumbs_media_downsize', 10, 3 );
}

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