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chriscoyierchriscoyier
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making work with media uploader output
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‎js/picturefill-dev.js

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/*! Picturefill - Responsive Images that work today. (and mimic the proposed Picture element with span elements). Author: Scott Jehl, Filament Group, 2012 | License: MIT/GPLv2 */
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(function( w ){
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// Enable strict mode
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"use strict";
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w.picturefill = function() {
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var ps = w.document.getElementsByTagName( "span" );
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// Loop the pictures
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for( var i = 0, il = ps.length; i < il; i++ ){
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if( ps[ i ].getAttribute( "data-picture" ) !== null ){
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var sources = ps[ i ].getElementsByTagName( "span" ),
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matches = [];
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// See if which sources match
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for( var j = 0, jl = sources.length; j < jl; j++ ){
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var media = sources[ j ].getAttribute( "data-media" );
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// if there's no media specified, OR w.matchMedia is supported
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if( !media || ( w.matchMedia && w.matchMedia( media ).matches ) ){
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matches.push( sources[ j ] );
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}
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}
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// Find any existing img element in the picture element
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var picImg = ps[ i ].getElementsByTagName( "img" )[ 0 ];
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if( matches.length ){
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var matchedEl = matches.pop();
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if( !picImg || picImg.parentNode.nodeName === "NOSCRIPT" ){
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picImg = w.document.createElement( "img" );
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picImg.alt = ps[ i ].getAttribute( "data-alt" );
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}
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else if( matchedEl === picImg.parentNode ){
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// Skip further actions if the correct image is already in place
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continue;
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}
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picImg.src = matchedEl.getAttribute( "data-src" );
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matchedEl.appendChild( picImg );
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picImg.removeAttribute("width");
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picImg.removeAttribute("height");
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}
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else if( picImg ){
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picImg.parentNode.removeChild( picImg );
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}
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}
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}
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};
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// Run on resize and domready (w.load as a fallback)
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if( w.addEventListener ){
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w.addEventListener( "resize", w.picturefill, false );
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w.addEventListener( "DOMContentLoaded", function(){
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w.picturefill();
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// Run once only
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w.removeEventListener( "load", w.picturefill, false );
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}, false );
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w.addEventListener( "load", w.picturefill, false );
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}
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else if( w.attachEvent ){
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w.attachEvent( "onload", w.picturefill );
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}
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}( this ));

‎readme.txt

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This plugin tells WordPress to create three additional sizes for images you upload. Then it outputs special HTML (via a shortcode) that works with the Picturefill library to achieve responsive images in content.
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Make Sure current theme has 'add_theme_support( 'post-thumbnails' );'
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### Usage
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[responsive imageid="12" size1="0" size2="500" size3="1000"]
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This plugin adds 3 custom image sizes to your wordpress thumbnail function, and then uses the image id to generate a pictureTime responsive image tag using those three sizes.
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### Prereqs
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It works best with advanced custom fields. If you'd like to add more sizes, you can do so in the php file of this plugin.
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Make sure your current theme has
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Put following code wherever you'd like the image to be in your template files
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<span data-picture>
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<?php
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$image ='the id of your image';
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$mappings = array(
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0 => 'small-img', // zero maps to default
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500 => 'medium-img',
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800 => 'large-img'
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);
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echo getPictureSrcs($image, $mappings),
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'<noscript>',wp_get_attachment_image( $image, 800 ),' </noscript>';
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?>
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</span>
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To use as a shortcode, pass in the image id and breakpoint sizes. ex:
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[responsive imageid="12" size1="0" size2="500" size3="1000"]
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'add_theme_support( 'post-thumbnails' );'
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in the `functions.php` file.
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### Tutorial
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Here: http://css-tricks.com/hassle-free-responsive-images-for-wordpress

‎wp-tevko-responsive-images.php

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<?php
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/*
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Plugin Name: WP Tevko Responsive Images
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Plugin URI: http://timevko.com
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Description: Fully responsive image solution using picturefill and the ID of your image.
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Version: 0.2.0
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Author: Tim Evko
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Author URI: http://timevko.com
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License: Creative Commons
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*/
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//first we get picturefill
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function get_picturefill() {
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wp_enqueue_script( 'picturefill', plugins_url( '/js/picturefill.js', __FILE__ ));
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}
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add_action('init','get_picturefill');
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//add support for our desired image sizes - if you add to these, you may have to adjust your shortcode function
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add_image_size( 'large-img', 1000, 702);
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add_image_size( 'medium-img', 700, 372);
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add_image_size( 'small-img', 300, 200);
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function getPictureSrcs($image, $mappings)
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{
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$arr = array();
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foreach ($mappings as $size => $type)
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{
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$imageSrc = wp_get_attachment_image_src($image, $type);
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$arr[] ='<span data-src="'. $imageSrc[0] . ' "data-media="(min-width:'. $size .'px)"></span>';
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}
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return implode($arr);
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}
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// Yes you can use it as a short code
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function responsiveShortcode( $atts ) {
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extract( shortcode_atts( array(
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'imageid' => 1,
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// you can add more sizes for your shortcodes here
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'size1' => 0,
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'size2' => 600,
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'size3' => 1000,
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), $atts ) );
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$mappings = array(
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$size1 => 'small-img',
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$size2 => 'medium-img',
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$size3 => 'large-img'
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);
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return '<span data-picture>'
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. getPictureSrcs($imageid, $mappings) .
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'<noscript>' . wp_get_attachment_image( $imageid, $size2 ) . ' </noscript>
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</span>';
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}
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add_shortcode( 'responsive', 'responsiveShortcode' );
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/*
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Plugin Name: WP Tevko Responsive Images
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Plugin URI: http://timevko.com
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Description: Fully responsive image solution using picturefill and the ID of your image.
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Version: 0.2.0
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Author: Tim Evko
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Author URI: http://timevko.com
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License: Creative Commons
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*/
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// First we queue the polyfill
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function get_picturefill() {
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wp_enqueue_script('picturefill', plugins_url('/js/picturefill.js', __FILE__ ));
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}
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add_action('init', 'get_picturefill');
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// Add support for our desired image sizes - if you add to these, you may have to adjust your shortcode function
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// TODO: Add UI for adjusting?
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add_image_size('large-img', 1000, 702);
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add_image_size('medium-img', 700, 372);
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add_image_size('small-img', 300, 200);
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function getPictureSrcs($image, $mappings) {
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$arr = array();
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foreach ($mappings as $size => $type) {
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$imageSrc = wp_get_attachment_image_src($image, $type);
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$arr[] ='<span data-src="'. $imageSrc[0] . ' "data-media="(min-width:'. $size .'px)"></span>';
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}
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return implode($arr);
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}
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function responsiveShortcode($atts) {
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extract( shortcode_atts( array(
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'imageid' => 1,
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// You can add more sizes for your shortcodes here
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'size1' => 0,
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'size2' => 600,
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'size3' => 1000,
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), $atts ) );
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$mappings = array(
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$size1 => 'small-img',
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$size2 => 'medium-img',
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$size3 => 'large-img'
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);
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return
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'<span data-picture>'
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. getPictureSrcs($imageid, $mappings) .
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'<noscript>' . wp_get_attachment_image($imageid, $size2) . ' </noscript>
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</span>';
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}
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// TODO: It this the best name? responsive_img? picture?
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add_shortcode('responsive', 'responsiveShortcode');
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// Alter Media Uploader output to output shortcode instead
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// TODO: Make optional?
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// TODO: Make this know what sizes are chosen, rather than hardcoded
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function responsive_insert_image($html, $id, $caption, $title, $align, $url) {
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return "[responsive imageid='$id' size1='0' size2='600' size3='1000']";
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}
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add_filter('image_send_to_editor', 'responsive_insert_image', 10, 9);
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?>

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