[convergese] Adaptive Images in Responsive Web Design

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[convergese] Adaptive Images in Responsive Web Design

  1. 1. CHRISTOPHER SCHMITT @telejectADAPTIVE IMAGESIN RESPONSIVE WEB DESIGN CONVERGESE 2012
  2. 2. WHY DON’T WE ASKTHE BROWSER? (cc) flic.kr/p/vUBHv
  3. 3. Mozilla/1.0 (Win3.1)http://www.useragentstring.com/ (cc) flic.kr/p/vUBHv
  4. 4. Mozilla/1.0 (Win3.1)Mozilla/1.22 (compatible;MSIE 2.0; Windows 95)http://www.useragentstring.com/ (cc) flic.kr/p/vUBHv
  5. 5. Mozilla/5.0 (Macintosh; Intel MacOS X 10_7_3) AppleWebKit/534.55.3 (KHTML, like Gecko)Version/5.1.5 Safari/534.55.3http://www.useragentstring.com/ (cc) flic.kr/p/vUBHv
  6. 6. Mozilla/5.0 (Macintosh; Intel MacOS X 10_7_3) AppleWebKit/534.55.3 (KHTML, like Gecko)Version/5.1.5 Safari/534.55.3http://webaim.org/blog/user-agent-string-history/ (cc) flic.kr/p/vUBHv
  7. 7. “ Based on feedback from users, testers and engineers you will contact large as well as smaller Web sites and advise them on how to improve their code for maximum compatibility and device independence.” http://my.opera.com/chooseopera/blog/2010/06/09/ work-for-opera-as-a-web-opener (cc) flic.kr/p/vUBHv
  8. 8. FEATURE TESTINGvs. BROWSER SNIFFING123
  9. 9. FEATURE TESTINGvs. BROWSER SNIFFING1 Browser width23
  10. 10. A scripting approach var myWidth = 0, myHeight = 0; if( typeof( window.innerWidth ) == number ) { //Non-IE myWidth = window.innerWidth; myHeight = window.innerHeight; } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) { //IE 6+ in standards compliant mode myWidth = document.documentElement.clientWidth; myHeight = document.documentElement.clientHeight; }http://www.howtocreate.co.uk/tutorials/javascript/browserwindow
  11. 11. The jQuery approach // returns width of browser viewport $(window).width(); // returns height of browser viewport $(window).height(); // returns width of HTML document $(document).width(); // returns height of HTML document $(document).height();http://api.jquery.com/width/ & http://api.jquery.com/height/
  12. 12. CSS media queries// default, mobile-1st CSS rules devices go here@media screen and (min-width: 480px) { ... }@media screen and (min-width: 600px) { ... }@media screen and (min-width: 768px) { ... }@media screen and (min-width: 910px) { ... }
  13. 13. (cc) flic.kr/p/8Lo5Gk
  14. 14. BROWSER WIDTHGIVES US FRAME,NOT THE CANVAS
  15. 15. FEATURE TESTINGvs. BROWSER SNIFFING1 Browser width2 Screen resolution3
  16. 16. 72 PPIHAS SERVED US WELL (cc) flic.kr/p/6tjjRP
  17. 17. 72 points-per-inch =72 pixels-per-inch
  18. 18. 96 PPIIF A WINDOWS USER
  19. 19. 72 points-per-inchx [1+(1/3)]= 96 PPI
  20. 20. “RETINA” DISPLAYS 300ppi at 12 inches from the eyes 78μm 78μmgoo.gl/zpkFy
  21. 21. 240 14472 PPI
  22. 22. “ [In 2013, Intel sees their product line] offer a higher resolution experience than a top-of-the-line 1080p HDTV.” http://liliputing.com/2012/04/intel-retina-laptop- desktop-displays-coming-in-2013.html
  23. 23. 72 PPI
  24. 24. 240
  25. 25. RETINA DISPLAYS =LARGER IMAGES,LARGER FILE SIZES
  26. 26. FEATURE TESTINGvs. BROWSER SNIFFING1 Browser width2 Screen resolution3 Bandwidth
  27. 27. SPEED TESTSHINDER SPEED,USER EXPERIENCE (cc) flic.kr/p/4DziUN
  28. 28. “ Testing for speed of an internet connection is like stepping in front of a car to see how fast it is.” (cc) flic.kr/p/4DziUN
  29. 29. “ Testing for speed of an internet connection is like stepping in front of a car to see how fast it is.”“ But, Christopher, you only have to test it once.” (cc) flic.kr/p/4DziUN
  30. 30. Speed test imagehttps://github.com/adamdbradley/foresight.js
  31. 31. Speed test image +50khttps://github.com/adamdbradley/foresight.js
  32. 32. Native speed test // @Modernizrs network-connection.js connection = navigator.connection || { type: 0 }, // polyfill isSlowConnection = connection.type == 3 || connection.type == 4 | /^[23]g$/.test(connection.type);http://davidbcalhoun.com/2010/using-navigator-connection-android
  33. 33. WORKAROUNDS &TRICKS123 (cc) flic.kr/p/64fGf6
  34. 34. WORKAROUNDS &TRICKS1 background-size: auto23 (cc) flic.kr/p/64fGf6
  35. 35. http://fittextjs.com/
  36. 36. background-size: 100%<a href="example.com/link">Download on Github</a>.download a { padding: .095em .8em; background: url(../img/arrow.png) no-repeat; background-size: 100%; margin-left: .4em; -webkit-transition: margin 0.15s ease-out; -moz-transition: margin 0.15s ease-out; text-decoration: none;} 17+ 9+ 11.6+ 5+ 9+
  37. 37. WORKAROUNDS &TRICKS1 background-size: auto2 SVG3 (cc) flic.kr/p/64fGf6
  38. 38. Native SVGhttp://caniuse.com/#search=SVG%20in%20HTML%20img%20element
  39. 39. PNG 16kb SVG 7kb17+ 9+ 11.6+ 5+ 9+
  40. 40. HTML5 Boilerplate<!doctype html><!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7"lang="en"><![endif]--><!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8" lang="en"><![endif]--><!--[if IE 8]> <html class="no-js lt-ie9" lang="en"> <![endif]--><!--[if gt IE 8]><!--> <html class="no-js" lang="en"> <!--<![endif]--><head>
  41. 41. jQuery checkvar checkBrowser = $(html).hasClass(lt-ie9);<div class="svgswap"> <img src="example.svg" data-svgswap="example.png"></div> https://github.com/teleject/svg-swap
  42. 42. http://raphaeljs.com/
  43. 43. WORKAROUNDS &TRICKS1 background-size: auto2 SVG3 font-based solutions (cc) flic.kr/p/64fGf6
  44. 44. “ ...if you use <meta charset="utf-8"> (you should be for HTML5), you’re adding common Unicode characters like and ✆, and you don’t need a specific font’s version... just copy and paste them into your HTML.”
  45. 45. Font-based RWDhttp://ilovetypography.com/2012/04/11/designing-type-systems/
  46. 46. http://css-tricks.com/examples/IconFont/
  47. 47. Font-based icons<style> [data-icon]:before { font-family: icon-font; content: attr(data-icon); }</style><a href="http://example.com/cloud/save/"> <span data-icon="C" aria-hidden="true"></span> Save to Cloud</a>
  48. 48. IMGGIMME THAT OLD SCHOOL123
  49. 49. IMGGIMME THAT OLD SCHOOL1 .htaccess23
  50. 50. Filament .htaccess# Responsive Images# Mobile-First images that scale responsively and responsibly# Copyright 2010, Scott Jehl, Filament Group, Inc# Dual licensed under the MIT or GPL Version 2 licenses.# //Start Responsive ImagesRewriteEngine On# direct image requests to tempRewriteCond %{QUERY_STRING} full=(.*)&?RewriteRule (.*)rwd-router/.*.(jpe?g|png|gif|webp) $1%1 [L]# ignore trap for non-image requests, rewrite URL without trap segmentRewriteRule (.*)rwd-router/(.*)$ $1$2# //End Responsive Images https://github.com/filamentgroup/Responsive-Images
  51. 51. Filament .htaccess<script src="responsiveimgs.js"></script><img src="sample-content/running-sml.jpg?full=sample-content/running-lrg.jpg" /> 4+ 8+
  52. 52. “ ...the server has no way to know what resolution the client’s device is, so it can’t send the appropriately sized embeded images.” http://mattwilcox.net/archive/entry/id/1053/
  53. 53. http://adaptive-images.com/
  54. 54. ADD .HTACCESS, JS,PHP 5, GD lib*, &THEN <IMG>
  55. 55. IMGGIMME THAT OLD SCHOOL1 .htaccess2 <picture>3
  56. 56. media queries in HTML<video controls> <source type="video/mp4" src="video/windowsill_small.mp4"media="all and (max-width: 480px), all and (max-device-width:480px)"> <source type="video/webm" src="video/windowsill_small.webm"media="all and (max-width: 480px), all and (max-device-width:480px)"> <source type="video/mp4" src="video/windowsill.mp4"> <source type="video/webm" src="video/windowsill.webm"> <!-- proper fallback content goes here --></video>http://www.w3.org/community/respimg/2012/03/15/polyfilling- picture-without-the-overhead/
  57. 57. <picture> patch <picture alt="A giant stone face at The Bayon temple in Angkor Thom, Cambodia"> <!-- <source src="small.jpg"> --> <source src="small.jpg"> <!-- <source src="medium.jpg" media="(min-width: 400px)"> --> <source src="medium.jpg" media="(min-width: 400px)"> <!-- <source src="large.jpg" media="(min-width: 800px)"> --> <source src="large.jpg" media="(min-width: 800px)"> <!-- Fallback content for non-JS browsers. Same src as the initial source element. --> <noscript><img src="small.jpg" alt="A giant stone face at The Bayon temple in Angkor Thom, Cambodia"></noscript> </picture>http://www.w3.org/community/respimg/2012/03/15/polyfilling- picture-without-the-overhead/
  58. 58. <picture> patch <picture alt="A giant stone face at The Bayon temple in Angkor Thom, Cambodia"> <!-- <source src="small.jpg"> --> <source src="small.jpg"> <!-- <source src="medium.jpg" media="(min-width: 400px)"> --> <source src="medium.jpg" media="(min-width: 400px)"> <!-- <source src="large.jpg" media="(min-width: 800px)"> --> <source src="large.jpg" media="(min-width: 800px)"> <!-- Fallback content for non-JS browsers. Same src as the initial source element. --> <noscript><img src="small.jpg" alt="A giant stone face at The Bayon temple in Angkor Thom, Cambodia"></noscript> </picture>http://www.w3.org/community/respimg/2012/03/15/polyfilling- picture-without-the-overhead/
  59. 59. ADD IF-ELSE HTML, JS,BORROW <VIDEO>, &THEN <IMG>
  60. 60. IMGGIMME THAT OLD SCHOOL1 .htaccess2 <picture>3 HiSRC
  61. 61. Set, forget it HiSRC<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script><script src="hisrc.js"></script><script> $(document).ready(function(){ $(".hisrc img").hisrc(); });</script>
  62. 62. Set, forget it HiSRC<div class="hisrc"> <img src="halloween-mobile-1st.png" data-1x="halloween-x1.png" data-2x="halloween-x2.jpg" alt="Celebrating Halloween in style" /></div>
  63. 63. Set, forget it HiSRC<div class="hisrc"> <img src="halloween-mobile-1st.png" data-1x="halloween-x1.png" data-2x="halloween-x2.jpg" alt="Celebrating Halloween in style" /></div>
  64. 64. SERIES OF CHECKS TOFIND OUT RESPONSIVEPATH FOR IMAGES...
  65. 65. DO NATIVE SPEED TEST FOR MOBILE DEVICES FIRST...http://davidbcalhoun.com/2010/using-navigator-connection-android
  66. 66. Check pixel density...$.hisrc.devicePixelRatio = 1; if(window.devicePixelRatio !== undefined) { $.hisrc.devicePixelRatio = window.devicePixelRatio }; https://gist.github.com/2428356
  67. 67. Force speed test +50khttps://github.com/adamdbradley/foresight.js
  68. 68. LESS THAN 4G MEANSMOBILE IMAGES LEFTIN PLACE
  69. 69. BETWEEN 4G &300 Kbps MEANSREGULAR DESKTOPIMAGES SWAPPED IN
  70. 70. FAST SPEED & HIGHDENSITY, RETINAIMAGES SWAPPED INhttps://github.com/crdeutsch/hisrc/tree/v2
  71. 71. 2 TRICK PONY
  72. 72. CSS IS CORE.WE USE CSS MEDIAQUERIES FOR DESIGN
  73. 73. http://mediaqueri.es/
  74. 74. CSS media queries// default, mobile-1st CSS rules devices go here@media screen and (min-width: 480px) { ... }@media screen and (min-width: 600px) { ... }@media screen and (min-width: 768px) { ... }@media screen and (min-width: 910px) { ... }
  75. 75. Single pixel GIF
  76. 76. Single pixel GIF
  77. 77. Single pixel GIF
  78. 78. Single pixel GIF
  79. 79. Single pixel GIF $.hisrc.defaults = { useTransparentGif: true,http://www.w3.org/community/respimg/2012/04/06/responsive- content-images-using-a-spacer-png-and-background-image/
  80. 80. Single pixel GIF$.hisrc.defaults = { useTransparentGif: true, transparentGifSrc: data:image/gif;base64,R0lGODlhAQABAIAAAMz/AAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==, 17+ 9+ 11.6+ 5+ 8+
  81. 81. Single pixel GIF$.hisrc.defaults = { useTransparentGif: true, transparentGifSrc: http://example.com/spg.gif, 17+ 9+ 11.6+ 5+ 6+
  82. 82. 2 APPROACHES,1 SIMPLE SOLUTION. https://github.com/teleject/hisrc
  83. 83. 2 APPROACHES,1 SIMPLE SOLUTION.HEART WEB DESIGN https://github.com/teleject/hisrc
  84. 84. IMGGIMME THAT NEW SCHOOL123
  85. 85. IMGGIMME THAT NEW SCHOOL1 simple design for users2 browser, server handshake3 same, several formats
  86. 86. #rwdimg
  87. 87. THANK YOU!CHRISTOPHER SCHMITT @teleject http://goo.gl/gSYmS

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