Bulletproof Font Icons - Speaker Deck

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N Bulletproof C E U R N

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LET’S LEARN EVERYTHING ABOUT @FONT-FACE

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@zachleat zachleat.com

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If you wish to make a font icon from scratch, you must first invent the universe. —Carl Sagan, probably https://www.ﬂickr.com/photos/scott-s_photos/11763686274 “ ”

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@Font-face THIS ONE WEIRD TRICK A G EN D A CAT FANCY UNICODE LOADING.. . .. .

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1997 @font-‐face

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1995

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@font-‐face

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CSS3 CSS2.1 CSS2

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@font-‐face { ! font-‐family: The Font that Could; src:url('icanfont.ttf') format('truetype'), url('icanfont.woff') format('woff'); font-‐weight: normal; font-‐style: normal; ! }

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@font-‐face { ! font-‐family: The Font that Could; src:url('icanfont.ttf') format('truetype'), url('icanfont.woff') format('woff'); font-‐weight: normal; font-‐style: normal; ! }

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@font-‐face { ! font-‐family: The Font that Could; src:url('icanfont.ttf') format('truetype'), url('icanfont.woff') format('woff'); font-‐weight: normal; font-‐style: normal; ! }

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David Hasselwoff USE WOFF

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Woff caniuse.com 5.0! 6.0 7.0! 7.5!

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WOFF BY ONE ERROR

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Woff + TTF caniuse.com 5.0! 6.0 7.0! 7.5!

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NEED IE8? Add EOT

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@font-‐face { ! font-‐family: The Font that Could; src:url('icanfont.eot?#iefix') format('embedded-‐opentype'), url('icanfont.ttf') format('truetype'), url('icanfont.woff') format('woff'); font-‐weight: normal; font-‐style: normal; ! }

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Woff + TTF + EOT caniuse.com 5.0! 6.0 7.0! 7.5!

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NEED Chrome + Windows? Add SVG http://www.fontspring.com/blog/smoother-web-font-rendering-chrome

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34 8.1 WOFF SVG ISSU E XP

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Woff + EOT + TTF + SVG https://code.google.com/p/chromium/issues/detail?id=137692 caniuse.com 5.0 7.0! 7.5! 6.0 6.0

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@media (-‐webkit-‐min-‐device-‐pixel-‐ratio:0) { ! @font-‐face { font-‐family: The Font That Could; src: url('icanfont.svg#icomoon') format('svg'); font-‐weight: normal; font-‐style: normal; } ! }

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https://github.com/scottjehl/Device-Bugs/issues/43 ISSU E

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@media (-‐webkit-‐min-‐device-‐pixel-‐ratio:0) and (min-‐resolution: .001dpcm) { ! @font-‐face { font-‐family: The Font That Could; src: url('icanfont.svg#icomoon') format('svg'); font-‐weight: normal; font-‐style: normal; } ! }

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Supports -‐webkit-‐min-‐device-‐pixel-‐ratio Supports min-‐resolution Yes No Yes No

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Woff + EOT + TTF + SVG https://code.google.com/p/chromium/issues/detail?id=137692 caniuse.com 5.0 7.0! 7.5! 6.0 6.0

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WHEW.

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A QUICK REVIEW

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@font-‐face { font-‐family: The Font that Could; src:url('icanfont.eot?#iefix') format('embedded-‐opentype'), url('icanfont.ttf') format('truetype'), url('icanfont.woff') format('woff'); font-‐weight: normal; font-‐style: normal; } ! @media (-‐webkit-‐min-‐device-‐pixel-‐ratio:0) and (min-‐resolution: .001dpcm) { ! @font-‐face { font-‐family: The Font That Could; src: url('icanfont.svg#icomoon') format('svg'); font-‐weight: normal; font-‐style: normal; } }

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GO TO YOUR HAPPY PLACE

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LET’s PUT THE @FONT-FACE BLOCK ON OUR WEB PAGE

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NO FONT-FAMILY NO DOWNLOAD

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34 28 9, 10, 11 20 6.1, 7 2.3, 4.1 7 8

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body { font-‐family: My Icon Font, serif; }

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var b = document.body; ! b.style.fontFamily = "My Icon Font";

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@Font-face THIS ONE WEIRD TRICK A G EN D A CAT FANCY UNICODE LOADING…

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BASIC LATIN CODE POINT Arial Chunk Five x41 A A x42 B B x43 C C x44 D D x45 E E

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Higher UNICODE Ranges x2261 ≡ x2605 ˒ x2665 ♥ x2713 ✓

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Arial Chunk Five 0x1F300 0x1F302 0x1F350 Arial Chunk Five 0x1F300 0x1F302 0x1F350 EMOJI http://doeschromesupportemojiyet.com/ https://code.google.com/p/chromium/issues/detail?id=62435

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CONSISTENCY

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unicode.johnholtripley.co.uk

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READ AS x2261 ≡ IDENTICAL TO x2605 ˒ BLACK STAR or STAR x2665 ♥ HEART SUIT ACCESSIBILITY

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PRIVATE USE AREA

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YOUR ICON FONT HERE 0xe001 0xe002 0xe003 0xe004 PRIVATE USE AREA

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@Font-face THIS ONE WEIRD TRICK A G EN D A CAT FANCY UNICODE LOADING…

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https://www.flickr.com/photos/79157069@N03/11616536203/ OUR @FONT-FACE REQUEST LEAVES THE NEST

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LOCAL FONT { @FONT-FACE {

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FOIT Flash of Invisible Text

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@FONT-FACE LOAD

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https://twitter.com/aanand/status/465182499577286656

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LOCAL FONT { @FONT-FACE {

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FOUT Flash of UNSTYLED Text

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3 S @FONT-FACE LOAD ABCDEFGH ABCDEFGH

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3 S @FONT-FACE LOAD

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https://twitter.com/raganwald/status/452092613529567233 Screenshot of GitHub

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LOCAL FONT { @FONT-FACE {

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Timeouts/CURFEWS 34 > 60 s 36 28 9, 10, 11 N/A 20 > 60 s 3 s 3 s 7 60 s 4.1 > 60 s * 6 > 60 s 60 s* 7

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if font loads after 60 seconds SAFARI IGNORES IT 7 *Timeout ISSU E 7

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WHAT HAPPENS WHEN A USER HITS THE STOP BUTTON?

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LOCAL FONT { @FONT-FACE { ISSU E

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@Font-face THIS ONE WEIRD TRICK A G EN D A CAT FANCY UNICODE LOADING…

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LET’S FIX EVERYTHING

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DECORATIVE ICON U SE C A SE

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Share on Twitter

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Share on Twitter

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FILAMENTGROUP/A-Font-Garde https://github.com/filamentgroup/a-font-garde

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FontFaceOnload( "My Icon Font", { glyphs: "\uE600\uE601\uE602\uE605", success: function() { var docEl = document.documentElement; docEl.className += " my-‐icon-‐font"; } }); // requires http://filamentgroup.github.io/a-font-garde/src/fontfaceonload.js

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/* @font-‐face omitted */ ! .my-‐icon-‐font .icon-‐twitter:before { font-‐family: My Icon Font; content: "\e600"; }

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typekit/webfontloader https://github.com/typekit/webfontloader

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CSS Font Loading Module Level 3 http://dev.w3.org/csswg/css-font-loading/

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document.fonts.load("1em My Icon Font") .then(function() { ! var docEl = document.documentElement; docEl.className += " my-‐icon-‐font"; ! });

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BRAMSTEIN/FONTLOADER https://github.com/bramstein/fontloader FOLLOW HE’S WORKING ON A POLYFILL. https://twitter.com/bram_stein/status/465560158723395584

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my-‐icon-‐font SOLVES OUR PROBLEMS

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WE NOW CONTROL FOIT & FOUT

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NO MORE UNICODE SURPRISES TIMEOUT SURPRISES STOP BUTTON SURPRISES

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DECORATIVE ICON 3 S @FONT-FACE LOAD FOIT FOUT

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@Font-face THIS ONE WEIRD TRICK A G EN D A LET’S GET FANCY UNICODE LOADING…

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LET’S GET CAT FANCY

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TEXT to ICON @FONT-FACE LOAD U SE C A SE

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.facebook .icon { display: none; } .my-‐icon-‐font .facebook .icon { display: inline-‐block; } .my-‐icon-‐font .facebook .text { /* Visually hide but keep for screen readers */ clip: rect(0 0 0 0); overflow: hidden; position: absolute; height: 1px; width: 1px; } Facebook https://github.com/h5bp/html5-boilerplate/blob/master/css/main.css#L127

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GLYPH to ICON ≡ U SE C A SE

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https://twitter.com/bjankord/status/451367657493647361 Hamburger Helper

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Hamburger Emoji

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= Veggieburger

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– Gluten Free Hamburger https://twitter.com/brouxhaha/status/464787128334180354

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Facebook’s Manburger https://twitter.com/jedschmidt/status/455871778267463680

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Hungryman Burger

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@FONT-FACE LOAD GLYPH to ICON ≡

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.hamburger .icon:before { content: "\2261"; /* Adjust font-‐size and line-‐height to match */ } .hamburger .text { /* Visually hide but keep for screen readers */ clip: rect(0 0 0 0); overflow: hidden; position: absolute; height: 1px; width: 1px; } .my-‐icon-‐font .hamburger .icon:before { font-‐family: My Icon Font; content: "\e601"; ! /* Reset font-‐size and line-‐height */ font-‐size: inherit; line-‐height: inherit; } Menu