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Scalable Vector Graphics.
Next Level
Ilya Pukhalski,
April 2014
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@pukhalski
!
Solution Architect, EPAM Systems
Lecturer, British Higher School of Art & Design
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You think you know SVG
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I was pretty sure
as well…
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Boring & Crazy
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Booooooooooring
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xframeworkjs.org
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xframeworkjs.org
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Crazy.
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(a slide with an example
of train animation using
SVG path)
Promote with Pukhalski. Put your ad here.
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SVG Sprites
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.module {
background: url('logo.png');
background: none, url('logo.svg');
}
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SVG Stacks
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Clown Car
Technique
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How do you serve
responsive images?
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!
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!
Picture Element
Picture Element
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The best solution so far?
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Clown Car Technique
• SVG
• Media-queries
• Background images
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SVG Support
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MQ inside SVG
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!
Clown Car Technique
!
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svg {
background-size: 100% 100%;
background-repeat: no-repeat;
}
!
@media screen and (max-width: 400px) {
svg {
background-image: url("images/small.png");
}
}
!
@media screen and (min-width: 401px) and (max-
width: 700px) {
svg {
background-image: url(images/medium.png);
}
}
!
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}
!
@media screen and (min-width: 401px) and (max-
width: 700px) {
svg {
background-image: url(images/medium.png);
}
}
!
@media screen and (min-width: 701px) and (max-
width: 1000px) {
svg {
background-image: url(images/big.png);
}
}
!
@media screen and (min-width: 1001px) {
svg {
background-image: url(images/huge.png);
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preserveAspectRatio="xMidYMid meet">
!
Clown Car Technique
!
svg {
background-size: 100% 100%;
background-repeat: no-repeat;
}
!
@media screen and (max-width: 400px) {
svg {
background-image: url("images/small.png");
}
}
!
@media screen and (min-width: 401px) and (max-
width: 700px) {
svg {
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Embedding SVG
• inline
• img / image
• object
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Embedding inline
• 1 HTTP Request
• Safari and Chrome have
a bug with support of
preserveAspectRatio
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Img
• 2 HTTP Requests
• Cleaner markup
• Most browsers have content
security issues with loading
images
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Object
• 2 HTTP Requests
• No issues with content security
• preserveAspectRatio supported
• Media-queries will react to
parent container changes!
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Old Browsers?
!
!
!
!
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Old Browsers?
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Single HTTP request?
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Accessibility
• Add and to your SVG
• Add ARIA and and other aria
attributes
• Add
• Add attribute to fallback images
• Add text inside object tag
tab-index="0"
role="img"
alt
object
title description
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Drawbacks
• Browser Support
• Tricky
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Benefits
• CSS is incapsulated within SVG
• Simplest solution for responsive images
• Already works!
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Rethinking
Responsive SVG
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Responsive SVG.
The Hobo’s Method
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Responsive Icons (SVG)
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Responsive Icons (SVG)
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Responsive Icons (SVG)
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Responsive Icons (SVG)
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Responsive Icons (SVG)
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.icon {
width: 300px;
height: 300px;
background: url(../images/
home_sprite.svg);
background-position: center top;
}
Responsive Icons (SVG)
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@media only screen and (min-width: 65em)
and (min-height:40em) {
!
.icon {background-position: center
-2400px;}
!
}
Responsive Icons (SVG)
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@media only screen and (min-width: 60em)
and (min-height:37em) {
!
.icon {background-position: center -2100px;}
!
}
@media only screen and (min-width: 55em)
and (min-height:33em) {
!
.icon {background-position: center -1800px;}
!
}
@media only screen and (min-width: 50em)
Responsive Icons (SVG)
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Drawbacks
• External CSS
• 8 different illustrations
• Can we make something more
efficient than this technique
from 90s?
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So…
• SVG can contain styles inside
• SVG supports media-queries
• SVG can react to the parent
container size
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Responsive SVG.
The Poor Man’s Method
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Removing margins
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!
!
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/* Hide all of the icons first. */
.icon {
display: none;
}
!
/* Display the first one. */
#home_icon_0 {
display: block;
}
!
!
!
!
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Hiding all icons except the first one
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}
!
/* Display the desired icon and hide the
others according to the viewport's size. */
@media screen and (min-width: 25em) {
!
#home_icon_0 {
display: none;
}
!
#home_icon_1 {
display: block;
}
}
!
@media screen and (min-width: 30em) {
#home_icon_1 {
display: none;
}
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#home_icon_1 {
display: block;
}
}
!
@media screen and (min-width: 30em) {
#home_icon_1 {
display: none;
}
!
#home_icon_2 {
display: block;
}
}
!
/* And so on */
!
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Responsive SVG.
The Man With A Gun’s Method
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What means
responsive?
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Thinking about “responsive”,
we imagine content choreography first.
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Before After
Redrawing icon manually
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!
!
!
!
icon
Created with Sketch (http://www.bohemiancoding.com/sketch)
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!
#door-body {
fill: white;
}
!
#door-handle {
fill: #E55C3C;
}
!
#door-body, #door-handle {
-ms-transform: translate(0,0);
-webkit-transform:
translate(0,0);
transform: translate(0,0);
}
!
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translate(0,0);
transform: translate(0,0);
}
!
#window {
-ms-transform: translate(0,0)
scale(1);
-webkit-transform:
translate(0,0) scale(1);
transform: translate(0,0)
scale(1);
}
!
#house-body {
-ms-transform: scaleX(1)
translate(0, 0);
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translate(0,0) scale(1);
transform: translate(0,0)
scale(1);
}
!
#house-body {
-ms-transform: scaleX(1)
translate(0, 0);
-webkit-transform: scaleX(1)
translate(0, 0);
transform: scaleX(1)
translate(0, 0);
}
!
#tube-body {
-ms-transform: translate(0,
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Adapting to parent container size
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8 containers
with different
size.
!
One and the
same SVG
file.
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Browser Support
• Internet Explorer 9+
• Firefox 17+
• Chrome 17+
• Opera 15+
• Safari 6.0+
• Safari on iOS 6.0+
• Android browser on Android 3.0+
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Benefits
• CSS is incapsulated within SVG
• Truly responsive approach
• File size
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Drawbacks
• Difficult to create and maintain
• Browser support
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SVG as a module
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What if…
• Add JavaScript logic into SVG file?
• AMD/LMD for SVG?
• SVG-based UI?
• …
• Do you still think I’m OK?
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Search. Explore. Investigate.
Share.
@pukhalski