Slide 1
Slide 1 text
The specs behind the sex
MOBILE-FRIENDLY LAYOUTS BEYOND THE DESKTOP
Slide 2
Slide 2 text
Zeldman pic by Tony Quartarolo
Slide 3
Slide 3 text
No content
Slide 4
Slide 4 text
Mobile Web philosophy
Slide 5
Slide 5 text
No content
Slide 6
Slide 6 text
No content
Slide 7
Slide 7 text
No content
Slide 8
Slide 8 text
No content
Slide 9
Slide 9 text
No content
Slide 10
Slide 10 text
No content
Slide 11
Slide 11 text
No content
Slide 12
Slide 12 text
No content
Slide 13
Slide 13 text
Three methodologies
Slide 14
Slide 14 text
1. Special mobile site
2. Do nothing at all
3. Optimise for mobile
Slide 15
Slide 15 text
1. Special mobile site
2. Do nothing at all
3. Optimise for mobile
Slide 16
Slide 16 text
refactored for small screen,
not dumbed down for mobile
Slide 17
Slide 17 text
offer users choice:
desktop or mobile?
Slide 18
Slide 18 text
beware browser sniffing
photo: http://www.flickr.com/photos/timdorr/2096272747/
Slide 19
Slide 19 text
1. Special mobile site
2. Do nothing at all
3. Optimise for mobile
Slide 20
Slide 20 text
not WAP or text anymore...
Slide 21
Slide 21 text
1. Special mobile site
2. Do nothing at all
3. Optimise for mobile
Slide 22
Slide 22 text
No content
Slide 23
Slide 23 text
CSS 2 Media Types
Slide 24
Slide 24 text
Media types
all braille
embossed handheld
print projection
screen speech
tty tv
Slide 25
Slide 25 text
CSS 3 Media Queries
“...the new hotness” Jeffrey Zeldman
http://www.zeldman.com/2010/04/08/best-aea-yet/
Slide 26
Slide 26 text
CSS 3 Media Queries
●
builds on CSS 2.1 Media Types concept
●
more granular control (not just screen, print...)
http://www.w3.org/TR/css3-mediaqueries/
Slide 27
Slide 27 text
Media features
width color
height color-index
device-width monochrome
device-height resolution
orientation scan
aspect-ratio grid
device-aspect-ratio
Slide 28
Slide 28 text
CSS 3 Media Queries
@import url("...") screen and (max-width:480px);
@media screen and (max-width:480px) {
// insert CSS rules here
}
Slide 29
Slide 29 text
Multiple expressions – and keyword
@media screen and (min-width:180px) and (max-
width:480px) {
// screen device and width > 180px
// and width < 480px
}
Slide 30
Slide 30 text
Multiple expressions – comma separated
@media screen and (min-width:800px),
print and (min-width:20em) {
// screen device with width > 800px
// or print device with width > 20em
}
Slide 31
Slide 31 text
Negative expressions – not keyword
@media not screen and (min-width:800px) {
// not applied to screen device
// with width > 800px
}
Slide 32
Slide 32 text
Exclusive expressions – only keyword
@media only screen and (min-width:800px) {
// only applied to screen device
// with width > 800px
}
Slide 33
Slide 33 text
Multiple media queries
/* “The absence of a media query is the first
media query” Bryan Rieger */
@media screen and (max-width:480px) {
// screen device and width < 480px
}
@media screen and (max-width:980px) {
// screen device and width < 980px
}
@media screen and (min-width:980px) {
// screen device and width > 980px
}
Slide 34
Slide 34 text
http://mediaqueri.es
Slide 35
Slide 35 text
http://mediaqueri.es
Slide 36
Slide 36 text
http://mediaqueri.es
Slide 37
Slide 37 text
http://mediaqueri.es
Slide 38
Slide 38 text
www.themaninblue.com/writing/perspective/2004/09/21
Slide 39
Slide 39 text
unsolved mysteries…
Slide 40
Slide 40 text
mobile devices lie
Slide 41
Slide 41 text
viewport meta
suggests an initial layout viewport
and zoom
Slide 42
Slide 42 text
physical vs virtual pixels
Slide 43
Slide 43 text
No content
Slide 44
Slide 44 text
No content
Slide 45
Slide 45 text
viewport meta
http://developer.apple.com/safari/library/documentation/AppleApplications/Reference/SafariWebContent/UsingtheViewport/UsingtheViewport.html
Slide 46
Slide 46 text
No content
Slide 47
Slide 47 text
No content
Slide 48
Slide 48 text
Slide 49
Slide 49 text
If you're using Media Queries:
If you have an explicit width:
Slide 50
Slide 50 text
Viewport properties
width initial-scale
height minimum-scale
user-scalable maximum-scale
Slide 51
Slide 51 text
high-dpi devices lie twice
Slide 52
Slide 52 text
Slide 53
Slide 53 text
CSS Device Adaptation
@viewport {
width: 320px;
zoom: 2.3;
user-zoom: fixed;
}
www.w3.org/TR/css-device-adapt
only works in Opera Mobile 11+ at the moment, with -o- prefix
dev.opera.com/articles/view/an-introduction-to-meta-viewport-and-viewport
Slide 54
Slide 54 text
Viewport properties
width / min-width / max-width user-zoom
height / min-height / max-height orientation
zoom / min-zoom / max-zoom resolution
Slide 55
Slide 55 text
@-o-viewport {
width: 550px;
}
Slide 56
Slide 56 text
@-o-viewport {
width: 550px;
max-zoom: 1;
resolution: device;
}
Slide 57
Slide 57 text
/* selective viewport via CSS */
@media … {
@-o-viewport {
… /* for propellerheads */
}
}
Slide 58
Slide 58 text
@media screen {
@-o-viewport {
/* undo meta viewport settings */
width: auto; max-zoom: auto;
}
}
@media screen and (max-device-width: 550px) {
@-o-viewport {
/* 550px viewport on small screen devices */
width: 550px;
}
}
Slide 59
Slide 59 text
No content
Slide 60
Slide 60 text
No content
Slide 61
Slide 61 text
No content
Slide 62
Slide 62 text
@media screen {
@-o-viewport {
/* undo meta viewport settings */
width: auto; max-zoom: auto;
}
}
@media screen and (max-device-width: 550px) {
@-o-viewport {
/* 550px viewport on small screen devices */
width: 550px;
}
}
Slide 63
Slide 63 text
@-o-viewport {
/* minimum of 550px viewport width */
width: 550px auto; max-zoom: auto;
}
Slide 64
Slide 64 text
The future
Slide 65
Slide 65 text
matchMedia
if (window.matchMedia("(min-width: 400px)").matches) {
/* the view port is at least 400 pixels wide */
} else {
/* the view port is less than 400 pixels wide */
}
For IE9+ and Opera, polyfill
github.com/paulirish/matchMedia.js/
Slide 66
Slide 66 text
No content
Slide 67
Slide 67 text
lowsrc
Both images are download; never in spec
Both images are download; never in spec
Slide 68
Slide 68 text
Apple way
Both images are download; requires JS for hires image
Both images are download; requires JS for hires image
Slide 69
Slide 69 text
adaptive-images.com
Add .htaccess and adaptive-images.php to your document-
root folder.
Add one line of JavaScript into the of your site.
Add your CSS Media Query values into $resolutions in the
PHP file.
Slide 70
Slide 70 text
Super WebKit-tastic CSS
selector {background: image-set (url(foo-lowres.png) 1x,
url(foo-highres.png) 2x) center;}
selector {background: image-set
(url(foo-lowres.png) 1x low-bandwidth,
url(foo-highres.png) 2x high-bandwidth);}
http://lists.w3.org/Archives/Public/www-style/2012Feb/1103.html
Slide 71
Slide 71 text
.. extrapolate to HTML?
"I'll post something to the whatwg thread referencing this
proposal."
"I'll post something to the whatwg thread referencing this
proposal."
Slide 72
Slide 72 text
video and Responsive Web Design
Slide 73
Slide 73 text
Adaptive Image Element
www.brucelawson.co.uk/2011/notes-on-adaptive-images-yet-again/
http://www.w3.org/community/respimg/
Slide 74
Slide 74 text
Slide 75
Slide 75 text
“not a magic bullet...”
Slide 76
Slide 76 text
Good or evil?
Florian Rivoal
Slide 77
Slide 77 text
Note to people who weren't at the talk: following slides are
strawman ideas for the next iteration of Media Queries (CSS
4) and are almost certainly to be completely different if they
ever make it into the specification. (CSS 3 MQs became a
"Proposed Recommendation", eg a "Standard" week of 23
April 2012, so very early days!)
Slide 78
Slide 78 text
@media screen and (script) {...}
@media screen and not (script) {…}
http://lists.w3.org/Archives/Public/www-style/2012Jan/0034.html
Slide 79
Slide 79 text
@media (paged) and (interactive:0) {
// I am like a printer
}
@media (paged) and (interactive) {
// I'm a projector, or like a Kindle
}
@media (paged) and (interactive) and (touch)
{
// I'm like a touch-screen Kindle
}
Slide 80
Slide 80 text
@media (touch) and (max-width: 480) {
// looks like an smart phone
}
@media (touch) and (keyboard) and
(min-width:600) {
// looks like a touch-screen laptop
}
Slide 81
Slide 81 text
@media (remote) {
// TV or set-top box?
}
@media (remote) and (hover) {
// Wii?
}
Slide 82
Slide 82 text
No content
Slide 83
Slide 83 text
@media (network: v-slow) {..}
Florian: "It has been proposed. Most people agree that it
would be cool, nobody has a clue about how to spec it in a
way that is useful and implementable. If you find people
with a clue, encourage them to submit proposals to me or
to www-style@w3.org. Use [css4-mediaqueries] in the
subject line, and read lists.w3.org/Archives/Public/www-
style/2012Mar/0691.html first."
Slide 84
Slide 84 text
“embrace the fluidity,
don't fight it”
Slide 85
Slide 85 text
http://futurefriend.ly
Slide 86
Slide 86 text
brucel@opera.com
opera.com/developer
www.brucelawson.co.uk
@brucel