Weird Browsers

?weird browsers? webperfdays amsterdam — october 31st 2015

402 Edge 12 400 521 Safari 9 Chrome 46 0 555 466 Firefox 41 desktop browsers results on html5test.com

402 Edge 12 400 521 Safari 9 Chrome 46 0 555 466 Firefox 41 desktop browsers results on html5test.com

402 Edge 12 458 Edge 13 400 521 Safari 9 Chrome 46 0 555 16 336 466 Internet Explorer 6 Internet Explorer 11 Firefox 41 desktop browsers results on html5test.com

?weird browsers?

browsers and devices that do not adhere to current expectations

if (‘ontouchstart’ in window) { element.addEventListener(‘touchstart’, function(e) { … }); } else { element.addEventListener(‘click’, function(e) { … }); }

?weird browsers?

?weird browsers?

game consoles

portable game consoles

smart tvs

e-readers

smartwatches

photo cameras

Andre Jay Meissner cars

smart tvs, set-top boxes and consoles

“big screen browsers”

television browsers are pretty good the last generation of television sets use operating systems that originate from mobile

281 Google TV 418 LG WebOS 414 238 Panasonic Firefox OS LG Netcast 0 555 301 407 Panasonic Samsung Viera 2014 465 Samsung Tizen 449 Opera Devices smart tv results on html5test.com

53 309 Playstation 3 Playstation TV 98 328 Xbox 360 Playstation 4 286 Xbox One 0 555 66 311 Wii Wii U console results on html5test.com

1 control

the biggest challenge of of television browsers

navigation (without mouse or touchscreen)

d-pad

navigation with the d-pad

but it can be worse: moving the cursor with the arrow keys

alternatives

analog controllers

remotes with trackpad

remotes with airmouse

second screen

many manufacturers also create apps for controlling the smart tv, console or set-top box

text input (without keyboard)

d-pads

text input with the d-pad

alternatives

remotes with keyboards

wireless keyboards

and apps

gesture control (throw your hands up in the air, and wave ’em like you just don’t care)

navigation with gesture control

can we control these input methods directly from javascript?

the d-pad maybe

1 keyboard events window.addEventListener(“keypress”, function(e) { e.preventDefault(); // no navigation … });

the gamepad maybe

1 the gamepad api var gamepads = navigator.getGamepads(); for (var i = 0; i < gamepads.length; i++) { … }

2 wii u api window.setInterval(function() { var state = window.wiiu.gamepad.update(); … }, 100);

the webcam no*

2 the difference between a television and a monitor

overscan (let’s make it a bit more complicated)

due to historical reasons televisions will not show the borders of the image

1920 pixels the television enlarges all images from the hdmi input by 5%

1920 pixels the television enlarges all images from the hdmi input by 5%

the image is then cropped to 1920 by 1080 pixels

the image is then cropped to 1920 by 1080 pixels

overscan causes blurry output +5%

solution 1 overscan correction

1920 pixels the browser does not use the edges of the image

1920 pixels the television will enlarge the image by 5%

and the content is now fully visible, the unused border is cropped out of the final image

but not every television set enlarges the image by exactly 5%, this can vary between manufacturers and models

configure the correct overscan correction in the system preferences

the playstation 4 will always show the browser without overscan correction in full screen mode

the playstation 4 will always show the browser without overscan correction in full screen mode

solution 2 no overscan

it is possible to disable overscan on many television sets ‘screen fit’, ‘pixel perfect’ or ‘just scan’

the playstation 3 always shows the browser with overscan correction

the viewport (i really need some aspirin!)

the visual viewport the visual viewport determines which part of the website will be visible measured in device pixels

the visual viewport the visual viewport determines which part of the website will be visible measured in device pixels

the visual viewport the visual viewport determines which part of the website will be visible measured in device pixels

the layout viewport the layout viewport determines the width in css pixels on which the site will be rendered

the layout viewport the layout viewport determines the width in css pixels on which the site will be rendered

the layout viewport the layout viewport determines the width in css pixels on which the site will be rendered

the default layout viewport is different on every smart tv, console or set-top box between 800 and 1920 css pixels

it is possible to change the width of the layout viewport with the ‘meta viewport’ tag physical device pixels device scale factor

complication: meta viewport is not supported it is not possible to get the same layout viewport width in all of the different browsers

complication: device pixel ratio is not supported there is no proper way to show images with the same resolution as the physical screen

800 pixels nintendo wii

980 pixels nintendo wii u

960 pixels lg webos

1041 of 1050 pixels microsoft xbox 360

1200 of 1236 pixels microsoft xbox one

1824 pixels sony playstation 3

1920 pixels sony playstation 4

Nintendo Wii 800 LG WebOS 960 Nintendo Wii U 980 Philips 2014 series 980 Google TV 1024 Playstation TV 1024 Samsung Tizen 1024 Xbox 360 1051 Xbox One 1200 LG Netcast 1226 Panasonic Viera 1256 Opera Devices 1280 Samsung 2014 series 1280 Panasonic Firefox OS 1536 Playstation 3 1824 Playstation 4 1920

device pixels != device pixels (of course not)

sometimes devices pixels are not physical devices pixels, but virtual device pixels the browser renders in a lower resolution which is upscaled to the resolution of the display

3 distance to the screen

“Make fonts and graphics on the site larger to account for viewing distance. People sit proportionally farther from a TV than from a computer monitor of the same size.” – Internet Explorer for Xbox One Developer Guide https://msdn.microsoft.com/en-us/library/dn532261(v=vs.85).aspx

responsive design the size of the contents is determined by the width of the viewport

1 use percentages for positioning .left { width: 60%; } .right { left: 60%; width: 40%; }

2 base the fontsize on the viewport document.body.style.fontSize = ((window.innerWidth / 1920) * 300) + ‘%’;

3 or maybe use viewport units – with polyfill body { font-size: 3vw; } .left { width: 60vw; height: 100vh; } .right { width: 40vw; height: 100vh; }

4 use a safe margin around the contents body { padding: 5%; }

youtube tv website

identifying smart tv’s (css for televisions)

1 × css media types @media tv { body { font-size: 300%; } }

1 css media types all television browsers use the css media type ‘screen’

2 × screen size if (screen.width == 1920 && screen.height == 1080) { document.body.className += ” television”; }

2 screen size monitors and phones often use hd resolutions, television browsers often use other resolutions

3 × useragent sniffing if (navigator.userAgent.search(/TV/i) >= 0) { document.body.className += ” television”; }

3 useragent sniffing not all smart tv’s are recognisable Mozilla/5.0 (X11; Linux; ko-KR) AppleWebKit/534.26+ (KHTML, like Gecko) Version/5.0 Safari/534.26+

4 couch mode the only reliable way to optimise a website for television is to make two different websites… or give the user the ability to switch on couch mode

4 be careful with feature detection

“Basically every feature that talks to the operating system or hardware, is suspect.” – Me http://blog.html5test.com/2015/08/the-problems-with-feature-detection/

if (!!navigator.geolocation) { navigator.geolocation.getCurrentPosition( success, failure ); } else { // alternative }

if (!!navigator.geolocation) { navigator.geolocation.getCurrentPosition( success, failure ); } 1 failure is called with a “permission denied” error code 2 no callback at all to success or failure

if (!!navigator.geolocation) { navigator.geolocation.getCurrentPosition( success, failure ); } 3 success is called with longitude = 0 and latitude = 0 4 success is called with the coordinates of Mountain View, USA

is there a future for web apps on the big screen?

the new apple tv does not ship with a browser by default

android tv does not ship with a browser by default

?weird browsers!

“We cannot predict future behavior from a current experience that sucks” – Jason Grigsby http://blog.cloudfour.com/on-the-device-context-continuum/

but wait…

weird browsers!

weird browsers!

rowsers browsers browsers browsers wsers! browsers! browsers! browsers browsers browser browsers browsers brows

one arm arm injury new parent situational permanent https://www.microsoft.com/en-us/design/practice

thank you niels leenheer @html5test