Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Houdini Breakout Session
Search
Surma
November 12, 2016
Technology
4
630
Houdini Breakout Session
Chrome Dev Summit 2016
Surma
November 12, 2016
Tweet
Share
More Decks by Surma
See All by Surma
Know thy buzzwords: HTTP/2
surma
1
550
Houdini – Demystifying CSS
surma
3
320
Progressive Web Apps – Mobile has natively come to the Web
surma
5
300
The Glorious Era of HTTP/2
surma
1
93
Instant Loading
surma
4
1.3k
HTTP/2 101
surma
5
490
What if there isn’t?
surma
0
83
What if there isn’t?
surma
2
180
The Web is a Contender
surma
0
130
Other Decks in Technology
See All in Technology
プライベートクラウドでの効率的な証明書配布戦略 / Efficient Certificate Distribution Strategy in Private Cloud
lycorptech_jp
PRO
0
110
「良さそう」と「とても良い」の間には 「良さそうだがホンマか」がたくさんある / 2025.07.01 LLM品質Night
smiyawaki0820
1
510
LangSmith×Webhook連携で実現するプロンプトドリブンCI/CD
sergicalsix
1
210
Flutter向けPDFビューア、pdfrxのpdfium WASM対応について
espresso3389
0
130
Tokyo_reInforce_2025_recap_iam_access_analyzer
hiashisan
0
180
OPENLOGI Company Profile for engineer
hr01
1
34k
面倒な作業はAIにおまかせ。Flutter開発をスマートに効率化
ruideengineer
0
220
Delta airlines Customer®️ USA Contact Numbers: Complete 2025 Support Guide
deltahelp
0
360
B2C&B2B&社内向けサービスを抱える開発組織におけるサービス価値を最大化するイニシアチブ管理
belongadmin
1
6.3k
MUITにおける開発プロセスモダナイズの取り組みと開発生産性可視化の取り組みについて / Modernize the Development Process and Visualize Development Productivity at MUIT
muit
1
15k
Zephyr RTOSを使った開発コンペに参加した件
iotengineer22
1
200
いつの間にか入れ替わってる!?新しいAWS Security Hubとは?
cmusudakeisuke
0
100
Featured
See All Featured
Typedesign – Prime Four
hannesfritz
42
2.7k
The Success of Rails: Ensuring Growth for the Next 100 Years
eileencodes
45
7.5k
The Cult of Friendly URLs
andyhume
79
6.5k
Building an army of robots
kneath
306
45k
Making the Leap to Tech Lead
cromwellryan
134
9.4k
The MySQL Ecosystem @ GitHub 2015
samlambert
251
13k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
26
2.9k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
PRO
181
53k
Product Roadmaps are Hard
iamctodd
PRO
54
11k
Designing Experiences People Love
moore
142
24k
Code Reviewing Like a Champion
maltzj
524
40k
Optimizing for Happiness
mojombo
379
70k
Transcript
Houdini
Houdini
Typed Object Model
Typed Object Model $('#element').styleMap .set('opacity', new CSSNumberValue(0.5)); $('#element').styleMap .set('height', new
CSSSimpleLength(50, 'px'));
Typed Object Model $('#element').styleMap .set('height', new CSSSimpleLength(50, 'px')); $('#element').styleMap .get('height').value;
// 50 $('#element').styleMap .get('height').type; // ‘px’
Typed Object Model $('#element').styleMap .set('height', new CSSCalcLength('50vh - 20px')); $('#element').styleMap.get('height').vh;
// 50 $('#element').styleMap.get('height').px; // -20
Typed Object Model $('#element').styleMap .set("height", new CSSCalcLength({ vh: 50, px:
-20, }));
Typed Object Model const h = new CSSSimpleLength(50, 'vh') .subtract(new
CSSSimpleLength(20, ‘px')); $('#element').styleMap.set('height', h);
Typed Object Model const h = new CSSSimpleLength(50, 'vh') .subtract(new
CSSSimpleLength(20, ‘px')); $('#element').styleMap.set('height', h); // h == calc(50vh - 20px);
None
Houdini
Houdini X AnimationWorklet
Animation Worklet
None
None
bit.ly/best-effort-scroll position: static;
bit.ly/best-effort-scroll position: static; position: fixed; + JS transform
Animation Worklet <style> :root { animator-root: parallax; } .bg {
animator: parallax; } </style> <div class='bg' style='--parallax-rate: 0.2'></div> <div class='bg' style='--parallax-rate: 0.5'></div> Experimental
Animation Worklet registerAnimator('parallax', class ParallaxAnimator { static inputProperties = ['transform',
'--parallax-rate']; static outputProperties = ['transform']; static rootInputScroll = true; animate(root, children) { const scrollTop = root.scrollOffsets.top; children.forEach(background => parallaxMath(elem, background.styleMap.get('--parallax-rate'))); } }); Experimental
None
Houdini
Paint Worklet
Paint Worklet <div id="myElement"></div> <style> #myElement { --image: url('#someUrlWhichIsLoading'); background-image:
paint(image-with-placeholder); } </style> Experimental
Paint Worklet <script> document.registerProperty({ name: '--image', syntax: '<image>' }); window.paintWorklet.import('paintworklet.js');
</script> Experimental
Paint Worklet registerPaint('image-with-placeholder', class { static get inputProperties() { return
['--image']; } paint(ctx, geom, properties) { // ... } }); Experimental
Paint Worklet paint(ctx, geom, properties) { const img = properties.get('--image');
switch (img.state) { case 'ready': ctx.drawImage(img, 0, 0, geom.width, geom.height); break; case 'pending': drawMountains(ctx); break; case 'invalid': default: drawSadFace(ctx); } } Experimental
None
bit.ly/houdini-updates
None