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
Auto Layout? Oh boy!
Search
Cesare Rocchi
April 06, 2013
Technology
0
140
Auto Layout? Oh boy!
Cocoaconf Dallas 2013
Cesare Rocchi
April 06, 2013
Tweet
Share
More Decks by Cesare Rocchi
See All by Cesare Rocchi
In the customer's shoes
funkyboy
0
130
What the heck is JavaScriptCore?
funkyboy
0
150
The new WebKit is awesome
funkyboy
1
370
The new WebKit is AWESOME
funkyboy
0
510
Designing with Cognitive Science in Mind
funkyboy
0
150
The new WebKit is AWESOME
funkyboy
0
180
Choosing a back end for your mobile app:
funkyboy
0
640
Apps and Mental Models
funkyboy
0
220
Auto Layout? Oh boy!
funkyboy
1
240
Other Decks in Technology
See All in Technology
All About Sansan – for New Global Engineers
sansan33
PRO
1
1.2k
OSSで50の競合と戦うためにやったこと
yamadashy
3
940
AI時代の開発を加速する組織づくり - ブログでは書けなかったリアル
hiro8ma
1
260
Kubernetes self-healing of your workload
hwchiu
0
370
Contract One Engineering Unit 紹介資料
sansan33
PRO
0
9k
「タコピーの原罪」から学ぶ間違った”支援” / the bad support of Takopii
piyonakajima
0
120
Databricks AI/BI Genie の「値ディクショナリー」をAmazonの奥地(S3)まで見に行く
kameitomohiro
1
380
HonoとJSXを使って管理画面をサクッと型安全に作ろう
diggymo
0
170
旅で応援する✈️ NEWTが目指すコミュニティ支援とあたらしい旅行 / New Travel: Supporting by NEWT on Your Journey
mii3king
0
140
「改善」ってこれでいいんだっけ?
ukigmo_hiro
0
410
Dify on AWS 環境構築手順
yosse95ai
0
110
CREが作る自己解決サイクルSlackワークフローに組み込んだAIによる社内ヘルプデスク改革 #cre_meetup
bengo4com
0
290
Featured
See All Featured
Embracing the Ebb and Flow
colly
88
4.9k
Fight the Zombie Pattern Library - RWD Summit 2016
marcelosomers
234
17k
Art, The Web, and Tiny UX
lynnandtonic
303
21k
Evolution of real-time – Irina Nazarova, EuRuKo, 2024
irinanazarova
9
990
Distributed Sagas: A Protocol for Coordinating Microservices
caitiem20
333
22k
Building Flexible Design Systems
yeseniaperezcruz
329
39k
How to Think Like a Performance Engineer
csswizardry
27
2.1k
Making the Leap to Tech Lead
cromwellryan
135
9.6k
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
10
880
YesSQL, Process and Tooling at Scale
rocio
173
15k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
34
2.5k
Rebuilding a faster, lazier Slack
samanthasiow
84
9.2k
Transcript
Auto Layout? Oh boy! Rocchi Cesare _funkyboy funkyboy
Outline History Frames Spring&Struts Auto layout
Who am I?
UX designer and developer
Who are you?
Giveaway
None
Lyrics
“Ring! Ring! It's 7:00 A.M.! Move y'self to go again”
“Ring! Ring! It's 7:00 A.M.! Move y'self to go again”
The Magnificent Seven - The Clash
A bit of history
480x800 1280x720 960x640 960x540 854x480 640x480 2560x1600
320x480 480x800 1280x720 1280x800 824x1200 768x1024 960x640 960x540 854x480 640x480
2560x1600 1136x768
320x480 480x800 640x360 1280x720 1280x800 824x1200 768x1024 960x640 960x540 1280x768
854x480 640x480 2560x1600 1136x768
240x320 320x480 480x800 640x360 1280x720 1280x800 1080x1920 824x1200 768x1024 600x800
960x640 960x540 1280x768 854x480 640x480 2560x1600 1136x768
A bit of history
A bit of history
A bit of history
A bit of history
None
None
What is layout?
It’s a process
It’s a process Position Size
Web people have CSS
Web people have CSS div div div
http://mediaqueri.es
http://joshemerson.co.uk/rsd/
In the beginning ...
Frames UIView *newView = [[UIView alloc] initWithFrame: CGRectMake(10, 10, 100,
100)]; [self.view addSubview:newView];
Frames UIView *newView = [[UIView alloc] initWithFrame: CGRectMake(10, 10, 100,
100)]; [self.view addSubview:newView]; CGRect frame = newView.frame; frame.size.height = 200; frame.size.width = 200; frame.origin.x = 20; frame.origin.y = 20; newView.frame = frame;
Frames UIView *newView = [[UIView alloc] initWithFrame: CGRectMake(10, 10, 100,
100)]; [self.view addSubview:newView]; CGRect frame = newView.frame; frame.size.height = 200; frame.size.width = 200; frame.origin.x = 20; frame.origin.y = 20; newView.frame = frame; newView.center = newView.superview.center;
Frames #define PADDING 20 CGRect supFrame = newView.superview.frame; CGRect frame
= newView.frame; frame.size.height = supFrame.size.height - PADDING; frame.size.width = supFrame.size.width - PADDING; frame.origin.x = PADDING; frame.origin.y = PADDING; newView.frame = frame;
Spring & Struts
Spring & Struts Autosizing mask
Spring & Struts Autosizing mask How do I change when
superview changes?
Let’s see
Auto Layout
Migrate to Auto Layout
None
Mental shift
Impacts your life
Wife: “Honey are you still working with that auto layout
thing?”
Wife: “Honey are you still working with that auto layout
thing?” Me: “Yeah, how do you know?”
Wife: “Honey are you still working with that auto layout
thing?” Me: “Yeah, how do you know?” Wife: “Because I am hearing more ‘f*ck’ and ‘sh!t’ than usual”.
You DON’T setFrame: anymore
You DON’T setFrame: anymore You DECLARE a layout
You express relations between elements
constraint3 constraint4 constraint1 constraint2
constraint3 constraint4 constraint1 constraint2
constraint3 constraint4 constraint1 constraint2
?
1L 20cl 20cl 20cl
Linear equations
ax + by = c Linear equations
ax + by = c Linear equations
ax + by = c 2x + 2y = 4
Linear equations
ax + by = c 2x + 2y = 4
=> [x = 1, y = 1] Linear equations
ax + by = c 2x + 2y = 4
=> [x = 1, y = 1] 2(x+5)-7 = 3(x-2) Linear equations
ax + by = c 2x + 2y = 4
=> [x = 1, y = 1] 2(x+5)-7 = 3(x-2) => [x = 9] Linear equations
0x + 1 = 2
Linear equations One solution No solution Infinite solutions
One solution
One solution “Hey lady, you got the love I need
...”
One solution “Hey lady, you got the love I need
...” Over the Hills and Far Away - Led Zeppelin
No solution
“Pleased to meet you hope you guess my name ...”
No solution
“Pleased to meet you hope you guess my name ...”
No solution Sympathy For The Devil - The Rolling Stones
Infinite solutions
“It's gettin' dark, too dark to see ...” Infinite solutions
“It's gettin' dark, too dark to see ...” Infinite solutions
Knockin' on Heaven's Door - Bob Dylan
Geometry helps
Geometry helps One solution x -2y = -1 4x +
3y = 7
Geometry helps No solution 3x + 2y = 12 3x
+ 2y = 6
Geometry helps Infinite solutions y = 10x + 4 -30x
- 12 = -3y
Linear programming
Linear programming Solves equations with variables Looks for an objective
function
Auto Layout is a big objective function
Auto Layout is a big objective function
Likes one solution scenarios Multiple solutions => ambiguous layout No
solution => conflicting constraints
No order in grinding ...
No order in grinding ... view1.top = view2.bottom + 10
No order in grinding ... view1.top = view2.bottom + 10
Priorities
“Left margin is always 20” “Top margin is always 20”
Let’s see
“Left edge is 20” “Top edge is 20” “Width is
100” “Height is 100”
Enough IB
NSLayoutConstraint
[NSLayoutConstraint constraintWithItem:newElement
[NSLayoutConstraint constraintWithItem:newElement attribute:NSLayoutAttributeLeft
[NSLayoutConstraint constraintWithItem:newElement attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual
[NSLayoutConstraint constraintWithItem:newElement attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:[newElement superview]
[NSLayoutConstraint constraintWithItem:newElement attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:[newElement superview] attribute:NSLayoutAttributeLeft
[NSLayoutConstraint constraintWithItem:newElement attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:[newElement superview] attribute:NSLayoutAttributeLeft multiplier:1.0
[NSLayoutConstraint constraintWithItem:newElement attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:[newElement superview] attribute:NSLayoutAttributeLeft multiplier:1.0 constant:0.0];
More complex example
Zen
Zen NSArray *constraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|[newEl]|" options:0 metrics:nil views:NSDictionaryOfVariableBindings(newEl)];
Zen @"V:|[newElement]-100-|"
Zen @"V:[btn1]-[btn2]"
Zen @"V:[btn1]-100-[btn2]"
Zen @"[btn(>=100)]"
Zen @"[btn(>=100@500)]"
Zen @"[btn1(>=80, <=120)]"
Animation
Alternative
Alternative https://github.com/RolandasRazma/RRAutoLayout if(!NSClassFromString(@"NSLayoutConstraint")) { objc_registerClassPair( objc_allocateClassPair( [RRLayoutConstraint class], "NSLayoutConstraint", 0));
}
DON’T think in terms of frames
Should I use Auto Layout?
“The answer my friend is ...”
“The answer my friend is ...” Blowin' In The Wind
- Bob Dylan
Summing up Did blocks substitute delegates?
Thank you!
Coordinates twitter.com/_funkyboy app.net/funkyboy
[email protected]
http://studiomagnolia.com