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index.html
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<!DOCTYPE html>
<html>
<head>
<title>Title</title>
<meta charset="utf-8">
<style>
@import url(https://fonts.googleapis.com/css?family=Yanone+Kaffeesatz);
@import url(https://fonts.googleapis.com/css?family=Droid+Serif:400,700,400italic);
@import url(https://fonts.googleapis.com/css?family=Ubuntu+Mono:400,700,400italic);
body { font-family: 'Helvetica'; }
h1, h2, h3 {
font-family: 'Yanone Kaffeesatz';
font-weight: normal;
}
.remark-code, .remark-inline-code { font-family: 'Ubuntu Mono'; }
.remark-inline-code { background: #F0F0F0; padding: 4px; border-radius: 2px; }
iframe { width: 100%; height: 100%; }
p, li { line-height: 1.4; }
td { min-width: 170px; border- }
table { border-collapse: collapse; }
</style>
</head>
<body>
<textarea id="source">
class: center, middle
# CSS Layout API!
##### ikilpatrick@ Apr 2018
---
# Use-cases 🤔 ("blocky")
- Masonry
- Constraint Based Layouts
- Subgrid
---
# Use-cases 🤔 (non-obvious)
- Container queries
- (efficent queries without having to perform style-recalc or full layouts).
- Layout Animation Transitions
- (need to perform layout at each time-step, but can perform more targeted recalc-styles).
---
# Use-cases 🤔 (text)
- Next phase of the API will allow "line-by-line" layout.
<img src="shape-inside.png" />
---
# Use-cases 🤔 (fragmentation)
- And the phase after that fragmentation
<img src="fragmentation.svg" height="400"/>
---
# Getting started
```html
<style>
#some-div { display: layout(example); }
</style>
<script>
CSS.layoutWorklet.addModule('layout.js');
</script>
```
```js
// layout.js
registerLayout('example', class {
*intrinsicSizes() {}
*layout() {}
});
```
---
class: center, middle
<iframe src="1.html" frameborder="0"></iframe>
---
class: center, middle
<iframe src="2.html" frameborder="0"></iframe>
---
class: center, middle
<iframe src="3.html" frameborder="0"></iframe>
---
class: center, middle
<iframe src="4.html" frameborder="0"></iframe>
---
# Missing Parts - edges
```js
registerLayout('edges', class {
*intrinsicSizes() {}
*layout(_, edges, __, ___) {
edges.scrollbar.inlineStart; // scrollbar left size.
edges.all.block; // border-scrollbar-padding top and bottom size.
}
});
```
---
# Missing Parts - additional constraints (1)
```js
registerLayout('additional-constraints', class {
*intrinsicSizes() {}
*layout(children, edges, constraints, styleMap) {
const child = children[0];
// Sending additional constraints to child.
const fragment = yield child.layoutNextFragment({
availableInlineSize: 100, /* zero if not specified */
availableBlockSize: 200, /* zero if not specified */
percentageInlineSize: 50,
percentageBlockSize: 50,
});
}
});
```
---
# Missing Parts - additional constraints (2)
```js
registerLayout('additional-constraints', class {
*intrinsicSizes() {}
*layout(children, edges, constraints, styleMap) {
// Receiving constraints from parent.
const {
availableInlineSize,
availableBlockSize,
percentageInlineSize,
percentageBlockSize
} = constraints;
}
});
```
---
#Missing Parts - arbitary data passing (1)
```js
registerLayout('arbitary-data', class {
*intrinsicSizes() {}
*layout(children, edges, constraints, styleMap) {
// Receiving data from parent.
const {floatingObjects} = constraints.data; // data passed in from parent.
const child = children[0];
// Sending data to child.
const fragment = yield child.layoutNextFragment({
data: {floatingObjects: []}
});
}
});
```
---
#Missing Parts - arbitary data passing (2)
```js
registerLayout('arbitary-data', class {
*intrinsicSizes() {}
*layout(children, edges, constraints, styleMap) {
const child = children[0];
// Receiving data from child.
const fragment = yield child.layoutNextFragment({});
const {floatingObjects} = fragment.data;
// Sending data to parent.
return {autoBlockSize: 0, data: {floatingObjects}};
}
});
```
---
class: center, middle
# The Future!
##### (part 1)
---
# Line-by-line Layout
```js
registerLayout('lines', class {
static get layoutOptions() { return {childDisplay: 'normal'} }
*layout([child]) {
let breakToken = null;
const childFragments = [];
do {
const fragment = yield child.layoutNextFragment({
availableInlineSize,
breakToken
});
childFragments.push(fragment);
breakToken = fragment.breakToken;
} while (breakToken);
// Indent the first line.
childFragments[0].inlineOffset += 20;
}
});
```
</textarea>
<script src="https://remarkjs.com/downloads/remark-latest.min.js">
</script>
<script>
var slideshow = remark.create();
slideshow.on('afterShowSlide', function (slide) {
const container = document.querySelector('.remark-slide-container.remark-visible .remark-slide-content');
const iframe = document.querySelector('.remark-slide-container.remark-visible iframe');
if (iframe) {
container.style.padding = '0.2em';
}
// Slide is the slide being navigated to
});
</script>
</body>
</html>