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carbon/components/Carbon.js

262 lines
8.0 KiB
JavaScript

import React, { PureComponent } from 'react'
import * as hljs from 'highlight.js'
import ResizeObserver from 'resize-observer-polyfill'
import debounce from 'lodash.debounce'
import ms from 'ms'
import WindowControls from '../components/WindowControls'
import Watermark from '../components/svg/Watermark'
import CodeMirror from '../lib/react-codemirror'
import { COLORS, LANGUAGE_MODE_HASH, LANGUAGE_NAME_HASH, DEFAULT_SETTINGS } from '../lib/constants'
const handleLanguageChange = (newCode, props) => {
if (props.config.language === 'auto') {
// try to set the language
const detectedLanguage = hljs.highlightAuto(newCode).language
const languageMode =
LANGUAGE_MODE_HASH[detectedLanguage] || LANGUAGE_NAME_HASH[detectedLanguage]
if (languageMode) {
return { language: languageMode.mime || languageMode.mode }
}
}
return { language: props.config.language }
}
class Carbon extends PureComponent {
constructor(props) {
super(props)
this.state = {
language: props.config.language
}
this.handleTitleBarChange = this.handleTitleBarChange.bind(this)
this.codeUpdated = this.codeUpdated.bind(this)
this.onBeforeChange = this.onBeforeChange.bind(this)
this.handleLanguageChange = this.handleLanguageChange.bind(this)
}
componentDidMount() {
this.setState(handleLanguageChange(this.props.children, this.props))
const ro = new ResizeObserver(entries => {
const cr = entries[0].contentRect
this.props.onAspectRatioChange(cr.width / cr.height)
})
ro.observe(this.exportContainerNode)
}
static getDerivedStateFromProps(newProps) {
return handleLanguageChange(newProps.children, newProps) || null
}
codeUpdated(newCode) {
this.handleLanguageChange(newCode, this.props)
this.props.updateCode(newCode)
}
handleTitleBarChange(newTitle) {
this.props.updateTitleBar(newTitle)
}
handleLanguageChange = debounce(
(...args) => this.setState(handleLanguageChange(...args)),
ms('300ms'),
{ trailing: true }
)
onBeforeChange(editor, meta, code) {
return this.codeUpdated(code)
}
render() {
const config = { ...DEFAULT_SETTINGS, ...this.props.config }
const options = {
lineNumbers: config.lineNumbers,
mode: this.state.language || 'plaintext',
theme: config.theme,
scrollBarStyle: null,
viewportMargin: Infinity,
lineWrapping: true,
extraKeys: {
'Shift-Tab': 'indentLess'
}
}
const backgroundImage =
(this.props.config.backgroundImage && this.props.config.backgroundImageSelection) ||
this.props.config.backgroundImage
const content = (
<div id="container">
{config.windowControls ? (
<WindowControls
titleBar={this.props.titleBar}
theme={config.windowTheme}
handleTitleBarChange={this.handleTitleBarChange}
/>
) : null}
<CodeMirror
className={`CodeMirror__container window-theme__${config.windowTheme}`}
onBeforeChange={this.onBeforeChange}
value={this.props.children}
options={options}
/>
{config.watermark && <Watermark />}
<div id="container-bg">
<div className="white eliminateOnRender" />
<div className="alpha eliminateOnRender" />
<div className="bg" />
</div>
<style jsx>
{`
#container {
position: relative;
min-width: ${config.widthAdjustment ? '90px' : '680px'};
max-width: 1024px; /* The Fallback */
max-width: 92vw;
padding: ${config.paddingVertical} ${config.paddingHorizontal};
}
#container :global(.watermark) {
fill-opacity: 0.3;
position: absolute;
z-index: 2;
bottom: calc(${config.paddingVertical} + 16px);
right: calc(${config.paddingHorizontal} + 16px);
}
#container #container-bg {
position: absolute;
top: 0px;
right: 0px;
bottom: 0px;
left: 0px;
}
#container .white {
background: #fff;
position: absolute;
top: 0px;
right: 0px;
bottom: 0px;
left: 0px;
}
#container .bg {
${this.props.config.backgroundMode === 'image'
? `background: url(${backgroundImage});
background-size: cover;
background-repeat: no-repeat;`
: `background: ${this.props.config.backgroundColor || config.backgroundColor};
background-size: auto;
background-repeat: repeat;`} position: absolute;
top: 0px;
right: 0px;
bottom: 0px;
left: 0px;
}
#container .alpha {
position: absolute;
top: 0px;
right: 0px;
bottom: 0px;
left: 0px;
background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAMUlEQVQ4T2NkYGAQYcAP3uCTZhw1gGGYhAGBZIA/nYDCgBDAm9BGDWAAJyRCgLaBCAAgXwixzAS0pgAAAABJRU5ErkJggg==);
}
#container :global(.cm-s-dracula .CodeMirror-cursor) {
border-left: solid 2px #159588;
}
#container :global(.cm-s-solarized) {
box-shadow: none;
}
#container :global(.cm-s-solarized.cm-s-light) {
text-shadow: #eee8d5 0 1px;
}
#container :global(.CodeMirror-gutters) {
background-color: unset;
border-right: none;
}
#container :global(.CodeMirror__container) {
min-width: inherit;
position: relative;
z-index: 1;
border-radius: 5px;
${config.dropShadow
? `box-shadow: 0 ${config.dropShadowOffsetY} ${
config.dropShadowBlurRadius
} rgba(0, 0, 0, 0.55)`
: ''};
}
#container :global(.CodeMirror__container .CodeMirror) {
height: auto;
min-width: inherit;
padding: 18px 18px;
${config.lineNumbers ? 'padding-left: 12px;' : ''} border-radius: 5px;
font-family: ${config.fontFamily}, monospace !important;
font-size: ${config.fontSize};
font-variant-ligatures: contextual;
font-feature-settings: 'calt' 1;
user-select: none;
}
#container :global(.CodeMirror-scroll) {
overflow: hidden !important;
}
#container :global(.window-theme__sharp > .CodeMirror) {
border-radius: 0px;
}
#container :global(.window-theme__bw > .CodeMirror) {
border: 2px solid ${COLORS.SECONDARY};
}
#container :global(.window-controls + .CodeMirror__container > .CodeMirror) {
padding-top: 48px;
}
`}
</style>
</div>
)
return (
<div id="section">
<div id="export-container" ref={ele => (this.exportContainerNode = ele)}>
{content}
<div id="twitter-png-fix" />
</div>
<style jsx>
{`
#section,
#export-container {
height: 100%;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
overflow: hidden;
}
/* forces twitter to save images as png — https://github.com/dawnlabs/carbon/issues/86 */
#twitter-png-fix {
height: 1px;
width: 100%;
background: rgba(0, 0, 0, 0.01);
}
`}
</style>
</div>
)
}
}
export default Carbon