Fix case-sensitive path

app/src/components/Demo/Key.tsx

@@ -0,0 +1,44 @@
+import * as React from 'react'
+import { Theme, withStyles } from '@material-ui/core'
+
+interface Props {
+  keyboardKey: string
+  classes: any
+}
+
+class Key extends React.Component<Props, {}> {
+  constructor(props: any) {
+    super(props)
+    this.state = { location: 'bottom' }
+  }
+
+  public render() {
+
+    return (
+      <div className={this.props.classes.keyStyle}>
+        <div className={this.props.classes.keyTextStyle}>{this.props.keyboardKey}</div>
+      </div>
+    )
+  }
+}
+
+const style = (theme: Theme) => ({
+  keyStyle: {
+    display: 'inline-block' as 'inline-block',
+    width: '1em',
+    height: '1em',
+    backgroundColor: '#bbb',
+    borderRadius: '10%',
+    verticalAlign: 'middle' as 'middle',
+    textAlign: 'center' as 'center',
+    textShadow: '1px 1px rgba(255,255,255,0.45)',
+    boxShadow: '0.08em 0.15em 0.01em 0px rgba(100,100,100,0.75)',
+  },
+  keyTextStyle: {
+    marginTop: '0.65em',
+    fontSize: '0.4em',
+    fontWeight: 'bold' as 'bold',
+  },
+})
+
+export default withStyles(style)(Key)

app/src/components/Demo/Mouse.tsx

@@ -0,0 +1,78 @@
+import * as React from 'react'
+import { Theme, withStyles } from '@material-ui/core'
+
+interface State {
+  enabled: boolean
+  target: {x: number, y: number}
+  position: {x: number, y: number}
+  stepSizeX: number,
+  stepSizeY: number,
+}
+
+class Demo extends React.Component<{}, State> {
+  private timer: any
+  private frameInterval = 20
+
+  constructor(props: any) {
+    super(props)
+    this.state = { enabled: false, target: { x: 0, y: 0 }, position: { x: 0, y: 0 }, stepSizeX: 1, stepSizeY: 1 }
+  }
+
+  public componentDidMount() {
+    (window as any).demo.enableMouse = () => {
+      this.setState({ enabled: true })
+    }
+    (window as any).demo.moveMouse = (x: number, y: number, animationTime: number) => {
+      const stepSizeX = Math.abs(this.state.position.x - x) / (animationTime / this.frameInterval)
+      const stepSizeY = Math.abs(this.state.position.y - y) / (animationTime / this.frameInterval)
+      this.setState({ stepSizeX, stepSizeY, enabled: true, target: { x, y } })
+      this.moveCloser()
+    }
+  }
+
+  private moveCloser(steps: number = 0) {
+    const steSizeX = Math.min(this.state.stepSizeX, Math.abs(this.state.position.x - this.state.target.x))
+    const steSizeY = Math.min(this.state.stepSizeY, Math.abs(this.state.position.y - this.state.target.y))
+    const dirX = this.state.position.x > this.state.target.x ? -1 : 1
+    const dirY = this.state.position.y > this.state.target.y ? -1 : 1
+
+    if (steSizeX <= 0.1 && steSizeY <= 0.1) {
+      this.timer && clearTimeout(this.timer)
+      return
+    }
+
+    this.setState({
+      position: {
+        x: this.state.position.x + (dirX * steSizeX),
+        y: this.state.position.y + (dirY * steSizeY),
+      },
+    })
+
+    this.timer = setTimeout(() => {
+      this.moveCloser(steps + 1)
+    }, this.frameInterval)
+  }
+
+  public render() {
+    if (!this.state.enabled) {
+      return null
+    }
+    const style = {
+      width: '32px',
+      height: '32px',
+      position: 'fixed' as 'fixed',
+      zIndex: 1000000,
+      filter: 'invert(100%)',
+      left: this.state.position.x + 2,
+      top: this.state.position.y + 2,
+    }
+
+    return (
+      <img src="../cursor.png" style={style} />
+    )
+  }
+}
+
+const style = (theme: Theme) => {}
+
+export default withStyles(style)(Demo)

app/src/components/Demo/ShowText.tsx

@@ -0,0 +1,91 @@
+import * as React from 'react'
+import { Theme, withStyles } from '@material-ui/core'
+import Key from './Key';
+
+interface State {
+  message?: string
+  keys: string[]
+  location: string
+}
+
+
+
+class Demo extends React.Component<{classes: any}, State> {
+  private timer: any
+  constructor(props: any) {
+    super(props)
+    this.state = { location: 'bottom', keys: [] }
+  }
+
+  private clearTimer() {
+    this.timer && clearTimeout(this.timer)
+  }
+
+  public componentDidMount() {
+    (window as any).demo.showMessage = (message: string, location: string, duration: number, keys: string[] = []) => {
+      this.clearTimer()
+      this.setState({ message, location, keys })
+      this.timer = setTimeout(() => this.setState({ message: undefined }), duration)
+    }
+
+    (window as any).demo.hideMessage = () => {
+      this.clearTimer()
+      this.setState({ message: undefined })
+    }
+  }
+
+  public render() {
+    const positions: {[s: string]: number} = {
+      top: 0,
+      bottom: -65,
+      middle: -32,
+    }
+    const style = {
+      position: 'fixed' as 'fixed',
+      left: '5vw',
+      zIndex: 1000000,
+      margin: '30vw auto 50vw',
+      right: '5vw',
+      bottom: `${positions[this.state.location]}vh`,
+    }
+    const style2 = {
+      textAlign: 'center' as 'center',
+      fontSize: '4em',
+      color: 'white',
+      backgroundColor: 'rgba(0, 0, 0, 0.8)',
+      borderRadius: '16px',
+
+    }
+
+    if (!this.state.message) {
+      return null
+    }
+
+    let keys: any[] = []
+    if (this.state.keys.length > 0) {
+      keys = this.state.keys.map(key => [<Key key={key} keyboardKey={key} />])
+        .reduce((prev, current) => {
+          return [prev, '+' as any, current]
+        })
+    }
+
+    return (
+      <div style={style}>
+        <div style={style2}>
+          <span>{this.state.message}</span>
+          {keys.length > 0 ? <div className={this.props.classes.keysStyle}>{keys}</div> : null}
+        </div>
+      </div>
+    )
+  }
+}
+
+const style = (theme: Theme) => ({
+  keysStyle: {
+    fontSize: '1em',
+    display: 'inline-block' as 'inline-block',
+    transform: 'translateY(0.3em) translateX(0.8em)',
+  },
+})
+
+export default withStyles(style)(Demo)

app/src/components/Demo/index.tsx

@@ -0,0 +1,14 @@
+import * as React from 'react'
+import ShowText from './ShowText'
+import Mouse from './Mouse';
+
+(window as any).demo = {}
+
+export default function render(props: any) {
+  return (
+    <span>
+      <ShowText />
+      <Mouse />
+    </span>
+  )
+}