From 57e5ea1f424ea2567e10c3945d9273a92a547332 Mon Sep 17 00:00:00 2001
From: Martin Ashby <martin@martin-laptop.lan>
Date: Tue, 15 May 2018 22:12:09 +0100
Subject: Basic should be working

---
 src/App.js | 226 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 226 insertions(+)
 create mode 100644 src/App.js

(limited to 'src/App.js')

diff --git a/src/App.js b/src/App.js
new file mode 100644
index 0000000..221fbd4
--- /dev/null
+++ b/src/App.js
@@ -0,0 +1,226 @@
+import React, { Component } from 'react'
+import logo from './logo.svg'
+import './App.css'
+
+const NO_OP = 'NO_OP'
+const SET_PIXEL = 'SET_PIXEL'
+const CLEAR = 'CLEAR'
+
+function sendAction(websocket, action) {
+  let actionStr = JSON.stringify(action)
+  websocket.send(actionStr)
+}
+
+function setPixel(websocket, x, y, r, g, b) {
+  sendAction(websocket, {
+    type: SET_PIXEL,
+    x: x,
+    y: y,
+    r: r, 
+    g: g,
+    b: b
+  })
+}
+
+function clear(websocket) {
+  sendAction(websocket, { type: CLEAR })
+}
+
+function noop(websocket) {
+  sendAction(websocket, { type: NO_OP })
+}
+
+function rgb(item) {
+  return {
+    r: item[0],
+    g: item[1],
+    b: item[2]
+  }
+}
+
+const colorPalette = [
+  [0,0,0],
+  [132,0,0],
+  [0,132,0],
+  [132,132,0],
+  [0,0,132],
+  [132,0,132],
+  [0,132,132],
+  [132,132,132],
+  [198,198,198],
+  [255,0,0],
+  [0,255,0],
+  [255,255,0],
+  [0,0,255],
+  [255,0,255],
+  [0,255,255],
+  [255,255,255],
+]
+
+
+class Palette extends Component {
+  render() {
+    let paletteListItems = colorPalette.map((item) => {
+      var className = "paletteitem"
+      let { r, g, b } = rgb(item)
+      let selected = rgb(this.props.selectedColor)
+      if (r === selected.r && g === selected.g && b === selected.b) {
+        className += " selected"
+      }
+      return <div
+        onClick={() => this.props.onSelectColor([r, g, b])}
+        style={{background: `rgb(${r},${g},${b})`}} 
+        className={className}
+        key={r*10000+g*1000+b}/>
+    })
+    return (
+      <div className="palette">
+        {paletteListItems}
+      </div>)
+  }
+}
+
+class PaintArea extends Component {
+  constructor(props) {
+    super(props)
+    this.handleMouseMove = this.handleMouseMove.bind(this)
+
+    this._onMouseDown = this._onMouseDown.bind(this)
+    this._onMouseUp = this._onMouseUp.bind(this)
+    this.state = {
+      mouseDown: false
+    }
+  }
+
+  _onMouseDown() {
+    this.setState({ mouseDown: true })
+  }
+
+  _onMouseUp() {
+    this.setState({ mouseDown: false })
+  }
+
+  componentWillMount() {
+    document.addEventListener('mousedown', this._onMouseDown)
+    document.addEventListener('mouseup', this._onMouseUp)
+  }
+
+  componentWillUnmount() {
+    document.removeEventListener('mousedown', this._onMouseDown)
+    document.removeEventListener('mouseup', this._onMouseUp)
+  }
+
+  handleMouseMove(x, y) {
+    if (this.state.mouseDown) {
+      this.props.onTool(x, y)
+    }
+  }
+
+  render() {
+    let cells = this.props.data.map((row, iy) => {
+      let rowCells = row.map((cell, ix) => {
+          let r = cell[0]
+          let g = cell[1]
+          let b = cell[2]
+          return <td
+            onMouseMove={() => this.handleMouseMove(ix, iy)}
+            onClick={() => this.props.onTool(ix, iy)}
+            className="paintareacell"
+            style={{
+              background: `rgb(${r},${g},${b})`
+            }}
+            key={(ix * 100000) + iy}/>
+      })
+      return <tr key={iy}>{rowCells}</tr>
+    })
+    
+    return (
+      <table 
+        className="paintarea"
+        draggable={false}>
+        <tbody>
+          {cells}
+        </tbody>
+      </table>
+    )
+  }
+}
+
+class App extends Component {
+  constructor(props) {
+    super(props)
+
+    this.state = {
+      connected: false,
+      pixels: [],
+      selectedColor: [0, 0, 0]
+    }
+    this._connectWebsocket = this._connectWebsocket.bind(this)
+    this._onMessage = this._onMessage.bind(this)
+    this._onOpen = this._onOpen.bind(this)
+    this._onClose = this._onClose.bind(this)
+    this._onError = this._onError.bind(this)
+
+    this.paintCell = this.paintCell.bind(this)
+    this._connectWebsocket()
+  }
+
+  _onMessage({data}) {
+    let pixels = JSON.parse(data)
+    pixels.forEach(row => {
+      let rowNums = row.map((col) => col.some((it) => it > 0))
+      console.log(...rowNums)
+    });
+
+    this.setState({
+      pixels: pixels
+    })
+  }
+
+  _onOpen() {
+    this.setState({connected: true})
+    noop(this._websocket)
+  }
+
+  _onClose() {
+    this.setState({connected: false})
+    this._connectWebsocket()
+  }
+
+  _onError() {
+    this.setState({connected: false})
+    this._connectWebsocket()
+  }
+
+  _connectWebsocket() {
+    this._websocket = new WebSocket('ws://' + window.location.hostname + ':3001/ws')
+    this._websocket.onmessage = this._onMessage
+    this._websocket.onopen = this._onOpen
+    this._websocket.onclose = this._onClose
+    this._websocket.onerror = this._onError
+  }
+
+  paintCell(x, y) {
+    let { r, g, b } = rgb(this.state.selectedColor)
+    setPixel(this._websocket, x, y, r, g, b)
+  }
+
+  render() {
+    let connectedText = this.state.connected ? "Connected" : "Not connected"
+    return (
+      <div className="App">
+        <div>
+          <span>{connectedText}</span>
+        </div>
+        <PaintArea 
+          data={this.state.pixels}
+          onTool={this.paintCell}/>
+        <Palette 
+          selectedColor={this.state.selectedColor}
+          onSelectColor={(color) => this.setState({selectedColor: color})} />
+      </div>
+    );
+  }
+}
+
+export default App;
-- 
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