Add touch backend example

azuqua · May 11, 2017 · b47a8e4 · b47a8e4
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diff --git a/examples/mobile-backend/.gitignore b/examples/mobile-backend/.gitignore
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+# See https://help.github.com/ignore-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
diff --git a/examples/mobile-backend/README.md b/examples/mobile-backend/README.md
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+# Basic Example
+
+```bash
+# in this directory
+npm install
+npm start
+```
diff --git a/examples/mobile-backend/package.json b/examples/mobile-backend/package.json
@@ -0,0 +1,22 @@
+{
+  "name": "mobile-backend",
+  "version": "0.1.0",
+  "private": true,
+  "devDependencies": {
+    "react-scripts": "0.9.5"
+  },
+  "dependencies": {
+    "prop-types": "^15.5.9",
+    "react": "^15.5.4",
+    "react-dnd": "^2.4.0",
+    "react-dnd-scrollzone": "^3.1.0",
+    "react-dnd-touch-backend": "^0.3.10",
+    "react-dom": "^15.5.4"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test --env=jsdom",
+    "eject": "react-scripts eject"
+  }
+}
diff --git a/examples/mobile-backend/public/favicon.ico b/examples/mobile-backend/public/favicon.ico
diff --git a/examples/mobile-backend/public/index.html b/examples/mobile-backend/public/index.html
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+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
+    <!--
+      Notice the use of %PUBLIC_URL% in the tag above.
+      It will be replaced with the URL of the `public` folder during the build.
+      Only files inside the `public` folder can be referenced from the HTML.
+
+      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
+      work correctly both with client-side routing and a non-root public URL.
+      Learn how to configure a non-root public URL by running `npm run build`.
+    -->
+    <title>React App</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <!--
+      This HTML file is a template.
+      If you open it directly in the browser, you will see an empty page.
+
+      You can add webfonts, meta tags, or analytics to this file.
+      The build step will place the bundled scripts into the <body> tag.
+
+      To begin the development, run `npm start`.
+      To create a production bundle, use `npm run build`.
+    -->
+  </body>
+</html>
diff --git a/examples/mobile-backend/src/App.css b/examples/mobile-backend/src/App.css
@@ -0,0 +1,6 @@
+.App {
+  width: 500px;
+  height: 500px;
+  overflow: scroll;
+  border: solid 2px black;
+}
diff --git a/examples/mobile-backend/src/App.js b/examples/mobile-backend/src/App.js
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+import React, { Component } from 'react';
+import TouchBackend from 'react-dnd-touch-backend';
+import { DragDropContextProvider } from 'react-dnd';
+import withScrolling from 'react-dnd-scrollzone';
+import DragItem from './DragItem';
+import DragPreview from './DragPreview';
+import './App.css';
+
+const ScrollingComponent = withScrolling('div');
+
+const ITEMS = [1,2,3,4,5,6,7,8,9,10];
+
+export default class App extends Component {
+  render() {
+    return (
+      <DragDropContextProvider backend={TouchBackend({ enableMouseEvents: true })}>
+        <ScrollingComponent className="App">
+          {ITEMS.map(n => (
+            <DragItem key={n} label={`Item ${n}`} />
+          ))}
+          <DragPreview />
+        </ScrollingComponent>
+      </DragDropContextProvider>
+    );
+  }
+}
diff --git a/examples/mobile-backend/src/DragItem.css b/examples/mobile-backend/src/DragItem.css
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+.DragItem {
+  width: 100%;
+  border: solid 1px black;
+  padding: 30px;
+}
diff --git a/examples/mobile-backend/src/DragItem.js b/examples/mobile-backend/src/DragItem.js
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+import React, { PureComponent } from 'react';
+import PropTypes from 'prop-types';
+import { DragSource } from 'react-dnd';
+import './DragItem.css';
+
+class DragItem extends PureComponent {
+
+  static propTypes = {
+    label: PropTypes.string.isRequired,
+  };
+
+  render() {
+    return this.props.dragSource(
+      <div className="DragItem">
+        {this.props.label}
+      </div>
+    );
+  }
+}
+
+export default DragSource(
+  'foo',
+  {
+    beginDrag() {
+      return {}
+    }
+  },
+  (connect) => ({
+    dragSource: connect.dragSource(),
+  })
+)(DragItem);
diff --git a/examples/mobile-backend/src/DragPreview.css b/examples/mobile-backend/src/DragPreview.css
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+.DragPreview {
+  position: absolute;
+  top: 0;
+  left: 0;
+  height: 100vh;
+  width: 100vw;
+  pointer-events: none;
+  z-index: 1000;
+}
+
+.DragPreview__item {
+  width: 100px;
+  height: 100px;
+  background: white;
+  border: solid 1px black;
+}
diff --git a/examples/mobile-backend/src/DragPreview.js b/examples/mobile-backend/src/DragPreview.js
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+import React, { PureComponent } from 'react';
+import { DragLayer } from 'react-dnd';
+import './DragPreview.css';
+
+class DragPreview extends PureComponent {
+
+  render() {
+    const {
+      item,
+      offset,
+    } = this.props;
+
+    return (
+      <div className="DragPreview">
+        {item && (
+          <div
+            className="DragPreview__item"
+            style={{
+              position: 'absolute',
+              top: offset.y,
+              left: offset.x,
+            }}
+          />
+        )}
+      </div>
+    );
+  }
+}
+
+export default DragLayer(
+  monitor => ({
+    item: monitor.getItem(),
+    offset: monitor.getClientOffset(),
+  })
+)(DragPreview);
diff --git a/examples/mobile-backend/src/index.css b/examples/mobile-backend/src/index.css
@@ -0,0 +1,5 @@
+body {
+  margin: 0;
+  padding: 0;
+  font-family: sans-serif;
+}
diff --git a/examples/mobile-backend/src/index.js b/examples/mobile-backend/src/index.js
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+import React from 'react';
+import ReactDOM from 'react-dom';
+import App from './App';
+import './index.css';
+
+ReactDOM.render(
+  <App />,
+  document.getElementById('root')
+);