Add Pointer Events DOM Fixture

Author: philipp-spiess

fixtures/dom/src/components/Header.js

@@ -64,6 +64,7 @@ class Header extends React.Component {
                 <option value="/event-pooling">Event Pooling</option>
                 <option value="/custom-elements">Custom Elements</option>
                 <option value="/media-events">Media Events</option>
+                <option value="/pointer-events">Pointer Events</option>
               </select>
             </label>
             <label htmlFor="react_version">

fixtures/dom/src/components/fixtures/index.js

@@ -11,6 +11,7 @@ import ErrorHandling from './error-handling';
 import EventPooling from './event-pooling';
 import CustomElementFixtures from './custom-elements';
 import MediaEventsFixtures from './media-events';
+import PointerEventsFixtures from './pointer-events';
 
 const React = window.React;
 
@@ -46,6 +47,8 @@ function FixturesPage() {
       return <CustomElementFixtures />;
     case '/media-events':
       return <MediaEventsFixtures />;
+    case '/pointer-events':
+      return <PointerEventsFixtures />;
     default:
       return <p>Please select a test fixture.</p>;
   }

fixtures/dom/src/components/fixtures/pointer-events/drag-box.js

@@ -0,0 +1,90 @@
+const React = window.React;
+
+const CIRCLE_SIZE = 80;
+
+class DragBox extends React.Component {
+  state = {
+    hasCapture: false,
+    circleLeft: 80,
+    circleTop: 80,
+  };
+  isDragging = false;
+  previousLeft = 0;
+  previousTop = 0;
+
+  onDown = event => {
+    this.isDragging = true;
+    event.target.setPointerCapture(event.pointerId);
+
+    // We store the initial coordinates to be able to calculate the changes
+    // later on.
+    this.extractPositionDelta(event);
+  };
+
+  onMove = event => {
+    if (!this.isDragging) {
+      return;
+    }
+    const {left, top} = this.extractPositionDelta(event);
+
+    this.setState(({circleLeft, circleTop}) => ({
+      circleLeft: circleLeft + left,
+      circleTop: circleTop + top,
+    }));
+  };
+
+  onUp = event => (this.isDragging = false);
+  onGotCapture = event => this.setState({hasCapture: true});
+  onLostCapture = event => this.setState({hasCapture: false});
+
+  extractPositionDelta = event => {
+    const left = event.pageX;
+    const top = event.pageY;
+    const delta = {
+      left: left - this.previousLeft,
+      top: top - this.previousTop,
+    };
+    this.previousLeft = left;
+    this.previousTop = top;
+    return delta;
+  };
+
+  render() {
+    const {hasCapture, circleLeft, circleTop} = this.state;
+
+    const boxStyle = {
+      border: '1px solid #d9d9d9',
+      margin: '10px 0 20px',
+      minHeight: 400,
+      width: '100%',
+      position: 'relative',
+    };
+
+    const circleStyle = {
+      width: CIRCLE_SIZE,
+      height: CIRCLE_SIZE,
+      borderRadius: CIRCLE_SIZE / 2,
+      position: 'absolute',
+      left: circleLeft,
+      top: circleTop,
+      backgroundColor: hasCapture ? 'blue' : 'green',
+      touchAction: 'none',
+    };
+
+    return (
+      <div style={boxStyle}>
+        <div
+          style={circleStyle}
+          onPointerDown={this.onDown}
+          onPointerMove={this.onMove}
+          onPointerUp={this.onUp}
+          onPointerCancel={this.onUp}
+          onGotPointerCapture={this.onGotCapture}
+          onLostPointerCapture={this.onLostCapture}
+        />
+      </div>
+    );
+  }
+}
+
+export default DragBox;

fixtures/dom/src/components/fixtures/pointer-events/drag.js

@@ -0,0 +1,25 @@
+import TestCase from '../../TestCase';
+import DragBox from './drag-box';
+
+const React = window.React;
+
+class Drag extends React.Component {
+  render() {
+    return (
+      <TestCase title="Drag" description="">
+        <TestCase.Steps>
+          <li>Drag the circle below with any pointer tool</li>
+        </TestCase.Steps>
+
+        <TestCase.ExpectedResult>
+          While dragging, the circle must have turn blue to indicate that a
+          pointer capture was received.
+        </TestCase.ExpectedResult>
+
+        <DragBox />
+      </TestCase>
+    );
+  }
+}
+
+export default Drag;

fixtures/dom/src/components/fixtures/pointer-events/hover-box.js

@@ -0,0 +1,34 @@
+const React = window.React;
+
+class DrawBox extends React.Component {
+  render() {
+    const boxStyle = {
+      border: '1px solid #d9d9d9',
+      margin: '10px 0 20px',
+      padding: '20px 20px',
+      touchAction: 'none',
+    };
+
+    const obstacleStyle = {
+      border: '1px solid #d9d9d9',
+      width: '25%',
+      height: '200px',
+      margin: '12.5%',
+      display: 'inline-block',
+    };
+
+    return (
+      <div
+        style={boxStyle}
+        onPointerOver={this.props.onOver}
+        onPointerOut={this.props.onOut}
+        onPointerEnter={this.props.onEnter}
+        onPointerLeave={this.props.onLeave}>
+        <div style={obstacleStyle} />
+        <div style={obstacleStyle} />
+      </div>
+    );
+  }
+}
+
+export default DrawBox;

fixtures/dom/src/components/fixtures/pointer-events/hover.js

@@ -0,0 +1,51 @@
+import TestCase from '../../TestCase';
+import HoverBox from './hover-box';
+
+const React = window.React;
+
+class Hover extends React.Component {
+  state = {
+    overs: 0,
+    outs: 0,
+    enters: 0,
+    leaves: 0,
+  };
+
+  onOver = () => this.setState({overs: this.state.overs + 1});
+  onOut = () => this.setState({outs: this.state.outs + 1});
+  onEnter = () => this.setState({enters: this.state.enters + 1});
+  onLeave = () => this.setState({leaves: this.state.leaves + 1});
+
+  render() {
+    const {overs, outs, enters, leaves} = this.state;
+
+    return (
+      <TestCase title="Hover" description="">
+        <TestCase.Steps>
+          <li>Hover over the above box and the obstacles</li>
+        </TestCase.Steps>
+
+        <TestCase.ExpectedResult>
+          Overs and outs should increase when moving over the obstacles but
+          enters and leaves should not.
+        </TestCase.ExpectedResult>
+
+        <HoverBox
+          onOver={this.onOver}
+          onOut={this.onOut}
+          onEnter={this.onEnter}
+          onLeave={this.onLeave}
+        />
+
+        <p>
+          Pointer Overs: <b>{overs}</b> <br />
+          Pointer Outs: <b>{outs}</b> <br />
+          Pointer Enters: <b>{enters}</b> <br />
+          Pointer Leaves: <b>{leaves}</b> <br />
+        </p>
+      </TestCase>
+    );
+  }
+}
+
+export default Hover;

fixtures/dom/src/components/fixtures/pointer-events/index.js

@@ -0,0 +1,20 @@
+import FixtureSet from '../../FixtureSet';
+import Drag from './drag';
+import Hover from './hover';
+
+const React = window.React;
+
+class PointerEvents extends React.Component {
+  render() {
+    return (
+      <FixtureSet
+        title="Pointer Events"
+        description="Pointer Events are not supported in every browser. The examples below might not work in every browser. To test pointer events, make sure to use Google Chrome, Firefox, Internet Explorer, or Edge.">
+        <Drag />
+        <Hover />
+      </FixtureSet>
+    );
+  }
+}
+
+export default PointerEvents;