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| 1 | +/** |
| 2 | + * Copyright 2013 Facebook, Inc. |
| 3 | + * All rights reserved. |
| 4 | + * |
| 5 | + * This source code is licensed under the BSD-style license found in the |
| 6 | + * LICENSE file in the root directory of this source tree. An additional grant |
| 7 | + * of patent rights can be found in the PATENTS file in the same directory. |
| 8 | + */ |
| 9 | +"use strict"; |
| 10 | + |
| 11 | +var React = require('react'); |
| 12 | +var ReactART = require('react-art'); |
| 13 | +var Group = ReactART.Group; |
| 14 | +var Shape = ReactART.Shape; |
| 15 | +var Surface = ReactART.Surface; |
| 16 | +var Transform = ReactART.Transform; |
| 17 | + |
| 18 | +var MOUSE_UP_DRAG = 0.978; |
| 19 | +var MOUSE_DOWN_DRAG = 0.9; |
| 20 | +var MAX_VEL = 11; |
| 21 | +var CLICK_ACCEL = 3; |
| 22 | +var BASE_VEL = 0.15; |
| 23 | + |
| 24 | +/** |
| 25 | + * An animated SVG component. |
| 26 | + */ |
| 27 | +var VectorWidget = React.createClass({ |
| 28 | + /** |
| 29 | + * Initialize state members. |
| 30 | + */ |
| 31 | + getInitialState: function() { |
| 32 | + return {degrees: 0, velocity: 0, drag: MOUSE_UP_DRAG}; |
| 33 | + }, |
| 34 | + |
| 35 | + /** |
| 36 | + * When the component is mounted into the document - this is similar to a |
| 37 | + * constructor, but invoked when the instance is actually mounted into the |
| 38 | + * document. Here's, we'll just set up an animation loop that invokes our |
| 39 | + * method. Binding of `this.onTick` is not needed because all React methods |
| 40 | + * are automatically bound before being mounted. |
| 41 | + */ |
| 42 | + componentDidMount: function() { |
| 43 | + this._interval = window.setInterval(this.onTick, 20); |
| 44 | + }, |
| 45 | + |
| 46 | + componentWillUnmount: function() { |
| 47 | + window.clearInterval(this._interval); |
| 48 | + }, |
| 49 | + |
| 50 | + onTick: function() { |
| 51 | + var nextDegrees = this.state.degrees + BASE_VEL + this.state.velocity; |
| 52 | + var nextVelocity = this.state.velocity * this.state.drag; |
| 53 | + this.setState({degrees: nextDegrees, velocity: nextVelocity}); |
| 54 | + }, |
| 55 | + |
| 56 | + /** |
| 57 | + * When mousing down, we increase the friction down the velocity. |
| 58 | + */ |
| 59 | + handleMouseDown: function() { |
| 60 | + this.setState({drag: MOUSE_DOWN_DRAG}); |
| 61 | + }, |
| 62 | + |
| 63 | + /** |
| 64 | + * Cause the rotation to "spring". |
| 65 | + */ |
| 66 | + handleMouseUp: function() { |
| 67 | + var nextVelocity = Math.min(this.state.velocity + CLICK_ACCEL, MAX_VEL); |
| 68 | + this.setState({velocity: nextVelocity, drag: MOUSE_UP_DRAG}); |
| 69 | + }, |
| 70 | + |
| 71 | + /** |
| 72 | + * This is the "main" method for any component. The React API allows you to |
| 73 | + * describe the structure of your UI component at *any* point in time. |
| 74 | + */ |
| 75 | + render: function() { |
| 76 | + return ( |
| 77 | + <Surface |
| 78 | + width={700} |
| 79 | + height={700} |
| 80 | + style={{cursor: 'pointer'}}> |
| 81 | + {this.renderGraphic(this.state.degrees)} |
| 82 | + </Surface> |
| 83 | + ); |
| 84 | + }, |
| 85 | + |
| 86 | + /** |
| 87 | + * Better SVG support for React coming soon. |
| 88 | + */ |
| 89 | + renderGraphic: function(rotation) { |
| 90 | + |
| 91 | + return ( |
| 92 | + <Group |
| 93 | + onMouseDown={this.handleMouseDown} |
| 94 | + onMouseUp={this.handleMouseUp}> |
| 95 | + <Group x={210} y={135}> |
| 96 | + <Shape fill="rgba(0,0,0,0.1)" d={BORDER_PATH} /> |
| 97 | + <Shape fill="#7BC7BA" d={BG_PATH} /> |
| 98 | + <Shape fill="#DCDCDC" d={BAR_PATH} /> |
| 99 | + <Shape fill="#D97B76" d={RED_DOT_PATH} /> |
| 100 | + <Shape fill="#DBBB79" d={YELLOW_DOT_PATH} /> |
| 101 | + <Shape fill="#A6BD8A" d={GREEN_DOT_PATH} /> |
| 102 | + <Group x={55} y={29}> |
| 103 | + <Group rotation={rotation} originX={84} originY={89}> |
| 104 | + <Shape fill="#FFFFFF" d={CENTER_DOT_PATH} /> |
| 105 | + <Group> |
| 106 | + <Shape d={RING_ONE_PATH} stroke="#FFFFFF" strokeWidth={8} /> |
| 107 | + <Shape d={RING_TWO_PATH} transform={RING_TWO_ROTATE} stroke="#FFFFFF" strokeWidth={8} /> |
| 108 | + <Shape d={RING_THREE_PATH} transform={RING_THREE_ROTATE} stroke="#FFFFFF" strokeWidth={8} /> |
| 109 | + </Group> |
| 110 | + </Group> |
| 111 | + </Group> |
| 112 | + </Group> |
| 113 | + </Group> |
| 114 | + ); |
| 115 | + } |
| 116 | +}); |
| 117 | + |
| 118 | +var BORDER_PATH = "M3.00191459,4 C1.34400294,4 0,5.34785514 0,7.00550479 L0,220.994495 C0,222.65439 1.34239483,224 3.00191459,224 L276.998085,224 C278.655997,224 280,222.652145 280,220.994495 L280,7.00550479 C280,5.34561033 278.657605,4 276.998085,4 L3.00191459,4 Z M3.00191459,4"; |
| 119 | +var BG_PATH = "M3.00191459,1 C1.34400294,1 0,2.34785514 0,4.00550479 L0,217.994495 C0,219.65439 1.34239483,221 3.00191459,221 L276.998085,221 C278.655997,221 280,219.652145 280,217.994495 L280,4.00550479 C280,2.34561033 278.657605,1 276.998085,1 L3.00191459,1 Z M3.00191459,1"; |
| 120 | +var BAR_PATH = "M3.00191459,0 C1.34400294,0 0,1.34559019 0,3.00878799 L0,21 C0,21 0,21 0,21 L280,21 C280,21 280,21 280,21 L280,3.00878799 C280,1.34708027 278.657605,0 276.998085,0 L3.00191459,0 Z M3.00191459,0"; |
| 121 | +var RED_DOT_PATH = "M12.5,17 C16.0898511,17 19,14.0898511 19,10.5 C19,6.91014895 16.0898511,4 12.5,4 C8.91014895,4 6,6.91014895 6,10.5 C6,14.0898511 8.91014895,17 12.5,17 Z M12.5,17"; |
| 122 | +var YELLOW_DOT_PATH = "M31.5,17 C35.0898511,17 38,14.0898511 38,10.5 C38,6.91014895 35.0898511,4 31.5,4 C27.9101489,4 25,6.91014895 25,10.5 C25,14.0898511 27.9101489,17 31.5,17 Z M31.5,17"; |
| 123 | +var GREEN_DOT_PATH = "M50.5,17 C54.0898511,17 57,14.0898511 57,10.5 C57,6.91014895 54.0898511,4 50.5,4 C46.9101489,4 44,6.91014895 44,10.5 C44,14.0898511 46.9101489,17 50.5,17 Z M50.5,17"; |
| 124 | +var CENTER_DOT_PATH = "M84,105 C92.8365564,105 100,97.8365564 100,89 C100,80.1634436 92.8365564,73 84,73 C75.1634436,73 68,80.1634436 68,89 C68,97.8365564 75.1634436,105 84,105 Z M84,105"; |
| 125 | +var RING_ONE_PATH = "M84,121 C130.391921,121 168,106.673113 168,89 C168,71.3268871 130.391921,57 84,57 C37.6080787,57 0,71.3268871 0,89 C0,106.673113 37.6080787,121 84,121 Z M84,121"; |
| 126 | +var RING_TWO_PATH = "M84,121 C130.391921,121 168,106.673113 168,89 C168,71.3268871 130.391921,57 84,57 C37.6080787,57 0,71.3268871 0,89 C0,106.673113 37.6080787,121 84,121 Z M84,121"; |
| 127 | +var RING_THREE_PATH = "M84,121 C130.391921,121 168,106.673113 168,89 C168,71.3268871 130.391921,57 84,57 C37.6080787,57 0,71.3268871 0,89 C0,106.673113 37.6080787,121 84,121 Z M84,121"; |
| 128 | +var RING_TWO_ROTATE = new Transform().translate(84.000000, 89.000000).rotate(-240.000000).translate(-84.000000, -89.000000); |
| 129 | +var RING_THREE_ROTATE = new Transform().translate(84.000000, 89.000000).rotate(-300.000000).translate(-84.000000, -89.000000); |
| 130 | + |
| 131 | +module.exports = VectorWidget; |
| 132 | + |
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