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| 1 <!-- |
| 2 @license |
| 3 Copyright (c) 2015 The Polymer Project Authors. All rights reserved. |
| 4 This code may only be used under the BSD style license found at http://polymer.g
ithub.io/LICENSE.txt |
| 5 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt |
| 6 The complete set of contributors may be found at http://polymer.github.io/CONTRI
BUTORS.txt |
| 7 Code distributed by Google as part of the polymer project is also |
| 8 subject to an additional IP rights grant found at http://polymer.github.io/PATEN
TS.txt |
| 9 --> |
| 10 |
| 11 <link rel="import" href="../polymer/polymer.html"> |
| 12 <link rel="import" href="../iron-meta/iron-meta.html"> |
| 13 <link rel="import" href="../iron-flex-layout/iron-flex-layout.html"> |
| 14 |
| 15 <!-- |
| 16 |
| 17 The `iron-icon` element displays an icon. By default an icon renders as a 24px s
quare. |
| 18 |
| 19 Example using src: |
| 20 |
| 21 <iron-icon src="star.png"></iron-icon> |
| 22 |
| 23 Example setting size to 32px x 32px: |
| 24 |
| 25 <iron-icon class="big" src="big_star.png"></iron-icon> |
| 26 |
| 27 <style is="custom-style"> |
| 28 .big { |
| 29 --iron-icon-height: 32px; |
| 30 --iron-icon-width: 32px; |
| 31 } |
| 32 </style> |
| 33 |
| 34 The iron elements include several sets of icons. |
| 35 To use the default set of icons, import `iron-icons.html` and use the `icon` at
tribute to specify an icon: |
| 36 |
| 37 <!-- import default iconset and iron-icon --> |
| 38 <link rel="import" href="/components/iron-icons/iron-icons.html"> |
| 39 |
| 40 <iron-icon icon="menu"></iron-icon> |
| 41 |
| 42 To use a different built-in set of icons, import `iron-icons/<iconset>-icons.ht
ml`, and |
| 43 specify the icon as `<iconset>:<icon>`. For example: |
| 44 |
| 45 <!-- import communication iconset and iron-icon --> |
| 46 <link rel="import" href="/components/iron-icons/communication-icons.html"> |
| 47 |
| 48 <iron-icon icon="communication:email"></iron-icon> |
| 49 |
| 50 You can also create custom icon sets of bitmap or SVG icons. |
| 51 |
| 52 Example of using an icon named `cherry` from a custom iconset with the ID `fruit
`: |
| 53 |
| 54 <iron-icon icon="fruit:cherry"></iron-icon> |
| 55 |
| 56 See [iron-iconset](#iron-iconset) and [iron-iconset-svg](#iron-iconset-svg) for
more information about |
| 57 how to create a custom iconset. |
| 58 |
| 59 See [iron-icons](https://elements.polymer-project.org/elements/iron-icons?view=d
emo:demo/index.html) for the default set of icons. |
| 60 |
| 61 |
| 62 ### Styling |
| 63 |
| 64 The following custom properties are available for styling: |
| 65 |
| 66 Custom property | Description | Default |
| 67 ----------------|-------------|---------- |
| 68 `--iron-icon-width` | Width of the icon | `24px` |
| 69 `--iron-icon-height` | Height of the icon | `24px` |
| 70 |
| 71 @group Iron Elements |
| 72 @element iron-icon |
| 73 @demo demo/index.html |
| 74 @hero hero.svg |
| 75 @homepage polymer.github.io |
| 76 --> |
| 77 |
| 78 <dom-module id="iron-icon"> |
| 79 |
| 80 <style> |
| 81 :host { |
| 82 @apply(--layout-inline); |
| 83 @apply(--layout-center-center); |
| 84 position: relative; |
| 85 |
| 86 vertical-align: middle; |
| 87 |
| 88 fill: currentcolor; |
| 89 |
| 90 width: var(--iron-icon-width, 24px); |
| 91 height: var(--iron-icon-height, 24px); |
| 92 } |
| 93 </style> |
| 94 |
| 95 <template> |
| 96 <iron-meta id="meta" type="iconset"></iron-meta> |
| 97 </template> |
| 98 |
| 99 <script> |
| 100 |
| 101 Polymer({ |
| 102 |
| 103 is: 'iron-icon', |
| 104 |
| 105 properties: { |
| 106 |
| 107 /** |
| 108 * The name of the icon to use. The name should be of the form: |
| 109 * `iconset_name:icon_name`. |
| 110 */ |
| 111 icon: { |
| 112 type: String, |
| 113 observer: '_iconChanged' |
| 114 }, |
| 115 |
| 116 /** |
| 117 * The name of the theme to used, if one is specified by the |
| 118 * iconset. |
| 119 */ |
| 120 theme: { |
| 121 type: String, |
| 122 observer: '_updateIcon' |
| 123 }, |
| 124 |
| 125 /** |
| 126 * If using iron-icon without an iconset, you can set the src to be |
| 127 * the URL of an individual icon image file. Note that this will take |
| 128 * precedence over a given icon attribute. |
| 129 */ |
| 130 src: { |
| 131 type: String, |
| 132 observer: '_srcChanged' |
| 133 } |
| 134 }, |
| 135 |
| 136 _DEFAULT_ICONSET: 'icons', |
| 137 |
| 138 _iconChanged: function(icon) { |
| 139 var parts = (icon || '').split(':'); |
| 140 this._iconName = parts.pop(); |
| 141 this._iconsetName = parts.pop() || this._DEFAULT_ICONSET; |
| 142 this._updateIcon(); |
| 143 }, |
| 144 |
| 145 _srcChanged: function(src) { |
| 146 this._updateIcon(); |
| 147 }, |
| 148 |
| 149 _usesIconset: function() { |
| 150 return this.icon || !this.src; |
| 151 }, |
| 152 |
| 153 _updateIcon: function() { |
| 154 if (this._usesIconset()) { |
| 155 if (this._iconsetName) { |
| 156 this._iconset = this.$.meta.byKey(this._iconsetName); |
| 157 if (this._iconset) { |
| 158 this._iconset.applyIcon(this, this._iconName, this.theme); |
| 159 } else { |
| 160 this._warn(this._logf('_updateIcon', 'could not find iconset `' |
| 161 + this._iconsetName + '`, did you import the iconset?')); |
| 162 } |
| 163 } |
| 164 } else { |
| 165 if (!this._img) { |
| 166 this._img = document.createElement('img'); |
| 167 this._img.style.width = '100%'; |
| 168 this._img.style.height = '100%'; |
| 169 } |
| 170 this._img.src = this.src; |
| 171 Polymer.dom(this.root).appendChild(this._img); |
| 172 } |
| 173 } |
| 174 |
| 175 }); |
| 176 |
| 177 </script> |
| 178 |
| 179 </dom-module> |
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