<!-- @license Copyright (c) 2015 The Polymer Project Authors. All rights reserved. This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE The complete set of authors may be found at http://polymer.github.io/AUTHORS The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS Code distributed by Google as part of the polymer project is also subject to an additional IP rights grant found at http://polymer.github.io/PATENTS --> <link rel="import" href="../polymer/polymer.html"> <link rel="import" href="../iron-icon/iron-icon.html"> <link rel="import" href="../iron-flex-layout/iron-flex-layout.html"> <link rel="import" href="../paper-styles/default-theme.html"> <link rel="import" href="../paper-behaviors/paper-button-behavior.html"> <link rel="import" href="../paper-behaviors/paper-inky-focus-behavior.html"> <link rel="import" href="../paper-ripple/paper-ripple.html"> <!-- Material design: [Icon toggles](https://www.google.com/design/spec/components/buttons.html#buttons-toggle-buttons) `paper-icon-button` is a button with an image placed at the center. When the user touches the button, a ripple effect emanates from the center of the button. `paper-icon-button` includes a default icon set. Use `icon` to specify which icon from the icon set to use. <paper-icon-button icon="menu"></paper-icon-button> See [`iron-iconset`](#iron-iconset) for more information about how to use a custom icon set. Example: <link href="path/to/iron-icons/iron-icons.html" rel="import"> <paper-icon-button icon="favorite"></paper-icon-button> <paper-icon-button src="star.png"></paper-icon-button> ### Styling Style the button with CSS as you would a normal DOM element. If you are using the icons provided by `iron-icons`, they will inherit the foreground color of the button. /* make a red "favorite" button */ <paper-icon-button icon="favorite" style="color: red;"></paper-icon-button> By default, the ripple is the same color as the foreground at 25% opacity. You may customize the color using the `--paper-icon-button-ink-color` custom property. The following custom properties and mixins are available for styling: Custom property | Description | Default ----------------|-------------|---------- `--paper-icon-button-disabled-text` | The color of the disabled button | `--disabled-text-color` `--paper-icon-button-ink-color` | Selected/focus ripple color | `--primary-text-color` `--paper-icon-button` | Mixin for a button | `{}` `--paper-icon-button-disabled` | Mixin for a disabled button | `{}` @group Paper Elements @element paper-icon-button @demo demo/index.html --> <dom-module id="paper-icon-button"> <template strip-whitespace> <style> :host { display: inline-block; position: relative; padding: 8px; outline: none; -webkit-tap-highlight-color: rgba(0,0,0,0); -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; cursor: pointer; z-index: 0; line-height: 1; width: 40px; height: 40px; /* Because of polymer/2558, this style has lower specificity than * */ box-sizing: border-box !important; @apply(--paper-icon-button); } :host #ink { color: var(--paper-icon-button-ink-color, --primary-text-color); opacity: 0.6; } :host([disabled]) { color: var(--paper-icon-button-disabled-text, --disabled-text-color); pointer-events: none; cursor: auto; @apply(--paper-icon-button-disabled); } iron-icon { --iron-icon-width: 100%; --iron-icon-height: 100%; } </style> <iron-icon id="icon" src="[[src]]" icon="[[icon]]" alt$="[[alt]]"></iron-icon> </template> <script> Polymer({ is: 'paper-icon-button', hostAttributes: { role: 'button', tabindex: '0' }, behaviors: [ Polymer.PaperInkyFocusBehavior ], properties: { /** * The URL of an image for the icon. If the src property is specified, * the icon property should not be. */ src: { type: String }, /** * Specifies the icon name or index in the set of icons available in * the icon's icon set. If the icon property is specified, * the src property should not be. */ icon: { type: String }, /** * Specifies the alternate text for the button, for accessibility. */ alt: { type: String, observer: "_altChanged" } }, _altChanged: function(newValue, oldValue) { var label = this.getAttribute('aria-label'); // Don't stomp over a user-set aria-label. if (!label || oldValue == label) { this.setAttribute('aria-label', newValue); } } }); </script> </dom-module>