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Thursday, February 9, 2017

Angular Material - Icons

The md-icon an Angular directive, is a component to show vector-based icons in application. It supports icon fonts and SVG icons also apart from using Google Material Icons.

Attributes

S.N.Parameter & Description
1* md-font-icon
String name of CSS icon associated with the font-face will be used to render the icon. Requires the fonts and the named CSS styles to be preloaded.
2* md-font-set
CSS style name associated with the font library; which will be assigned as the class for the font-icon ligature. This value may also be an alias that is used to lookup the classname; internally use $mdIconProvider.fontSet(<alias>) to determine the style name.
3* md-svg-src
String URL (or expression) used to load, cache, and display an external SVG.
4* md-svg-icon
md-svg-icon String name used for lookup of the icon from the internal cache; interpolated strings or expressions may also be used. Specific set names can be used with the syntax <set name>:<icon name>. To use icon sets, developers are required to pre-register the sets using the $mdIconProvider service.
5aria-label
Labels icon for accessibility. If an empty string is provided, icon will be hidden from accessibility layer with aria-hidden="true". If there's no aria-label on the icon nor a label on the parent element, a warning will be logged to the console.
6alt
Labels icon for accessibility. If an empty string is provided, icon will be hidden from accessibility layer with aria-hidden="true". If there's no alt on the icon nor a label on the parent element, a warning will be logged to the console.

Example

The following example showcases the use of md-icons directive to showcase uses of icons.
am_icons.htm
<html lang="en" >
   <head>
      <link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/angular_material/1.0.0/angular-material.min.css">
      <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
      <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular-animate.min.js"></script>
      <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular-aria.min.js"></script>
      <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular-messages.min.js"></script>
      <script src="https://ajax.googleapis.com/ajax/libs/angular_material/1.0.0/angular-material.min.js"></script>
   <link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
   <style>
         .iconDemo .glyph {
            border-bottom: 1px dotted #ccc;
            padding: 10px 0 20px;
            margin-bottom: 20px; 
         }
         .iconDemo .preview-glyphs {
            display: flex;
            flex-direction: row; 
         } 
         .iconDemo .step {
            flex-grow: 1;
            line-height: 0.5; 
         }  
         .iconDemo .material-icons.md-18 {
            font-size: 18px; 
         }
         .iconDemo .material-icons.md-24 {
            font-size: 24px; 
         }
         .iconDemo .material-icons.md-36 {
            font-size: 36px; 
         }
         .iconDemo .material-icons.md-48 {
            font-size: 48px; 
         }
         .iconDemo .material-icons.md-dark {
            color: rgba(0, 0, 0, 0.54); 
         }
         .iconDemo .material-icons.md-dark.md-inactive {
            color: rgba(0, 0, 0, 0.26); 
         }
         .iconDemo .material-icons.md-light {
            color: white; 
         }
         .iconDemo .material-icons.md-light.md-inactive {
            color: rgba(255, 255, 255, 0.3); 
         }
      </style>
      <script language="javascript">
         angular
            .module('firstApplication', ['ngMaterial'])
            .controller('iconController', iconController);

         function iconController ($scope) {
            var iconData = [
               {name: 'accessibility'  , color: "#777" },
               {name: 'question_answer', color: "rgb(89, 226, 168)" },
               {name: 'backup'         , color: "#A00" },
               {name: 'email'          , color: "#00A" }
            ];
            $scope.fonts = [].concat(iconData);            
            $scope.sizes = [
               {size:"md-18",padding:0},
               {size:"md-24",padding:2},
               {size:"md-36",padding:6},
               {size:"md-48",padding:10}
            ];
         }                 
      </script>        
   </head>
   <body ng-app="firstApplication"> 
      <div id="iconContainer" class="iconDemo" ng-controller="iconController as ctrl" ng-cloak>
         <div class="glyph" ng-repeat="font in fonts" layout="row">
            <div ng-repeat="it in sizes" flex layout-align="center center" style="text-align: center;" layout="column">
            <div flex></div>
               <div class="preview-glyphs">
                  <md-icon ng-style="{color: font.color}"
                     aria-label="{{ font.name }}"
                     class="material-icons step"
                     ng-class="it.size">
                     {{ font.name }}
                  </md-icon>
               </div>
            </div>
         </div>
      </div>
   </body>
</html>

Result

Verify the result.
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