angular-imgcache-preloader.js
Simple imgcache.js wrapper and image preloader for AngularJS, can be user with Ionic/Cordova/Phonegap.
Installation
Install via bower
bower install --save angular-imgcache-preloader.jsLink library and dependencies
<script src="bower_components/angular/angular.js"></script>
<script src="bower_components/imgcache.js/js/imgcache.js"></script>
<script src="bower_components/angular-imgcache-preloader.js/angular-imgcache-preloader.js"></script>Load module
angular.module('MyApp', [
'ImgCache'
])Usage
Configuration
You can override imgcache.js default options in Angulars config section.
.config(function(..., ImgCacheProvider) {
// set single options
ImgCacheProvider.setOption('debug', true);
ImgCacheProvider.setOption('usePersistentCache', true);
// or more options at once
ImgCacheProvider.setOptions({
debug: true,
usePersistentCache: true
});
// ImgCache library is initialized automatically,
// but set this option if you are using platform like Ionic -
// in this case we need init imgcache.js manually after device is ready
ImgCacheProvider.manualInit = true;
...
});If you are using platform like Ionic, you have to init ImgCache manually.
Note: you must set ImgCacheProvider.manualInit = true; as in example above.
.run(function($ionicPlatform, ImgCache) {
$ionicPlatform.ready(function() {
ImgCache.$init();
});
});You can init library manually in other patforms via "deviceready" callback like this:
<body onload="onLoad()">function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
function onDeviceReady() {
ImgCache.$init();
}(Thx @emps for this note in #1)
Service
Access imgcache.js and its original methods in your components via promise to make sure that imgcache.js library is already initialized
.controller('MyCtrl', function($scope, ImgCache) {
ImgCache.$promise.then(function() {
ImgCache.cacheFile('...');
});
});Directive
Angular-imgcache.js comes with directive, which first looks into cache for an image. If not present, it downloads image, then stores in cache and uses it.
We can set src of an image with ic-src attribute.
<img img-cache ic-src="{{imgUrl}}" />Or set elements background-image with ic-bg attribute.
<div img-cache ic-bg="{{imgUrl}}" ></div>We can set default image for preloading with ic-default attribute.
<div img-cache ic-src="{{imgUrl}}" ic-default="img/backrounds/default.jpg"></div>
