mirror of https://github.com/watcha-fr/synapse
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/* |
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Copyright 2014 matrix.org |
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Licensed under the Apache License, Version 2.0 (the "License"); |
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you may not use this file except in compliance with the License. |
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You may obtain a copy of the License at |
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software |
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distributed under the License is distributed on an "AS IS" BASIS, |
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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See the License for the specific language governing permissions and |
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limitations under the License. |
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*/ |
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'use strict'; |
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/* |
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* This service contains multipurpose helper functions. |
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*/ |
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angular.module('mUtilities', []) |
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.service('mUtilities', ['$q', function ($q) { |
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/* |
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* Gets the size of an image |
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* @param {File} imageFile the file containing the image |
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* @returns {promise} A promise that will be resolved by an object with 2 members: |
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* width & height |
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*/ |
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this.getImageSize = function(imageFile) { |
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var deferred = $q.defer(); |
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// Load the file into an html element
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var img = document.createElement("img"); |
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var reader = new FileReader();
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reader.onload = function(e) {
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img.src = e.target.result; |
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// Once ready, returns its size
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deferred.resolve({ |
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width: img.width, |
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height: img.height |
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}); |
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}; |
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reader.onerror = function(e) { |
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deferred.reject(e); |
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}; |
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reader.readAsDataURL(imageFile); |
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return deferred.promise; |
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}; |
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}]); |
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