Tips for saving an image that has been dragged onto the browser locally

I recently started working with Angular and decided to use the angular-file-upload project from GitHub here. I'm currently in the process of setting up the backend for my application, but I'd like to be able to display dropped files locally in the browser. Is there a way to achieve this?

This is what my view code looks like:

<div ng-controller="MyCtrl">
  <input type="file" ng-file-select="onFileSelect($files)">
  <div class="button" ng-file-select="onFileSelect($files)" data-multiple="true"></div>
  <div id="image_drop_box" ng-file-drop="onFileSelect($files)" 
    ng-file-drag-over-class="optional-css-class-name-or-function" 
    ng-show="dropSupported">drop files here</div>
  <div ng-file-drop-available="dropSupported=true" ng-show="!dropSupported">HTML5 Drop File is not supported!</div>
  <button ng-click="upload.abort()">Cancel Upload</button>
</div>

And the logic implemented in the controller is as follows:

.controller('MyCtrl', function($scope){
  $scope.onFileSelect = function($files) {
    //$files: an array of files selected, each file has name, size, and type.
    for (var i = 0; i < $files.length; i++) {
      var file = $files[i];
      $scope.upload = $upload.upload({
        //upload logic 
      });
    }
  };
});

Answer №1

To convert an image into Base64 code, first encode the image and then insert the Base64 code into the src attribute of the image tag.
In Angular, it is recommended to use the angular-base64 library available at [https://github.com/ninjatronic/angular-base64].

After following the instructions for using this library, you can simply execute the following code:

var imageData = $base64.encode(image);

Don't forget to inject the 'base64' module into your application:

.module('myApp', ['base64'])

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