Last active
July 4, 2019 12:02
-
-
Save thachnuida/2f76fe3aaa15dbd1dfa3 to your computer and use it in GitHub Desktop.
Angularjs Directive to rotate image base on EXIF orientation value
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* global EXIF */ | |
'use strict'; | |
// Require library: https://github.com/jseidelin/exif-js | |
// Require Jquery (If not have jquery you must handle DOM by native js code) | |
/** | |
@description this directive auto rotate image by css base on image orientation value | |
Check the example of image orientation here: | |
https://github.com/recurser/exif-orientation-examples | |
@example | |
<div class="modal-upload-file-thumbnail" ng-if="isOneImageFile"> | |
<img ng-src="{{thumbnail}}" img-orientation/> | |
</div> | |
**/ | |
angular.module('app').directive('imgOrientation', function(){ | |
return { | |
restrict: 'A', | |
link: function(scope, element/*, attrs*/) { | |
function setTransform(transform) { | |
element.css('-ms-transform', transform); | |
element.css('-webkit-transform', transform); | |
element.css('-moz-transform', transform); | |
element.css('transform', transform); | |
} | |
var parent = element.parent(); | |
$(element).bind('load', function() { | |
EXIF.getData(element[0], function() { | |
var orientation = EXIF.getTag(element[0], 'Orientation'); | |
var height = element.height(); | |
var width = element.width(); | |
if (orientation && orientation !== 1) { | |
switch (orientation) { | |
case 2: | |
setTransform('rotateY(180deg)'); | |
break; | |
case 3: | |
setTransform('rotate(180deg)'); | |
break; | |
case 4: | |
setTransform('rotateX(180deg)'); | |
break; | |
case 5: | |
setTransform('rotateZ(90deg) rotateX(180deg)'); | |
if (width > height) { | |
parent.css('height', width + 'px'); | |
element.css('margin-top', ((width -height) / 2) + 'px'); | |
} | |
break; | |
case 6: | |
setTransform('rotate(90deg)'); | |
if (width > height) { | |
parent.css('height', width + 'px'); | |
element.css('margin-top', ((width -height) / 2) + 'px'); | |
} | |
break; | |
case 7: | |
setTransform('rotateZ(90deg) rotateY(180deg)'); | |
if (width > height) { | |
parent.css('height', width + 'px'); | |
element.css('margin-top', ((width -height) / 2) + 'px'); | |
} | |
break; | |
case 8: | |
setTransform('rotate(-90deg)'); | |
if (width > height) { | |
parent.css('height', width + 'px'); | |
element.css('margin-top', ((width -height) / 2) + 'px'); | |
} | |
break; | |
} | |
} | |
}); | |
}); | |
} | |
}; | |
}); | |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Angular newbie here. Could you write up a jsfiddle to demo this? Thanks!