如何通过拖动调整图像大小 [英] How to resize the image by dragging
本文介绍了如何通过拖动调整图像大小的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个图片，需要通过拖动它的角来调整它的大小，angularjs中是否有任何选项？
I have an image and need to resize it by dragging its corners, is there any options in angularjs?
截至目前我正在做手动图像调整大小这样：
As of now I am doing manual image resize like this:
<img src="~/Content/images/login-logo.png" width="{{image.width}}" height="{{image.size}}"/>
<div class="right-wrapper">
<h3 class="right-head">Appearance <img src="~/Content/images/info-icon.png"></h3>
<div ng-if="isImage">
<div ng-class="form-group">
size
<input class="form-control" type="textbox" ng-model="image.size" />
</div>
<div ng-class="form-group">
width
<input class="form-control" type="textbox" ng-model="image.width" />
</div>
</div>
</div>
但是我想通过拖动角来调整它的大小。
But I want to resize it by dragging its corners.
推荐答案
希望这个角度指令有帮助
Hope this angular directive helps
(function () {
'use strict';
angular.module('myApp', [])
.directive('resizable', function () {
return {
restrict: 'A',
scope: {
callback: '&onResize'
},
link: function postLink(scope, elem, attrs) {
elem.resizable({handles: "all"});
elem.on('resize', function (evt, ui) {
scope.$apply(function() {
if (scope.callback) {
scope.callback({$evt: evt, $ui: ui });
}
})
});
}
};
})
.controller('MainCtrl', function ($scope) {
$scope.resize = function(evt,ui) {
//console.log (evt,ui);
$scope.w = ui.size.width;
$scope.h = ui.size.height;
}
});
})();
<head>
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<link rel="stylesheet" href="//code.jquery.com/ui/1.11.2/themes/smoothness/jquery-ui.css">
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<script src="//code.jquery.com/ui/1.11.2/jquery-ui.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.1/angular.min.js"></script>
</head>
<body class="jumbotron" ng-controller="MainCtrl" ng-app="myApp">
<h2>Resizable directive in AngularJS and jQueryUI</h2>
<p>Drag the cursor to resize</p>
<img src="http://dummyimage.com/600x400/fff/000" resizable on-resize="resize($evt, $ui)" width="200" height="200" />
<div ng-show="w">{{w}}:{{h}}px</div>
</body>
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