我已经尝试在$（window）.resize上再次调用下面的指令，并添加范围。$ digest，但该指令没有响应。
我正在尝试将响应宽度和高度（这是scope.viewport和scope.boundary的属性）加载到选项：boundary / viewport width和height - 调整大小。
完成此任务的正确方法是什么？
angular.module('ngCroppie', []).directive('ngCroppie', [
function ($compile) {
return {
restrict: 'AE',
scope:{
src: '=',
viewport: '=',
boundry: '=',
type: '@',
zoom: '@',
mousezoom: '@',
update: '=',
ngModel: '='
},
link: function(scope, elem, attr) {
// defaults
if(scope.viewport == undefined){
scope.viewport = {w: null, h: null}
}
if(scope.boundry == undefined){
scope.boundry = {w: null, h: null}
}
// catches
scope.viewport.w = (scope.viewport.w != undefined) ? scope.viewport.w : 300;
scope.viewport.h = (scope.viewport.h != undefined) ? scope.viewport.h : 300;
scope.boundry.w = (scope.boundry.w != undefined) ? scope.boundry.w : 400;
scope.boundry.h = (scope.boundry.h != undefined) ? scope.boundry.h : 400;
// viewport cannot be larger than the boundaries
if(scope.viewport.w > scope.boundry.w){ scope.viewport.w = scope.boundry.w }
if(scope.viewport.h > scope.boundry.h){ scope.viewport.h = scope.boundry.h }
// convert string to Boolean
var zoom = (scope.zoom === "true"),
mouseZoom = (scope.mousezoom === "true");
// define options
var options = {
viewport: {
width: scope.viewport.w,
height: scope.viewport.h,
type: scope.type || 'square'
},
boundary: {
width: scope.boundry.w,
height: scope.boundry.h
},
showZoom: zoom,
mouseWheelZoom: mouseZoom,
}
if (scope.update != undefined){
options.update = scope.update
}
// create new croppie and settime for updates
var c = new Croppie(elem[0], options);
var intervalID = window.setInterval(function(){
c.result('canvas').then(function(img){
scope.$apply(function(){
scope.ngModel = img
})
})
}, 250);
scope.$on("$destroy",
function( event ) {
clearInterval(intervalID);
}
);
// respond to changes in src
scope.$watch('src', function(newValue, oldValue) {
if(scope.src != undefined){
c.bind(scope.src);
c.result('canvas').then(function(img){
scope.$apply(function(){
scope.ngModel = img
})
})
}
})
}
};
}
]);
这是我更新的代码。现在，我的问题是它不断制作一个新的图像（正确调整大小）。我无法弄清楚如何删除需要替换的初始图像：
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e=t.points,n=document.createElement("div"),r=document.createElement("img"),o=e[2]-e[0],i=e[3]-e[1];return n.classList.add("croppie-result"),n.appendChild(r),s(r,{left:-1*e[0]+"px",top:-1*e[1]+"px"}),r.src=t.url,s(n,{width:o+"px",height:i+"px"}),n}function u(t,e){var n=e.points,r=n[0],o=n[1],i=n[2]-n[0],s=n[3]-n[1],a=e.circle,u=document.createElement("canvas"),l=u.getContext("2d"),c=i,p=s;return e.outputWidth&&e.outputHeight&&(c=e.outputWidth,p=e.outputHeight),u.width=c,u.height=p,a&&(l.save(),l.beginPath(),l.arc(c/2,p/2,c/2,0,2*Math.PI,!0),l.closePath(),l.clip()),l.drawImage(t,r,o,i,s,0,0,c,p),u.toDataURL()}function l(t,e){var n,r=e||new Image;return n=new Promise(function(t,e){r.setAttribute("crossOrigin","anonymous"),r.onload=function(){setTimeout(function(){t(r)},1)}}),r.src=t,n}function c(){var 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l={};l[B]=n.toString(),l[M]=o.toString(),s(e.elements.img,l),O.call(e),y.call(e)}function f(t){var e=this,n=e._currentZoom,r=t.width,o=t.height,i=e.options.boundary.width/2,s=e.options.boundary.height/2,a=e._originalImageWidth,u=e._originalImageHeight,l=a*n,c=u*n,p=r/2,m=o/2,d=-1*(p/n-i),f=d-(l*(1/n)-r*(1/n)),h=-1*(m/n-s),g=h-(c*(1/n)-o*(1/n)),v=1/n*p,y=l*(1/n)-v,w=1/n*m,_=c*(1/n)-w;return{translate:{maxX:d,minX:f,maxY:h,minY:g},origin:{maxX:y,minX:v,maxY:_,minY:w}}}function h(){var t=this,e=t._currentZoom,n=t.elements.img.getBoundingClientRect(),r=t.elements.viewport.getBoundingClientRect(),o=F.parse(t.elements.img.style[B]),i=new I(t.elements.img),a=r.top-n.top+r.height/2,u=r.left-n.left+r.width/2,l={},c={};l.y=a/e,l.x=u/e,c.y=(l.y-i.y)*(1-e),c.x=(l.x-i.x)*(1-e),o.x-=c.x,o.y-=c.y;var p={};p[M]=l.x+"px "+l.y+"px",p[B]=o.toString(),s(t.elements.img,p)}function g(){function 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I,y=w.call(a);y&&!a.data.bound&&(a.data.bound=!0,m[B]=h.toString(),m[M]=g.toString(),s(d,m),t=d.getBoundingClientRect(),e=a.elements.viewport.getBoundingClientRect(),n=a.elements.boundary.getBoundingClientRect(),a._originalImageWidth=t.width,a._originalImageHeight=t.height,a.options.showZoom&&(r=e.width/t.width,o=e.height/t.height,u=Math.max(r,o),u>=l&&(l=u+1),f.min=E(u),f.max=E(l),c=Math.max(n.width/t.width,n.height/t.height),p.call(a,c),i(f)),a._currentZoom=h.scale=c,m[B]=h.toString(),s(d,m),a.data.points.length?x.call(a,a.data.points):b.call(a),v.call(a))}function x(t){if(4!=t.length)throw"Croppie - Invalid number of points supplied: "+t;var e=this,n=t[2]-t[0],r=e.elements.viewport.getBoundingClientRect(),o=e.elements.boundary.getBoundingClientRect(),i={left:r.left-o.left,top:r.top-o.top},a=r.width/n,u=t[1],l=t[0],c=-1*t[1]+i.top,m=-1*t[0]+i.left,d={};d[M]=l+"px "+u+"px",d[B]=new F(m,c,a).toString(),s(e.elements.img,d),p.call(e,a),e._currentZoom=a}function b(){var 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ot=B,it=Z,st=X,at=j,ut=0,lt=F;F.all=ot,F.race=it,F.resolve=st,F.reject=at,F._setScheduler=r,F._setAsap=o,F._asap=k,F.prototype={constructor:F,then:function(t,e){var n=this,r=n._state;if(r===$&&!t||r===tt&&!e)return this;var o=new this.constructor(m),i=n._result;if(r){var s=arguments[r-1];k(function(){R(r,o,s,i)})}else E(n,o,t,e);return o},"catch":function(t){return this.then(null,t)}};var ct=I,pt={Promise:lt,polyfill:ct};"function"==typeof define&&define.amd?define(function(){return pt}):"undefined"!=typeof module&&module.exports?module.exports=pt:"undefined"!=typeof this&&(this.ES6Promise=pt),ct()}.call(this);var M,B,Z,X=["Webkit","Moz","ms"],j=document.createElement("div").style;B=n("transform"),M=n("transformOrigin"),Z=n("userSelect");var P="translate3d",z=", 0px",F=function(t,e,n){this.x=parseFloat(t),this.y=parseFloat(e),this.scale=parseFloat(n)};F.parse=function(t){return t.style?F.parse(t.style[B]):t.indexOf("matrix")>-1||t.indexOf("none")>-1?F.fromMatrix(t):F.fromString(t)},F.fromMatrix=function(t){var e=t.substring(7).split(",");return e.length&&"none"!==t||(e=[1,0,0,1,0,0]),new F(parseInt(e[4],10),parseInt(e[5],10),parseFloat(e[0]))},F.fromString=function(t){var e=t.split(") "),n=e[0].substring(P.length+1).split(","),r=e.length>1?e[1].substring(6):1,o=n.length>1?n[0]:0,i=n.length>1?n[1]:0;return new F(o,i,r)},F.prototype.toString=function(){return P+"("+this.x+"px, "+this.y+"px"+z+") scale("+this.scale+")"};var I=function(t){if(!t||!t.style[M])return this.x=0,void(this.y=0);var e=t.style[M].split(" ");this.x=parseFloat(e[0]),this.y=parseFloat(e[1])};I.prototype.toString=function(){return this.x+"px "+this.y+"px"};var O=o(v,500);if(this.jQuery){var T=this.jQuery;T.fn.croppie=function(t){var e=typeof t;if("string"===e){var n=Array.prototype.slice.call(arguments,1),r=T(this).data("croppie");return"get"===t?r.get():"result"===t?r.result.apply(r,n):this.each(function(){var e=T(this).data("croppie");if(e){var r=e[t];if(!T.isFunction(r))throw"Croppie "+t+" method not found";r.apply(e,n),"destroy"===t&&T(this).removeData("croppie")}})}return this.each(function(){var e=new Y(this,t);T(this).data("croppie",e)})}}Y.defaults={viewport:{width:100,height:100,type:"square"},boundary:{width:300,height:300},customClass:"",showZoom:!0,mouseWheelZoom:!0,update:function(){}},r(Y.prototype,{bind:function(t,e){return C.call(this,t,e)},get:function(){return L.call(this)},result:function(t){return S.call(this,t)},refresh:function(){return A.call(this)},destroy:function(){return R.call(this)}}),t.Croppie=window.Croppie=Y})};
croppieJs();
/*************************
* acrCroppie
* Allen Royston
* Version: 1.0.0
* Updated 4/12/2016
*************************/
angular.module('ngCroppie', []).directive('ngCroppie', [
function ($compile, $window) {
return {
restrict: 'AE',
scope:{
src: '=',
viewport: '=',
boundry: '=',
type: '@',
zoom: '@',
mousezoom: '@',
responsive: '@',
update: '=',
metric: '@',
ngModel: '='
},
link: function(scope, elem, attr) {
// defaults
if(scope.viewport == undefined){
scope.viewport = {w: null, h: null}
}
if(scope.boundry == undefined){
scope.boundry = {w: null, h: null}
}
// catches
scope.viewport.w = (scope.viewport.w != undefined) ? scope.viewport.w : 300;
scope.viewport.h = (scope.viewport.h != undefined) ? scope.viewport.h : 300;
scope.boundry.w = (scope.boundry.w != undefined) ? scope.boundry.w : 400;
scope.boundry.h = (scope.boundry.h != undefined) ? scope.boundry.h : 400;
// viewport cannot be larger than the boundaries
if(scope.viewport.w > scope.boundry.w){ scope.viewport.w = scope.boundry.w }
if(scope.viewport.h > scope.boundry.h){ scope.viewport.h = scope.boundry.h }
// convert string to Boolean
var zoom = (scope.zoom === "true"),
mouseZoom = (scope.mousezoom === "true");
// define options
var options = {
viewport: {
width: scope.viewport.w,
height: scope.viewport.h,
type: scope.type || 'square'
},
boundary: {
width: scope.boundry.w,
height: scope.boundry.h
},
metric: scope.metric,
showZoom: zoom,
mouseWheelZoom: mouseZoom,
}
function init(){
if (scope.update != undefined){
options.update = scope.update
}
console.log('scope: ', scope)
// create new croppie and settime for updates
var c = new Croppie(elem[0], options);
var intervalID = window.setInterval(function(){
c.result('canvas').then(function(img){
scope.$apply(function(){
scope.ngModel = img
})
})
}, 250);
console.log('ccc : ', c)
scope.$on("$destroy",
function( event ) {
clearInterval(intervalID);
$(window).off('resize', function(){
responsive()});
}
);
// respond to changes in src
scope.$watch('src', function(newValue, oldValue) {
if(scope.src != undefined){
c.bind(scope.src);
c.result('canvas').then(function(img){
scope.$apply(function(){
scope.ngModel = img
})
})
}
})
};
if(scope.responsive === 'true'){
function responsive(){
console.log('responsive')
// defaults
if(scope.viewport == undefined){
scope.viewport = {w: null, h: null}
}
if(scope.boundry == undefined){
scope.boundry = {w: null, h: null}
}
// convert string to Boolean
var zoom = (scope.zoom === "true"),
mouseZoom = (scope.mousezoom === "true");
scope.width = $('.modal-md form').width()
scope.height = scope.width * .264;
console.log('width : ', scope.width);
// define options
options = {
viewport: {
width: scope.width,
height: scope.height,
type: scope.type || 'square'
},
boundary: {
width: scope.width,
height: scope.height
},
metric: scope.metric,
showZoom: zoom,
mouseWheelZoom: mouseZoom,
}
init();
};
responsive();
$(window).on('resize', function(){
scope.$digest(function(){
delete scope.$$watchers[0];
scope.$$watchersCount = scope.$$watchers.length;
});
responsive();
clearInterval();
console.log('ccc : ', c)
});
}
else{
init();
}
}
};
}
]);
答案 0 :(得分：0)
您是否尝试在链接功能中收听调整大小事件？
link: function(scope, element, attrs) {
scope.doSomething = function() {
//example of accessing element's attribute
var width = $(element).width();
};
$window.addEventListener("resize", scope.doSomenthing);
}
答案 1 :(得分：0)
我认为你只需要将你的指令的所有链接部分放在一个函数中，连同你需要重新启动的变量并将它们放在一个函数中并在window.resize事件上调用该函数，让我展示一下你
angular.module('ngCroppie',[]).directive('ngCroppie','$document','$log', [
function ($compile) {
return {
restrict: 'AE',
scope:{
src: '=',
viewport: '=',
boundry: '=',
type: '@',
zoom: '@',
mousezoom: '@',
update: '=',
ngModel: '='
},
link: function(scope, elem, attr) {
function init()={
// defaults
if(scope.viewport == undefined){
scope.viewport = {w: null, h: null}
}
if(scope.boundry == undefined){
scope.boundry = {w: null, h: null}
}
// catches
scope.viewport.w = (scope.viewport.w != undefined) ? scope.viewport.w : 300;
scope.viewport.h = (scope.viewport.h != undefined) ? scope.viewport.h : 300;
scope.boundry.w = (scope.boundry.w != undefined) ? scope.boundry.w : 400;
scope.boundry.h = (scope.boundry.h != undefined) ? scope.boundry.h : 400;
// viewport cannot be larger than the boundaries
if(scope.viewport.w > scope.boundry.w){ scope.viewport.w = scope.boundry.w }
if(scope.viewport.h > scope.boundry.h){ scope.viewport.h = scope.boundry.h }
// convert string to Boolean
var zoom = (scope.zoom === "true"),
mouseZoom = (scope.mousezoom === "true");
// define options
var options = {
viewport: {
width: scope.viewport.w,
height: scope.viewport.h,
type: scope.type || 'square'
},
boundary: {
width: scope.boundry.w,
height: scope.boundry.h
},
showZoom: zoom,
mouseWheelZoom: mouseZoom,
}
if (scope.update != undefined){
options.update = scope.update
}
// create new croppie and settime for updates
var c = new Croppie(elem[0], options);
}
init();
//window resizing event
$document.bind('click', function(event) {
$log.info(event);
init()://intiating the variables again
});
var intervalID = window.setInterval(function(){
c.result('canvas').then(function(img){
scope.$apply(function(){
scope.ngModel = img
})
})
}, 250);
scope.$on("$destroy",
function( event ) {
clearInterval(intervalID);
}
);
// respond to changes in src
scope.$watch('src', function(newValue, oldValue) {
if(scope.src != undefined){
c.bind(scope.src);
c.result('canvas').then(function(img){
scope.$apply(function(){
scope.ngModel = img
})
})
}
})
}
};
}
]);
尝试一下！
PS：当你破坏指令范围时取消绑定resize事件，这可以很容易地完成我想