Javascript 如何用动态图像在camanJs画布中产生效果?
我正在开发mean stack应用程序。Javascript 如何用动态图像在camanJs画布中产生效果?,javascript,angularjs,canvas,camanjs,Javascript,Angularjs,Canvas,Camanjs,我正在开发mean stack应用程序。 我被困在照片编辑器中。 我使用“Camanjs”使照片生效,并在angularjs 1中编辑它。 它将很好地与第一个图像的滑块,但如果我选择任何其他图像形式的滑块编辑后,第一个图像,然后它显示旧的图像 我的文件(angularjs中的指令) ->如果我对“this.revert(false);“line and uncomment”this.reloadCanvasData();“line form”scope.applyImageParameters”
我被困在照片编辑器中。
我使用“Camanjs”使照片生效,并在angularjs 1中编辑它。 它将很好地与第一个图像的滑块,但如果我选择任何其他图像形式的滑块编辑后,第一个图像,然后它显示旧的图像 我的文件(angularjs中的指令) ->如果我对“this.revert(false);“line and uncomment”this.reloadCanvasData();“line form”scope.applyImageParameters”函数进行注释,那么它工作得很好,但在色调0、对比度0等情况下不起作用 ->如果我对“this.reloadCanvasData();“line and uncomment”this.revert(false);“line form”scope.applyImageParameters”函数进行注释,则效果非常好,但它显示的是旧图像,而不是具有效果的当前图像 图像附加两个屏幕排序以获取更多详细信息
有人能帮我解决这个问题吗?你应该移除画布,然后再次创建画布
.directive('hzPhotoEditor', ['$timeout', function($timeout) {
return {
restrict: "E",
link: function(scope, elem, attrs) {
var imgCanvas, $save;
//init photo when click on real photo
scope.$on("fillCanvas", function(event, data) {
console.log("fill canvas called");
console.log(data.photo);
scope.fillCanvas(data);
});
scope.fillCanvas = function(data) {
var hzMIW = 0,
hzMIH = 0,
hzImgH = 0,
hzImgW = 0,
path = '',
c, c1, ctx, ctx1;
angular.element(".hz-photo-editor-wrapper").attr("style", angular.element(".hz-modal-wrapper").attr("style"));
angular.element(".hz-photo-editor-wrapper .hz-left").attr("style", angular.element(".hz-modal-wrapper .hz-left").attr("style"));
angular.element(".hz-photo-editor-wrapper .hz-modal-image-wrapper").attr("style", angular.element(".hz-modal-wrapper .hz-modal-image-wrapper").attr("style"));
angular.element(".hz-photo-editor-wrapper .hz-modal-image").attr("style", angular.element(".hz-modal-wrapper .hz-modal-image").attr("style"));
angular.element(".hz-photo-editor-wrapper .hz-photo-editor-img").attr("height", angular.element(".hz-modal-slider-image").height());
angular.element(".hz-photo-editor-wrapper .hz-photo-editor-img").attr("width", angular.element(".hz-modal-slider-image").width());
hzMIW = angular.element(".hz-modal-wrapper .hz-modal-image").css("width").replace("px", "");
hzMIH = angular.element(".hz-modal-wrapper .hz-modal-image").css("height").replace("px", "");
hzImgH = angular.element(".hz-modal-wrapper .hz-modal-image img").css('height').replace("px", "");
hzImgW = angular.element(".hz-modal-wrapper .hz-modal-image img").css('width').replace("px", "");
$(".hz-modal-image").children("canvas").remove();
var canvas_ = $("<canvas></canvas>").attr({id: 'photoEditorCanvas'});
$(".hz-modal-image").append(canvas_);
c = document.getElementById('photoEditorCanvas');
c.width = hzImgW;
c.height = hzImgH;
ctx = c.getContext('2d');
imgCanvas = new Image();
imgCanvas.src = path;
console.log("imgCanvas.src");
console.log(imgCanvas.src);
if (imgCanvas !== imgCanvas) {
console.log("canvas is load.....");
}
angular.element('input[type=range]').val(0);
imgCanvas.addEventListener('load', function() {
/*ctx.clearRect(0, 0, 0, 0);*/
console.log(imgCanvas);
ctx.drawImage(imgCanvas, 0, 0, hzImgW, hzImgH);
}, false);
};
//give effect by slider like hue, contrast, sepia
scope.applyImageParameters = function() {
var hue, cntrst, vibr, sep;
hue = parseInt(angular.element('#hue').val());
cntrst = parseInt(angular.element('#contrast').val());
vibr = parseInt(angular.element('#vibrance').val());
sep = parseInt(angular.element('#sepia').val());
Caman('#photoEditorCanvas', imgCanvas, function() {
this.revert(false);
//this.reloadCanvasData();
this.hue(hue).contrast(cntrst).vibrance(vibr).sepia(sep).render();
});
};
angular.element("input[type=range]").change("mouseup", function(e) {
scope.applyImageParameters();
console.log("event type: " + e.type);
var min = e.target.min,
max = e.target.max,
val = e.target.value;
angular.element(e.target).css({
'backgroundSize': (val - min) * 100 / (max - min) + '% 100%'
});
//scope.reloadCanvasData();
});
}
};
}])
.directive('hzPhotoEditor',['$timeout',函数($timeout){
返回{
限制:“E”,
链接:功能(范围、要素、属性){
var imgCanvas,$save;
//单击真实照片时初始化照片
作用域:$on(“填充画布”,函数(事件、数据){
log(“填充画布”);
console.log(data.photo);
范围.填充画布(数据);
});
scope.fillCanvas=函数(数据){
var hzMIW=0,
hzMIH=0,
hzImgH=0,
hzImgW=0,
路径=“”,
c、 c1,ctx,ctx1;
angular.element(“.hz照片编辑器包装”).attr(“样式”,angular.element(.hz模态包装”).attr(“样式”);
angular.element(“.hz photo editor wrapper.hz left”).attr(“style”);angular.element(“.hz modal wrapper.hz left”).attr(“style”);
angular.element(“.hz photo editor wrapper.hz modal image wrapper”).attr(“style”)、angular.element(“.hz modal wrapper.hz modal image wrapper”).attr(“style”);
angular.element(“.hz photo editor wrapper.hz modal image”).attr(“style”)、angular.element(“.hz modal wrapper.hz modal image”).attr(“style”);
angular.element(“.hz photo editor wrapper.hz photo editor img”).attr(“height”,angular.element(“.hz model slider image”).height());
angular.element(“.hz photo editor wrapper.hz photo editor img”).attr(“width”,angular.element(“.hz model slider image”).width());
hzMIW=angular.element(“.hz modal wrapper.hz modal image”).css(“宽度”).replace(“px”,“px”);
hzMIH=angular.element(“.hz modal wrapper.hz modal image”).css(“高度”).replace(“px”,“高度”);
hzImgH=angular.element(“.hz modal wrapper.hz modal image img”).css('height')。替换(“px”,”);
hzImgW=angular.element(“.hz modal wrapper.hz modal image img”).css('width')。替换(“px”,”);
$(“.hz模态图像”).children(“画布”).remove();
var canvas=$(“”).attr({id:'photoEditorCanvas'});
$(“.hz模态图像”).append(画布);
c=document.getElementById('photoEditorCanvas');
c、 宽度=HZIGW;
c、 高度=HZIGH;
ctx=c.getContext('2d');
imgCanvas=新图像();
imgCanvas.src=路径;
console.log(“imgCanvas.src”);
console.log(imgCanvas.src);
如果(imgCanvas!==imgCanvas){
log(“画布是加载…”);
}
角度.element('input[type=range]').val(0);
imgCanvas.addEventListener('load',function()){
/*clearRect(0,0,0,0)*/
控制台日志(imgCanvas);
ctx.drawImage(imgCanvas,0,0,hzImgW,hzImgH);
},假);
};
//通过滑块般的色调、对比度、深褐色产生效果
scope.applyImageParameters=函数(){
色变、色变、色变、振动、色变;
hue=parseInt(angular.element('#hue').val());
cntrst=parseInt(angular.element('#contrast').val());
vibr=parseInt(angular.element('#vibrance').val());
sep=parseInt(angular.element('#sepia').val());
Caman('#photoEditorCanvas',imgCanvas,function(){
此项。还原(假);
//此参数为.reloadCanvasData();
this.hue(hue).contrast(cntrst).vibrance(vibr.sep.render();
});
};
角度。元素(“输入[类型=范围]”)。更改(“鼠标悬停”,函数(e){
scope.applyImageParameters();
console.log(“事件类型:+e.type”);
var min=e.target.min,
max=e.target.max,
val=e.目标值;
angular.element(e.target).css({
“背景尺寸”:(最小值)*100/(最大值最小值)+'%100%
});
//scope.reloadCanvasData();
});
}
};
}])
.directive('hzPhotoEditor', ['$timeout', function($timeout) {
return {
restrict: "E",
link: function(scope, elem, attrs) {
var imgCanvas, $save;
//init photo when click on real photo
scope.$on("fillCanvas", function(event, data) {
console.log("fill canvas called");
console.log(data.photo);
scope.fillCanvas(data);
});
scope.fillCanvas = function(data) {
var hzMIW = 0,
hzMIH = 0,
hzImgH = 0,
hzImgW = 0,
path = '',
c, c1, ctx, ctx1;
angular.element(".hz-photo-editor-wrapper").attr("style", angular.element(".hz-modal-wrapper").attr("style"));
angular.element(".hz-photo-editor-wrapper .hz-left").attr("style", angular.element(".hz-modal-wrapper .hz-left").attr("style"));
angular.element(".hz-photo-editor-wrapper .hz-modal-image-wrapper").attr("style", angular.element(".hz-modal-wrapper .hz-modal-image-wrapper").attr("style"));
angular.element(".hz-photo-editor-wrapper .hz-modal-image").attr("style", angular.element(".hz-modal-wrapper .hz-modal-image").attr("style"));
angular.element(".hz-photo-editor-wrapper .hz-photo-editor-img").attr("height", angular.element(".hz-modal-slider-image").height());
angular.element(".hz-photo-editor-wrapper .hz-photo-editor-img").attr("width", angular.element(".hz-modal-slider-image").width());
hzMIW = angular.element(".hz-modal-wrapper .hz-modal-image").css("width").replace("px", "");
hzMIH = angular.element(".hz-modal-wrapper .hz-modal-image").css("height").replace("px", "");
hzImgH = angular.element(".hz-modal-wrapper .hz-modal-image img").css('height').replace("px", "");
hzImgW = angular.element(".hz-modal-wrapper .hz-modal-image img").css('width').replace("px", "");
$(".hz-modal-image").children("canvas").remove();
var canvas_ = $("<canvas></canvas>").attr({id: 'photoEditorCanvas'});
$(".hz-modal-image").append(canvas_);
c = document.getElementById('photoEditorCanvas');
c.width = hzImgW;
c.height = hzImgH;
ctx = c.getContext('2d');
imgCanvas = new Image();
imgCanvas.src = path;
console.log("imgCanvas.src");
console.log(imgCanvas.src);
if (imgCanvas !== imgCanvas) {
console.log("canvas is load.....");
}
angular.element('input[type=range]').val(0);
imgCanvas.addEventListener('load', function() {
/*ctx.clearRect(0, 0, 0, 0);*/
console.log(imgCanvas);
ctx.drawImage(imgCanvas, 0, 0, hzImgW, hzImgH);
}, false);
};
//give effect by slider like hue, contrast, sepia
scope.applyImageParameters = function() {
var hue, cntrst, vibr, sep;
hue = parseInt(angular.element('#hue').val());
cntrst = parseInt(angular.element('#contrast').val());
vibr = parseInt(angular.element('#vibrance').val());
sep = parseInt(angular.element('#sepia').val());
Caman('#photoEditorCanvas', imgCanvas, function() {
this.revert(false);
//this.reloadCanvasData();
this.hue(hue).contrast(cntrst).vibrance(vibr).sepia(sep).render();
});
};
angular.element("input[type=range]").change("mouseup", function(e) {
scope.applyImageParameters();
console.log("event type: " + e.type);
var min = e.target.min,
max = e.target.max,
val = e.target.value;
angular.element(e.target).css({
'backgroundSize': (val - min) * 100 / (max - min) + '% 100%'
});
//scope.reloadCanvasData();
});
}
};
}])