Question

我可以使用KineticJS中的图像实现对齐网格操作用jquery？（http://jqueryui.com/demos/draggable/snap-to.html）就像我在画布中有几个可拖动的图像，我希望它们限制画布内的移动......

当一个图像在画布中靠近另一个图像时，它们是否可以一起拍摄？可以使用kinetic.js或javascript来实现......

由于阿希什

这是代码.. 这有点复杂。我的意思是我正在从画布外面加载图像..并且有两套......现在我想要一套能够捕捉到其他......

  <script src="kinetic-v3.8.0.min.js">
  </script>
  <link rel="stylesheet" href="../../themes/base/jquery.ui.all.css">
<script src="jquery-1.7.1.js"></script>
<script src="jquery.ui.core.js"></script>
<script src="jquery.ui.widget.js"></script>
<script src="jquery.ui.mouse.js"></script>
<script src="jquery.ui.draggable.js"></script>



    <script>
        function drawImage(imageObj){

            var stage = new Kinetic.Stage("container", 578, 500);
            var layer = new Kinetic.Layer();
            var x = stage.width / 2 - 200 / 2;
            var y = stage.height / 2 - 137 / 2;
            var width = 200;
            var height = 137;

            // darth vader
            var darthVaderImg = new Kinetic.Shape(function(){
                var context = this.getContext();

                context.clearRect(x,y,width,height);
                context.drawImage(imageObj, x, y, width, height);
                // draw invisible detectable path for image
                context.beginPath();
                context.rect(x, y, width, height);
                context.closePath(); 


          });

            // enable drag and drop
            darthVaderImg.draggable(true);

            // add cursor styling
            darthVaderImg.on("mouseover", function(){
                document.body.style.cursor = "pointer";
            });
            darthVaderImg.on("mouseout", function(){
                document.body.style.cursor = "default";
            });
            //remove image on double click
            darthVaderImg.on("dblclick dbltap", function(){
            layer.remove(darthVaderImg);


            layer.draw();
                });
            layer.add(darthVaderImg);
            stage.add(layer);

            //events

        }


         function drawImage2(imageObj){

            var stage = new Kinetic.Stage("container", 578, 500);
            var layer = new Kinetic.Layer();

            var x = stage.width / 2 - 300 ;
            var y = stage.height / 2 - 137 ;
            var width = 200;
            var height = 137;

            // darth vader

            var darthVaderImg2 = new Kinetic.Shape(function(){
                var context = this.getContext();

                context.drawImage(imageObj, x, y, width, height);

                // draw invisible detectable path for image
                context.beginPath();
                context.rect(x, y, width, height);
                context.closePath();

            });

            // enable drag and drop
            darthVaderImg2.draggable(true);

            // add cursor styling
            darthVaderImg2.on("mouseover", function(){
                document.body.style.cursor = "pointer";
            });
            darthVaderImg2.on("mouseout", function(){
                document.body.style.cursor = "default";
            });
            //remove image on double click
            darthVaderImg2.on("dblclick dbltap", function(){
            layer.remove(darthVaderImg2);


            layer.draw();



                   });
                layer.add(darthVaderImg2);

             stage.add(layer);



          $( ".darthVaderImg2" ).draggable({ grid: [ 20,20 ] });

             }



               function load(img){
                 // load image

                 var imageObj = new Image();
                 imageObj.onload = function(){

                drawImage(this);

                  };
                   imageObj.src = img.src;
                    };
                 function load2(img){
             // load image
                 var imageObj = new Image();
                imageObj.onload = function(){
                drawImage2(this);
               };
               imageObj.src = img.src;
                 };
             </script>
            <title>HTMl5 drag drop multiple elements</title></head>
             <body onmousedown="return false;">
              <div id="container">
              </div>
             <div id="check1">
            <ul id="img"> <li><a href="#"onclick="load(document.getElementById('i1'))">
            <img class="ui-widget-header" src="dog.png" id="i1" alt="doggie"     width="60"height="55"/>
      </a></li>
      <li>
        <a href="#" onclick="load(document.getElementById('i2'))">
        <img src="dog2.png" id="i2" alt="Pulpit rock" width="60" height="55"        /></a>
    </li>
    </ul>
    </div>
    <ul id="img1">
        <li><a href="#" onclick="load2(document.getElementById('i4'))">
            <img alt="doggie" src="beach.png" id="i4" width="60" height="55" />
             </a></li>
             <li><a href="#" onclick="load2(document.getElementById('i5'))">
        <img alt="doggie" src="cat3.png" id="i5" width="60" height="55" /></a></li>
       </ul>
       </body>
        </html>

Answer 1

您可以使用dragBoundFunc执行此操作。

      return {
        x: Math.round(pos.x / grid) * grid,
        y: Math.round(pos.y / grid) * grid
      }

我创建了一个完整的对齐示例：http://jsfiddle.net/PTzsB/1/

Answer 2

这一切都很有可能。不过，它需要比普通的jQuery用户更熟悉。

首先，实施管理单元：

这是一个简单的想法。您使用jQuery UI库。您可以通过在“KineticJsImage”类的所有元素上调用“snap-to”来为“snap-to”功能添加必要的功能。

$( ".KineticJsImage" ).draggable({ snap: true });

其次，对于KineticJs传播的所有图像，我们添加了“KineticJsImage”类

..I don't have anything to work with here...
You simply need to find where the image output is controlled and add a class
of KineticJsImage to the code.

正如您在第一个问题中提到的，您已找到了快照操作。该页面演示中的第二个框使用了通用（我上面提到的代码）snap：true参数。当你调用它时，你告诉页面将所有带有'KineticJsImage'类的可拖动元素捕捉到任何已被声明为draggle的元素。

 $(".someElement").draggable({ snap: false }); // drags wherever, does not snap.
 $(".KineticJsImage").draggable({snap: true }); // drags everywhere, snaps to anything.
 $(".KineticJsImage").draggable({snap: '.KineticJsImage' }); // This will ensure that
 any element with the class of 'KineticJsImage' is not only draggable, but will snap
 to any other element with the class of' 'KineticJsImage' that is also draggable.

您想要实现的一切都是使用jQuery UI和其中提供的可拖动/可放置扩展。

愚弄并试图找出答案。如果你不能，请回到代码，我们会告诉你去哪里。 $（“

Answer 3

我提交了一个不使用jQuery的问题的答案。相反，您可以应用一个补丁，它可以在HTML5画布上的KineticJS中使用捕捉到网格进行拖放。

Using jquery draggable UI with kineticJs to make elements snap to grid?

使用图像，kinetic.js，javascript对齐网格操作？

3 个答案: