两个可放置的区域第一个只能工作 [英] two droppable area first one works only

问题描述

请参阅以下链接： http://liveweave.com/d8F0Qw [ ^ ]



i有两个可丢弃的部分，具有不同的id我想要将imgaes放入不同的部分 。我觉得它适用于第一次投放但不适用于第二次。



如何检测可投放区域并将图像放在那里？...



Html代码：

see below link : http://liveweave.com/d8F0Qw[^]

i have two droppable portion with different id i want to drop imgaes in different section . problem i that it works fine for first droppable but not for second one.

how can i detect droppable area and place image there ?...

Html Code:

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.9.2/jquery-ui.js"></script>
<script src="http://fabricjs.com/lib/fabric.js"></script>

<div id="wrapper">
<table>
<tr valign="top">
<td>
    <ul id="image-list"><li><img src="http://www.gettyimages.com/CMS/Pages/ImageCollection/StaticContent/image1_%20164248809.jpg" class="draggable-image"></li>
    </ul>
</td><td>
    <div id="content">
    <table>
        <tr><td>
            <canvas id="canvas" width="320" height="256">
            </canvas>
        <div id="canvas-drop-area"></div>
        </td></tr>
        <tr><td>
            <canvas id="canvas1" width="320" height="256">
            </canvas>
        <div id="canvas-drop-area1"></div>
        </td></tr>
    </table>

        <!--div id="canvas-drop-area"></div-->
    </div>
</td><td>
    <ul id="image-list"><li><img src="http://upload.wikimedia.org/wikipedia/commons/c/c3/Aurora_as_seen_by_IMAGE.PNG" class="draggable-image"></li>
    </ul>

</td></tr>

</table>
</div>

javascript代码：

javascript code:

(function () {
    var canvas = new fabric.Canvas('canvas');
    var canvas_el = document.getElementById('canvas');

    var canvas1 = new fabric.Canvas('canvas1');


    $(document).ready(function () {



        /* Define drag and drop zones */
        var $drop = $('#canvas-drop-area'),
            $drop1 = $('#canvas-drop-area1'),
            $gallery = $('td > #image-list li'),
            $draggedImage=null;

        /* Define the draggable properties */
        $gallery.draggable({
             helper: 'clone',
            start: function (e) {
            $draggedImage=event.target;
                $drop.css({
                    'display': 'block'
                })
            },
            stop: function () {
                $(this).find('img').css({
                   /* 'opacity': 0.4 */
                });
                $drop.css({
                    'display': 'none'
                });
                $draggedImage=null;
            },
            revert: true
        });

        /* Define the events for droppable properties */
        $drop.droppable({
            over: function (event, ui) {
                $(this).addClass('active');
            },
            drop: function (event, ui) {
                var image =$draggedImage&& $draggedImage.src;
                console.log($draggedImage.alt);
                img_to_canvas(image,$draggedImage.alt,1);
            },
            out: function (event, ui) {
                $(this).removeClass('active');
            },
            deactivate: function (event, ui) {
                $(this).removeClass('active');
            }
        });



        $drop1.droppable({
            over: function (event, ui) {
                $(this).addClass('active');
            },
            drop: function (event, ui) {
                var image =$draggedImage&& $draggedImage.src;
                console.log($draggedImage.alt);
                img_to_canvas(image,$draggedImage.alt,2);
            },
            out: function (event, ui) {
                $(this).removeClass('active');
            },
            deactivate: function (event, ui) {
                $(this).removeClass('active');
            }
        });


    });


    var img_to_canvas = function(image,sendfront,checkcanvas) {
        var img = new Image();
        img.src = image;
        fabric.Image.fromURL(img.src, function (source) {
            img = source.set({
                left: 0,
                top: 0,
                angle: 0,
                id:sendfront
            });
        if(checkcanvas=='1'){
            canvas.add(img);
            if(sendfront=='start'){
                canvas.sendToBack(img);
            }
            canvas.renderAll();
        }else{
            canvas1.add(img);
            if(sendfront=='start'){
                canvas1.sendToBack(img);
            }
            canvas1.renderAll();
        }

        });
    }
})();

更正了格式和/或语法问题。

添加预标签。

[/编辑]

推荐答案

（ document ）。ready（ function （）{



/ * 定义拖放区* /
var

(document).ready(function () { /* Define drag and drop zones */ var

drop =

（' ＃canvas-drop-area'），

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