Question

我正在尝试增加图像放置区域的目标大小，以便当用户拖动它时，它们可以告诉它应该放置的位置，并且页面不会随机调整到被丢弃的图像那个drop得到图像的顺序列表。如何使目标更大并获取图像信息？图像上的信息可以只是源名称列表。

编辑：我想将一个项目拖动到框中，它会作为第一个项目上升并增加目标框的范围，以便用户可以放心地用正确的提示拖入框中。

var order;
var adjustment;

var group = $("ol.simple_with_animation").sortable({
  group: 'simple_with_animation',
  pullPlaceholder: false,
  // animation on drop
  onDrop: function($item, container, _super) {

    var $clonedItem = $('<li/>').css({
      height: 0
    });
    $item.before($clonedItem);
    $clonedItem.animate({
      'height': $item.height()
    });

    $item.animate($clonedItem.position(), function() {
      $clonedItem.detach();
      _super($item, container);
    });
    var data = group.sortable("serialize").get();
    order = data[1];
    console.log(order);
  },

  // set $item relative to cursor position
  onDragStart: function($item, container, _super) {
    var offset = $item.offset(),
      pointer = container.rootGroup.pointer;

    adjustment = {
      left: pointer.left - offset.left,
      top: pointer.top - offset.top
    };

    _super($item, container);
  },
  onDrag: function($item, position) {
    $item.css({
      left: position.left - adjustment.left,
      top: position.top - adjustment.top
    });
  },
  serialize: function(parent, children, isContainer) {
    return isContainer ? children.join() : parent.text();
  },
  tolerance: 6,
  distance: 10
});

body.dragging,
body.dragging * {
  cursor: move !important;
}

.dragged {
  position: absolute;
  opacity: 0.5;
  z-index: 2000;
}

ol.simple_with_animation li.placeholder {
  position: relative;
  /** More li styles **/
}

ol.simple_with_animation li.placeholder:before {
  position: absolute;
  /** Define arrowhead **/
}

#GamblerOrderSource,
#GamblerOrderTarget {
  min-height: 50px;
  margin: 0px 25px 10px 0px;
  padding: 2px;
  border-width: 1px;
  border-style: solid;
  -webkit-border-radius: 3px;
  -moz-border-radius: 3px;
  border-radius: 3px;
  list-style-type: none;
  list-style-position: inside;
  display: inline-block;
}

#GamblerOrderSource {
  border: 2px dashed #f8e0b1 !important;
  background-color: #fefcf5 !important;
}

#GamblerOrderTarget {
  border: 2px dashed #add38d !important;
  background-color: #f6fbf4 !important;
}

#GamblerOrderSource li {
  background-color: #fcf8e3;
  border: 1px solid #fbeed5;
  color: #c09853;
}

#GamblerOrderTarget li {
  background-color: #ebf5e6;
  border: 1px solid #d6e9c6;
  color: #468847;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-sortable/0.9.13/jquery-sortable-min.js"></script>
<form id="orderform" method='POST'>
  <div id='GamblerOrderSource'>
    <ol class='simple_with_animation'>
  <li id="image_first"><img src="http://ec2-54-244-61-189.us-west-2.compute.amazonaws.com//static/DEAD.ICO"></li>
<li id="image_second"><img src="http://ec2-54-244-61-189.us-west-2.compute.amazonaws.com//static/DEAD.ICO"></li>
  <li id="image_third"><img src="http://ec2-54-244-61-189.us-west-2.compute.amazonaws.com//static/DEAD.ICO"></li>
<li id="image_fourth"><img src="http://ec2-54-244-61-189.us-west-2.compute.amazonaws.com//static/DEAD.ICO"></li>
    </ol>
  </div>
  <div id='GamblerOrderTarget'>
    <ol class='simple_with_animation'>
    </ol>
  </div>
  <input type="submit" value="Continue" />
</form>

Answer 1

使用Jquery-sortable我只需将其修改为以下内容：

.dragged {
  position: absolute;
  opacity: 0.5;
  z-index: 2000;
}
ol.simple_with_animation li.placeholder {
  position: relative;
  /** More li styles **/
   font-size: 200%; /* or whatever */
}

增加目标框并从Jquery-sortable获取图像信息

1 个答案: