4

基本上,我想使用网格选项将可拖动的 div 捕捉到 30 x 30 网格,但我想保持拖动平滑。那么有没有一种方法可以在鼠标释放时捕捉到网格(或类似的东西)

4

3 回答 3

5

对@Zed 的更正这将使用中心来决定将其放置在哪个网格中。大多数可拖动对象位于哪个网格中。

stop: function(e, ui) {
    var grid_x = 30;
    var grid_y = 30;
    var elem = $( this );
    var left = parseInt(elem.css('left'));
    var top = parseInt(elem.css('top'));
    var cx = (left % grid_x);
    var cy = (top % grid_y);

    var new_left = (Math.abs(cx)+0.5*grid_x >= grid_x) ? (left - cx + (left/Math.abs(left))*grid_x) : (left - cx);
    var new_top = (Math.abs(cy)+0.5*grid_y >= grid_y) ? (top - cy + (top/Math.abs(top))*grid_y) : (top - cy);

    ui.helper.stop(true).animate({
        left: new_left,
        top: new_top,
        opacity: 1,
    }, 200);
},
于 2011-06-19T18:10:20.423 回答
3

如果这就是你想要对网格做的所有事情,你可以模仿它:

$("#myobj").draggable({
  ...
  stop: function(event, ui) {
    t = parseInt($(this).css(top);
    l = parseInt($(this).css(left);
    $(this).css(top , t - t % 30);
    $(this).css(left, l - l % 30);
  }
  ...
});
于 2009-07-31T21:28:50.950 回答
0

尝试过渡!

我刚刚发现的一个很好的小东西是,如果你给拖动的元素提供过渡的 css 属性,它将影响它捕捉到网格的速度。

$(function() {
  $(".draggable").draggable({
    containment: 'window',
    grid: [30, 30]
  });
});
.draggable {
  background: #333;
  color: whitesmoke;
  font-family: 'sans-serif', 'arial';
  padding: 5px 12px;
  display: inline-block;
  transition: top 0.05s ease-in-out, left 0.05s ease-in-out
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script>

<div class="draggable">Drag Me!</div>

于 2016-01-12T16:00:40.190 回答