可拖动和可扩展的遏制

发布于 2024-09-26 02:01:26 字数 1283 浏览 2 评论 0原文

我试图授权仅在其遏制的右侧或底部拖出一个对象，并且如果不停止拖动该元素就无法正确执行此操作。

我的代码：

<!DOCTYPE html>
<html>
<head>
  <style>
  #parent { height: 500px; width: 500px; border: 1px black solid; }
  #images { height: 100px; width: 100px; background-color:orange; }
  </style>
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.js"></script>
  <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.5/jquery-ui.js"></script>
</head>
<body>
<div id="parent">
    <div id="images"></div>
</div>
<script>
$(document).ready(function() {
    $("#images").draggable({
        containment: $("#parent"),
        drag: function(event, ui) {
            var helper = ui.helper, pos = ui.position;
            if(pos.left + parseInt(helper.outerWidth(), 10) == parseInt($("#parent").css("width"), 10)) {
                $("#parent").animate({width: "+=100"});
            }
            if(pos.top + parseInt(helper.outerHeight(), 10) == parseInt($("#parent").css("height"), 10)) {
                $("#parent").animate({height: "+=100"});
            }
        }
    });
});
</script>
</body>
</html>

您知道如何刷新容器大小以便继续在右侧或底部拖动吗？

谢谢！

原文

i'm trying to the authorize to drag out an object only on the right or bottom side of his containment and cannot do it properly whitout stop dragging the element.

My code:

<!DOCTYPE html>
<html>
<head>
  <style>
  #parent { height: 500px; width: 500px; border: 1px black solid; }
  #images { height: 100px; width: 100px; background-color:orange; }
  </style>
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.js"></script>
  <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.5/jquery-ui.js"></script>
</head>
<body>
<div id="parent">
    <div id="images"></div>
</div>
<script>
$(document).ready(function() {
    $("#images").draggable({
        containment: $("#parent"),
        drag: function(event, ui) {
            var helper = ui.helper, pos = ui.position;
            if(pos.left + parseInt(helper.outerWidth(), 10) == parseInt($("#parent").css("width"), 10)) {
                $("#parent").animate({width: "+=100"});
            }
            if(pos.top + parseInt(helper.outerHeight(), 10) == parseInt($("#parent").css("height"), 10)) {
                $("#parent").animate({height: "+=100"});
            }
        }
    });
});
</script>
</body>
</html>

Have you an idea how about refreshing the containment size in order to continue dragging on the right or bottom side ?

Thanks !

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秋心╮凉 2024-10-03 02:01:26

简单的解决方案（参见DEMO）：

<!DOCTYPE html>
<html>
<head>
  <style>
  #parent { height: 300px; width: 300px; border: 1px black solid; position: relative; left: 0; }
  #images { height: 100px; width: 100px; background-color:orange; }
  </style>
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.js"></script>
  <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.5/jquery-ui.js"></script>
</head>
<body>
<div id="parent">
    <div class="container">
        <div id="images"></div>
    </div>
</div>
<script>
$(document).ready(function() {
    var
        $document = $(document),
        $parent = $("#parent"),
        $container = $(".container", $parent),
        offset = $container.offset(),
        scrollbarSafety = 15; // use this to avoid dragging outside of window, thus creating scrollbars and wreaking all kinds of havoc on draggables containment checks

    $container
        .width($document.width() - offset.left - scrollbarSafety)
        .height($document.height() - offset.top - scrollbarSafety);

    $("#images")
            .draggable(
            {
                containment: $container,
                drag:
                    function(event, ui)
                    {
                        var
                            $draggee = $(this),
                            draggeePosition = $draggee.position(),
                            shouldWidth = draggeePosition.left + $draggee.width(),
                            shouldHeight = draggeePosition.top + $draggee.height();
                        if($parent.width() < shouldWidth)
                        {
                            $parent.width(shouldWidth);
                        }
                        if($parent.height() < shouldHeight)
                        {
                            $parent.height(shouldHeight);
                        }
            }
            }
        );
});
</script>
</body>
</html>

Simple solution (see DEMO):

<!DOCTYPE html>
<html>
<head>
  <style>
  #parent { height: 300px; width: 300px; border: 1px black solid; position: relative; left: 0; }
  #images { height: 100px; width: 100px; background-color:orange; }
  </style>
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.js"></script>
  <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.5/jquery-ui.js"></script>
</head>
<body>
<div id="parent">
    <div class="container">
        <div id="images"></div>
    </div>
</div>
<script>
$(document).ready(function() {
    var
        $document = $(document),
        $parent = $("#parent"),
        $container = $(".container", $parent),
        offset = $container.offset(),
        scrollbarSafety = 15; // use this to avoid dragging outside of window, thus creating scrollbars and wreaking all kinds of havoc on draggables containment checks

    $container
        .width($document.width() - offset.left - scrollbarSafety)
        .height($document.height() - offset.top - scrollbarSafety);

    $("#images")
            .draggable(
            {
                containment: $container,
                drag:
                    function(event, ui)
                    {
                        var
                            $draggee = $(this),
                            draggeePosition = $draggee.position(),
                            shouldWidth = draggeePosition.left + $draggee.width(),
                            shouldHeight = draggeePosition.top + $draggee.height();
                        if($parent.width() < shouldWidth)
                        {
                            $parent.width(shouldWidth);
                        }
                        if($parent.height() < shouldHeight)
                        {
                            $parent.height(shouldHeight);
                        }
            }
            }
        );
});
</script>
</body>
</html>

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