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我正在使用 Kinetic.js 在画布中进行一些拖动,并且试图检测鼠标是否离开浏览器窗口。唯一的区别是我还希望它在移出时按下鼠标按钮时触发。

这个线程几乎解决了这个问题,但是如果你在移出时按下鼠标左键它不起作用:链接

对我来说,只要按下鼠标左键,mouseout 事件似乎就会被忽略。我在这里做了一个测试。有任何想法吗?

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1 回答 1

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您可以在按下鼠标时设置 isDown 标志。然后在释放鼠标时清除 isDown 标志。并跟踪 mouseout + isDown 标志以查看用户是否在按下鼠标时离开

这是 jQuery 版本:

var isDown=false;

$(stage.getContent()).on('mousedown',function(e){ isDown=true; });
$(stage.getContent()).on('mouseup',function(e){ isDown=false; });
$(stage.getContent()).on('mouseout',function(e){ 
    console.log(isDown);
    isDown=false; 
});

这是代码和小提琴:http: //jsfiddle.net/m1erickson/ZjKGS/

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Prototype</title>
    <script type="text/javascript" src="http://code.jquery.com/jquery.min.js"></script>
    <script src="http://d3lp1msu2r81bx.cloudfront.net/kjs/js/lib/kinetic-v4.7.0.min.js"></script>

<style>
#container{
  border:solid 1px #ccc;
  margin-top: 10px;
  width:400px;
  height:400px;
}
</style>        
<script>
$(function(){

    var stage = new Kinetic.Stage({
        container: 'container',
        width: 300,
        height: 300
    });
    var layer = new Kinetic.Layer();
    stage.add(layer);

    var isDown = false;

    $(stage.getContent()).on('mousedown', function (e) {
        isDown = true;
    });
    $(stage.getContent()).on('mouseup', function (e) {
        isDown = true;
    });
    $(stage.getContent()).on('mouseout', function (e) {
        if(isDown){
            $("#indicator").text("Moved out and mouse was pressed");
        }else{
            $("#indicator").text("Moved out and mouse was not pressed");
        }
        isDown = false;
    });

    layer.draw();

}); // end $(function(){});

</script>       
</head>

<body>
    <p>Move mouse out of kinetic stage</p>
    <p>Indicator will tell if mouse was also pressed</p>
    <p id="indicator">Indicator</p>
    <div id="container"></div>
</body>
</html>
于 2013-09-22T21:00:51.907 回答