一款基于TweenMax跟随鼠标单击移动的div-爱编程

一款基于TweenMax跟随鼠标单击移动的div

阅读：1981 时间：2018-02-01 03:25

前面给大家分享过一款基于jquery ui漂亮的可拖动div实例，今天给大家分享一款基于TweenMax跟随鼠标单击移动的div。在这款实例中你可以单击任意位置，div会移动到你单击的位置。效果图如下：

实现的代码。

html代码：

 <html ng-app="app" ng-click="moveblock($event)">
    <body>
        <block class="block">Where Do You Want Me?<br />Click Anywhere On The Page<br /> To Direct Me</block>
    </body>
    <!--Doesn't properly work with touch; working on a fix for that and will update if/when I get it right.. !-->
    <script src='angular.min.js'></script>
    <script src='TweenMax.min.js'></script>
    <script src='angular-animate.min.js'></script>
    <script>        //cue : highlight mouse click position
        (function () {
            var cue = document.createElement('div'),
  pressed = false;
            cue.id = 'cue';
            document.body.appendChild(cue);
            var offset = cue.offsetWidth / 2;
            document.addEventListener('mousedown', function (ev) {
                document.body.classList.add('down');
                pressed = true;
                movecue(ev.pageX, ev.pageY);
            }, false);
            document.addEventListener('mouseup', function (ev) {
                document.body.classList.remove('down');
                pressed = false;
            }, false);
            function movecue(x, y) {
                cue.style.left = x - offset + 'px';
                cue.style.top = y - offset + 'px';
            }
            document.addEventListener('mousemove', function (ev) {
                if (pressed) { movecue(ev.pageX, ev.pageY); }
            }, false);
        })();
        //********************
        //app directive
        angular
  .module("app", ["ngAnimate"])
  .directive("block", blockDirective)
  .animation(".block", blockAnimation);


        //  Move Block
        function blockDirective($animate) {

            return {
                restrict: "EA",
                link: function (scope, element, attrs) {

                    var radius = element[0].offsetWidth / 2;

                    TweenMax.set(element, {
                        x: window.innerWidth / 2 - radius,
                        y: window.innerHeight / 2 - radius
                    });

                    scope.moveblock = function ($event) {

                        $animate.animate(element, {}, {
                            x: $event.pageX - radius,
                            y: $event.pageY - radius
                        });
                    };
                }
            };
        }
        function blockAnimation() {

            return {
                animate: function (element, className, from, to, done) {

                    TweenMax.to(element, 0.5, {
                        x: to.x,
                        y: to.y,
                        ease: Back.easeOut,
                        force3D: true,
                        onStart: done
                    });
                }
            };
        }
        //@ sourceURL=pen.js
    </script>

css代码：

        html
        {
            cursor: pointer;
        }
        body
        {
            font-family: 'Lato' , sans-serif;
            font-size: 1em;
            margin: 0;
            background: radial-gradient(black 15%,   
  transparent 16%) 0 0, radial-gradient(black 15%,   
  transparent 16%) 8px 8px, radial-gradient(rgba(255,255,255,.1)  
  15%, transparent 20%) 0 1px, radial-gradient(rgba(255,255,255,.1)  
  15%, transparent 20%) 8px 9px;
            background-color: #282828;
            background-size: 16px 16px;
            overflow: hidden;
        }
        
        .block
        {
            width: 250px;
            color: #F7F6F2;
            text-align: center;
            padding-top: 1.5em;
            height: 100px;
            position: absolute;
            background: #000;
            opacity: 0.7;
            border-radius: 2px;
            border: none;
            -moz-box-sizing: border-box;
            -webkit-box-sizing: border-box;
            box-sizing: border-box;
            box-shadow: 4px 4px 4px 4px rgba(0,0,0,0.4);
            -moz-shadow: 4px 4px 4px 4px rgba(0,0,0,0.4);
            -webkit-shadow: 4px 4px 4px 4px rgba(0,0,0,0.4);
            box-shadow: -4px 4px -4px 4px rgba(0,0,0,0.4);
            -moz-shadow: -4px 4px -4px 4px rgba(0,0,0,0.4);
            -webkit-shadow: -4px 4px -4px 4px rgba(0,0,0,0.4);
        }
        #cue
        {
            background: rgba(255, 255, 10, 0.5 );
            width: 100px;
            height: 100px;
            position: absolute;
            border-radius: 100px;
            -webkit-transition: -webkit-transform 1s;
            -moz-transition: -moz-transform 1s;
            -ms-transition: -ms-transform 1s;
            -o-transition: -o-transform 1s;
            transition: transform 1s;
            -webkit-transform: scale( 0,0 );
            -moz-transform: scale( 0,0 );
            -ms-transform: scale( 0,0 );
            -o-transform: scale( 0,0 );
            transform: scale( 0,0 );
        }
        .down #cue
        {
            -webkit-transform: scale( 1, 1 );
            -moz-transform: scale( 1, 1 );
            -ms-transform: scale( 1, 1 );
            -o-transform: scale( 1, 1 );
            transform: scale( 1, 1 );
        }

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