<html>
<head>
<title>raphael流程图-http://my.oschina.net/lichaoqiang/</title>
<script src="js/jquery.min.js"></script>
<script src="js/raphael.js"></script>
<style type="text/css">
html, fieldet, legend, div, span, a, form, body{ margin: 0;padding: 0; }
body{ font-size:12px;}
#holder{top: 0px;left: 0px;right: 0px;bottom: 0px; position: absolute;z-index: 999;height: auto;}
.item{position: absolute; top: 0px; z-index: 0; padding: 0px; height: 30px; 200px;}
</style>
</head>
<body>
<div id="holder"></div>
<div id="item1" class="item" data-item='{"nodeId":"1","nextNode":"2"}' title="请假申请">请假申请</div>
<div id="item2" class="item" data-item='{"nodeId":"2","nextNode":"3"}' title="开始审批">开始审批</div>
<div id="item3" class="item" data-item='{"nodeId":"3","nextNode":"4"}' title="部门审批">部门审批</div>
<div id="item4" class="item" data-item='{"nodeId":"4","nextNode":"5"}' title="单位审批">单位审批</div>
<div id="item5" class="item" data-item='{"nodeId":"5","nextNode":""}' title="领导批示">领导批示</div>
<script type="text/javascript">
$(function () {
//用来存储节点的顺序
var connections = [];
//拖动节点开始时的事件
var dragger = function () {
this.ox = this.attr("x");
this.oy = this.attr("y");
this.animate({ "fill-opacity": 0.2 }, 500);
};
//拖动事件
var move = function (dx, dy) {
var att = { x: this.ox + dx, y: this.oy + dy };
this.attr(att);
$("#item" + this.id).offset({ top: this.oy + dy + 10, left: this.ox + dx + 10 });
for (var i = connections.length; i--;) { r.drawArr(connections[i]); }
};
//拖动结束后的事件
var up = function () { this.animate({ "fill-opacity": 0 }, 500); };
//创建绘图对象
var r = Raphael("holder", $(window).width(), $(window).height());
//定义元素坐标高宽
var $nodeList = $(".item"); //节点集合jquery对象
var _x, _y, _w, _h, shapeLen;
shapeLen = $nodeList.length; //节点数量
_x = 190; _y = 100; _h = 60; _w = 40;
var shapes = new Object(); //节点集合
$nodeList.each(function (index, item) {
_w = $(item).width(); //元素的宽
_h = $(item).height(); //元素的高
var r_y = (_h + 100) * index + 20;
//节点json数据
var data_item = $.parseJSON($(item).attr("data-item"));
shapes[data_item.nodeId] = r.rect(_x, r_y, _w, _h, 4);
$(item).offset({ top: r_y + 6, left: _x + 10 });
//为节点添加样式和事件，并且绘制节点之间的箭头
var color = Raphael.getColor();
shapes[data_item.nodeId].attr({ fill: color, stroke: color, "fill-opacity": 0, "stroke-width": 2, cursor: "move" });
shapes[data_item.nodeId].id = index + 1;
shapes[data_item.nodeId].drag(move, dragger, up); //拖动节点事件
shapes[data_item.nodeId].dblclick(function () { alert(this.id) }); //绑定双击节点事件
shapes[data_item.nodeId].attr("title", item.title);
item.innerHTML = data_item.nodeId + item.innerHTML;
});
//存储节点间的顺序
$nodeList.each(function (i, item) {
//节点json数据
var data_item = $.parseJSON($(item).attr("data-item"));
if (data_item.nextNode) {
connections.push(r.drawArr({ obj1: shapes[data_item.nodeId], obj2: shapes[data_item.nextNode] }));
}
});
});
//随着节点位置的改变动态改变箭头
Raphael.fn.drawArr = function (obj) {
var point = getStartEnd(obj.obj1, obj.obj2);
var path1 = getArr(point.start.x, point.start.y, point.end.x, point.end.y, 8);
if (obj.arrPath) {
obj.arrPath.attr({ path: path1 });
} else {
obj.arrPath = this.path(path1);
}
return obj;
};
function getStartEnd(obj1, obj2) {
var bb1 = obj1.getBBox(),
bb2 = obj2.getBBox();
var p = [
{ x: bb1.x + bb1.width / 2, y: bb1.y - 1 },
{ x: bb1.x + bb1.width / 2, y: bb1.y + bb1.height + 1 },
{ x: bb1.x - 1, y: bb1.y + bb1.height / 2 },
{ x: bb1.x + bb1.width + 1, y: bb1.y + bb1.height / 2 },
{ x: bb2.x + bb2.width / 2, y: bb2.y - 1 },
{ x: bb2.x + bb2.width / 2, y: bb2.y + bb2.height + 1 },
{ x: bb2.x - 1, y: bb2.y + bb2.height / 2 },
{ x: bb2.x + bb2.width + 1, y: bb2.y + bb2.height / 2 }
];
var d = {}, dis = [];
for (var i = 0; i < 4; i++) {
for (var j = 4; j < 8; j++) {
var dx = Math.abs(p[i].x - p[j].x),
dy = Math.abs(p[i].y - p[j].y);
if (
(i == j - 4) ||
(((i != 3 && j != 6) || p[i].x < p[j].x) &&
((i != 2 && j != 7) || p[i].x > p[j].x) &&
((i != 0 && j != 5) || p[i].y > p[j].y) &&
((i != 1 && j != 4) || p[i].y < p[j].y))
) {
dis.push(dx + dy);
d[dis[dis.length - 1]] = [i, j];
}
}
}
if (dis.length == 0) {
var res = [0, 4];
} else {
res = d[Math.min.apply(Math, dis)];
}
var result = {};
result.start = {};
result.end = {};
result.start.x = p[res[0]].x;
result.start.y = p[res[0]].y;
result.end.x = p[res[1]].x;
result.end.y = p[res[1]].y;
return result;
}
//获取组成箭头的三条线段的路径
function getArr(x1, y1, x2, y2, size) {
var angle = Raphael.angle(x1, y1, x2, y2); //得到两点之间的角度
var a45 = Raphael.rad(angle - 45); //角度转换成弧度
var a45m = Raphael.rad(angle + 45);
var x2a = x2 + Math.cos(a45) * size;
var y2a = y2 + Math.sin(a45) * size;
var x2b = x2 + Math.cos(a45m) * size;
var y2b = y2 + Math.sin(a45m) * size;
var result = ["M", x1, y1, "L", x2, y2, "L", x2a, y2a, "M", x2, y2, "L", x2b, y2b];
return result;
}
</script>
</body>
</html>