我将如何在Raphael中绘制一条连接线,其中mousedown启动线的起点,鼠标移动终点而不移动起点,鼠标按原样离开它?
答案 0 :(得分:22)
查看http://www.warfuric.com/taitems/RaphaelJS/arrow_test.htm的来源。
这可能会让你开始。
修改的
我做了一个快速的例子,它将为您提供一个良好的开端(但仍需要一些工作:参数验证,添加注释等)。
注意:您仍需要调整raphael.js的路径
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xml:lang="en" xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta http-equiv="edit-Type" edit="text/html; charset=utf-8">
<!-- Update the path to raphael js -->
<script type="text/javascript"src="path/to/raphael1.4.js"></script>
<script type='text/javascript'
src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<style type='text/css'>
svg {
border: solid 1px #000;
}
</style>
</head>
<body>
<div id="raphaelContainer"></div>
<script type='text/javascript'>
//<![CDATA[
function Line(startX, startY, endX, endY, raphael) {
var start = {
x: startX,
y: startY
};
var end = {
x: endX,
y: endY
};
var getPath = function() {
return "M" + start.x + " " + start.y + " L" + end.x + " " + end.y;
};
var redraw = function() {
node.attr("path", getPath());
}
var node = raphael.path(getPath());
return {
updateStart: function(x, y) {
start.x = x;
start.y = y;
redraw();
return this;
},
updateEnd: function(x, y) {
end.x = x;
end.y = y;
redraw();
return this;
}
};
};
$(document).ready(function() {
var paper = Raphael("raphaelContainer",0, 0, 300, 400);
$("#raphaelContainer").mousedown(
function(e) {
x = e.offsetX;
y = e.offsetY;
line = Line(x, y, x, y, paper);
$("#raphaelContainer").bind('mousemove', function(e) {
x = e.offsetX;
y = e.offsetY;
line.updateEnd(x, y);
});
});
$("#raphaelContainer").mouseup(
function(e) {
$("#raphaelContainer").unbind('mousemove');
});
});
//]]>
</script>
</body>
</html>
答案 1 :(得分:9)
您可以将自己的line
方法添加到Paper类...
Raphael.fn.line = function(startX, startY, endX, endY){
return this.path('M' + startX + ' ' + startY + ' L' + endX + ' ' + endY);
};
...稍后您可以使用它,就像Paper类(圆圈等)中的任何其他已知方法一样:
var paper = Raphael('myPaper', 0, 0, 300, 400);
paper.line(50, 50, 250, 350);
paper.line(250, 50, 50, 150).attr({stroke:'red'});