节点拖动无法在iPad上运行

时间:2013-07-10 02:28:40

标签: javascript d3.js

我想拖动节点并拖动画布(svg元素) 在桌面浏览器上,它工作正常,但在iPad上它只拖动画布;节点拖动无效。我哪里出错了?

我的源代码:

<!DOCTYPE html>
<meta charset="utf-8">
<style>

.node {
stroke: #fff;
stroke-width: 1.5px;
}

.link {
stroke: #999;
}

</style>
<body>
<script src="d3.js"></script>
<script>

var view_w = width = 960,
    view_h = height = 500,
    view_y = 0,
    view_x = 0;

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height)
    .attr("viewBox", view_x+" "+view_y+" "+view_w+" "+view_h);

var canvasdrag = d3.behavior.drag().on("drag", function(d){

    view_x -= d3.event.dx;
    view_y -= d3.event.dy;

    //change svg position
    svg.attr("translate", view_x + " " + view_y);
    //change viewBox start position
    svg.attr("viewBox", view_x+" "+view_y+" "+view_w+" "+view_h);
});
svg.call(canvasdrag);

d3.json("./sample.json", function(error, graph) {

graph.links.forEach(function(d) {
    d.source = graph.nodes[d.source];
    d.target = graph.nodes[d.target];
});

var link = svg.append("g")
    .attr("class", "link")
    .selectAll("line")
    .data(graph.links)
    .enter().append("line")
    .attr("x1", function(d) { return d.source.x; })
    .attr("y1", function(d) { return d.source.y; })
    .attr("x2", function(d) { return d.target.x; })
    .attr("y2", function(d) { return d.target.y; });

var node = svg.append("g")
    .attr("class", "node")
    .selectAll("circle")
    .data(graph.nodes)
    .enter().append("circle")
    .attr("r", 6)
    .attr("cx", function(d) { return d.x; })
    .attr("cy", function(d) { return d.y; })
    .call(d3.behavior.drag()
        .origin(function(d) { return d; })
        .on("drag", function(d) {
        d.x = d3.event.x, d.y = d3.event.y;
        d3.select(this).attr("cx", d.x).attr("cy", d.y);
        link.filter(function(l) { return l.source === d; }).attr("x1", d.x).attr("y1", d.y);
        link.filter(function(l) { return l.target === d; }).attr("x2", d.x).attr("y2", d.y);
        }));
});

</script>

[sample.json]

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我正在使用d3.js版本788855b4a4141fab9554513976dcc50004c76489。

0 个答案:

没有答案