freifunk/ffmap-backend
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add dragging-state

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This commit is contained in:
Nils Schneider 2012-09-05 03:18:25 +02:00
parent c8a4882f38
commit 4d98854ce3
1 changed files with 34 additions and 1 deletions
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35
html/force.js
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@ -158,6 +158,8 @@ function isConnected(a, b) {
function fade(opacity) {
return function(d) {
if (dragging) return
vis.selectAll("g.node")
  .style("stroke-opacity", function(o) {
var connected = isConnected(d, o)
@ -380,6 +382,33 @@ var linkcolor = {'default':
.range(["#0a3", "orange", "red"]),
}
var dragging = false
var node_drag = d3.behavior.drag()
.on("dragstart", dragstart)
.on("drag", dragmove)
.on("dragend", dragend)
var d3_layout_forceDragNode
function dragstart(d) {
dragging = true
d3_layout_forceDragNode = d
d.fixed |= 2
}
function dragmove() {
d3_layout_forceDragNode.px = d3.event.x
d3_layout_forceDragNode.py = d3.event.y
force.resume() // restart annealing
}
function dragend() {
d3_layout_forceDragNode.fixed &= 1
d3_layout_forceDragNode = null
dragging = false
}
function update() {
var links = data.links
.filter(function (d) {
@ -407,10 +436,14 @@ function update() {
return "link " + d.type
})
.on("mouseover", function(d) {
if (dragging) return
d.source.fixed |= 2
d.target.fixed |= 2
})
.on("mouseout", function(d) {
if (dragging) return
d.source.fixed &= 1
d.target.fixed &= 1
})
@ -474,7 +507,7 @@ function update() {
.on("mouseover", fade(.2))
.on("mouseout", fade(1))
.on("click", show_node_info)
.call(force.drag)
.call(node_drag)
nodeEnter.append("ellipse")
.attr("class", function(d) {