08-27-周三_17-09-29

node_modules/dagre-d3-renderer/lib/position-edge-labels.js

@@ -0,0 +1,21 @@
+import d3 from 'd3'
+import _ from 'lodash'
+
+import util from './util'
+
+function positionEdgeLabels (selection, g) {
+  const created = selection.filter(function () { return !d3.select(this).classed('update') })
+
+  function translate (e) {
+    const edge = g.edge(e)
+    return _.has(edge, 'x') ? 'translate(' + edge.x + ',' + edge.y + ')' : ''
+  }
+
+  created.attr('transform', translate)
+
+  util.applyTransition(selection, g)
+    .style('opacity', 1)
+    .attr('transform', translate)
+}
+
+export default positionEdgeLabels