1295 Support for subgraphs with wide labels

src/dagre-wrapper/clusters.js

@@ -0,0 +1,70 @@
+import intersectRect from './intersect/intersect-rect';
+import { logger } from '../logger'; // eslint-disable-line
+import createLabel from './createLabel';
+
+const rect = (parent, node) => {
+  // Add outer g element
+  const shapeSvg = parent
+    .insert('g')
+    .attr('class', 'cluster')
+    .attr('id', node.id);
+
+  // add the rect
+  const rect = shapeSvg.insert('rect', ':first-child');
+
+  // Create the label and insert it after the rect
+  const label = shapeSvg.insert('g').attr('class', 'cluster-label');
+
+  const text = label.node().appendChild(createLabel(node.labelText, node.labelStyle));
+
+  // Get the size of the label
+  const bbox = text.getBBox();
+
+  const padding = 0 * node.padding;
+  const halfPadding = padding / 2;
+
+  // center the rect around its coordinate
+  rect
+    .attr('rx', node.rx)
+    .attr('ry', node.ry)
+    .attr('x', node.x - node.width / 2 - halfPadding)
+    .attr('y', node.y - node.height / 2 - halfPadding)
+    .attr('width', node.width + padding)
+    .attr('height', node.height + padding);
+
+  const adj = (node.width + node.padding - bbox.width) / 2;
+
+  // Center the label
+  label.attr('transform', 'translate(' + adj + ', ' + (node.y - node.height / 2) + ')');
+  // label.attr('transform', 'translate(' + 70 + ', ' + -node.height / 2 + ')');
+
+  const rectBox = rect.node().getBBox();
+  node.width = rectBox.width;
+  node.height = rectBox.height;
+
+  node.intersect = function(point) {
+    return intersectRect(node, point);
+  };
+
+  return shapeSvg;
+};
+
+const shapes = { rect };
+
+const clusterElems = {};
+
+export const insertCluster = (elem, node) => {
+  clusterElems[node.id] = shapes[node.shape](elem, node);
+};
+export const getClusterTitleWidth = (elem, node) => {
+  const label = createLabel(node.labelText, node.labelStyle);
+  elem.node().appendChild(label);
+  const width = label.getBBox().width;
+  elem.node().removeChild(label);
+  return width;
+};
+
+export const positionCluster = node => {
+  const el = clusterElems[node.id];
+  el.attr('transform', 'translate(' + node.x + ', ' + node.y + ')');
+};