AJ Kelly
273 lines
9.9 KiB
Plaintext
273 lines
9.9 KiB
Plaintext
#
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# dotty_layout: layout functions and data structures
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#
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dotty.grablserver = function (lserver) {
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local fd;
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if (~dotty.lservers[lserver] | tablesize (dotty.lservers[lserver]) == 0) {
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if (~((fd = openio ('pipe', lserver, 'r+')) >= 0)) {
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dotty.message (0, concat ('cannot start ', lserver));
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return null;
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}
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dotty.lservers[lserver][fd] = [
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'fd' = fd;
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'count' = 0;
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];
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}
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for (fd in dotty.lservers[lserver]) {
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dotty.lservers[lserver][fd].count =
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dotty.lservers[lserver][fd].count + 1;
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dotty.lservers.inuse[fd] = dotty.lservers[lserver][fd];
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remove (fd, dotty.lservers[lserver]);
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return fd;
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}
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};
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dotty.releaselserver = function (lserver, fd, state) {
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if (state == 'bad' | dotty.lservers.inuse[fd].count > 40) {
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closeio (fd, 'kill');
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remove (fd, dotty.lservers.inuse);
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return;
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}
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dotty.lservers[lserver][fd] = dotty.lservers.inuse[fd];
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remove (fd, dotty.lservers.inuse);
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};
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dotty.protogt.startlayout = function (gt) {
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local lpt, fd;
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if (gt.layoutpending >= 1) {
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lpt = dotty.layoutpending[gt.gtid];
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if (gt.layoutmode == 'async')
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monitor ('off', lpt.fd);
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dotty.releaselserver (gt.lserver, lpt.fd, 'bad');
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remove (gt.gtid, dotty.layoutpending);
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gt.layoutpending = 0;
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gt.haveinput = 0;
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dotty.popbusy (gt, gt.views);
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}
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if (~((fd = dotty.grablserver (gt.lserver)) >= 0))
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return null;
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dotty.pushbusy (gt, gt.views);
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writegraph (fd, gt.graph, 1);
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gt.layoutpending = 1;
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dotty.layoutpending[gt.gtid] = [
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'fd' = fd;
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'gtid' = gt.gtid;
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];
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if (gt.layoutmode == 'async')
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monitor ('on', fd);
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return 1;
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};
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dotty.protogt.finishlayout = function (gt) {
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local graph, lpt, fd;
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if (~(gt.layoutpending >= 1)) {
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dotty.message (0, concat ('no layout pending for graph ', gt.gtid));
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return null;
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}
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lpt = dotty.layoutpending[gt.gtid];
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if (~(graph = readgraph (lpt.fd))) {
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if (gt.layoutmode == 'async')
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monitor ('off', lpt.fd);
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dotty.releaselserver (gt.lserver, lpt.fd, 'bad');
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if (gt.layoutpending == 2) {
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dotty.message (0, concat ('giving up on ', gt.lserver));
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if ((fd = openio ('file', 'dottybug.dot', 'w+')) >= 0) {
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writegraph (fd, gt.graph, 0);
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closeio (fd);
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dotty.message (0,
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concat ('graph that causes ', gt.lserver));
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dotty.message (0,
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'to fail has been saved in file dottybug.dot');
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dotty.message (0,
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'please fill out a bug report at http://www.research.att.com/~erg/graphviz/bugform.html');
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}
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dotty.popbusy (gt, gt.views);
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gt.layoutpending = 0;
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gt.haveinput = 0;
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return 1;
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}
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dotty.message (1,
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concat ('lost connection to ', gt.lserver, ', restarting...'));
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lpt.fd = dotty.grablserver (gt.lserver);
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writegraph (lpt.fd, gt.graph, 1);
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if (gt.layoutmode == 'async')
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monitor ('on', lpt.fd);
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gt.layoutpending = 2;
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gt.haveinput = 0;
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return null;
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}
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if (gt.layoutmode == 'async')
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monitor ('off', lpt.fd);
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dotty.releaselserver (gt.lserver, lpt.fd, null);
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remove (gt.gtid, dotty.layoutpending);
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gt.layoutpending = 0;
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gt.haveinput = 0;
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gt.unpacklayout (gt, graph);
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dotty.popbusy (gt, gt.views);
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return 1;
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};
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dotty.protogt.cancellayout = function (gt) {
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local lpt, vid;
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if (gt.layoutpending >= 1) {
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lpt = dotty.layoutpending[gt.gtid];
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if (gt.layoutmode == 'async')
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monitor ('off', lpt.fd);
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dotty.releaselserver (gt.lserver, lpt.fd, 'bad');
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remove (gt.gtid, dotty.layoutpending);
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gt.layoutpending = 0;
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gt.haveinput = 0;
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dotty.popbusy (gt, gt.views);
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}
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};
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dotty.protogt.unpacklayout = function (gt, graph2) {
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local graph, gid, sgraph1, sgraph2, nid, node1, node2;
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local t1, t2, t3, n2, i, j, k, l, m, eid, edge1, edge2, points;
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local pa1, pa2, pb1, pb2, la, lb;
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graph = gt.graph;
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for (gid in graph2.graphdict) {
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if (~(sgraph1 = graph.graphs[graph.graphdict[gid]]))
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continue;
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sgraph2 = graph2.graphs[graph2.graphdict[gid]];
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if (sgraph2.graphattr.bb & sgraph2.graphattr.bb ~= '') {
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t1 = split (sgraph2.graphattr.bb, ',');
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sgraph1.rect = [
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0 = ['x' = ston (t1[0]); 'y' = ston (t1[1]);];
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1 = ['x' = ston (t1[2]); 'y' = ston (t1[3]);];
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];
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} else
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sgraph1.rect = [];
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if (sgraph2.graphattr.lp & sgraph2.graphattr.lp ~= '') {
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t1 = split (sgraph2.graphattr.lp, ',');
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sgraph1.lp = ['x' = ston (t1[0]); 'y' = ston (t1[1]);];
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} else
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sgraph1.lp = [];
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}
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for (nid in graph2.nodedict) {
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if (~(node1 = graph.nodes[graph.nodedict[nid]]))
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continue;
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node2 = graph2.nodes[graph2.nodedict[nid]];
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t1 = split (node2.attr.pos, ',');
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node1.pos = ['x' = ston (t1[0]); 'y' = ston (t1[1]);];
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node1.size.x = ston (node2.attr.width) * 72;
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node1.size.y = ston (node2.attr.height) * 72;
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if (node2.attr.rects)
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node1.fields = parsegraphlabel (node2.attr.label, node2.attr.rects);
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}
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for (eid in graph2.edges) {
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edge2 = graph2.edges[eid];
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if (edge2.attr.id) {
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if (~(edge1 = graph.edges[ston (edge2.attr.id)]))
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continue;
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} else if (graph == graph2)
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edge1 = edge2;
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if (edge2.attr.pos) {
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points = [];
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remove ('sp', edge1);
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remove ('ep', edge1);
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t2 = split (edge2.attr.pos, ';');
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for (k = 0; t2[k]; k = k + 1) {
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t3 = split (t2[k], ' ');
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n2 = tablesize (t3);
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j = 0;
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i = 0;
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t1 = split (t3[0], ',');
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while (t1[0] == 's' | t1[0] == 'e') {
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if (t1[0] == 's')
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edge1.sp = ['x' = ston (t1[1]); 'y' = ston (t1[2]);];
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else # (t1[0] == 'e')
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edge1.ep = ['x' = ston (t1[1]); 'y' = ston (t1[2]);];
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i = i + 1;
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t1 = split (t3[i], ',');
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}
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points[k][j] = ['x' = ston (t1[0]); 'y' = ston (t1[1]);];
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i = i + 1;
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j = j + 1;
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while (i < n2) {
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t1 = split (t3[i], ',');
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points[k][j] = ['x' = ston (t1[0]); 'y' = ston (t1[1]);];
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j = j + 1;
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i = i + 1;
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}
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}
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if (k > 1) { # concentrators
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l = k;
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while (l > 1) {
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la = tablesize (points[0]);
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pa1 = points[0][0];
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pa2 = points[0][la - 1];
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for (k = 1; points[k]; k = k + 1) {
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lb = tablesize (points[k]);
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pb1 = points[k][0];
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pb2 = points[k][lb - 1];
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if (pa1.x == pb2.x & pa1.y == pb2.y) {
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for (m = 1; m < la; m = m + 1) {
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points[k][lb] = points[0][m];
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lb = lb + 1;
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}
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points[0] = points[l - 1];
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remove (l - 1, points);
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break;
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} else if (pa2.x == pb1.x & pa2.y == pb1.y) {
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for (m = 1; m < lb; m = m + 1) {
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points[0][la] = points[k][m];
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la = la + 1;
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}
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points[k] = points[l - 1];
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remove (l - 1, points);
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break;
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}
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}
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if (points[l - 1]) {
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dotty.message (1, 'failed to match edge points');
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break;
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}
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l = l - 1;
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}
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}
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edge1.points = points[0];
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}
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if (edge2.attr.lp) {
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t1 = split (edge2.attr.lp, ',');
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edge1.lp = ['x' = ston (t1[0]); 'y' = ston (t1[1]);];
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}
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}
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t1 = split (graph2.graphattr.bb, ',');
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graph.rect[0].x = ston (t1[0]);
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graph.rect[0].y = ston (t1[1]);
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graph.rect[1].x = ston (t1[2]);
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graph.rect[1].y = ston (t1[3]);
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if (graph2.graphattr.lp & graph2.graphattr.lp ~= '') {
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t1 = split (graph2.graphattr.lp, ',');
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graph.lp = ['x' = ston (t1[0]); 'y' = ston (t1[1]);];
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} else
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graph.lp = [];
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if (gt.graph ~= graph2)
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return;
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# strip position and size info from the attributes
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for (gid in graph2.graphdict) {
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sgraph2 = graph2.graphs[graph2.graphdict[gid]];
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if (sgraph2.graphattr.bb)
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remove ('bb', sgraph2.graphattr);
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}
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for (nid in graph2.nodedict) {
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node2 = graph2.nodes[graph2.nodedict[nid]];
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if (node2.attr.rects)
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remove ('rects', node2.attr);
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remove ('pos', node2.attr);
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remove ('width', node2.attr);
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remove ('height', node2.attr);
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}
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for (eid in graph2.edges) {
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edge2 = graph2.edges[eid];
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if (edge2.attr.pos)
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remove ('pos', edge2.attr);
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if (edge2.attr.lp)
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remove ('lp', edge2.attr);
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}
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remove ('bb', graph2.graphattr);
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if (graph2.graphattr.lp)
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remove ('lp', graph2.graphattr);
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};
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