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birdvisu/annotations/layout.py

@@ -273,11 +273,12 @@ class HighlightSPDAG(StyleAnnotator):
 	def __init__(self, vtxid):
 		self.vtxid = vtxid
 	def annotate(self, topo):
-		spd_annot = AnnotatorID(ShortestPathTree, vtxid)
+		spd_annot = AnnotatorID(analysis.ShortestPathTree, (self.vtxid, 'current'))
 		topo.run_annotator(spd_annot)
 		annotation =  topo.annotations[spd_annot]
 		result = Annotation()
-		result.for_edge = {e: {'highlight_colour': (200, 200, 0, 128)} for e in annotation.for_edge.keys()}
+		result.for_edge = {e: {'highlight_colour': (200, 0, 200, 128)} for e in annotation.for_edge.keys()}
+		result.for_vertex[self.vtxid] = {'highlight_colour': (0, 200, 0, 128)}
 		return result
 
 class HighlightShortestPath(StyleAnnotator):
@@ -285,8 +286,20 @@ class HighlightShortestPath(StyleAnnotator):
 	def __init__(self, param):
 		self.start, self.end = param
 	def annotate(self, topo):
-		spd_annot = AnnotatorID(ShortestPathTree, vtxid)
+		spd_annot = AnnotatorID(analysis.ShortestPathTree, (self.start, 'current'))
 		topo.run_annotator(spd_annot)
 		annotation = topo.annotations[spd_annot]
 		result = Annotation()
-		...
+		# Highlight start and end
+		result.for_vertex[self.start] = {'highlight_colour': (0, 200, 0, 128)}
+		result.for_vertex[self.end] = {'highlight_colour': (200, 0, 100, 128)}
+		# Find the path by following backward edges of the shortest path DAG, BFS style.
+		queue = [self.end]
+		while len(queue) > 0:
+			v = queue.pop(0)
+			if v == self.start: continue # no looking further.
+			previous_edges = topo.topology.vertices[v].incoming_edges & annotation.for_edge.keys()
+			result.for_edge |= {e: {'highlight_colour': (200, 0, 200, 128), 'width': 5} for e in previous_edges}
+			queue.extend(e.source for e in previous_edges)
+			# It is oriented, so there is no need to mark visited vertices.
+		return result

birdvisu/graphics_items.py

@@ -1,6 +1,6 @@
-from PySide6.QtWidgets import QGraphicsItem, QGraphicsRectItem, QGraphicsSimpleTextItem, QGraphicsLineItem
+from PySide6.QtWidgets import QGraphicsItem, QGraphicsRectItem, QGraphicsSimpleTextItem, QGraphicsLineItem, QMenu
 from PySide6.QtCore import QLineF, Qt
-from PySide6.QtGui import QColor, QBrush, QPen
+from PySide6.QtGui import QColor, QBrush, QPen, QAction
 
 def _rid_to_str(rid):
 	from ipaddress import IPv4Address
@@ -72,6 +72,21 @@ class RouterGraphicsItem(QGraphicsItem):
 			self.window.graphicsitems[edge].update_line()
 		super().mouseMoveEvent(evt)
 	
+	def contextMenuEvent(self, evt):
+		menu = QMenu(self.window)
+		tree_act = QAction('Show routing tree', self.window)
+		menu.addAction(tree_act)
+		path_act = object()
+		if self.window.mode == self.window.Mode.ShortestPathDAG:
+			path_act = QAction('Show path to here', self.window)
+			menu.addAction(path_act)
+
+		action = menu.exec(evt.screenPos())
+		if action == tree_act:
+			self.window.dagMode(self.vertex_id)
+		if action == path_act:
+			self.window.shortestPathMode(self.vertex_id)
+
 	# Admit we are basically only a wrapper of the icon.
 	def boundingRect(self):
 		return self.icon.boundingRect()

poor_mans_visualisation.py

@@ -87,10 +87,13 @@ class MainWindow(QtWidgets.QMainWindow):
 	def create_menus(self):
 		print('Creating menus…')
 		self.menubar = self.menuBar()
-		mode_menu = self.menubar.addMenu('&Mode')
-		short_path_act = QtGui.QAction("Sh. path &DAG", self)
-		short_path_act.triggered.connect(self.shortestPathMode)
-		mode_menu.addAction(short_path_act)
+		mode_menu = self.menubar.addMenu('&Highlight')
+		edge_weight_act = QtGui.QAction("Edge costs", self)
+		edge_weight_act.triggered.connect(self.edgeWeightMode)
+		mode_menu.addAction(edge_weight_act)
+		topodiff_act = QtGui.QAction("Topology differences", self)
+		topodiff_act.triggered.connect(self.topoDiffMode)
+		mode_menu.addAction(topodiff_act)
 
 		# Hack!
 		autoload_act = QtGui.QAction("&Load automatically", self)
@@ -149,7 +152,7 @@ class MainWindow(QtWidgets.QMainWindow):
 
 	@Slot()
 	def load_positions(self):
-		filename = QtWidgets.QFileDialog.getOpenFileName(self, 'Open vertex positions', '.', 'OSPF files(*.visu);;All files(*)')[0]
+		filename = QtWidgets.QFileDialog.getOpenFileName(self, 'Open vertex positions', '.', 'OSPF visualisation files (*.visu);;All files(*)')[0]
 		if filename == '': return # Do nothing
 		self.positions_from_file(filename)
 
@@ -190,15 +193,18 @@ class MainWindow(QtWidgets.QMainWindow):
 			if oe.cost == 0 or oe.cost > e.cost:
 				for_edge[(a,b)] = (e, sty)
 		# Actually apply the style:
-		for v, sty in for_vertex.items():
+		for v  in self.visu_graph[0].keys():
+			sty = for_vertex.get(v, {})
 			self.graphicsitems[v].apply_style(sty)
-		for e, tup in for_edge.items():
-			self.graphicsitems[e].apply_style(tup[1])
+		for e in self.visu_graph[1]:
+			sty = for_edge[e][1] if e in for_edge else {}
+			self.graphicsitems[e].apply_style(sty)
 
 	@Slot()
-	def dagMode(self):
+	def dagMode(self, vtxid):
 		self.mode = self.Mode.ShortestPathDAG
-		self.highlighter = HighlightSPDAG(...)
+		self.highlighter = HighlightSPDAG(vtxid)
+		self.start_vertex = vtxid
 		self.apply_styles()
 
 	@Slot()
@@ -214,9 +220,11 @@ class MainWindow(QtWidgets.QMainWindow):
 		self.apply_styles()
 	
 	@Slot()
-	def shortestPathMode(self):
+	def shortestPathMode(self, vtxid):
 		self.mode = self.Mode.ShortestPath
-		...
+		self.end_vertex = vtxid
+		self.highlighter = HighlightShortestPath((self.start_vertex, self.end_vertex))
+		self.apply_styles()
 	
 	@Slot()
 	def openRefTopology(self):