def loadCurvesForSong(self):
"""
current curves will track song's curves.
This fires 'add_curve' dispatcher events to announce the new curves.
"""
log.info('loadCurvesForSong')
dispatcher.send("clear_curves")
self.curveResources.clear()
self.markers = Markers(uri=None, pointsStorage='file')
self.currentSong = self.graph.value(self.session, L9['currentSong'])
if self.currentSong is None:
return
for uri in sorted(self.graph.objects(self.currentSong, L9['curve'])):
try:
cr = self.curveResources[uri] = CurveResource(self.graph, uri)
cr.loadCurve()
curvename = self.graph.label(uri)
if not curvename:
raise ValueError("curve %r has no label" % uri)
dispatcher.send("add_curve", sender=self,
uri=uri, label=curvename, curve=cr.curve)
except Exception as e:
log.error("loading %s failed: %s", uri, e)
basename = os.path.join(
showconfig.curvesDir(),
showconfig.songFilenameFromURI(self.currentSong))
try:
self.markers.load("%s.markers" % basename)
except IOError:
print "no marker file found"
def savekey(song, subterms, curveset):
print "saving", song
g = createSubtermGraph(song, subterms)
g.serialize(graphPathForSubterms(song), format="nt")
curveset.save(basename=os.path.join(showconfig.curvesDir(),
showconfig.songFilenameFromURI(song)))
print "saved"
def pointsFromGraph(self):
pts = self.graph.value(self.uri, L9['points'])
if pts is not None:
self.curve.set_from_string(pts)
else:
diskPts = self.graph.value(self.uri, L9['pointsFile'])
if diskPts is not None:
self.curve.load(os.path.join(showconfig.curvesDir(), diskPts))
else:
log.warn("curve %s has no points", self.uri)
self.watchCurvePointChanges()
def save(self):
"""writes a file for each curve with a name
like basename-curvename, or saves them to the rdf graph"""
basename=os.path.join(
showconfig.curvesDir(),
showconfig.songFilenameFromURI(self.currentSong))
patches = []
for cr in self.curveResources.values():
patches.extend(cr.getSavePatches())
self.markers.save("%s.markers" % basename)
# this will cause reloads that will rebuild our curve list
for p in patches:
self.graph.patch(p)