My examples must have been overly simplistic, since I don't even know what TkReactor
is.
Truthfully, I don't know what the issues are as to what should be problematic about it
so
maybe I haven't really done it after all :-) However, I do have code that uses fnorb to
make CORBA calls to a server and display that data using pygtk.
I've attached an example of client code that I wrote. This code is connecting to
an Orbix Server that is written in C++. Maybe there's something that I should be
doing that I'm not. Note that this isn't production quality code - only proof of
concept
so I'm sure there are bugs. The app is getting and displaying time series data for
fixed income securities. All the fnorb stuff is in Hist.py. The main gtk code is in
T1b.py.
I'd be interested in better ways to accomplish what I'm doing here.
--
Bill Allen
#!/usr/bin/env python
# Fnorb modules.
from Fnorb.orb import CORBA, BOA
# Stubs generated by 'fnidl'.
import PA
class Hist:
def __init__(self, orb):
self.orb = orb
stringified_ior = open('SecurityHistServer.ior').read()
self.server = self.orb.string_to_object(stringified_ior)
if self.server is None:
raise 'Nil object reference!'
def getAttributes(self):
return self.server.availableAttributes()
def getData(self, fid, attrib, start, end):
dvpl = self.server.getHistData(fid, attrib, start, end, PA.Daily)
return dvpl
#!/usr/bin/env python
import sys
from string import atol
from gtk import *
import GtkExtra
from PADate import *
from Hist import *
class HistDisplay(GtkWindow):
def __init__(self, hist, quitfunc='hide'):
GtkWindow.__init__(self, WINDOW_TOPLEVEL)
self.hist = hist
self.quitfunc = quitfunc
self.clist = GtkCList(2, ["Date", "Value"])
def quit(win, event=None, _self=self):
if (_self.quitfunc == 'quit'):
mainquit()
else:
_self.hide()
self.connect("destroy", quit)
self.connect("delete_event", quit)
self.set_title("clist")
self.set_usize(425, 425)
box1 = GtkVBox()
self.add(box1)
box1.show()
box2 = GtkHBox(spacing=10)
box2.set_border_width(10)
box1.pack_start(box2, expand=FALSE, fill=FALSE)
box2.show()
self.clist.set_column_width(0, 100)
for i in range(1, 2):
self.clist.set_column_width(i, 80)
s = [0]
def select_clist(_clist, r, c, event, selected=s):
selected[0] = r
button = GtkButton("Go")
box2.pack_start(button)
def do_clist(_button, clist=button):
self = clist.my_self
fid = self.entry.get_text()
self.dohist(fid)
button.connect("clicked", do_clist)
button.my_self = self
button.show()
self.entry = GtkEntry()
self.entry.set_text("")
box2.pack_start(self.entry)
self.entry.show()
self.attribMenu = GtkMenu()
group = None
attributes = hist.getAttributes()
for item in attributes:
menuitem = GtkRadioMenuItem(group, item)
menuitem.set_data("Attribute", item)
self.attribMenu.append(menuitem)
menuitem.show()
optionmenu = GtkOptionMenu()
optionmenu.set_menu(self.attribMenu)
box2.pack_start(optionmenu)
optionmenu.show()
box2 = GtkHBox(spacing=10)
box2.set_border_width(10)
box1.pack_start(box2, expand=FALSE, fill=FALSE)
box2.show()
self.startdate = GtkEntry()
self.startdate.set_text("19990101")
box2.pack_start(self.startdate)
self.startdate.show()
button = GtkButton("s")
box2.pack_start(button)
def do_s(_button, clist=button):
self = clist.my_self
d = get_calendar_date(atol(self.startdate.get_text()))
self.startdate.set_text('%ld' % d)
button.connect("clicked", do_s)
button.my_self = self
button.show()
self.enddate = GtkEntry()
self.enddate.set_text("19990331")
box2.pack_start(self.enddate)
self.enddate.show()
button = GtkButton("e")
box2.pack_start(button)
def do_e(_button, clist=button):
self = clist.my_self
d = get_calendar_date(atol(self.enddate.get_text()))
self.enddate.set_text('%ld' % d)
button.connect("clicked", do_e)
button.my_self = self
button.show()
box2 = GtkVBox(spacing=10)
box2.set_border_width(10)
box1.pack_start(box2)
box2.show()
self.clist.set_row_height(20)
self.clist.connect("select_row", select_clist)
self.clist.set_column_width(0, 100)
for i in range(1, 2):
self.clist.set_column_width(0, 80)
self.clist.set_selection_mode(SELECTION_BROWSE)
self.clist.set_column_justification(1, JUSTIFY_RIGHT)
self.clist.set_column_justification(2, JUSTIFY_CENTER)
self.clist.set_border_width(5)
self.curve = GtkCurve()
box2.pack_start(self.curve)
self.curve.set_sensitive(FALSE)
self.curve.show()
swin = GtkScrolledWindow()
swin.set_policy(POLICY_AUTOMATIC, POLICY_AUTOMATIC)
box2.pack_start(swin)
swin.show()
swin.add(self.clist)
self.clist.show()
separator = GtkHSeparator()
box1.pack_start(separator, expand=FALSE)
separator.show()
box2 = GtkVBox(spacing=10)
box2.set_border_width(10)
box1.pack_start(box2, expand=FALSE)
box2.show()
button = GtkButton("close")
button.connect("clicked", quit)
box2.pack_start(button)
button.set_flags(CAN_DEFAULT)
button.grab_default()
button.show()
#self.show()
def quit(self):
self.hide()
def dohist(self, fid):
self.clist.clear()
self.entry.set_text(fid)
attrib = self.attribMenu.get_active().get_data("Attribute")
start = atol(self.startdate.get_text())
end = atol(self.enddate.get_text())
dvpl = self.hist.getData(fid, attrib, start, end)
text = map(lambda i: "Column "+str(i), range(2))
vector = [];
miny = 999999
maxy = 0
for i in range(len(dvpl)):
text[0] = str(dvpl[i].date)
val = dvpl[i].value
text[1] = '%6.2f' % val
self.clist.append(text)
vector.append(val)
if miny > val: miny = val
if maxy < val: maxy = val
self.curve.set_range(0, len(vector), miny, maxy)
self.curve.set_vector(vector)
def main(args):
orb = CORBA.ORB_init(argv, CORBA.ORB_ID)
hist = Hist(orb)
histDisplay = HistDisplay(hist)
histDisplay.dohist("C912810EJ")
histDisplay.show()
mainloop()
return 0
#############################################################################
if __name__ == '__main__':
# Do it!
sys.exit(main(sys.argv))
#############################################################################
#!/usr/bin/env python
from gtk import *
from time import sleep
def get_calendar_date(initialdate):
window = GtkWindow(WINDOW_TOPLEVEL)
window.connect("destroy", mainquit)
window.set_border_width(10)
box2 = GtkVBox(spacing=10)
box2.set_border_width(10)
window.add(box2)
box2.show()
cal = GtkCalendar()
y = initialdate / 10000
m = (initialdate % 10000) / 100 - 1
d = initialdate % 100
cal.select_month(m, y)
cal.select_day(d)
box2.pack_start(cal)
cal.show()
cal.waiting = TRUE
def done(button, c = cal):
c.waiting = FALSE
button = GtkButton("OK")
button.connect("clicked", done)
box2.pack_start(button)
button.show()
window.show()
while cal.waiting:
mainiteration(FALSE)
d = cal.get_date()
window.hide()
return d[0] * 10000 + (d[1] + 1) * 100 + d[2]
