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- Speed improvement when fetching devices.

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This commit is contained in:
Tim Waugh 2009-09-03 16:53:27 +00:00
parent 2b4fad8d01
commit da1b9d7e4b
2 changed files with 501 additions and 0 deletions
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498
system-config-printer-get-devices.patch Normal file
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@ -0,0 +1,498 @@
diff -up system-config-printer-1.1.12/cupshelpers/cupshelpers.py.get-devices system-config-printer-1.1.12/cupshelpers/cupshelpers.py
--- system-config-printer-1.1.12/cupshelpers/cupshelpers.py.get-devices 2009-08-25 15:01:40.000000000 +0100
+++ system-config-printer-1.1.12/cupshelpers/cupshelpers.py 2009-09-03 17:44:32.610304039 +0100
@@ -541,7 +541,7 @@ class Device:
return result
-def getDevices(connection):
+def getDevices(connection, **kw):
"""
Obtain a list of available CUPS devices.
@@ -550,7 +550,7 @@ def getDevices(connection):
@returns: a list of L{Device} objects
@raise cups.IPPError: IPP Error
"""
- devices = connection.getDevices()
+ devices = connection.getDevices(**kw)
for uri, data in devices.iteritems():
device = Device(uri, **data)
devices[uri] = device
diff -up system-config-printer-1.1.12/cupspk.py.get-devices system-config-printer-1.1.12/cupspk.py
--- system-config-printer-1.1.12/cupspk.py.get-devices 2009-09-03 17:44:32.513304908 +0100
+++ system-config-printer-1.1.12/cupspk.py 2009-09-03 17:44:32.612310211 +0100
@@ -311,12 +311,13 @@ class Connection:
def getDevices(self, *args, **kwds):
use_pycups = False
- timeout = 0
+ limit = 0
include_schemes = ''
exclude_schemes = ''
+ timeout = 0
- if len(args) == 3:
- (use_pycups, timeout, include_schemes, exclude_schemes) = self._args_to_tuple([int, str, str], *args)
+ if len(args) == 4:
+ (use_pycups, limit, include_schemes, exclude_schemes, timeout) = self._args_to_tuple([int, str, str, int], *args)
else:
if kwds.has_key('timeout'):
timeout = kwds['timeout']
@@ -327,6 +328,17 @@ class Connection:
if kwds.has_key('exclude_schemes'):
exclude_schemes = kwds['exclude_schemes']
+ # Convert from list to string
+ if len (include_schemes) > 0:
+ include_schemes = reduce (lambda x, y: x + "," + y, include_schemes)
+ else:
+ include_schemes = ""
+
+ if len (exclude_schemes) > 0:
+ exclude_schemes = reduce (lambda x, y: x + "," + y, exclude_schemes)
+ else:
+ exclude_schemes = ""
+
pk_args = (timeout, include_schemes, exclude_schemes)
result = self._call_with_pk_and_fallback(use_pycups,
diff -up system-config-printer-1.1.12/gtkspinner.py.get-devices system-config-printer-1.1.12/gtkspinner.py
--- system-config-printer-1.1.12/gtkspinner.py.get-devices 2009-08-25 15:01:40.000000000 +0100
+++ system-config-printer-1.1.12/gtkspinner.py 2009-09-03 17:44:32.614305510 +0100
@@ -65,7 +65,7 @@ class Spinner:
def _next_frame (self):
n = self._current_frame + 1
if n >= self.n_frames:
- n = 0
+ n = 1
self._set_frame (n)
return True
diff -up system-config-printer-1.1.12/system-config-printer.py.get-devices system-config-printer-1.1.12/system-config-printer.py
--- system-config-printer-1.1.12/system-config-printer.py.get-devices 2009-09-03 17:44:32.601305285 +0100
+++ system-config-printer-1.1.12/system-config-printer.py 2009-09-03 17:45:23.411307659 +0100
@@ -3681,6 +3681,7 @@ class NewPrinterGUI(GtkGUI):
self.ntbkNPDownloadableDriverProperties.set_show_tabs(False)
self.spinner = gtkspinner.Spinner (self.imgProcessWorking)
+ self.spinner_count = 0
# Set up OpenPrinting widgets.
self.openprinting = cupshelpers.openprinting.OpenPrinting ()
@@ -3716,6 +3717,7 @@ class NewPrinterGUI(GtkGUI):
slct.set_select_function (self.device_select_function)
self.tvNPDevices.set_row_separator_func (self.device_row_separator_fn)
self.tvNPDevices.connect ("row-activated", self.device_row_activated)
+ self.tvNPDevices.connect ("row-expanded", self.device_row_expanded)
# Devices expander
self.expNPDeviceURIs.connect ("notify::expanded",
@@ -3765,6 +3767,19 @@ class NewPrinterGUI(GtkGUI):
ppd_filter.add_pattern("*")
self.filechooserPPD.add_filter(ppd_filter)
+ def inc_spinner_task (self):
+ if self.spinner_count == 0:
+ self.imgProcessWorking.show ()
+ self.spinner.start ()
+
+ self.spinner_count += 1
+
+ def dec_spinner_task (self):
+ self.spinner_count -= 1
+ if self.spinner_count == 0:
+ self.imgProcessWorking.hide ()
+ self.spinner.stop ()
+
def show_IPP_Error (self, exception, message):
return show_IPP_Error (exception, message, parent=self.NewPrinterWindow)
@@ -4611,45 +4626,48 @@ class NewPrinterGUI(GtkGUI):
self.btnNPForward.set_sensitive(
self.mainapp.checkNPName(new_text))
- def fetchDevices(self, parent=None):
+ def fetchDevices(self, parent=None, network=False):
debugprint ("fetchDevices")
- self.lblWait.set_markup ('<span weight="bold" size="larger">' +
- _('Searching') + '</span>\n\n' +
- _('Searching for printers'))
- if parent == None:
- parent = self.mainapp.PrintersWindow
- self.WaitWindow.set_transient_for (parent)
- self.WaitWindow.show_now ()
- self.busy (self.WaitWindow)
- if self.mainapp.cups._use_pk and config.WITH_POLKIT_1:
- def get_devices():
- c = authconn.Connection (host=self.mainapp.connect_server,
- parent=parent, lock=True)
- c._begin_operation (_("fetching device list"))
- ret = cupshelpers.getDevices (c)
- c._end_operation ()
- return ret
+ have_polkit_1 = self.mainapp.cups._use_pk and config.WITH_POLKIT_1
+ if not have_polkit_1:
+ if network:
+ return {}
- op = TimedOperation (get_devices)
- try:
- devices = op.run ()
- except (OperationCanceled, RuntimeError, cups.IPPError):
- self.WaitWindow.hide ()
- raise
- else:
- self.mainapp.cups._begin_operation (_("fetching device list"))
- try:
- devices = cupshelpers.getDevices (self.mainapp.cups)
- self.mainapp.cups._end_operation ()
- except cups.IPPError:
- self.mainapp.cups._end_operation ()
- self.WaitWindow.hide ()
- raise
+ network = True
- self.WaitWindow.hide ()
+ network_schemes = ["dnssd", "snmp"]
+ try:
+ c = authconn.Connection (host=self.mainapp.connect_server,
+ parent=parent, lock=True)
+ debugprint ("in get_devices: connected")
+ c._begin_operation (_("fetching device list"))
+ try:
+ if network:
+ debugprint ("Fetching network devices")
+ ret = cupshelpers.getDevices (c,
+ include_schemes=network_schemes)
+ else:
+ debugprint ("Fetching local devices")
+ ret = cupshelpers.getDevices (c,
+ exclude_schemes=network_schemes)
+ except TypeError:
+ # include_schemes/exclude_schemes requires pycups >= 1.9.46
+ if network:
+ ret = {}
+ else:
+ debugprint ("Fetching all devices")
+ debugprint ("in get_devices: getDevices")
+ ret = cupshelpers.getDevices (c)
+ except RuntimeError:
+ raise
+ except cups.IPPError:
+ c._end_operation ()
+ raise
+
+ c._end_operation ()
debugprint ("Got devices")
- return devices
+ return ret
def install_hplip_plugin(self, uri):
"""
@@ -4962,23 +4980,53 @@ class NewPrinterGUI(GtkGUI):
return (host, uri)
def fillDeviceTab(self, current_uri=None):
- try:
- devices = self.fetchDevices()
- except cups.IPPError, (e, msg):
- self.show_IPP_Error(e, msg)
- devices = {}
- except:
- nonfatalException()
- devices = {}
+ self.device_selected = -1
+ model = gtk.TreeStore (gobject.TYPE_STRING, # device-info
+ gobject.TYPE_PYOBJECT, # PhysicalDevice obj
+ gobject.TYPE_BOOLEAN) # Separator?
+ other = cupshelpers.Device('', **{'device-info' :_("Other")})
+ physother = PhysicalDevice (other)
+ self.devices = [physother]
+ model.append (None, row=[physother.get_info (), physother, False])
+ network_iter = model.append (None, row=[_("Network Printer"),
+ None,
+ False])
+ network_dict = { 'device-class': 'network',
+ 'device-info': _("Find Network Printer") }
+ network = cupshelpers.Device ('network', **network_dict)
+ find_nw_iter = model.append (network_iter,
+ row=[network_dict['device-info'],
+ PhysicalDevice (network), False])
+ model.insert_after (network_iter, find_nw_iter, row=['', None, True])
+ self.devices_find_nw_iter = find_nw_iter
+ self.devices_network_iter = network_iter
+ self.devices_network_fetched = False
+ self.tvNPDevices.set_model (model)
+ self.entNPTDevice.set_text ('')
+ self.expNPDeviceURIs.hide ()
+ self.inc_spinner_task ()
+
+ TimedOperation (self.fetchDevices,
+ kwargs={"network": False},
+ callback=self.got_devices,
+ context=current_uri)
+
+ def got_devices (self, result, exception, current_uri=None):
+ self.dec_spinner_task ()
+ if exception:
+ try:
+ raise exception
+ except:
+ nonfatalException()
+ return
+ devices = result
if current_uri:
if devices.has_key (current_uri):
current = devices.pop(current_uri)
- current.info += _(" (Current)")
elif devices.has_key (current_uri.replace (":9100", "")):
current_uri = current_uri.replace (":9100", "")
current = devices.pop(current_uri)
- current.info += _(" (Current)")
else:
current = cupshelpers.Device (current_uri)
current.info = "Current device"
@@ -5021,7 +5069,7 @@ class NewPrinterGUI(GtkGUI):
"hal", "beh",
"scsi", "http", "delete"),
devices)
- self.devices = []
+ newdevices = []
for device in devices:
physicaldevice = PhysicalDevice (device)
try:
@@ -5029,43 +5077,32 @@ class NewPrinterGUI(GtkGUI):
self.devices[i].add_device (device)
except ValueError:
self.devices.append (physicaldevice)
+ newdevices.append (physicaldevice)
self.devices.sort()
- other = cupshelpers.Device('', **{'device-info' :_("Other")})
- self.devices.append (PhysicalDevice (other))
- device_select_index = 0
if current_uri:
current_device = PhysicalDevice (current)
try:
i = self.devices.index (current_device)
self.devices[i].add_device (current)
- device_select_index = i
- devs = self.devices[i].get_devices ()
+ current_device = self.devices[i]
except ValueError:
- self.devices.insert(0, current_device)
+ self.devices.append (current_device)
+ newdevices.append (current_device)
+ else:
+ current_device = None
- model = gtk.TreeStore (gobject.TYPE_STRING, # device-info
- gobject.TYPE_PYOBJECT, # PhysicalDevice obj
- gobject.TYPE_BOOLEAN) # Separator?
- network_iter = model.append (None, row=[_("Network Printer"),
- None,
- False])
- network_dict = { 'device-class': 'network',
- 'device-info': _("Find Network Printer") }
- network = cupshelpers.Device ('network', **network_dict)
- find_nw_iter = model.append (network_iter,
- row=[network_dict['device-info'],
- PhysicalDevice (network), False])
- model.insert_after (network_iter, find_nw_iter, row=['', None, True])
- self.devices_find_nw_iter = find_nw_iter
- self.tvNPDevices.set_model (model)
+ model = self.tvNPDevices.get_model ()
- i = 0
- device_select_path = None
- for device in self.devices:
+ network_iter = self.devices_network_iter
+ find_nw_iter = self.devices_find_nw_iter
+ for device in newdevices:
devs = device.get_devices ()
network = devs[0].device_class == 'network'
- row=[device.get_info (), device, False]
+ info = device.get_info ()
+ if device == current_device:
+ info += _(" (Current)")
+ row=[info, device, False]
if network:
if devs[0].uri != devs[0].type:
# An actual network printer device. Put this at the top.
@@ -5075,24 +5112,31 @@ class NewPrinterGUI(GtkGUI):
# If this is the currently selected device we need
# to expand the "Network Printer" row so that it
# is visible.
- if device_select_index == i:
+ if device == current_device:
network_path = model.get_path (network_iter)
self.tvNPDevices.expand_row (network_path, False)
else:
# Just a method of finding one.
iter = model.append (network_iter, row=row)
else:
- iter = model.insert_before(None, network_iter, row=row)
+ # Insert this local device in order.
+ iter = model.get_iter_first ()
+ while iter != network_iter:
+ physdev = model.get_value (iter, 1)
+ if physdev > device:
+ break
+
+ iter = model.iter_next (iter)
+
+ iter = model.insert_before (None, iter, row=row)
- if device_select_index == i:
+ if device == current_device:
device_select_path = model.get_path (iter)
self.tvNPDevices.scroll_to_cell (device_select_path,
row_align=0.5)
column = self.tvNPDevices.get_column (0)
self.tvNPDevices.set_cursor (device_select_path, column)
- i += 1
-
connection_select_path = 0
if current_uri:
model = self.tvNPDeviceURIs.get_model ()
@@ -5106,6 +5150,9 @@ class NewPrinterGUI(GtkGUI):
iter = model.iter_next (iter)
i += 1
+ elif not self.device_selected:
+ column = self.tvNPDevices.get_column (0)
+ self.tvNPDevices.set_cursor ((0,), column)
column = self.tvNPDeviceURIs.get_column (0)
self.tvNPDeviceURIs.set_cursor (connection_select_path, column)
@@ -5551,6 +5598,13 @@ class NewPrinterGUI(GtkGUI):
else:
view.expand_row (path, False)
+ def device_row_expanded (self, view, iter, path):
+ if not self.devices_network_fetched:
+ self.devices_network_fetched = True
+ self.inc_spinner_task ()
+ TimedOperation (self.fetchDevices, kwargs={'network': True},
+ callback=self.got_devices)
+
def device_select_function (self, path):
"""
Allow this path to be selected as long as there
@@ -5565,6 +5619,7 @@ class NewPrinterGUI(GtkGUI):
return False
def on_tvNPDevices_cursor_changed(self, widget):
+ self.device_selected += 1
path, column = widget.get_cursor ()
if path == None:
return
@@ -5868,8 +5923,7 @@ class NewPrinterGUI(GtkGUI):
self.network_found = 0
self.lblNetworkFindSearching.show_all ()
finder = probe_printer.PrinterFinder ()
- self.imgProcessWorking.show ()
- self.spinner.start ()
+ self.inc_spinner_task ()
finder.find (host, found_callback)
def found_network_printer_callback (self, new_device):
@@ -5898,8 +5952,7 @@ class NewPrinterGUI(GtkGUI):
path = model.get_path (iter)
self.tvNPDevices.set_cursor (path)
else:
- self.imgProcessWorking.hide ()
- self.spinner.stop ()
+ self.dec_spinner_task ()
self.lblNetworkFindSearching.hide ()
self.entNPTNetworkHostname.set_sensitive (True)
self.btnNetworkFind.set_sensitive (True)
diff -up system-config-printer-1.1.12/timedops.py.get-devices system-config-printer-1.1.12/timedops.py
--- system-config-printer-1.1.12/timedops.py.get-devices 2009-08-25 15:01:41.000000000 +0100
+++ system-config-printer-1.1.12/timedops.py 2009-09-03 17:44:32.629302805 +0100
@@ -152,16 +152,24 @@ class OperationThread(threading.Thread):
class TimedOperation(Timed):
def __init__ (self, target, args=(), kwargs={}, parent=None,
- show_dialog=False):
+ show_dialog=False, callback=None, context=None):
self.wait_window = None
self.parent = parent
self.show_dialog = show_dialog
+ self.callback = callback
+ self.context = context
self.thread = OperationThread (target=target,
args=args,
kwargs=kwargs)
self.thread.start ()
+ if self.callback:
+ self.timeout_source = gobject.timeout_add (50, self._check_thread)
+
def run (self):
+ if self.callback:
+ raise RuntimeError
+
if self.show_dialog:
wait = gtk.MessageDialog (self.parent,
gtk.DIALOG_MODAL |
@@ -170,7 +178,7 @@ class TimedOperation(Timed):
gtk.BUTTONS_CANCEL,
_("Please wait"))
wait.connect ("delete_event", lambda *args: False)
- wait.connect ("response", self.wait_window_response)
+ wait.connect ("response", self._wait_window_response)
if self.parent:
wait.set_transient_for (self.parent)
@@ -178,7 +186,7 @@ class TimedOperation(Timed):
wait.format_secondary_text (_("Gathering information"))
wait.show_all ()
- self.timeout_source = gobject.timeout_add (50, self.check_thread)
+ self.timeout_source = gobject.timeout_add (50, self._check_thread)
gtk.main ()
gobject.source_remove (self.timeout_source)
if self.show_dialog:
@@ -186,20 +194,32 @@ class TimedOperation(Timed):
return self.thread.collect_result ()
- def check_thread (self):
+ def _check_thread (self):
if self.thread.isAlive ():
# Thread still running.
return True
- # Thread has finished. Stop the sub-loop.
- gtk.main_quit ()
+ # Thread has finished. Stop the sub-loop or trigger callback.
+ if self.callback:
+ if self.context != None:
+ self.callback (self.thread.result, self.thread.exception,
+ self.context)
+ else:
+ self.callback (self.thread.result, self.thread.exception)
+ else:
+ gtk.main_quit ()
+
return False
- def wait_window_response (self, dialog, response):
+ def _wait_window_response (self, dialog, response):
if response == gtk.RESPONSE_CANCEL:
self.cancel ()
def cancel (self):
debugprint ("Command canceled")
- gtk.main_quit ()
+ if self.callback:
+ self.callback = None
+ else:
+ gtk.main_quit ()
+
return False

3
system-config-printer.spec
View File

@ -21,6 +21,7 @@ Patch4: system-config-printer-polkit-1.patch
Patch5: system-config-printer-proxy-auth.patch
Patch6: system-config-printer-ppdippstr.patch
Patch7: system-config-printer-raw-device-change.patch
Patch8: system-config-printer-get-devices.patch
BuildRequires: cups-devel >= 1.2
BuildRequires: python-devel >= 2.4
@ -89,6 +90,7 @@ printers.
%patch5 -p1 -b .proxy-auth
%patch6 -p1 -b .ppdippstr
%patch7 -p1 -b .raw-device-change
%patch8 -p1 -b .get-devices
%build
aclocal
@ -204,6 +206,7 @@ exit 0
%changelog
* Thu Sep 3 2009 Tim Waugh <twaugh@redhat.com> 1.1.12-7
- Speed improvement when fetching devices.
- Allow raw devices to be changed.
* Fri Aug 28 2009 Tim Waugh <twaugh@redhat.com> 1.1.12-6