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Speed up printer listing in the print dialog

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Use shorter timeout for connection testing to avoid A 3-6 second
delay before the printers appear. Bug 594643
This commit is contained in:
Marek Kasik 2009-09-30 12:40:11 -04:00 committed by Matthias Clasen
parent 14f3006d12
commit dd52987d1f
3 changed files with 45 additions and 8 deletions
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50
modules/printbackends/cups/gtkprintbackendcups.c
View File

@ -112,6 +112,7 @@ struct _GtkPrintBackendCups
guint list_printers_poll;
guint list_printers_pending : 1;
gint list_printers_attempts;
guint got_default_printer : 1;
guint default_printer_poll;
GtkCupsConnectionTest *cups_connection_test;
@ -586,6 +587,7 @@ gtk_print_backend_cups_init (GtkPrintBackendCups *backend_cups)
backend_cups->list_printers_poll = FALSE;
backend_cups->got_default_printer = FALSE;
backend_cups->list_printers_pending = FALSE;
backend_cups->list_printers_attempts = 0;
backend_cups->requests = NULL;
backend_cups->auth = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, overwrite_and_free);
@ -641,6 +643,7 @@ gtk_print_backend_cups_dispose (GObject *object)
if (backend_cups->list_printers_poll > 0)
g_source_remove (backend_cups->list_printers_poll);
backend_cups->list_printers_poll = 0;
backend_cups->list_printers_attempts = 0;
if (backend_cups->default_printer_poll > 0)
g_source_remove (backend_cups->default_printer_poll);
@ -1578,6 +1581,7 @@ cups_request_printer_list_cb (GtkPrintBackendCups *cups_backend,
if (cups_backend->list_printers_poll > 0)
g_source_remove (cups_backend->list_printers_poll);
cups_backend->list_printers_poll = 0;
cups_backend->list_printers_attempts = 0;
}
goto done;
@ -2110,8 +2114,23 @@ cups_request_printer_list (GtkPrintBackendCups *cups_backend)
state = gtk_cups_connection_test_get_state (cups_backend->cups_connection_test);
update_backend_status (cups_backend, state);
if (cups_backend->list_printers_attempts == 60)
{
cups_backend->list_printers_attempts = -1;
if (cups_backend->list_printers_poll > 0)
g_source_remove (cups_backend->list_printers_poll);
cups_backend->list_printers_poll = gdk_threads_add_timeout (200,
(GSourceFunc) cups_request_printer_list,
cups_backend);
}
else if (cups_backend->list_printers_attempts != -1)
cups_backend->list_printers_attempts++;
if (state == GTK_CUPS_CONNECTION_IN_PROGRESS || state == GTK_CUPS_CONNECTION_NOT_AVAILABLE)
return TRUE;
else
if (cups_backend->list_printers_attempts > 0)
cups_backend->list_printers_attempts = 60;
cups_backend->list_printers_pending = TRUE;
@ -2149,9 +2168,9 @@ cups_get_printer_list (GtkPrintBackend *backend)
if (cups_backend->list_printers_poll == 0)
{
if (cups_request_printer_list (cups_backend))
cups_backend->list_printers_poll = gdk_threads_add_timeout_seconds (3,
(GSourceFunc) cups_request_printer_list,
backend);
cups_backend->list_printers_poll = gdk_threads_add_timeout (50,
(GSourceFunc) cups_request_printer_list,
backend);
}
}
@ -2247,11 +2266,26 @@ cups_request_ppd (GtkPrinter *printer)
state = gtk_cups_connection_test_get_state (cups_printer->remote_cups_connection_test);
if (state == GTK_CUPS_CONNECTION_IN_PROGRESS)
return TRUE;
{
if (cups_printer->get_remote_ppd_attempts == 60)
{
cups_printer->get_remote_ppd_attempts = -1;
if (cups_printer->get_remote_ppd_poll > 0)
g_source_remove (cups_printer->get_remote_ppd_poll);
cups_printer->get_remote_ppd_poll = gdk_threads_add_timeout (200,
(GSourceFunc) cups_request_ppd,
printer);
}
else if (cups_printer->get_remote_ppd_attempts != -1)
cups_printer->get_remote_ppd_attempts++;
return TRUE;
}
gtk_cups_connection_test_free (cups_printer->remote_cups_connection_test);
cups_printer->remote_cups_connection_test = NULL;
cups_printer->get_remote_ppd_poll = 0;
cups_printer->get_remote_ppd_attempts = 0;
if (state == GTK_CUPS_CONNECTION_NOT_AVAILABLE)
{
@ -2501,9 +2535,9 @@ cups_get_default_printer (GtkPrintBackendCups *backend)
if (cups_backend->default_printer_poll == 0)
{
if (cups_request_default_printer (cups_backend))
cups_backend->default_printer_poll = gdk_threads_add_timeout (500,
(GSourceFunc) cups_request_default_printer,
backend);
cups_backend->default_printer_poll = gdk_threads_add_timeout (200,
(GSourceFunc) cups_request_default_printer,
backend);
}
}
@ -2634,7 +2668,7 @@ cups_printer_request_details (GtkPrinter *printer)
cups_printer->remote_cups_connection_test = gtk_cups_connection_test_new (cups_printer->hostname);
if (cups_request_ppd (printer))
cups_printer->get_remote_ppd_poll = gdk_threads_add_timeout (200,
cups_printer->get_remote_ppd_poll = gdk_threads_add_timeout (50,
(GSourceFunc) cups_request_ppd,
printer);
}

2
modules/printbackends/cups/gtkprintercups.c
View File

@ -79,6 +79,7 @@ gtk_printer_cups_init (GtkPrinterCups *printer)
printer->default_cover_after = NULL;
printer->remote = FALSE;
printer->get_remote_ppd_poll = 0;
printer->get_remote_ppd_attempts = 0;
printer->remote_cups_connection_test = NULL;
printer->auth_info_required = NULL;
}
@ -105,6 +106,7 @@ gtk_printer_cups_finalize (GObject *object)
if (printer->get_remote_ppd_poll > 0)
g_source_remove (printer->get_remote_ppd_poll);
printer->get_remote_ppd_attempts = 0;
gtk_cups_connection_test_free (printer->remote_cups_connection_test);

1
modules/printbackends/cups/gtkprintercups.h
View File

@ -60,6 +60,7 @@ struct _GtkPrinterCups
gboolean remote;
guint get_remote_ppd_poll;
gint get_remote_ppd_attempts;
GtkCupsConnectionTest *remote_cups_connection_test;
};