In avahi_request_printer_list() a new connection to the DBus system bus
is started asynchronously, but it's not cancellable and it's not taking
any reference of the GtkPrintBackendCups. This means that when the
callback is called, the object might have been destroyed already. We can
just pass the cancellable created and check for the cancelled error in
the callback before trying to use the GtkPrintBackendCups. The code to
cancel avahi operations and to unsibscribe from the DBus signals has
been moved from finalize to dispose to make sure it happens as soon as
possible.
https://bugzilla.gnome.org/show_bug.cgi?id=696553
If GtkPrintBackendCups is finalized and cups_get_printer_list hasn't
been called, g_object_unref is called for the GDBusConnection pointer
that is NULL. Use g_clear_object() instead.
https://bugzilla.gnome.org/show_bug.cgi?id=696546
Converts usage of Avahi API to DBus calls. This change allows
us to remove dependency on avahi-gobject and avoids of possible
circular dependency.
Lists printers if Gtk+ is compiled with CUPS 1.6 or newer.
Show printers advertised by avahi on local network. CUPS
backend now looks for _ipps._tcp and _ipp._tcp services
offered by avahi. If it finds such a service (printer)
it requests its attributes through IPP_GET_PRINTER_ATTRIBUTES
ipp request and adds it to the list of printers. Such printer
behaves like a remote printer then.
If an avahi printer is a default printer then it is considered
default by the backend only if there is no local or remote
default printer.
This functionality is enabled when building Gtk+ with CUPS 1.6
or later because it replaces browsing protocol removed in CUPS 1.6.
https://bugzilla.gnome.org/show_bug.cgi?id=688956
gtk+ was trying to display already freed strings, leaking memory,
...I noticed this because I was getting weird blinking characters
as the status of my cups printers, and valgrind confirmed something
was wrong.
https://bugzilla.gnome.org/show_bug.cgi?id=683072
These are just wrappers for the functions, and we want to
deprecate them. Stopping to use them internally is a good
first step. Also define GTK_COMPILATION so we can keep using
gdk_threads_enter/leave without causing deprecation warnings.
If the PPD is not available when the printer is loaded then the PPD options are
not available and we can't get the correct qualifier to use with colord.
When the PPD becomes available, refresh the profile title to reflect reality.
https://bugzilla.gnome.org/show_bug.cgi?id=674890
Having refactored cups_request_printer_list_cb so that the cups
version-dependent block size is small enough to be handled in a single ifdef,
make the ifdef HAVE_CUPS_API_1_6 block.
So that it can be passed as a single parameter to functions as we extract-function to make cups_request_printer_list_cb more manageable.
Note that not all of the affected variables are changed in this changeset. Those are in extracted functions and will be addressed in the next two changes.
This commit fixes crash which occurs in Firefox, Thunderbird and Inkscape
during printing. This crash was caused because of wrong handling of Custom
CUPS options. (#543520)
Reset state of CUPS requests correctly during authentization and
check CUPS requests for errors.
Don't initialize variables holding password and username with empty
string (#664640).
This functionality adds a new 'Printer Profile' entry to the 'Color' page in the
UNIX print dialog if colord support is enabled.
This shows the user what color profile will be used for the settings they have
selected, and if no profile or the default profile is going to be used.
We are deliberately not allowing the user to _change_ the selected profile, as
the ICC profile is an implementation detail, and we should not change the other
print settings based on the characterization state.
The OpenICC group broadly recommend showing the profile that is used, so that
power users can be sure the correct profile is being used at the right time.
Normal users won't care, as they don't know how horrible the color match is
without profiling the printer and media.
