This is a web service provided by Google that allows people to
share their printers (https://www.google.com/cloudprint/learn/).
In addition to being able to print to printers shared on Google Cloud
Print, there is an equivalent of "Print to file" in the form of "Save to
Google Drive".
The cloudprint module uses gnome-online-accounts to obtain the OAuth 2.0
access token for the Google account.
Currently it can discover available printers, get simple details about
them such as display name and status, and submit jobs without any
special options.
https://bugzilla.gnome.org/show_bug.cgi?id=723368
Return values of g_variant_get_child_value() were not unreffed
correctly together with one value returned by g_variant_get().
Use g_variant_get_data() instead of copying each byte separately.
https://bugzilla.gnome.org/show_bug.cgi?id=712799
Use info available in Avahi TXT records for creation of gtk printer
and request details when needed (through gtk_printer_request_details()).
If there is a printer advertised on Avahi by a remote CUPS server
try to get its PPD file at first or get its capabilities through an IPP
request if it fails.
https://bugzilla.gnome.org/show_bug.cgi?id=712751
Printing a file with to PDF/etc. with the virtual printer option doesn't add
the file to the list of recently used files. It should be there, so I can
easily access it.
https://bugzilla.gnome.org/show_bug.cgi?id=668598
It can happen if the io channel has been closed. In that case
g_io_channel_write_chars() returns early because of a g_return macro
that checks if the io channel is writable. When returning from g_return
macros, the bytes written output parameter is not updated and the error
is not filled, so the error is not detected and the written variable is
used uninitialized. We should check the return value of
g_io_channel_write_chars() to break the loop.
https://bugzilla.gnome.org/show_bug.cgi?id=685419
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.
To make setting output directory and filename simpler in the PrintToFile
dialog two gtkprintsettings have been added GTK_PRINT_SETTINGS_OUTPUT_DIR
and GTK_PRINT_SETTINGS_OUTPUT_BASENAME.
This will reduce the code needed to implement a better name than "output.pdf"
and actually makes more sense than the existing setting
GTK_PRINT_SETTINGS_OUTPUT_URI which doesn't work seamlessly with
GTK_PRINT_SETTINGS_OUTPUT_FILE_FORMAT like the new settings do.
https://bugzilla.gnome.org/show_bug.cgi?id=657322
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.
