At least from GTK v3.22.30, the code disallows attempts to print PDF and
PS files using the LPR backend. Although it is not easy or possible for
GTK to determine if the printer can print these formats by querying lpr,
the print backend should allow lpr to try.
There are two uses cases:
- A filter is being used by lpr, specified in the printcap file, to process the
files prior to printing them.
- The printer can print PDF and PS files directly. There are many printers that
can print these formats, so GTK should allow for the possibility.
to retreive paper size specific hard margins and use this
to set the hard margins in the print context.
(modified by Marek Kasik <mkasik@redhat.com>)
https://bugzilla.gnome.org/show_bug.cgi?id=686109
When using strncpy() with a buffer we need to account for the
terminating NUL character. GCC 8 started warning when using PPD_MAX_NAME
as the buffer length for strncpy() because the buffer we're copying into
has the same length — which means that the terminating NUL may be
skipped if the source string has a length of PPD_MAX_NAME.
The appropriate way to handle the case where we're copying a source with
a length bigger than of PPD_MAX_NAME is, as reported in the strncpy()
documentation, to copy `PPD_MAX_NAME - 1` bytes, and explicitly NUL
terminate the destination buffer. This has the additional benefit of
avoiding the compiler warning.
Instead of having separate options for each print backend, we can use
the same approach as the input method modules: a single option, with a
comma-separated list of print backends.
GDK has a lock to mark critical sections inside the backends.
Additionally, code that would re-enter into the GTK main loop was
supposed to hold the lock.
Back in the Good Old Days™ this was guaranteed to kind of work only on
the X11 backend, and would cause a neat explosion on any other GDK
backend.
During GTK+ 3.x we deprecated the API to enter and leave the critical
sections, and now we can remove all the internal uses of the lock, since
external API that uses GTK+ 4.x won't be able to hold the GDK lock.
https://bugzilla.gnome.org/show_bug.cgi?id=793124
The main GDK thread lock is not portable and deprecated.
The only reason why gdk_threads_add_timeout() and
gdk_threads_add_timeout_full() exist is to allow invoking a callback
with the GDK lock held, in case 3rd party libraries still use the
deprecated gdk_threads_enter()/gdk_threads_leave() API.
Since we're removing the GDK lock, and we're releasing a new major API,
such code cannot exist any more; this means we can use the GLib API for
installing timeout callbacks.
https://bugzilla.gnome.org/show_bug.cgi?id=793124
Check UUID for printers obtained via DNSSD whether
they are already installed on local CUPS server.
Don't show such printers.
Not all printers published via DNSSD have UUID entry though.
https://bugzilla.gnome.org/show_bug.cgi?id=786794
We are currently truncating job names to 255 bytes, because that's the
maximum allowed length of job-name attribute in CUPS. This is a CUPS
limitation that GtkPrintOperation shouldn't need to know, and it
shouldn't affect other backends, that might have other limitations or
even no limitation at all. This has another side effect, that what you
set as GtkPrintOperation:job-name could be different to what you get if
the property is truncated, this is not documented in
gtk_print_operation_set_job_name(). So, I think the job name should be
truncated by the CUPS backend, right before setting the job-name
attribute.
https://bugzilla.gnome.org/show_bug.cgi?id=774097
The previous patches didn't mark some strings as to be translated, and
tried to translate strings with a variable part already inside the
string, which isn't going to work.
Mark the strings as translatable with context, and also make sure to
translate static strings when getting them out of their structure.
https://bugzilla.gnome.org/show_bug.cgi?id=764585
Some of the translated strings in the cups printbackend are short
and generic and might occur in other contexts. Give them disambiguating
message contexts to avoid translation problems.
In order to retrieve the user options for a printer, the respective
printer name is used.
This fixes the comparison of printer names to avoid that the options of
another printer are accidently read whose name starts with the same
letters, but is longer (e.g. "myprinterlongername" instead of
"myprinter").
This fixes Bug 753628.
"Yo, we heard you like traversing NULL-terminated arrays to operate on
them, so we called g_strv_length() as the for condition, so you can
iterate the array while iterating the array."
Instead of making famed rapper and television producer Xzibit proud, we
should avoid calling g_strv_length() on an array while looping on the
array, to avoid quadratic complexity.
We do this in various places that deal with arrays of strings that we
cannot really guess are short enough not to matter — e.g. the list of
CSS selectors in the inspector, or the required authentication
information for printing.
Request "output-bin-supported" and "output-bin-default" attributes through
IPP if there is no PPD for selected printer.
Pass "output-bin" option with other options in printer_get_options().
Translate standard IPP values of "output-bin" option.
https://bugzilla.gnome.org/show_bug.cgi?id=725441
Add parameter for specification of port to gtk_cups_connection_cups_new().
Use default port returned by ippPort() if the given port is lower than 0.
https://bugzilla.gnome.org/show_bug.cgi?id=693738
If auth_info_required is only set to "negotiate" the
request password dialog is shown anyway for each print
job without any input fields. As the request_password
dialog only handles username, password and domain.
https://bugzilla.gnome.org/show_bug.cgi?id=669008
We directly get the length of the secret from the g_variant
and use it in a following g_strndup which ensures that the
resulting string is terminated.
This fixes reading secrets which were stored by system-config-printer.
https://bugzilla.gnome.org/show_bug.cgi?id=740612
Request "sides-supported" and "sides-default" attributes through
IPP if there is no PPD for selected printer.
Pass "sides" option with other options in printer_get_options().
Add function setup_ipp_option() for creating of IPP option
of given name with passed choices and default value.
Mark such an option as "is-ipp-option" so we can distinguish it
later.
https://bugzilla.gnome.org/show_bug.cgi?id=725441
Query printer via IPP for paper sizes if there is no
or empty PPD file.
Parse "media-supported" and "media-size-supported" attributes for list
of paper sizes. Parse "media-default" and "media-col-default" attributes
for default settings.
https://bugzilla.gnome.org/show_bug.cgi?id=725441
Remove checks for NULL before g_free() and g_clear_object().
Merge check for NULL, freeing of pointer and its setting
to NULL by g_clear_pointer().
https://bugzilla.gnome.org/show_bug.cgi?id=733157
When a printer requires auth_info (e.g. a printer connected
over the samba protocol) it is now possible to save the
credentials necessary for printing if a secrets service
is available over dbus.
The auth_info is then stored / loaded from the default
collection of that secrets service.
If no such service is available the user is not shown
the option to remember the password and the behavior
remains the same as before.
https://bugzilla.gnome.org/show_bug.cgi?id=674264
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
