2005-08-09 Owen Taylor <otaylor@redhat.com>
* configure.in: Strip out all Xft, FreeType, and pangoxft checking.
Rewrite X checks to use pkg-config as much as possible.
* gdk/win32/gdkfont-win32.c (gdk_font_from_description_for_display): Make
this return Arial always to avoid using PangoWin32FontMap. (X11 backend
has always been returned "fixed" for a long time)
* gdk/linux-fb/gdkdrawable-fb2.c: Remove draw_glyphs() implementations,
fall through to the default implementation in terms of Cairo.
* gdk/linux-fb/gdkdrawable-fb2.c (gdk_fb_draw_text): Use gdk_draw_glyphs()
on the wrapper rather than gdk_fb_draw_glyphs()
2005-05-09 Owen Taylor <otaylor@redhat.com>
* gdk/gdkrgb.c (gdk_rgb_convert_0888_br, gdk_rgb_convert_8880_br):
Fill in unused bits so they can be used for the depth-32 target case.
Rewrite so that that gives a marginal speedup rather than a
marginal slowdown. (on x86)
* gdk/gdkscreen.h gdk/x11/gdkscreen-x11.[ch] gdk/x11/gdkvisual-x11.c:
Add gdk_screen_get_rgba_colormap/visual to get a visual for
windows with an alpha channel, if one exists.
* gdk/win32/gdkscreen-win32.c gdk/linux-fb/gdkscreen-fb.c:
Stub out gdk_screen_get_rgba_colormap/visual.
* gdk/x11/gdkcolor-x11.c (gdk_colormap_alloc_colors): computation of
"unused" wasn't right for depth == 32, since it depended on
shifting by 32.
* gdk/gdkrgb.c: Fill in alpha bits with 1s. (Based on patch from
Keith Packard,
http://mail.gnome.org/archives/gtk-devel-list/2004-June/msg00080.html)
* gdk/x11/gdkdrawable-x11.c (gdk_x11_drawable_get_picture):
Implement again, without using Xft.
* tests/testgtk.c: Add a test for windows with an alpha channel.
2005-04-28 Owen Taylor <otaylor@redhat.com>
* gtk/gtkwidget.c: Add a draw-border style property to allow
themes to draw outside the widget's allocation.
* gdk/gdkwindow.c gtk/gtkstyle.c: Remove some save/restore pairs
that were working around the clip-leakage bug in Cairo.
* gtk/gtkstyle.c: Use cairo_fill_preserve() rathe than
save/fill/restore.
* gdk/gdkgc.c gdk/gdkinternals.h: Add _gdk_gc_update_context()
That updates a Cairo context to match a GC.
* gdk/gdkdraw.c: Use _gdk_gc_update_context() to add support
for tiles/stipples/clipping to gdk_draw_glyphs(),
gdk_draw_trapezoids().
* gdk/gdkpango.c: Use _gdk_gc_update_context() instead of internal
implementation of stipples. Use one cairo_t across the entire
drawing operation. Replace cairo_matrix_create() with
stack-allocated matrices.
* gdk/gdkgc.c gdk/gdkinternals.h gdk/x11/gdkgc-x11.c
gdk/win32/gdkgc-win32.c: Save various aspects of the
GC state (fill, tile, stipple, foreground, background, clip region)
in instance-private-data for future use. Add getters.
Get rid of _gdk_windowing_gc_get_foreground() function implemented
by the backends.
* gdk/gdkgc.c gdk/gdkinternals.h gdk/x11/gdkgc-x11.c
gdk/win32/gdkgc-win32.c gdk/linux-fb/gdkgc-fb.c: Add
_gdk_gc_init() to do initial setup of the GC from values;
fixes some problems from drawable redirection.
* gdk/gdkgc.c gdk/gdkinternals.h gdk/x11/gdkgc-x11.c
gdk/win32/gdkgc-win32.c gdk/linux-fb/gdkgc-fb.c: Move
gdk_gc_copy() and gdk_gc_set_clip_{region,rectangle}() into
the generic code, add _gdk_windowing_gc_copy(),
_gdk_windowing_gc_set_clip_region() to do backend specific
stuff.
* gdk/x11/{gdkprivate-x11.h,gdkgc-x11.c.c,gdkdrawable-x11.c}
gdk/win32/{gdkprivate-win32.h,gdkgc-x11.c.c,gdkdrawable-x11.c}
gdk/linux-fb/{gdkprivate-fb.h,gdkgc-fb.c.c,gdkdrawable-fb.c}:
Don't duplicate state that now is stored by the generic code.
* gdk/gdk.symbols Update
2004-07-28 Matthias Clasen <mclasen@redhat.com>
* gdk/linux-fb/gdkprivate-fb.h: Make the fb backend compile against
current freetype. (#148558, Nicolas Deves)
Sun Jul 11 15:24:03 2004 Soeren Sandmann <sandmann@daimi.au.dk>
Bug 143330, support update counter spec.
* configure.in: Add check for the Sync extension
* gdk/gdkwindow.h: gdk_window_enable_synchronized_configure() and
gdk_window_configure_finished()
* gtk/gtkwindow.c (gtk_window_move_resize): Call gdk_window_finish_configure().
* gtk/gtkwindow.c (gtk_window_realize): Automatically enable
synchronized configures.
* gdk/x11/gdkwindow-x11.h (struct _GdkToplevelX11): Store current
and pending counter values.
* gdk/x11/gdkwindow-x11.c (gdk_window_configure_finished): New function.
* gdk/x11/gdkwindow-x11.c
(gdk_window_enable_synchronized_configure): New function.
* gdk/x11/gdkwindow-x11.c (gdk_toplevel_x11_free_contents):
Delete update counter.
* gdk/x11/gdkwindow-x11.c (set_wm_protocols): Advertise
_NET_WM_SYNC_REQUEST when Sync is available
* gdk/x11/gdkevents-x11.c (gdk_wm_protocols_filter): Handle
_NET_WM_SYNC_REQUEST messages
* gdk/x11/gdkevents-x11.c (gdk_event_translate): Save counter
value for use by gdk_window_configure_finished() when receiving
ConfigureNotifies.
* gdk/x11/gdkdisplay-x11.h (struct _GdkDisplayX11): Add use_sync flag
* gdk/x11/gdkdisplay-x11.c (gdk_display_open): Check if the XSync
extension is available
* gdk/x11/gdkdisplay-x11.c: Add _NET_WM_SYNC_REQUEST and
_NET_WM_SYNC_REQUEST_COUNTER to list of supported atoms.
* gdk/linux-fb/gdkwindow-fb.c, gdk/win32/gdkwindow-win32.c: Add
stubs for enable_synchronized_configure() and configure_finished()
2004-05-05 Elijah Newren <newren@math.utah.edu>
Changes to support do-not-focus-on-map hint in conjunction with
_NET_WM_USER_TIME (#115650):
* gdk/gdkwindow.h (struct _GdkWindowObject): Add a new boolean
field focus_on_map
* gdk/gdkwindow.h (gdk_window_set_accept_focus): New function to
set it.
* gtk/gtkwindow.[hc]: Add a boolean property "focus_on_map"
and gtk_window_get_focus_on_map() and gtk_window_set_focus_on_map().
* gdk/win32/gdkwindow-win32.c (gdk_window_new):
* gdk/linux-fb/gdkwindow-fb.c (gdk_window_new):
* gdk/x11/gdkwindow-x11.c (gdk_window_new):
Initialize the focus_on_map field to TRUE.
* gdk/win32/gdkwindow-win32.c (gdk_window_set_focus_on_map):
* gdk/linux-fb/gdkwindow-fb.c (gdk_window_set_focus_on_map):
* gdk/x11/gdkwindow-x11.c (gdk_window_set_focus_on_map):
* gdk/x11/gdkwindow-x11.c (setup_toplevel_window):
Implementations for the various backends. The Win32 and linux-fb
implementations set the focus_on_map field, but don't use it yet
to actually implement noinput windows. The X implementation sets
_NET_WM_USER_TIME to 0 if focus_on_map is FALSE (see the EWMH).
* gdk/x11/gdkwindow-x11.h:
* gdk/x11/gdkevents-x11.c (set_user_time):
* gdk/x11/gdkinput-x11.c (_gdk_input_common_other_event):
* gdk/x11/gdkwindow-x11.c (gdk_x11_window_set_user_time):
s/_gdk_x11_window_set_user_time/gdk_x11_window_set_user_time/,
since we want that function to be part of the public API.
2004-03-05 Federico Mena Quintero <federico@ximian.com>
* gdk/linux-fb/gdkglobals-fb.c: Make <config.h> the very first
include.
* gdk/linux-fb/gdkwindow-fb.c: Likewise.
* gdk/linux-fb/gdkinput.c: Likewise.
2004-03-05 Federico Mena Quintero <federico@ximian.com>
Fixes#136082 and #135265, patch by Morten Welinder.
* configure.in: Use AC_SYS_LARGEFILE.
* */*.c: #include <config.h>
Thu Dec 11 00:35:12 2003 Matthias Clasen <maclas@gmx.de>
Changes to allow "no input" windows (#64613):
* gdk/gdkwindow.h (struct _GdkWindowObject): Add a new boolean
field accept_focus.
* gdk/gdkwindow.h (gdk_window_set_accept_focus): New function to
set it.
* gtk/gtkwindow.[hc]: Add a boolean property "accept_focus"
and gtk_window_get_focus() and gtk_window_set_focus().
* gdk/win32/gdkwindow-win32.c (gdk_window_new):
* gdk/linux-fb/gdkwindow-fb.c (gdk_window_new):
* gdk/x11/gdkwindow-x11.c (gdk_window_set_new):
Initialize the accept_focus field to TRUE.
* gdk/win32/gdkwindow-win32.c (gdk_window_set_accept_focus):
* gdk/linux-fb/gdkwindow-fb.c (gdk_window_set_accept_focus):
* gdk/x11/gdkwindow-x11.c (gdk_window_set_accept_focus):
Implementations for the various backends. The Win32 and linux-fb
implementations set the accept_focus field, but don't use it yet
to actually implement noinput windows. The X implementation updates
the WM_HINTS to select the globally active input model (see the
ICCCM) if accept_focus is FALSE.
* gdk/x11/gdkevents-x11.c (gdk_wm_protocols_filter): Ignore the
WM_TAKE_FOCUS message if accept_focus is FALSE.
2003-12-10 Mark McLoughlin <mark@skynet.ie>
Utility functions for multi-screen applications which need
to ensure launched applications appear on a certain screen.
See bug #95897.
* gdk/gdkspawn.h: header for multi-screen launching
support.
* gdk/Makefile.am: install gdkspawn.h.
* gdk/x11/Makefile.am:
* gdk/x11/gdkspawn-x11.c:
(gdk_spawn_make_environment_for_screen): private function
to create an environment vector with DISPLAY set appropriately
for the screen.
(gdk_spawn_on_screen): multi-screen version of g_spawn_async().
(gdk_spawn_on_screen_with_pipes): version of g_spawn_async_with_pipes().
(gdk_spawn_command_line_on_screen): version of g_spawn_command_line_async().
* gdk/linux-fb/Makefile.am,
gdk/linux-fb/gdkspawn-fb.c: linux-fb impl.
* gdk/win32/Makefile.am,
gdk/win32/gdkspawn-win32.c: win32 impl.
Fri Jul 4 15:57:52 2003 Owen Taylor <otaylor@redhat.com>
* gdk/x11/gdkevents-x11.c (gdk_wm_protocols_filter):
Use asynchronously _gdk_x11_set_input_focus_safe
to avoid having to trap errors and XSync().
* gdk/x11/gdkwindow-x11.c (gdk_window_focus): Use
_gdk_x11_set_input_focus_safe() here as well.
* gdk/x11/gdkevents-x11.c (gdk_check_wm_state_changed):
Rework handling of property notifies on _NET_WM_STATE
so that we ignore _NET_WM_DESKTOP notifies unless we
really care.
* gdk/x11/gdkimage-x11.c (gdk_image_check_xshm): Use
XShmQueryExtension() rather than XQueryExtension() to
avoid extra rountrip.
* gdk/x11/gdkwindow-x11.c (_gdk_windowing_window_init):
Remove unused call to XGetWindowAttributes()
* gdk/x11/gdkdisplay-x11.c (gdk_display_open): Remove
unused call to XGetKeyboardControl().
* gdk/x11/gdkdisplay-x11.c gdk/gdk.def (gdk_display_flush):
Add (#99571)
* gdk/win32/gdkevents-win32.c gdk/linux-fb/gdkevents-fb.c
No-op implementations of gdk_display_flush().
* gdk/gdkwindow.c (gdk_window_process_all_updates): Use
gdk_display_flush() rather than gdk_flush() to avoid
XSync().
* gdk/x11/gdkwindow-x11.c (update_wm_hints)
gdk/x11/gdkwindow-x11.h: Centralize all handling of WM_HINTS here
so that we don't have to get the property back from the server.
* gdk/x11/gdkwindow-x11.c (show_window_internal): Store
the serial of when we map a toplevel to allow optimizing
out notifies on _NET_WM_STATE/_NET_WM_DESKTOP.
* gdk/x11/gdkevents-x11.c (gdk_event_translate): Don't
XTranslateCoordinates() for override-redirect windows.
Fri Jul 4 15:59:27 2003 Owen Taylor <otaylor@redhat.com>
* gdk/x11/gdkwindow-x11.c (gdk_window_set_group): Remove comment
about setting window group after the window is mapped from docs
- nothing the ICCCM forbids that.
* gdk/x11/gdkcursor-x11.c (gdk_display_get_maximal_cursor_size):
Fix g_return_val_if_fail() in void return function.
* configure.in: Fix misplaced comma that was resulting
in XShm always being disabled.
Tue May 6 16:50:52 2003 Owen Taylor <otaylor@redhat.com>
Patch from James Henstridge to update to automake-1.7
(#109542)
* autogen.sh: update to call newer tools.
* configure.in: various updates, to use M4 macros to put
variables that change each release at the top.
Use AC_HELP_STRING to format help strings.
Use AC_CONFIG_COMMANDS to generate gdkconfig.h.
* Makefile.am: require Automake 1.7. Remove gdk-2.0.pc and
gtk+-2.0.pc on uninstall. Pass --enable-gtk-doc to configure
during distcheck.
* docs/reference/*/Makefile.am: simplify to use the gtk-doc.make
makefile fragment.
* */Makefile.am: don't use STRIP_BEGIN/STRIP_END.
Use BUILT_SOURCES where appropriate.
Build generated files in builddir rather than srcdir.
Fix uninstall and distclean targets to satisfy distcheck.
===
* gdk/*/Makefile.am: Remove the hacks to get gdkenumtypes.h
built first, since we are now using BUILT_SOURCES.
* gdk/Makefile.am: Remove an outdated comment about gdk_headers.
* demos/gtk-demo/Makefile.am: Fix srcdir != buildd problem
with geninclude.pl.
* configure.in: Update versions to 2.3.0.
Tue Dec 10 00:49:35 2002 Kristian Rietveld <kris@gtk.org>
* gdk/gdkpixmap.h (gdk_pixmap_new), (gdk_bitmap_create_from_data),
(gdk_pixmap_create_from_xpm), (gdk_pixmap_colormap_create_from_xpm),
(gdk_pixmap_create_from_xpm_d),
(gdk_pixmap_colormap_create_from_xpm_d): update to allow a
GdkDrawable instead of a GdkWindow.
* gdk/gdkpixmap.c (gdk_pixmap_colormap_create_from_xpm),
(gdk_pixmap_create_from_xpm), (gdk_pixmap_colormap_create_from_xpm_d),
(gdk_pixmap_create_from_xpm_d): update to allow a GdkDrawable
instead of a GdkWindow.
* gdk/linux-fb/gdkpixmap-fb.c (gdk_pixmap_new),
(gdk_bitmap_create_from_data), (gdk_pixmap_create_from_data): update
to allow a GdkDrawable instead of a GdkWindow.
* gdk/x11/gdkpixmap-x11.c (gdk_pixmap_new),
(gdk_bitmap_create_from_data), (gdk_pixmap_create_from_data): likewise
Mon Nov 25 17:44:09 2002 Owen Taylor <otaylor@redhat.com>
Fixes from #98358, Havoc Pennington.
* gdk/{x11,win32,linux-fb}/gdkcolor-*.c (gdk_colormap_finalize):
Free the private structure.
* gdk/x11,win32,linxu-fb}/gdkscreen-*.c (gdk_screen_set_default_colormap):
gdk/x11/gdkwindow-x11.c (_gdk_windowing_window_init):
Keep a ref to the default colormap.
* gdk/x11/gdkscreen-x11.c (gdk_screen_x11_dispose): Unref
the default colormap.
* gdk/x11/gdkwindow-x11.c (gdk_window_impl_x11_set_colormap):
Handle the CMAP == NULL case even when the window is
destroyed.
* gdk/x11/gdkwindow-x11.c (_gdk_windowing_window_init):
Add a missing ref for the system colormap.
Fri Nov 8 18:04:16 2002 Owen Taylor <otaylor@redhat.com>
* gdk/{linux-fb,win32,11}/Makefile.am: Try a different
hack to force gdkenumtypes.h to be updated before
building the subdir, last hack caused contents
to be rebuilt on every make.
Fri Nov 8 18:04:16 2002 Owen Taylor <otaylor@redhat.com>
* gdk/{linux-fb,win32,11}/Makefile.am: Add in a awful
hack to force gdkenumtypes.h to be updated before
building the subdir. (#86587)
Sat Nov 2 00:22:33 2002 Owen Taylor <otaylor@redhat.com>
Add startup notification hooks - mostly based on patch
by Havoc Pennington in #96772.
* gdk/gdk.h gdk/x11/gdkdisplay-x11.c
gdk/{win32,linux-fb}/gdkmain-*.c: (gdk_notify_startup_complete):
new function that indicates an application has finished starting
up.
* gdk/x11/gdkmain-x11.c gdk/x11/gdkdisplay-x11.c
(_gdk_windowing_set_default_display): store value of
DESKTOP_STARTUP_ID on the default screen, and clear it from the
environment.
* gdk/x11/gdkdisplay-x11.c:
Set _NET_STARTUP_ID hint on display's group leader window.
* gtk/gtkwindow.c (gtk_window_set_auto_startup_notification):
function to toggle whether we automatically broadcast that we've
started up, after mapping the first toplevel window.
(gtk_window_map): call gdk_screen_notify_startup_complete() by
default, unless enabled by above.
* gtk/gtkmain.c gtk/gtkcombo.c gtk/gtktoolbar.c:
Couple of warning fixes.
Thu Oct 31 12:40:39 2002 Owen Taylor <otaylor@redhat.com>
* gdk/gdk.[ch] gdk/gdkglobals.c gdk/gdkinternals.h
gdk/{x11,win32,linux-fb}/gdkscreen-{x11,win32,linux-fb}.c:
Add a --screen option for setting the default screen.
(Based on a patch from Balamurali Viswanathan, #81145)
* gdk/gdk.c gdkdisplay.h gtk/gtkmain.c: Add
gdk_display_open_default_libgtk_only(), so gtk_init_check()
and gdk_init_check() can share the same behavior w.r.t.
--screen.
* gdk/gdk.[ch]: Make gdk_get_display_arg_name() G_CONST_RETURN.
* gdk/x11/gdkselection-x11.c (gdk_selection_property_get):
Suppress a spurious warning.
* tests/testgtkrc: Remove someleft-over commented out
includes that could be confusing.
Mon Oct 7 15:48:44 2002 Owen Taylor <otaylor@redhat.com>
* gdk/gdkdnd.[ch] gdk/x11/gdkdnd-x11.c: Add
gdk_drag_find_window_for_screen(), so that we can
interpret x_root / y_root relative to the correct screen.
* gdk/gdkdnd.c Makefile.am gdk/x11/gdkdnd-x11.c
gdk/fb/gdkdnd-fb.c gdk/win32/gdkdnd-win32.c: New file.
Move gdk_drag_find_window(), gdk_drag_get_protocol() here.
* gtk/gtkdnd.c: Handle drags between screens; use
a fallback icon for icons set as windows/pixmaps,
move the drag icon between displays for icons set as
pixbufs.
* gdk/x11/gdkkeys-x11.c (update_keymaps): Fix infinite
loop from last change.
Mon Oct 7 15:10:00 2002 Owen Taylor <otaylor@redhat.com>
* gdk/gdkdisplay.[ch] gdk/gdkinternals.h
gdk/gdkwindow.[ch] gdk/linux-fb/gdkwindow-fb.c
gdk/win32/gdkwindow-win32.c gdk/x11/gdkwindow-x11.c:
- Replace GdkPointerHooks with a multihead-safe
GdkDisplayPointerHooks, leave GdkPointerHooks
around for singlehead.
- Add gdk_display_get_pointer() to get the pointer
location with the screen it is on.
* gdk/gdk.def gdk/gdkdisplay.[ch] gdk/gdkscreen.[ch]:
Change gdk_screen_get_window_at_pointer() to
gdk_display_get_window_at_pointer().
* gtk/gtktreeview.c demos/gtk-demo/changedisplay.c
tests/testgtk.c: Use gdk_display_get_window_at_pointer(),
not gdk_screen_get_window_at_pointer().
* gtk/gtkcolorsel.c: Fix grabbing color to be multihead
safe.
* gtk/gtkwidget.c: Allow gtk_widget_push_colormap (NULL).
since it is useful for writing code that doesn't
know the dcurrent state but needs a clean colormap.
* gtk/gtkrc.c: When loading the settings for a particular
screen, only reset toplevels on that screen.
* gtk/gtkiconfactory.h: Fix #ifdef GTK_MULTIHEAD_SAFE
that should have been #ifndef GTK_MULTIHEAD_SAFE.
Thu Oct 3 14:13:33 2002 Owen Taylor <otaylor@redhat.com>
* gdk/gdkevents.c (gdk_event_new): Add a 'type'
parameter, make public.
* gdk/gdkevents.c (gdk_event_copy): Copy the screen.
* gdk/gdkevents.c gdk/linux-fb/gdkmain-fb.c
gdk/x11/gdkevents-x11.c gdk/win32/gdkevents-win32.c:
_gdk_event_new() => gdk_event_new().
* gdk/win32/gdkevents-win32.c (real_window_procedure):
Fix event_private->screen breakage that results from evil
encapsulation breakage here.
* gtk/gtkclist.c gtk/gtkcombo.c gtk/gtkcontainer.c
gtk/gtkdialog.c gtk/gtkdnd.c gtk/gtkdrawingarea.c
gtk/gtkimcontextsimple.c gtk/gtklist.c gtk/gtkmenu.c
gtk/gtknotebook.c gtk/gtkplug.c gtk/gtkselection.c
gtk/gtktext.c gtk/gtktreeitem.c gtk/gtktreeview.c
gtk/gtkviewport.c gtk/gtkwindow-decorate.c gtk/gtkwindow.c
tests/testgtk.c: Remove most usage of stack-allocated
GdkEvent structures.
* gtk/gtktreeview.c: Use a cut-and-paste of the full
send_focus_event() from gtkwindow.c that does the necessary
notification of the ::has-focus property and setting of
the HAS_FOCUS flag.x
* gtk/gtkdnd.c: Clean up some mess/duplicated code; removing
an extraneous use of a GdkEvent.
Mon Sep 30 15:31:57 2002 Owen Taylor <otaylor@redhat.com>
* gdk/gdkdisplay.c gdk/x11/gdkdisplay-x11.c
gdk/gdkinternals.h: Set the client ID on all
displays. (#85713)
* gdk/gdkdisplay.h gkd/gdkinternals.h
gdk/{linux-fb,win32,x11}/gdkmain-{fb,win32,x11}.c
Privatize gdk_display_set_sm_client_id().
Fri Sep 27 14:30:34 2002 Eric Warmenhoven <eric@warmenhoven.org>
* gdk/Makefile.am gdk/gdkkeynames.c gdk/linux-fb/gdkmain-fb.c
gdk/win32/gdkkeys-win32.c: Move gdk_keval_name and
gdk_keyval_from_name to new gdkkeynames.c, share implementation for
linux-fb and win32 (#94123)
* gdk/linux-fb/Makefile.am gdk/linux-fb/gdkkeyboard-fb.c
gdk/linux-fb/gdkmain-fb.c gdk/linux-fb/gdkmouse-fb.c: add
-DG_DISABLE_DEPRECATED and -DGDK_PIXBUF_DISABLE_DEPRECATED to compile
flags
* gdk/linux-fb/gdkdisplay-fb.c: prevent segfault if display can't
initialize
* gdk/linux-fb/gdkkeyboard-fb.c: better parsing of keycodes
* gdk/linux-fb/gdkwindow-fb.c: add stubs for new functions
Wed Sep 25 10:51:24 2002 Owen Taylor <otaylor@redhat.com>
* gdk/gdkscreen.h gdk/{x11,win32,linux-fb}/gdkscreen-*.c:
Add gdk_screen_make_display_name(), which returns a
display name that can be used to open a display with the
screen as the default (Based on patch from Mark McLoughlin,
#86013)
