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https://gitlab.gnome.org/GNOME/gtk.git
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4c150d8eb5
Remove all the old 2.x and 3.x version annotations. GTK+ 4 is a new start, and from the perspective of a GTK+ 4 developer all these APIs have been around since the beginning.
261 lines
6.8 KiB
C
261 lines
6.8 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gdkproperty.h"
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#include "gdkinternals.h"
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#include "gdkprivate-x11.h"
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#include "gdkdisplay-x11.h"
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#include "gdkscreen-x11.h"
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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#include <string.h>
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static void
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insert_atom_pair (GdkDisplay *display,
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GdkAtom virtual_atom,
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Atom xatom)
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{
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GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
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if (!display_x11->atom_from_virtual)
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{
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display_x11->atom_from_virtual = g_hash_table_new (g_direct_hash, NULL);
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display_x11->atom_to_virtual = g_hash_table_new (g_direct_hash, NULL);
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}
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g_hash_table_insert (display_x11->atom_from_virtual, (gpointer)virtual_atom,
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GUINT_TO_POINTER (xatom));
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g_hash_table_insert (display_x11->atom_to_virtual,
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GUINT_TO_POINTER (xatom), (gpointer)virtual_atom);
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}
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static Atom
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lookup_cached_xatom (GdkDisplay *display,
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GdkAtom atom)
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{
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GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
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if (display_x11->atom_from_virtual)
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return GPOINTER_TO_UINT (g_hash_table_lookup (display_x11->atom_from_virtual, atom));
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return None;
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}
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/**
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* gdk_x11_atom_to_xatom_for_display:
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* @display: (type GdkX11Display): A #GdkDisplay
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* @atom: A #GdkAtom, or %NULL
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*
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* Converts from a #GdkAtom to the X atom for a #GdkDisplay
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* with the same string value. The special value %NULL
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* is converted to %None.
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*
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* Returns: the X atom corresponding to @atom, or %None
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**/
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Atom
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gdk_x11_atom_to_xatom_for_display (GdkDisplay *display,
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GdkAtom atom)
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{
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Atom xatom = None;
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g_return_val_if_fail (GDK_IS_DISPLAY (display), None);
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if (atom == NULL)
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return None;
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if (gdk_display_is_closed (display))
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return None;
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xatom = lookup_cached_xatom (display, atom);
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if (!xatom)
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{
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const char *name = (const char *)atom;
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xatom = XInternAtom (GDK_DISPLAY_XDISPLAY (display), name, FALSE);
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insert_atom_pair (display, atom, xatom);
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}
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return xatom;
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}
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void
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_gdk_x11_precache_atoms (GdkDisplay *display,
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const gchar * const *atom_names,
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gint n_atoms)
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{
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Atom *xatoms;
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GdkAtom *atoms;
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const gchar **xatom_names;
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gint n_xatoms;
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gint i;
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xatoms = g_new (Atom, n_atoms);
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xatom_names = g_new (const gchar *, n_atoms);
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atoms = g_new (GdkAtom, n_atoms);
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n_xatoms = 0;
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for (i = 0; i < n_atoms; i++)
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{
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GdkAtom atom = g_intern_static_string (atom_names[i]);
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if (lookup_cached_xatom (display, atom) == None)
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{
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atoms[n_xatoms] = atom;
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xatom_names[n_xatoms] = atom_names[i];
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n_xatoms++;
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}
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}
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if (n_xatoms)
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XInternAtoms (GDK_DISPLAY_XDISPLAY (display),
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(char **)xatom_names, n_xatoms, False, xatoms);
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for (i = 0; i < n_xatoms; i++)
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insert_atom_pair (display, atoms[i], xatoms[i]);
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g_free (xatoms);
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g_free (xatom_names);
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g_free (atoms);
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}
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/**
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* gdk_x11_xatom_to_atom_for_display:
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* @display: (type GdkX11Display): A #GdkDisplay
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* @xatom: an X atom
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*
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* Convert from an X atom for a #GdkDisplay to the corresponding
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* #GdkAtom.
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*
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* Returns: (transfer none): the corresponding #GdkAtom.
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**/
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GdkAtom
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gdk_x11_xatom_to_atom_for_display (GdkDisplay *display,
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Atom xatom)
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{
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GdkX11Display *display_x11;
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GdkAtom virtual_atom = NULL;
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g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
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if (xatom == None)
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return NULL;
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if (gdk_display_is_closed (display))
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return NULL;
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display_x11 = GDK_X11_DISPLAY (display);
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if (display_x11->atom_to_virtual)
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virtual_atom = g_hash_table_lookup (display_x11->atom_to_virtual,
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GUINT_TO_POINTER (xatom));
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if (!virtual_atom)
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{
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/* If this atom doesn't exist, we'll die with an X error unless
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* we take precautions
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*/
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char *name;
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gdk_x11_display_error_trap_push (display);
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name = XGetAtomName (GDK_DISPLAY_XDISPLAY (display), xatom);
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if (gdk_x11_display_error_trap_pop (display))
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{
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g_warning (G_STRLOC " invalid X atom: %ld", xatom);
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}
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else
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{
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virtual_atom = g_intern_string (name);
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XFree (name);
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insert_atom_pair (display, virtual_atom, xatom);
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}
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}
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return virtual_atom;
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}
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/**
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* gdk_x11_get_xatom_by_name_for_display:
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* @display: (type GdkX11Display): a #GdkDisplay
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* @atom_name: a string
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*
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* Returns the X atom for a #GdkDisplay corresponding to @atom_name.
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* This function caches the result, so if called repeatedly it is much
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* faster than XInternAtom(), which is a round trip to the server each time.
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*
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* Returns: a X atom for a #GdkDisplay
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**/
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Atom
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gdk_x11_get_xatom_by_name_for_display (GdkDisplay *display,
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const gchar *atom_name)
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{
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g_return_val_if_fail (GDK_IS_DISPLAY (display), None);
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return gdk_x11_atom_to_xatom_for_display (display, g_intern_string (atom_name));
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}
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Atom
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_gdk_x11_get_xatom_for_display_printf (GdkDisplay *display,
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const gchar *format,
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...)
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{
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va_list args;
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char *atom_name;
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Atom atom;
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va_start (args, format);
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atom_name = g_strdup_vprintf (format, args);
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va_end (args);
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atom = gdk_x11_get_xatom_by_name_for_display (display, atom_name);
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g_free (atom_name);
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return atom;
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}
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/**
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* gdk_x11_get_xatom_name_for_display:
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* @display: (type GdkX11Display): the #GdkDisplay where @xatom is defined
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* @xatom: an X atom
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*
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* Returns the name of an X atom for its display. This
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* function is meant mainly for debugging, so for convenience, unlike
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* XAtomName() and the result doesn’t need to
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* be freed.
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*
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* Returns: name of the X atom; this string is owned by GDK,
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* so it shouldn’t be modifed or freed.
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**/
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const gchar *
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gdk_x11_get_xatom_name_for_display (GdkDisplay *display,
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Atom xatom)
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{
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g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
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return (const char *)gdk_x11_xatom_to_atom_for_display (display, xatom);
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}
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