/* GDK - The GIMP Drawing Kit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include #include #include #include "gdk.h" /* For gdk_error_trap_push/pop() */ #include "gdkx.h" #include "gdkproperty.h" #include "gdkprivate.h" static GPtrArray *virtual_atom_array; static GHashTable *virtual_atom_hash; static GHashTable *atom_to_virtual; static GHashTable *atom_from_virtual; static gchar *XAtomsStrings[] = { /* These are all the standard predefined X atoms */ "NONE", "PRIMARY", "SECONDARY", "ARC", "ATOM", "BITMAP", "CARDINAL", "COLORMAP", "CURSOR", "CUT_BUFFER0", "CUT_BUFFER1", "CUT_BUFFER2", "CUT_BUFFER3", "CUT_BUFFER4", "CUT_BUFFER5", "CUT_BUFFER6", "CUT_BUFFER7", "DRAWABLE", "FONT", "INTEGER", "PIXMAP", "POINT", "RECTANGLE", "RESOURCE_MANAGER", "RGB_COLOR_MAP", "RGB_BEST_MAP", "RGB_BLUE_MAP", "RGB_DEFAULT_MAP", "RGB_GRAY_MAP", "RGB_GREEN_MAP", "RGB_RED_MAP", "STRING", "VISUALID", "WINDOW", "WM_COMMAND", "WM_HINTS", "WM_CLIENT_MACHINE", "WM_ICON_NAME", "WM_ICON_SIZE", "WM_NAME", "WM_NORMAL_HINTS", "WM_SIZE_HINTS", "WM_ZOOM_HINTS", "MIN_SPACE", "NORM_SPACE", "MAX_SPACE", "END_SPACE", "SUPERSCRIPT_X", "SUPERSCRIPT_Y", "SUBSCRIPT_X", "SUBSCRIPT_Y", "UNDERLINE_POSITION", "UNDERLINE_THICKNESS", "STRIKEOUT_ASCENT", "STRIKEOUT_DESCENT", "ITALIC_ANGLE", "X_HEIGHT", "QUAD_WIDTH", "WEIGHT", "POINT_SIZE", "RESOLUTION", "COPYRIGHT", "NOTICE", "FONT_NAME", "FAMILY_NAME", "FULL_NAME", "CAP_HEIGHT", "WM_CLASS", "WM_TRANSIENT_FOR", /* Below here, these our our additions. Increment N_CUSTOM_PREDEFINED * if you add any. */ "CLIPBOARD" /* = 69 */ }; #define N_CUSTOM_PREDEFINED 1 #define ATOM_TO_INDEX(atom) (GPOINTER_TO_UINT(atom)) #define INDEX_TO_ATOM(atom) ((GdkAtom)GUINT_TO_POINTER(atom)) static void insert_atom_pair (GdkAtom virtual_atom, Atom xatom) { if (!atom_from_virtual) { atom_from_virtual = g_hash_table_new (g_direct_hash, NULL); atom_to_virtual = g_hash_table_new (g_direct_hash, NULL); } g_hash_table_insert (atom_from_virtual, GDK_ATOM_TO_POINTER (virtual_atom), GUINT_TO_POINTER (xatom)); g_hash_table_insert (atom_to_virtual, GUINT_TO_POINTER (xatom), GDK_ATOM_TO_POINTER (virtual_atom)); } /** * gdk_x11_atom_to_xatom: * @atom: A #GdkAtom * * Converts from a #GdkAtom to the X atom for the default GDK display * with the same string value. * * Return value: the X atom corresponding to @atom. **/ Atom gdk_x11_atom_to_xatom (GdkAtom atom) { Atom xatom = None; if (ATOM_TO_INDEX (atom) < G_N_ELEMENTS (XAtomsStrings) - N_CUSTOM_PREDEFINED) return ATOM_TO_INDEX (atom); if (atom_from_virtual) xatom = GPOINTER_TO_UINT (g_hash_table_lookup (atom_from_virtual, GDK_ATOM_TO_POINTER (atom))); if (!xatom) { char *name; g_return_val_if_fail (ATOM_TO_INDEX (atom) < virtual_atom_array->len, None); name = g_ptr_array_index (virtual_atom_array, ATOM_TO_INDEX (atom)); xatom = XInternAtom (gdk_display, name, FALSE); insert_atom_pair (atom, xatom); } return xatom; } /** * gdk_x11_xatom_to_atom: * @xatom: an X atom for the default GDK display * * Converts from an X atom for the default display to the corresponding * #GdkAtom. * * Return value: the corresponding #GdkAtom. **/ GdkAtom gdk_x11_xatom_to_atom (Atom xatom) { GdkAtom virtual_atom = GDK_NONE; if (xatom < G_N_ELEMENTS (XAtomsStrings) - N_CUSTOM_PREDEFINED) return INDEX_TO_ATOM (xatom); if (atom_to_virtual) virtual_atom = GDK_POINTER_TO_ATOM (g_hash_table_lookup (atom_to_virtual, GUINT_TO_POINTER (xatom))); if (!virtual_atom) { /* If this atom doesn't exist, we'll die with an X error unless * we take precautions */ char *name; gdk_error_trap_push (); name = XGetAtomName (gdk_display, xatom); if (gdk_error_trap_pop ()) { g_warning (G_STRLOC " invalid X atom: %ld", xatom); } else { virtual_atom = gdk_atom_intern (name, FALSE); XFree (name); insert_atom_pair (virtual_atom, xatom); } } return virtual_atom; } static void virtual_atom_check_init (void) { if (!virtual_atom_hash) { gint i; virtual_atom_hash = g_hash_table_new (g_str_hash, g_str_equal); virtual_atom_array = g_ptr_array_new (); for (i = 0; i < G_N_ELEMENTS (XAtomsStrings); i++) { g_ptr_array_add (virtual_atom_array, XAtomsStrings[i]); g_hash_table_insert (virtual_atom_hash, XAtomsStrings[i], GUINT_TO_POINTER (i)); } } } GdkAtom gdk_atom_intern (const gchar *atom_name, gboolean only_if_exists) { GdkAtom result; virtual_atom_check_init (); result = GDK_POINTER_TO_ATOM (g_hash_table_lookup (virtual_atom_hash, atom_name)); if (!result) { result = INDEX_TO_ATOM (virtual_atom_array->len); g_ptr_array_add (virtual_atom_array, g_strdup (atom_name)); g_hash_table_insert (virtual_atom_hash, g_ptr_array_index (virtual_atom_array, ATOM_TO_INDEX (result)), GDK_ATOM_TO_POINTER (result)); } return result; } static G_CONST_RETURN char * get_atom_name (GdkAtom atom) { virtual_atom_check_init (); if (ATOM_TO_INDEX (atom) < virtual_atom_array->len) return g_ptr_array_index (virtual_atom_array, ATOM_TO_INDEX (atom)); else return NULL; } gchar * gdk_atom_name (GdkAtom atom) { return g_strdup (get_atom_name (atom)); } /** * gdk_x11_get_xatom_by_name: * @atom_name: a string * * Returns the X atom for GDK's default display corresponding to @atom_name. * This function caches the result, so if called repeatedly it is much * faster than XInternAtom(), which is a round trip to * the server each time. * * Return value: a X atom for GDK's default display. **/ Atom gdk_x11_get_xatom_by_name (const gchar *atom_name) { return gdk_x11_atom_to_xatom (gdk_atom_intern (atom_name, FALSE)); } /** * gdk_x11_get_xatom_name: * @xatom: an X atom for GDK's default display * * Returns the name of an X atom for GDK's default display. This * function is meant mainly for debugging, so for convenience, unlike * XAtomName() and gdk_atom_name(), the result * doesn't need to be freed. Also, this function will never return %NULL, * even if @xatom is invalid. * * Return value: name of the X atom; this string is owned by GTK+, * so it shouldn't be modifed or freed. **/ G_CONST_RETURN gchar * gdk_x11_get_xatom_name (Atom xatom) { return get_atom_name (gdk_x11_xatom_to_atom (xatom)); } gboolean gdk_property_get (GdkWindow *window, GdkAtom property, GdkAtom type, gulong offset, gulong length, gint pdelete, GdkAtom *actual_property_type, gint *actual_format_type, gint *actual_length, guchar **data) { Display *xdisplay; Window xwindow; Atom xproperty; Atom xtype; Atom ret_prop_type; gint ret_format; gulong ret_nitems; gulong ret_bytes_after; gulong ret_length; guchar *ret_data; g_return_val_if_fail (!window || GDK_IS_WINDOW (window), FALSE); xproperty = gdk_x11_atom_to_xatom (property); xtype = gdk_x11_atom_to_xatom (type); if (window) { if (GDK_WINDOW_DESTROYED (window)) return FALSE; xdisplay = GDK_WINDOW_XDISPLAY (window); xwindow = GDK_WINDOW_XID (window); } else { xdisplay = gdk_display; xwindow = _gdk_root_window; } ret_data = NULL; XGetWindowProperty (xdisplay, xwindow, xproperty, offset, (length + 3) / 4, pdelete, xtype, &ret_prop_type, &ret_format, &ret_nitems, &ret_bytes_after, &ret_data); if ((ret_prop_type == None) && (ret_format == 0)) { return FALSE; } if (actual_property_type) *actual_property_type = gdk_x11_xatom_to_atom (ret_prop_type); if (actual_format_type) *actual_format_type = ret_format; if ((type != AnyPropertyType) && (ret_prop_type != xtype)) { XFree (ret_data); g_warning("Couldn't match property type %s to %s\n", gdk_x11_get_xatom_name (ret_prop_type), gdk_x11_get_xatom_name (xtype)); return FALSE; } /* FIXME: ignoring bytes_after could have very bad effects */ if (data) { if (ret_prop_type == XA_ATOM || ret_prop_type == gdk_x11_get_xatom_by_name ("ATOM_PAIR")) { /* * data is an array of X atom, we need to convert it * to an array of GDK Atoms */ gint i; GdkAtom *ret_atoms = g_new (GdkAtom, ret_nitems); Atom *xatoms = (Atom *)ret_data; *data = (guchar *)ret_atoms; for (i = 0; i < ret_nitems; i++) ret_atoms[i] = gdk_x11_xatom_to_atom (xatoms[i]); } else { switch (ret_format) { case 8: ret_length = ret_nitems; break; case 16: ret_length = sizeof(short) * ret_nitems; break; case 32: ret_length = sizeof(long) * ret_nitems; break; default: g_warning ("unknown property return format: %d", ret_format); XFree (ret_data); return FALSE; } *data = g_new (guchar, ret_length); memcpy (*data, ret_data, ret_length); if (actual_length) *actual_length = ret_length; } } XFree (ret_data); return TRUE; } void gdk_property_change (GdkWindow *window, GdkAtom property, GdkAtom type, gint format, GdkPropMode mode, const guchar *data, gint nelements) { Display *xdisplay; Window xwindow; Atom xproperty; Atom xtype; g_return_if_fail (!window || GDK_IS_WINDOW (window)); xproperty = gdk_x11_atom_to_xatom (property); xtype = gdk_x11_atom_to_xatom (type); if (window) { if (GDK_WINDOW_DESTROYED (window)) return; xdisplay = GDK_WINDOW_XDISPLAY (window); xwindow = GDK_WINDOW_XID (window); } else { xdisplay = gdk_display; xwindow = _gdk_root_window; } if (xtype == XA_ATOM || xtype == gdk_x11_get_xatom_by_name ("ATOM_PAIR")) { /* * data is an array of GdkAtom, we need to convert it * to an array of X Atoms */ gint i; GdkAtom *atoms = (GdkAtom*) data; Atom *xatoms; xatoms = g_new (Atom, nelements); for (i = 0; i < nelements; i++) xatoms[i] = gdk_x11_atom_to_xatom (atoms[i]); XChangeProperty (xdisplay, xwindow, xproperty, xtype, format, mode, (guchar *)xatoms, nelements); g_free (xatoms); } else XChangeProperty (xdisplay, xwindow, xproperty, xtype, format, mode, (guchar *)data, nelements); } void gdk_property_delete (GdkWindow *window, GdkAtom property) { Display *xdisplay; Window xwindow; g_return_if_fail (!window || GDK_IS_WINDOW (window)); if (window) { if (GDK_WINDOW_DESTROYED (window)) return; xdisplay = GDK_WINDOW_XDISPLAY (window); xwindow = GDK_WINDOW_XID (window); } else { xdisplay = gdk_display; xwindow = _gdk_root_window; } XDeleteProperty (xdisplay, xwindow, gdk_x11_atom_to_xatom (property)); }