gtk/gdk/x11/gdkim-x11.c
Owen Taylor 425b9886c9 Start of integration of Erwann Chenede's multihead work from the
Thu Apr 25 16:51:40 2002  Owen Taylor  <otaylor@redhat.com>

        Start of integration of Erwann Chenede's multihead work
        from the gtk-multihead branch.

        * gdk/gdkdisplay.[ch] gdk/gdkscreen.[ch]
        gdk/x11/gdkdisplay-x11.[ch] gdk/x11/gdkscreen-x11.[ch]
        New classes representing a set of screens with attached
        input devices and a single contiguous area, respectively.

        * gdk/gdk.[ch] gdk/gdkinternals.h gdk/x11/gdkmain-x11.c:
        gdk/x11/gdkprivate-x11.h: Make the initialization interface
        simple _gdk_windowing_init() and do the rest in
        gdk_open_display() calls.

        * gdk/gdk.[ch]: Add gdk_parse_args() which can be used
        to do the display-independent part of initialization
        instead of gdk_init_[check].

        * gdk/gdkcursor.h gdk/gdkfont.h gdk/gdkkeys.h gdk/gdkpixmap.h
        gdk/gdkproperty.h gdk/gdkselection.h gdk/gdkwindow.h:
        Add multihead variants (_for_display(), for_screen()) of functions
        getting information specific to a particular screen screen or
        display.

        * gdk/gdkscreen.[ch]: Add gdk_screen__* variants of functions
        like gdk_rgb_get_colormap() that used to get/list global
        objects.

        * gdk/x11/gdkx.h: Add functions for converting GdkScreen
        and GdkDisplay into the X equivalents.

        * gdk/x11/gdkwindow-x11.c: Removed gdk_window_xid_at_coords()
        not in the headers and unused.

        * configure.in gdk/x11/{gxid.c,gxid_lib.[ch],gdkinput-gxi.c}:
        Remove gxid support ... has not been tested for a long time...
        "xfree" support is more portable to non XFree86.

        * gdk/**.h: Add a GDK_MULTIHEAD_SAFE define that can be
        used to turn off functions that are inherently non-multihead
        safe.

        * gdk/**.c: add GDK_NOTE(multihead, ...) calls when functions
        are used in non-multihead-safe ways.

        * gdk/*.c gdk/x11/*.c: Changes to make the internals of GDK
        multihead safe.
2002-04-25 22:29:14 +00:00

242 lines
5.7 KiB
C

/* 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 <locale.h>
#include <stdlib.h>
#include "gdkx.h"
#include "gdk.h" /* For gdk_flush() */
#include "gdkx.h"
#include "gdkpixmap.h"
#include "gdkinternals.h"
#include "gdkdisplay-x11.h"
#if HAVE_CONFIG_H
# include <config.h>
# if STDC_HEADERS
# include <string.h>
# endif
#endif
/* If this variable is FALSE, it indicates that we should
* avoid trying to use multibyte conversion functions and
* assume everything is 1-byte per character
*/
static gboolean gdk_use_mb;
void
_gdk_x11_initialize_locale (void)
{
wchar_t result;
gchar *current_locale;
static char *last_locale = NULL;
gdk_use_mb = FALSE;
current_locale = setlocale (LC_ALL, NULL);
if (last_locale && strcmp (last_locale, current_locale) == 0)
return;
g_free (last_locale);
last_locale = g_strdup (current_locale);
if (!XSupportsLocale ())
g_warning ("locale not supported by Xlib");
if (!XSetLocaleModifiers (""))
g_warning ("can not set locale modifiers");
if ((strcmp (current_locale, "C")) && (strcmp (current_locale, "POSIX")))
{
gdk_use_mb = TRUE;
#ifndef X_LOCALE
/* Detect ancient GNU libc, where mb == UTF8. Not useful unless it's
* really a UTF8 locale. The below still probably will
* screw up on Greek, Cyrillic, etc, encoded as UTF8.
*/
if ((MB_CUR_MAX == 2) &&
(mbstowcs (&result, "\xdd\xa5", 1) > 0) &&
result == 0x765)
{
if ((strlen (current_locale) < 4) ||
g_ascii_strcasecmp (current_locale + strlen(current_locale) - 4, "utf8"))
gdk_use_mb = FALSE;
}
#endif /* X_LOCALE */
}
GDK_NOTE (XIM,
g_message ("%s multi-byte string functions.",
gdk_use_mb ? "Using" : "Not using"));
return;
}
gchar*
gdk_set_locale (void)
{
if (!setlocale (LC_ALL,""))
g_warning ("locale not supported by C library");
_gdk_x11_initialize_locale ();
return setlocale (LC_ALL, NULL);
}
static GdkDisplay *
find_a_display ()
{
GdkDisplay *display = gdk_get_default_display ();
if (!display)
display = _gdk_displays->data;
return display;
}
/*
* gdk_wcstombs
*
* Returns a multi-byte string converted from the specified array
* of wide characters. The string is newly allocated. The array of
* wide characters must be null-terminated. If the conversion is
* failed, it returns NULL.
*/
gchar *
gdk_wcstombs (const GdkWChar *src)
{
gchar *mbstr;
if (gdk_use_mb)
{
GdkDisplay *display = find_a_display ();
Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
XTextProperty tpr;
if (sizeof(wchar_t) != sizeof(GdkWChar))
{
gint i;
wchar_t *src_alt;
for (i=0; src[i]; i++);
src_alt = g_new (wchar_t, i+1);
for (; i>=0; i--)
src_alt[i] = src[i];
if (XwcTextListToTextProperty (xdisplay, &src_alt, 1, XTextStyle, &tpr)
!= Success)
{
g_free (src_alt);
return NULL;
}
g_free (src_alt);
}
else
{
if (XwcTextListToTextProperty (xdisplay, (wchar_t**)&src, 1,
XTextStyle, &tpr) != Success)
{
return NULL;
}
}
/*
* We must copy the string into an area allocated by glib, because
* the string 'tpr.value' must be freed by XFree().
*/
mbstr = g_strdup(tpr.value);
XFree (tpr.value);
}
else
{
gint length = 0;
gint i;
while (src[length] != 0)
length++;
mbstr = g_new (gchar, length + 1);
for (i=0; i<length+1; i++)
mbstr[i] = src[i];
}
return mbstr;
}
/*
* gdk_mbstowcs
*
* Converts the specified string into wide characters, and, returns the
* number of wide characters written. The string 'src' must be
* null-terminated. If the conversion is failed, it returns -1.
*/
gint
gdk_mbstowcs (GdkWChar *dest, const gchar *src, gint dest_max)
{
if (gdk_use_mb)
{
GdkDisplay *display = find_a_display ();
Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
XTextProperty tpr;
wchar_t **wstrs, *wstr_src;
gint num_wstrs;
gint len_cpy;
if (XmbTextListToTextProperty (xdisplay, (char **)&src, 1, XTextStyle,
&tpr)
!= Success)
{
/* NoMem or LocaleNotSupp */
return -1;
}
if (XwcTextPropertyToTextList (xdisplay, &tpr, &wstrs, &num_wstrs)
!= Success)
{
/* InvalidChar */
XFree(tpr.value);
return -1;
}
XFree(tpr.value);
if (num_wstrs == 0)
return 0;
wstr_src = wstrs[0];
for (len_cpy=0; len_cpy<dest_max && wstr_src[len_cpy]; len_cpy++)
dest[len_cpy] = wstr_src[len_cpy];
XwcFreeStringList (wstrs);
return len_cpy;
}
else
{
gint i;
for (i=0; i<dest_max && src[i]; i++)
dest[i] = src[i];
return i;
}
}