gtk/gdk/gdkkeys.c

284 lines
8.6 KiB
C
Raw Normal View History

/* GDK - The GIMP Drawing Kit
* Copyright (C) 2000 Red Hat, Inc.
*
* 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 "gdkkeys.h"
#include <config.h>
enum {
DIRECTION_CHANGED,
LAST_SIGNAL
};
static void gdk_keymap_init (GdkKeymap *keymap);
static void gdk_keymap_class_init (GdkKeymapClass *klass);
static gpointer parent_class = NULL;
static guint signals[LAST_SIGNAL] = { 0 };
GType
gdk_keymap_get_type (void)
{
static GType object_type = 0;
if (!object_type)
{
static const GTypeInfo object_info =
{
sizeof (GdkKeymapClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gdk_keymap_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GdkKeymap),
0, /* n_preallocs */
(GInstanceInitFunc) gdk_keymap_init,
};
object_type = g_type_register_static (G_TYPE_OBJECT,
"GdkKeymap",
&object_info, 0);
}
return object_type;
}
static void
gdk_keymap_init (GdkKeymap *keymap)
{
}
static void
gdk_keymap_class_init (GdkKeymapClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
signals[DIRECTION_CHANGED] =
g_signal_new ("direction_changed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GdkKeymapClass, direction_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE,
0);
}
/* Other key-handling stuff
*/
#ifndef HAVE_XCONVERTCASE
#include "gdkkeysyms.h"
/* compatibility function from X11R6.3, since XConvertCase is not
* supplied by X11R5.
*/
/**
* gdk_keyval_convert_case:
* @symbol: a keyval
* @lower: return location for lowercase version of @symbol
* @upper: return location for uppercase version of @symbol
*
* Obtains the upper- and lower-case versions of the keyval @symbol.
* Examples of keyvals are #GDK_a, #GDK_Enter, #GDK_F1, etc.
*
**/
void
gdk_keyval_convert_case (guint symbol,
guint *lower,
guint *upper)
{
guint xlower = symbol;
guint xupper = symbol;
/* Check for directly encoded 24-bit UCS characters: */
if ((symbol & 0xff000000) == 0x01000000)
{
if (lower)
*lower = gdk_unicode_to_keyval (g_unichar_tolower (symbol & 0x00ffffff));
if (upper)
*upper = gdk_unicode_to_keyval (g_unichar_toupper (symbol & 0x00ffffff));
return;
}
switch (symbol >> 8)
{
case 0: /* Latin 1 */
if ((symbol >= GDK_A) && (symbol <= GDK_Z))
xlower += (GDK_a - GDK_A);
else if ((symbol >= GDK_a) && (symbol <= GDK_z))
xupper -= (GDK_a - GDK_A);
else if ((symbol >= GDK_Agrave) && (symbol <= GDK_Odiaeresis))
xlower += (GDK_agrave - GDK_Agrave);
else if ((symbol >= GDK_agrave) && (symbol <= GDK_odiaeresis))
xupper -= (GDK_agrave - GDK_Agrave);
else if ((symbol >= GDK_Ooblique) && (symbol <= GDK_Thorn))
xlower += (GDK_oslash - GDK_Ooblique);
else if ((symbol >= GDK_oslash) && (symbol <= GDK_thorn))
xupper -= (GDK_oslash - GDK_Ooblique);
break;
case 1: /* Latin 2 */
/* Assume the KeySym is a legal value (ignore discontinuities) */
if (symbol == GDK_Aogonek)
xlower = GDK_aogonek;
else if (symbol >= GDK_Lstroke && symbol <= GDK_Sacute)
xlower += (GDK_lstroke - GDK_Lstroke);
else if (symbol >= GDK_Scaron && symbol <= GDK_Zacute)
xlower += (GDK_scaron - GDK_Scaron);
else if (symbol >= GDK_Zcaron && symbol <= GDK_Zabovedot)
xlower += (GDK_zcaron - GDK_Zcaron);
else if (symbol == GDK_aogonek)
xupper = GDK_Aogonek;
else if (symbol >= GDK_lstroke && symbol <= GDK_sacute)
xupper -= (GDK_lstroke - GDK_Lstroke);
else if (symbol >= GDK_scaron && symbol <= GDK_zacute)
xupper -= (GDK_scaron - GDK_Scaron);
else if (symbol >= GDK_zcaron && symbol <= GDK_zabovedot)
xupper -= (GDK_zcaron - GDK_Zcaron);
else if (symbol >= GDK_Racute && symbol <= GDK_Tcedilla)
xlower += (GDK_racute - GDK_Racute);
else if (symbol >= GDK_racute && symbol <= GDK_tcedilla)
xupper -= (GDK_racute - GDK_Racute);
break;
case 2: /* Latin 3 */
/* Assume the KeySym is a legal value (ignore discontinuities) */
if (symbol >= GDK_Hstroke && symbol <= GDK_Hcircumflex)
xlower += (GDK_hstroke - GDK_Hstroke);
else if (symbol >= GDK_Gbreve && symbol <= GDK_Jcircumflex)
xlower += (GDK_gbreve - GDK_Gbreve);
else if (symbol >= GDK_hstroke && symbol <= GDK_hcircumflex)
xupper -= (GDK_hstroke - GDK_Hstroke);
else if (symbol >= GDK_gbreve && symbol <= GDK_jcircumflex)
xupper -= (GDK_gbreve - GDK_Gbreve);
else if (symbol >= GDK_Cabovedot && symbol <= GDK_Scircumflex)
xlower += (GDK_cabovedot - GDK_Cabovedot);
else if (symbol >= GDK_cabovedot && symbol <= GDK_scircumflex)
xupper -= (GDK_cabovedot - GDK_Cabovedot);
break;
case 3: /* Latin 4 */
/* Assume the KeySym is a legal value (ignore discontinuities) */
if (symbol >= GDK_Rcedilla && symbol <= GDK_Tslash)
xlower += (GDK_rcedilla - GDK_Rcedilla);
else if (symbol >= GDK_rcedilla && symbol <= GDK_tslash)
xupper -= (GDK_rcedilla - GDK_Rcedilla);
else if (symbol == GDK_ENG)
xlower = GDK_eng;
else if (symbol == GDK_eng)
xupper = GDK_ENG;
else if (symbol >= GDK_Amacron && symbol <= GDK_Umacron)
xlower += (GDK_amacron - GDK_Amacron);
else if (symbol >= GDK_amacron && symbol <= GDK_umacron)
xupper -= (GDK_amacron - GDK_Amacron);
break;
case 6: /* Cyrillic */
/* Assume the KeySym is a legal value (ignore discontinuities) */
if (symbol >= GDK_Serbian_DJE && symbol <= GDK_Serbian_DZE)
xlower -= (GDK_Serbian_DJE - GDK_Serbian_dje);
else if (symbol >= GDK_Serbian_dje && symbol <= GDK_Serbian_dze)
xupper += (GDK_Serbian_DJE - GDK_Serbian_dje);
else if (symbol >= GDK_Cyrillic_YU && symbol <= GDK_Cyrillic_HARDSIGN)
xlower -= (GDK_Cyrillic_YU - GDK_Cyrillic_yu);
else if (symbol >= GDK_Cyrillic_yu && symbol <= GDK_Cyrillic_hardsign)
xupper += (GDK_Cyrillic_YU - GDK_Cyrillic_yu);
break;
case 7: /* Greek */
/* Assume the KeySym is a legal value (ignore discontinuities) */
if (symbol >= GDK_Greek_ALPHAaccent && symbol <= GDK_Greek_OMEGAaccent)
xlower += (GDK_Greek_alphaaccent - GDK_Greek_ALPHAaccent);
else if (symbol >= GDK_Greek_alphaaccent && symbol <= GDK_Greek_omegaaccent &&
symbol != GDK_Greek_iotaaccentdieresis &&
symbol != GDK_Greek_upsilonaccentdieresis)
xupper -= (GDK_Greek_alphaaccent - GDK_Greek_ALPHAaccent);
else if (symbol >= GDK_Greek_ALPHA && symbol <= GDK_Greek_OMEGA)
xlower += (GDK_Greek_alpha - GDK_Greek_ALPHA);
else if (symbol >= GDK_Greek_alpha && symbol <= GDK_Greek_omega &&
symbol != GDK_Greek_finalsmallsigma)
xupper -= (GDK_Greek_alpha - GDK_Greek_ALPHA);
break;
}
if (lower)
*lower = xlower;
if (upper)
*upper = xupper;
}
#endif
guint
gdk_keyval_to_upper (guint keyval)
{
guint result;
gdk_keyval_convert_case (keyval, NULL, &result);
return result;
}
guint
gdk_keyval_to_lower (guint keyval)
{
guint result;
gdk_keyval_convert_case (keyval, &result, NULL);
return result;
}
gboolean
gdk_keyval_is_upper (guint keyval)
{
if (keyval)
{
guint upper_val = 0;
gdk_keyval_convert_case (keyval, NULL, &upper_val);
return upper_val == keyval;
}
return FALSE;
}
gboolean
gdk_keyval_is_lower (guint keyval)
{
if (keyval)
{
guint lower_val = 0;
gdk_keyval_convert_case (keyval, &lower_val, NULL);
return lower_val == keyval;
}
return FALSE;
}