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gtk2/gdk/x11/gdkkeys-x11.c
Matthias Clasen 03b179c5e8 Try harder to handle accelerators involving virtual modifiers 
This patch changes GDK to add all matching virtual modifiers in
the state field of the key event. The corresponding GTK+ change makes
use of a new GdkKeymap function to map virtual modifiers back to
real modifiers and detect conflicts while doing so.

This should fix bug 603190 and bug 427409.
2009-12-21 11:15:28 -05:00

1778 lines
50 KiB
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/* 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 "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include "gdk.h"
#include "gdkx.h"
#include "gdkprivate-x11.h"
#include "gdkinternals.h"
#include "gdkdisplay-x11.h"
#include "gdkkeysyms.h"
#include "gdkalias.h"
#ifdef HAVE_XKB
#include <X11/XKBlib.h>
/* OSF-4.0 is apparently missing this macro
*/
# ifndef XkbKeySymEntry
# define XkbKeySymEntry(d,k,sl,g) \
(XkbKeySym(d,k,((XkbKeyGroupsWidth(d,k)*(g))+(sl))))
# endif
#endif /* HAVE_XKB */
typedef struct _GdkKeymapX11 GdkKeymapX11;
typedef struct _GdkKeymapClass GdkKeymapX11Class;
#define GDK_TYPE_KEYMAP_X11 (gdk_keymap_x11_get_type ())
#define GDK_KEYMAP_X11(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_KEYMAP_X11, GdkKeymapX11))
#define GDK_IS_KEYMAP_X11(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_KEYMAP_X11))
typedef struct _DirectionCacheEntry DirectionCacheEntry;
struct _DirectionCacheEntry
{
guint serial;
Atom group_atom;
PangoDirection direction;
};
struct _GdkKeymapX11
{
GdkKeymap parent_instance;
gint min_keycode;
gint max_keycode;
KeySym* keymap;
gint keysyms_per_keycode;
XModifierKeymap* mod_keymap;
guint lock_keysym;
GdkModifierType group_switch_mask;
GdkModifierType num_lock_mask;
GdkModifierType modmap[8];
PangoDirection current_direction;
guint sun_keypad : 1;
guint have_direction : 1;
guint caps_lock_state : 1;
guint current_serial;
#ifdef HAVE_XKB
XkbDescPtr xkb_desc;
/* We cache the directions */
Atom current_group_atom;
guint current_cache_serial;
/* A cache of size four should be more than enough, people usually
* have two groups around, and the xkb limit is four. It still
* works correct for more than four groups. It's just the
* cache.
*/
DirectionCacheEntry group_direction_cache[4];
#endif
};
#define KEYMAP_USE_XKB(keymap) GDK_DISPLAY_X11 ((keymap)->display)->use_xkb
#define KEYMAP_XDISPLAY(keymap) GDK_DISPLAY_XDISPLAY ((keymap)->display)
static GType gdk_keymap_x11_get_type (void);
static void gdk_keymap_x11_class_init (GdkKeymapX11Class *klass);
static void gdk_keymap_x11_init (GdkKeymapX11 *keymap);
static void gdk_keymap_x11_finalize (GObject *object);
static GdkKeymapClass *parent_class = NULL;
static GType
gdk_keymap_x11_get_type (void)
{
static GType object_type = 0;
if (!object_type)
{
const GTypeInfo object_info =
{
sizeof (GdkKeymapClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gdk_keymap_x11_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GdkKeymapX11),
0, /* n_preallocs */
(GInstanceInitFunc) gdk_keymap_x11_init,
};
object_type = g_type_register_static (GDK_TYPE_KEYMAP,
g_intern_static_string ("GdkKeymapX11"),
&object_info, 0);
}
return object_type;
}
static void
gdk_keymap_x11_class_init (GdkKeymapX11Class *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gdk_keymap_x11_finalize;
}
static void
gdk_keymap_x11_init (GdkKeymapX11 *keymap)
{
keymap->min_keycode = 0;
keymap->max_keycode = 0;
keymap->keymap = NULL;
keymap->keysyms_per_keycode = 0;
keymap->mod_keymap = NULL;
keymap->num_lock_mask = 0;
keymap->sun_keypad = FALSE;
keymap->group_switch_mask = 0;
keymap->lock_keysym = GDK_Caps_Lock;
keymap->have_direction = FALSE;
keymap->current_serial = 0;
#ifdef HAVE_XKB
keymap->xkb_desc = NULL;
keymap->current_group_atom = 0;
keymap->current_cache_serial = 0;
#endif
}
static void
gdk_keymap_x11_finalize (GObject *object)
{
GdkKeymapX11 *keymap_x11 = GDK_KEYMAP_X11 (object);
if (keymap_x11->keymap)
XFree (keymap_x11->keymap);
if (keymap_x11->mod_keymap)
XFreeModifiermap (keymap_x11->mod_keymap);
#ifdef HAVE_XKB
if (keymap_x11->xkb_desc)
XkbFreeKeyboard (keymap_x11->xkb_desc, XkbAllComponentsMask, True);
#endif
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static inline void
update_keyrange (GdkKeymapX11 *keymap_x11)
{
if (keymap_x11->max_keycode == 0)
XDisplayKeycodes (KEYMAP_XDISPLAY (GDK_KEYMAP (keymap_x11)),
&keymap_x11->min_keycode, &keymap_x11->max_keycode);
}
#ifdef HAVE_XKB
static void
update_modmap (Display *display,
GdkKeymapX11 *keymap_x11)
{
static struct {
const gchar *name;
Atom atom;
GdkModifierType mask;
} vmods[] = {
{ "Meta", 0, GDK_META_MASK },
{ "Super", 0, GDK_SUPER_MASK },
{ "Hyper", 0, GDK_HYPER_MASK },
{ NULL, 0, 0 }
};
gint i, j, k;
if (!vmods[0].atom)
for (i = 0; vmods[i].name; i++)
vmods[i].atom = XInternAtom (display, vmods[i].name, FALSE);
for (i = 0; i < 8; i++)
keymap_x11->modmap[i] = 1 << i;
for (i = 0; i < XkbNumVirtualMods; i++)
{
for (j = 0; vmods[j].atom; j++)
{
if (keymap_x11->xkb_desc->names->vmods[i] == vmods[j].atom)
{
for (k = 0; k < 8; k++)
{
if (keymap_x11->xkb_desc->server->vmods[i] & (1 << k))
keymap_x11->modmap[k] |= vmods[j].mask;
}
}
}
}
}
static XkbDescPtr
get_xkb (GdkKeymapX11 *keymap_x11)
{
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (GDK_KEYMAP (keymap_x11)->display);
Display *xdisplay = display_x11->xdisplay;
update_keyrange (keymap_x11);
if (keymap_x11->xkb_desc == NULL)
{
keymap_x11->xkb_desc = XkbGetMap (xdisplay, XkbKeySymsMask | XkbKeyTypesMask | XkbModifierMapMask | XkbVirtualModsMask, XkbUseCoreKbd);
if (keymap_x11->xkb_desc == NULL)
{
g_error ("Failed to get keymap");
return NULL;
}
XkbGetNames (xdisplay, XkbGroupNamesMask | XkbVirtualModNamesMask, keymap_x11->xkb_desc);
update_modmap (xdisplay, keymap_x11);
}
else if (keymap_x11->current_serial != display_x11->keymap_serial)
{
XkbGetUpdatedMap (xdisplay, XkbKeySymsMask | XkbKeyTypesMask | XkbModifierMapMask | XkbVirtualModsMask,
keymap_x11->xkb_desc);
XkbGetNames (xdisplay, XkbGroupNamesMask | XkbVirtualModNamesMask, keymap_x11->xkb_desc);
update_modmap (xdisplay, keymap_x11);
}
keymap_x11->current_serial = display_x11->keymap_serial;
return keymap_x11->xkb_desc;
}
#endif /* HAVE_XKB */
/* Whether we were able to turn on detectable-autorepeat using
* XkbSetDetectableAutorepeat. If FALSE, we'll fall back
* to checking the next event with XPending().
*/
/**
* gdk_keymap_get_for_display:
* @display: the #GdkDisplay.
* @returns: the #GdkKeymap attached to @display.
*
* Returns the #GdkKeymap attached to @display.
*
* Since: 2.2
**/
GdkKeymap*
gdk_keymap_get_for_display (GdkDisplay *display)
{
GdkDisplayX11 *display_x11;
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
display_x11 = GDK_DISPLAY_X11 (display);
if (!display_x11->keymap)
display_x11->keymap = g_object_new (gdk_keymap_x11_get_type (), NULL);
display_x11->keymap->display = display;
return display_x11->keymap;
}
/* Find the index of the group/level pair within the keysyms for a key.
* We round up the number of keysyms per keycode to the next even number,
* otherwise we lose a whole group of keys
*/
#define KEYSYM_INDEX(keymap_impl, group, level) \
(2 * ((group) % (gint)((keymap_impl->keysyms_per_keycode + 1) / 2)) + (level))
#define KEYSYM_IS_KEYPAD(s) (((s) >= 0xff80 && (s) <= 0xffbd) || \
((s) >= 0x11000000 && (s) <= 0x1100ffff))
static gint
get_symbol (const KeySym *syms,
GdkKeymapX11 *keymap_x11,
gint group,
gint level)
{
gint index;
index = KEYSYM_INDEX(keymap_x11, group, level);
if (index >= keymap_x11->keysyms_per_keycode)
return NoSymbol;
return syms[index];
}
static void
set_symbol (KeySym *syms,
GdkKeymapX11 *keymap_x11,
gint group,
gint level,
KeySym sym)
{
gint index;
index = KEYSYM_INDEX(keymap_x11, group, level);
if (index >= keymap_x11->keysyms_per_keycode)
return;
syms[index] = sym;
}
static void
update_keymaps (GdkKeymapX11 *keymap_x11)
{
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (GDK_KEYMAP (keymap_x11)->display);
Display *xdisplay = display_x11->xdisplay;
#ifdef HAVE_XKB
g_assert (!KEYMAP_USE_XKB (GDK_KEYMAP (keymap_x11)));
#endif
if (keymap_x11->keymap == NULL ||
keymap_x11->current_serial != display_x11->keymap_serial)
{
gint i;
gint map_size;
gint keycode;
keymap_x11->current_serial = display_x11->keymap_serial;
update_keyrange (keymap_x11);
if (keymap_x11->keymap)
XFree (keymap_x11->keymap);
if (keymap_x11->mod_keymap)
XFreeModifiermap (keymap_x11->mod_keymap);
keymap_x11->keymap = XGetKeyboardMapping (xdisplay, keymap_x11->min_keycode,
keymap_x11->max_keycode - keymap_x11->min_keycode + 1,
&keymap_x11->keysyms_per_keycode);
/* GDK_ISO_Left_Tab, as usually configured through XKB, really messes
* up the whole idea of "consumed modifiers" because shift is consumed.
* However, <shift>Tab is not usually GDK_ISO_Left_Tab without XKB,
* we we fudge the map here.
*/
keycode = keymap_x11->min_keycode;
while (keycode <= keymap_x11->max_keycode)
{
KeySym *syms = keymap_x11->keymap + (keycode - keymap_x11->min_keycode) * keymap_x11->keysyms_per_keycode;
/* Check both groups */
for (i = 0 ; i < 2 ; i++)
{
if (get_symbol (syms, keymap_x11, i, 0) == GDK_Tab)
set_symbol (syms, keymap_x11, i, 1, GDK_ISO_Left_Tab);
}
/*
* If there is one keysym and the key symbol has upper and lower
* case variants fudge the keymap
*/
if (get_symbol (syms, keymap_x11, 0, 1) == 0)
{
guint lower;
guint upper;
gdk_keyval_convert_case (get_symbol (syms, keymap_x11, 0, 0), &lower, &upper);
if (lower != upper)
{
set_symbol (syms, keymap_x11, 0, 0, lower);
set_symbol (syms, keymap_x11, 0, 1, upper);
}
}
++keycode;
}
keymap_x11->mod_keymap = XGetModifierMapping (xdisplay);
keymap_x11->lock_keysym = GDK_VoidSymbol;
keymap_x11->group_switch_mask = 0;
keymap_x11->num_lock_mask = 0;
for (i = 0; i < 8; i++)
keymap_x11->modmap[i] = 1 << i;
/* There are 8 sets of modifiers, with each set containing
* max_keypermod keycodes.
*/
map_size = 8 * keymap_x11->mod_keymap->max_keypermod;
for (i = 0; i < map_size; i++)
{
/* Get the key code at this point in the map. */
gint keycode = keymap_x11->mod_keymap->modifiermap[i];
gint j;
KeySym *syms;
guint mask;
/* Ignore invalid keycodes. */
if (keycode < keymap_x11->min_keycode ||
keycode > keymap_x11->max_keycode)
continue;
syms = keymap_x11->keymap + (keycode - keymap_x11->min_keycode) * keymap_x11->keysyms_per_keycode;
mask = 0;
for (j = 0; j < keymap_x11->keysyms_per_keycode; j++)
{
if (syms[j] == GDK_Meta_L ||
syms[j] == GDK_Meta_R)
mask |= GDK_META_MASK;
else if (syms[j] == GDK_Hyper_L ||
syms[j] == GDK_Hyper_R)
mask |= GDK_HYPER_MASK;
else if (syms[j] == GDK_Super_L ||
syms[j] == GDK_Super_R)
mask |= GDK_SUPER_MASK;
}
keymap_x11->modmap[i/keymap_x11->mod_keymap->max_keypermod] |= mask;
/* The fourth modifier, GDK_MOD1_MASK is 1 << 3.
* Each group of max_keypermod entries refers to the same modifier.
*/
mask = 1 << (i / keymap_x11->mod_keymap->max_keypermod);
switch (mask)
{
case GDK_LOCK_MASK:
/* Get the Lock keysym. If any keysym bound to the Lock modifier
* is Caps_Lock, we will interpret the modifier as Caps_Lock;
* otherwise, if any is bound to Shift_Lock, we will interpret
* the modifier as Shift_Lock. Otherwise, the lock modifier
* has no effect.
*/
for (j = 0; j < keymap_x11->keysyms_per_keycode; j++)
{
if (syms[j] == GDK_Caps_Lock)
keymap_x11->lock_keysym = GDK_Caps_Lock;
else if (syms[j] == GDK_Shift_Lock &&
keymap_x11->lock_keysym == GDK_VoidSymbol)
keymap_x11->lock_keysym = GDK_Shift_Lock;
}
break;
case GDK_CONTROL_MASK:
case GDK_SHIFT_MASK:
case GDK_MOD1_MASK:
/* Some keyboard maps are known to map Mode_Switch as an
* extra Mod1 key. In circumstances like that, it won't be
* used to switch groups.
*/
break;
default:
/* Find the Mode_Switch and Num_Lock modifiers. */
for (j = 0; j < keymap_x11->keysyms_per_keycode; j++)
{
if (syms[j] == GDK_Mode_switch)
{
/* This modifier swaps groups */
keymap_x11->group_switch_mask |= mask;
}
else if (syms[j] == GDK_Num_Lock)
{
/* This modifier is used for Num_Lock */
keymap_x11->num_lock_mask |= mask;
}
}
break;
}
}
/* Hack: The Sun X server puts the keysym to use when the Num Lock
* modifier is on in the third element of the keysym array, instead
* of the second.
*/
if ((strcmp (ServerVendor (xdisplay), "Sun Microsystems, Inc.") == 0) &&
(keymap_x11->keysyms_per_keycode > 2))
keymap_x11->sun_keypad = TRUE;
else
keymap_x11->sun_keypad = FALSE;
}
}
static const KeySym*
get_keymap (GdkKeymapX11 *keymap_x11)
{
update_keymaps (keymap_x11);
return keymap_x11->keymap;
}
#define GET_EFFECTIVE_KEYMAP(keymap) get_effective_keymap ((keymap), G_STRFUNC)
static GdkKeymap *
get_effective_keymap (GdkKeymap *keymap,
const char *function)
{
if (!keymap)
{
GDK_NOTE (MULTIHEAD,
g_message ("reverting to default display keymap in %s",
function));
return gdk_keymap_get_default ();
}
return keymap;
}
#if HAVE_XKB
static PangoDirection
get_direction (XkbDescRec *xkb,
gint group)
{
gint code;
gint rtl_minus_ltr = 0; /* total number of RTL keysyms minus LTR ones */
for (code = xkb->min_key_code; code <= xkb->max_key_code; code++)
{
gint level = 0;
KeySym sym = XkbKeySymEntry (xkb, code, level, group);
PangoDirection dir = pango_unichar_direction (gdk_keyval_to_unicode (sym));
switch (dir)
{
case PANGO_DIRECTION_RTL:
rtl_minus_ltr++;
break;
case PANGO_DIRECTION_LTR:
rtl_minus_ltr--;
break;
default:
break;
}
}
if (rtl_minus_ltr > 0)
return PANGO_DIRECTION_RTL;
else
return PANGO_DIRECTION_LTR;
}
static PangoDirection
get_direction_from_cache (GdkKeymapX11 *keymap_x11,
XkbDescPtr xkb,
gint group)
{
Atom group_atom = xkb->names->groups[group];
gboolean cache_hit = FALSE;
DirectionCacheEntry *cache = keymap_x11->group_direction_cache;
PangoDirection direction = PANGO_DIRECTION_NEUTRAL;
gint i;
if (keymap_x11->have_direction)
{
/* lookup in cache */
for (i = 0; i < G_N_ELEMENTS (keymap_x11->group_direction_cache); i++)
{
if (cache[i].group_atom == group_atom)
{
cache_hit = TRUE;
cache[i].serial = keymap_x11->current_cache_serial++; /* freshen */
direction = cache[i].direction;
group_atom = cache[i].group_atom;
break;
}
}
}
else
{
/* initialize cache */
for (i = 0; i < G_N_ELEMENTS (keymap_x11->group_direction_cache); i++)
{
cache[i].group_atom = 0;
cache[i].serial = keymap_x11->current_cache_serial;
}
keymap_x11->current_cache_serial++;
}
/* insert in cache */
if (!cache_hit)
{
gint oldest = 0;
direction = get_direction (xkb, group);
/* remove the oldest entry */
for (i = 0; i < G_N_ELEMENTS (keymap_x11->group_direction_cache); i++)
{
if (cache[i].serial < cache[oldest].serial)
oldest = i;
}
cache[oldest].group_atom = group_atom;
cache[oldest].direction = direction;
cache[oldest].serial = keymap_x11->current_cache_serial++;
}
return direction;
}
static int
get_num_groups (GdkKeymap *keymap,
XkbDescPtr xkb)
{
Display *display = KEYMAP_XDISPLAY (keymap);
XkbGetControls(display, XkbSlowKeysMask, xkb);
XkbGetUpdatedMap (display, XkbKeySymsMask | XkbKeyTypesMask |
XkbModifierMapMask | XkbVirtualModsMask, xkb);
return xkb->ctrls->num_groups;
}
static gboolean
update_direction (GdkKeymapX11 *keymap_x11,
gint group)
{
XkbDescPtr xkb = get_xkb (keymap_x11);
Atom group_atom;
gboolean had_direction;
PangoDirection old_direction;
had_direction = keymap_x11->have_direction;
old_direction = keymap_x11->current_direction;
group_atom = xkb->names->groups[group];
/* a group change? */
if (!keymap_x11->have_direction || keymap_x11->current_group_atom != group_atom)
{
keymap_x11->current_direction = get_direction_from_cache (keymap_x11, xkb, group);
keymap_x11->current_group_atom = group_atom;
keymap_x11->have_direction = TRUE;
}
return !had_direction || old_direction != keymap_x11->current_direction;
}
static gboolean
update_lock_state (GdkKeymapX11 *keymap_x11,
gint locked_mods)
{
gboolean caps_lock_state;
caps_lock_state = keymap_x11->caps_lock_state;
keymap_x11->caps_lock_state = (locked_mods & GDK_LOCK_MASK) != 0;
return caps_lock_state != keymap_x11->caps_lock_state;
}
/* keep this in sync with the XkbSelectEventDetails() call
* in gdk_display_open()
*/
void
_gdk_keymap_state_changed (GdkDisplay *display,
XEvent *xevent)
{
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
XkbEvent *xkb_event = (XkbEvent *)xevent;
if (display_x11->keymap)
{
GdkKeymapX11 *keymap_x11 = GDK_KEYMAP_X11 (display_x11->keymap);
if (update_direction (keymap_x11, XkbStateGroup (&xkb_event->state)))
g_signal_emit_by_name (keymap_x11, "direction-changed");
if (update_lock_state (keymap_x11, xkb_event->state.locked_mods))
g_signal_emit_by_name (keymap_x11, "state-changed");
}
}
#endif /* HAVE_XKB */
void
_gdk_keymap_keys_changed (GdkDisplay *display)
{
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
++display_x11->keymap_serial;
if (display_x11->keymap)
g_signal_emit_by_name (display_x11->keymap, "keys_changed", 0);
}
/**
* gdk_keymap_get_direction:
* @keymap: a #GdkKeymap or %NULL to use the default keymap
*
* Returns the direction of effective layout of the keymap.
*
* Returns: %PANGO_DIRECTION_LTR or %PANGO_DIRECTION_RTL
* if it can determine the direction. %PANGO_DIRECTION_NEUTRAL
* otherwise.
**/
PangoDirection
gdk_keymap_get_direction (GdkKeymap *keymap)
{
keymap = GET_EFFECTIVE_KEYMAP (keymap);
#if HAVE_XKB
if (KEYMAP_USE_XKB (keymap))
{
GdkKeymapX11 *keymap_x11 = GDK_KEYMAP_X11 (keymap);
if (!keymap_x11->have_direction)
{
GdkDisplay *display = GDK_KEYMAP (keymap_x11)->display;
XkbStateRec state_rec;
XkbGetState (GDK_DISPLAY_XDISPLAY (display), XkbUseCoreKbd,
&state_rec);
update_direction (keymap_x11, XkbStateGroup (&state_rec));
}
return keymap_x11->current_direction;
}
else
#endif /* HAVE_XKB */
return PANGO_DIRECTION_NEUTRAL;
}
/**
* gdk_keymap_have_bidi_layouts:
* @keymap: a #GdkKeymap or %NULL to use the default keymap
*
* Determines if keyboard layouts for both right-to-left and left-to-right
* languages are in use.
*
* Returns: %TRUE if there are layouts in both directions, %FALSE otherwise
*
* Since: 2.12
**/
gboolean
gdk_keymap_have_bidi_layouts (GdkKeymap *keymap)
{
keymap = GET_EFFECTIVE_KEYMAP (keymap);
#if HAVE_XKB
if (KEYMAP_USE_XKB (keymap))
{
GdkKeymapX11 *keymap_x11 = GDK_KEYMAP_X11 (keymap);
XkbDescPtr xkb = get_xkb (keymap_x11);
int num_groups = get_num_groups (keymap, xkb);
int i;
gboolean have_ltr_keyboard = FALSE;
gboolean have_rtl_keyboard = FALSE;
for (i = 0; i < num_groups; i++)
{
if (get_direction_from_cache (keymap_x11, xkb, i) == PANGO_DIRECTION_RTL)
have_rtl_keyboard = TRUE;
else
have_ltr_keyboard = TRUE;
}
return have_ltr_keyboard && have_rtl_keyboard;
}
else
#endif /* HAVE_XKB */
return FALSE;
}
/**
* gdk_keymap_get_caps_lock_state:
* @keymap: a #GdkKeymap
*
* Returns whether the Caps Lock modifer is locked.
*
* Returns: %TRUE if Caps Lock is on
*
* Since: 2.16
*/
gboolean
gdk_keymap_get_caps_lock_state (GdkKeymap *keymap)
{
GdkKeymapX11 *keymap_x11;
keymap = GET_EFFECTIVE_KEYMAP (keymap);
keymap_x11 = GDK_KEYMAP_X11 (keymap);
return keymap_x11->caps_lock_state;
}
/**
* gdk_keymap_get_entries_for_keyval:
* @keymap: (allow-none): a #GdkKeymap, or %NULL to use the default keymap
* @keyval: a keyval, such as %GDK_a, %GDK_Up, %GDK_Return, etc.
* @keys: (out): return location for an array of #GdkKeymapKey
* @n_keys: (out): return location for number of elements in returned array
*
* Obtains a list of keycode/group/level combinations that will
* generate @keyval. Groups and levels are two kinds of keyboard mode;
* in general, the level determines whether the top or bottom symbol
* on a key is used, and the group determines whether the left or
* right symbol is used. On US keyboards, the shift key changes the
* keyboard level, and there are no groups. A group switch key might
* convert a keyboard between Hebrew to English modes, for example.
* #GdkEventKey contains a %group field that indicates the active
* keyboard group. The level is computed from the modifier mask.
* The returned array should be freed
* with g_free().
*
* Return value: %TRUE if keys were found and returned
**/
gboolean
gdk_keymap_get_entries_for_keyval (GdkKeymap *keymap,
guint keyval,
GdkKeymapKey **keys,
gint *n_keys)
{
GArray *retval;
GdkKeymapX11 *keymap_x11;
g_return_val_if_fail (keymap == NULL || GDK_IS_KEYMAP (keymap), FALSE);
g_return_val_if_fail (keys != NULL, FALSE);
g_return_val_if_fail (n_keys != NULL, FALSE);
g_return_val_if_fail (keyval != 0, FALSE);
keymap = GET_EFFECTIVE_KEYMAP (keymap);
keymap_x11 = GDK_KEYMAP_X11 (keymap);
retval = g_array_new (FALSE, FALSE, sizeof (GdkKeymapKey));
#ifdef HAVE_XKB
if (KEYMAP_USE_XKB (keymap))
{
/* See sec 15.3.4 in XKB docs */
XkbDescRec *xkb = get_xkb (keymap_x11);
gint keycode;
keycode = keymap_x11->min_keycode;
while (keycode <= keymap_x11->max_keycode)
{
gint max_shift_levels = XkbKeyGroupsWidth (xkb, keycode); /* "key width" */
gint group = 0;
gint level = 0;
gint total_syms = XkbKeyNumSyms (xkb, keycode);
gint i = 0;
KeySym *entry;
/* entry is an array with all syms for group 0, all
* syms for group 1, etc. and for each group the
* shift level syms are in order
*/
entry = XkbKeySymsPtr (xkb, keycode);
while (i < total_syms)
{
/* check out our cool loop invariant */
g_assert (i == (group * max_shift_levels + level));
if (entry[i] == keyval)
{
/* Found a match */
GdkKeymapKey key;
key.keycode = keycode;
key.group = group;
key.level = level;
g_array_append_val (retval, key);
g_assert (XkbKeySymEntry (xkb, keycode, level, group) ==
keyval);
}
++level;
if (level == max_shift_levels)
{
level = 0;
++group;
}
++i;
}
++keycode;
}
}
else
#endif
{
const KeySym *map = get_keymap (keymap_x11);
gint keycode;
keycode = keymap_x11->min_keycode;
while (keycode <= keymap_x11->max_keycode)
{
const KeySym *syms = map + (keycode - keymap_x11->min_keycode) * keymap_x11->keysyms_per_keycode;
gint i = 0;
while (i < keymap_x11->keysyms_per_keycode)
{
if (syms[i] == keyval)
{
/* found a match */
GdkKeymapKey key;
key.keycode = keycode;
/* The "classic" non-XKB keymap has 2 levels per group */
key.group = i / 2;
key.level = i % 2;
g_array_append_val (retval, key);
}
++i;
}
++keycode;
}
}
if (retval->len > 0)
{
*keys = (GdkKeymapKey*) retval->data;
*n_keys = retval->len;
}
else
{
*keys = NULL;
*n_keys = 0;
}
g_array_free (retval, retval->len > 0 ? FALSE : TRUE);
return *n_keys > 0;
}
/**
* gdk_keymap_get_entries_for_keycode:
* @keymap: (allow-none): a #GdkKeymap or %NULL to use the default keymap
* @hardware_keycode: a keycode
* @keys: (out): return location for array of #GdkKeymapKey, or %NULL
* @keyvals: (out): return location for array of keyvals, or %NULL
* @n_entries: length of @keys and @keyvals
*
* Returns the keyvals bound to @hardware_keycode.
* The Nth #GdkKeymapKey in @keys is bound to the Nth
* keyval in @keyvals. Free the returned arrays with g_free().
* When a keycode is pressed by the user, the keyval from
* this list of entries is selected by considering the effective
* keyboard group and level. See gdk_keymap_translate_keyboard_state().
*
* Returns: %TRUE if there were any entries
**/
gboolean
gdk_keymap_get_entries_for_keycode (GdkKeymap *keymap,
guint hardware_keycode,
GdkKeymapKey **keys,
guint **keyvals,
gint *n_entries)
{
GdkKeymapX11 *keymap_x11;
GArray *key_array;
GArray *keyval_array;
g_return_val_if_fail (keymap == NULL || GDK_IS_KEYMAP (keymap), FALSE);
g_return_val_if_fail (n_entries != NULL, FALSE);
keymap = GET_EFFECTIVE_KEYMAP (keymap);
keymap_x11 = GDK_KEYMAP_X11 (keymap);
update_keyrange (keymap_x11);
if (hardware_keycode < keymap_x11->min_keycode ||
hardware_keycode > keymap_x11->max_keycode)
{
if (keys)
*keys = NULL;
if (keyvals)
*keyvals = NULL;
*n_entries = 0;
return FALSE;
}
if (keys)
key_array = g_array_new (FALSE, FALSE, sizeof (GdkKeymapKey));
else
key_array = NULL;
if (keyvals)
keyval_array = g_array_new (FALSE, FALSE, sizeof (guint));
else
keyval_array = NULL;
#ifdef HAVE_XKB
if (KEYMAP_USE_XKB (keymap))
{
/* See sec 15.3.4 in XKB docs */
XkbDescRec *xkb = get_xkb (keymap_x11);
gint max_shift_levels;
gint group = 0;
gint level = 0;
gint total_syms;
gint i = 0;
KeySym *entry;
max_shift_levels = XkbKeyGroupsWidth (xkb, hardware_keycode); /* "key width" */
total_syms = XkbKeyNumSyms (xkb, hardware_keycode);
/* entry is an array with all syms for group 0, all
* syms for group 1, etc. and for each group the
* shift level syms are in order
*/
entry = XkbKeySymsPtr (xkb, hardware_keycode);
while (i < total_syms)
{
/* check out our cool loop invariant */
g_assert (i == (group * max_shift_levels + level));
if (key_array)
{
GdkKeymapKey key;
key.keycode = hardware_keycode;
key.group = group;
key.level = level;
g_array_append_val (key_array, key);
}
if (keyval_array)
g_array_append_val (keyval_array, entry[i]);
++level;
if (level == max_shift_levels)
{
level = 0;
++group;
}
++i;
}
}
else
#endif
{
const KeySym *map = get_keymap (keymap_x11);
const KeySym *syms;
gint i = 0;
syms = map + (hardware_keycode - keymap_x11->min_keycode) * keymap_x11->keysyms_per_keycode;
while (i < keymap_x11->keysyms_per_keycode)
{
if (key_array)
{
GdkKeymapKey key;
key.keycode = hardware_keycode;
/* The "classic" non-XKB keymap has 2 levels per group */
key.group = i / 2;
key.level = i % 2;
g_array_append_val (key_array, key);
}
if (keyval_array)
g_array_append_val (keyval_array, syms[i]);
++i;
}
}
*n_entries = 0;
if (keys)
{
*n_entries = key_array->len;
*keys = (GdkKeymapKey*) g_array_free (key_array, FALSE);
}
if (keyvals)
{
*n_entries = keyval_array->len;
*keyvals = (guint*) g_array_free (keyval_array, FALSE);
}
return *n_entries > 0;
}
/**
* gdk_keymap_lookup_key:
* @keymap: a #GdkKeymap or %NULL to use the default keymap
* @key: a #GdkKeymapKey with keycode, group, and level initialized
*
* Looks up the keyval mapped to a keycode/group/level triplet.
* If no keyval is bound to @key, returns 0. For normal user input,
* you want to use gdk_keymap_translate_keyboard_state() instead of
* this function, since the effective group/level may not be
* the same as the current keyboard state.
*
* Return value: a keyval, or 0 if none was mapped to the given @key
**/
guint
gdk_keymap_lookup_key (GdkKeymap *keymap,
const GdkKeymapKey *key)
{
GdkKeymapX11 *keymap_x11;
g_return_val_if_fail (keymap == NULL || GDK_IS_KEYMAP (keymap), 0);
g_return_val_if_fail (key != NULL, 0);
g_return_val_if_fail (key->group < 4, 0);
keymap = GET_EFFECTIVE_KEYMAP (keymap);
keymap_x11 = GDK_KEYMAP_X11 (keymap);
#ifdef HAVE_XKB
if (KEYMAP_USE_XKB (keymap))
{
XkbDescRec *xkb = get_xkb (keymap_x11);
return XkbKeySymEntry (xkb, key->keycode, key->level, key->group);
}
else
#endif
{
const KeySym *map = get_keymap (keymap_x11);
const KeySym *syms = map + (key->keycode - keymap_x11->min_keycode) * keymap_x11->keysyms_per_keycode;
return get_symbol (syms, keymap_x11, key->group, key->level);
}
}
#ifdef HAVE_XKB
/* This is copied straight from XFree86 Xlib, to:
* - add the group and level return.
* - change the interpretation of mods_rtrn as described
* in the docs for gdk_keymap_translate_keyboard_state()
* It's unchanged for ease of diff against the Xlib sources; don't
* reformat it.
*/
static Bool
MyEnhancedXkbTranslateKeyCode(register XkbDescPtr xkb,
KeyCode key,
register unsigned int mods,
unsigned int * mods_rtrn,
KeySym * keysym_rtrn,
int * group_rtrn,
int * level_rtrn)
{
XkbKeyTypeRec *type;
int col,nKeyGroups;
unsigned preserve,effectiveGroup;
KeySym *syms;
if (mods_rtrn!=NULL)
*mods_rtrn = 0;
nKeyGroups= XkbKeyNumGroups(xkb,key);
if ((!XkbKeycodeInRange(xkb,key))||(nKeyGroups==0)) {
if (keysym_rtrn!=NULL)
*keysym_rtrn = NoSymbol;
return False;
}
syms = XkbKeySymsPtr(xkb,key);
/* find the offset of the effective group */
col = 0;
effectiveGroup= XkbGroupForCoreState(mods);
if ( effectiveGroup>=nKeyGroups ) {
unsigned groupInfo= XkbKeyGroupInfo(xkb,key);
switch (XkbOutOfRangeGroupAction(groupInfo)) {
default:
effectiveGroup %= nKeyGroups;
break;
case XkbClampIntoRange:
effectiveGroup = nKeyGroups-1;
break;
case XkbRedirectIntoRange:
effectiveGroup = XkbOutOfRangeGroupNumber(groupInfo);
if (effectiveGroup>=nKeyGroups)
effectiveGroup= 0;
break;
}
}
col= effectiveGroup*XkbKeyGroupsWidth(xkb,key);
type = XkbKeyKeyType(xkb,key,effectiveGroup);
preserve= 0;
if (type->map) { /* find the column (shift level) within the group */
register int i;
register XkbKTMapEntryPtr entry;
/* ---- Begin section modified for GDK ---- */
int found = 0;
for (i=0,entry=type->map;i<type->map_count;i++,entry++) {
if (mods_rtrn) {
int bits = 0;
unsigned long tmp = entry->mods.mask;
while (tmp) {
if ((tmp & 1) == 1)
bits++;
tmp >>= 1;
}
/* We always add one-modifiers levels to mods_rtrn since
* they can't wipe out bits in the state unless the
* level would be triggered. But return other modifiers
*
*/
if (bits == 1 || (mods&type->mods.mask)==entry->mods.mask)
*mods_rtrn |= entry->mods.mask;
}
if (!found&&entry->active&&((mods&type->mods.mask)==entry->mods.mask)) {
col+= entry->level;
if (type->preserve)
preserve= type->preserve[i].mask;
if (level_rtrn)
*level_rtrn = entry->level;
found = 1;
}
}
/* ---- End section modified for GDK ---- */
}
if (keysym_rtrn!=NULL)
*keysym_rtrn= syms[col];
if (mods_rtrn) {
/* ---- Begin section modified for GDK ---- */
*mods_rtrn &= ~preserve;
/* ---- End section modified for GDK ---- */
/* ---- Begin stuff GDK comments out of the original Xlib version ---- */
/* This is commented out because xkb_info is a private struct */
#if 0
/* The Motif VTS doesn't get the help callback called if help
* is bound to Shift+<whatever>, and it appears as though it
* is XkbTranslateKeyCode that is causing the problem. The
* core X version of XTranslateKey always OR's in ShiftMask
* and LockMask for mods_rtrn, so this "fix" keeps this behavior
* and solves the VTS problem.
*/
if ((xkb->dpy)&&(xkb->dpy->xkb_info)&&
(xkb->dpy->xkb_info->xlib_ctrls&XkbLC_AlwaysConsumeShiftAndLock)) { *mods_rtrn|= (ShiftMask|LockMask);
}
#endif
/* ---- End stuff GDK comments out of the original Xlib version ---- */
}
/* ---- Begin stuff GDK adds to the original Xlib version ---- */
if (group_rtrn)
*group_rtrn = effectiveGroup;
/* ---- End stuff GDK adds to the original Xlib version ---- */
return (syms[col] != NoSymbol);
}
#endif /* HAVE_XKB */
/* Translates from keycode/state to keysymbol using the traditional interpretation
* of the keyboard map. See section 12.7 of the Xlib reference manual
*/
static guint
translate_keysym (GdkKeymapX11 *keymap_x11,
guint hardware_keycode,
gint group,
GdkModifierType state,
gint *effective_group,
gint *effective_level)
{
const KeySym *map = get_keymap (keymap_x11);
const KeySym *syms = map + (hardware_keycode - keymap_x11->min_keycode) * keymap_x11->keysyms_per_keycode;
#define SYM(k,g,l) get_symbol (syms, k,g,l)
GdkModifierType shift_modifiers;
gint shift_level;
guint tmp_keyval;
gint num_lock_index;
shift_modifiers = GDK_SHIFT_MASK;
if (keymap_x11->lock_keysym == GDK_Shift_Lock)
shift_modifiers |= GDK_LOCK_MASK;
/* Fall back to the first group if the passed in group is empty
*/
if (!(SYM (keymap_x11, group, 0) || SYM (keymap_x11, group, 1)) &&
(SYM (keymap_x11, 0, 0) || SYM (keymap_x11, 0, 1)))
group = 0;
/* Hack: On Sun, the Num Lock modifier uses the third element in the
* keysym array, and Mode_Switch does not apply for a keypad key.
*/
if (keymap_x11->sun_keypad)
{
num_lock_index = 2;
if (group != 0)
{
gint i;
for (i = 0; i < keymap_x11->keysyms_per_keycode; i++)
if (KEYSYM_IS_KEYPAD (SYM (keymap_x11, 0, i)))
group = 0;
}
}
else
num_lock_index = 1;
if ((state & keymap_x11->num_lock_mask) &&
KEYSYM_IS_KEYPAD (SYM (keymap_x11, group, num_lock_index)))
{
/* Shift, Shift_Lock cancel Num_Lock
*/
shift_level = (state & shift_modifiers) ? 0 : num_lock_index;
if (!SYM (keymap_x11, group, shift_level) && SYM (keymap_x11, group, 0))
shift_level = 0;
tmp_keyval = SYM (keymap_x11, group, shift_level);
}
else
{
/* Fall back to the first level if no symbol for the level
* we were passed.
*/
shift_level = (state & shift_modifiers) ? 1 : 0;
if (!SYM (keymap_x11, group, shift_level) && SYM (keymap_x11, group, 0))
shift_level = 0;
tmp_keyval = SYM (keymap_x11, group, shift_level);
if (keymap_x11->lock_keysym == GDK_Caps_Lock && (state & GDK_LOCK_MASK) != 0)
{
guint upper = gdk_keyval_to_upper (tmp_keyval);
if (upper != tmp_keyval)
tmp_keyval = upper;
}
}
if (effective_group)
*effective_group = group;
if (effective_level)
*effective_level = shift_level;
return tmp_keyval;
#undef SYM
}
/**
* gdk_keymap_translate_keyboard_state:
* @keymap: (allow-none): a #GdkKeymap, or %NULL to use the default
* @hardware_keycode: a keycode
* @state: a modifier state
* @group: active keyboard group
* @keyval: (out) (allow-none): return location for keyval, or %NULL
* @effective_group: (out) (allow-none): return location for effective group, or %NULL
* @level: (out) (allow-none): return location for level, or %NULL
* @consumed_modifiers: (out) (allow-none): return location for modifiers that were used to
* determine the group or level, or %NULL
*
* Translates the contents of a #GdkEventKey into a keyval, effective
* group, and level. Modifiers that affected the translation and
* are thus unavailable for application use are returned in
* @consumed_modifiers. See gdk_keyval_get_keys() for an explanation of
* groups and levels. The @effective_group is the group that was
* actually used for the translation; some keys such as Enter are not
* affected by the active keyboard group. The @level is derived from
* @state. For convenience, #GdkEventKey already contains the translated
* keyval, so this function isn't as useful as you might think.
*
* <note><para>
* @consumed_modifiers gives modifiers that should be masked out
* from @state when comparing this key press to a hot key. For
* instance, on a US keyboard, the <literal>plus</literal>
* symbol is shifted, so when comparing a key press to a
* <literal>&lt;Control&gt;plus</literal> accelerator &lt;Shift&gt; should
* be masked out.
* </para>
* <informalexample><programlisting>
* &sol;* We want to ignore irrelevant modifiers like ScrollLock *&sol;
* &num;define ALL_ACCELS_MASK (GDK_CONTROL_MASK | GDK_SHIFT_MASK | GDK_MOD1_MASK)
* gdk_keymap_translate_keyboard_state (keymap, event->hardware_keycode,
* event->state, event->group,
* &amp;keyval, NULL, NULL, &amp;consumed);
* if (keyval == GDK_PLUS &&
* (event->state &amp; ~consumed &amp; ALL_ACCELS_MASK) == GDK_CONTROL_MASK)
* &sol;* Control was pressed *&sol;
* </programlisting></informalexample>
* <para>
* An older interpretation @consumed_modifiers was that it contained
* all modifiers that might affect the translation of the key;
* this allowed accelerators to be stored with irrelevant consumed
* modifiers, by doing:</para>
* <informalexample><programlisting>
* &sol;* XXX Don't do this XXX *&sol;
* if (keyval == accel_keyval &&
* (event->state &amp; ~consumed &amp; ALL_ACCELS_MASK) == (accel_mods &amp; ~consumed))
* &sol;* Accelerator was pressed *&sol;
* </programlisting></informalexample>
* <para>
* However, this did not work if multi-modifier combinations were
* used in the keymap, since, for instance, <literal>&lt;Control&gt;</literal>
* would be masked out even if only <literal>&lt;Control&gt;&lt;Alt&gt;</literal>
* was used in the keymap. To support this usage as well as well as
* possible, all <emphasis>single modifier</emphasis> combinations
* that could affect the key for any combination of modifiers will
* be returned in @consumed_modifiers; multi-modifier combinations
* are returned only when actually found in @state. When you store
* accelerators, you should always store them with consumed modifiers
* removed. Store <literal>&lt;Control&gt;plus</literal>,
* not <literal>&lt;Control&gt;&lt;Shift&gt;plus</literal>,
* </para></note>
*
* Return value: %TRUE if there was a keyval bound to the keycode/state/group
**/
gboolean
gdk_keymap_translate_keyboard_state (GdkKeymap *keymap,
guint hardware_keycode,
GdkModifierType state,
gint group,
guint *keyval,
gint *effective_group,
gint *level,
GdkModifierType *consumed_modifiers)
{
GdkKeymapX11 *keymap_x11;
KeySym tmp_keyval = NoSymbol;
guint tmp_modifiers;
g_return_val_if_fail (keymap == NULL || GDK_IS_KEYMAP (keymap), FALSE);
g_return_val_if_fail (group < 4, FALSE);
keymap = GET_EFFECTIVE_KEYMAP (keymap);
keymap_x11 = GDK_KEYMAP_X11 (keymap);
if (keyval)
*keyval = NoSymbol;
if (effective_group)
*effective_group = 0;
if (level)
*level = 0;
if (consumed_modifiers)
*consumed_modifiers = 0;
update_keyrange (keymap_x11);
if (hardware_keycode < keymap_x11->min_keycode ||
hardware_keycode > keymap_x11->max_keycode)
return FALSE;
#ifdef HAVE_XKB
if (KEYMAP_USE_XKB (keymap))
{
XkbDescRec *xkb = get_xkb (keymap_x11);
/* replace bits 13 and 14 with the provided group */
state &= ~(1 << 13 | 1 << 14);
state |= group << 13;
MyEnhancedXkbTranslateKeyCode (xkb,
hardware_keycode,
state,
&tmp_modifiers,
&tmp_keyval,
effective_group,
level);
if (state & ~tmp_modifiers & LockMask)
tmp_keyval = gdk_keyval_to_upper (tmp_keyval);
/* We need to augment the consumed modifiers with LockMask, since
* we handle that ourselves, and also with the group bits
*/
tmp_modifiers |= LockMask | 1 << 13 | 1 << 14;
}
else
#endif
{
GdkModifierType bit;
tmp_modifiers = 0;
/* We see what modifiers matter by trying the translation with
* and without each possible modifier
*/
for (bit = GDK_SHIFT_MASK; bit < GDK_BUTTON1_MASK; bit <<= 1)
{
/* Handling of the group here is a bit funky; a traditional
* X keyboard map can have more than two groups, but no way
* of accessing the extra groups is defined. We allow a
* caller to pass in any group to this function, but we
* only can represent switching between group 0 and 1 in
* consumed modifiers.
*/
if (translate_keysym (keymap_x11, hardware_keycode,
(bit == keymap_x11->group_switch_mask) ? 0 : group,
state & ~bit,
NULL, NULL) !=
translate_keysym (keymap_x11, hardware_keycode,
(bit == keymap_x11->group_switch_mask) ? 1 : group,
state | bit,
NULL, NULL))
tmp_modifiers |= bit;
}
tmp_keyval = translate_keysym (keymap_x11, hardware_keycode,
group, state,
level, effective_group);
}
if (consumed_modifiers)
*consumed_modifiers = tmp_modifiers;
if (keyval)
*keyval = tmp_keyval;
return tmp_keyval != NoSymbol;
}
/* Key handling not part of the keymap */
gchar*
gdk_keyval_name (guint keyval)
{
switch (keyval)
{
case GDK_Page_Up:
return "Page_Up";
case GDK_Page_Down:
return "Page_Down";
case GDK_KP_Page_Up:
return "KP_Page_Up";
case GDK_KP_Page_Down:
return "KP_Page_Down";
}
return XKeysymToString (keyval);
}
guint
gdk_keyval_from_name (const gchar *keyval_name)
{
g_return_val_if_fail (keyval_name != NULL, 0);
return XStringToKeysym (keyval_name);
}
#ifdef HAVE_XCONVERTCASE
void
gdk_keyval_convert_case (guint symbol,
guint *lower,
guint *upper)
{
KeySym xlower = 0;
KeySym xupper = 0;
/* 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;
}
if (symbol)
XConvertCase (symbol, &xlower, &xupper);
if (lower)
*lower = xlower;
if (upper)
*upper = xupper;
}
#endif /* HAVE_XCONVERTCASE */
gint
_gdk_x11_get_group_for_state (GdkDisplay *display,
GdkModifierType state)
{
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
#ifdef HAVE_XKB
if (display_x11->use_xkb)
{
return XkbGroupForCoreState (state);
}
else
#endif
{
GdkKeymapX11 *keymap_impl = GDK_KEYMAP_X11 (gdk_keymap_get_for_display (display));
update_keymaps (keymap_impl);
return (state & keymap_impl->group_switch_mask) ? 1 : 0;
}
}
void
_gdk_keymap_add_virtual_modifiers (GdkKeymap *keymap,
GdkModifierType *modifiers)
{
GdkKeymapX11 *keymap_x11;
int i;
keymap = GET_EFFECTIVE_KEYMAP (keymap);
keymap_x11 = GDK_KEYMAP_X11 (keymap);
for (i = 3; i < 8; i++)
{
if ((1 << i) & *modifiers)
{
if (keymap_x11->modmap[i] & GDK_MOD1_MASK)
*modifiers |= GDK_MOD1_MASK;
if (keymap_x11->modmap[i] & GDK_SUPER_MASK)
*modifiers |= GDK_SUPER_MASK;
if (keymap_x11->modmap[i] & GDK_HYPER_MASK)
*modifiers |= GDK_HYPER_MASK;
if (keymap_x11->modmap[i] & GDK_META_MASK)
*modifiers |= GDK_META_MASK;
}
}
}
gboolean
_gdk_keymap_key_is_modifier (GdkKeymap *keymap,
guint keycode)
{
GdkKeymapX11 *keymap_x11;
gint i;
keymap = GET_EFFECTIVE_KEYMAP (keymap);
keymap_x11 = GDK_KEYMAP_X11 (keymap);
if (keycode < keymap_x11->min_keycode ||
keycode > keymap_x11->max_keycode)
return FALSE;
#ifdef HAVE_XKB
if (KEYMAP_USE_XKB (keymap))
{
XkbDescRec *xkb = get_xkb (keymap_x11);
if (xkb->map->modmap && xkb->map->modmap[keycode] != 0)
return TRUE;
}
else
#endif
{
for (i = 0; i < 8 * keymap_x11->mod_keymap->max_keypermod; i++)
{
if (keycode == keymap_x11->mod_keymap->modifiermap[i])
return TRUE;
}
}
return FALSE;
}
/*
* gdk_keymap_map_virtual_modifiers:
* @keymap: a #GdkKeymap
* @state: pointer to the modifier state to map
*
* Maps the virtual modifiers (i.e. Super, Hyper and Meta) which
* are set in @state to their non-virtual counterparts (i.e. Mod2,
* Mod3,...) and set the corresponding bits in @state.
*
* This function is useful when matching key events against
* accelerators.
*
* Returns: %TRUE if no virtual modifiers were mapped to the
* same non-virtual modifier. Note that %FALSE is also returned
* if a virtual modifier is mapped to a non-virtual modifier that
* was already set in @state.
*
* Since: 2.20
*/
gboolean
gdk_keymap_map_virtual_modifiers (GdkKeymap *keymap,
GdkModifierType *state)
{
GdkKeymapX11 *keymap_x11;
const guint vmods[] = {
GDK_SUPER_MASK, GDK_HYPER_MASK, GDK_META_MASK
};
int i, j;
gboolean retval;
keymap = GET_EFFECTIVE_KEYMAP (keymap);
keymap_x11 = GDK_KEYMAP_X11 (keymap);
retval = TRUE;
for (j = 0; j < 3; j++)
{
if (*state & vmods[j])
{
for (i = 3; i < 8; i++)
{
if (keymap_x11->modmap[i] & vmods[j])
{
if (*state & (1 << i))
retval = FALSE;
else
*state |= 1 << i;
}
}
}
}
return retval;
}
#define __GDK_KEYS_X11_C__
#include "gdkaliasdef.c"
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