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gtk/gdk/win32/gdkkeys-win32.c
Jeremy Tan 2784b03b2d gdkkeys-win32.c: fix initialisation of key_state in update_keymap 
It apparently worked by chance in the past, but now causes e.g.
alphanumeric characters to be interpreted as half-width katakana
when using the Japanese IME.
2021-07-09 12:46:49 +08:00

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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, see <http://www.gnu.org/licenses/>.
*/
/*
* 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 <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <errno.h>
#include "gdk.h"
#include "gdkprivate-win32.h"
#include "gdkinternals.h"
#include "gdkkeysyms.h"
#include "gdkkeysprivate.h"
#include "gdkwin32keys.h"
#define GDK_MOD2_MASK (1 << 4)
enum _GdkWin32KeyLevelState
{
GDK_WIN32_LEVEL_NONE = 0,
GDK_WIN32_LEVEL_SHIFT,
GDK_WIN32_LEVEL_CAPSLOCK,
GDK_WIN32_LEVEL_SHIFT_CAPSLOCK,
GDK_WIN32_LEVEL_ALTGR,
GDK_WIN32_LEVEL_SHIFT_ALTGR,
GDK_WIN32_LEVEL_CAPSLOCK_ALTGR,
GDK_WIN32_LEVEL_SHIFT_CAPSLOCK_ALTGR,
GDK_WIN32_LEVEL_COUNT
};
typedef enum _GdkWin32KeyLevelState GdkWin32KeyLevelState;
struct _GdkWin32KeyNode
{
/* Non-spacing version of the dead key */
guint undead_gdk_keycode;
/* Virtual key code */
guint8 vk;
/* Level for which this virtual key code produces this gdk_keycode */
GdkWin32KeyLevelState level;
/* GDK (X11) code for this key */
guint gdk_keycode;
/* Array of GdkWin32KeyNode should be sorted by gdk_keycode, then by level */
GArray *combinations;
};
typedef struct _GdkWin32KeyNode GdkWin32KeyNode;
/*
Example:
GdkWin32KeyNode
{
undead_gdk_keycode = 0x0b4 GDK_KEY_acute (')
vk = 0xde VK_OEM_7
level = GDK_WIN32_LEVEL_NONE
gdk_keycode = 0xfe51 GDK_KEY_dead_acute
combinations =
{
GdkWin32KeyNode
{
undead_gdk_keycode = 0x061 GDK_KEY_a (a)
level = GDK_WIN32_LEVEL_NONE
vk = 0x41 VK_A
gdk_keycode = 0xe1 GDK_KEY_aacute á
combinations = NULL
},
GdkWin32KeyNode
{
unicode_char = 0x041 GDK_KEY_A (A)
level = GDK_WIN32_LEVEL_SHIFT
vk = 0x41 VK_A
gdk_keycode = 0x0c1 GDK_KEY_Aacute Á
combinations = NULL
},
{ ... }
}
}
Thus:
GDK_KEY_dead_acute + GDK_KEY_a
= GDK_KEY_aacute
GDK_KEY_dead_acute + GDK_KEY_A
= GDK_KEY_Aacute
GDK_KEY_dead_acute + GDK_KEY_s
matches partially
(GDK_KEY_dead_acute is a known dead key, but does not combine with GDK_KEY_s)
and resolves into:
GDK_KEY_acute + GDK_KEY_s
GDK_KEY_dead_somethingelse + GDK_KEY_anything
does not match at all
(W32 API did not provide any deadkey info for GDK_KEY_dead_somethingelse)
and the caller will try other matching mechanisms for compose_buffer
*/
struct _GdkWin32KeyGroupOptions
{
/* character that should be used as the decimal separator */
wchar_t decimal_mark;
/* Scancode for the VK_RSHIFT */
guint scancode_rshift;
/* TRUE if Ctrl+Alt emulates AltGr */
gboolean has_altgr;
GArray *dead_keys;
};
typedef struct _GdkWin32KeyGroupOptions GdkWin32KeyGroupOptions;
struct _GdkWin32KeymapClass
{
GdkKeymapClass parent_class;
};
struct _GdkWin32Keymap
{
GdkKeymap parent_instance;
/* length = what GetKeyboardLayoutList() returns, type = HKL.
* When it changes, recreate the keymap and repopulate the options.
*/
GArray *layout_handles;
/* VirtualKeyCode -> gdk_keyval table
* length = 256 * length(layout_handles) * 2 * 4
* 256 is the number of virtual key codes,
* 2x4 is the number of Shift/AltGr/CapsLock combinations (level),
* length(layout_handles) is the number of layout handles (group).
*/
guint *keysym_tab;
/* length = length(layout_handles), type = GdkWin32KeyGroupOptions
* Kept separate from layout_handles because layout_handles is
* populated by W32 API.
*/
GArray *options;
/* Index of a handle in layout_handles,
* at any point it should be the same handle as GetKeyboardLayout(0) returns,
* but GDK caches it to avoid calling GetKeyboardLayout (0) every time.
*/
guint8 active_layout;
};
G_DEFINE_TYPE (GdkWin32Keymap, gdk_win32_keymap, GDK_TYPE_KEYMAP)
guint _gdk_keymap_serial = 0;
static GdkKeymap *default_keymap = NULL;
#define KEY_STATE_SIZE 256
static void update_keymap (GdkKeymap *gdk_keymap);
static void
gdk_win32_key_group_options_clear (GdkWin32KeyGroupOptions *options)
{
g_clear_pointer (&options->dead_keys, g_array_unref);
}
static void
gdk_win32_key_node_clear (GdkWin32KeyNode *node)
{
g_clear_pointer (&node->combinations, g_array_unref);
}
static void
gdk_win32_keymap_init (GdkWin32Keymap *keymap)
{
keymap->layout_handles = g_array_new (FALSE, FALSE, sizeof (HKL));
keymap->options = g_array_new (FALSE, FALSE, sizeof (GdkWin32KeyGroupOptions));
g_array_set_clear_func (keymap->options, (GDestroyNotify) gdk_win32_key_group_options_clear);
keymap->keysym_tab = NULL;
keymap->active_layout = 0;
update_keymap (GDK_KEYMAP (keymap));
}
static void
gdk_win32_keymap_finalize (GObject *object)
{
GdkWin32Keymap *keymap = GDK_WIN32_KEYMAP (object);
g_clear_pointer (&keymap->keysym_tab, g_free);
g_clear_pointer (&keymap->layout_handles, g_array_unref);
g_clear_pointer (&keymap->options, g_array_unref);
G_OBJECT_CLASS (gdk_win32_keymap_parent_class)->finalize (object);
}
#ifdef G_ENABLE_DEBUG
static void
print_keysym_tab (GdkWin32Keymap *keymap)
{
int li;
GdkWin32KeyGroupOptions *options;
int vk;
GdkWin32KeyLevelState level;
int group_size = keymap->layout_handles->len;
for (li = 0; li < group_size; li++)
{
options = &g_array_index (keymap->options, GdkWin32KeyGroupOptions, li);
g_print ("keymap %d (0x%p):%s\n",
li, g_array_index (keymap->layout_handles, HKL, li),
options->has_altgr ? " (uses AltGr)" : "");
for (vk = 0; vk < KEY_STATE_SIZE; vk++)
{
g_print ("%#.02x: ", vk);
for (level = 0; level < GDK_WIN32_LEVEL_COUNT; level++)
{
const char *name = gdk_keyval_name (keymap->keysym_tab[vk * group_size * GDK_WIN32_LEVEL_COUNT + level]);
g_print ("%s ", name ? name : "(none)");
}
g_print ("\n");
}
}
}
#endif
static void
handle_special (guint vk,
guint *ksymp,
int shift)
{
switch (vk)
{
case VK_CANCEL:
*ksymp = GDK_KEY_Cancel; break;
case VK_BACK:
*ksymp = GDK_KEY_BackSpace; break;
case VK_TAB:
if (shift & 0x1)
*ksymp = GDK_KEY_ISO_Left_Tab;
else
*ksymp = GDK_KEY_Tab;
break;
case VK_CLEAR:
*ksymp = GDK_KEY_Clear; break;
case VK_RETURN:
*ksymp = GDK_KEY_Return; break;
case VK_SHIFT:
case VK_LSHIFT:
*ksymp = GDK_KEY_Shift_L; break;
case VK_CONTROL:
case VK_LCONTROL:
*ksymp = GDK_KEY_Control_L; break;
case VK_MENU:
case VK_LMENU:
*ksymp = GDK_KEY_Alt_L; break;
case VK_PAUSE:
*ksymp = GDK_KEY_Pause; break;
case VK_ESCAPE:
*ksymp = GDK_KEY_Escape; break;
case VK_PRIOR:
*ksymp = GDK_KEY_Prior; break;
case VK_NEXT:
*ksymp = GDK_KEY_Next; break;
case VK_END:
*ksymp = GDK_KEY_End; break;
case VK_HOME:
*ksymp = GDK_KEY_Home; break;
case VK_LEFT:
*ksymp = GDK_KEY_Left; break;
case VK_UP:
*ksymp = GDK_KEY_Up; break;
case VK_RIGHT:
*ksymp = GDK_KEY_Right; break;
case VK_DOWN:
*ksymp = GDK_KEY_Down; break;
case VK_SELECT:
*ksymp = GDK_KEY_Select; break;
case VK_PRINT:
*ksymp = GDK_KEY_Print; break;
case VK_SNAPSHOT:
*ksymp = GDK_KEY_Print; break;
case VK_EXECUTE:
*ksymp = GDK_KEY_Execute; break;
case VK_INSERT:
*ksymp = GDK_KEY_Insert; break;
case VK_DELETE:
*ksymp = GDK_KEY_Delete; break;
case VK_HELP:
*ksymp = GDK_KEY_Help; break;
case VK_LWIN:
*ksymp = GDK_KEY_Meta_L; break;
case VK_RWIN:
*ksymp = GDK_KEY_Meta_R; break;
case VK_APPS:
*ksymp = GDK_KEY_Menu; break;
case VK_DECIMAL:
*ksymp = GDK_KEY_KP_Decimal; break;
case VK_MULTIPLY:
*ksymp = GDK_KEY_KP_Multiply; break;
case VK_ADD:
*ksymp = GDK_KEY_KP_Add; break;
case VK_SEPARATOR:
*ksymp = GDK_KEY_KP_Separator; break;
case VK_SUBTRACT:
*ksymp = GDK_KEY_KP_Subtract; break;
case VK_DIVIDE:
*ksymp = GDK_KEY_KP_Divide; break;
case VK_NUMPAD0:
*ksymp = GDK_KEY_KP_0; break;
case VK_NUMPAD1:
*ksymp = GDK_KEY_KP_1; break;
case VK_NUMPAD2:
*ksymp = GDK_KEY_KP_2; break;
case VK_NUMPAD3:
*ksymp = GDK_KEY_KP_3; break;
case VK_NUMPAD4:
*ksymp = GDK_KEY_KP_4; break;
case VK_NUMPAD5:
*ksymp = GDK_KEY_KP_5; break;
case VK_NUMPAD6:
*ksymp = GDK_KEY_KP_6; break;
case VK_NUMPAD7:
*ksymp = GDK_KEY_KP_7; break;
case VK_NUMPAD8:
*ksymp = GDK_KEY_KP_8; break;
case VK_NUMPAD9:
*ksymp = GDK_KEY_KP_9; break;
case VK_F1:
*ksymp = GDK_KEY_F1; break;
case VK_F2:
*ksymp = GDK_KEY_F2; break;
case VK_F3:
*ksymp = GDK_KEY_F3; break;
case VK_F4:
*ksymp = GDK_KEY_F4; break;
case VK_F5:
*ksymp = GDK_KEY_F5; break;
case VK_F6:
*ksymp = GDK_KEY_F6; break;
case VK_F7:
*ksymp = GDK_KEY_F7; break;
case VK_F8:
*ksymp = GDK_KEY_F8; break;
case VK_F9:
*ksymp = GDK_KEY_F9; break;
case VK_F10:
*ksymp = GDK_KEY_F10; break;
case VK_F11:
*ksymp = GDK_KEY_F11; break;
case VK_F12:
*ksymp = GDK_KEY_F12; break;
case VK_F13:
*ksymp = GDK_KEY_F13; break;
case VK_F14:
*ksymp = GDK_KEY_F14; break;
case VK_F15:
*ksymp = GDK_KEY_F15; break;
case VK_F16:
*ksymp = GDK_KEY_F16; break;
case VK_F17:
*ksymp = GDK_KEY_F17; break;
case VK_F18:
*ksymp = GDK_KEY_F18; break;
case VK_F19:
*ksymp = GDK_KEY_F19; break;
case VK_F20:
*ksymp = GDK_KEY_F20; break;
case VK_F21:
*ksymp = GDK_KEY_F21; break;
case VK_F22:
*ksymp = GDK_KEY_F22; break;
case VK_F23:
*ksymp = GDK_KEY_F23; break;
case VK_F24:
*ksymp = GDK_KEY_F24; break;
case VK_NUMLOCK:
*ksymp = GDK_KEY_Num_Lock; break;
case VK_SCROLL:
*ksymp = GDK_KEY_Scroll_Lock; break;
case VK_RSHIFT:
*ksymp = GDK_KEY_Shift_R; break;
case VK_RCONTROL:
*ksymp = GDK_KEY_Control_R; break;
case VK_RMENU:
*ksymp = GDK_KEY_Alt_R; break;
}
}
static void
set_level_vks (guchar *key_state,
GdkWin32KeyLevelState level)
{
switch (level)
{
case GDK_WIN32_LEVEL_NONE:
key_state[VK_SHIFT] = 0;
key_state[VK_CAPITAL] = 0;
key_state[VK_CONTROL] = key_state[VK_MENU] = 0;
break;
case GDK_WIN32_LEVEL_SHIFT:
key_state[VK_SHIFT] = 0x80;
key_state[VK_CAPITAL] = 0;
key_state[VK_CONTROL] = key_state[VK_MENU] = 0;
break;
case GDK_WIN32_LEVEL_CAPSLOCK:
key_state[VK_SHIFT] = 0;
key_state[VK_CAPITAL] = 0x01;
key_state[VK_CONTROL] = key_state[VK_MENU] = 0;
break;
case GDK_WIN32_LEVEL_SHIFT_CAPSLOCK:
key_state[VK_SHIFT] = 0x80;
key_state[VK_CAPITAL] = 0x01;
key_state[VK_CONTROL] = key_state[VK_MENU] = 0;
break;
case GDK_WIN32_LEVEL_ALTGR:
key_state[VK_SHIFT] = 0;
key_state[VK_CAPITAL] = 0;
key_state[VK_CONTROL] = key_state[VK_MENU] = 0x80;
break;
case GDK_WIN32_LEVEL_SHIFT_ALTGR:
key_state[VK_SHIFT] = 0x80;
key_state[VK_CAPITAL] = 0;
key_state[VK_CONTROL] = key_state[VK_MENU] = 0x80;
break;
case GDK_WIN32_LEVEL_CAPSLOCK_ALTGR:
key_state[VK_SHIFT] = 0;
key_state[VK_CAPITAL] = 0x01;
key_state[VK_CONTROL] = key_state[VK_MENU] = 0x80;
break;
case GDK_WIN32_LEVEL_SHIFT_CAPSLOCK_ALTGR:
key_state[VK_SHIFT] = 0x80;
key_state[VK_CAPITAL] = 0x01;
key_state[VK_CONTROL] = key_state[VK_MENU] = 0x80;
break;
case GDK_WIN32_LEVEL_COUNT:
g_assert_not_reached ();
break;
}
}
static void
reset_after_dead (guchar key_state[KEY_STATE_SIZE],
HKL handle)
{
guchar temp_key_state[KEY_STATE_SIZE];
wchar_t wcs[2];
memmove (temp_key_state, key_state, KEY_STATE_SIZE);
temp_key_state[VK_SHIFT] =
temp_key_state[VK_CONTROL] =
temp_key_state[VK_CAPITAL] =
temp_key_state[VK_MENU] = 0;
ToUnicodeEx (VK_SPACE, MapVirtualKey (VK_SPACE, 0),
temp_key_state, wcs, G_N_ELEMENTS (wcs),
0, handle);
}
static void
handle_dead (guint keysym,
guint *ksymp)
{
switch (keysym)
{
case '"': /* 0x022 */
*ksymp = GDK_KEY_dead_diaeresis; break;
case '\'': /* 0x027 */
*ksymp = GDK_KEY_dead_acute; break;
case GDK_KEY_asciicircum: /* 0x05e */
*ksymp = GDK_KEY_dead_circumflex; break;
case GDK_KEY_grave: /* 0x060 */
*ksymp = GDK_KEY_dead_grave; break;
case GDK_KEY_asciitilde: /* 0x07e */
*ksymp = GDK_KEY_dead_tilde; break;
case GDK_KEY_diaeresis: /* 0x0a8 */
*ksymp = GDK_KEY_dead_diaeresis; break;
case GDK_KEY_degree: /* 0x0b0 */
*ksymp = GDK_KEY_dead_abovering; break;
case GDK_KEY_acute: /* 0x0b4 */
*ksymp = GDK_KEY_dead_acute; break;
case GDK_KEY_periodcentered: /* 0x0b7 */
*ksymp = GDK_KEY_dead_abovedot; break;
case GDK_KEY_cedilla: /* 0x0b8 */
*ksymp = GDK_KEY_dead_cedilla; break;
case GDK_KEY_breve: /* 0x1a2 */
*ksymp = GDK_KEY_dead_breve; break;
case GDK_KEY_ogonek: /* 0x1b2 */
*ksymp = GDK_KEY_dead_ogonek; break;
case GDK_KEY_caron: /* 0x1b7 */
*ksymp = GDK_KEY_dead_caron; break;
case GDK_KEY_doubleacute: /* 0x1bd */
*ksymp = GDK_KEY_dead_doubleacute; break;
case GDK_KEY_abovedot: /* 0x1ff */
*ksymp = GDK_KEY_dead_abovedot; break;
case 0x1000384: /* Greek tonos */
*ksymp = GDK_KEY_dead_acute; break;
case GDK_KEY_Greek_accentdieresis: /* 0x7ae */
*ksymp = GDK_KEY_Greek_accentdieresis; break;
default:
/* By default use the keysym as such. This takes care of for
* instance the dead U+09CD (BENGALI VIRAMA) on the ekushey
* Bengali layout.
*/
*ksymp = keysym; break;
}
}
/* keypad decimal mark depends on active keyboard layout
* return current decimal mark as unicode character
*/
guint32
_gdk_win32_keymap_get_decimal_mark (GdkWin32Keymap *keymap)
{
if (keymap != NULL &&
keymap->layout_handles->len > 0 &&
g_array_index (keymap->options, GdkWin32KeyGroupOptions, keymap->active_layout).decimal_mark)
return g_array_index (keymap->options, GdkWin32KeyGroupOptions, keymap->active_layout).decimal_mark;
return (guint32) '.';
}
static gboolean
layouts_are_the_same (GArray *array, HKL *hkls, int hkls_len)
{
int i;
if (hkls_len != array->len)
return FALSE;
for (i = 0; i < hkls_len; i++)
if (hkls[i] != g_array_index (array, HKL, i))
return FALSE;
return TRUE;
}
static void
check_that_active_layout_is_in_sync (GdkWin32Keymap *keymap)
{
HKL hkl;
HKL cached_hkl;
wchar_t hkl_name[KL_NAMELENGTH];
if (keymap->layout_handles->len <= 0)
return;
hkl = GetKeyboardLayout (0);
cached_hkl = g_array_index (keymap->layout_handles, HKL, keymap->active_layout);
if (hkl != cached_hkl)
{
if (!GetKeyboardLayoutNameW (hkl_name))
wcscpy_s (hkl_name, KL_NAMELENGTH, L"(NULL)");
g_warning ("Cached active layout #%d (0x%p) does not match actual layout %S, 0x%p",
keymap->active_layout, cached_hkl, hkl_name, hkl);
}
}
static int
sort_key_nodes_by_gdk_keyval (gconstpointer a,
gconstpointer b)
{
const GdkWin32KeyNode *one = a;
const GdkWin32KeyNode *two = b;
if (one->gdk_keycode < two->gdk_keycode)
return -1;
else if (one->gdk_keycode > two->gdk_keycode)
return 1;
if (one->level < two->level)
return -1;
else if (one->level > two->level)
return 1;
return 0;
}
static void
update_keymap (GdkKeymap *gdk_keymap)
{
int hkls_len;
static int hkls_size = 0;
static HKL *hkls = NULL;
gboolean no_list;
static guint current_serial = 0;
int i, group;
GdkWin32KeyLevelState level;
GdkWin32KeyGroupOptions *options;
GdkWin32Keymap *keymap = GDK_WIN32_KEYMAP (gdk_keymap);
int keysym_tab_size;
guchar key_state[KEY_STATE_SIZE];
guint scancode;
guint vk;
guint *keygroup;
if (keymap->keysym_tab != NULL &&
current_serial == _gdk_keymap_serial)
return;
no_list = FALSE;
hkls_len = GetKeyboardLayoutList (0, NULL);
if (hkls_len <= 0)
{
hkls_len = 1;
no_list = TRUE;
}
else if (hkls_len > 255)
{
hkls_len = 255;
}
if (hkls_size < hkls_len)
{
hkls = g_renew (HKL, hkls, hkls_len);
hkls_size = hkls_len;
}
if (hkls_len != GetKeyboardLayoutList (hkls_len, hkls))
{
if (!no_list)
return;
hkls[0] = GetKeyboardLayout (0);
hkls_len = 1;
}
if (layouts_are_the_same (keymap->layout_handles, hkls, hkls_len))
{
check_that_active_layout_is_in_sync (keymap);
current_serial = _gdk_keymap_serial;
return;
}
GDK_NOTE (EVENTS, g_print ("\nHave %d keyboard layouts:", hkls_len));
for (i = 0; i < hkls_len; i++)
{
GDK_NOTE (EVENTS, g_print (" 0x%p", hkls[i]));
if (GetKeyboardLayout (0) == hkls[i])
{
wchar_t hkl_name[KL_NAMELENGTH];
if (!GetKeyboardLayoutNameW (hkl_name))
wcscpy_s (hkl_name, KL_NAMELENGTH, L"(NULL)");
GDK_NOTE (EVENTS, g_print ("(active, %S)", hkl_name));
}
}
GDK_NOTE (EVENTS, g_print ("\n"));
keysym_tab_size = hkls_len * 256 * 2 * 4;
if (hkls_len != keymap->layout_handles->len)
keymap->keysym_tab = g_renew (guint, keymap->keysym_tab, keysym_tab_size);
memset (key_state, 0, sizeof(key_state));
memset (keymap->keysym_tab, 0, keysym_tab_size);
g_array_set_size (keymap->layout_handles, hkls_len);
g_array_set_size (keymap->options, hkls_len);
for (i = 0; i < hkls_len; i++)
{
options = &g_array_index (keymap->options, GdkWin32KeyGroupOptions, i);
options->decimal_mark = 0;
options->scancode_rshift = 0;
options->has_altgr = FALSE;
options->dead_keys = g_array_new (FALSE, FALSE, sizeof (GdkWin32KeyNode));
g_array_set_clear_func (options->dead_keys, (GDestroyNotify) gdk_win32_key_node_clear);
g_array_index (keymap->layout_handles, HKL, i) = hkls[i];
if (hkls[i] == _gdk_input_locale)
keymap->active_layout = i;
}
for (vk = 0; vk < KEY_STATE_SIZE; vk++)
{
for (group = 0; group < hkls_len; group++)
{
options = &g_array_index (keymap->options, GdkWin32KeyGroupOptions, group);
scancode = MapVirtualKeyEx (vk, 0, hkls[group]);
keygroup = &keymap->keysym_tab[(vk * hkls_len + group) * GDK_WIN32_LEVEL_COUNT];
/* MapVirtualKeyEx() fails to produce a scancode for VK_DIVIDE and VK_PAUSE.
* Ignore that, handle_special() will figure out a Gdk keyval for these
* without needing a scancode.
*/
if (scancode == 0 &&
vk != VK_DIVIDE &&
vk != VK_PAUSE)
{
for (level = GDK_WIN32_LEVEL_NONE; level < GDK_WIN32_LEVEL_COUNT; level++)
keygroup[level] = GDK_KEY_VoidSymbol;
continue;
}
if (vk == VK_RSHIFT)
options->scancode_rshift = scancode;
key_state[vk] = 0x80;
for (level = GDK_WIN32_LEVEL_NONE; level < GDK_WIN32_LEVEL_COUNT; level++)
{
guint *ksymp = &keygroup[level];
set_level_vks (key_state, level);
*ksymp = 0;
/* First, handle those virtual keys that we always want
* as special GDK_* keysyms, even if ToAsciiEx might
* turn some them into an ASCII character (like TAB and
* ESC).
*/
handle_special (vk, ksymp, level);
if ((*ksymp == 0) ||
((vk == VK_DECIMAL) && (level == GDK_WIN32_LEVEL_NONE)))
{
wchar_t wcs[10];
int k;
guint keysym;
GdkWin32KeyNode dead_key;
wcs[0] = wcs[1] = 0;
k = ToUnicodeEx (vk, scancode, key_state,
wcs, G_N_ELEMENTS (wcs),
0, hkls[group]);
#if 0
g_print ("ToUnicodeEx(%#02x, %d: %d): %d, %04x %04x\n",
vk, scancode, level, k,
wcs[0], wcs[1]);
#endif
switch (k)
{
case 1:
if ((vk == VK_DECIMAL) && (level == GDK_WIN32_LEVEL_NONE))
options->decimal_mark = wcs[0];
else
*ksymp = gdk_unicode_to_keyval (wcs[0]);
break;
case -1:
keysym = gdk_unicode_to_keyval (wcs[0]);
/* It is a dead key, and it has been stored in
* the keyboard layout's state by
* ToAsciiEx()/ToUnicodeEx(). Yes, this is an
* incredibly silly API! Make the keyboard
* layout forget it by calling
* ToAsciiEx()/ToUnicodeEx() once more, with the
* virtual key code and scancode for the
* spacebar, without shift or AltGr. Otherwise
* the next call to ToAsciiEx() with a different
* key would try to combine with the dead key.
*/
reset_after_dead (key_state, hkls[group]);
/* Use dead keysyms instead of "undead" ones */
handle_dead (keysym, ksymp);
dead_key.undead_gdk_keycode = keysym;
dead_key.vk = vk;
dead_key.level = level;
dead_key.gdk_keycode = *ksymp;
dead_key.combinations = NULL;
g_array_append_val (options->dead_keys, dead_key);
break;
case 0:
/* Seems to be necessary to "reset" the keyboard layout
* in this case, too. Otherwise problems on NT4.
*/
reset_after_dead (key_state, hkls[group]);
break;
default:
#if 0
GDK_NOTE (EVENTS,
g_print ("ToUnicodeEx returns %d "
"for vk:%02x, sc:%02x%s%s\n",
k, vk, scancode,
(shift&0x1 ? " shift" : ""),
(shift&0x2 ? " altgr" : "")));
#endif
break;
}
}
if (*ksymp == 0)
*ksymp = GDK_KEY_VoidSymbol;
}
key_state[vk] = 0;
/* Check if keyboard has an AltGr key by checking if
* the mapping with Control+Alt is different.
* Don't test CapsLock here, as it does not seem to affect
* dead keys themselves, only the results of dead key combinations.
*/
if (!options->has_altgr)
if ((keygroup[GDK_WIN32_LEVEL_ALTGR] != GDK_KEY_VoidSymbol &&
keygroup[GDK_WIN32_LEVEL_NONE] != keygroup[GDK_WIN32_LEVEL_ALTGR]) ||
(keygroup[GDK_WIN32_LEVEL_SHIFT_ALTGR] != GDK_KEY_VoidSymbol &&
keygroup[GDK_WIN32_LEVEL_SHIFT] != keygroup[GDK_WIN32_LEVEL_SHIFT_ALTGR]))
options->has_altgr = TRUE;
}
}
scancode = 0x0;
for (group = 0; group < hkls_len; group++)
{
options = &g_array_index (keymap->options, GdkWin32KeyGroupOptions, group);
for (i = 0; i < options->dead_keys->len; i++)
{
wchar_t wcs[10];
int k;
GdkWin32KeyNode *dead_key;
GdkWin32KeyNode combo;
dead_key = &g_array_index (options->dead_keys, GdkWin32KeyNode, i);
for (vk = 0; vk < KEY_STATE_SIZE; vk++)
{
for (level = GDK_WIN32_LEVEL_NONE; level < GDK_WIN32_LEVEL_COUNT; level++)
{
/* Prime the ToUnicodeEx() internal state */
wcs[0] = wcs[1] = 0;
set_level_vks (key_state, dead_key->level);
k = ToUnicodeEx (dead_key->vk, scancode, key_state,
wcs, G_N_ELEMENTS (wcs),
0, hkls[group]);
switch (k)
{
case -1:
/* Okay */
break;
default:
/* Expected a dead key, got something else */
reset_after_dead (key_state, hkls[group]);
continue;
}
/* Check how it combines with vk */
wcs[0] = wcs[1] = 0;
set_level_vks (key_state, level);
k = ToUnicodeEx (vk, scancode, key_state,
wcs, G_N_ELEMENTS (wcs),
0, hkls[group]);
if (k == 0)
{
reset_after_dead (key_state, hkls[group]);
}
else if (k == -1)
{
/* Dead key chaining? TODO: support this (deeper tree?) */
reset_after_dead (key_state, hkls[group]);
}
else if (k == 1)
{
combo.vk = vk;
combo.level = level;
combo.gdk_keycode = gdk_unicode_to_keyval (wcs[0]);
combo.undead_gdk_keycode = combo.gdk_keycode;
combo.combinations = NULL;
if (dead_key->combinations == NULL)
{
dead_key->combinations = g_array_new (FALSE, FALSE, sizeof (GdkWin32KeyNode));
g_array_set_clear_func (dead_key->combinations, (GDestroyNotify) gdk_win32_key_node_clear);
}
#if 0
{
char *dead_key_undead_u8, *wcs_u8;
wchar_t t = gdk_keyval_to_unicode (dead_key->undead_gdk_keycode);
dead_key_undead_u8 = g_utf16_to_utf8 (&t, 1, NULL, NULL, NULL);
wcs_u8 = g_utf16_to_utf8 (wcs, 1, NULL, NULL, NULL);
g_fprintf (stdout, "%d %s%s%s0x%02x (%s) + %s%s%s0x%02x = 0x%04x (%s)\n", group,
(dead_key->level == GDK_WIN32_LEVEL_SHIFT ||
dead_key->level == GDK_WIN32_LEVEL_SHIFT_ALTGR ||
dead_key->level == GDK_WIN32_LEVEL_SHIFT_CAPSLOCK ||
dead_key->level == GDK_WIN32_LEVEL_SHIFT_CAPSLOCK_ALTGR) ? "SHIFT-" : " ",
(dead_key->level == GDK_WIN32_LEVEL_CAPSLOCK ||
dead_key->level == GDK_WIN32_LEVEL_SHIFT_CAPSLOCK ||
dead_key->level == GDK_WIN32_LEVEL_CAPSLOCK_ALTGR ||
dead_key->level == GDK_WIN32_LEVEL_SHIFT_CAPSLOCK_ALTGR) ? "CAPSLOCK-" : " ",
(dead_key->level == GDK_WIN32_LEVEL_ALTGR ||
dead_key->level == GDK_WIN32_LEVEL_SHIFT_ALTGR ||
dead_key->level == GDK_WIN32_LEVEL_CAPSLOCK_ALTGR ||
dead_key->level == GDK_WIN32_LEVEL_SHIFT_CAPSLOCK_ALTGR) ? "ALTGR-" : " ",
dead_key->vk,
dead_key_undead_u8,
(combo.level == GDK_WIN32_LEVEL_SHIFT ||
combo.level == GDK_WIN32_LEVEL_SHIFT_ALTGR ||
combo.level == GDK_WIN32_LEVEL_SHIFT_CAPSLOCK ||
combo.level == GDK_WIN32_LEVEL_SHIFT_CAPSLOCK_ALTGR) ? "SHIFT-" : " ",
(combo.level == GDK_WIN32_LEVEL_CAPSLOCK ||
combo.level == GDK_WIN32_LEVEL_SHIFT_CAPSLOCK ||
combo.level == GDK_WIN32_LEVEL_CAPSLOCK_ALTGR ||
combo.level == GDK_WIN32_LEVEL_SHIFT_CAPSLOCK_ALTGR) ? "CAPSLOCK-" : " ",
(combo.level == GDK_WIN32_LEVEL_ALTGR ||
combo.level == GDK_WIN32_LEVEL_SHIFT_ALTGR ||
combo.level == GDK_WIN32_LEVEL_CAPSLOCK_ALTGR ||
combo.level == GDK_WIN32_LEVEL_SHIFT_CAPSLOCK_ALTGR) ? "ALTGR-" : " ",
vk,
wcs[0],
wcs_u8);
g_free (dead_key_undead_u8);
g_free (wcs_u8);
}
#endif
g_array_append_val (dead_key->combinations, combo);
}
}
}
}
g_array_sort (options->dead_keys, (GCompareFunc) sort_key_nodes_by_gdk_keyval);
}
GDK_NOTE (EVENTS, print_keysym_tab (keymap));
check_that_active_layout_is_in_sync (keymap);
current_serial = _gdk_keymap_serial;
}
static gboolean
find_deadkey_by_keyval (GArray *dead_keys, guint16 keyval, gsize *index)
{
gsize deadkey_i;
gsize deadkey_i_max;
if (dead_keys->len == 0)
return FALSE;
deadkey_i = 0;
deadkey_i_max = dead_keys->len - 1;
while (deadkey_i != deadkey_i_max)
{
GdkWin32KeyNode *dead_key;
gsize middle;
if (g_array_index (dead_keys, GdkWin32KeyNode, deadkey_i).gdk_keycode == keyval)
{
break;
}
else if (g_array_index (dead_keys, GdkWin32KeyNode, deadkey_i_max).gdk_keycode == keyval)
{
deadkey_i = deadkey_i_max;
break;
}
else if (deadkey_i + 1 == deadkey_i_max)
{
break;
}
middle = deadkey_i + (deadkey_i_max - deadkey_i) / 2;
dead_key = &g_array_index (dead_keys, GdkWin32KeyNode, middle);
if (dead_key->gdk_keycode < keyval)
deadkey_i = middle;
else if (dead_key->gdk_keycode > keyval)
deadkey_i_max = middle;
else
deadkey_i = deadkey_i_max = middle;
}
if (g_array_index (dead_keys, GdkWin32KeyNode, deadkey_i).gdk_keycode == keyval)
{
*index = deadkey_i;
return TRUE;
}
return FALSE;
}
GdkWin32KeymapMatch
gdk_win32_keymap_check_compose (GdkWin32Keymap *keymap,
guint16 *compose_buffer,
gsize compose_buffer_len,
guint16 *output,
gsize *output_len)
{
int partial_match;
guint8 active_group;
gsize deadkey_i, node_i;
GdkWin32KeyNode *dead_key;
GdkWin32KeyGroupOptions *options;
GdkWin32KeymapMatch match;
gsize output_size;
g_return_val_if_fail (output != NULL && output_len != NULL, GDK_WIN32_KEYMAP_MATCH_NONE);
if (compose_buffer_len < 1)
return GDK_WIN32_KEYMAP_MATCH_NONE;
output_size = *output_len;
active_group = _gdk_win32_keymap_get_active_group (keymap);
options = &g_array_index (keymap->options, GdkWin32KeyGroupOptions, active_group);
partial_match = -1;
match = GDK_WIN32_KEYMAP_MATCH_NONE;
if (find_deadkey_by_keyval (options->dead_keys, compose_buffer[0], &deadkey_i))
{
while (deadkey_i > 0 &&
g_array_index (options->dead_keys, GdkWin32KeyNode, deadkey_i - 1).gdk_keycode == compose_buffer[0])
deadkey_i--;
/* Hardcoded 2-tier tree here (dead key + non dead key = character).
* TODO: support trees with arbitrary depth for dead key chaining.
*/
dead_key = &g_array_index (options->dead_keys, GdkWin32KeyNode, deadkey_i);
/* "Partial match" means "matched the whole sequence except the last key"
* (right now the sequence only has 2 keys, so this turns into "matched
* at least the first key").
* "last key" should be identified by having NULL further combinations.
* As a heuristic, convert the buffer contents into keyvals and use
* them as-is (normally there should be a separate unichar buffer for
* each combination, but we do not store these).
*/
partial_match = deadkey_i;
if (compose_buffer_len < 2)
match = GDK_WIN32_KEYMAP_MATCH_INCOMPLETE;
for (node_i = 0;
match != GDK_WIN32_KEYMAP_MATCH_INCOMPLETE &&
node_i < dead_key->combinations->len;
node_i++)
{
GdkWin32KeyNode *node;
node = &g_array_index (dead_key->combinations, GdkWin32KeyNode, node_i);
if (keymap->keysym_tab[(node->vk * keymap->layout_handles->len + active_group) * GDK_WIN32_LEVEL_COUNT + node->level] == compose_buffer[1])
{
match = GDK_WIN32_KEYMAP_MATCH_EXACT;
*output_len = 0;
if (*output_len < output_size && node->gdk_keycode != 0)
output[(*output_len)++] = node->gdk_keycode;
break;
}
}
}
if (match == GDK_WIN32_KEYMAP_MATCH_EXACT ||
match == GDK_WIN32_KEYMAP_MATCH_INCOMPLETE)
{
return match;
}
if (partial_match >= 0)
{
if (compose_buffer_len == 2)
{
dead_key = &g_array_index (options->dead_keys, GdkWin32KeyNode, partial_match);
*output_len = 0;
if (output_size >= 1)
output[(*output_len)++] = dead_key->undead_gdk_keycode;
if (output_size >= 2)
{
gsize second_deadkey_i;
/* Special case for "deadkey + deadkey = space-version-of-deadkey, space-version-of-deadkey" combinations.
* Normally the result is a sequence of 2 unichars, but we do not store this.
* For "deadkey + nondeadkey = space-version-of-deadkey, nondeadkey", we can use compose_buffer
* contents as-is, but space version of a dead key need to be looked up separately.
*/
if (find_deadkey_by_keyval (options->dead_keys, compose_buffer[1], &second_deadkey_i))
output[(*output_len)++] = g_array_index (options->dead_keys, GdkWin32KeyNode, second_deadkey_i).undead_gdk_keycode;
else
output[(*output_len)++] = compose_buffer[1];
}
}
return GDK_WIN32_KEYMAP_MATCH_PARTIAL;
}
return GDK_WIN32_KEYMAP_MATCH_NONE;
}
guint8
_gdk_win32_keymap_get_rshift_scancode (GdkWin32Keymap *keymap)
{
if (keymap != NULL &&
keymap->layout_handles->len > 0)
return g_array_index (keymap->options, GdkWin32KeyGroupOptions, keymap->active_layout).scancode_rshift;
return 0;
}
void
_gdk_win32_keymap_set_active_layout (GdkWin32Keymap *keymap,
HKL hkl)
{
if (keymap != NULL &&
keymap->layout_handles->len > 0)
{
int group;
for (group = 0; group < keymap->layout_handles->len; group++)
if (g_array_index (keymap->layout_handles, HKL, group) == hkl)
keymap->active_layout = group;
}
}
gboolean
_gdk_win32_keymap_has_altgr (GdkWin32Keymap *keymap)
{
if (keymap != NULL &&
keymap->layout_handles->len > 0)
return g_array_index (keymap->options, GdkWin32KeyGroupOptions, keymap->active_layout).has_altgr;
return FALSE;
}
guint8
_gdk_win32_keymap_get_active_group (GdkWin32Keymap *keymap)
{
if (keymap != NULL &&
keymap->layout_handles->len > 0)
return keymap->active_layout;
return 0;
}
GdkKeymap*
_gdk_win32_display_get_keymap (GdkDisplay *display)
{
g_return_val_if_fail (display == gdk_display_get_default (), NULL);
if (default_keymap == NULL)
default_keymap = g_object_new (gdk_win32_keymap_get_type (), NULL);
return default_keymap;
}
static PangoDirection
get_hkl_direction (HKL hkl)
{
switch (PRIMARYLANGID (LOWORD ((DWORD) (gintptr) hkl)))
{
case LANG_HEBREW:
case LANG_ARABIC:
#ifdef LANG_URDU
case LANG_URDU:
#endif
case LANG_FARSI:
/* Others? */
return PANGO_DIRECTION_RTL;
default:
return PANGO_DIRECTION_LTR;
}
}
static PangoDirection
gdk_win32_keymap_get_direction (GdkKeymap *gdk_keymap)
{
HKL active_hkl;
GdkWin32Keymap *keymap;
GdkKeymap *default_keymap = gdk_display_get_keymap (gdk_display_get_default ());
if (gdk_keymap == NULL || gdk_keymap != default_keymap)
keymap = GDK_WIN32_KEYMAP (default_keymap);
else
keymap = GDK_WIN32_KEYMAP (gdk_keymap);
update_keymap (GDK_KEYMAP (keymap));
if (keymap->layout_handles->len <= 0)
active_hkl = GetKeyboardLayout (0);
else
active_hkl = g_array_index (keymap->layout_handles, HKL, keymap->active_layout);
return get_hkl_direction (active_hkl);
}
static gboolean
gdk_win32_keymap_have_bidi_layouts (GdkKeymap *gdk_keymap)
{
GdkWin32Keymap *keymap;
gboolean have_rtl = FALSE;
gboolean have_ltr = FALSE;
int group;
GdkKeymap *default_keymap = gdk_display_get_keymap (gdk_display_get_default ());
if (gdk_keymap == NULL || gdk_keymap != default_keymap)
keymap = GDK_WIN32_KEYMAP (default_keymap);
else
keymap = GDK_WIN32_KEYMAP (gdk_keymap);
update_keymap (GDK_KEYMAP (keymap));
for (group = 0; group < keymap->layout_handles->len; group++)
{
if (get_hkl_direction (g_array_index (keymap->layout_handles, HKL, group)) == PANGO_DIRECTION_RTL)
have_rtl = TRUE;
else
have_ltr = TRUE;
}
return have_ltr && have_rtl;
}
static gboolean
gdk_win32_keymap_get_caps_lock_state (GdkKeymap *keymap)
{
(void) keymap;
return ((GetKeyState (VK_CAPITAL) & 1) != 0);
}
static gboolean
gdk_win32_keymap_get_num_lock_state (GdkKeymap *keymap)
{
(void) keymap;
return ((GetKeyState (VK_NUMLOCK) & 1) != 0);
}
static gboolean
gdk_win32_keymap_get_scroll_lock_state (GdkKeymap *keymap)
{
(void) keymap;
return ((GetKeyState (VK_SCROLL) & 1) != 0);
}
static gboolean
gdk_win32_keymap_get_entries_for_keyval (GdkKeymap *gdk_keymap,
guint keyval,
GArray *retval)
{
GdkKeymap *default_keymap = gdk_display_get_keymap (gdk_display_get_default ());
guint len = retval->len;
g_return_val_if_fail (gdk_keymap == NULL || GDK_IS_KEYMAP (gdk_keymap), FALSE);
g_return_val_if_fail (keyval != 0, FALSE);
/* Accept only the default keymap */
if (gdk_keymap == NULL || gdk_keymap == default_keymap)
{
int vk;
GdkWin32Keymap *keymap;
if (gdk_keymap == NULL)
keymap = GDK_WIN32_KEYMAP (default_keymap);
else
keymap = GDK_WIN32_KEYMAP (gdk_keymap);
update_keymap (gdk_keymap);
for (vk = 0; vk < KEY_STATE_SIZE; vk++)
{
int group;
for (group = 0; group < keymap->layout_handles->len; group++)
{
GdkWin32KeyLevelState level;
for (level = GDK_WIN32_LEVEL_NONE; level < GDK_WIN32_LEVEL_COUNT; level++)
{
guint *keygroup;
keygroup = &keymap->keysym_tab[(vk * keymap->layout_handles->len + group) * GDK_WIN32_LEVEL_COUNT];
if (keygroup[level] == keyval)
{
GdkKeymapKey key;
key.keycode = vk;
key.group = group;
key.level = level;
g_array_append_val (retval, key);
}
}
}
}
}
#ifdef G_ENABLE_DEBUG
if (_gdk_debug_flags & GDK_DEBUG_EVENTS)
{
guint i;
g_print ("gdk_keymap_get_entries_for_keyval: %#.04x (%s):",
keyval, gdk_keyval_name (keyval));
for (i = len; i < retval->len; i++)
{
GdkKeymapKey *entry = (GdkKeymapKey *) retval->data + i;
g_print (" %#.02x %d %d", entry->keycode, entry->group, entry->level);
}
g_print ("\n");
}
#endif
return len < retval->len;
}
static gboolean
gdk_win32_keymap_get_entries_for_keycode (GdkKeymap *gdk_keymap,
guint hardware_keycode,
GdkKeymapKey **keys,
guint **keyvals,
int *n_entries)
{
GArray *key_array;
GArray *keyval_array;
int group;
GdkWin32Keymap *keymap;
GdkKeymap *default_keymap = gdk_display_get_keymap (gdk_display_get_default ());
g_return_val_if_fail (gdk_keymap == NULL || GDK_IS_KEYMAP (gdk_keymap), FALSE);
g_return_val_if_fail (n_entries != NULL, FALSE);
if (hardware_keycode <= 0 ||
hardware_keycode >= KEY_STATE_SIZE ||
(keys == NULL && keyvals == NULL) ||
(gdk_keymap != NULL && gdk_keymap != default_keymap))
{
/* Wrong keycode or NULL output arrays or wrong keymap */
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;
keymap = GDK_WIN32_KEYMAP (default_keymap);
update_keymap (GDK_KEYMAP (keymap));
for (group = 0; group < keymap->layout_handles->len; group++)
{
GdkWin32KeyLevelState level;
for (level = GDK_WIN32_LEVEL_NONE; level < GDK_WIN32_LEVEL_COUNT; 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)
{
guint keyval = keymap->keysym_tab[(hardware_keycode * keymap->layout_handles->len + group) * GDK_WIN32_LEVEL_COUNT + level];
g_array_append_val (keyval_array, keyval);
}
}
}
*n_entries = group * GDK_WIN32_LEVEL_COUNT;
if ((key_array && key_array->len > 0) ||
(keyval_array && keyval_array->len > 0))
{
if (keys)
*keys = (GdkKeymapKey*) key_array->data;
if (keyvals)
*keyvals = (guint*) keyval_array->data;
}
else
{
if (keys)
*keys = NULL;
if (keyvals)
*keyvals = NULL;
}
if (key_array)
g_array_free (key_array, key_array->len > 0 ? FALSE : TRUE);
if (keyval_array)
g_array_free (keyval_array, keyval_array->len > 0 ? FALSE : TRUE);
return *n_entries > 0;
}
static guint
gdk_win32_keymap_lookup_key (GdkKeymap *gdk_keymap,
const GdkKeymapKey *key)
{
guint sym;
GdkWin32Keymap *keymap;
GdkKeymap *default_keymap = gdk_display_get_keymap (gdk_display_get_default ());
g_return_val_if_fail (gdk_keymap == NULL || GDK_IS_KEYMAP (gdk_keymap), 0);
g_return_val_if_fail (key != NULL, 0);
/* Accept only the default keymap */
if (gdk_keymap != NULL && gdk_keymap != default_keymap)
return 0;
keymap = GDK_WIN32_KEYMAP (default_keymap);
update_keymap (GDK_KEYMAP (keymap));
if (key->keycode >= KEY_STATE_SIZE ||
key->group < 0 || key->group >= keymap->layout_handles->len ||
key->level < 0 || key->level >= GDK_WIN32_LEVEL_COUNT)
return 0;
sym = keymap->keysym_tab[(key->keycode * keymap->layout_handles->len + key->group) * GDK_WIN32_LEVEL_COUNT + key->level];
if (sym == GDK_KEY_VoidSymbol)
return 0;
else
return sym;
}
static gboolean
gdk_win32_keymap_translate_keyboard_state (GdkKeymap *gdk_keymap,
guint hardware_keycode,
GdkModifierType state,
int group,
guint *keyval,
int *effective_group,
int *level,
GdkModifierType *consumed_modifiers)
{
GdkWin32Keymap *keymap;
guint tmp_keyval;
guint *keygroup;
GdkWin32KeyLevelState shift_level;
GdkModifierType modifiers = GDK_SHIFT_MASK | GDK_LOCK_MASK | GDK_MOD2_MASK;
GdkKeymap *default_keymap = gdk_display_get_keymap (gdk_display_get_default ());
g_return_val_if_fail (gdk_keymap == NULL || GDK_IS_KEYMAP (gdk_keymap), FALSE);
#if 0
GDK_NOTE (EVENTS, g_print ("gdk_keymap_translate_keyboard_state: keycode=%#x state=%#x group=%d\n",
hardware_keycode, state, group));
#endif
if (keyval)
*keyval = 0;
if (effective_group)
*effective_group = 0;
if (level)
*level = 0;
if (consumed_modifiers)
*consumed_modifiers = 0;
/* Accept only the default keymap */
if (gdk_keymap != NULL && gdk_keymap != default_keymap)
return FALSE;
if (hardware_keycode >= KEY_STATE_SIZE)
return FALSE;
keymap = GDK_WIN32_KEYMAP (default_keymap);
update_keymap (GDK_KEYMAP (keymap));
if (group < 0 || group >= keymap->layout_handles->len)
return FALSE;
keygroup = &keymap->keysym_tab[(hardware_keycode * keymap->layout_handles->len + group) * GDK_WIN32_LEVEL_COUNT];
if ((state & (GDK_SHIFT_MASK | GDK_LOCK_MASK)) == (GDK_SHIFT_MASK | GDK_LOCK_MASK))
shift_level = GDK_WIN32_LEVEL_SHIFT_CAPSLOCK;
else if (state & GDK_SHIFT_MASK)
shift_level = GDK_WIN32_LEVEL_SHIFT;
else if (state & GDK_LOCK_MASK)
shift_level = GDK_WIN32_LEVEL_CAPSLOCK;
else
shift_level = GDK_WIN32_LEVEL_NONE;
if (state & GDK_MOD2_MASK)
{
if (shift_level == GDK_WIN32_LEVEL_NONE)
shift_level = GDK_WIN32_LEVEL_ALTGR;
else if (shift_level == GDK_WIN32_LEVEL_SHIFT)
shift_level = GDK_WIN32_LEVEL_SHIFT_ALTGR;
else if (shift_level == GDK_WIN32_LEVEL_CAPSLOCK)
shift_level = GDK_WIN32_LEVEL_CAPSLOCK_ALTGR;
else
shift_level = GDK_WIN32_LEVEL_SHIFT_CAPSLOCK_ALTGR;
}
/* Drop altgr, capslock and shift if there are no keysymbols on
* the key for those.
*/
if (keygroup[shift_level] == GDK_KEY_VoidSymbol)
{
switch (shift_level)
{
case GDK_WIN32_LEVEL_NONE:
case GDK_WIN32_LEVEL_ALTGR:
case GDK_WIN32_LEVEL_SHIFT:
case GDK_WIN32_LEVEL_CAPSLOCK:
if (keygroup[GDK_WIN32_LEVEL_NONE] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_NONE;
break;
case GDK_WIN32_LEVEL_SHIFT_CAPSLOCK:
if (keygroup[GDK_WIN32_LEVEL_CAPSLOCK] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_CAPSLOCK;
else if (keygroup[GDK_WIN32_LEVEL_SHIFT] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_SHIFT;
else if (keygroup[GDK_WIN32_LEVEL_NONE] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_NONE;
break;
case GDK_WIN32_LEVEL_CAPSLOCK_ALTGR:
if (keygroup[GDK_WIN32_LEVEL_ALTGR] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_ALTGR;
else if (keygroup[GDK_WIN32_LEVEL_CAPSLOCK] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_CAPSLOCK;
else if (keygroup[GDK_WIN32_LEVEL_NONE] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_NONE;
break;
case GDK_WIN32_LEVEL_SHIFT_ALTGR:
if (keygroup[GDK_WIN32_LEVEL_ALTGR] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_ALTGR;
else if (keygroup[GDK_WIN32_LEVEL_SHIFT] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_SHIFT;
else if (keygroup[GDK_WIN32_LEVEL_NONE] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_NONE;
break;
case GDK_WIN32_LEVEL_SHIFT_CAPSLOCK_ALTGR:
if (keygroup[GDK_WIN32_LEVEL_CAPSLOCK_ALTGR] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_CAPSLOCK_ALTGR;
else if (keygroup[GDK_WIN32_LEVEL_SHIFT_ALTGR] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_SHIFT_ALTGR;
else if (keygroup[GDK_WIN32_LEVEL_ALTGR] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_ALTGR;
else if (keygroup[GDK_WIN32_LEVEL_SHIFT_CAPSLOCK] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_SHIFT_CAPSLOCK;
else if (keygroup[GDK_WIN32_LEVEL_CAPSLOCK] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_CAPSLOCK;
else if (keygroup[GDK_WIN32_LEVEL_SHIFT] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_SHIFT;
else if (keygroup[GDK_WIN32_LEVEL_NONE] != GDK_KEY_VoidSymbol)
shift_level = GDK_WIN32_LEVEL_NONE;
break;
case GDK_WIN32_LEVEL_COUNT:
g_assert_not_reached ();
}
}
/* See whether the shift level actually mattered
* to know what to put in consumed_modifiers
*/
if ((keygroup[GDK_WIN32_LEVEL_SHIFT] == GDK_KEY_VoidSymbol ||
keygroup[GDK_WIN32_LEVEL_NONE] == keygroup[GDK_WIN32_LEVEL_SHIFT]) &&
(keygroup[GDK_WIN32_LEVEL_SHIFT_ALTGR] == GDK_KEY_VoidSymbol ||
keygroup[GDK_WIN32_LEVEL_ALTGR] == keygroup[GDK_WIN32_LEVEL_SHIFT_ALTGR]) &&
(keygroup[GDK_WIN32_LEVEL_SHIFT_CAPSLOCK] == GDK_KEY_VoidSymbol ||
keygroup[GDK_WIN32_LEVEL_CAPSLOCK] == keygroup[GDK_WIN32_LEVEL_SHIFT_CAPSLOCK]))
modifiers &= ~GDK_SHIFT_MASK;
if ((keygroup[GDK_WIN32_LEVEL_CAPSLOCK] == GDK_KEY_VoidSymbol ||
keygroup[GDK_WIN32_LEVEL_NONE] == keygroup[GDK_WIN32_LEVEL_CAPSLOCK]) &&
(keygroup[GDK_WIN32_LEVEL_CAPSLOCK_ALTGR] == GDK_KEY_VoidSymbol ||
keygroup[GDK_WIN32_LEVEL_ALTGR] == keygroup[GDK_WIN32_LEVEL_CAPSLOCK_ALTGR]) &&
(keygroup[GDK_WIN32_LEVEL_SHIFT_CAPSLOCK] == GDK_KEY_VoidSymbol ||
keygroup[GDK_WIN32_LEVEL_SHIFT] == keygroup[GDK_WIN32_LEVEL_SHIFT_CAPSLOCK]))
modifiers &= ~GDK_LOCK_MASK;
if ((keygroup[GDK_WIN32_LEVEL_ALTGR] == GDK_KEY_VoidSymbol ||
keygroup[GDK_WIN32_LEVEL_NONE] == keygroup[GDK_WIN32_LEVEL_ALTGR]) &&
(keygroup[GDK_WIN32_LEVEL_SHIFT_ALTGR] == GDK_KEY_VoidSymbol ||
keygroup[GDK_WIN32_LEVEL_SHIFT] == keygroup[GDK_WIN32_LEVEL_SHIFT_ALTGR]) &&
(keygroup[GDK_WIN32_LEVEL_CAPSLOCK_ALTGR] == GDK_KEY_VoidSymbol ||
keygroup[GDK_WIN32_LEVEL_CAPSLOCK] == keygroup[GDK_WIN32_LEVEL_CAPSLOCK_ALTGR]))
modifiers &= ~GDK_MOD2_MASK;
tmp_keyval = keygroup[shift_level];
if (keyval)
*keyval = tmp_keyval;
if (effective_group)
*effective_group = group;
if (level)
*level = shift_level;
if (consumed_modifiers)
*consumed_modifiers = modifiers;
#if 0
GDK_NOTE (EVENTS, g_print ("... group=%d level=%d cmods=%#x keyval=%s\n",
group, shift_level, modifiers, gdk_keyval_name (tmp_keyval)));
#endif
return tmp_keyval != GDK_KEY_VoidSymbol;
}
static void
gdk_win32_keymap_class_init (GdkWin32KeymapClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GdkKeymapClass *keymap_class = GDK_KEYMAP_CLASS (klass);
object_class->finalize = gdk_win32_keymap_finalize;
keymap_class->get_direction = gdk_win32_keymap_get_direction;
keymap_class->have_bidi_layouts = gdk_win32_keymap_have_bidi_layouts;
keymap_class->get_caps_lock_state = gdk_win32_keymap_get_caps_lock_state;
keymap_class->get_num_lock_state = gdk_win32_keymap_get_num_lock_state;
keymap_class->get_scroll_lock_state = gdk_win32_keymap_get_scroll_lock_state;
keymap_class->get_entries_for_keyval = gdk_win32_keymap_get_entries_for_keyval;
keymap_class->get_entries_for_keycode = gdk_win32_keymap_get_entries_for_keycode;
keymap_class->lookup_key = gdk_win32_keymap_lookup_key;
keymap_class->translate_keyboard_state = gdk_win32_keymap_translate_keyboard_state;
}
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