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gtk/gdk/quartz/gdkkeys-quartz.c
Richard Hult 7724832996 Special-case shift-tab and map it to GDK_ISO_Left_Tab, fixes bug #350806. 
2006-09-06  Richard Hult  <richard@imendio.com>

	* gdk/quartz/gdkkeys-quartz.c: (maybe_update_keymap): Special-case
	shift-tab and map it to GDK_ISO_Left_Tab, fixes bug #350806.
2006-09-06 17:29:28 +00:00

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/* gdkkeys-quartz.c
*
* Copyright (C) 2000 Red Hat, Inc.
* Copyright (C) 2005 Imendio AB
*
* 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.
*/
/* Some parts of this code come from quartzKeyboard.c,
* from the Apple X11 Server.
*
* Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT
* HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name(s) of the above
* copyright holders shall not be used in advertising or otherwise to
* promote the sale, use or other dealings in this Software without
* prior written authorization.
*/
#include <config.h>
#include <Carbon/Carbon.h>
#include <AppKit/NSEvent.h>
#include "gdk.h"
#include "gdkkeysyms.h"
#define NUM_KEYCODES 128
#define KEYVALS_PER_KEYCODE 4
static GdkKeymap *default_keymap = NULL;
static KeyboardLayoutRef current_layout = NULL;
/* This is a table of all keyvals. Each keycode gets KEYVALS_PER_KEYCODE entries.
* TThere is 1 keyval per modifier (Nothing, Shift, Alt, Shift+Alt);
*/
static guint *keyval_array = NULL;
static inline UniChar
macroman2ucs (unsigned char c)
{
/* Precalculated table mapping MacRoman-128 to Unicode. Generated
by creating single element CFStringRefs then extracting the
first character. */
static const unsigned short table[128] = {
0xc4, 0xc5, 0xc7, 0xc9, 0xd1, 0xd6, 0xdc, 0xe1,
0xe0, 0xe2, 0xe4, 0xe3, 0xe5, 0xe7, 0xe9, 0xe8,
0xea, 0xeb, 0xed, 0xec, 0xee, 0xef, 0xf1, 0xf3,
0xf2, 0xf4, 0xf6, 0xf5, 0xfa, 0xf9, 0xfb, 0xfc,
0x2020, 0xb0, 0xa2, 0xa3, 0xa7, 0x2022, 0xb6, 0xdf,
0xae, 0xa9, 0x2122, 0xb4, 0xa8, 0x2260, 0xc6, 0xd8,
0x221e, 0xb1, 0x2264, 0x2265, 0xa5, 0xb5, 0x2202, 0x2211,
0x220f, 0x3c0, 0x222b, 0xaa, 0xba, 0x3a9, 0xe6, 0xf8,
0xbf, 0xa1, 0xac, 0x221a, 0x192, 0x2248, 0x2206, 0xab,
0xbb, 0x2026, 0xa0, 0xc0, 0xc3, 0xd5, 0x152, 0x153,
0x2013, 0x2014, 0x201c, 0x201d, 0x2018, 0x2019, 0xf7, 0x25ca,
0xff, 0x178, 0x2044, 0x20ac, 0x2039, 0x203a, 0xfb01, 0xfb02,
0x2021, 0xb7, 0x201a, 0x201e, 0x2030, 0xc2, 0xca, 0xc1,
0xcb, 0xc8, 0xcd, 0xce, 0xcf, 0xcc, 0xd3, 0xd4,
0xf8ff, 0xd2, 0xda, 0xdb, 0xd9, 0x131, 0x2c6, 0x2dc,
0xaf, 0x2d8, 0x2d9, 0x2da, 0xb8, 0x2dd, 0x2db, 0x2c7
};
if (c < 128)
return c;
else
return table[c - 128];
}
const static struct {
guint keycode;
guint keyval;
unsigned int modmask; /* So we can tell when a mod key is pressed/released */
} known_keys[] = {
{ 54, GDK_Meta_R, NSCommandKeyMask },
{ 55, GDK_Meta_L, NSCommandKeyMask },
{ 56, GDK_Shift_L, NSShiftKeyMask },
{ 57, GDK_Caps_Lock, NSAlphaShiftKeyMask },
{ 58, GDK_Alt_L, NSAlternateKeyMask },
{ 59, GDK_Control_L, NSControlKeyMask },
{ 60, GDK_Shift_R, NSShiftKeyMask },
{ 61, GDK_Alt_R, NSAlternateKeyMask },
{ 62, GDK_Control_R, NSControlKeyMask },
{ 122, GDK_F1, 0 },
{ 120, GDK_F2, 0 },
{ 99, GDK_F3, 0 },
{ 118, GDK_F4, 0 },
{ 96, GDK_F5, 0 },
{ 97, GDK_F6, 0 },
{ 98, GDK_F7, 0 },
{ 100, GDK_F8, 0 },
{ 101, GDK_F9, 0 },
{ 109, GDK_F10, 0 },
{ 103, GDK_F11, 0 },
{ 111, GDK_F12, 0 },
{ 105, GDK_F13, 0 },
{ 107, GDK_F14, 0 },
{ 113, GDK_F15, 0 }
};
const static struct {
guint keycode;
guint normal_keyval, keypad_keyval;
} known_numeric_keys[] = {
{ 65, GDK_period, GDK_KP_Decimal },
{ 67, GDK_asterisk, GDK_KP_Multiply },
{ 69, GDK_plus, GDK_KP_Add },
{ 75, GDK_slash, GDK_KP_Divide },
{ 76, 0x01000003, GDK_KP_Enter },
{ 78, GDK_minus, GDK_KP_Subtract },
{ 81, GDK_equal, GDK_KP_Equal },
{ 82, GDK_0, GDK_KP_0 },
{ 83, GDK_1, GDK_KP_1 },
{ 84, GDK_2, GDK_KP_2 },
{ 85, GDK_3, GDK_KP_3 },
{ 86, GDK_4, GDK_KP_4 },
{ 87, GDK_5, GDK_KP_5 },
{ 88, GDK_6, GDK_KP_6 },
{ 89, GDK_7, GDK_KP_7 },
{ 91, GDK_8, GDK_KP_8 },
{ 92, GDK_9, GDK_KP_9 }
};
/* These values aren't covered by gdk_unicode_to_keyval */
const static struct {
gunichar ucs_value;
guint keyval;
} special_ucs_table [] = {
{ 0x0001, GDK_Home },
{ 0x0003, GDK_Return },
{ 0x0004, GDK_End },
{ 0x0008, GDK_BackSpace },
{ 0x0009, GDK_Tab },
{ 0x000b, GDK_Page_Up },
{ 0x000c, GDK_Page_Down },
{ 0x000d, GDK_Return },
{ 0x001b, GDK_Escape },
{ 0x001c, GDK_Left },
{ 0x001d, GDK_Right },
{ 0x001e, GDK_Up },
{ 0x001f, GDK_Down },
{ 0x007f, GDK_Delete }
};
static void
maybe_update_keymap (void)
{
KeyboardLayoutRef new_layout;
KLGetCurrentKeyboardLayout (&new_layout);
if (new_layout != current_layout)
{
guint *p;
int i;
KeyboardLayoutKind layout_kind;
g_free (keyval_array);
keyval_array = g_new0 (guint, NUM_KEYCODES * KEYVALS_PER_KEYCODE);
/* Get the layout kind */
KLGetKeyboardLayoutProperty (new_layout, kKLKind, (const void **)&layout_kind);
/* 8-bit-only keyabord layout */
if (layout_kind == kKLKCHRKind)
{
const void *chr_data;
/* Get chr data */
KLGetKeyboardLayoutProperty (new_layout, kKLKCHRData, (const void **)&chr_data);
for (i = 0; i < NUM_KEYCODES; i++)
{
int j;
UInt32 modifiers[] = {0, shiftKey, optionKey, shiftKey | optionKey};
p = keyval_array + i * KEYVALS_PER_KEYCODE;
for (j = 0; j < KEYVALS_PER_KEYCODE; j++)
{
UInt32 c, state = 0;
UInt16 key_code;
UniChar uc;
key_code = modifiers[j] | i;
c = KeyTranslate (chr_data, key_code, &state);
if (state != 0)
{
UInt32 state2 = 0;
c = KeyTranslate (chr_data, key_code | 128, &state2);
}
if (c != 0 && c != 0x10)
{
int k;
gboolean found = FALSE;
/* FIXME: some keyboard layouts (e.g. Russian) use
* a different 8-bit character set. We should
* check for this. Not a serious problem, because
* most (all?) of these layouts also have a
* uchr version.
*/
uc = macroman2ucs (c);
for (k = 0; k < G_N_ELEMENTS (special_ucs_table); k++)
{
if (special_ucs_table[k].ucs_value == uc)
{
p[j] = special_ucs_table[k].keyval;
found = TRUE;
break;
}
}
/* Special-case shift-tab since GTK+ expects
* GDK_ISO_Left_Tab for that.
*/
if (found && p[j] == GDK_Tab && modifiers[j] == shiftKey)
p[j] = GDK_ISO_Left_Tab;
if (!found)
p[j] = gdk_unicode_to_keyval (uc);
}
}
if (p[3] == p[2])
p[3] = 0;
if (p[2] == p[1])
p[2] = 0;
if (p[1] == p[0])
p[1] = 0;
if (p[0] == p[2] &&
p[1] == p[3])
p[2] = p[3] = 0;
}
}
/* unicode keyboard layout */
else if (layout_kind == kKLKCHRuchrKind || layout_kind == kKLuchrKind)
{
const void *chr_data;
/* Get chr data */
KLGetKeyboardLayoutProperty (new_layout, kKLuchrData, (const void **)&chr_data);
for (i = 0; i < NUM_KEYCODES; i++)
{
int j;
UInt32 modifiers[] = {0, shiftKey, optionKey, shiftKey | optionKey};
UniChar chars[4];
UniCharCount nChars;
p = keyval_array + i * KEYVALS_PER_KEYCODE;
for (j = 0; j < KEYVALS_PER_KEYCODE; j++)
{
UInt32 state = 0;
OSStatus err;
UInt16 key_code;
UniChar uc;
key_code = modifiers[j] | i;
err = UCKeyTranslate (chr_data, i, kUCKeyActionDown,
(modifiers[j] >> 8) & 0xFF,
LMGetKbdType(),
kUCKeyTranslateNoDeadKeysMask,
&state, 4, &nChars, chars);
/* FIXME: Theoretically, we can get multiple UTF-16 values;
* we should convert them to proper unicode and figure
* out whether there are really keyboard layouts that
* give us more than one character for one keypress. */
if (err == noErr && nChars == 1)
{
int k;
gboolean found = FALSE;
uc = chars[0];
for (k = 0; k < G_N_ELEMENTS (special_ucs_table); k++)
{
if (special_ucs_table[k].ucs_value == uc)
{
p[j] = special_ucs_table[k].keyval;
found = TRUE;
break;
}
}
if (!found)
p[j] = gdk_unicode_to_keyval (uc);
}
}
if (p[3] == p[2])
p[3] = 0;
if (p[2] == p[1])
p[2] = 0;
if (p[1] == p[0])
p[1] = 0;
if (p[0] == p[2] &&
p[1] == p[3])
p[2] = p[3] = 0;
}
}
else
{
g_error ("unknown type of keyboard layout (neither KCHR nor uchr)"
" - not supported right now");
}
for (i = 0; i < G_N_ELEMENTS (known_keys); i++)
{
p = keyval_array + known_keys[i].keycode * KEYVALS_PER_KEYCODE;
if (p[0] == 0 && p[1] == 0 &&
p[2] == 0 && p[3] == 0)
p[0] = known_keys[i].keyval;
}
for (i = 0; i < G_N_ELEMENTS (known_numeric_keys); i++)
{
p = keyval_array + known_numeric_keys[i].keycode * KEYVALS_PER_KEYCODE;
if (p[0] == known_numeric_keys[i].normal_keyval);
p[0] = known_numeric_keys[i].keypad_keyval;
}
if (current_layout)
g_signal_emit_by_name (default_keymap, "keys_changed");
current_layout = new_layout;
}
}
GdkKeymap *
gdk_keymap_get_for_display (GdkDisplay *display)
{
g_return_val_if_fail (display == gdk_display_get_default (), NULL);
if (default_keymap == NULL)
default_keymap = g_object_new (gdk_keymap_get_type (), NULL);
return default_keymap;
}
PangoDirection
gdk_keymap_get_direction (GdkKeymap *keymap)
{
return PANGO_DIRECTION_NEUTRAL;
}
gboolean
gdk_keymap_get_entries_for_keyval (GdkKeymap *keymap,
guint keyval,
GdkKeymapKey **keys,
gint *n_keys)
{
GArray *keys_array;
int i;
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);
maybe_update_keymap ();
*n_keys = 0;
keys_array = g_array_new (FALSE, FALSE, sizeof (GdkKeymapKey));
for (i = 0; i < NUM_KEYCODES * KEYVALS_PER_KEYCODE; i++)
{
GdkKeymapKey key;
if (keyval_array[i] != keyval)
continue;
(*n_keys)++;
key.keycode = i / KEYVALS_PER_KEYCODE;
key.group = 0;
key.level = i % KEYVALS_PER_KEYCODE;
g_array_append_val (keys_array, key);
}
*keys = (GdkKeymapKey *)g_array_free (keys_array, FALSE);
return *n_keys > 0;;
}
gboolean
gdk_keymap_get_entries_for_keycode (GdkKeymap *keymap,
guint hardware_keycode,
GdkKeymapKey **keys,
guint **keyvals,
gint *n_entries)
{
GArray *keys_array, *keyvals_array;
int i;
guint *p;
g_return_val_if_fail (keymap == NULL || GDK_IS_KEYMAP (keymap), FALSE);
g_return_val_if_fail (n_entries != NULL, FALSE);
maybe_update_keymap ();
*n_entries = 0;
if (hardware_keycode > NUM_KEYCODES)
return FALSE;
if (keys)
keys_array = g_array_new (FALSE, FALSE, sizeof (GdkKeymapKey));
else
keys_array = NULL;
if (keyvals)
keyvals_array = g_array_new (FALSE, FALSE, sizeof (guint));
else
keyvals_array = NULL;
p = keyval_array + hardware_keycode * KEYVALS_PER_KEYCODE;
for (i = 0; i < KEYVALS_PER_KEYCODE; i++)
{
if (!p[i])
continue;
(*n_entries)++;
if (keyvals_array)
g_array_append_val (keyvals_array, p[i]);
if (keys_array)
{
GdkKeymapKey key;
key.keycode = hardware_keycode;
key.group = i / 2;
key.level = i % 2;
g_array_append_val (keys_array, key);
}
}
if (keys)
*keys = (GdkKeymapKey *)g_array_free (keys_array, FALSE);
if (keyvals)
*keyvals = (guint *)g_array_free (keyvals_array, FALSE);
return *n_entries > 0;
}
guint
gdk_keymap_lookup_key (GdkKeymap *keymap,
const GdkKeymapKey *key)
{
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);
/* FIXME: Implement */
return 0;
}
#define GET_KEYVAL(keycode, group, level) (keyval_array[(keycode * KEYVALS_PER_KEYCODE + group * 2 + level)])
static guint
translate_keysym (guint hardware_keycode,
gint group,
GdkModifierType state,
gint *effective_group,
gint *effective_level)
{
gint level;
guint tmp_keyval;
level = (state & GDK_SHIFT_MASK) ? 1 : 0;
if (!(GET_KEYVAL (hardware_keycode, group, 0) || GET_KEYVAL (hardware_keycode, group, 1)) &&
(GET_KEYVAL (hardware_keycode, 0, 0) || GET_KEYVAL (hardware_keycode, 0, 1)))
group = 0;
if (!GET_KEYVAL (hardware_keycode, group, level) &&
GET_KEYVAL (hardware_keycode, group, 0))
level = 0;
tmp_keyval = GET_KEYVAL (hardware_keycode, group, level);
if (state & GDK_LOCK_MASK)
{
guint upper = gdk_keyval_to_upper (tmp_keyval);
if (upper != tmp_keyval)
tmp_keyval = upper;
}
return tmp_keyval;
}
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)
{
guint tmp_keyval;
GdkModifierType bit;
guint tmp_modifiers = 0;
g_return_val_if_fail (keymap == NULL || GDK_IS_KEYMAP (keymap), FALSE);
g_return_val_if_fail (group >= 0 && group <= 1, FALSE);
maybe_update_keymap ();
if (keyval)
*keyval = 0;
if (effective_group)
*effective_group = 0;
if (level)
*level = 0;
if (consumed_modifiers)
*consumed_modifiers = 0;
if (hardware_keycode < 0 || hardware_keycode >= NUM_KEYCODES)
return FALSE;
/* Check if shift or capslock modify the keyval */
for (bit = GDK_SHIFT_MASK; bit < GDK_CONTROL_MASK; bit <<= 1)
{
if (translate_keysym (hardware_keycode, group, state & ~bit, NULL, NULL) !=
translate_keysym (hardware_keycode, group, state | bit, NULL, NULL))
tmp_modifiers |= bit;
}
tmp_keyval = translate_keysym (hardware_keycode, group, state, level, effective_group);
if (consumed_modifiers)
*consumed_modifiers = tmp_modifiers;
if (keyval)
*keyval = tmp_keyval;
return TRUE;
}
/* What sort of key event is this? Returns one of
* GDK_KEY_PRESS, GDK_KEY_RELEASE, GDK_NOTHING (should be ignored)
*/
GdkEventType
_gdk_quartz_key_event_type (NSEvent *event)
{
unsigned short keycode;
unsigned int flags;
int i;
switch ([event type])
{
case NSKeyDown:
return GDK_KEY_PRESS;
case NSKeyUp:
return GDK_KEY_RELEASE;
case NSFlagsChanged:
break;
default:
g_assert_not_reached ();
}
/* For flags-changed events, we have to find the special key that caused the
* event, and see if it's in the modifier mask. */
keycode = [event keyCode];
flags = [event modifierFlags];
for (i = 0; i < G_N_ELEMENTS (known_keys); i++)
{
if (known_keys[i].keycode == keycode)
{
if (flags & known_keys[i].modmask)
return GDK_KEY_PRESS;
else
return GDK_KEY_RELEASE;
}
}
/* Some keypresses (eg: Expose' activations) seem to trigger flags-changed
* events for no good reason. Ignore them! */
return GDK_NOTHING;
}
gboolean
_gdk_quartz_key_is_modifier (guint keycode)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (known_keys); i++)
{
if (known_keys[i].modmask == 0)
break;
if (known_keys[i].keycode == keycode)
return TRUE;
}
return FALSE;
}
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