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gtk2/gdk/gdkkeys.c
Michael Natterer 5b74ee38e8 gdk: fix gdk_keyval_to_lower/upper() for Quartz, Win32 and Broadway 
In 2.x, the !HAVE_XCONVERTCASE fallback of keyval_convert_case() was
implicitly used as implementation for all !X11 backends.

In 3.x, when this function was virtualized in GdkDisplayManager,
this fallback was moved to the X11 backend and the other backends
"equipped" with /* FIXME implement */ implementations of
keyval_convert_case() which don't convert anything.

Move the fallback code back to gdk/ as default implementation
of GdkDisplayManager::keyval_convert_case() and remove its
implementations is all backends but X11. Also remove the
implementation in Wayland which was a plain copy of what
is now the default implementation.
(cherry picked from commit f46c1b76d8)
2011-10-07 16:19:41 +02:00

841 lines
30 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 "gdkkeysyms.h"
#include "gdkkeysprivate.h"
#include "gdkdisplay.h"
#include "gdkdisplaymanagerprivate.h"
/**
* SECTION:keys
* @Short_description: Functions for manipulating keyboard codes
* @Title: Key Values
*
* Key values are the codes which are sent whenever a key is pressed or released.
* They appear in the #GdkEventKey.keyval field of the
* #GdkEventKey structure, which is passed to signal handlers for the
* #GtkWidget::key-press-event and #GtkWidget::key-release-event signals.
* The complete list of key values can be found in the
* <filename>&lt;gdk/gdkkeysyms.h&gt;</filename> header file.
*
* Key values are regularly updated from the upstream X.org X11 implementation,
* so new values are added regularly. They will be prefixed with GDK_KEY_ rather
* than XF86XK_ or XK_ (for older symbols).
*
* Key values can be converted into a string representation using
* gdk_keyval_name(). The reverse function, converting a string to a key value,
* is provided by gdk_keyval_from_name().
*
* The case of key values can be determined using gdk_keyval_is_upper() and
* gdk_keyval_is_lower(). Key values can be converted to upper or lower case
* using gdk_keyval_to_upper() and gdk_keyval_to_lower().
*
* When it makes sense, key values can be converted to and from
* Unicode characters with gdk_keyval_to_unicode() and gdk_unicode_to_keyval().
*
* <para id="key-group-explanation">
* One #GdkKeymap object exists for each user display. gdk_keymap_get_default()
* returns the #GdkKeymap for the default display; to obtain keymaps for other
* displays, use gdk_keymap_get_for_display(). A keymap
* is a mapping from #GdkKeymapKey to key values. You can think of a #GdkKeymapKey
* as a representation of a symbol printed on a physical keyboard key. That is, it
* contains three pieces of information. First, it contains the hardware keycode;
* this is an identifying number for a physical key. Second, it contains the
* <firstterm>level</firstterm> of the key. The level indicates which symbol on the
* key will be used, in a vertical direction. So on a standard US keyboard, the key
* with the number "1" on it also has the exclamation point ("!") character on
* it. The level indicates whether to use the "1" or the "!" symbol. The letter
* keys are considered to have a lowercase letter at level 0, and an uppercase
* letter at level 1, though only the uppercase letter is printed. Third, the
* #GdkKeymapKey contains a group; groups are not used on standard US keyboards,
* but are used in many other countries. On a keyboard with groups, there can be 3
* or 4 symbols printed on a single key. The group indicates movement in a
* horizontal direction. Usually groups are used for two different languages. In
* group 0, a key might have two English characters, and in group 1 it might have
* two Hebrew characters. The Hebrew characters will be printed on the key next to
* the English characters.
* </para>
*
* In order to use a keymap to interpret a key event, it's necessary to first
* convert the keyboard state into an effective group and level. This is done via a
* set of rules that varies widely according to type of keyboard and user
* configuration. The function gdk_keymap_translate_keyboard_state() accepts a
* keyboard state -- consisting of hardware keycode pressed, active modifiers, and
* active group -- applies the appropriate rules, and returns the group/level to be
* used to index the keymap, along with the modifiers which did not affect the
* group and level. i.e. it returns "unconsumed modifiers." The keyboard group may
* differ from the effective group used for keymap lookups because some keys don't
* have multiple groups - e.g. the Enter key is always in group 0 regardless of
* keyboard state.
*
* Note that gdk_keymap_translate_keyboard_state() also returns the keyval, i.e. it
* goes ahead and performs the keymap lookup in addition to telling you which
* effective group/level values were used for the lookup. #GdkEventKey already
* contains this keyval, however, so you don't normally need to call
* gdk_keymap_translate_keyboard_state() just to get the keyval.
*/
enum {
DIRECTION_CHANGED,
KEYS_CHANGED,
STATE_CHANGED,
LAST_SIGNAL
};
static GdkModifierType gdk_keymap_real_get_modifier_mask (GdkKeymap *keymap,
GdkModifierIntent intent);
static guint signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE (GdkKeymap, gdk_keymap, G_TYPE_OBJECT)
static void
gdk_keymap_class_init (GdkKeymapClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
klass->get_modifier_mask = gdk_keymap_real_get_modifier_mask;
/**
* GdkKeymap::direction-changed:
* @keymap: the object on which the signal is emitted
*
* The ::direction-changed signal gets emitted when the direction of
* the keymap changes.
*
* Since: 2.0
*/
signals[DIRECTION_CHANGED] =
g_signal_new ("direction-changed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GdkKeymapClass, direction_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE,
0);
/**
* GdkKeymap::keys-changed:
* @keymap: the object on which the signal is emitted
*
* The ::keys-changed signal is emitted when the mapping represented by
* @keymap changes.
*
* Since: 2.2
*/
signals[KEYS_CHANGED] =
g_signal_new ("keys-changed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GdkKeymapClass, keys_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE,
0);
/**
* GdkKeymap::state-changed:
* @keymap: the object on which the signal is emitted
*
* The ::state-changed signal is emitted when the state of the
* keyboard changes, e.g when Caps Lock is turned on or off.
* See gdk_keymap_get_caps_lock_state().
*
* Since: 2.16
*/
signals[STATE_CHANGED] =
g_signal_new ("state_changed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GdkKeymapClass, state_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE,
0);
}
static void
gdk_keymap_init (GdkKeymap *keymap)
{
}
/* Other key-handling stuff
*/
/**
* gdk_keyval_convert_case:
* @symbol: a keyval
* @lower: (out): return location for lowercase version of @symbol
* @upper: (out): return location for uppercase version of @symbol
*
* Obtains the upper- and lower-case versions of the keyval @symbol.
* Examples of keyvals are #GDK_KEY_a, #GDK_KEY_Enter, #GDK_KEY_F1, etc.
*/
void
gdk_keyval_convert_case (guint symbol,
guint *lower,
guint *upper)
{
GdkDisplayManager *manager = gdk_display_manager_get ();
GDK_DISPLAY_MANAGER_GET_CLASS (manager)->keyval_convert_case (manager, symbol, lower, upper);
}
/**
* gdk_keyval_to_upper:
* @keyval: a key value.
*
* Converts a key value to upper case, if applicable.
*
* Returns: the upper case form of @keyval, or @keyval itself if it is already
* in upper case or it is not subject to case conversion.
*/
guint
gdk_keyval_to_upper (guint keyval)
{
guint result;
gdk_keyval_convert_case (keyval, NULL, &result);
return result;
}
/**
* gdk_keyval_to_lower:
* @keyval: a key value.
*
* Converts a key value to lower case, if applicable.
*
* Returns: the lower case form of @keyval, or @keyval itself if it is already
* in lower case or it is not subject to case conversion.
*/
guint
gdk_keyval_to_lower (guint keyval)
{
guint result;
gdk_keyval_convert_case (keyval, &result, NULL);
return result;
}
/**
* gdk_keyval_is_upper:
* @keyval: a key value.
*
* Returns %TRUE if the given key value is in upper case.
*
* Returns: %TRUE if @keyval is in upper case, or if @keyval is not subject to
* case conversion.
*/
gboolean
gdk_keyval_is_upper (guint keyval)
{
if (keyval)
{
guint upper_val = 0;
gdk_keyval_convert_case (keyval, NULL, &upper_val);
return upper_val == keyval;
}
return FALSE;
}
/**
* gdk_keyval_is_lower:
* @keyval: a key value.
*
* Returns %TRUE if the given key value is in lower case.
*
* Returns: %TRUE if @keyval is in lower case, or if @keyval is not
* subject to case conversion.
*/
gboolean
gdk_keyval_is_lower (guint keyval)
{
if (keyval)
{
guint lower_val = 0;
gdk_keyval_convert_case (keyval, &lower_val, NULL);
return lower_val == keyval;
}
return FALSE;
}
/**
* gdk_keymap_get_default:
*
* Returns the #GdkKeymap attached to the default display.
*
* Returns: (transfer none): the #GdkKeymap attached to the default display.
*/
GdkKeymap*
gdk_keymap_get_default (void)
{
return gdk_keymap_get_for_display (gdk_display_get_default ());
}
/**
* gdk_keymap_get_direction:
* @keymap: a #GdkKeymap
*
* 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)
{
g_return_val_if_fail (GDK_IS_KEYMAP (keymap), PANGO_DIRECTION_LTR);
return GDK_KEYMAP_GET_CLASS (keymap)->get_direction (keymap);
}
/**
* gdk_keymap_have_bidi_layouts:
* @keymap: a #GdkKeymap
*
* 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)
{
g_return_val_if_fail (GDK_IS_KEYMAP (keymap), FALSE);
return GDK_KEYMAP_GET_CLASS (keymap)->have_bidi_layouts (keymap);
}
/**
* 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)
{
g_return_val_if_fail (GDK_IS_KEYMAP (keymap), FALSE);
return GDK_KEYMAP_GET_CLASS (keymap)->get_caps_lock_state (keymap);
}
/**
* gdk_keymap_get_num_lock_state:
* @keymap: a #GdkKeymap
*
* Returns whether the Num Lock modifer is locked.
*
* Returns: %TRUE if Num Lock is on
*
* Since: 3.0
*/
gboolean
gdk_keymap_get_num_lock_state (GdkKeymap *keymap)
{
g_return_val_if_fail (GDK_IS_KEYMAP (keymap), FALSE);
return GDK_KEYMAP_GET_CLASS (keymap)->get_num_lock_state (keymap);
}
/**
* gdk_keymap_get_entries_for_keyval:
* @keymap: a #GdkKeymap
* @keyval: a keyval, such as %GDK_a, %GDK_Up, %GDK_Return, etc.
* @keys: (out) (array length=n_keys) (transfer full): return location
* for an array of #GdkKeymapKey
* @n_keys: 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)
{
g_return_val_if_fail (GDK_IS_KEYMAP (keymap), FALSE);
return GDK_KEYMAP_GET_CLASS (keymap)->get_entries_for_keyval (keymap, keyval,
keys, n_keys);
}
/**
* gdk_keymap_get_entries_for_keycode:
* @keymap: a #GdkKeymap
* @hardware_keycode: a keycode
* @keys: (out) (array length=n_entries) (transfer full): return
* location for array of #GdkKeymapKey, or %NULL
* @keyvals: (out) (array length=n_entries) (transfer full): 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)
{
g_return_val_if_fail (GDK_IS_KEYMAP (keymap), FALSE);
return GDK_KEYMAP_GET_CLASS (keymap)->get_entries_for_keycode (keymap, hardware_keycode,
keys, keyvals, n_entries);
}
/**
* gdk_keymap_lookup_key:
* @keymap: a #GdkKeymap
* @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)
{
g_return_val_if_fail (GDK_IS_KEYMAP (keymap), 0);
return GDK_KEYMAP_GET_CLASS (keymap)->lookup_key (keymap, key);
}
/**
* gdk_keymap_translate_keyboard_state:
* @keymap: a #GdkKeymap
* @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 <xref linkend="key-group-explanation"/> 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)
{
g_return_val_if_fail (GDK_IS_KEYMAP (keymap), FALSE);
return GDK_KEYMAP_GET_CLASS (keymap)->translate_keyboard_state (keymap,
hardware_keycode,
state,
group,
keyval,
effective_group,
level,
consumed_modifiers);
}
/**
* gdk_keymap_add_virtual_modifiers:
* @keymap: a #GdkKeymap
* @state: (out): pointer to the modifier mask to change
*
* Adds virtual modifiers (i.e. Super, Hyper and Meta) which correspond
* to the real modifiers (i.e Mod2, Mod3, ...) in @modifiers.
* are set in @state to their non-virtual counterparts (i.e. Mod2,
* Mod3,...) and set the corresponding bits in @state.
*
* GDK already does this before delivering key events, but for
* compatibility reasons, it only sets the first virtual modifier
* it finds, whereas this function sets all matching virtual modifiers.
*
* This function is useful when matching key events against
* accelerators.
*
* Since: 2.20
*/
void
gdk_keymap_add_virtual_modifiers (GdkKeymap *keymap,
GdkModifierType *state)
{
g_return_if_fail (GDK_IS_KEYMAP (keymap));
GDK_KEYMAP_GET_CLASS (keymap)->add_virtual_modifiers (keymap, state);
}
/**
* gdk_keymap_map_virtual_modifiers:
* @keymap: a #GdkKeymap
* @state: (out): 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)
{
g_return_val_if_fail (GDK_IS_KEYMAP (keymap), FALSE);
return GDK_KEYMAP_GET_CLASS(keymap)->map_virtual_modifiers (keymap, state);
}
static GdkModifierType
gdk_keymap_real_get_modifier_mask (GdkKeymap *keymap,
GdkModifierIntent intent)
{
switch (intent)
{
case GDK_MODIFIER_INTENT_PRIMARY_ACCELERATOR:
return GDK_CONTROL_MASK;
case GDK_MODIFIER_INTENT_CONTEXT_MENU:
return 0;
case GDK_MODIFIER_INTENT_EXTEND_SELECTION:
return GDK_SHIFT_MASK;
case GDK_MODIFIER_INTENT_MODIFY_SELECTION:
return GDK_CONTROL_MASK;
case GDK_MODIFIER_INTENT_NO_TEXT_INPUT:
return GDK_MOD1_MASK | GDK_CONTROL_MASK;
default:
g_return_val_if_reached (0);
}
}
/**
* gdk_keymap_get_modifier_mask:
* @keymap: a #GdkKeymap
* @intent: the use case for the modifier mask
*
* Returns the modifier mask the @keymap's windowing system backend
* uses for a particular purpose.
*
* Note that this function always returns real hardware modifiers, not
* virtual ones (e.g. it will return #GDK_MOD1_MASK rather than
* #GDK_META_MASK if the backend maps MOD1 to META), so there are use
* cases where the return value of this function has to be transformed
* by gdk_keymap_add_virtual_modifiers() in order to contain the
* expected result.
*
* Returns: the modifier mask used for @intent.
*
* Since: 3.4
**/
GdkModifierType
gdk_keymap_get_modifier_mask (GdkKeymap *keymap,
GdkModifierIntent intent)
{
g_return_val_if_fail (GDK_IS_KEYMAP (keymap), 0);
return GDK_KEYMAP_GET_CLASS (keymap)->get_modifier_mask (keymap, intent);
}
/**
* gdk_keyval_name:
* @keyval: a key value
*
* Converts a key value into a symbolic name.
*
* The names are the same as those in the
* <filename>&lt;gdk/gdkkeysyms.h&gt;</filename> header file
* but without the leading "GDK_KEY_".
*
* Return value: (transfer none): a string containing the name of the key,
* or %NULL if @keyval is not a valid key. The string should not be
* modified.
*/
gchar *
gdk_keyval_name (guint keyval)
{
GdkDisplayManager *manager = gdk_display_manager_get ();
return GDK_DISPLAY_MANAGER_GET_CLASS (manager)->get_keyval_name (manager,
keyval);
}
/**
* gdk_keyval_from_name:
* @keyval_name: a key name
*
* Converts a key name to a key value.
*
* The names are the same as those in the
* <filename>&lt;gdk/gdkkeysyms.h&gt;</filename> header file
* but without the leading "GDK_KEY_".
*
* Returns: the corresponding key value, or %GDK_KEY_VoidSymbol
* if the key name is not a valid key
*/
guint
gdk_keyval_from_name (const gchar *keyval_name)
{
GdkDisplayManager *manager = gdk_display_manager_get ();
return GDK_DISPLAY_MANAGER_GET_CLASS (manager)->lookup_keyval (manager,
keyval_name);
}
void
_gdk_display_manager_real_keyval_convert_case (GdkDisplayManager *manager,
guint symbol,
guint *lower,
guint *upper)
{
guint xlower = symbol;
guint xupper = symbol;
/* Check for directly encoded 24-bit UCS characters: */
if ((symbol & 0xff000000) == 0x01000000)
{
if (lower)
*lower = gdk_unicode_to_keyval (g_unichar_tolower (symbol & 0x00ffffff));
if (upper)
*upper = gdk_unicode_to_keyval (g_unichar_toupper (symbol & 0x00ffffff));
return;
}
switch (symbol >> 8)
{
case 0: /* Latin 1 */
if ((symbol >= GDK_KEY_A) && (symbol <= GDK_KEY_Z))
xlower += (GDK_KEY_a - GDK_KEY_A);
else if ((symbol >= GDK_KEY_a) && (symbol <= GDK_KEY_z))
xupper -= (GDK_KEY_a - GDK_KEY_A);
else if ((symbol >= GDK_KEY_Agrave) && (symbol <= GDK_KEY_Odiaeresis))
xlower += (GDK_KEY_agrave - GDK_KEY_Agrave);
else if ((symbol >= GDK_KEY_agrave) && (symbol <= GDK_KEY_odiaeresis))
xupper -= (GDK_KEY_agrave - GDK_KEY_Agrave);
else if ((symbol >= GDK_KEY_Ooblique) && (symbol <= GDK_KEY_Thorn))
xlower += (GDK_KEY_oslash - GDK_KEY_Ooblique);
else if ((symbol >= GDK_KEY_oslash) && (symbol <= GDK_KEY_thorn))
xupper -= (GDK_KEY_oslash - GDK_KEY_Ooblique);
break;
case 1: /* Latin 2 */
/* Assume the KeySym is a legal value (ignore discontinuities) */
if (symbol == GDK_KEY_Aogonek)
xlower = GDK_KEY_aogonek;
else if (symbol >= GDK_KEY_Lstroke && symbol <= GDK_KEY_Sacute)
xlower += (GDK_KEY_lstroke - GDK_KEY_Lstroke);
else if (symbol >= GDK_KEY_Scaron && symbol <= GDK_KEY_Zacute)
xlower += (GDK_KEY_scaron - GDK_KEY_Scaron);
else if (symbol >= GDK_KEY_Zcaron && symbol <= GDK_KEY_Zabovedot)
xlower += (GDK_KEY_zcaron - GDK_KEY_Zcaron);
else if (symbol == GDK_KEY_aogonek)
xupper = GDK_KEY_Aogonek;
else if (symbol >= GDK_KEY_lstroke && symbol <= GDK_KEY_sacute)
xupper -= (GDK_KEY_lstroke - GDK_KEY_Lstroke);
else if (symbol >= GDK_KEY_scaron && symbol <= GDK_KEY_zacute)
xupper -= (GDK_KEY_scaron - GDK_KEY_Scaron);
else if (symbol >= GDK_KEY_zcaron && symbol <= GDK_KEY_zabovedot)
xupper -= (GDK_KEY_zcaron - GDK_KEY_Zcaron);
else if (symbol >= GDK_KEY_Racute && symbol <= GDK_KEY_Tcedilla)
xlower += (GDK_KEY_racute - GDK_KEY_Racute);
else if (symbol >= GDK_KEY_racute && symbol <= GDK_KEY_tcedilla)
xupper -= (GDK_KEY_racute - GDK_KEY_Racute);
break;
case 2: /* Latin 3 */
/* Assume the KeySym is a legal value (ignore discontinuities) */
if (symbol >= GDK_KEY_Hstroke && symbol <= GDK_KEY_Hcircumflex)
xlower += (GDK_KEY_hstroke - GDK_KEY_Hstroke);
else if (symbol >= GDK_KEY_Gbreve && symbol <= GDK_KEY_Jcircumflex)
xlower += (GDK_KEY_gbreve - GDK_KEY_Gbreve);
else if (symbol >= GDK_KEY_hstroke && symbol <= GDK_KEY_hcircumflex)
xupper -= (GDK_KEY_hstroke - GDK_KEY_Hstroke);
else if (symbol >= GDK_KEY_gbreve && symbol <= GDK_KEY_jcircumflex)
xupper -= (GDK_KEY_gbreve - GDK_KEY_Gbreve);
else if (symbol >= GDK_KEY_Cabovedot && symbol <= GDK_KEY_Scircumflex)
xlower += (GDK_KEY_cabovedot - GDK_KEY_Cabovedot);
else if (symbol >= GDK_KEY_cabovedot && symbol <= GDK_KEY_scircumflex)
xupper -= (GDK_KEY_cabovedot - GDK_KEY_Cabovedot);
break;
case 3: /* Latin 4 */
/* Assume the KeySym is a legal value (ignore discontinuities) */
if (symbol >= GDK_KEY_Rcedilla && symbol <= GDK_KEY_Tslash)
xlower += (GDK_KEY_rcedilla - GDK_KEY_Rcedilla);
else if (symbol >= GDK_KEY_rcedilla && symbol <= GDK_KEY_tslash)
xupper -= (GDK_KEY_rcedilla - GDK_KEY_Rcedilla);
else if (symbol == GDK_KEY_ENG)
xlower = GDK_KEY_eng;
else if (symbol == GDK_KEY_eng)
xupper = GDK_KEY_ENG;
else if (symbol >= GDK_KEY_Amacron && symbol <= GDK_KEY_Umacron)
xlower += (GDK_KEY_amacron - GDK_KEY_Amacron);
else if (symbol >= GDK_KEY_amacron && symbol <= GDK_KEY_umacron)
xupper -= (GDK_KEY_amacron - GDK_KEY_Amacron);
break;
case 6: /* Cyrillic */
/* Assume the KeySym is a legal value (ignore discontinuities) */
if (symbol >= GDK_KEY_Serbian_DJE && symbol <= GDK_KEY_Serbian_DZE)
xlower -= (GDK_KEY_Serbian_DJE - GDK_KEY_Serbian_dje);
else if (symbol >= GDK_KEY_Serbian_dje && symbol <= GDK_KEY_Serbian_dze)
xupper += (GDK_KEY_Serbian_DJE - GDK_KEY_Serbian_dje);
else if (symbol >= GDK_KEY_Cyrillic_YU && symbol <= GDK_KEY_Cyrillic_HARDSIGN)
xlower -= (GDK_KEY_Cyrillic_YU - GDK_KEY_Cyrillic_yu);
else if (symbol >= GDK_KEY_Cyrillic_yu && symbol <= GDK_KEY_Cyrillic_hardsign)
xupper += (GDK_KEY_Cyrillic_YU - GDK_KEY_Cyrillic_yu);
break;
case 7: /* Greek */
/* Assume the KeySym is a legal value (ignore discontinuities) */
if (symbol >= GDK_KEY_Greek_ALPHAaccent && symbol <= GDK_KEY_Greek_OMEGAaccent)
xlower += (GDK_KEY_Greek_alphaaccent - GDK_KEY_Greek_ALPHAaccent);
else if (symbol >= GDK_KEY_Greek_alphaaccent && symbol <= GDK_KEY_Greek_omegaaccent &&
symbol != GDK_KEY_Greek_iotaaccentdieresis &&
symbol != GDK_KEY_Greek_upsilonaccentdieresis)
xupper -= (GDK_KEY_Greek_alphaaccent - GDK_KEY_Greek_ALPHAaccent);
else if (symbol >= GDK_KEY_Greek_ALPHA && symbol <= GDK_KEY_Greek_OMEGA)
xlower += (GDK_KEY_Greek_alpha - GDK_KEY_Greek_ALPHA);
else if (symbol >= GDK_KEY_Greek_alpha && symbol <= GDK_KEY_Greek_omega &&
symbol != GDK_KEY_Greek_finalsmallsigma)
xupper -= (GDK_KEY_Greek_alpha - GDK_KEY_Greek_ALPHA);
break;
}
if (lower)
*lower = xlower;
if (upper)
*upper = xupper;
}
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