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GdkKeymap * | gdk_keymap_get_default () |
GdkKeymap * | gdk_keymap_get_for_display () |
guint | gdk_keymap_lookup_key () |
gboolean | gdk_keymap_translate_keyboard_state () |
gboolean | gdk_keymap_get_entries_for_keyval () |
gboolean | gdk_keymap_get_entries_for_keycode () |
PangoDirection | gdk_keymap_get_direction () |
gboolean | gdk_keymap_have_bidi_layouts () |
gboolean | gdk_keymap_get_caps_lock_state () |
void | gdk_keymap_add_virtual_modifiers () |
gboolean | gdk_keymap_map_virtual_modifiers () |
gchar * | gdk_keyval_name () |
guint | gdk_keyval_from_name () |
void | gdk_keyval_convert_case () |
guint | gdk_keyval_to_upper () |
guint | gdk_keyval_to_lower () |
gboolean | gdk_keyval_is_upper () |
gboolean | gdk_keyval_is_lower () |
guint32 | gdk_keyval_to_unicode () |
guint | gdk_unicode_to_keyval () |
GdkKeymap *
gdk_keymap_get_default (void
);
Returns the GdkKeymap attached to the default display.
GdkKeymap *
gdk_keymap_get_for_display (GdkDisplay *display
);
Returns the GdkKeymap attached to display
.
Since: 2.2
guint gdk_keymap_lookup_key (GdkKeymap *keymap
,const GdkKeymapKey *key
);
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.
Note that passing NULL
for keymap
is deprecated and will stop
to work in GTK+ 3.0. Use gdk_keymap_get_for_display()
instead.
keymap |
a GdkKeymap or |
|
key |
a GdkKeymapKey with keycode, group, and level initialized |
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
);
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 ??? 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.
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 plus
symbol is shifted, so when comparing a key press to a
<Control>plus
accelerator <Shift> should
be masked out.
1 2 3 4 5 6 7 8 |
/* We want to ignore irrelevant modifiers like ScrollLock */ #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, &keyval, NULL, NULL, &consumed); if (keyval == GDK_PLUS && (event->state & ~consumed & ALL_ACCELS_MASK) == GDK_CONTROL_MASK) /* Control was pressed */ |
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:
1 2 3 4 |
/* XXX Don't do this XXX */ if (keyval == accel_keyval && (event->state & ~consumed & ALL_ACCELS_MASK) == (accel_mods & ~consumed)) /* Accelerator was pressed */ |
However, this did not work if multi-modifier combinations were
used in the keymap, since, for instance, <Control>
would be masked out even if only <Control><Alt>
was used in the keymap. To support this usage as well as well as
possible, all single modifier 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 <Control>plus
,
not <Control><Shift>plus
,
Note that passing NULL
for keymap
is deprecated and will stop
to work in GTK+ 3.0. Use gdk_keymap_get_for_display()
instead.
keymap |
a GdkKeymap, or |
[allow-none] |
hardware_keycode |
a keycode |
|
state |
a modifier state |
|
group |
active keyboard group |
|
keyval |
return location for keyval, or |
[out][allow-none] |
effective_group |
return location for effective group, or |
[out][allow-none] |
level |
return location for level, or |
[out][allow-none] |
consumed_modifiers |
return location for modifiers that were used to
determine the group or level, or |
[out][allow-none] |
gboolean gdk_keymap_get_entries_for_keyval (GdkKeymap *keymap
,guint keyval
,GdkKeymapKey **keys
,gint *n_keys
);
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()
.
Note that passing NULL
for keymap
is deprecated and will stop
to work in GTK+ 3.0. Use gdk_keymap_get_for_display()
instead.
keymap |
a GdkKeymap, or |
[allow-none] |
keyval |
a keyval, such as |
|
keys |
return location for an array of GdkKeymapKey. |
[out] |
n_keys |
return location for number of elements in returned array. |
[out] |
gboolean gdk_keymap_get_entries_for_keycode (GdkKeymap *keymap
,guint hardware_keycode
,GdkKeymapKey **keys
,guint **keyvals
,gint *n_entries
);
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()
.
Note that passing NULL
for keymap
is deprecated and will stop
to work in GTK+ 3.0. Use gdk_keymap_get_for_display()
instead.
keymap |
a GdkKeymap or |
[allow-none] |
hardware_keycode |
a keycode |
|
keys |
return location for array of GdkKeymapKey, or |
[out] |
keyvals |
return location for array of keyvals, or |
[out] |
n_entries |
length of |
PangoDirection
gdk_keymap_get_direction (GdkKeymap *keymap
);
Returns the direction of effective layout of the keymap.
Note that passing NULL
for keymap
is deprecated and will stop
to work in GTK+ 3.0. Use gdk_keymap_get_for_display()
instead.
PANGO_DIRECTION_LTR
or PANGO_DIRECTION_RTL
if it can determine the direction. PANGO_DIRECTION_NEUTRAL
otherwise.
gboolean
gdk_keymap_have_bidi_layouts (GdkKeymap *keymap
);
Determines if keyboard layouts for both right-to-left and left-to-right languages are in use.
Note that passing NULL
for keymap
is deprecated and will stop
to work in GTK+ 3.0. Use gdk_keymap_get_for_display()
instead.
Since: 2.12
gboolean
gdk_keymap_get_caps_lock_state (GdkKeymap *keymap
);
Returns whether the Caps Lock modifer is locked.
Since: 2.16
void gdk_keymap_add_virtual_modifiers (GdkKeymap *keymap
,GdkModifierType *state
);
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
gboolean gdk_keymap_map_virtual_modifiers (GdkKeymap *keymap
,GdkModifierType *state
);
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.
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
gchar *
gdk_keyval_name (guint keyval
);
Converts a key value into a symbolic name.
The names are the same as those in the
<gdk/gdkkeysyms.h>
header file
but without the leading "GDK_KEY_".
guint
gdk_keyval_from_name (const gchar *keyval_name
);
Converts a key name to a key value.
The names are the same as those in the
<gdk/gdkkeysyms.h>
header file
but without the leading "GDK_KEY_".
void gdk_keyval_convert_case (guint symbol
,guint *lower
,guint *upper
);
Obtains the upper- and lower-case versions of the keyval symbol
.
Examples of keyvals are GDK_a, GDK_Enter, GDK_F1, etc.
guint32
gdk_keyval_to_unicode (guint keyval
);
Convert from a GDK key symbol to the corresponding ISO10646 (Unicode) character.
“direction-changed”
signalvoid user_function (GdkKeymap *keymap, gpointer user_data)
The ::direction-changed signal gets emitted when the direction of the keymap changes.
keymap |
the object on which the signal is emitted |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run Last
Since: 2.0
“keys-changed”
signalvoid user_function (GdkKeymap *keymap, gpointer user_data)
The ::keys-changed signal is emitted when the mapping represented by
keymap
changes.
keymap |
the object on which the signal is emitted |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run Last
Since: 2.2
“state-changed”
signalvoid user_function (GdkKeymap *keymap, gpointer user_data)
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()
.
keymap |
the object on which the signal is emitted |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run Last
Since: 2.16