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Learning_GTK4_tree/gtk/gtkaccelgroup.c

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2023-12-12 11:36:42 +01:00
/* GTK - The GIMP Toolkit
* Copyright (C) 1998, 2001 Tim Janik
*
* 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 <string.h>
#include <stdlib.h>
#include "gtkaccelgroup.h"
#include "gtkaccelgroupprivate.h"
#include <glib/gi18n-lib.h>
#include "gtkmarshalers.h"
#include "gtkprivate.h"
/* --- functions --- */
/**
* gtk_accelerator_valid:
* @keyval: a GDK keyval
* @modifiers: modifier mask
*
* Determines whether a given keyval and modifier mask constitute
* a valid keyboard accelerator.
*
* For example, the %GDK_KEY_a keyval plus %GDK_CONTROL_MASK mark is valid,
* and matches the “Ctrl+a” accelerator. But, you can't, for instance, use
* the %GDK_KEY_Control_L keyval as an accelerator.
*
* Returns: %TRUE if the accelerator is valid
*/
gboolean
gtk_accelerator_valid (guint keyval,
GdkModifierType modifiers)
{
static const guint invalid_accelerator_vals[] = {
GDK_KEY_Shift_L, GDK_KEY_Shift_R, GDK_KEY_Shift_Lock,
GDK_KEY_Caps_Lock, GDK_KEY_ISO_Lock, GDK_KEY_Control_L,
GDK_KEY_Control_R, GDK_KEY_Meta_L, GDK_KEY_Meta_R,
GDK_KEY_Alt_L, GDK_KEY_Alt_R, GDK_KEY_Super_L, GDK_KEY_Super_R,
GDK_KEY_Hyper_L, GDK_KEY_Hyper_R, GDK_KEY_ISO_Level3_Shift,
GDK_KEY_ISO_Next_Group, GDK_KEY_ISO_Prev_Group,
GDK_KEY_ISO_First_Group, GDK_KEY_ISO_Last_Group,
GDK_KEY_Mode_switch, GDK_KEY_Num_Lock, GDK_KEY_Multi_key,
GDK_KEY_Scroll_Lock, GDK_KEY_Sys_Req,
GDK_KEY_Tab, GDK_KEY_ISO_Left_Tab, GDK_KEY_KP_Tab,
GDK_KEY_First_Virtual_Screen, GDK_KEY_Prev_Virtual_Screen,
GDK_KEY_Next_Virtual_Screen, GDK_KEY_Last_Virtual_Screen,
GDK_KEY_Terminate_Server, GDK_KEY_AudibleBell_Enable,
0
};
static const guint invalid_unmodified_vals[] = {
GDK_KEY_Up, GDK_KEY_Down, GDK_KEY_Left, GDK_KEY_Right,
GDK_KEY_KP_Up, GDK_KEY_KP_Down, GDK_KEY_KP_Left, GDK_KEY_KP_Right,
0
};
const guint *ac_val;
modifiers &= GDK_MODIFIER_MASK;
if (keyval <= 0xFF)
return keyval >= 0x20;
ac_val = invalid_accelerator_vals;
while (*ac_val)
{
if (keyval == *ac_val++)
return FALSE;
}
if (!modifiers)
{
ac_val = invalid_unmodified_vals;
while (*ac_val)
{
if (keyval == *ac_val++)
return FALSE;
}
}
return TRUE;
}
static inline gboolean
is_alt (const char *string)
{
return ((string[0] == '<') &&
(string[1] == 'a' || string[1] == 'A') &&
(string[2] == 'l' || string[2] == 'L') &&
(string[3] == 't' || string[3] == 'T') &&
(string[4] == '>'));
}
static inline gboolean
is_ctl (const char *string)
{
return ((string[0] == '<') &&
(string[1] == 'c' || string[1] == 'C') &&
(string[2] == 't' || string[2] == 'T') &&
(string[3] == 'l' || string[3] == 'L') &&
(string[4] == '>'));
}
static inline gboolean
is_ctrl (const char *string)
{
return ((string[0] == '<') &&
(string[1] == 'c' || string[1] == 'C') &&
(string[2] == 't' || string[2] == 'T') &&
(string[3] == 'r' || string[3] == 'R') &&
(string[4] == 'l' || string[4] == 'L') &&
(string[5] == '>'));
}
static inline gboolean
is_shft (const char *string)
{
return ((string[0] == '<') &&
(string[1] == 's' || string[1] == 'S') &&
(string[2] == 'h' || string[2] == 'H') &&
(string[3] == 'f' || string[3] == 'F') &&
(string[4] == 't' || string[4] == 'T') &&
(string[5] == '>'));
}
static inline gboolean
is_shift (const char *string)
{
return ((string[0] == '<') &&
(string[1] == 's' || string[1] == 'S') &&
(string[2] == 'h' || string[2] == 'H') &&
(string[3] == 'i' || string[3] == 'I') &&
(string[4] == 'f' || string[4] == 'F') &&
(string[5] == 't' || string[5] == 'T') &&
(string[6] == '>'));
}
static inline gboolean
is_control (const char *string)
{
return ((string[0] == '<') &&
(string[1] == 'c' || string[1] == 'C') &&
(string[2] == 'o' || string[2] == 'O') &&
(string[3] == 'n' || string[3] == 'N') &&
(string[4] == 't' || string[4] == 'T') &&
(string[5] == 'r' || string[5] == 'R') &&
(string[6] == 'o' || string[6] == 'O') &&
(string[7] == 'l' || string[7] == 'L') &&
(string[8] == '>'));
}
static inline gboolean
is_meta (const char *string)
{
return ((string[0] == '<') &&
(string[1] == 'm' || string[1] == 'M') &&
(string[2] == 'e' || string[2] == 'E') &&
(string[3] == 't' || string[3] == 'T') &&
(string[4] == 'a' || string[4] == 'A') &&
(string[5] == '>'));
}
static inline gboolean
is_super (const char *string)
{
return ((string[0] == '<') &&
(string[1] == 's' || string[1] == 'S') &&
(string[2] == 'u' || string[2] == 'U') &&
(string[3] == 'p' || string[3] == 'P') &&
(string[4] == 'e' || string[4] == 'E') &&
(string[5] == 'r' || string[5] == 'R') &&
(string[6] == '>'));
}
static inline gboolean
is_hyper (const char *string)
{
return ((string[0] == '<') &&
(string[1] == 'h' || string[1] == 'H') &&
(string[2] == 'y' || string[2] == 'Y') &&
(string[3] == 'p' || string[3] == 'P') &&
(string[4] == 'e' || string[4] == 'E') &&
(string[5] == 'r' || string[5] == 'R') &&
(string[6] == '>'));
}
static inline gboolean
is_primary (const char *string)
{
return ((string[0] == '<') &&
(string[1] == 'p' || string[1] == 'P') &&
(string[2] == 'r' || string[2] == 'R') &&
(string[3] == 'i' || string[3] == 'I') &&
(string[4] == 'm' || string[4] == 'M') &&
(string[5] == 'a' || string[5] == 'A') &&
(string[6] == 'r' || string[6] == 'R') &&
(string[7] == 'y' || string[7] == 'Y') &&
(string[8] == '>'));
}
static inline gboolean
is_keycode (const char *string)
{
return (string[0] == '0' &&
string[1] == 'x' &&
g_ascii_isxdigit (string[2]) &&
g_ascii_isxdigit (string[3]));
}
/**
* gtk_accelerator_parse_with_keycode:
* @accelerator: string representing an accelerator
* @display: (nullable): the `GdkDisplay` to look up @accelerator_codes in
* @accelerator_key: (out) (optional): return location for accelerator keyval
* @accelerator_codes: (out) (array zero-terminated=1) (transfer full) (optional):
* return location for accelerator keycodes
* @accelerator_mods: (out) (optional): return location for accelerator
* modifier mask
*
* Parses a string representing an accelerator.
*
* This is similar to [func@Gtk.accelerator_parse] but handles keycodes as
* well. This is only useful for system-level components, applications should
* use [func@Gtk.accelerator_parse] instead.
*
* If @accelerator_codes is given and the result stored in it is non-%NULL,
* the result must be freed with g_free().
*
* If a keycode is present in the accelerator and no @accelerator_codes
* is given, the parse will fail.
*
* If the parse fails, @accelerator_key, @accelerator_mods and
* @accelerator_codes will be set to 0 (zero).
*
* Returns: %TRUE if parsing succeeded
*/
gboolean
gtk_accelerator_parse_with_keycode (const char *accelerator,
GdkDisplay *display,
guint *accelerator_key,
guint **accelerator_codes,
GdkModifierType *accelerator_mods)
{
guint keyval;
GdkModifierType mods;
int len;
gboolean error;
if (accelerator_key)
*accelerator_key = 0;
if (accelerator_mods)
*accelerator_mods = 0;
if (accelerator_codes)
*accelerator_codes = NULL;
g_return_val_if_fail (accelerator != NULL, FALSE);
if (!display)
display = gdk_display_get_default ();
error = FALSE;
keyval = 0;
mods = 0;
len = strlen (accelerator);
while (len)
{
if (*accelerator == '<')
{
if (len >= 9 && is_primary (accelerator))
{
accelerator += 9;
len -= 9;
mods |= GDK_CONTROL_MASK;
}
else if (len >= 9 && is_control (accelerator))
{
accelerator += 9;
len -= 9;
mods |= GDK_CONTROL_MASK;
}
else if (len >= 7 && is_shift (accelerator))
{
accelerator += 7;
len -= 7;
mods |= GDK_SHIFT_MASK;
}
else if (len >= 6 && is_shft (accelerator))
{
accelerator += 6;
len -= 6;
mods |= GDK_SHIFT_MASK;
}
else if (len >= 6 && is_ctrl (accelerator))
{
accelerator += 6;
len -= 6;
mods |= GDK_CONTROL_MASK;
}
else if (len >= 5 && is_ctl (accelerator))
{
accelerator += 5;
len -= 5;
mods |= GDK_CONTROL_MASK;
}
else if (len >= 5 && is_alt (accelerator))
{
accelerator += 5;
len -= 5;
mods |= GDK_ALT_MASK;
}
else if (len >= 6 && is_meta (accelerator))
{
accelerator += 6;
len -= 6;
mods |= GDK_META_MASK;
}
else if (len >= 7 && is_hyper (accelerator))
{
accelerator += 7;
len -= 7;
mods |= GDK_HYPER_MASK;
}
else if (len >= 7 && is_super (accelerator))
{
accelerator += 7;
len -= 7;
mods |= GDK_SUPER_MASK;
}
else
{
char last_ch;
last_ch = *accelerator;
while (last_ch && last_ch != '>')
{
accelerator += 1;
len -= 1;
last_ch = *accelerator;
}
}
}
else
{
if (len >= 4 && is_keycode (accelerator))
{
char keystring[5];
char *endptr;
int tmp_keycode;
memcpy (keystring, accelerator, 4);
keystring [4] = '\000';
tmp_keycode = strtol (keystring, &endptr, 16);
if (endptr == NULL || *endptr != '\000')
{
error = TRUE;
goto out;
}
else if (accelerator_codes != NULL)
{
/* 0x00 is an invalid keycode too. */
if (tmp_keycode == 0)
{
error = TRUE;
goto out;
}
else
{
*accelerator_codes = g_new0 (guint, 2);
(*accelerator_codes)[0] = tmp_keycode;
}
}
else
{
/* There was a keycode in the string, but
* we cannot store it, so we have an error */
error = TRUE;
goto out;
}
}
else
{
keyval = gdk_keyval_from_name (accelerator);
if (keyval == GDK_KEY_VoidSymbol)
{
error = TRUE;
goto out;
}
}
if (keyval && accelerator_codes != NULL)
{
GdkKeymapKey *keys;
int n_keys, i, j;
if (!gdk_display_map_keyval (display, keyval, &keys, &n_keys))
{
/* Not in keymap */
error = TRUE;
goto out;
}
else
{
*accelerator_codes = g_new0 (guint, n_keys + 1);
/* Prefer level-0 group-0 keys to modified keys */
for (i = 0, j = 0; i < n_keys; ++i)
{
if (keys[i].level == 0 && keys[i].group == 0)
(*accelerator_codes)[j++] = keys[i].keycode;
}
/* No level-0 group-0 keys? Find in the whole group-0 */
if (j == 0)
{
for (i = 0, j = 0; i < n_keys; ++i)
{
if (keys[i].group == 0)
(*accelerator_codes)[j++] = keys[i].keycode;
}
}
/* Still nothing? Try in other groups */
if (j == 0)
{
for (i = 0, j = 0; i < n_keys; ++i)
(*accelerator_codes)[j++] = keys[i].keycode;
}
if (j == 0)
{
g_free (*accelerator_codes);
*accelerator_codes = NULL;
/* Not in keymap */
error = TRUE;
goto out;
}
g_free (keys);
}
}
accelerator += len;
len -= len;
}
}
out:
if (error)
keyval = mods = 0;
if (accelerator_key)
*accelerator_key = gdk_keyval_to_lower (keyval);
if (accelerator_mods)
*accelerator_mods = mods;
return !error;
}
/**
* gtk_accelerator_parse:
* @accelerator: string representing an accelerator
* @accelerator_key: (out) (optional): return location for accelerator keyval
* @accelerator_mods: (out) (optional): return location for accelerator
* modifier mask
*
* Parses a string representing an accelerator.
*
* The format looks like “`<Control>a`” or “`<Shift><Alt>F1`”.
*
* The parser is fairly liberal and allows lower or upper case, and also
* abbreviations such as “`<Ctl>`” and “`<Ctrl>`”.
*
* Key names are parsed using [func@Gdk.keyval_from_name]. For character keys
* the name is not the symbol, but the lowercase name, e.g. one would use
* “`<Ctrl>minus`” instead of “`<Ctrl>-`”.
*
* Modifiers are enclosed in angular brackets `<>`, and match the
* [flags@Gdk.ModifierType] mask:
*
* - `<Shift>` for `GDK_SHIFT_MASK`
* - `<Ctrl>` for `GDK_CONTROL_MASK`
* - `<Alt>` for `GDK_ALT_MASK`
* - `<Meta>` for `GDK_META_MASK`
* - `<Super>` for `GDK_SUPER_MASK`
* - `<Hyper>` for `GDK_HYPER_MASK`
*
* If the parse operation fails, @accelerator_key and @accelerator_mods will
* be set to 0 (zero).
*/
gboolean
gtk_accelerator_parse (const char *accelerator,
guint *accelerator_key,
GdkModifierType *accelerator_mods)
{
return gtk_accelerator_parse_with_keycode (accelerator, NULL, accelerator_key, NULL, accelerator_mods);
}
/**
* gtk_accelerator_name_with_keycode:
* @display: (nullable): a `GdkDisplay` or %NULL to use the default display
* @accelerator_key: accelerator keyval
* @keycode: accelerator keycode
* @accelerator_mods: accelerator modifier mask
*
* Converts an accelerator keyval and modifier mask
* into a string parseable by gtk_accelerator_parse_with_keycode().
*
* This is similar to [func@Gtk.accelerator_name] but handling keycodes.
* This is only useful for system-level components, applications
* should use [func@Gtk.accelerator_name] instead.
*
* Returns: a newly allocated accelerator name.
*/
char *
gtk_accelerator_name_with_keycode (GdkDisplay *display,
guint accelerator_key,
guint keycode,
GdkModifierType accelerator_mods)
{
char *gtk_name;
gtk_name = gtk_accelerator_name (accelerator_key, accelerator_mods);
if (!accelerator_key)
{
char *name;
name = g_strdup_printf ("%s0x%02x", gtk_name, keycode);
g_free (gtk_name);
return name;
}
return gtk_name;
}
/**
* gtk_accelerator_name:
* @accelerator_key: accelerator keyval
* @accelerator_mods: accelerator modifier mask
*
* Converts an accelerator keyval and modifier mask into a string
* parseable by gtk_accelerator_parse().
*
* For example, if you pass in %GDK_KEY_q and %GDK_CONTROL_MASK,
* this function returns `<Control>q`.
*
* If you need to display accelerators in the user interface,
* see [func@Gtk.accelerator_get_label].
*
* Returns: (transfer full): a newly-allocated accelerator name
*/
char *
gtk_accelerator_name (guint accelerator_key,
GdkModifierType accelerator_mods)
{
#define TXTLEN(s) sizeof (s) - 1
static const struct {
guint mask;
const char *text;
gsize text_len;
} mask_text[] = {
{ GDK_SHIFT_MASK, "<Shift>", TXTLEN ("<Shift>") },
{ GDK_CONTROL_MASK, "<Control>", TXTLEN ("<Control>") },
{ GDK_ALT_MASK, "<Alt>", TXTLEN ("<Alt>") },
{ GDK_META_MASK, "<Meta>", TXTLEN ("<Meta>") },
{ GDK_SUPER_MASK, "<Super>", TXTLEN ("<Super>") },
{ GDK_HYPER_MASK, "<Hyper>", TXTLEN ("<Hyper>") }
};
#undef TXTLEN
GdkModifierType saved_mods;
guint l;
guint name_len;
const char *keyval_name;
char *accelerator;
int i;
accelerator_mods &= GDK_MODIFIER_MASK;
keyval_name = gdk_keyval_name (gdk_keyval_to_lower (accelerator_key));
if (!keyval_name)
keyval_name = "";
name_len = strlen (keyval_name);
saved_mods = accelerator_mods;
for (i = 0; i < G_N_ELEMENTS (mask_text); i++)
{
if (accelerator_mods & mask_text[i].mask)
name_len += mask_text[i].text_len;
}
if (name_len == 0)
return g_strdup (keyval_name);
name_len += 1; /* NUL byte */
accelerator = g_new (char, name_len);
accelerator_mods = saved_mods;
l = 0;
for (i = 0; i < G_N_ELEMENTS (mask_text); i++)
{
if (accelerator_mods & mask_text[i].mask)
{
strcpy (accelerator + l, mask_text[i].text);
l += mask_text[i].text_len;
}
}
strcpy (accelerator + l, keyval_name);
accelerator[name_len - 1] = '\0';
return accelerator;
}
/**
* gtk_accelerator_get_label_with_keycode:
* @display: (nullable): a `GdkDisplay` or %NULL to use the default display
* @accelerator_key: accelerator keyval
* @keycode: accelerator keycode
* @accelerator_mods: accelerator modifier mask
*
* Converts an accelerator keyval and modifier mask
* into a string that can be displayed to the user.
*
* The string may be translated.
*
* This function is similar to [func@Gtk.accelerator_get_label],
* but handling keycodes. This is only useful for system-level
* components, applications should use [func@Gtk.accelerator_get_label]
* instead.
*
* Returns: (transfer full): a newly-allocated string representing the accelerator
*/
char *
gtk_accelerator_get_label_with_keycode (GdkDisplay *display,
guint accelerator_key,
guint keycode,
GdkModifierType accelerator_mods)
{
char *gtk_label;
gtk_label = gtk_accelerator_get_label (accelerator_key, accelerator_mods);
if (!accelerator_key)
{
char *label;
label = g_strdup_printf ("%s0x%02x", gtk_label, keycode);
g_free (gtk_label);
return label;
}
return gtk_label;
}
/* Underscores in key names are better displayed as spaces
* E.g., Page_Up should be “Page Up”.
*
* Some keynames also have prefixes that are not suitable
* for display, e.g XF86AudioMute, so strip those out, too.
*
* This function is only called on untranslated keynames,
* so no need to be UTF-8 safe.
*/
static void
append_without_underscores (GString *s,
const char *str)
{
const char *p;
if (g_str_has_prefix (str, "XF86"))
p = str + 4;
else if (g_str_has_prefix (str, "ISO_"))
p = str + 4;
else
p = str;
for ( ; *p; p++)
{
if (*p == '_')
g_string_append_c (s, ' ');
else
g_string_append_c (s, *p);
}
}
/* On Mac, if the key has symbolic representation (e.g. arrow keys),
* append it to gstring and return TRUE; otherwise return FALSE.
* See http://docs.info.apple.com/article.html?path=Mac/10.5/en/cdb_symbs.html
* for the list of special keys. */
static gboolean
append_keyval_symbol (guint accelerator_key,
GString *gstring)
{
#ifdef GDK_WINDOWING_MACOS
switch (accelerator_key)
{
case GDK_KEY_Return:
/* U+21A9 LEFTWARDS ARROW WITH HOOK */
g_string_append (gstring, "\xe2\x86\xa9");
return TRUE;
case GDK_KEY_ISO_Enter:
/* U+2324 UP ARROWHEAD BETWEEN TWO HORIZONTAL BARS */
g_string_append (gstring, "\xe2\x8c\xa4");
return TRUE;
case GDK_KEY_Left:
/* U+2190 LEFTWARDS ARROW */
g_string_append (gstring, "\xe2\x86\x90");
return TRUE;
case GDK_KEY_Up:
/* U+2191 UPWARDS ARROW */
g_string_append (gstring, "\xe2\x86\x91");
return TRUE;
case GDK_KEY_Right:
/* U+2192 RIGHTWARDS ARROW */
g_string_append (gstring, "\xe2\x86\x92");
return TRUE;
case GDK_KEY_Down:
/* U+2193 DOWNWARDS ARROW */
g_string_append (gstring, "\xe2\x86\x93");
return TRUE;
case GDK_KEY_Page_Up:
/* U+21DE UPWARDS ARROW WITH DOUBLE STROKE */
g_string_append (gstring, "\xe2\x87\x9e");
return TRUE;
case GDK_KEY_Page_Down:
/* U+21DF DOWNWARDS ARROW WITH DOUBLE STROKE */
g_string_append (gstring, "\xe2\x87\x9f");
return TRUE;
case GDK_KEY_Home:
/* U+2196 NORTH WEST ARROW */
g_string_append (gstring, "\xe2\x86\x96");
return TRUE;
case GDK_KEY_End:
/* U+2198 SOUTH EAST ARROW */
g_string_append (gstring, "\xe2\x86\x98");
return TRUE;
case GDK_KEY_Escape:
/* U+238B BROKEN CIRCLE WITH NORTHWEST ARROW */
g_string_append (gstring, "\xe2\x8e\x8b");
return TRUE;
case GDK_KEY_BackSpace:
/* U+232B ERASE TO THE LEFT */
g_string_append (gstring, "\xe2\x8c\xab");
return TRUE;
case GDK_KEY_Delete:
/* U+2326 ERASE TO THE RIGHT */
g_string_append (gstring, "\xe2\x8c\xa6");
return TRUE;
default:
return FALSE;
}
#else /* !GDK_WINDOWING_MACOS */
return FALSE;
#endif
}
static void
append_separator (GString *string)
{
#ifndef GDK_WINDOWING_MACOS
g_string_append (string, "+");
#else
/* no separator on quartz */
#endif
}
/**
* gtk_accelerator_get_label:
* @accelerator_key: accelerator keyval
* @accelerator_mods: accelerator modifier mask
*
* Converts an accelerator keyval and modifier mask into a string
* which can be used to represent the accelerator to the user.
*
* Returns: (transfer full): a newly-allocated string representing the accelerator
*/
char *
gtk_accelerator_get_label (guint accelerator_key,
GdkModifierType accelerator_mods)
{
GString *gstring;
gstring = g_string_new (NULL);
gtk_accelerator_print_label (gstring, accelerator_key, accelerator_mods);
return g_string_free (gstring, FALSE);
}
void
gtk_accelerator_print_label (GString *gstring,
guint accelerator_key,
GdkModifierType accelerator_mods)
{
gboolean seen_mod = FALSE;
gunichar ch;
if (accelerator_mods & GDK_SHIFT_MASK)
{
#ifndef GDK_WINDOWING_MACOS
/* This is the text that should appear next to menu accelerators
* that use the shift key. If the text on this key isn't typically
* translated on keyboards used for your language, don't translate
* this.
*/
g_string_append (gstring, C_("keyboard label", "Shift"));
#else
/* U+21E7 UPWARDS WHITE ARROW */
g_string_append (gstring, "⇧");
#endif
seen_mod = TRUE;
}
if (accelerator_mods & GDK_CONTROL_MASK)
{
if (seen_mod)
append_separator (gstring);
#ifndef GDK_WINDOWING_MACOS
/* This is the text that should appear next to menu accelerators
* that use the control key. If the text on this key isn't typically
* translated on keyboards used for your language, don't translate
* this.
*/
g_string_append (gstring, C_("keyboard label", "Ctrl"));
#else
/* U+2303 UP ARROWHEAD */
g_string_append (gstring, "⌃");
#endif
seen_mod = TRUE;
}
if (accelerator_mods & GDK_ALT_MASK)
{
if (seen_mod)
append_separator (gstring);
#ifndef GDK_WINDOWING_MACOS
/* This is the text that should appear next to menu accelerators
* that use the alt key. If the text on this key isn't typically
* translated on keyboards used for your language, don't translate
* this.
*/
g_string_append (gstring, C_("keyboard label", "Alt"));
#else
/* U+2325 OPTION KEY */
g_string_append (gstring, "⌥");
#endif
seen_mod = TRUE;
}
if (accelerator_mods & GDK_SUPER_MASK)
{
if (seen_mod)
append_separator (gstring);
/* This is the text that should appear next to menu accelerators
* that use the super key. If the text on this key isn't typically
* translated on keyboards used for your language, don't translate
* this.
*/
g_string_append (gstring, C_("keyboard label", "Super"));
seen_mod = TRUE;
}
if (accelerator_mods & GDK_HYPER_MASK)
{
if (seen_mod)
append_separator (gstring);
/* This is the text that should appear next to menu accelerators
* that use the hyper key. If the text on this key isn't typically
* translated on keyboards used for your language, don't translate
* this.
*/
g_string_append (gstring, C_("keyboard label", "Hyper"));
seen_mod = TRUE;
}
if (accelerator_mods & GDK_META_MASK)
{
if (seen_mod)
append_separator (gstring);
#ifndef GDK_WINDOWING_MACOS
/* This is the text that should appear next to menu accelerators
* that use the meta key. If the text on this key isn't typically
* translated on keyboards used for your language, don't translate
* this.
*/
g_string_append (gstring, C_("keyboard label", "Meta"));
#else
g_string_append (gstring, "⌘");
#endif
seen_mod = TRUE;
}
ch = gdk_keyval_to_unicode (accelerator_key);
if (ch && (ch == ' ' || g_unichar_isgraph (ch)))
{
if (seen_mod)
append_separator (gstring);
if (accelerator_key >= GDK_KEY_KP_Space &&
accelerator_key <= GDK_KEY_KP_Equal)
{
/* Translators: "KP" means "numeric key pad". This string will
* be used in accelerators such as "Ctrl+Shift+KP 1" in menus,
* and therefore the translation needs to be very short.
*/
g_string_append (gstring, C_("keyboard label", "KP"));
g_string_append (gstring, " ");
}
switch (ch)
{
case ' ':
g_string_append (gstring, C_("keyboard label", "Space"));
break;
case '\\':
g_string_append (gstring, C_("keyboard label", "Backslash"));
break;
default:
g_string_append_unichar (gstring, g_unichar_toupper (ch));
break;
}
}
else if (!append_keyval_symbol (accelerator_key, gstring))
{
const char *tmp;
tmp = gdk_keyval_name (gdk_keyval_to_lower (accelerator_key));
if (tmp != NULL)
{
if (seen_mod)
append_separator (gstring);
if (tmp[0] != 0 && tmp[1] == 0)
g_string_append_c (gstring, g_ascii_toupper (tmp[0]));
else
{
const char *str;
str = g_dpgettext2 (GETTEXT_PACKAGE, "keyboard label", tmp);
if (str == tmp)
append_without_underscores (gstring, tmp);
else
g_string_append (gstring, str);
}
}
}
}
/**
* gtk_accelerator_get_default_mod_mask:
*
* Gets the modifier mask.
*
* The modifier mask determines which modifiers are considered significant
* for keyboard accelerators. This includes all keyboard modifiers except
* for %GDK_LOCK_MASK.
*
* Returns: the modifier mask for accelerators
*/
GdkModifierType
gtk_accelerator_get_default_mod_mask (void)
{
return GDK_CONTROL_MASK|GDK_SHIFT_MASK|GDK_ALT_MASK|
GDK_SUPER_MASK|GDK_HYPER_MASK|GDK_META_MASK;
}