Ini adalah masalah besar di Unity:
Kode di bawah ini telah diperbarui, sekarang dapat menggunakan ikon untuk menunjukkan status. Tetapi kadang-kadang mungkin lambat karena saya harus memperbarui file ikon pada hard drive kemudian memuatnya lagi. (Lihat catatan tentang masalah / batasan ini di libappindicator)
Rilis yang dikemas dengan baik tersedia di webupd8 ppa (Terima kasih kepada Alin Andrei / Andrew /)
sudo add-apt-repository ppa:nilarimogard/webupd8
sudo apt-get update
sudo apt-get install indicator-xkbmod
Referensi: Pengubah Keyboard Indikator keadaan Untuk Ubuntu: Indikator Xkbmod
Jawaban asli:
Ini tidak dihadiri untuk menjadi jawaban kanonik untuk pertanyaan itu. Itu bisa dihitung sebagai pekerjaan di sekitar. Melompat seseorang menulis solusi canggih untuk itu.
Ini adalah indikator pengubah keyboard prototipe sederhana untuk Unity.
Gambar mulai dari kiri: Ikon, Shift, Caps Terkunci, Ctrl, Alt, Super, AltGr Terkunci (Lingkaran kecil untuk menunjukkan keadaan terkunci)
File sumber unity-xkbmod.c:
/*
* unity-xkbmod.c
*
* Copyright 2014 Sneetsher <sneetsher@localhost>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*
*/
#include <string.h>
#include <X11/XKBlib.h>
#include <glib/gprintf.h>
#include <gtk/gtk.h>
#include <libappindicator/app-indicator.h>
//callback data structure
typedef struct _AppData {
Display *_display;
int *_deviceId;
AppIndicator *indicator;
} AppData;
//menu ui
static GtkActionEntry entries[] = {
{ "Quit", "application-exit", "_Quit", "<control>Q",
"Exit the application", G_CALLBACK (gtk_main_quit) },
};
static guint n_entries = G_N_ELEMENTS (entries);
static const gchar *ui_info =
"<ui>"
" <popup name='IndicatorPopup'>"
" <menuitem action='Quit' />"
" </popup>"
"</ui>";
//callback function, get xkb state, update indicator label (icon have limitation)
static gboolean update_xkb_state (gpointer data)
{
//get xkb state
XkbStateRec xkbState;
XkbGetState(((AppData*) data)->_display, *(((AppData*) data)->_deviceId), &xkbState);
//construct label
GString *label = g_string_new("");
register int i;
unsigned bit;
//loop taken from xkbwatch source
for (i = XkbNumModifiers - 1, bit = 0x80; i >= 0; i--, bit >>= 1)
{
//printf("base%d %s ", i, (xkbState.base_mods & bit) ? "on " : "off");
//printf("latched%d %s ", i, (xkbState.latched_mods & bit) ? "on " : "off");
//printf("locked%d %s ", i, (xkbState.locked_mods & bit) ? "on " : "off");
//printf("effective%d %s ", i, (xkbState.mods & bit) ? "on " : "off");
//printf("compat%d %s\n", i, (xkbState.compat_state & bit) ? "on " : "off");
//todo: change constant with xkb modifier constant (defined in the headers)
// show effective modifier stat
switch (i)
{
case 7:
g_string_prepend (label, ((xkbState.mods & bit) ? "⎇" : ""));
break;
case 6:
g_string_prepend (label, ((xkbState.mods & bit) ? "⌘" : ""));
break;
case 5:
g_string_prepend (label, ((xkbState.mods & bit) ? "5" : ""));
break;
case 4:
g_string_prepend (label, ((xkbState.mods & bit) ? "①" : ""));
break;
case 3:
g_string_prepend (label, ((xkbState.mods & bit) ? "⌥" : ""));
break;
case 2:
g_string_prepend (label, ((xkbState.mods & bit) ? "⋀" : ""));
break;
case 1:
g_string_prepend (label, ((xkbState.mods & bit) ? "⇬" : ""));
break;
case 0:
g_string_prepend (label, ((xkbState.mods & bit) ? "⇧" : ""));
break;
default:
break;
};
// show if modifier is locked
g_string_prepend (label, ((xkbState.locked_mods & bit) ? " ˳" : " "));
}
//g_string_prepend (label, "");
app_indicator_set_label (((AppData*) data)->indicator, label->str, NULL);
//g_free(label);
return TRUE;
}
int main (int argc, char **argv)
{
AppData appdata;
Display *_display;
int _deviceId;
char* displayName = strdup("");
int eventCode;
int errorReturn;
int major = XkbMajorVersion;
int minor = XkbMinorVersion;;
int reasonReturn;
AppIndicator *indicator;
GtkWidget *indicator_menu;
GtkUIManager *uim;
GtkActionGroup *action_group;
GError *error = NULL;
gtk_init (&argc, &argv);
XkbIgnoreExtension(False);
g_printf("Xkb client lib ver: %d.%d\n" , major , minor );
_display = XkbOpenDisplay(displayName, &eventCode, &errorReturn,
&major, &minor, &reasonReturn);
g_printf("Xkb server lib ver: %d.%d\n" , major , minor );
if (reasonReturn != XkbOD_Success)
{
g_printf("Unable to open display!\n");
return 1;
}
XkbDescRec* kbdDescPtr = XkbAllocKeyboard();
if (kbdDescPtr == NULL)
{
g_printf ("Failed to get keyboard description.\n");
return 2;
}
kbdDescPtr->dpy = _display;
_deviceId = kbdDescPtr->device_spec;
/*
//no need for event listener, used gtk_timeout timer
XkbSelectEventDetails(_display, XkbUseCoreKbd, XkbStateNotify,
XkbAllStateComponentsMask, XkbGroupStateMask);
*/
action_group = gtk_action_group_new ("AppActions");
gtk_action_group_add_actions (action_group, entries, n_entries, NULL);
indicator = app_indicator_new_with_path (
"Simple XKB Modifier Indicator",
"icon",
APP_INDICATOR_CATEGORY_HARDWARE,
g_get_current_dir());
uim = gtk_ui_manager_new ();
gtk_ui_manager_insert_action_group (uim, action_group, 0);
if (!gtk_ui_manager_add_ui_from_string (uim, ui_info, -1, &error))
{
g_printf ("Failed to build menus: %s\n", error->message);
g_error_free (error);
error = NULL;
return 3;
}
indicator_menu = gtk_ui_manager_get_widget (uim, "/ui/IndicatorPopup");
app_indicator_set_menu (indicator, GTK_MENU (indicator_menu));
app_indicator_set_status (indicator, APP_INDICATOR_STATUS_ACTIVE);
//app_indicator_set_label (indicator, " ⇧ ⋀ ⌥ ⎇ ⌘ ", NULL);
//symbols: shift U21E7 ctrl U22C0 alt/altgr U2325 U2387 cmd U2318
//from font: DejaVu Sans
appdata._display = _display;
appdata._deviceId = &_deviceId;
appdata.indicator = indicator;
gtk_timeout_add (120, (GtkFunction) update_xkb_state, &appdata);
//nice for realtime tasks, to replace gtk_timeout
//gtk_idle_add ((GtkFunction) idle_func, &appdata);
gtk_main ();
XCloseDisplay (_display);
return 0;
}
Menginstal header / lib yang diperlukan: (Tidak yakin jika saya melewatkan)
sudo apt-get install libx11-dev libappindicator-dev libgtk2.0-dev
Kompilasi:
gcc -Wall unity-xkbmod.c -o unity-xkbmod `pkg-config --cflags --libs appindicator-0.1` -lX11
Lari:
./unity-xkbmod
catatan:
libappindicatordigunakan untuk indikator Unity tidak memiliki fitur penting yang memudahkan untuk port indikator desktop lainnya. Lihat Bug # 812067 API diperlukan: dukungan pengaturan ikon pixbuf
Tanpa fitur ini, katakanlah kita perlu (Shift, Ctrl, Alt, AltGr, Super) dengan kunci lengket aktif; kami memiliki 3 status utama untuk masing-masing (Off, On / Latched, Locked). Jadi 3 ^ 5 ikon gabungan harus dihasilkan. (Dimana case biasa hanya 3x5 ikon tunggal)
Itu sebabnya saya menggunakan label indikator dengan simbol dari font DejaVu Sans .
Untuk meletakkan ikon, letakkan di folder yang sama dan beri nama icon.*. Format yang diterima: png, svg, ico, xpm ...
Jika Anda tidak menyukai ikon apa pun, buat saja gambar 1x1 px.
Referensi:
