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Add some comments and cleanups, allow reeloading of keybindings at run-time

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This commit is contained in:
Dave Davenport 2015-07-29 09:37:40 +02:00
parent 681bd5bcbb
commit c68ab67dd8
3 changed files with 92 additions and 26 deletions
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9
include/x11-helper.h
View file

@ -92,6 +92,15 @@ int take_keyboard ( Display *display, Window w );
*/
void x11_grab_key ( Display *display, unsigned int modmask, KeySym key );
/**
* @param display Connection to the X server.
* @param modmask Modifier mask.
* @param key Key.
*
* Ungrab key on display.
*/
void x11_ungrab_key ( Display *display, unsigned int modmask, KeySym key );
/**
* @param combo String representing the key combo
* @param mod [out] The modifier specified (or AnyModifier if not specified)

92
source/rofi.c
View file

@ -1605,11 +1605,15 @@ static void cleanup ()
// Cleanup
if ( display != NULL ) {
if ( main_window != None ) {
// We should never hit this code.
release_keyboard ( display );
XFreeGC ( display, gc );
gc = NULL;
XDestroyWindow ( display, main_window );
XCloseDisplay ( display );
main_window = None;
}
XCloseDisplay ( display );
display = NULL;
}
@ -1753,7 +1757,18 @@ void show_error_message ( const char *msg, int markup )
}
}
static void * pthread_signal_process ( void *arg )
/**
* Separate thread that handles signals being send to rofi.
* Currently it listens for three signals:
* * HUP: reload the configuration.
* * INT: Quit the program.
* * USR1: Dump the current configuration to stdout.
*
* These messages are relayed to the main thread via a pipe, the write side of the pipe is passed
* as argument to this thread.
* When receiving a sig-int the thread quits.
*/
static gpointer pthread_signal_process ( gpointer arg )
{
int pfd = *( (int *) arg );
@ -1781,27 +1796,56 @@ static void * pthread_signal_process ( void *arg )
else if ( sig == SIGINT ) {
write ( pfd, "q", 1 );
// Close my end and exit.
return NULL;
g_thread_exit ( NULL );
}
}
}
}
static void release_global_keybindings ()
{
for ( unsigned int i = 0; i < num_switchers; i++ ) {
if ( switchers[i]->keystr != NULL ) {
// No need to parse key, this should be done when grabbing.
if ( switchers[i]->keysym != NoSymbol ) {
x11_ungrab_key ( display, switchers[i]->modmask, switchers[i]->keysym );
}
}
}
}
static int grab_global_keybindings ()
{
int key_bound = FALSE;
for ( unsigned int i = 0; i < num_switchers; i++ ) {
if ( switchers[i]->keystr != NULL ) {
x11_parse_key ( switchers[i]->keystr, &( switchers[i]->modmask ), &( switchers[i]->keysym ) );
if ( switchers[i]->keysym != NoSymbol ) {
x11_grab_key ( display, switchers[i]->modmask, switchers[i]->keysym );
key_bound = TRUE;
}
}
}
return key_bound;
}
static void reload_configuration ()
{
if ( find_arg ( "-no-config" ) < 0 ) {
// We need to open a new connection to X11, otherwise we get old
// configuration
Display *display = XOpenDisplay ( display_str );
if ( display ) {
load_configuration ( display );
load_configuration_dynamic ( display );
Display *temp_display = XOpenDisplay ( display_str );
if ( temp_display ) {
load_configuration ( temp_display );
load_configuration_dynamic ( temp_display );
// Sanity check
config_sanity_check ( );
parse_keys_abe ();
XCloseDisplay ( display );
XCloseDisplay ( temp_display );
}
else {
fprintf ( stderr, "Failed to get a new connection to the X11 server. No point in continuing.\n" );
abort ();
}
}
}
@ -1970,24 +2014,14 @@ int main ( int argc, char *argv[] )
}
}
else{
int key_bound = FALSE;
unsigned int key_length = 0;
// Daemon mode, Listen to key presses..
for ( unsigned int i = 0; i < num_switchers; i++ ) {
key_length = MAX ( key_length, strlen ( switchers[i]->name ) );
if ( switchers[i]->keystr != NULL ) {
x11_parse_key ( switchers[i]->keystr, &( switchers[i]->modmask ), &( switchers[i]->keysym ) );
x11_grab_key ( display, switchers[i]->modmask, switchers[i]->keysym );
key_bound = TRUE;
}
}
if ( !key_bound ) {
if ( !grab_global_keybindings () ) {
fprintf ( stderr, "Rofi was launched in daemon mode, but no key-binding was specified.\n" );
fprintf ( stderr, "Please check the manpage on how to specify a key-binding.\n" );
fprintf ( stderr, "The following modi are enabled and keys can be specified:\n" );
for ( unsigned int i = 0; i < num_switchers; i++ ) {
fprintf ( stderr, "\t* "color_bold "%*s"color_reset ": -key-%s <key>\n",
key_length, switchers[i]->name, switchers[i]->name );
fprintf ( stderr, "\t* "color_bold "%s"color_reset ": -key-%s <key>\n",
switchers[i]->name, switchers[i]->name );
}
return EXIT_FAILURE;
}
@ -1996,12 +2030,12 @@ int main ( int argc, char *argv[] )
fprintf ( stdout, "listening to the following keys:\n" );
for ( unsigned int i = 0; i < num_switchers; i++ ) {
if ( switchers[i]->keystr != NULL ) {
fprintf ( stdout, "\t* "color_bold "%*s"color_reset " on %s\n",
key_length, switchers[i]->name, switchers[i]->keystr );
fprintf ( stdout, "\t* "color_bold "%s"color_reset " on %s\n",
switchers[i]->name, switchers[i]->keystr );
}
else {
fprintf ( stdout, "\t* "color_bold "%*s"color_reset " on <unspecified>\n",
key_length, switchers[i]->name );
fprintf ( stdout, "\t* "color_bold "%s"color_reset " on <unspecified>\n",
switchers[i]->name );
}
}
}
@ -2057,7 +2091,13 @@ int main ( int argc, char *argv[] )
// Reload configuration.
if ( c == 'c' ) {
fprintf ( stdout, "Reload configuration\n" );
// Release the keybindings.
release_global_keybindings ();
// Reload config
reload_configuration ();
// Grab the possibly new keybindings.
grab_global_keybindings ();
XFlush ( display );
}
// Got message to quit.
else if ( c == 'q' ) {
@ -2071,6 +2111,8 @@ int main ( int argc, char *argv[] )
}
}
}
release_global_keybindings ();
// Join the signal process thread. (at this point it should have exited).
// this also unrefs (de-allocs) the GThread object.
g_thread_join ( pid_signal_proc );

17
source/x11-helper.c
View file

@ -276,6 +276,21 @@ void x11_grab_key ( Display *display, unsigned int modmask, KeySym key )
}
}
void x11_ungrab_key ( Display *display, unsigned int modmask, KeySym key )
{
Screen *screen = DefaultScreenOfDisplay ( display );
Window root = RootWindow ( display, XScreenNumberOfScreen ( screen ) );
KeyCode keycode = XKeysymToKeycode ( display, key );
// unbind to combinations of mod and lock masks, so caps and numlock don't confuse people
XUngrabKey ( display, keycode, modmask, root );
XUngrabKey ( display, keycode, modmask | LockMask, root );
if ( NumlockMask ) {
XUngrabKey ( display, keycode, modmask | NumlockMask, root );
XUngrabKey ( display, keycode, modmask | NumlockMask | LockMask, root );
}
}
/**
* @param display The connection to the X server.
*
@ -345,8 +360,8 @@ void x11_parse_key ( char *combo, unsigned int *mod, KeySym *key )
KeySym sym = XStringToKeysym ( combo + i );
if ( sym == NoSymbol || ( !modmask && ( strchr ( combo, '-' ) || strchr ( combo, '+' ) ) ) ) {
// TODO popup
fprintf ( stderr, "sorry, cannot understand key combination: %s\n", combo );
exit ( EXIT_FAILURE );
}
*key = sym;