/*
* Returns the modifier mask (XCB_MOD_MASK_*) for the given keysymbol, for
* example for XCB_NUM_LOCK (usually configured to mod2).
*
* This function does not initiate any round-trips.
*
*/
uint32_t get_mod_mask_for(uint32_t keysym,
xcb_key_symbols_t *symbols,
xcb_get_modifier_mapping_reply_t *modmap_reply) {
xcb_keycode_t *codes, *modmap;
xcb_keycode_t mod_code;
modmap = xcb_get_modifier_mapping_keycodes(modmap_reply);
/* Get the list of keycodes for the given symbol */
if (!(codes = xcb_key_symbols_get_keycode(symbols, keysym)))
return 0;
/* Loop through all modifiers (Mod1-Mod5, Shift, Control, Lock) */
for (int mod = 0; mod < 8; mod++)
for (int j = 0; j < modmap_reply->keycodes_per_modifier; j++) {
/* Store the current keycode (for modifier 'mod') */
mod_code = modmap[(mod * modmap_reply->keycodes_per_modifier) + j];
/* Check if that keycode is in the list of previously resolved
* keycodes for our symbol. If so, return the modifier mask. */
for (xcb_keycode_t *code = codes; *code; code++) {
if (*code != mod_code)
continue;
free(codes);
/* This corresponds to the XCB_MOD_MASK_* constants */
return (1 << mod);
}
}
return 0;
}
/*
* Returns the mask for Mode_switch (to be used for looking up keysymbols by
* keycode).
*
*/
uint32_t get_mod_mask(xcb_connection_t *conn, uint32_t keycode) {
xcb_key_symbols_t *symbols = xcb_key_symbols_alloc(conn);
xcb_get_modifier_mapping_reply_t *modmap_r;
xcb_keycode_t *modmap, kc;
xcb_keycode_t *modeswitchcodes = xcb_key_symbols_get_keycode(symbols, keycode);
if (modeswitchcodes == NULL)
return 0;
modmap_r = xcb_get_modifier_mapping_reply(conn, xcb_get_modifier_mapping(conn), NULL);
modmap = xcb_get_modifier_mapping_keycodes(modmap_r);
for (int i = 0; i < 8; i++)
for (int j = 0; j < modmap_r->keycodes_per_modifier; j++) {
kc = modmap[i * modmap_r->keycodes_per_modifier + j];
for (xcb_keycode_t *ktest = modeswitchcodes; *ktest; ktest++) {
if (*ktest != kc)
continue;
free(modeswitchcodes);
free(modmap_r);
return (1 << i);
}
}
return 0;
}
int16_t modfield_from_keysym(xcb_keysym_t keysym)
{
uint16_t modfield = 0;
xcb_keycode_t *keycodes = NULL, *mod_keycodes = NULL;
xcb_get_modifier_mapping_reply_t *reply = NULL;
xcb_key_symbols_t *symbols = xcb_key_symbols_alloc(dpy);
if ((keycodes = xcb_key_symbols_get_keycode(symbols, keysym)) == NULL ||
(reply = xcb_get_modifier_mapping_reply(dpy, xcb_get_modifier_mapping(dpy), NULL)) == NULL ||
reply->keycodes_per_modifier < 1 ||
(mod_keycodes = xcb_get_modifier_mapping_keycodes(reply)) == NULL) {
goto end;
}
unsigned int num_mod = xcb_get_modifier_mapping_keycodes_length(reply) / reply->keycodes_per_modifier;
for (unsigned int i = 0; i < num_mod; i++) {
for (unsigned int j = 0; j < reply->keycodes_per_modifier; j++) {
xcb_keycode_t mk = mod_keycodes[i * reply->keycodes_per_modifier + j];
if (mk == XCB_NO_SYMBOL) {
continue;
}
for (xcb_keycode_t *k = keycodes; *k != XCB_NO_SYMBOL; k++) {
if (*k == mk) {
modfield |= (1 << i);
}
}
}
}
end:
xcb_key_symbols_free(symbols);
free(keycodes);
free(reply);
return modfield;
}
void keyboard::update_mapping( void )
{
auto cookie = xcb_get_modifier_mapping_unchecked( _connection );
if ( _keysyms )
xcb_key_symbols_free( _keysyms );
_keysyms = xcb_key_symbols_alloc( _connection );
auto numlockcodes = core::wrap_cptr( xcb_key_symbols_get_keycode( _keysyms, XK_Num_Lock ) );
auto shiftlockcodes = core::wrap_cptr( xcb_key_symbols_get_keycode( _keysyms, XK_Shift_Lock ) );
auto capslockcodes = core::wrap_cptr( xcb_key_symbols_get_keycode( _keysyms, XK_Caps_Lock ) );
auto modeswitchcodes = core::wrap_cptr( xcb_key_symbols_get_keycode( _keysyms, XK_Mode_switch ) );
auto modmap_r = core::wrap_cptr( xcb_get_modifier_mapping_reply( _connection, cookie, nullptr ) );
xcb_keycode_t *modmap = xcb_get_modifier_mapping_keycodes( modmap_r.get() );
_numlock = 0;
_shiftlock = 0;
_capslock = 0;
_modeswitch = 0;
for( int i = 0; i < 8; i++ )
{
for( int j = 0; j < modmap_r->keycodes_per_modifier; j++ )
{
xcb_keycode_t kc = modmap[i * modmap_r->keycodes_per_modifier + j];
look_for( _numlock, numlockcodes, kc, i );
look_for( _shiftlock, shiftlockcodes, kc, i );
look_for( _capslock, capslockcodes, kc, i );
look_for( _modeswitch, modeswitchcodes, kc, i );
}
}
}
static unsigned GetModifier( xcb_connection_t *p_connection, xcb_key_symbols_t *p_symbols, xcb_keysym_t sym )
{
static const unsigned pi_mask[8] = {
XCB_MOD_MASK_SHIFT, XCB_MOD_MASK_LOCK, XCB_MOD_MASK_CONTROL, XCB_MOD_MASK_1,
XCB_MOD_MASK_2, XCB_MOD_MASK_3, XCB_MOD_MASK_4, XCB_MOD_MASK_5
};
const xcb_keycode_t key = xcb_key_symbols_get_keycode( p_symbols, sym );
if( key == 0 )
return 0;
xcb_get_modifier_mapping_cookie_t r = xcb_get_modifier_mapping( p_connection );
xcb_get_modifier_mapping_reply_t *p_map = xcb_get_modifier_mapping_reply( p_connection, r, NULL );
if( !p_map )
return 0;
xcb_keycode_t *p_keycode = xcb_get_modifier_mapping_keycodes( p_map );
if( !p_keycode )
return 0;
unsigned i_mask = 0;
for( int i = 0; i < 8; i++ )
{
for( int j = 0; j < p_map->keycodes_per_modifier; j++ )
{
if( p_keycode[i * p_map->keycodes_per_modifier + j] == key )
i_mask = pi_mask[i];
}
}
free( p_map ); // FIXME to check
return i_mask;
}
static unsigned GetModifier( xcb_connection_t *p_connection, xcb_key_symbols_t *p_symbols, xcb_keysym_t sym )
{
static const unsigned pi_mask[8] = {
XCB_MOD_MASK_SHIFT, XCB_MOD_MASK_LOCK, XCB_MOD_MASK_CONTROL,
XCB_MOD_MASK_1, XCB_MOD_MASK_2, XCB_MOD_MASK_3,
XCB_MOD_MASK_4, XCB_MOD_MASK_5
};
if( sym == 0 )
return 0; /* no modifier */
xcb_get_modifier_mapping_cookie_t r =
xcb_get_modifier_mapping( p_connection );
xcb_get_modifier_mapping_reply_t *p_map =
xcb_get_modifier_mapping_reply( p_connection, r, NULL );
if( !p_map )
return 0;
xcb_keycode_t *p_keys = xcb_key_symbols_get_keycode( p_symbols, sym );
if( !p_keys )
goto end;
int i = 0;
bool no_modifier = true;
while( p_keys[i] != XCB_NO_SYMBOL )
{
if( p_keys[i] != 0 )
{
no_modifier = false;
break;
}
i++;
}
if( no_modifier )
goto end;
xcb_keycode_t *p_keycode = xcb_get_modifier_mapping_keycodes( p_map );
if( !p_keycode )
goto end;
for( int i = 0; i < 8; i++ )
for( int j = 0; j < p_map->keycodes_per_modifier; j++ )
for( int k = 0; p_keys[k] != XCB_NO_SYMBOL; k++ )
if( p_keycode[i*p_map->keycodes_per_modifier + j] == p_keys[k])
{
free( p_keys );
free( p_map );
return pi_mask[i];
}
end:
free( p_keys );
free( p_map ); // FIXME to check
return 0;
}
/*
* Finds out which modifier mask is the one for numlock, as the user may change this.
*
*/
void xcb_get_numlock_mask(xcb_connection_t *conn) {
xcb_key_symbols_t *keysyms;
xcb_get_modifier_mapping_cookie_t cookie;
xcb_get_modifier_mapping_reply_t *reply;
xcb_keycode_t *modmap;
int mask, i;
const int masks[8] = { XCB_MOD_MASK_SHIFT,
XCB_MOD_MASK_LOCK,
XCB_MOD_MASK_CONTROL,
XCB_MOD_MASK_1,
XCB_MOD_MASK_2,
XCB_MOD_MASK_3,
XCB_MOD_MASK_4,
XCB_MOD_MASK_5 };
/* Request the modifier map */
cookie = xcb_get_modifier_mapping_unchecked(conn);
/* Get the keysymbols */
keysyms = xcb_key_symbols_alloc(conn);
if ((reply = xcb_get_modifier_mapping_reply(conn, cookie, NULL)) == NULL) {
xcb_key_symbols_free(keysyms);
return;
}
modmap = xcb_get_modifier_mapping_keycodes(reply);
/* Get the keycode for numlock */
#ifdef OLD_XCB_KEYSYMS_API
xcb_keycode_t numlock = xcb_key_symbols_get_keycode(keysyms, XCB_NUM_LOCK);
#else
/* For now, we only use the first keysymbol. */
xcb_keycode_t *numlock_syms = xcb_key_symbols_get_keycode(keysyms, XCB_NUM_LOCK);
if (numlock_syms == NULL)
return;
xcb_keycode_t numlock = *numlock_syms;
free(numlock_syms);
#endif
/* Check all modifiers (Mod1-Mod5, Shift, Control, Lock) */
for (mask = 0; mask < 8; mask++)
for (i = 0; i < reply->keycodes_per_modifier; i++)
if (modmap[(mask * reply->keycodes_per_modifier) + i] == numlock)
xcb_numlock_mask = masks[mask];
xcb_key_symbols_free(keysyms);
free(reply);
}
XRecordKeyboardMonitor::XRecordKeyboardMonitor(Display *display)
: m_connection(xcb_connect(XDisplayString(display), 0)),
m_modifiersPressed(0), m_keysPressed(0)
{
if (!m_connection) {
return;
}
xcb_get_modifier_mapping_cookie_t modmapCookie =
xcb_get_modifier_mapping(m_connection);
m_context = xcb_generate_id(m_connection);
xcb_record_range_t range;
memset(&range, 0, sizeof(range));
range.device_events.first = XCB_KEY_PRESS;
range.device_events.last = XCB_KEY_RELEASE;
xcb_record_client_spec_t cs = XCB_RECORD_CS_ALL_CLIENTS;
xcb_record_create_context(m_connection, m_context, 0, 1, 1, &cs, &range);
xcb_flush(m_connection);
QScopedPointer<xcb_get_modifier_mapping_reply_t, QScopedPointerPodDeleter>
modmap(xcb_get_modifier_mapping_reply(m_connection, modmapCookie, 0));
if (!modmap) {
return;
}
int nModifiers = xcb_get_modifier_mapping_keycodes_length(modmap.data());
xcb_keycode_t *modifiers = xcb_get_modifier_mapping_keycodes(modmap.data());
m_modifier.fill(false, std::numeric_limits<xcb_keycode_t>::max() + 1);
for (xcb_keycode_t *i = modifiers; i < modifiers + nModifiers; i++) {
m_modifier[*i] = true;
}
m_ignore.fill(false, std::numeric_limits<xcb_keycode_t>::max() + 1);
for (xcb_keycode_t *i = modifiers;
i < modifiers + modmap->keycodes_per_modifier; i++)
{
m_ignore[*i] = true;
}
m_pressed.fill(false, std::numeric_limits<xcb_keycode_t>::max() + 1);
m_cookie = xcb_record_enable_context(m_connection, m_context);
xcb_flush(m_connection);
m_notifier = new QSocketNotifier(xcb_get_file_descriptor(m_connection),
QSocketNotifier::Read, this);
connect(m_notifier, SIGNAL(activated(int)), SLOT(processNextReply()));
m_notifier->setEnabled(true);
}
static
void update_keys_mask() {
xcb_keycode_t key_num, key_shift, key_caps, key_mode, key;
xcb_get_modifier_mapping_reply_t *reply;
xcb_keycode_t *codes;
unsigned int i, j;
nil_.mask_numlock = 0;
nil_.mask_shiftlock = 0;
nil_.mask_capslock = 0;
nil_.mask_modeswitch = 0;
key_num = get_keycode(XK_Num_Lock);
key_shift = get_keycode(XK_Shift_Lock);
key_caps = get_keycode(XK_Caps_Lock);
key_mode = get_keycode(XK_Mode_switch);
reply = xcb_get_modifier_mapping_reply(nil_.con,
xcb_get_modifier_mapping_unchecked(nil_.con), 0);
codes = xcb_get_modifier_mapping_keycodes(reply);
/* The number of keycodes in the list is 8 * keycodes_per_modifier */
for (i = 0; i < 8; ++i) {
for (j = 0; j < reply->keycodes_per_modifier; ++j) {
key = codes[i * reply->keycodes_per_modifier + j];
if (!key) {
continue;
}
if (key == key_num) {
nil_.mask_numlock = (uint16_t)(1 << i);
} else if (key == key_shift) {
nil_.mask_shiftlock = (uint16_t)(1 << i);
} else if (key == key_caps) {
nil_.mask_capslock = (uint16_t)(1 << i);
} else if (key == key_mode) {
nil_.mask_modeswitch = (uint16_t)(1 << i);
}
}
}
NIL_LOG("mask num=0x%x shift=0x%x caps=0x%x mode=0x%x", nil_.mask_numlock,
nil_.mask_shiftlock, nil_.mask_capslock, nil_.mask_modeswitch);
free(reply);
}
void App::keyRelease(const xcb_key_release_event_t* event)
{
unsigned int mk = event->state & USED_MASK;
// ev.state is state before the key release, so just checking mk being 0 isn't enough
// using XQueryPointer() also doesn't seem to work well, so the check that all
// modifiers are released: only one modifier is active and the currently released
// key is this modifier - if yes, release the grab
int mod_index = -1;
for (int i = XCB_MAP_INDEX_SHIFT;
i <= XCB_MAP_INDEX_5;
++i)
if ((mk & (1 << i)) != 0) {
if (mod_index >= 0)
return;
mod_index = i;
}
bool release = false;
if (mod_index == -1)
release = true;
else {
auto cookie = xcb_get_modifier_mapping(QX11Info::connection());
auto reply = xcb_get_modifier_mapping_reply(QX11Info::connection(), cookie, NULL);
if (reply) {
auto keycodes = xcb_get_modifier_mapping_keycodes(reply);
for (int i = 0; i < reply->keycodes_per_modifier; i++) {
if (keycodes[reply->keycodes_per_modifier * mod_index + i]
== event->detail) {
release = true;
}
}
}
free(reply);
}
if (!release) {
return;
}
if (m_keyboardGrabbed) {
accept();
}
}
static int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
printf("Keypress %d, state raw = %d\n", event->detail, event->state);
/* Remove the numlock bit, all other bits are modifiers we can bind to */
uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK);
/* Only use the lower 8 bits of the state (modifier masks) so that mouse
* button masks are filtered out */
state_filtered &= 0xFF;
xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, state_filtered);
printf("sym = %c (%d)\n", sym, sym);
if (sym == XK_Return || sym == XK_KP_Enter) {
if (current_step == STEP_WELCOME) {
current_step = STEP_GENERATE;
/* Set window title */
xcb_change_property(conn,
XCB_PROP_MODE_REPLACE,
win,
A__NET_WM_NAME,
A_UTF8_STRING,
8,
strlen("i3: generate config"),
"i3: generate config");
xcb_flush(conn);
}
else finish();
}
/* cancel any time */
if (sym == XK_Escape)
exit(0);
/* Check if this is Mod1 or Mod4. The modmap contains Shift, Lock, Control,
* Mod1, Mod2, Mod3, Mod4, Mod5 (in that order) */
xcb_keycode_t *modmap = xcb_get_modifier_mapping_keycodes(modmap_reply);
/* Mod1? */
int mask = 3;
for (int i = 0; i < modmap_reply->keycodes_per_modifier; i++) {
xcb_keycode_t code = modmap[(mask * modmap_reply->keycodes_per_modifier) + i];
if (code == XCB_NONE)
continue;
printf("Modifier keycode for Mod1: 0x%02x\n", code);
if (code == event->detail) {
modifier = MOD_Mod1;
printf("This is Mod1!\n");
}
}
/* Mod4? */
mask = 6;
for (int i = 0; i < modmap_reply->keycodes_per_modifier; i++) {
xcb_keycode_t code = modmap[(mask * modmap_reply->keycodes_per_modifier) + i];
if (code == XCB_NONE)
continue;
printf("Modifier keycode for Mod4: 0x%02x\n", code);
if (code == event->detail) {
modifier = MOD_Mod4;
printf("This is Mod4!\n");
}
}
handle_expose();
return 1;
}
// http://svn.tribler.org/vlc/trunk/modules/control/globalhotkeys/xcb.c
// Copyright (C) 2009 the VideoLAN team
static unsigned GetModifier( xcb_connection_t *p_connection, xcb_key_symbols_t *p_symbols, xcb_keysym_t sym )
{
static const unsigned pi_mask[8] = {
XCB_MOD_MASK_SHIFT, XCB_MOD_MASK_LOCK, XCB_MOD_MASK_CONTROL,
XCB_MOD_MASK_1, XCB_MOD_MASK_2, XCB_MOD_MASK_3,
XCB_MOD_MASK_4, XCB_MOD_MASK_5
};
if( sym == 0 )
return 0; /* no modifier */
#ifdef XCB_KEYSYM_OLD_API /* as seen in Debian Lenny */
const xcb_keycode_t key = xcb_key_symbols_get_keycode( p_symbols, sym );
if( key == 0 )
return 0;
#else
const xcb_keycode_t *p_keys = xcb_key_symbols_get_keycode( p_symbols, sym );
if( !p_keys )
return 0;
int i = 0;
bool no_modifier = true;
while( p_keys[i] != XCB_NO_SYMBOL )
{
if( p_keys[i] != 0 )
{
no_modifier = false;
break;
}
i++;
}
if( no_modifier )
return 0;
#endif
xcb_get_modifier_mapping_cookie_t r =
xcb_get_modifier_mapping( p_connection );
xcb_get_modifier_mapping_reply_t *p_map =
xcb_get_modifier_mapping_reply( p_connection, r, NULL );
if( !p_map )
return 0;
xcb_keycode_t *p_keycode = xcb_get_modifier_mapping_keycodes( p_map );
if( !p_keycode )
return 0;
for( int i = 0; i < 8; i++ )
for( int j = 0; j < p_map->keycodes_per_modifier; j++ )
#ifdef XCB_KEYSYM_OLD_API /* as seen in Debian Lenny */
if( p_keycode[i * p_map->keycodes_per_modifier + j] == key )
{
free( p_map );
return pi_mask[i];
}
#else
for( int k = 0; p_keys[k] != XCB_NO_SYMBOL; k++ )
if( p_keycode[i*p_map->keycodes_per_modifier + j] == p_keys[k])
{
free( p_map );
return pi_mask[i];
}
#endif
free( p_map ); // FIXME to check
return 0;
}
