void grab_key_button_checked(xcb_keycode_t keycode, xcb_button_t button, uint16_t modfield)
{
xcb_generic_error_t *err;
if (button == XCB_NONE)
err = xcb_request_check(dpy, xcb_grab_key_checked(dpy, true, root, modfield, keycode, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_SYNC));
else
err = xcb_request_check(dpy, xcb_grab_button_checked(dpy, true, root, XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_BUTTON_MOTION, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE, button, modfield));
unsigned int value = (button == XCB_NONE ? keycode : button);
char *type = (button == XCB_NONE ? "key" : "button");
if (err != NULL) {
warn("Could not grab %s %u with modfield %u: ", type, value, modfield);
if (err->error_code == XCB_ACCESS)
warn("the combination is already grabbed.\n");
else
warn("error %u encountered.\n", err->error_code);
free(err);
} else {
PRINTF("grab %s %u %u\n", type, value, modfield);
}
}
bool QxtGlobalShortcutPrivate::registerShortcut(quint32 nativeKey, quint32 nativeMods)
{
xcb_connection_t *xcbConnection = QX11Info::connection();
QList<xcb_void_cookie_t> xcbCookies;
for (quint32 maskMods : maskModifiers) {
xcbCookies << xcb_grab_key_checked(xcbConnection, 1, QX11Info::appRootWindow(),
nativeMods | maskMods, nativeKey,
XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
}
bool failed = false;
for (xcb_void_cookie_t cookie : xcbCookies) {
QScopedPointer<xcb_generic_error_t, QScopedPointerPodDeleter> error(xcb_request_check(xcbConnection, cookie));
failed = !error.isNull();
}
if (failed)
unregisterShortcut(nativeKey, nativeMods);
return !failed;
}
void MainWindow::setHotKey(const QKeySequence& hotKey_) {
// platform-specific code for global key grabbing
#ifdef WIN32
UINT i_vk, i_mod = 0;
if(!hotKey.isEmpty()) {
// disable previous hotkey
UnregisterHotKey(NULL, 10);
}
hotKey = hotKey_;
nativeFilter.setHotKey(hotKey);
settings.setValue("hotkey", hotKey);
if(hotKey.isEmpty()) return;
int key = hotKey[0];
if(key & Qt::ALT) i_mod |= MOD_ALT;
if(key & Qt::CTRL) i_mod |= MOD_CONTROL;
if(key & Qt::SHIFT) i_mod |= MOD_SHIFT;
key = key & ~(Qt::ALT | Qt::CTRL | Qt::SHIFT | Qt::META);
#ifndef VK_VOLUME_DOWN
#define VK_VOLUME_DOWN 0xAE
#define VK_VOLUME_UP 0xAF
#endif
#ifndef VK_MEDIA_NEXT_TRACK
#define VK_MEDIA_NEXT_TRACK 0xB0
#define VK_MEDIA_PREV_TRACK 0xB1
#define VK_MEDIA_STOP 0xB2
#define VK_MEDIA_PLAY_PAUSE 0xB3
#endif
#ifndef VK_PAGEUP
#define VK_PAGEUP 0x21
#define VK_PAGEDOWN 0x22
#endif
switch(key) {
case Qt::Key_Left: i_vk = VK_LEFT; break;
case Qt::Key_Right: i_vk = VK_RIGHT; break;
case Qt::Key_Up: i_vk = VK_UP; break;
case Qt::Key_Down: i_vk = VK_DOWN; break;
case Qt::Key_Space: i_vk = VK_SPACE; break;
case Qt::Key_Escape: i_vk = VK_ESCAPE; break;
case Qt::Key_Enter: i_vk = VK_RETURN; break;
case Qt::Key_Return: i_vk = VK_RETURN; break;
case Qt::Key_F1: i_vk = VK_F1; break;
case Qt::Key_F2: i_vk = VK_F2; break;
case Qt::Key_F3: i_vk = VK_F3; break;
case Qt::Key_F4: i_vk = VK_F4; break;
case Qt::Key_F5: i_vk = VK_F5; break;
case Qt::Key_F6: i_vk = VK_F6; break;
case Qt::Key_F7: i_vk = VK_F7; break;
case Qt::Key_F8: i_vk = VK_F8; break;
case Qt::Key_F9: i_vk = VK_F9; break;
case Qt::Key_F10: i_vk = VK_F10; break;
case Qt::Key_F11: i_vk = VK_F11; break;
case Qt::Key_F12: i_vk = VK_F12; break;
case Qt::Key_PageUp: i_vk = VK_PAGEUP; break;
case Qt::Key_PageDown: i_vk = VK_PAGEDOWN; break;
case Qt::Key_Home: i_vk = VK_HOME; break;
case Qt::Key_End: i_vk = VK_END; break;
case Qt::Key_Insert: i_vk = VK_INSERT; break;
case Qt::Key_Delete: i_vk = VK_DELETE; break;
case Qt::Key_VolumeDown: i_vk = VK_VOLUME_DOWN; break;
case Qt::Key_VolumeUp: i_vk = VK_VOLUME_UP; break;
case Qt::Key_MediaTogglePlayPause: i_vk = VK_MEDIA_PLAY_PAUSE; break;
case Qt::Key_MediaStop: i_vk = VK_MEDIA_STOP; break;
case Qt::Key_MediaPrevious: i_vk = VK_MEDIA_PREV_TRACK; break;
case Qt::Key_MediaNext: i_vk = VK_MEDIA_NEXT_TRACK; break;
default:
i_vk = toupper( key );
break;
}
if(!RegisterHotKey(NULL, 10, i_mod, i_vk)) {
hotKey = QKeySequence();
nativeFilter.setHotKey(hotKey);
settings.setValue("hotkey", hotKey);
QMessageBox::warning(this, "Key binding failed", "Binding global hotkey failed.");
}
#elif LINUX
auto platform = qApp->platformNativeInterface();
xcb_connection_t *c = static_cast<xcb_connection_t*>(platform->nativeResourceForWindow("connection", 0));
xcb_key_symbols_t *keysyms = xcb_key_symbols_alloc(c);
if(!hotKey.isEmpty()) {
// remove previous bindings from all screens
xcb_screen_iterator_t iter;
iter = xcb_setup_roots_iterator (xcb_get_setup (c));
for (; iter.rem; xcb_screen_next (&iter)) {
xcb_ungrab_key(c, XCB_GRAB_ANY, iter.data->root, XCB_MOD_MASK_ANY);
}
}
hotKey = hotKey_;
nativeFilter.setHotKey(hotKey);
settings.setValue("hotkey", hotKey);
if(hotKey.isEmpty()) return;
xcb_keysym_t keysym = GetX11Key(hotKey[0]);
xcb_keycode_t *keycodes = xcb_key_symbols_get_keycode(keysyms, keysym), keycode;
if(!keycodes) {
hotKey = QKeySequence();
nativeFilter.setHotKey(hotKey);
settings.setValue("hotkey", hotKey);
QMessageBox::warning(this, "Key binding failed", "Binding global hotkey failed.");
free(keysyms);
return;
}
// add bindings for all screens
xcb_screen_iterator_t iter;
iter = xcb_setup_roots_iterator (xcb_get_setup (c));
bool any_failed = false;
for (; iter.rem; xcb_screen_next (&iter)) {
int i = 0;
while(keycodes[i] != XCB_NO_SYMBOL) {
keycode = keycodes[i];
for(auto modifier : GetX11Modifier(c, keysyms, hotKey[0])) {
auto cookie = xcb_grab_key_checked(c, true, iter.data->root,
modifier, keycode, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_SYNC);
if(xcb_request_check(c, cookie)) {
any_failed = true;
}
}
i += 1;
}
}
if(any_failed) {
QMessageBox::warning(this, "Key binding warning",
"Warning: Global hotkey binding problem detected. Some other program might have a conflicting "
"key binding. If the hotkey doesn't work, try closing some programs or using a different hotkey.");
}
free(keysyms);
free(keycodes);
#endif // WIN32 or LINUX
}
