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 }