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68 lines
2.2 KiB
68 lines
2.2 KiB
/******************************************************************** |
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KSld - the KDE Screenlocker Daemon |
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This file is part of the KDE project. |
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Copyright (C) 2014 Martin Gräßlin <mgraesslin@kde.org> |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*********************************************************************/ |
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#include <QCoreApplication> |
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#include <xcb/xcb.h> |
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xcb_screen_t *defaultScreen(xcb_connection_t *c, int screen) |
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{ |
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for (auto it = xcb_setup_roots_iterator(xcb_get_setup(c)); it.rem; --screen, xcb_screen_next(&it)) { |
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if (screen == 0) { |
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return it.data; |
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} |
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} |
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return nullptr; |
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} |
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xcb_window_t rootWindow(xcb_connection_t *c, int screen) |
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{ |
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xcb_screen_t *s = defaultScreen(c, screen); |
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if (!s) { |
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return XCB_WINDOW_NONE; |
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} |
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return s->root; |
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} |
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/** |
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* This app grabs the pointer from X. |
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* It is used from ksldtest to verify we report if grabbing failed when the pointer has been grabbed by another |
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* X Client. It needs to be another application, otherwise the grab cannot fail. |
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**/ |
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int main(int argc, char **argv) |
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{ |
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QCoreApplication app(argc, argv); |
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// connect to xcb |
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int screen = 0; |
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xcb_connection_t *c = xcb_connect(nullptr, &screen); |
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Q_ASSERT(c); |
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const uint8_t events = XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION; |
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xcb_grab_pointer(c, 1, rootWindow(c, screen), events, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, XCB_WINDOW_NONE, XCB_CURSOR_NONE, XCB_CURRENT_TIME); |
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xcb_flush(c); |
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const int exitCode = app.exec(); |
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xcb_ungrab_pointer(c, XCB_CURRENT_TIME); |
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xcb_flush(c); |
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xcb_disconnect(c); |
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return exitCode; |
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}
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