/**
* Change the shape extension of a window.
* @param region The region.
* @param dest The window whose shape is changed.
* @param type The kind of shape.
* @param x The horizontal offset.
* @param y The vertical offset.
*
* Set the specified Shape extension region of @p window to @p region,
* offset by @p x_offset and @p y_offset. Future changes to region
* have no effect on the window shape.
* @ingroup Ecore_X_Fixes_Group
*/
EAPI void
ecore_x_region_window_shape_set(Ecore_X_Region region,
Ecore_X_Window dest,
Ecore_X_Shape_Type type,
int x,
int y)
{
LOGFN(__FILE__, __LINE__, __FUNCTION__);
CHECK_XCB_CONN;
if (!_xfixes_avail) return;
#ifdef ECORE_XCB_XFIXES
xcb_xfixes_set_window_shape_region(_ecore_xcb_conn, dest, type, x, y, region);
// ecore_x_flush();
#endif
}
Compositor::Compositor()
: connection_(QX11Info::connection()),
root_(QX11Info::appRootWindow()),
damageExt_(xcb_get_extension_data(connection_, &xcb_damage_id)),
initFinished_(false)
{
qRegisterMetaType<ClientWindow *>();
Q_ASSERT(QCoreApplication::instance());
QCoreApplication::instance()->installNativeEventFilter(this);
auto ewmhCookie = xcb_ewmh_init_atoms(connection_, &ewmh_);
if (!xcb_ewmh_init_atoms_replies(&ewmh_, ewmhCookie, Q_NULLPTR)) {
qFatal("Cannot init EWMH");
}
auto wmCmCookie = xcb_ewmh_get_wm_cm_owner_unchecked(&ewmh_, QX11Info::appScreen());
xcb_window_t wmCmOwnerWin = XCB_NONE;
if (!xcb_ewmh_get_wm_cm_owner_reply(&ewmh_, wmCmCookie, &wmCmOwnerWin, Q_NULLPTR)) {
qFatal("Cannot check _NET_WM_CM_Sn");
}
if (wmCmOwnerWin) {
qFatal("Another compositing manager is already running");
}
auto attributesCookie = xcb_get_window_attributes_unchecked(connection_, root_);
auto damageQueryVersionCookie = xcb_damage_query_version_unchecked(connection_, 1, 1);
auto overlayWindowCookie = xcb_composite_get_overlay_window_unchecked(connection_, root_);
auto attributes =
xcbReply(xcb_get_window_attributes_reply(connection_, attributesCookie, Q_NULLPTR));
if (!attributes) {
qFatal("Cannot get root window attributes");
}
auto newEventMask = attributes->your_event_mask
| XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY
| XCB_EVENT_MASK_STRUCTURE_NOTIFY
| XCB_EVENT_MASK_PROPERTY_CHANGE;
xcb_change_window_attributes(connection_, root_, XCB_CW_EVENT_MASK, &newEventMask);
auto treeCookie = xcb_query_tree_unchecked(connection_, root_);
auto rootGeometryCookie = xcb_get_geometry_unchecked(connection_, root_);
auto damageVersion =
xcbReply(xcb_damage_query_version_reply(connection_, damageQueryVersionCookie, Q_NULLPTR));
if (!damageVersion) {
qFatal("Cannot query version of Damage extension");
}
auto overlayWindow =
xcbReply(xcb_composite_get_overlay_window_reply(connection_, overlayWindowCookie, Q_NULLPTR));
if (!overlayWindow) {
qFatal("Cannot get overlay window");
}
overlayWindow_.reset(QWindow::fromWinId(overlayWindow->overlay_win));
auto region = xcb_generate_id(connection_);
xcb_xfixes_create_region(connection_, region, 0, Q_NULLPTR);
xcb_xfixes_set_window_shape_region(connection_, overlayWindow->overlay_win, XCB_SHAPE_SK_INPUT, 0, 0, region);
xcb_xfixes_destroy_region(connection_, region);
xcb_composite_redirect_subwindows(connection_, root_, XCB_COMPOSITE_REDIRECT_MANUAL);
auto rootGeometry =
xcbReply(xcb_get_geometry_reply(connection_, rootGeometryCookie, Q_NULLPTR));
if (!rootGeometry) {
qFatal("Cannot query root window geometry");
}
rootGeometry_ = QRect(rootGeometry->x, rootGeometry->y, rootGeometry->width, rootGeometry->height);
auto tree = xcbReply(xcb_query_tree_reply(connection_, treeCookie, Q_NULLPTR));
if (!tree) {
qFatal("Cannot query window tree");
}
auto children = xcb_query_tree_children(tree.get());
for (int i = 0; i < xcb_query_tree_children_length(tree.get()); i++) {
addChildWindow(children[i]);
}
updateActiveWindow();
initFinished_ = true;
}
