/*
* This sets up the DAMAGE extentsion to receive damage events on all
* child windows
*
*/
static void set_up_damage_notifications(xcb_connection_t *conn,
xcb_screen_t *scr) {
xcb_damage_query_version_unchecked(conn, XCB_DAMAGE_MAJOR_VERSION,
XCB_DAMAGE_MINOR_VERSION);
dam_ext_data = xcb_get_extension_data(conn, &xcb_damage_id);
xcb_query_tree_reply_t *reply =
xcb_query_tree_reply(conn, xcb_query_tree(conn, scr->root), NULL);
xcb_window_t *children = xcb_query_tree_children(reply);
xcb_get_window_attributes_cookie_t *attribs =
(xcb_get_window_attributes_cookie_t *)malloc(
sizeof(xcb_get_window_attributes_cookie_t) * reply->children_len);
if (!attribs) {
errx(EXIT_FAILURE, "Failed to allocate memory");
}
for (int i = 0; i < reply->children_len; ++i) {
attribs[i] = xcb_get_window_attributes_unchecked(conn, children[i]);
}
for (int i = 0; i < reply->children_len; ++i) {
/* Get attributes to check if input-only window */
xcb_get_window_attributes_reply_t *attrib =
xcb_get_window_attributes_reply(conn, attribs[i], NULL);
create_damage(conn, children[i], attrib);
}
free(attribs);
free(reply);
}
void X11XRenderBackend::init(bool createOverlay)
{
if (m_front != XCB_RENDER_PICTURE_NONE)
xcb_render_free_picture(connection(), m_front);
bool haveOverlay = createOverlay ? m_overlayWindow->create() : (m_overlayWindow->window() != XCB_WINDOW_NONE);
if (haveOverlay) {
m_overlayWindow->setup(XCB_WINDOW_NONE);
ScopedCPointer<xcb_get_window_attributes_reply_t> attribs(xcb_get_window_attributes_reply(connection(),
xcb_get_window_attributes_unchecked(connection(), m_overlayWindow->window()), NULL));
if (!attribs) {
setFailed("Failed getting window attributes for overlay window");
return;
}
m_format = XRenderUtils::findPictFormat(attribs->visual);
if (m_format == 0) {
setFailed("Failed to find XRender format for overlay window");
return;
}
m_front = xcb_generate_id(connection());
xcb_render_create_picture(connection(), m_front, m_overlayWindow->window(), m_format, 0, NULL);
} else {
// create XRender picture for the root window
m_format = XRenderUtils::findPictFormat(defaultScreen()->root_visual);
if (m_format == 0) {
setFailed("Failed to find XRender format for root window");
return; // error
}
m_front = xcb_generate_id(connection());
const uint32_t values[] = {XCB_SUBWINDOW_MODE_INCLUDE_INFERIORS};
xcb_render_create_picture(connection(), m_front, rootWindow(), m_format, XCB_RENDER_CP_SUBWINDOW_MODE, values);
}
createBuffer();
}
int handle_map_request_event(void *data, xcb_connection_t *c, xcb_map_request_event_t *event)
{
xcb_get_window_attributes_cookie_t win_attrs_cookie;
xcb_get_window_attributes_reply_t *win_attrs_reply;
win_attrs_cookie = xcb_get_window_attributes_unchecked(c, event->window);
win_attrs_reply = xcb_get_window_attributes_reply(c, win_attrs_cookie, NULL);
if (!win_attrs_reply) {
fprintf(stderr, "map request: failed to get window attributes\n");
return -1;
}
if (win_attrs_reply->override_redirect) {
fprintf(stderr, "map request: window has override redirect set - ignoring map request\n");
return 0;
}
client_t *client = NULL;
client = find_client(event->window);
if (!client)
client = manage_window(event->window);
xcb_map_window(c, event->window);
run_arrange_hook();
free(win_attrs_reply);
return 0;
}
/** The map request event handler.
* \param ev The event.
*/
static void
event_handle_maprequest(xcb_map_request_event_t *ev)
{
client_t *c;
xcb_get_window_attributes_cookie_t wa_c;
xcb_get_window_attributes_reply_t *wa_r;
xcb_get_geometry_cookie_t geom_c;
xcb_get_geometry_reply_t *geom_r;
wa_c = xcb_get_window_attributes_unchecked(globalconf.connection, ev->window);
if(!(wa_r = xcb_get_window_attributes_reply(globalconf.connection, wa_c, NULL)))
return;
if(wa_r->override_redirect)
goto bailout;
if(xembed_getbywin(&globalconf.embedded, ev->window))
{
xcb_map_window(globalconf.connection, ev->window);
xembed_window_activate(globalconf.connection, ev->window);
}
else if((c = client_getbywin(ev->window)))
{
/* Check that it may be visible, but not asked to be hidden */
if(client_on_selected_tags(c) && !c->hidden)
{
lua_State *L = globalconf_get_lua_State();
luaA_object_push(L, c);
client_set_minimized(L, -1, false);
lua_pop(L, 1);
/* it will be raised, so just update ourself */
client_raise(c);
}
}
else
{
geom_c = xcb_get_geometry_unchecked(globalconf.connection, ev->window);
if(!(geom_r = xcb_get_geometry_reply(globalconf.connection, geom_c, NULL)))
{
goto bailout;
}
client_manage(ev->window, geom_r, wa_r);
p_delete(&geom_r);
}
bailout:
p_delete(&wa_r);
}
int add_winvec(struct window **list, xcb_window_t wid[], int len)
{
xcb_get_window_attributes_cookie_t ack[len];
xcb_get_geometry_cookie_t gck[len];
struct window *w;
int i, n = 0;
for (i = 0; i < len; ++i) {
ack[i] = xcb_get_window_attributes_unchecked(X, wid[i]);
gck[i] = xcb_get_geometry_unchecked(X, wid[i]);
}
for (i = 0; i < len; ++i) {
xcb_get_window_attributes_reply_t *ar;
xcb_get_geometry_reply_t *gr;
if ((w = add_win(list, wid[i])) != NULL) {
ar = xcb_get_window_attributes_reply(X, ack[i], NULL);
gr = xcb_get_geometry_reply(X, gck[i], NULL);
if (ar && gr) {
w->visual = ar->visual;
w->_class = ar->_class;
w->map_state = ar->map_state;
w->x = gr->x;
w->y = gr->y;
w->width = gr->width;
w->height = gr->height;
w->border_width = gr->border_width;
free(ar);
free(gr);
++n;
} else {
if (ar)
free(ar);
if (gr)
free(gr);
remove_win(list, w);
continue;
}
}
}
debugf("add_winvec: added %d of %d windows to stack\n", n, len);
return n;
}
static
void handle_map_request(xcb_map_request_event_t *e) {
xcb_get_window_attributes_reply_t *reply;
struct client_t *c;
struct workspace_t *ws;
NIL_LOG("event: map request win=%d", e->window);
reply = xcb_get_window_attributes_reply(nil_.con,
xcb_get_window_attributes_unchecked(nil_.con, e->window), 0);
if (!reply) {
NIL_ERR("no reply %d", e->window);
return;
}
if (reply->override_redirect) {
NIL_ERR("override_redirect %d", e->window);
free(reply);
return;
}
free(reply);
c = find_client(e->window, &ws);
if (!c) {
NIL_ERR("no client %d", e->window);
return;
}
init_client(c);
NIL_SET_FLAG(c->flags, CLIENT_DISPLAY);
if (!NIL_HAS_FLAG(c->flags, CLIENT_FLOAT)) {
/* only rearrange if it's not float */
arrange_ws(ws);
}
if (check_client_size(c)) { /* fix window size if needed */
update_client_geom(c);
}
config_client(c);
if (ws == &nil_.ws[nil_.ws_idx]) {
xcb_map_window(nil_.con, c->win);
xcb_set_input_focus(nil_.con, XCB_INPUT_FOCUS_POINTER_ROOT, c->win,
XCB_CURRENT_TIME);
}
xcb_flush(nil_.con);
}
void FdoSelectionManager::addDamageWatch(xcb_window_t client)
{
qCDebug(SNIPROXY) << "adding damage watch for " << client;
xcb_connection_t *c = QX11Info::connection();
const auto attribsCookie = xcb_get_window_attributes_unchecked(c, client);
auto damageId = xcb_generate_id(c);
m_damageWatches[client] = damageId;
xcb_damage_create(c, damageId, client, XCB_DAMAGE_REPORT_LEVEL_NON_EMPTY);
QScopedPointer<xcb_get_window_attributes_reply_t, QScopedPointerPodDeleter> attr(xcb_get_window_attributes_reply(c, attribsCookie, Q_NULLPTR));
uint32_t events = XCB_EVENT_MASK_STRUCTURE_NOTIFY;
if (!attr.isNull()) {
events = events | attr->your_event_mask;
}
// the event mask will not be removed again. We cannot track whether another component also needs STRUCTURE_NOTIFY (e.g. KWindowSystem).
// if we would remove the event mask again, other areas will break.
xcb_change_window_attributes(c, client, XCB_CW_EVENT_MASK, &events);
}
/* FIXME: round trips */
static Shadow *
_ecore_x_window_tree_walk(Ecore_X_Window window)
{
Shadow *s, **sl;
xcb_get_window_attributes_reply_t *reply_attr;
xcb_get_geometry_reply_t *reply_geom;
xcb_query_tree_reply_t *reply_tree;
xcb_get_window_attributes_cookie_t cookie_attr;
xcb_get_geometry_cookie_t cookie_geom;
xcb_query_tree_cookie_t cookie_tree;
int i, j;
CHECK_XCB_CONN;
cookie_attr = xcb_get_window_attributes_unchecked(_ecore_xcb_conn, window);
reply_attr = xcb_get_window_attributes_reply(_ecore_xcb_conn, cookie_attr, NULL);
if (!reply_attr) return NULL;
if (reply_attr->map_state != XCB_MAP_STATE_VIEWABLE)
{
free(reply_attr);
return NULL;
}
free(reply_attr);
cookie_geom = xcb_get_geometry_unchecked(_ecore_xcb_conn, window);
reply_geom = xcb_get_geometry_reply(_ecore_xcb_conn, cookie_geom, NULL);
if (!reply_geom) return NULL;
if (!(s = calloc(1, sizeof(Shadow))))
{
free(reply_geom);
return NULL;
}
s->win = window;
s->x = reply_geom->x;
s->y = reply_geom->y;
s->w = reply_geom->width;
s->h = reply_geom->height;
free(reply_geom);
cookie_tree = xcb_query_tree_unchecked(_ecore_xcb_conn, window);
reply_tree = xcb_query_tree_reply(_ecore_xcb_conn, cookie_tree, NULL);
if (reply_tree)
{
xcb_window_t *list;
int num;
num = xcb_query_tree_children_length(reply_tree);
list = xcb_query_tree_children(reply_tree);
s->children = calloc(1, sizeof(Shadow *) * num);
if (s->children)
{
s->children_num = num;
for (i = 0; i < num; i++)
{
s->children[i] = _ecore_x_window_tree_walk(list[i]);
if (s->children[i])
s->children[i]->parent = s;
}
/* compress list down */
j = 0;
for (i = 0; i < num; i++)
{
if (s->children[i])
{
s->children[j] = s->children[i];
j++;
}
}
if (j == 0)
{
free(s->children);
s->children = NULL;
s->children_num = 0;
}
else
{
s->children_num = j;
sl = realloc(s->children, sizeof(Shadow *) * j);
if (sl) s->children = sl;
}
}
free(reply_tree);
}
return s;
}
/** Scan X to find windows to manage.
*/
static void
scan(xcb_query_tree_cookie_t tree_c[])
{
int i, x_screen, tree_c_len;
const int screen_max = xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
xcb_query_tree_reply_t *tree_r;
xcb_window_t *wins = NULL;
xcb_get_window_attributes_reply_t *attr_r;
xcb_get_geometry_reply_t *geom_r;
long state;
for(x_screen = 0; x_screen < screen_max; x_screen++)
{
tree_r = xcb_query_tree_reply(globalconf.connection,
tree_c[x_screen],
NULL);
if(!tree_r)
continue;
/* Get the tree of the children windows of the current root window */
if(!(wins = xcb_query_tree_children(tree_r)))
fatal("cannot get tree children");
tree_c_len = xcb_query_tree_children_length(tree_r);
xcb_get_window_attributes_cookie_t attr_wins[tree_c_len];
xcb_get_property_cookie_t state_wins[tree_c_len];
for(i = 0; i < tree_c_len; i++)
{
attr_wins[i] = xcb_get_window_attributes_unchecked(globalconf.connection,
wins[i]);
state_wins[i] = window_state_get_unchecked(wins[i]);
}
xcb_get_geometry_cookie_t *geom_wins[tree_c_len];
for(i = 0; i < tree_c_len; i++)
{
attr_r = xcb_get_window_attributes_reply(globalconf.connection,
attr_wins[i],
NULL);
state = window_state_get_reply(state_wins[i]);
if(!attr_r || attr_r->override_redirect
|| attr_r->map_state == XCB_MAP_STATE_UNMAPPED
|| state == XCB_ICCCM_WM_STATE_WITHDRAWN)
{
geom_wins[i] = NULL;
p_delete(&attr_r);
continue;
}
p_delete(&attr_r);
/* Get the geometry of the current window */
geom_wins[i] = p_alloca(xcb_get_geometry_cookie_t, 1);
*(geom_wins[i]) = xcb_get_geometry_unchecked(globalconf.connection, wins[i]);
}
for(i = 0; i < tree_c_len; i++)
{
if(!geom_wins[i] || !(geom_r = xcb_get_geometry_reply(globalconf.connection,
*(geom_wins[i]), NULL)))
continue;
/* The window can be mapped, so force it to be undrawn for startup */
xcb_unmap_window(globalconf.connection, wins[i]);
client_manage(wins[i], geom_r,
phys_screen_getbycoord(geom_r->x, geom_r->y, geom_r->root),
x_screen, true);
p_delete(&geom_r);
}
p_delete(&tree_r);
}
}
QPixmap QXcbScreen::grabWindow(WId window, int x, int y, int width, int height) const
{
if (width == 0 || height == 0)
return QPixmap();
// TODO: handle multiple screens
QXcbScreen *screen = const_cast<QXcbScreen *>(this);
xcb_window_t root = screen->root();
if (window == 0)
window = root;
xcb_get_geometry_cookie_t geometry_cookie = xcb_get_geometry_unchecked(xcb_connection(), window);
xcb_get_geometry_reply_t *reply =
xcb_get_geometry_reply(xcb_connection(), geometry_cookie, NULL);
if (!reply) {
return QPixmap();
}
if (width < 0)
width = reply->width - x;
if (height < 0)
height = reply->height - y;
geometry_cookie = xcb_get_geometry_unchecked(xcb_connection(), root);
xcb_get_geometry_reply_t *root_reply =
xcb_get_geometry_reply(xcb_connection(), geometry_cookie, NULL);
if (!root_reply) {
free(reply);
return QPixmap();
}
if (reply->depth == root_reply->depth) {
// if the depth of the specified window and the root window are the
// same, grab pixels from the root window (so that we get the any
// overlapping windows and window manager frames)
// map x and y to the root window
xcb_translate_coordinates_cookie_t translate_cookie =
xcb_translate_coordinates_unchecked(xcb_connection(), window, root, x, y);
xcb_translate_coordinates_reply_t *translate_reply =
xcb_translate_coordinates_reply(xcb_connection(), translate_cookie, NULL);
if (!translate_reply) {
free(reply);
free(root_reply);
return QPixmap();
}
x = translate_reply->dst_x;
y = translate_reply->dst_y;
window = root;
free(translate_reply);
free(reply);
reply = root_reply;
} else {
free(root_reply);
root_reply = 0;
}
xcb_get_window_attributes_reply_t *attributes_reply =
xcb_get_window_attributes_reply(xcb_connection(), xcb_get_window_attributes_unchecked(xcb_connection(), window), NULL);
if (!attributes_reply) {
free(reply);
return QPixmap();
}
const xcb_visualtype_t *visual = screen->visualForId(attributes_reply->visual);
free(attributes_reply);
xcb_pixmap_t pixmap = xcb_generate_id(xcb_connection());
xcb_create_pixmap(xcb_connection(), reply->depth, pixmap, window, width, height);
uint32_t gc_value_mask = XCB_GC_SUBWINDOW_MODE;
uint32_t gc_value_list[] = { XCB_SUBWINDOW_MODE_INCLUDE_INFERIORS };
xcb_gcontext_t gc = xcb_generate_id(xcb_connection());
xcb_create_gc(xcb_connection(), gc, pixmap, gc_value_mask, gc_value_list);
xcb_copy_area(xcb_connection(), window, pixmap, gc, x, y, 0, 0, width, height);
QPixmap result = qt_xcb_pixmapFromXPixmap(connection(), pixmap, width, height, reply->depth, visual);
free(reply);
xcb_free_gc(xcb_connection(), gc);
xcb_free_pixmap(xcb_connection(), pixmap);
return result;
}
int main(int argc,char**argv){
xcb_connection_t*d=xcb_connect(0,0);
int32_t*x,*y,*tx=0,mx,my,rt=xcb_setup_roots_iterator(xcb_get_setup(d)).data->root,cs[255],*cz=cs+1;
uint8_t mz,mZ;
xcb_change_window_attributes(d,rt,XCB_CW_EVENT_MASK,&cwa);
xcb_grab_key(d,1,rt,0,64,XCB_GRAB_MODE_ASYNC,XCB_GRAB_MODE_ASYNC);
xcb_grab_key(d,1,rt,8,XCB_GRAB_ANY,XCB_GRAB_MODE_ASYNC,XCB_GRAB_MODE_ASYNC);
xcb_grab_button(d,1,rt,XCB_EVENT_MASK_BUTTON_PRESS,XCB_GRAB_MODE_ASYNC,XCB_GRAB_MODE_ASYNC,XCB_NONE,XCB_NONE,XCB_GRAB_ANY,8);
#ifdef COMPOSITE
xcb_composite_redirect_subwindows(d,rt,XCB_COMPOSITE_REDIRECT_AUTOMATIC);
#endif
xcb_generic_event_t*e=0;
main:xcb_flush(d);
waitpid(-1,0,WNOHANG);
noflush:x=y=cz-1;
again:free(e);
switch((e=xcb_wait_for_event(d))->response_type&127){
case XCB_BUTTON_PRESS:
for(;x>cs;x--)
if(*x==((xcb_button_press_event_t*)e)->child){
if(((xcb_key_press_event_t*)e)->detail==2)goto pocus;
case XCB_KEY_PRESS:
mz=128|((xcb_key_press_event_t*)e)->detail;
my=((xcb_key_press_event_t*)e)->state;
goto*(cz==cs+1?&&kcode:&&stack);
}
goto noflush;
case XCB_KEY_RELEASE:
if(((xcb_key_press_event_t*)e)->detail!=64||!tx)default:goto again;
xt:x=tx;
tx=0;
goto stack;
case XCB_CONFIGURE_REQUEST:{
void*p=buf;
for(mz=0;mz<5;mz++)
if(((xcb_configure_request_event_t*)e)->value_mask&1<<mz){*(uint32_t*)p=*(int16_t*)(((void*)e)+16+mz*2);p+=4;}
if(((xcb_configure_request_event_t*)e)->value_mask&XCB_CONFIG_WINDOW_SIBLING){*(uint32_t*)p=((xcb_configure_request_event_t*)e)->sibling;p+=4;}
if(mz=((xcb_configure_request_event_t*)e)->value_mask&XCB_CONFIG_WINDOW_STACK_MODE)*(uint32_t*)p=((xcb_configure_request_event_t*)e)->stack_mode;
xcb_configure_window(d,((xcb_configure_request_event_t*)e)->window,((xcb_configure_request_event_t*)e)->value_mask,buf);
if(mz){
p=xcb_query_tree_reply(d,xcb_query_tree_unchecked(d,rt),0);
int32_t*cl=p+32+((xcb_query_tree_reply_t*)p)->children_len*4;
for(y=p+32;y<cl;y++){
for(x=cs+1;x<cz;x++)
if(*x==*y)goto nono;
*y=0;
nono:;
}
x=cs;
for(y=p+32;y<cl;y++)
if(*y)*++x=*y;
free(p);
goto pocus;
}else goto main;}
case XCB_MAP_REQUEST:{
void*p=xcb_get_window_attributes_reply(d,xcb_get_window_attributes_unchecked(d,((xcb_map_request_event_t*)e)->window),0);
if(((xcb_get_window_attributes_reply_t*)p)->override_redirect){
free(p);
goto pocus;
}
free(p);
for(;x>cs;x--)
if(*x==((xcb_map_request_event_t*)e)->window)goto noflush;
xcb_map_window(d,*cz++=((xcb_map_request_event_t*)e)->window);
goto hocus;}
case XCB_MOTION_NOTIFY:
*buf=mZ&&((xcb_motion_notify_event_t*)e)->root_x<=mx?:((xcb_motion_notify_event_t*)e)->root_x-mx;
buf[1]=mZ&&((xcb_motion_notify_event_t*)e)->root_y<=my?:((xcb_motion_notify_event_t*)e)->root_y-my;
xcb_configure_window(d,*x,mZ?XCB_CONFIG_WINDOW_WIDTH|XCB_CONFIG_WINDOW_HEIGHT:XCB_CONFIG_WINDOW_X|XCB_CONFIG_WINDOW_Y,buf);
goto main;
case XCB_BUTTON_RELEASE:
xcb_ungrab_pointer(d,XCB_CURRENT_TIME);
goto main;
case XCB_UNMAP_NOTIFY:unmap:goto*(x==cs?&&noflush:*x==((xcb_unmap_notify_event_t*)e)->window&&--cz>cs+1?&&stack:(x--,&&unmap));
}
stack:mx=*x;
for(;x!=y;x+=x<y?:-1)*x=x[x<y?:-1];
*x=mx;
hocus:x=cz-1;
xcb_configure_window(d,*x,XCB_CONFIG_WINDOW_STACK_MODE,di);
pocus:xcb_set_input_focus(d,XCB_INPUT_FOCUS_POINTER_ROOT,*x,XCB_CURRENT_TIME);
if(!(mz&128))goto main;
kcode:switch(mz&=127){
void*p;
case 1:case 3:
p=xcb_grab_pointer_reply(d,xcb_grab_pointer_unchecked(d,0,rt,XCB_EVENT_MASK_BUTTON_RELEASE|XCB_EVENT_MASK_POINTER_MOTION,XCB_GRAB_MODE_ASYNC,XCB_GRAB_MODE_ASYNC,XCB_NONE,XCB_NONE,XCB_CURRENT_TIME),0);
if(((xcb_grab_pointer_reply_t*)p)->status!=XCB_GRAB_STATUS_SUCCESS){
free(p);
goto noflush;
}
free(p);
p=xcb_get_geometry_reply(d,xcb_get_geometry_unchecked(d,*y),0);
mx=((xcb_get_geometry_reply_t*)p)->x;
my=((xcb_get_geometry_reply_t*)p)->y;
free(p);
if(mZ=mz==1){
p=xcb_query_pointer_reply(d,xcb_query_pointer_unchecked(d,rt),0);
mx=((xcb_query_pointer_reply_t*)p)->root_x-mx;
my=((xcb_query_pointer_reply_t*)p)->root_y-my;
free(p);
}
goto noflush;
case 23:case 49:
if(cz-cs<3)goto main;
y=tx;
tx=mz==23?(y!=cs+1?(y?:x)-1:x):!y||y==x?cs+1:y+1;
if(y&&y<cz-1){
*buf=y[mz==23?:-1];
buf[1]=mz==23;
xcb_configure_window(d,*y,XCB_CONFIG_WINDOW_SIBLING|XCB_CONFIG_WINDOW_STACK_MODE,buf);
}
xcb_configure_window(d,*tx,XCB_CONFIG_WINDOW_STACK_MODE,di);
goto main;
case 32:return 0;
case 44:
if(cz>cs+1)xcb_configure_window(d,*y,XCB_CONFIG_WINDOW_X|XCB_CONFIG_WINDOW_Y|XCB_CONFIG_WINDOW_WIDTH|XCB_CONFIG_WINDOW_HEIGHT,di);
goto main;
case 46:
if(cz==cs+1)goto main;
if(tx)goto*(mz|=128,&&xt);
{xcb_intern_atom_cookie_t c1=xcb_intern_atom_unchecked(d,0,12,"WM_PROTOCOLS"),c2=xcb_intern_atom_unchecked(d,0,16,"WM_DELETE_WINDOW");
p=xcb_intern_atom_reply(d,c1,0);
mx=((xcb_intern_atom_reply_t*)p)->atom;
free(p);
p=xcb_intern_atom_reply(d,c2,0);}
my=((xcb_intern_atom_reply_t*)p)->atom;
free(p);
p=xcb_get_property_reply(d,xcb_get_property_unchecked(d,0,*y,mx,XCB_ATOM_ATOM,0,-1),0);
xcb_send_event(d,0,*y,XCB_EVENT_MASK_NO_EVENT,(void*)(xcb_client_message_event_t[]){{.response_type=XCB_CLIENT_MESSAGE,.window=*y,.type=mx,.format=32,.data.data32={my,XCB_CURRENT_TIME}}});
/** Scan X to find windows to manage.
*/
static void
scan(xcb_query_tree_cookie_t tree_c)
{
int i, tree_c_len;
xcb_query_tree_reply_t *tree_r;
xcb_window_t *wins = NULL;
xcb_get_window_attributes_reply_t *attr_r;
xcb_get_geometry_reply_t *geom_r;
long state;
tree_r = xcb_query_tree_reply(globalconf.connection,
tree_c,
NULL);
if(!tree_r)
return;
/* Get the tree of the children windows of the current root window */
if(!(wins = xcb_query_tree_children(tree_r)))
fatal("cannot get tree children");
tree_c_len = xcb_query_tree_children_length(tree_r);
xcb_get_window_attributes_cookie_t attr_wins[tree_c_len];
xcb_get_property_cookie_t state_wins[tree_c_len];
for(i = 0; i < tree_c_len; i++)
{
attr_wins[i] = xcb_get_window_attributes_unchecked(globalconf.connection,
wins[i]);
state_wins[i] = xwindow_get_state_unchecked(wins[i]);
}
xcb_get_geometry_cookie_t *geom_wins[tree_c_len];
for(i = 0; i < tree_c_len; i++)
{
attr_r = xcb_get_window_attributes_reply(globalconf.connection,
attr_wins[i],
NULL);
state = xwindow_get_state_reply(state_wins[i]);
if(!attr_r || attr_r->override_redirect
|| attr_r->map_state == XCB_MAP_STATE_UNMAPPED
|| state == XCB_ICCCM_WM_STATE_WITHDRAWN)
{
geom_wins[i] = NULL;
p_delete(&attr_r);
continue;
}
p_delete(&attr_r);
/* Get the geometry of the current window */
geom_wins[i] = p_alloca(xcb_get_geometry_cookie_t, 1);
*(geom_wins[i]) = xcb_get_geometry_unchecked(globalconf.connection, wins[i]);
}
for(i = 0; i < tree_c_len; i++)
{
if(!geom_wins[i] || !(geom_r = xcb_get_geometry_reply(globalconf.connection,
*(geom_wins[i]), NULL)))
continue;
client_manage(wins[i], geom_r, true);
p_delete(&geom_r);
}
p_delete(&tree_r);
}
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;
}
