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Convert XQueryTree to XCB 

Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit is contained in:
Uli Schlachter 2018-10-03 15:06:16 +02:00 committed by Yuxuan Shui
parent 6c6156932f
commit 54807342f4
1 changed files with 22 additions and 18 deletions
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40
src/compton.c
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@ -827,27 +827,24 @@ long determine_evmask(session_t *ps, Window wid, win_evmode_t mode) {
win *find_toplevel2(session_t *ps, Window wid) {
// TODO this should probably be an "update tree", then find_toplevel.
// current approach is a bit more "racy"
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
win *w = NULL;
// We traverse through its ancestors to find out the frame
while (wid && wid != ps->root && !(w = find_win(ps, wid))) {
Window troot;
Window parent;
Window *tchildren;
unsigned tnchildren;
xcb_query_tree_reply_t *reply;
// XQueryTree probably fails if you run compton when X is somehow
// xcb_query_tree probably fails if you run compton when X is somehow
// initializing (like add it in .xinitrc). In this case
// just leave it alone.
if (!XQueryTree(ps->dpy, wid, &troot, &parent, &tchildren,
&tnchildren)) {
parent = 0;
reply = xcb_query_tree_reply(c, xcb_query_tree(c, wid), NULL);
if (reply == NULL) {
break;
}
cxfree(tchildren);
wid = reply->parent;
wid = parent;
free(reply);
}
return w;
@ -5413,18 +5410,25 @@ session_init(session_t *ps_old, int argc, char **argv) {
xcb_grab_server(c);
{
Window root_return, parent_return;
Window *children;
unsigned int nchildren;
xcb_window_t *children;
int nchildren;
XQueryTree(ps->dpy, ps->root, &root_return,
&parent_return, &children, &nchildren);
xcb_query_tree_reply_t *reply = xcb_query_tree_reply(c,
xcb_query_tree(c, ps->root), NULL);
for (unsigned i = 0; i < nchildren; i++) {
add_win(ps, children[i], i ? children[i-1] : None);
if (reply) {
children = xcb_query_tree_children(reply);
nchildren = xcb_query_tree_children_length(reply);
} else {
children = NULL;
nchildren = 0;
}
cxfree(children);
for (int i = 0; i < nchildren; i++) {
add_win(ps, children[i], i ? children[i-1] : XCB_NONE);
}
free(reply);
}
if (ps->o.track_focus) {