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xwayland/xwm: handle INCR clipboard transfer chunks correctly (#13125)

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Handle XCB_PROPERTY_NEW_VALUE events for incremental selection transfers.
Previously only DELETE was handled, causing INCR transfers to fail after
the first chunk.
This commit is contained in:
Zynix 2026-01-30 17:14:17 +03:00 • committed by GitHub
parent c92fb5e85f
commit b8fc0def97
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1 changed files with 29 additions and 8 deletions
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37
src/xwayland/XWM.cpp
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@ -33,6 +33,8 @@ static int onX11Event(int fd, uint32_t mask, void* data) {
return g_pXWayland->m_wm->onEvent(fd, mask);
}
static int writeDataSource(int fd, uint32_t mask, void* data);
struct SFreeDeleter {
void operator()(void* ptr) const {
std::free(ptr); // NOLINT(cppcoreguidelines-no-malloc)
@ -648,19 +650,33 @@ void CXWM::handleSelectionNotify(xcb_selection_notify_event_t* e) {
}
bool CXWM::handleSelectionPropertyNotify(xcb_property_notify_event_t* e) {
if (e->state != XCB_PROPERTY_DELETE)
return false;
for (auto* sel : {&m_clipboard, &m_primarySelection, &m_dndSelection}) {
auto it = std::ranges::find_if(sel->transfers, [e](const auto& t) { return t->incomingWindow == e->window; });
if (it != sel->transfers.end()) {
if (!(*it)->getIncomingSelectionProp(true)) {
sel->transfers.erase(it);
return false;
if (it == sel->transfers.end())
continue;
auto& transfer = *it;
if (e->state == XCB_PROPERTY_NEW_VALUE) {
if (!transfer->incremental) {
getTransferData(*sel);
return true;
}
if (!transfer->getIncomingSelectionProp(true) || xcb_get_property_value_length(transfer->propertyReply) == 0) {
sel->transfers.erase(it);
return true;
}
int result = sel->onWrite();
if (result == 1 && !transfer->eventSource) {
transfer->eventSource = wl_event_loop_add_fd(g_pCompositor->m_wlEventLoop, transfer->wlFD.get(), WL_EVENT_WRITABLE, ::writeDataSource, sel);
}
} else if (e->state == XCB_PROPERTY_DELETE) {
getTransferData(*sel);
return true;
}
return true;
}
return false;
@ -1620,6 +1636,11 @@ int SXSelection::onWrite() {
free(transfer->propertyReply); // NOLINT(cppcoreguidelines-no-malloc)
transfer->propertyReply = nullptr;
transfer->propertyStart = 0;
if (transfer->eventSource) {
wl_event_source_remove(transfer->eventSource);
transfer->eventSource = nullptr;
}
return 0;
}
}