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fix(connection): Query atoms and extensions once

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This commit is contained in:
Michael Carlberg 2016-11-25 11:42:56 +01:00
parent 20c00936a9
commit 19868041e1
1 changed files with 30 additions and 1 deletions
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31
src/x11/connection.cpp
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@ -16,13 +16,40 @@ di::injector<connection&> configure_connection() {
* Preload required xcb atoms
*/
void connection::preload_atoms() {
for (auto&& a : ATOMS) *a.atom = intern_atom(false, a.len, a.name).atom();
static bool s_atoms_loaded{false};
if (s_atoms_loaded) {
return;
}
vector<xcb_intern_atom_cookie_t> cookies(memory_util::countof(ATOMS));
xcb_intern_atom_reply_t* reply{nullptr};
for (size_t i = 0; i < cookies.size(); i++) {
cookies[i] = xcb_intern_atom_unchecked(*this, false, ATOMS[i].len, ATOMS[i].name);
}
for (size_t i = 0; i < cookies.size(); i++) {
if ((reply = xcb_intern_atom_reply(*this, cookies[i], nullptr)) != nullptr) {
*ATOMS[i].atom = reply->atom;
}
free(reply);
}
s_atoms_loaded = true;
}
/**
* Check if required X extensions are available
*/
void connection::query_extensions() {
static bool s_extensions_loaded{false};
if (s_extensions_loaded) {
return;
}
#ifdef ENABLE_DAMAGE_EXT
damage().query_version(XCB_DAMAGE_MAJOR_VERSION, XCB_DAMAGE_MINOR_VERSION);
if (!extension<xpp::damage::extension>()->present)
@ -38,6 +65,8 @@ void connection::query_extensions() {
if (!extension<xpp::randr::extension>()->present)
throw application_error("Missing X extension: RandR");
#endif
s_extensions_loaded = true;
}
/**