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Hyprland/src/xwayland/XWM.cpp

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xwayland: move to hyprland impl (#6086)
2024-05-25 22:43:51 +02:00
#include "helpers/Vector2D.hpp"
#ifndef NO_XWAYLAND
#include "XWayland.hpp"
#include "../defines.hpp"
#include <unordered_map>
#include "../Compositor.hpp"
#include "../protocols/XWaylandShell.hpp"
#include "../managers/SeatManager.hpp"
#include "../protocols/core/Seat.hpp"
#include <ranges>
#include <algorithm>
#include <fcntl.h>
#include <cstring>
#include <xcb/xcb_icccm.h>
#define XCB_EVENT_RESPONSE_TYPE_MASK 0x7f
#define INCR_CHUNK_SIZE (64 * 1024)
static int onX11Event(int fd, uint32_t mask, void* data) {
return g_pXWayland->pWM->onEvent(fd, mask);
}
SP<CXWaylandSurface> CXWM::windowForXID(xcb_window_t wid) {
for (auto& s : surfaces) {
if (s->xID == wid)
return s;
}
return nullptr;
}
void CXWM::handleCreate(xcb_create_notify_event_t* e) {
if (isWMWindow(e->window))
return;
const auto XSURF = surfaces.emplace_back(SP<CXWaylandSurface>(new CXWaylandSurface(e->window, CBox{e->x, e->y, e->width, e->height}, e->override_redirect)));
XSURF->self = XSURF;
Debug::log(LOG, "[xwm] New XSurface at {:x} with xid of {}", (uintptr_t)XSURF.get(), e->window);
const auto WINDOW = CWindow::create(XSURF);
g_pCompositor->m_vWindows.emplace_back(WINDOW);
WINDOW->m_pSelf = WINDOW;
Debug::log(LOG, "[xwm] New XWayland window at {:x} for surf {:x}", (uintptr_t)WINDOW.get(), (uintptr_t)XSURF.get());
}
void CXWM::handleDestroy(xcb_destroy_notify_event_t* e) {
const auto XSURF = windowForXID(e->window);
if (!XSURF)
return;
XSURF->events.destroy.emit();
std::erase_if(surfaces, [XSURF](const auto& other) { return XSURF == other; });
}
void CXWM::handleConfigure(xcb_configure_request_event_t* e) {
const auto XSURF = windowForXID(e->window);
if (!XSURF)
return;
const uint16_t MASK = e->value_mask;
constexpr uint16_t GEOMETRY = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
if (!(MASK & GEOMETRY))
return;
XSURF->events.configure.emit(CBox{MASK & XCB_CONFIG_WINDOW_X ? e->x : XSURF->geometry.x, MASK & XCB_CONFIG_WINDOW_Y ? e->y : XSURF->geometry.y,
MASK & XCB_CONFIG_WINDOW_WIDTH ? e->width : XSURF->geometry.width, MASK & XCB_CONFIG_WINDOW_HEIGHT ? e->height : XSURF->geometry.height});
}
void CXWM::handleConfigureNotify(xcb_configure_notify_event_t* e) {
const auto XSURF = windowForXID(e->window);
if (!XSURF)
return;
if (XSURF->geometry == CBox{e->x, e->y, e->width, e->height})
return;
XSURF->geometry = {e->x, e->y, e->width, e->height};
XSURF->events.setGeometry.emit();
}
void CXWM::handleMapRequest(xcb_map_request_event_t* e) {
const auto XSURF = windowForXID(e->window);
if (!XSURF)
return;
xcb_map_window(connection, e->window);
XSURF->restackToTop();
const bool SMALL =
XSURF->geometry.size() < Vector2D{2, 2} || (XSURF->sizeHints && XSURF->geometry.size() < Vector2D{XSURF->sizeHints->min_width, XSURF->sizeHints->min_height});
const bool HAS_HINTS = XSURF->sizeHints && Vector2D{XSURF->sizeHints->base_width, XSURF->sizeHints->base_height} > Vector2D{5, 5};
const auto DESIREDSIZE = HAS_HINTS ? Vector2D{XSURF->sizeHints->base_width, XSURF->sizeHints->base_height} : Vector2D{800, 800};
// if it's too small, or its base size is set, configure it.
if ((SMALL || HAS_HINTS) && !XSURF->overrideRedirect) // default to 800 x 800
XSURF->configure({XSURF->geometry.pos(), DESIREDSIZE});
Debug::log(LOG, "[xwm] Mapping window {} in X (geometry {}x{} at {}x{}))", e->window, XSURF->geometry.width, XSURF->geometry.height, XSURF->geometry.x, XSURF->geometry.y);
// read data again. Some apps for some reason fail to send WINDOW_TYPE
// this shouldn't happen but does, I prolly fucked up somewhere, this is a band-aid
readWindowData(XSURF);
XSURF->considerMap();
}
void CXWM::handleMapNotify(xcb_map_notify_event_t* e) {
const auto XSURF = windowForXID(e->window);
if (!XSURF || XSURF->overrideRedirect)
return;
XSURF->setWithdrawn(false);
sendState(XSURF);
xcb_flush(connection);
XSURF->considerMap();
}
void CXWM::handleUnmapNotify(xcb_unmap_notify_event_t* e) {
const auto XSURF = windowForXID(e->window);
if (!XSURF)
return;
XSURF->unmap();
dissociate(XSURF);
if (XSURF->overrideRedirect)
return;
XSURF->setWithdrawn(true);
sendState(XSURF);
xcb_flush(connection);
}
static bool lookupParentExists(SP<CXWaylandSurface> XSURF, SP<CXWaylandSurface> prospectiveChild) {
while (XSURF->parent) {
if (XSURF->parent == prospectiveChild)
return true;
XSURF = XSURF->parent.lock();
}
return false;
}
void CXWM::readProp(SP<CXWaylandSurface> XSURF, uint32_t atom, xcb_get_property_reply_t* reply) {
std::string propName = "?";
for (auto& ha : HYPRATOMS) {
if (ha.second != atom)
continue;
propName = ha.first;
break;
}
if (atom == XCB_ATOM_WM_CLASS) {
size_t len = xcb_get_property_value_length(reply);
char* string = (char*)xcb_get_property_value(reply);
XSURF->state.appid = std::string{string, len};
if (std::count(XSURF->state.appid.begin(), XSURF->state.appid.end(), '\000') == 2)
XSURF->state.appid = XSURF->state.appid.substr(XSURF->state.appid.find_first_of('\000') + 1); // fuck you X
if (!XSURF->state.appid.empty())
XSURF->state.appid.pop_back();
XSURF->events.metadataChanged.emit();
} else if (atom == XCB_ATOM_WM_NAME || atom == HYPRATOMS["_NET_WM_NAME"]) {
size_t len = xcb_get_property_value_length(reply);
char* string = (char*)xcb_get_property_value(reply);
XSURF->state.title = std::string{string, len};
XSURF->events.metadataChanged.emit();
} else if (atom == HYPRATOMS["_NET_WM_WINDOW_TYPE"]) {
xcb_atom_t* atomsArr = (xcb_atom_t*)xcb_get_property_value(reply);
size_t atomsNo = reply->value_len;
XSURF->atoms.clear();
for (size_t i = 0; i < atomsNo; ++i) {
XSURF->atoms.push_back(atomsArr[i]);
}
} else if (atom == HYPRATOMS["_NET_WM_STATE"]) {
xcb_atom_t* atoms = (xcb_atom_t*)xcb_get_property_value(reply);
for (uint32_t i = 0; i < reply->value_len; i++) {
if (atoms[i] == HYPRATOMS["_NET_WM_STATE_MODAL"])
XSURF->modal = true;
}
} else if (atom == HYPRATOMS["WM_HINTS"]) {
if (reply->value_len != 0) {
XSURF->hints = std::make_unique<xcb_icccm_wm_hints_t>();
xcb_icccm_get_wm_hints_from_reply(XSURF->hints.get(), reply);
if (!(XSURF->hints->flags & XCB_ICCCM_WM_HINT_INPUT))
XSURF->hints->input = true;
}
} else if (atom == HYPRATOMS["WM_WINDOW_ROLE"]) {
size_t len = xcb_get_property_value_length(reply);
if (len <= 0)
XSURF->role = "";
else {
XSURF->role = std::string{(char*)xcb_get_property_value(reply), len};
XSURF->role = XSURF->role.substr(0, XSURF->role.find_first_of('\000'));
}
} else if (atom == XCB_ATOM_WM_TRANSIENT_FOR) {
if (reply->type == XCB_ATOM_WINDOW) {
const auto XID = (xcb_window_t*)xcb_get_property_value(reply);
XSURF->transient = XID;
if (XID) {
if (const auto NEWXSURF = windowForXID(*XID); !lookupParentExists(XSURF, NEWXSURF)) {
XSURF->parent = NEWXSURF;
NEWXSURF->children.push_back(XSURF);
} else
Debug::log(LOG, "[xwm] Denying transient because it would create a loop");
}
}
} else if (atom == HYPRATOMS["WM_NORMAL_HINTS"]) {
if (reply->type == HYPRATOMS["WM_SIZE_HINTS"] && reply->value_len > 0) {
XSURF->sizeHints = std::make_unique<xcb_size_hints_t>();
std::memset(XSURF->sizeHints.get(), 0, sizeof(xcb_size_hints_t));
xcb_icccm_get_wm_size_hints_from_reply(XSURF->sizeHints.get(), reply);
const int32_t FLAGS = XSURF->sizeHints->flags;
const bool HASMIN = (FLAGS & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE);
const bool HASBASE = (FLAGS & XCB_ICCCM_SIZE_HINT_BASE_SIZE);
if (!HASMIN && !HASBASE) {
XSURF->sizeHints->min_width = -1;
XSURF->sizeHints->min_height = -1;
XSURF->sizeHints->base_width = -1;
XSURF->sizeHints->base_height = -1;
} else if (!HASBASE) {
XSURF->sizeHints->base_width = XSURF->sizeHints->min_width;
XSURF->sizeHints->base_height = XSURF->sizeHints->min_height;
} else if (!HASMIN) {
XSURF->sizeHints->min_width = XSURF->sizeHints->base_width;
XSURF->sizeHints->min_height = XSURF->sizeHints->base_height;
}
if (!(FLAGS & XCB_ICCCM_SIZE_HINT_P_MAX_SIZE)) {
XSURF->sizeHints->max_width = -1;
XSURF->sizeHints->max_height = -1;
}
}
} else {
Debug::log(LOG, "[xwm] Unhandled prop {} -> {}", atom, propName);
return;
}
Debug::log(LOG, "[xwm] Handled prop {} -> {}", atom, propName);
}
void CXWM::handlePropertyNotify(xcb_property_notify_event_t* e) {
const auto XSURF = windowForXID(e->window);
if (!XSURF)
return;
xcb_get_property_cookie_t cookie = xcb_get_property(connection, 0, XSURF->xID, e->atom, XCB_ATOM_ANY, 0, 2048);
xcb_get_property_reply_t* reply = xcb_get_property_reply(connection, cookie, nullptr);
if (!reply) {
Debug::log(ERR, "[xwm] Failed to read property notify cookie");
return;
}
readProp(XSURF, e->atom, reply);
free(reply);
}
void CXWM::handleClientMessage(xcb_client_message_event_t* e) {
const auto XSURF = windowForXID(e->window);
if (!XSURF)
return;
std::string propName = "?";
for (auto& ha : HYPRATOMS) {
if (ha.second != e->type)
continue;
propName = ha.first;
break;
}
if (e->type == HYPRATOMS["WL_SURFACE_ID"]) {
if (XSURF->surface) {
Debug::log(WARN, "[xwm] Re-assignment of WL_SURFACE_ID");
dissociate(XSURF);
}
auto id = e->data.data32[0];
auto resource = wl_client_get_object(g_pXWayland->pServer->xwaylandClient, id);
if (resource) {
auto wlrSurface = wlr_surface_from_resource(resource);
associate(XSURF, wlrSurface);
}
} else if (e->type == HYPRATOMS["WL_SURFACE_SERIAL"]) {
if (XSURF->wlSerial) {
Debug::log(WARN, "[xwm] Re-assignment of WL_SURFACE_SERIAL");
dissociate(XSURF);
}
uint32_t serialLow = e->data.data32[0];
uint32_t serialHigh = e->data.data32[1];
XSURF->wlSerial = ((uint64_t)serialHigh << 32) | serialLow;
Debug::log(LOG, "[xwm] surface {:x} requests serial {:x}", (uintptr_t)XSURF.get(), XSURF->wlSerial);
for (auto& res : shellResources) {
if (!res)
continue;
if (res->serial != XSURF->wlSerial || !XSURF->wlSerial)
continue;
associate(XSURF, res->surface);
break;
}
} else if (e->type == HYPRATOMS["_NET_WM_STATE"]) {
if (e->format == 32) {
uint32_t action = e->data.data32[0];
for (size_t i = 0; i < 2; ++i) {
xcb_atom_t prop = e->data.data32[1 + i];
auto updateState = [XSURF](int action, bool current) -> bool {
switch (action) {
case 0:
/* remove */
return false;
case 1:
/* add */
return true;
case 2:
/* toggle */
return !current;
default: return false;
}
return false;
};
if (prop == HYPRATOMS["_NET_WM_STATE_FULLSCREEN"])
XSURF->state.requestsFullscreen = updateState(action, XSURF->fullscreen);
}
XSURF->events.stateChanged.emit();
}
} else if (e->type == HYPRATOMS["_NET_ACTIVE_WINDOW"]) {
XSURF->events.activate.emit();
} else {
Debug::log(LOG, "[xwm] Unhandled message prop {} -> {}", e->type, propName);
return;
}
Debug::log(LOG, "[xwm] Handled message prop {} -> {}", e->type, propName);
}
void CXWM::handleFocusIn(xcb_focus_in_event_t* e) {
if (e->mode == XCB_NOTIFY_MODE_GRAB || e->mode == XCB_NOTIFY_MODE_UNGRAB || e->detail == XCB_NOTIFY_DETAIL_POINTER)
return;
const auto XSURF = windowForXID(e->event);
if (!XSURF)
return;
if (focusedSurface && focusedSurface->pid == XSURF->pid && e->sequence - lastFocusSeq <= 255)
focusWindow(XSURF);
else
focusWindow(focusedSurface.lock());
}
void CXWM::sendWMMessage(SP<CXWaylandSurface> surf, xcb_client_message_data_t* data, uint32_t mask) {
xcb_client_message_event_t event = {
.response_type = XCB_CLIENT_MESSAGE,
.format = 32,
.sequence = 0,
.window = surf->xID,
.type = HYPRATOMS["WM_PROTOCOLS"],
.data = *data,
};
xcb_send_event(connection, 0, surf->xID, mask, (const char*)&event);
xcb_flush(connection);
}
void CXWM::focusWindow(SP<CXWaylandSurface> surf) {
if (surf == focusedSurface)
return;
auto oldSurf = focusedSurface.lock();
focusedSurface = surf;
if (oldSurf)
sendState(oldSurf);
if (!surf) {
xcb_set_input_focus_checked(connection, XCB_INPUT_FOCUS_POINTER_ROOT, XCB_NONE, XCB_CURRENT_TIME);
return;
}
if (surf->overrideRedirect)
return;
xcb_client_message_data_t msg = {0};
msg.data32[0] = HYPRATOMS["WM_TAKE_FOCUS"];
msg.data32[1] = XCB_TIME_CURRENT_TIME;
if (surf->hints && !surf->hints->input)
sendWMMessage(surf, &msg, XCB_EVENT_MASK_NO_EVENT);
else {
sendWMMessage(surf, &msg, XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT);
xcb_void_cookie_t cookie = xcb_set_input_focus(connection, XCB_INPUT_FOCUS_POINTER_ROOT, surf->xID, XCB_CURRENT_TIME);
lastFocusSeq = cookie.sequence;
}
}
void CXWM::handleError(xcb_value_error_t* e) {
const char* major_name = xcb_errors_get_name_for_major_code(errors, e->major_opcode);
if (!major_name) {
Debug::log(ERR, "xcb error happened, but could not get major name");
return;
}
const char* minor_name = xcb_errors_get_name_for_minor_code(errors, e->major_opcode, e->minor_opcode);
const char* extension;
const char* error_name = xcb_errors_get_name_for_error(errors, e->error_code, &extension);
if (!error_name) {
Debug::log(ERR, "xcb error happened, but could not get error name");
return;
}
Debug::log(ERR, "[xwm] xcb error: {} ({}), code {} ({}), seq {}, val {}", major_name, minor_name ? minor_name : "no minor", error_name, extension ? extension : "no extension",
e->sequence, e->bad_value);
}
void CXWM::selectionSendNotify(xcb_selection_request_event_t* e, bool success) {
xcb_selection_notify_event_t selection_notify = {
.response_type = XCB_SELECTION_NOTIFY,
.sequence = 0,
.time = e->time,
.requestor = e->requestor,
.selection = e->selection,
.target = e->target,
.property = success ? e->property : (uint32_t)XCB_ATOM_NONE,
};
xcb_send_event(connection, 0, e->requestor, XCB_EVENT_MASK_NO_EVENT, (const char*)&selection_notify);
xcb_flush(connection);
}
xcb_atom_t CXWM::mimeToAtom(const std::string& mime) {
if (mime == "text/plain;charset=utf-8")
return HYPRATOMS["UTF8_STRING"];
if (mime == "text/plain")
return HYPRATOMS["TEXT"];
xcb_intern_atom_cookie_t cookie = xcb_intern_atom(connection, 0, mime.length(), mime.c_str());
xcb_intern_atom_reply_t* reply = xcb_intern_atom_reply(connection, cookie, nullptr);
if (!reply)
return XCB_ATOM_NONE;
xcb_atom_t atom = reply->atom;
free(reply);
return atom;
}
std::string CXWM::mimeFromAtom(xcb_atom_t atom) {
if (atom == HYPRATOMS["UTF8_STRING"])
return "text/plain;charset=utf-8";
if (atom == HYPRATOMS["TEXT"])
return "text/plain";
xcb_get_atom_name_cookie_t cookie = xcb_get_atom_name(connection, atom);
xcb_get_atom_name_reply_t* reply = xcb_get_atom_name_reply(connection, cookie, nullptr);
if (!reply)
return "INVALID";
size_t len = xcb_get_atom_name_name_length(reply);
char* buf = xcb_get_atom_name_name(reply); // not a C string
std::string SZNAME{buf, len};
free(reply);
return SZNAME;
}
void CXWM::handleSelectionNotify(xcb_selection_notify_event_t* e) {
Debug::log(LOG, "[xwm] Selection notify for {} prop {} target {}", e->selection, e->property, e->target);
SXSelection& sel = clipboard;
if (e->property == XCB_ATOM_NONE) {
if (sel.transfer) {
Debug::log(ERR, "[xwm] converting selection failed");
sel.transfer.reset();
}
} else if (e->target == HYPRATOMS["TARGETS"]) {
if (!focusedSurface) {
Debug::log(LOG, "[xwm] denying access to write to clipboard because no X client is in focus");
return;
}
setClipboardToWayland(sel);
} else if (sel.transfer)
getTransferData(sel);
}
bool CXWM::handleSelectionPropertyNotify(xcb_property_notify_event_t* e) {
// Debug::log(LOG, "[xwm] Selection property notify for {} target {}", e->atom, e->window);
// Debug::log(ERR, "[xwm] FIXME: CXWM::handleSelectionPropertyNotify stub");
return true;
}
void CXWM::handleSelectionRequest(xcb_selection_request_event_t* e) {
Debug::log(LOG, "[xwm] Selection request for {} prop {} target {} time {} requestor {} selection {}", e->selection, e->property, e->target, e->time, e->requestor,
e->selection);
SXSelection& sel = clipboard;
if (!g_pSeatManager->selection.currentSelection) {
Debug::log(ERR, "[xwm] No selection");
selectionSendNotify(e, false);
return;
}
if (e->selection == HYPRATOMS["CLIPBOARD_MANAGER"]) {
selectionSendNotify(e, true);
return;
}
if (sel.window != e->owner && e->time != XCB_CURRENT_TIME && e->time < sel.timestamp) {
Debug::log(ERR, "[xwm] outdated selection request. Time {} < {}", e->time, sel.timestamp);
selectionSendNotify(e, false);
return;
}
if (!g_pSeatManager->state.keyboardFocusResource || g_pSeatManager->state.keyboardFocusResource->client() != g_pXWayland->pServer->xwaylandClient) {
Debug::log(LOG, "[xwm] Ignoring clipboard access: xwayland not in focus");
selectionSendNotify(e, false);
return;
}
if (e->target == HYPRATOMS["TARGETS"]) {
// send mime types
auto mimes = g_pSeatManager->selection.currentSelection->mimes();
std::vector<xcb_atom_t> atoms;
atoms.push_back(HYPRATOMS["TIMESTAMP"]);
atoms.push_back(HYPRATOMS["TARGETS"]);
for (auto& m : mimes) {
atoms.push_back(mimeToAtom(m));
}
xcb_change_property(connection, XCB_PROP_MODE_REPLACE, e->requestor, e->property, XCB_ATOM_ATOM, 32, atoms.size(), atoms.data());
selectionSendNotify(e, true);
} else if (e->target == HYPRATOMS["TIMESTAMP"]) {
xcb_change_property(connection, XCB_PROP_MODE_REPLACE, e->requestor, e->property, XCB_ATOM_INTEGER, 32, 1, &sel.timestamp);
selectionSendNotify(e, true);
} else if (e->target == HYPRATOMS["DELETE"]) {
selectionSendNotify(e, true);
} else {
std::string mime = mimeFromAtom(e->target);
if (mime == "INVALID") {
Debug::log(LOG, "[xwm] Ignoring clipboard access: invalid mime atom {}", e->target);
selectionSendNotify(e, false);
return;
}
if (!sel.sendData(e, mime)) {
Debug::log(LOG, "[xwm] Failed to send selection :(");
selectionSendNotify(e, false);
return;
}
}
}
bool CXWM::handleSelectionXFixesNotify(xcb_xfixes_selection_notify_event_t* e) {
Debug::log(LOG, "[xwm] Selection xfixes notify for {}", e->selection);
// IMPORTANT: mind the g_pSeatManager below
SXSelection& sel = clipboard;
if (e->owner == XCB_WINDOW_NONE) {
if (sel.owner != sel.window)
g_pSeatManager->setCurrentSelection(nullptr);
sel.owner = 0;
return true;
}
sel.owner = e->owner;
if (sel.owner == sel.window) {
sel.timestamp = e->timestamp;
return true;
}
xcb_convert_selection(connection, sel.window, HYPRATOMS["CLIPBOARD"], HYPRATOMS["TARGETS"], HYPRATOMS["_WL_SELECTION"], e->timestamp);
xcb_flush(connection);
return true;
}
bool CXWM::handleSelectionEvent(xcb_generic_event_t* e) {
switch (e->response_type & XCB_EVENT_RESPONSE_TYPE_MASK) {
case XCB_SELECTION_NOTIFY: {
handleSelectionNotify((xcb_selection_notify_event_t*)e);
return true;
}
case XCB_PROPERTY_NOTIFY: {
return handleSelectionPropertyNotify((xcb_property_notify_event_t*)e);
}
case XCB_SELECTION_REQUEST: {
handleSelectionRequest((xcb_selection_request_event_t*)e);
return true;
}
}
if (e->response_type - xfixes->first_event == XCB_XFIXES_SELECTION_NOTIFY)
return handleSelectionXFixesNotify((xcb_xfixes_selection_notify_event_t*)e);
return 0;
}
int CXWM::onEvent(int fd, uint32_t mask) {
if ((mask & WL_EVENT_HANGUP) || (mask & WL_EVENT_ERROR)) {
Debug::log(ERR, "XWayland has yeeten the xwm off?!");
Debug::log(CRIT, "XWayland has yeeten the xwm off?!");
g_pXWayland->pWM.reset();
g_pXWayland->pServer.reset();
return 0;
}
int count = 0;
while (42069) {
xcb_generic_event_t* event = xcb_poll_for_event(connection);
if (!event)
break;
count++;
if (handleSelectionEvent(event)) {
free(event);
continue;
}
switch (event->response_type & XCB_EVENT_RESPONSE_TYPE_MASK) {
case XCB_CREATE_NOTIFY: handleCreate((xcb_create_notify_event_t*)event); break;
case XCB_DESTROY_NOTIFY: handleDestroy((xcb_destroy_notify_event_t*)event); break;
case XCB_CONFIGURE_REQUEST: handleConfigure((xcb_configure_request_event_t*)event); break;
case XCB_CONFIGURE_NOTIFY: handleConfigureNotify((xcb_configure_notify_event_t*)event); break;
case XCB_MAP_REQUEST: handleMapRequest((xcb_map_request_event_t*)event); break;
case XCB_MAP_NOTIFY: handleMapNotify((xcb_map_notify_event_t*)event); break;
case XCB_UNMAP_NOTIFY: handleUnmapNotify((xcb_unmap_notify_event_t*)event); break;
case XCB_PROPERTY_NOTIFY: handlePropertyNotify((xcb_property_notify_event_t*)event); break;
case XCB_CLIENT_MESSAGE: handleClientMessage((xcb_client_message_event_t*)event); break;
case XCB_FOCUS_IN: handleFocusIn((xcb_focus_in_event_t*)event); break;
case 0: handleError((xcb_value_error_t*)event); break;
default: {
;
}
}
free(event);
}
if (count)
xcb_flush(connection);
return count;
}
void CXWM::gatherResources() {
xcb_prefetch_extension_data(connection, &xcb_xfixes_id);
xcb_prefetch_extension_data(connection, &xcb_composite_id);
xcb_prefetch_extension_data(connection, &xcb_res_id);
for (auto& ATOM : HYPRATOMS) {
xcb_intern_atom_cookie_t cookie = xcb_intern_atom(connection, 0, ATOM.first.length(), ATOM.first.c_str());
xcb_intern_atom_reply_t* reply = xcb_intern_atom_reply(connection, cookie, nullptr);
if (!reply) {
Debug::log(ERR, "[xwm] Atom failed: {}", ATOM.first);
continue;
}
ATOM.second = reply->atom;
free(reply);
}
xfixes = xcb_get_extension_data(connection, &xcb_xfixes_id);
if (!xfixes || !xfixes->present)
Debug::log(WARN, "XFixes not available");
xcb_xfixes_query_version_cookie_t xfixes_cookie;
xcb_xfixes_query_version_reply_t* xfixes_reply;
xfixes_cookie = xcb_xfixes_query_version(connection, XCB_XFIXES_MAJOR_VERSION, XCB_XFIXES_MINOR_VERSION);
xfixes_reply = xcb_xfixes_query_version_reply(connection, xfixes_cookie, NULL);
Debug::log(LOG, "xfixes version: {}.{}", xfixes_reply->major_version, xfixes_reply->minor_version);
xfixesMajor = xfixes_reply->major_version;
free(xfixes_reply);
const xcb_query_extension_reply_t* xresReply1 = xcb_get_extension_data(connection, &xcb_res_id);
if (!xresReply1 || !xresReply1->present)
return;
xcb_res_query_version_cookie_t xres_cookie = xcb_res_query_version(connection, XCB_RES_MAJOR_VERSION, XCB_RES_MINOR_VERSION);
xcb_res_query_version_reply_t* xres_reply = xcb_res_query_version_reply(connection, xres_cookie, NULL);
if (xres_reply == NULL)
return;
Debug::log(LOG, "xres version: {}.{}", xres_reply->server_major, xres_reply->server_minor);
if (xres_reply->server_major > 1 || (xres_reply->server_major == 1 && xres_reply->server_minor >= 2)) {
xres = xresReply1;
}
free(xres_reply);
}
void CXWM::getVisual() {
xcb_depth_iterator_t d_iter;
xcb_visualtype_iterator_t vt_iter;
xcb_visualtype_t* visualtype;
d_iter = xcb_screen_allowed_depths_iterator(screen);
visualtype = NULL;
while (d_iter.rem > 0) {
if (d_iter.data->depth == 32) {
vt_iter = xcb_depth_visuals_iterator(d_iter.data);
visualtype = vt_iter.data;
break;
}
xcb_depth_next(&d_iter);
}
if (visualtype == NULL) {
wlr_log(WLR_DEBUG, "No 32 bit visualtype\n");
return;
}
visual_id = visualtype->visual_id;
colormap = xcb_generate_id(connection);
xcb_create_colormap(connection, XCB_COLORMAP_ALLOC_NONE, colormap, screen->root, visual_id);
}
void CXWM::getRenderFormat() {
xcb_render_query_pict_formats_cookie_t cookie = xcb_render_query_pict_formats(connection);
xcb_render_query_pict_formats_reply_t* reply = xcb_render_query_pict_formats_reply(connection, cookie, NULL);
if (!reply) {
wlr_log(WLR_ERROR, "Did not get any reply from xcb_render_query_pict_formats");
return;
}
xcb_render_pictforminfo_iterator_t iter = xcb_render_query_pict_formats_formats_iterator(reply);
xcb_render_pictforminfo_t* format = NULL;
while (iter.rem > 0) {
if (iter.data->depth == 32) {
format = iter.data;
break;
}
xcb_render_pictforminfo_next(&iter);
}
if (format == NULL) {
wlr_log(WLR_DEBUG, "No 32 bit render format");
free(reply);
return;
}
render_format_id = format->id;
free(reply);
}
CXWM::CXWM() {
connection = xcb_connect_to_fd(g_pXWayland->pServer->xwmFDs[0], nullptr);
if (int ret = xcb_connection_has_error(connection); ret) {
Debug::log(ERR, "[xwm] Couldn't start, error {}", ret);
return;
}
if (xcb_errors_context_new(connection, &errors)) {
Debug::log(ERR, "[xwm] Couldn't allocate errors context");
return;
}
xcb_screen_iterator_t screen_iterator = xcb_setup_roots_iterator(xcb_get_setup(connection));
screen = screen_iterator.data;
eventSource = wl_event_loop_add_fd(g_pCompositor->m_sWLEventLoop, g_pXWayland->pServer->xwmFDs[0], WL_EVENT_READABLE, ::onX11Event, nullptr);
wl_event_source_check(eventSource);
gatherResources();
getVisual();
getRenderFormat();
uint32_t values[] = {
XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT | XCB_EVENT_MASK_PROPERTY_CHANGE,
};
xcb_change_window_attributes(connection, screen->root, XCB_CW_EVENT_MASK, values);
xcb_composite_redirect_subwindows(connection, screen->root, XCB_COMPOSITE_REDIRECT_MANUAL);
xcb_atom_t supported[] = {
HYPRATOMS["_NET_WM_STATE"], HYPRATOMS["_NET_ACTIVE_WINDOW"], HYPRATOMS["_NET_WM_MOVERESIZE"], HYPRATOMS["_NET_WM_STATE_FOCUSED"],
HYPRATOMS["_NET_WM_STATE_MODAL"], HYPRATOMS["_NET_WM_STATE_FULLSCREEN"], HYPRATOMS["_NET_WM_STATE_MAXIMIZED_VERT"], HYPRATOMS["_NET_WM_STATE_MAXIMIZED_HORZ"],
HYPRATOMS["_NET_WM_STATE_HIDDEN"], HYPRATOMS["_NET_CLIENT_LIST"], HYPRATOMS["_NET_CLIENT_LIST_STACKING"],
};
xcb_change_property(connection, XCB_PROP_MODE_REPLACE, screen->root, HYPRATOMS["_NET_SUPPORTED"], XCB_ATOM_ATOM, 32, sizeof(supported) / sizeof(*supported), supported);
xcb_flush(connection);
setActiveWindow(XCB_WINDOW_NONE);
initSelection();
hyprListener_newSurface.initCallback(
&g_pCompositor->m_sWLRCompositor->events.new_surface, [this](void* owner, void* data) { onNewSurface((wlr_surface*)data); }, nullptr, "XWM");
listeners.newXShellSurface = PROTO::xwaylandShell->events.newSurface.registerListener([this](std::any d) { onNewResource(std::any_cast<SP<CXWaylandSurfaceResource>>(d)); });
createWMWindow();
xcb_flush(connection);
}
void CXWM::setActiveWindow(xcb_window_t window) {
xcb_change_property(connection, XCB_PROP_MODE_REPLACE, screen->root, HYPRATOMS["_NET_ACTIVE_WINDOW"], HYPRATOMS["WINDOW"], 32, 1, &window);
}
void CXWM::createWMWindow() {
constexpr const char* wmName = "Hyprland :D";
wmWindow = xcb_generate_id(connection);
xcb_create_window(connection, XCB_COPY_FROM_PARENT, wmWindow, screen->root, 0, 0, 10, 10, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT, screen->root_visual, 0, NULL);
xcb_change_property(connection, XCB_PROP_MODE_REPLACE, wmWindow, HYPRATOMS["_NET_WM_NAME"], HYPRATOMS["UTF8_STRING"],
8, // format
strlen(wmName), wmName);
xcb_change_property(connection, XCB_PROP_MODE_REPLACE, screen->root, HYPRATOMS["_NET_SUPPORTING_WM_CHECK"], XCB_ATOM_WINDOW,
32, // format
1, &wmWindow);
xcb_change_property(connection, XCB_PROP_MODE_REPLACE, wmWindow, HYPRATOMS["_NET_SUPPORTING_WM_CHECK"], XCB_ATOM_WINDOW,
32, // format
1, &wmWindow);
xcb_set_selection_owner(connection, wmWindow, HYPRATOMS["WM_S0"], XCB_CURRENT_TIME);
xcb_set_selection_owner(connection, wmWindow, HYPRATOMS["_NET_WM_CM_S0"], XCB_CURRENT_TIME);
}
void CXWM::activateSurface(SP<CXWaylandSurface> surf) {
if (surf == focusedSurface || (surf && surf->overrideRedirect))
return;
setActiveWindow(surf ? surf->xID : (uint32_t)XCB_WINDOW_NONE);
focusWindow(surf);
xcb_flush(connection);
}
void CXWM::sendState(SP<CXWaylandSurface> surf) {
if (surf->withdrawn) {
xcb_delete_property(connection, surf->xID, HYPRATOMS["_NET_WM_STATE"]);
return;
}
std::vector<uint32_t> props;
if (surf->modal)
props.push_back(HYPRATOMS["_NET_WM_STATE_MODAL"]);
if (surf->fullscreen)
props.push_back(HYPRATOMS["_NET_WM_STATE_FULLSCREEN"]);
if (surf->maximized) {
props.push_back(HYPRATOMS["NET_WM_STATE_MAXIMIZED_VERT"]);
props.push_back(HYPRATOMS["NET_WM_STATE_MAXIMIZED_HORZ"]);
}
if (surf->minimized)
props.push_back(HYPRATOMS["_NET_WM_STATE_HIDDEN"]);
if (surf == focusedSurface)
props.push_back(HYPRATOMS["_NET_WM_STATE_FOCUSED"]);
xcb_change_property(connection, XCB_PROP_MODE_REPLACE, surf->xID, HYPRATOMS["_NET_WM_STATE"], XCB_ATOM_ATOM, 32, props.size(), props.data());
}
void CXWM::onNewSurface(wlr_surface* surf) {
if (wl_resource_get_client(surf->resource) != g_pXWayland->pServer->xwaylandClient)
return;
Debug::log(LOG, "[xwm] New XWayland surface at {:x}", (uintptr_t)surf);
const auto WLID = wl_resource_get_id(surf->resource);
for (auto& sr : surfaces) {
if (sr->surface || sr->wlID != WLID)
continue;
associate(sr, surf);
return;
}
Debug::log(WARN, "[xwm] CXWM::onNewSurface: no matching xwaylandSurface");
}
void CXWM::onNewResource(SP<CXWaylandSurfaceResource> resource) {
Debug::log(LOG, "[xwm] New XWayland resource at {:x}", (uintptr_t)resource.get());
std::erase_if(shellResources, [](const auto& e) { return e.expired(); });
shellResources.push_back(resource);
for (auto& surf : surfaces) {
if (surf->resource || surf->wlSerial != resource->serial)
continue;
associate(surf, resource->surface);
break;
}
}
void CXWM::readWindowData(SP<CXWaylandSurface> surf) {
const std::array<xcb_atom_t, 8> interestingProps = {
XCB_ATOM_WM_CLASS, XCB_ATOM_WM_NAME, XCB_ATOM_WM_TRANSIENT_FOR, HYPRATOMS["WM_HINTS"],
HYPRATOMS["_NET_WM_STATE"], HYPRATOMS["_NET_WM_NAME"], HYPRATOMS["_NET_WM_WINDOW_TYPE"], HYPRATOMS["WM_NORMAL_HINTS"],
};
for (size_t i = 0; i < interestingProps.size(); i++) {
xcb_get_property_cookie_t cookie = xcb_get_property(connection, 0, surf->xID, interestingProps.at(i), XCB_ATOM_ANY, 0, 2048);
xcb_get_property_reply_t* reply = xcb_get_property_reply(connection, cookie, nullptr);
if (!reply) {
Debug::log(ERR, "[xwm] Failed to get window property");
continue;
}
readProp(surf, interestingProps.at(i), reply);
free(reply);
}
}
void CXWM::associate(SP<CXWaylandSurface> surf, wlr_surface* wlSurf) {
if (surf->surface)
return;
auto existing = std::find_if(surfaces.begin(), surfaces.end(), [wlSurf](const auto& e) { return e->surface == wlSurf; });
if (existing != surfaces.end()) {
Debug::log(WARN, "[xwm] associate() called but surface is already associated to {:x}, ignoring...", (uintptr_t)surf.get());
return;
}
surf->surface = wlSurf;
surf->ensureListeners();
readWindowData(surf);
surf->events.resourceChange.emit();
}
void CXWM::dissociate(SP<CXWaylandSurface> surf) {
if (!surf->surface)
return;
if (surf->mapped)
surf->unmap();
surf->surface = nullptr;
surf->events.resourceChange.emit();
Debug::log(LOG, "Dissociate for {:x}", (uintptr_t)surf.get());
}
void CXWM::updateClientList() {
std::erase_if(mappedSurfaces, [](const auto& e) { return e.expired() || !e->mapped; });
std::erase_if(mappedSurfacesStacking, [](const auto& e) { return e.expired() || !e->mapped; });
std::vector<xcb_window_t> windows;
for (auto& m : mappedSurfaces) {
windows.push_back(m->xID);
}
xcb_change_property(connection, XCB_PROP_MODE_REPLACE, screen->root, HYPRATOMS["_NET_CLIENT_LIST"], XCB_ATOM_WINDOW, 32, windows.size(), windows.data());
windows.clear();
for (auto& m : mappedSurfacesStacking) {
windows.push_back(m->xID);
}
xcb_change_property(connection, XCB_PROP_MODE_REPLACE, screen->root, HYPRATOMS["_NET_CLIENT_LIST_STACKING"], XCB_ATOM_WINDOW, 32, windows.size(), windows.data());
}
bool CXWM::isWMWindow(xcb_window_t w) {
return w == wmWindow || w == clipboard.window;
}
void CXWM::initSelection() {
clipboard.window = xcb_generate_id(connection);
uint32_t mask[1] = {XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_PROPERTY_CHANGE};
xcb_create_window(connection, XCB_COPY_FROM_PARENT, clipboard.window, screen->root, 0, 0, 10, 10, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT, screen->root_visual, XCB_CW_EVENT_MASK,
mask);
xcb_set_selection_owner(connection, clipboard.window, HYPRATOMS["CLIPBOARD_MANAGER"], XCB_TIME_CURRENT_TIME);
uint32_t mask2 =
XCB_XFIXES_SELECTION_EVENT_MASK_SET_SELECTION_OWNER | XCB_XFIXES_SELECTION_EVENT_MASK_SELECTION_WINDOW_DESTROY | XCB_XFIXES_SELECTION_EVENT_MASK_SELECTION_CLIENT_CLOSE;
xcb_xfixes_select_selection_input(connection, clipboard.window, HYPRATOMS["CLIPBOARD"], mask2);
clipboard.listeners.setSelection = g_pSeatManager->events.setSelection.registerListener([this](std::any d) { clipboard.onSelection(); });
}
void CXWM::setClipboardToWayland(SXSelection& sel) {
sel.dataSource = makeShared<CXDataSource>(sel);
if (sel.dataSource->mimes().empty()) {
Debug::log(ERR, "[xwm] can't set clipboard: no MIMEs");
sel.dataSource.reset();
}
if (sel.dataSource) {
Debug::log(LOG, "[xwm] X clipboard at {:x} takes clipboard", (uintptr_t)sel.dataSource.get());
g_pSeatManager->setCurrentSelection(sel.dataSource);
}
}
void CXWM::getTransferData(SXSelection& sel) {
Debug::log(LOG, "[xwm] getTransferData");
sel.transfer->getIncomingSelectionProp(true);
if (sel.transfer->propertyReply->type == HYPRATOMS["INCR"]) {
Debug::log(ERR, "[xwm] Transfer is INCR, which we don't support :(");
close(sel.transfer->wlFD);
sel.transfer.reset();
return;
} else {
char* property = (char*)xcb_get_property_value(sel.transfer->propertyReply);
int remainder = xcb_get_property_value_length(sel.transfer->propertyReply) - sel.transfer->propertyStart;
ssize_t len = write(sel.transfer->wlFD, property + sel.transfer->propertyStart, remainder);
if (len == -1) {
Debug::log(ERR, "[xwm] write died in transfer get");
close(sel.transfer->wlFD);
sel.transfer.reset();
return;
}
if (len < remainder) {
sel.transfer->propertyStart += len;
Debug::log(ERR, "[xwm] wl client read partially: len {}", len);
return;
} else {
Debug::log(LOG, "[xwm] cb transfer to wl client complete, read {} bytes", len);
close(sel.transfer->wlFD);
sel.transfer.reset();
}
}
}
void CXWM::setCursor(unsigned char* pixData, uint32_t stride, const Vector2D& size, const Vector2D& hotspot) {
if (!render_format_id) {
Debug::log(ERR, "[xwm] can't set cursor: no render format");
return;
}
if (cursorXID)
xcb_free_cursor(connection, cursorXID);
constexpr int CURSOR_DEPTH = 32;
xcb_pixmap_t pix = xcb_generate_id(connection);
xcb_create_pixmap(connection, CURSOR_DEPTH, pix, screen->root, size.x, size.y);
xcb_render_picture_t pic = xcb_generate_id(connection);
xcb_render_create_picture(connection, pic, pix, render_format_id, 0, 0);
xcb_gcontext_t gc = xcb_generate_id(connection);
xcb_create_gc(connection, gc, pix, 0, NULL);
xcb_put_image(connection, XCB_IMAGE_FORMAT_Z_PIXMAP, pix, gc, size.x, size.y, 0, 0, 0, CURSOR_DEPTH, stride * size.y * sizeof(uint8_t), pixData);
xcb_free_gc(connection, gc);
cursorXID = xcb_generate_id(connection);
xcb_render_create_cursor(connection, cursorXID, pic, hotspot.x, hotspot.y);
xcb_free_pixmap(connection, pix);
xcb_render_free_picture(connection, pic);
uint32_t values[] = {cursorXID};
xcb_change_window_attributes(connection, screen->root, XCB_CW_CURSOR, values);
xcb_flush(connection);
}
void SXSelection::onSelection() {
if (g_pSeatManager->selection.currentSelection && g_pSeatManager->selection.currentSelection->type() == DATA_SOURCE_TYPE_X11)
return;
if (g_pSeatManager->selection.currentSelection) {
xcb_set_selection_owner(g_pXWayland->pWM->connection, g_pXWayland->pWM->clipboard.window, HYPRATOMS["CLIPBOARD"], XCB_TIME_CURRENT_TIME);
xcb_flush(g_pXWayland->pWM->connection);
}
}
int SXSelection::onRead(int fd, uint32_t mask) {
// TODO: support INCR
size_t pre = transfer->data.size();
transfer->data.resize(INCR_CHUNK_SIZE + pre);
auto len = read(fd, transfer->data.data() + pre, INCR_CHUNK_SIZE - 1);
if (len < 0) {
Debug::log(ERR, "[xwm] readDataSource died");
g_pXWayland->pWM->selectionSendNotify(&transfer->request, false);
transfer.reset();
return 0;
}
transfer->data.resize(pre + len);
if (len == 0) {
Debug::log(LOG, "[xwm] Received all the bytes, final length {}", transfer->data.size());
xcb_change_property(g_pXWayland->pWM->connection, XCB_PROP_MODE_REPLACE, transfer->request.requestor, transfer->request.property, transfer->request.target, 8,
transfer->data.size(), transfer->data.data());
xcb_flush(g_pXWayland->pWM->connection);
g_pXWayland->pWM->selectionSendNotify(&transfer->request, true);
transfer.reset();
} else
Debug::log(LOG, "[xwm] Received {} bytes, waiting...", len);
return 1;
}
static int readDataSource(int fd, uint32_t mask, void* data) {
Debug::log(LOG, "[xwm] readDataSource on fd {}", fd);
auto selection = (SXSelection*)data;
return selection->onRead(fd, mask);
}
bool SXSelection::sendData(xcb_selection_request_event_t* e, std::string mime) {
WP<IDataSource> selection = g_pSeatManager->selection.currentSelection;
if (!selection)
return false;
const auto MIMES = selection->mimes();
if (MIMES.empty())
return false;
if (std::find(MIMES.begin(), MIMES.end(), mime) == MIMES.end()) {
Debug::log(ERR, "[xwm] X Client asked for an invalid MIME, sending the first advertised. THIS SHIT MAY BREAK!");
mime = *MIMES.begin();
}
transfer = std::make_unique<SXTransfer>(*this);
transfer->request = *e;
int p[2];
if (pipe(p) == -1) {
Debug::log(ERR, "[xwm] selection: pipe() failed");
return false;
}
fcntl(p[0], F_SETFD, FD_CLOEXEC);
fcntl(p[0], F_SETFL, O_NONBLOCK);
fcntl(p[1], F_SETFD, FD_CLOEXEC);
fcntl(p[1], F_SETFL, O_NONBLOCK);
transfer->wlFD = p[0];
Debug::log(LOG, "[xwm] sending wayland selection to xwayland with mime {}, target {}, fds {} {}", mime, e->target, p[0], p[1]);
selection->send(mime, p[1]);
transfer->eventSource = wl_event_loop_add_fd(g_pCompositor->m_sWLEventLoop, transfer->wlFD, WL_EVENT_READABLE, ::readDataSource, this);
return true;
}
SXTransfer::~SXTransfer() {
if (wlFD)
close(wlFD);
if (eventSource)
wl_event_source_remove(eventSource);
if (incomingWindow)
xcb_destroy_window(g_pXWayland->pWM->connection, incomingWindow);
if (propertyReply)
free(propertyReply);
}
bool SXTransfer::getIncomingSelectionProp(bool erase) {
xcb_get_property_cookie_t cookie = xcb_get_property(g_pXWayland->pWM->connection, erase, incomingWindow, HYPRATOMS["_WL_SELECTION"], XCB_GET_PROPERTY_TYPE_ANY, 0, 0x1fffffff);
propertyStart = 0;
propertyReply = xcb_get_property_reply(g_pXWayland->pWM->connection, cookie, nullptr);
if (!propertyReply) {
Debug::log(ERR, "[SXTransfer] couldn't get a prop reply");
return false;
}
return true;
}
#endif
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