#ifndef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 200809L
#endif
#include <assert.h>
#include <stdlib.h>
#include <unistd.h>
#include <wlr/config.h>
#include <wlr/types/wlr_compositor.h>
#include <wlr/types/wlr_data_device.h>
#include <wlr/types/wlr_primary_selection.h>
#include <wlr/util/edges.h>
#include <wlr/util/log.h>
#include <wlr/xcursor.h>
#include <wlr/xwayland.h>
#include <xcb/composite.h>
#include <xcb/render.h>
#include <xcb/res.h>
#include <xcb/xfixes.h>
#include "xwayland/xwm.h"
const char *const atom_map[ATOM_LAST] = {
[WL_SURFACE_ID] = "WL_SURFACE_ID",
[WM_DELETE_WINDOW] = "WM_DELETE_WINDOW",
[WM_PROTOCOLS] = "WM_PROTOCOLS",
[WM_HINTS] = "WM_HINTS",
[WM_NORMAL_HINTS] = "WM_NORMAL_HINTS",
[WM_SIZE_HINTS] = "WM_SIZE_HINTS",
[WM_WINDOW_ROLE] = "WM_WINDOW_ROLE",
[MOTIF_WM_HINTS] = "_MOTIF_WM_HINTS",
[UTF8_STRING] = "UTF8_STRING",
[WM_S0] = "WM_S0",
[NET_SUPPORTED] = "_NET_SUPPORTED",
[NET_WM_CM_S0] = "_NET_WM_CM_S0",
[NET_WM_PID] = "_NET_WM_PID",
[NET_WM_NAME] = "_NET_WM_NAME",
[NET_WM_STATE] = "_NET_WM_STATE",
[NET_WM_WINDOW_TYPE] = "_NET_WM_WINDOW_TYPE",
[WM_TAKE_FOCUS] = "WM_TAKE_FOCUS",
[WINDOW] = "WINDOW",
[NET_ACTIVE_WINDOW] = "_NET_ACTIVE_WINDOW",
[NET_WM_MOVERESIZE] = "_NET_WM_MOVERESIZE",
[NET_SUPPORTING_WM_CHECK] = "_NET_SUPPORTING_WM_CHECK",
[NET_WM_STATE_FOCUSED] = "_NET_WM_STATE_FOCUSED",
[NET_WM_STATE_MODAL] = "_NET_WM_STATE_MODAL",
[NET_WM_STATE_FULLSCREEN] = "_NET_WM_STATE_FULLSCREEN",
[NET_WM_STATE_MAXIMIZED_VERT] = "_NET_WM_STATE_MAXIMIZED_VERT",
[NET_WM_STATE_MAXIMIZED_HORZ] = "_NET_WM_STATE_MAXIMIZED_HORZ",
[NET_WM_STATE_HIDDEN] = "_NET_WM_STATE_HIDDEN",
[NET_WM_PING] = "_NET_WM_PING",
[WM_CHANGE_STATE] = "WM_CHANGE_STATE",
[WM_STATE] = "WM_STATE",
[CLIPBOARD] = "CLIPBOARD",
[PRIMARY] = "PRIMARY",
[WL_SELECTION] = "_WL_SELECTION",
[TARGETS] = "TARGETS",
[CLIPBOARD_MANAGER] = "CLIPBOARD_MANAGER",
[INCR] = "INCR",
[TEXT] = "TEXT",
[TIMESTAMP] = "TIMESTAMP",
[DELETE] = "DELETE",
[NET_STARTUP_ID] = "_NET_STARTUP_ID",
[NET_STARTUP_INFO] = "_NET_STARTUP_INFO",
[NET_STARTUP_INFO_BEGIN] = "_NET_STARTUP_INFO_BEGIN",
[NET_WM_WINDOW_TYPE_NORMAL] = "_NET_WM_WINDOW_TYPE_NORMAL",
[NET_WM_WINDOW_TYPE_UTILITY] = "_NET_WM_WINDOW_TYPE_UTILITY",
[NET_WM_WINDOW_TYPE_TOOLTIP] = "_NET_WM_WINDOW_TYPE_TOOLTIP",
[NET_WM_WINDOW_TYPE_DND] = "_NET_WM_WINDOW_TYPE_DND",
[NET_WM_WINDOW_TYPE_DROPDOWN_MENU] = "_NET_WM_WINDOW_TYPE_DROPDOWN_MENU",
[NET_WM_WINDOW_TYPE_POPUP_MENU] = "_NET_WM_WINDOW_TYPE_POPUP_MENU",
[NET_WM_WINDOW_TYPE_COMBO] = "_NET_WM_WINDOW_TYPE_COMBO",
[NET_WM_WINDOW_TYPE_MENU] = "_NET_WM_WINDOW_TYPE_MENU",
[NET_WM_WINDOW_TYPE_NOTIFICATION] = "_NET_WM_WINDOW_TYPE_NOTIFICATION",
[NET_WM_WINDOW_TYPE_SPLASH] = "_NET_WM_WINDOW_TYPE_SPLASH",
[DND_SELECTION] = "XdndSelection",
[DND_AWARE] = "XdndAware",
[DND_STATUS] = "XdndStatus",
[DND_POSITION] = "XdndPosition",
[DND_ENTER] = "XdndEnter",
[DND_LEAVE] = "XdndLeave",
[DND_DROP] = "XdndDrop",
[DND_FINISHED] = "XdndFinished",
[DND_PROXY] = "XdndProxy",
[DND_TYPE_LIST] = "XdndTypeList",
[DND_ACTION_MOVE] = "XdndActionMove",
[DND_ACTION_COPY] = "XdndActionCopy",
[DND_ACTION_ASK] = "XdndActionAsk",
[DND_ACTION_PRIVATE] = "XdndActionPrivate",
[NET_CLIENT_LIST] = "_NET_CLIENT_LIST",
[NET_CLIENT_LIST_STACKING] = "_NET_CLIENT_LIST_STACKING",
};
#define STARTUP_INFO_REMOVE_PREFIX "remove: ID="
struct pending_startup_id {
char *msg;
size_t len;
xcb_window_t window;
struct wl_list link;
};
static const struct wlr_surface_role xwayland_surface_role;
bool wlr_surface_is_xwayland_surface(struct wlr_surface *surface) {
return surface->role == &xwayland_surface_role;
}
struct wlr_xwayland_surface *wlr_xwayland_surface_from_wlr_surface(
struct wlr_surface *surface) {
assert(wlr_surface_is_xwayland_surface(surface));
return (struct wlr_xwayland_surface *)surface->role_data;
}
// TODO: replace this with hash table?
static struct wlr_xwayland_surface *lookup_surface(struct wlr_xwm *xwm,
xcb_window_t window_id) {
struct wlr_xwayland_surface *surface;
wl_list_for_each(surface, &xwm->surfaces, link) {
if (surface->window_id == window_id) {
return surface;
}
}
return NULL;
}
static int xwayland_surface_handle_ping_timeout(void *data) {
struct wlr_xwayland_surface *surface = data;
wl_signal_emit_mutable(&surface->events.ping_timeout, surface);
surface->pinging = false;
return 1;
}
static struct wlr_xwayland_surface *xwayland_surface_create(
struct wlr_xwm *xwm, xcb_window_t window_id, int16_t x, int16_t y,
uint16_t width, uint16_t height, bool override_redirect) {
struct wlr_xwayland_surface *surface =
calloc(1, sizeof(struct wlr_xwayland_surface));
if (!surface) {
wlr_log(WLR_ERROR, "Could not allocate wlr xwayland surface");
return NULL;
}
xcb_get_geometry_cookie_t geometry_cookie =
xcb_get_geometry(xwm->xcb_conn, window_id);
uint32_t values[1];
values[0] =
XCB_EVENT_MASK_FOCUS_CHANGE |
XCB_EVENT_MASK_PROPERTY_CHANGE;
xcb_change_window_attributes(xwm->xcb_conn, window_id,
XCB_CW_EVENT_MASK, values);
surface->xwm = xwm;
surface->window_id = window_id;
surface->x = x;
surface->y = y;
surface->width = width;
surface->height = height;
surface->override_redirect = override_redirect;
wl_list_init(&surface->children);
wl_list_init(&surface->stack_link);
wl_list_init(&surface->parent_link);
wl_list_init(&surface->unpaired_link);
wl_signal_init(&surface->events.destroy);
wl_signal_init(&surface->events.request_configure);
wl_signal_init(&surface->events.request_move);
wl_signal_init(&surface->events.request_resize);
wl_signal_init(&surface->events.request_minimize);
wl_signal_init(&surface->events.request_maximize);
wl_signal_init(&surface->events.request_fullscreen);
wl_signal_init(&surface->events.request_activate);
wl_signal_init(&surface->events.map);
wl_signal_init(&surface->events.unmap);
wl_signal_init(&surface->events.set_class);
wl_signal_init(&surface->events.set_role);
wl_signal_init(&surface->events.set_title);
wl_signal_init(&surface->events.set_parent);
wl_signal_init(&surface->events.set_pid);
wl_signal_init(&surface->events.set_startup_id);
wl_signal_init(&surface->events.set_window_type);
wl_signal_init(&surface->events.set_hints);
wl_signal_init(&surface->events.set_decorations);
wl_signal_init(&surface->events.set_override_redirect);
wl_signal_init(&surface->events.ping_timeout);
wl_signal_init(&surface->events.set_geometry);
xcb_get_geometry_reply_t *geometry_reply =
xcb_get_geometry_reply(xwm->xcb_conn, geometry_cookie, NULL);
if (geometry_reply != NULL) {
surface->has_alpha = geometry_reply->depth == 32;
}
free(geometry_reply);
struct wl_display *display = xwm->xwayland->wl_display;
struct wl_event_loop *loop = wl_display_get_event_loop(display);
surface->ping_timer = wl_event_loop_add_timer(loop,
xwayland_surface_handle_ping_timeout, surface);
if (surface->ping_timer == NULL) {
free(surface);
wlr_log(WLR_ERROR, "Could not add timer to event loop");
return NULL;
}
wl_list_insert(&xwm->surfaces, &surface->link);
wl_signal_emit_mutable(&xwm->xwayland->events.new_surface, surface);
return surface;
}
static void xwm_set_net_active_window(struct wlr_xwm *xwm,
xcb_window_t window) {
xcb_change_property(xwm->xcb_conn, XCB_PROP_MODE_REPLACE,
xwm->screen->root, xwm->atoms[NET_ACTIVE_WINDOW],
xwm->atoms[WINDOW], 32, 1, &window);
}
static void xwm_send_wm_message(struct wlr_xwayland_surface *surface,
xcb_client_message_data_t *data, uint32_t event_mask) {
struct wlr_xwm *xwm = surface->xwm;
xcb_client_message_event_t event = {
.response_type = XCB_CLIENT_MESSAGE,
.format = 32,
.sequence = 0,
.window = surface->window_id,
.type = xwm->atoms[WM_PROTOCOLS],
.data = *data,
};
xcb_send_event(xwm->xcb_conn,
0, // propagate
surface->window_id,
event_mask,
(const char *)&event);
xcb_flush(xwm->xcb_conn);
}
static void xwm_set_net_client_list(struct wlr_xwm *xwm) {
// FIXME: _NET_CLIENT_LIST is expected to be ordered by map time, but the
// order of surfaces in `xwm->surfaces` is by creation time. The order of
// windows _NET_CLIENT_LIST exposed by wlroots is wrong.
size_t mapped_surfaces = 0;
struct wlr_xwayland_surface *surface;
wl_list_for_each(surface, &xwm->surfaces, link) {
if (surface->mapped) {
mapped_surfaces++;
}
}
xcb_window_t *windows = malloc(sizeof(xcb_window_t) * mapped_surfaces);
if (!windows) {
return;
}
size_t index = 0;
wl_list_for_each(surface, &xwm->surfaces, link) {
if (surface->mapped) {
windows[index++] = surface->window_id;
}
}
xcb_change_property(xwm->xcb_conn, XCB_PROP_MODE_REPLACE,
xwm->screen->root, xwm->atoms[NET_CLIENT_LIST],
XCB_ATOM_WINDOW, 32, mapped_surfaces, windows);
free(windows);
}
static void xwm_set_net_client_list_stacking(struct wlr_xwm *xwm) {
size_t num_surfaces = wl_list_length(&xwm->surfaces_in_stack_order);
xcb_window_t *windows = malloc(sizeof(xcb_window_t) * num_surfaces);
if (!windows) {
return;
}
// We store surfaces in top-to-bottom order because this is easier to reason
// about, but _NET_CLIENT_LIST_STACKING is supposed to be in bottom-to-top
// order, so iterate backwards through the list.
size_t i = 0;
struct wlr_xwayland_surface *xsurface;
wl_list_for_each(xsurface, &xwm->surfaces_in_stack_order, stack_link) {
windows[i++] = xsurface->window_id;
}
xcb_change_property(xwm->xcb_conn, XCB_PROP_MODE_REPLACE, xwm->screen->root,
xwm->atoms[NET_CLIENT_LIST_STACKING], XCB_ATOM_WINDOW, 32, num_surfaces,
windows);
free(windows);
}
static void xsurface_set_net_wm_state(struct wlr_xwayland_surface *xsurface);
static void xwm_set_focus_window(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface) {
struct wlr_xwayland_surface *unfocus_surface = xwm->focus_surface;
// We handle cases where focus_surface == xsurface because we
// want to be able to deny FocusIn events.
xwm->focus_surface = xsurface;
if (unfocus_surface) {
xsurface_set_net_wm_state(unfocus_surface);
}
if (!xsurface) {
xcb_set_input_focus_checked(xwm->xcb_conn,
XCB_INPUT_FOCUS_POINTER_ROOT,
XCB_NONE, XCB_CURRENT_TIME);
return;
}
if (xsurface->override_redirect) {
return;
}
xcb_client_message_data_t message_data = { 0 };
message_data.data32[0] = xwm->atoms[WM_TAKE_FOCUS];
message_data.data32[1] = XCB_TIME_CURRENT_TIME;
if (xsurface->hints && !xsurface->hints->input) {
// if the surface doesn't allow the focus request, we will send him
// only the take focus event. It will get the focus by itself.
xwm_send_wm_message(xsurface, &message_data, XCB_EVENT_MASK_NO_EVENT);
} else {
xwm_send_wm_message(xsurface, &message_data, XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT);
xcb_void_cookie_t cookie = xcb_set_input_focus(xwm->xcb_conn,
XCB_INPUT_FOCUS_POINTER_ROOT, xsurface->window_id, XCB_CURRENT_TIME);
xwm->last_focus_seq = cookie.sequence;
}
xsurface_set_net_wm_state(xsurface);
}
static void xwm_surface_activate(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface) {
if (xwm->focus_surface == xsurface ||
(xsurface && xsurface->override_redirect)) {
return;
}
if (xsurface) {
xwm_set_net_active_window(xwm, xsurface->window_id);
} else {
xwm_set_net_active_window(xwm, XCB_WINDOW_NONE);
}
xwm_set_focus_window(xwm, xsurface);
xcb_flush(xwm->xcb_conn);
}
static void xsurface_set_net_wm_state(struct wlr_xwayland_surface *xsurface) {
struct wlr_xwm *xwm = xsurface->xwm;
uint32_t property[6];
size_t i = 0;
if (xsurface->modal) {
property[i++] = xwm->atoms[NET_WM_STATE_MODAL];
}
if (xsurface->fullscreen) {
property[i++] = xwm->atoms[NET_WM_STATE_FULLSCREEN];
}
if (xsurface->maximized_vert) {
property[i++] = xwm->atoms[NET_WM_STATE_MAXIMIZED_VERT];
}
if (xsurface->maximized_horz) {
property[i++] = xwm->atoms[NET_WM_STATE_MAXIMIZED_HORZ];
}
if (xsurface->minimized) {
property[i++] = xwm->atoms[NET_WM_STATE_HIDDEN];
}
if (xsurface == xwm->focus_surface) {
property[i++] = xwm->atoms[NET_WM_STATE_FOCUSED];
}
assert(i <= sizeof(property) / sizeof(property[0]));
xcb_change_property(xwm->xcb_conn,
XCB_PROP_MODE_REPLACE,
xsurface->window_id,
xwm->atoms[NET_WM_STATE],
XCB_ATOM_ATOM,
32, // format
i, property);
}
static void xsurface_unpair(struct wlr_xwayland_surface *surface,
bool destroy_role_object) {
if (surface->mapped) {
wl_signal_emit_mutable(&surface->events.unmap, surface);
surface->mapped = false;
xwm_set_net_client_list(surface->xwm);
}
// Make sure we're not on the unpaired surface list or we
// could be assigned a surface during surface creation that
// was mapped before this unmap request.
wl_list_remove(&surface->unpaired_link);
wl_list_init(&surface->unpaired_link);
surface->surface_id = 0;
if (destroy_role_object && surface->surface != NULL) {
wlr_surface_destroy_role_object(surface->surface);
}
surface->surface = NULL;
}
static void xwayland_surface_destroy(
struct wlr_xwayland_surface *xsurface) {
xsurface_unpair(xsurface, true);
wl_signal_emit_mutable(&xsurface->events.destroy, xsurface);
if (xsurface == xsurface->xwm->focus_surface) {
xwm_surface_activate(xsurface->xwm, NULL);
}
wl_list_remove(&xsurface->link);
wl_list_remove(&xsurface->stack_link);
wl_list_remove(&xsurface->parent_link);
struct wlr_xwayland_surface *child, *next;
wl_list_for_each_safe(child, next, &xsurface->children, parent_link) {
wl_list_remove(&child->parent_link);
wl_list_init(&child->parent_link);
child->parent = NULL;
}
wl_list_remove(&xsurface->unpaired_link);
wl_event_source_remove(xsurface->ping_timer);
free(xsurface->title);
free(xsurface->class);
free(xsurface->instance);
free(xsurface->role);
free(xsurface->window_type);
free(xsurface->protocols);
free(xsurface->startup_id);
free(xsurface->hints);
free(xsurface->size_hints);
free(xsurface);
}
static void read_surface_class(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *surface, xcb_get_property_reply_t *reply) {
if (reply->type != XCB_ATOM_STRING &&
reply->type != xwm->atoms[UTF8_STRING]) {
return;
}
size_t len = xcb_get_property_value_length(reply);
char *class = xcb_get_property_value(reply);
// Unpack two sequentially stored strings: instance, class
size_t instance_len = strnlen(class, len);
free(surface->instance);
if (len > 0 && instance_len < len) {
surface->instance = strndup(class, instance_len);
class += instance_len + 1;
} else {
surface->instance = NULL;
}
free(surface->class);
if (len > 0) {
surface->class = strndup(class, len);
} else {
surface->class = NULL;
}
wl_signal_emit_mutable(&surface->events.set_class, surface);
}
static void read_surface_startup_id(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface,
xcb_get_property_reply_t *reply) {
if (reply->type != XCB_ATOM_STRING &&
reply->type != xwm->atoms[UTF8_STRING]) {
return;
}
size_t len = xcb_get_property_value_length(reply);
char *startup_id = xcb_get_property_value(reply);
free(xsurface->startup_id);
if (len > 0) {
xsurface->startup_id = strndup(startup_id, len);
} else {
xsurface->startup_id = NULL;
}
wlr_log(WLR_DEBUG, "XCB_ATOM_NET_STARTUP_ID: %s",
xsurface->startup_id ? xsurface->startup_id: "(null)");
wl_signal_emit_mutable(&xsurface->events.set_startup_id, xsurface);
}
static void read_surface_role(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface,
xcb_get_property_reply_t *reply) {
if (reply->type != XCB_ATOM_STRING &&
reply->type != xwm->atoms[UTF8_STRING]) {
return;
}
size_t len = xcb_get_property_value_length(reply);
char *role = xcb_get_property_value(reply);
free(xsurface->role);
if (len > 0) {
xsurface->role = strndup(role, len);
} else {
xsurface->role = NULL;
}
wl_signal_emit_mutable(&xsurface->events.set_role, xsurface);
}
static void read_surface_title(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface,
xcb_get_property_reply_t *reply) {
if (reply->type != XCB_ATOM_STRING &&
reply->type != xwm->atoms[UTF8_STRING]) {
return;
}
bool is_utf8 = reply->type == xwm->atoms[UTF8_STRING];
if (!is_utf8 && xsurface->has_utf8_title) {
return;
}
size_t len = xcb_get_property_value_length(reply);
char *title = xcb_get_property_value(reply);
free(xsurface->title);
if (len > 0) {
xsurface->title = strndup(title, len);
} else {
xsurface->title = NULL;
}
xsurface->has_utf8_title = is_utf8;
wl_signal_emit_mutable(&xsurface->events.set_title, xsurface);
}
static bool has_parent(struct wlr_xwayland_surface *parent,
struct wlr_xwayland_surface *child) {
while (parent) {
if (child == parent) {
return true;
}
parent = parent->parent;
}
return false;
}
static void read_surface_parent(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface,
xcb_get_property_reply_t *reply) {
struct wlr_xwayland_surface *found_parent = NULL;
if (reply->type != XCB_ATOM_WINDOW) {
return;
}
xcb_window_t *xid = xcb_get_property_value(reply);
if (xid != NULL) {
found_parent = lookup_surface(xwm, *xid);
if (!has_parent(found_parent, xsurface)) {
xsurface->parent = found_parent;
} else {
wlr_log(WLR_INFO, "%p with %p would create a loop", xsurface,
found_parent);
}
} else {
xsurface->parent = NULL;
}
wl_list_remove(&xsurface->parent_link);
if (xsurface->parent != NULL) {
wl_list_insert(&xsurface->parent->children, &xsurface->parent_link);
} else {
wl_list_init(&xsurface->parent_link);
}
wl_signal_emit_mutable(&xsurface->events.set_parent, xsurface);
}
static void read_surface_client_id(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface) {
xcb_res_client_id_spec_t spec = {
.client = xsurface->window_id,
.mask = XCB_RES_CLIENT_ID_MASK_LOCAL_CLIENT_PID
};
xcb_res_query_client_ids_cookie_t cookie = xcb_res_query_client_ids(
xwm->xcb_conn, 1, &spec);
xcb_res_query_client_ids_reply_t *reply = xcb_res_query_client_ids_reply(
xwm->xcb_conn, cookie, NULL);
if (reply == NULL) {
return;
}
uint32_t *pid = NULL;
xcb_res_client_id_value_iterator_t iter =
xcb_res_query_client_ids_ids_iterator(reply);
while (iter.rem > 0) {
if (iter.data->spec.mask & XCB_RES_CLIENT_ID_MASK_LOCAL_CLIENT_PID &&
xcb_res_client_id_value_value_length(iter.data) > 0) {
pid = xcb_res_client_id_value_value(iter.data);
break;
}
xcb_res_client_id_value_next(&iter);
}
if (pid == NULL) {
free(reply);
return;
}
xsurface->pid = *pid;
wl_signal_emit_mutable(&xsurface->events.set_pid, xsurface);
free(reply);
}
static void read_surface_window_type(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface,
xcb_get_property_reply_t *reply) {
if (reply->type != XCB_ATOM_ATOM) {
return;
}
xcb_atom_t *atoms = xcb_get_property_value(reply);
size_t atoms_len = reply->value_len;
size_t atoms_size = sizeof(xcb_atom_t) * atoms_len;
free(xsurface->window_type);
xsurface->window_type = malloc(atoms_size);
if (xsurface->window_type == NULL) {
return;
}
memcpy(xsurface->window_type, atoms, atoms_size);
xsurface->window_type_len = atoms_len;
wl_signal_emit_mutable(&xsurface->events.set_window_type, xsurface);
}
static void read_surface_protocols(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface,
xcb_get_property_reply_t *reply) {
if (reply->type != XCB_ATOM_ATOM) {
return;
}
xcb_atom_t *atoms = xcb_get_property_value(reply);
size_t atoms_len = reply->value_len;
size_t atoms_size = sizeof(xcb_atom_t) * atoms_len;
free(xsurface->protocols);
xsurface->protocols = malloc(atoms_size);
if (xsurface->protocols == NULL) {
return;
}
memcpy(xsurface->protocols, atoms, atoms_size);
xsurface->protocols_len = atoms_len;
}
static void read_surface_hints(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface,
xcb_get_property_reply_t *reply) {
// According to the docs, reply->type == xwm->atoms[WM_HINTS]
// In practice, reply->type == XCB_ATOM_ATOM
if (reply->value_len == 0) {
return;
}
free(xsurface->hints);
xsurface->hints = calloc(1, sizeof(xcb_icccm_wm_hints_t));
if (xsurface->hints == NULL) {
return;
}
xcb_icccm_get_wm_hints_from_reply(xsurface->hints, reply);
if (!(xsurface->hints->flags & XCB_ICCCM_WM_HINT_INPUT)) {
// The client didn't specify whether it wants input.
// Assume it does.
xsurface->hints->input = true;
}
wl_signal_emit_mutable(&xsurface->events.set_hints, xsurface);
}
static void read_surface_normal_hints(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface,
xcb_get_property_reply_t *reply) {
if (reply->type != xwm->atoms[WM_SIZE_HINTS] || reply->value_len == 0) {
return;
}
free(xsurface->size_hints);
xsurface->size_hints = calloc(1, sizeof(xcb_size_hints_t));
if (xsurface->size_hints == NULL) {
return;
}
xcb_icccm_get_wm_size_hints_from_reply(xsurface->size_hints, reply);
int32_t flags = xsurface->size_hints->flags;
bool has_min_size_hints = (flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE) != 0;
bool has_base_size_hints = (flags & XCB_ICCCM_SIZE_HINT_BASE_SIZE) != 0;
/* ICCCM says that if absent, min size is equal to base size and vice versa */
if (!has_min_size_hints && !has_base_size_hints) {
xsurface->size_hints->min_width = -1;
xsurface->size_hints->min_height = -1;
xsurface->size_hints->base_width = -1;
xsurface->size_hints->base_height = -1;
} else if (!has_base_size_hints) {
xsurface->size_hints->base_width = xsurface->size_hints->min_width;
xsurface->size_hints->base_height = xsurface->size_hints->min_height;
} else if (!has_min_size_hints) {
xsurface->size_hints->min_width = xsurface->size_hints->base_width;
xsurface->size_hints->min_height = xsurface->size_hints->base_height;
}
if ((flags & XCB_ICCCM_SIZE_HINT_P_MAX_SIZE) == 0) {
xsurface->size_hints->max_width = -1;
xsurface->size_hints->max_height = -1;
}
}
#define MWM_HINTS_FLAGS_FIELD 0
#define MWM_HINTS_DECORATIONS_FIELD 2
#define MWM_HINTS_DECORATIONS (1 << 1)
#define MWM_DECOR_ALL (1 << 0)
#define MWM_DECOR_BORDER (1 << 1)
#define MWM_DECOR_TITLE (1 << 3)
static void read_surface_motif_hints(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface,
xcb_get_property_reply_t *reply) {
if (reply->value_len < 5) {
return;
}
uint32_t *motif_hints = xcb_get_property_value(reply);
if (motif_hints[MWM_HINTS_FLAGS_FIELD] & MWM_HINTS_DECORATIONS) {
xsurface->decorations = WLR_XWAYLAND_SURFACE_DECORATIONS_ALL;
uint32_t decorations = motif_hints[MWM_HINTS_DECORATIONS_FIELD];
if ((decorations & MWM_DECOR_ALL) == 0) {
if ((decorations & MWM_DECOR_BORDER) == 0) {
xsurface->decorations |=
WLR_XWAYLAND_SURFACE_DECORATIONS_NO_BORDER;
}
if ((decorations & MWM_DECOR_TITLE) == 0) {
xsurface->decorations |=
WLR_XWAYLAND_SURFACE_DECORATIONS_NO_TITLE;
}
}
wl_signal_emit_mutable(&xsurface->events.set_decorations, xsurface);
}
}
static void read_surface_net_wm_state(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface,
xcb_get_property_reply_t *reply) {
xsurface->fullscreen = 0;
xcb_atom_t *atom = xcb_get_property_value(reply);
for (uint32_t i = 0; i < reply->value_len; i++) {
if (atom[i] == xwm->atoms[NET_WM_STATE_MODAL]) {
xsurface->modal = true;
} else if (atom[i] == xwm->atoms[NET_WM_STATE_FULLSCREEN]) {
xsurface->fullscreen = true;
} else if (atom[i] == xwm->atoms[NET_WM_STATE_MAXIMIZED_VERT]) {
xsurface->maximized_vert = true;
} else if (atom[i] == xwm->atoms[NET_WM_STATE_MAXIMIZED_HORZ]) {
xsurface->maximized_horz = true;
} else if (atom[i] == xwm->atoms[NET_WM_STATE_HIDDEN]) {
xsurface->minimized = true;
}
}
}
char *xwm_get_atom_name(struct wlr_xwm *xwm, xcb_atom_t atom) {
xcb_get_atom_name_cookie_t name_cookie =
xcb_get_atom_name(xwm->xcb_conn, atom);
xcb_get_atom_name_reply_t *name_reply =
xcb_get_atom_name_reply(xwm->xcb_conn, name_cookie, NULL);
if (name_reply == NULL) {
return NULL;
}
size_t len = xcb_get_atom_name_name_length(name_reply);
char *buf = xcb_get_atom_name_name(name_reply); // not a C string
char *name = strndup(buf, len);
free(name_reply);
return name;
}
static void read_surface_property(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface, xcb_atom_t property) {
xcb_get_property_cookie_t cookie = xcb_get_property(xwm->xcb_conn, 0,
xsurface->window_id, property, XCB_ATOM_ANY, 0, 2048);
xcb_get_property_reply_t *reply = xcb_get_property_reply(xwm->xcb_conn,
cookie, NULL);
if (reply == NULL) {
return;
}
if (property == XCB_ATOM_WM_CLASS) {
read_surface_class(xwm, xsurface, reply);
} else if (property == XCB_ATOM_WM_NAME ||
property == xwm->atoms[NET_WM_NAME]) {
read_surface_title(xwm, xsurface, reply);
} else if (property == XCB_ATOM_WM_TRANSIENT_FOR) {
read_surface_parent(xwm, xsurface, reply);
} else if (property == xwm->atoms[NET_WM_PID]) {
// intentionally ignored
} else if (property == xwm->atoms[NET_WM_WINDOW_TYPE]) {
read_surface_window_type(xwm, xsurface, reply);
} else if (property == xwm->atoms[WM_PROTOCOLS]) {
read_surface_protocols(xwm, xsurface, reply);
} else if (property == xwm->atoms[NET_WM_STATE]) {
read_surface_net_wm_state(xwm, xsurface, reply);
} else if (property == xwm->atoms[WM_HINTS]) {
read_surface_hints(xwm, xsurface, reply);
} else if (property == xwm->atoms[WM_NORMAL_HINTS]) {
read_surface_normal_hints(xwm, xsurface, reply);
} else if (property == xwm->atoms[MOTIF_WM_HINTS]) {
read_surface_motif_hints(xwm, xsurface, reply);
} else if (property == xwm->atoms[WM_WINDOW_ROLE]) {
read_surface_role(xwm, xsurface, reply);
} else if (property == xwm->atoms[NET_STARTUP_ID]) {
read_surface_startup_id(xwm, xsurface, reply);
} else {
char *prop_name = xwm_get_atom_name(xwm, property);
wlr_log(WLR_DEBUG, "unhandled X11 property %" PRIu32 " (%s) for window %" PRIu32,
property, prop_name ? prop_name : "(null)", xsurface->window_id);
free(prop_name);
}
free(reply);
}
static void xwayland_surface_role_commit(struct wlr_surface *wlr_surface) {
assert(wlr_surface->role == &xwayland_surface_role);
struct wlr_xwayland_surface *surface = wlr_surface->role_data;
if (!surface->mapped && wlr_surface_has_buffer(surface->surface)) {
surface->mapped = true;
wl_signal_emit_mutable(&surface->events.map, surface);
xwm_set_net_client_list(surface->xwm);
}
}
static void xwayland_surface_role_precommit(struct wlr_surface *wlr_surface,
const struct wlr_surface_state *state) {
assert(wlr_surface->role == &xwayland_surface_role);
struct wlr_xwayland_surface *surface = wlr_surface->role_data;
if (state->committed & WLR_SURFACE_STATE_BUFFER && state->buffer == NULL) {
// This is a NULL commit
if (surface->mapped) {
surface->mapped = false;
wl_signal_emit_mutable(&surface->events.unmap, surface);
xwm_set_net_client_list(surface->xwm);
}
}
}
static void xwayland_surface_role_destroy(struct wlr_surface *wlr_surface) {
assert(wlr_surface->role == &xwayland_surface_role);
struct wlr_xwayland_surface *surface = wlr_surface->role_data;
xsurface_unpair(surface, false);
}
static const struct wlr_surface_role xwayland_surface_role = {
.name = "wlr_xwayland_surface",
.commit = xwayland_surface_role_commit,
.precommit = xwayland_surface_role_precommit,
.destroy = xwayland_surface_role_destroy,
};
static void xwm_map_shell_surface(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface, struct wlr_surface *surface) {
if (!wlr_surface_set_role(surface, &xwayland_surface_role, xsurface,
NULL, 0)) {
wlr_log(WLR_ERROR, "Failed to set xwayland surface role");
return;
}
wl_list_remove(&xsurface->unpaired_link);
wl_list_init(&xsurface->unpaired_link);
xsurface->surface_id = 0;
xsurface->surface = surface;
// read all surface properties
const xcb_atom_t props[] = {
XCB_ATOM_WM_CLASS,
XCB_ATOM_WM_NAME,
XCB_ATOM_WM_TRANSIENT_FOR,
xwm->atoms[WM_PROTOCOLS],
xwm->atoms[WM_HINTS],
xwm->atoms[WM_NORMAL_HINTS],
xwm->atoms[MOTIF_WM_HINTS],
xwm->atoms[NET_STARTUP_ID],
xwm->atoms[NET_WM_STATE],
xwm->atoms[NET_WM_WINDOW_TYPE],
xwm->atoms[NET_WM_NAME],
};
for (size_t i = 0; i < sizeof(props)/sizeof(xcb_atom_t); i++) {
read_surface_property(xwm, xsurface, props[i]);
}
if (xwm->xres) {
read_surface_client_id(xwm, xsurface);
}
}
static void xwm_handle_create_notify(struct wlr_xwm *xwm,
xcb_create_notify_event_t *ev) {
if (ev->window == xwm->window ||
ev->window == xwm->primary_selection.window ||
ev->window == xwm->clipboard_selection.window ||
ev->window == xwm->dnd_selection.window) {
return;
}
xwayland_surface_create(xwm, ev->window, ev->x, ev->y,
ev->width, ev->height, ev->override_redirect);
}
static void xwm_handle_destroy_notify(struct wlr_xwm *xwm,
xcb_destroy_notify_event_t *ev) {
struct wlr_xwayland_surface *xsurface = lookup_surface(xwm, ev->window);
if (xsurface == NULL) {
return;
}
xwayland_surface_destroy(xsurface);
xwm_handle_selection_destroy_notify(xwm, ev);
}
static void xwm_handle_configure_request(struct wlr_xwm *xwm,
xcb_configure_request_event_t *ev) {
struct wlr_xwayland_surface *surface = lookup_surface(xwm, ev->window);
if (surface == NULL) {
return;
}
// TODO: handle ev->{parent,sibling}?
uint16_t mask = ev->value_mask;
uint16_t geo_mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y |
XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
if ((mask & geo_mask) == 0) {
return;
}
struct wlr_xwayland_surface_configure_event wlr_event = {
.surface = surface,
.x = mask & XCB_CONFIG_WINDOW_X ? ev->x : surface->x,
.y = mask & XCB_CONFIG_WINDOW_Y ? ev->y : surface->y,
.width = mask & XCB_CONFIG_WINDOW_WIDTH ? ev->width : surface->width,
.height = mask & XCB_CONFIG_WINDOW_HEIGHT ? ev->height : surface->height,
.mask = mask,
};
wl_signal_emit_mutable(&surface->events.request_configure, &wlr_event);
}
static void xwm_handle_configure_notify(struct wlr_xwm *xwm,
xcb_configure_notify_event_t *ev) {
struct wlr_xwayland_surface *xsurface = lookup_surface(xwm, ev->window);
if (!xsurface) {
return;
}
bool geometry_changed =
(xsurface->x != ev->x || xsurface->y != ev->y ||
xsurface->width != ev->width || xsurface->height != ev->height);
if (geometry_changed) {
xsurface->x = ev->x;
xsurface->y = ev->y;
xsurface->width = ev->width;
xsurface->height = ev->height;
}
if (xsurface->override_redirect != ev->override_redirect) {
xsurface->override_redirect = ev->override_redirect;
wl_signal_emit_mutable(&xsurface->events.set_override_redirect, xsurface);
}
if (geometry_changed) {
wl_signal_emit_mutable(&xsurface->events.set_geometry, NULL);
}
}
static void xsurface_set_wm_state(struct wlr_xwayland_surface *xsurface,
int32_t state) {
struct wlr_xwm *xwm = xsurface->xwm;
uint32_t property[] = { state, XCB_WINDOW_NONE };
xcb_change_property(xwm->xcb_conn,
XCB_PROP_MODE_REPLACE,
xsurface->window_id,
xwm->atoms[WM_STATE],
xwm->atoms[WM_STATE],
32, // format
sizeof(property) / sizeof(property[0]), property);
}
void wlr_xwayland_surface_restack(struct wlr_xwayland_surface *xsurface,
struct wlr_xwayland_surface *sibling, enum xcb_stack_mode_t mode) {
struct wlr_xwm *xwm = xsurface->xwm;
uint32_t values[2];
size_t idx = 0;
uint32_t flags = XCB_CONFIG_WINDOW_STACK_MODE;
if (sibling != NULL) {
values[idx++] = sibling->window_id;
flags |= XCB_CONFIG_WINDOW_SIBLING;
}
values[idx++] = mode;
xcb_configure_window(xwm->xcb_conn, xsurface->window_id, flags, values);
wl_list_remove(&xsurface->stack_link);
struct wl_list *node;
if (mode == XCB_STACK_MODE_ABOVE) {
if (sibling) {
node = &sibling->stack_link;
} else {
node = xwm->surfaces_in_stack_order.prev;
}
} else if (mode == XCB_STACK_MODE_BELOW) {
if (sibling) {
node = sibling->stack_link.prev;
} else {
node = &xwm->surfaces_in_stack_order;
}
} else {
// Not implementing XCB_STACK_MODE_TOP_IF | XCB_STACK_MODE_BOTTOM_IF |
// XCB_STACK_MODE_OPPOSITE.
abort();
}
wl_list_insert(node, &xsurface->stack_link);
xwm_set_net_client_list_stacking(xwm);
xcb_flush(xwm->xcb_conn);
}
static void xwm_handle_map_request(struct wlr_xwm *xwm,
xcb_map_request_event_t *ev) {
struct wlr_xwayland_surface *xsurface = lookup_surface(xwm, ev->window);
if (!xsurface) {
return;
}
xsurface_set_wm_state(xsurface, XCB_ICCCM_WM_STATE_NORMAL);
xsurface_set_net_wm_state(xsurface);
wlr_xwayland_surface_restack(xsurface, NULL, XCB_STACK_MODE_BELOW);
xcb_map_window(xwm->xcb_conn, ev->window);
}
static void xwm_handle_map_notify(struct wlr_xwm *xwm,
xcb_map_notify_event_t *ev) {
struct wlr_xwayland_surface *xsurface = lookup_surface(xwm, ev->window);
if (!xsurface) {
return;
}
if (xsurface->override_redirect != ev->override_redirect) {
xsurface->override_redirect = ev->override_redirect;
wl_signal_emit_mutable(&xsurface->events.set_override_redirect, xsurface);
}
}
static void xwm_handle_unmap_notify(struct wlr_xwm *xwm,
xcb_unmap_notify_event_t *ev) {
struct wlr_xwayland_surface *xsurface = lookup_surface(xwm, ev->window);
if (xsurface == NULL) {
return;
}
xsurface_unpair(xsurface, true);
xsurface_set_wm_state(xsurface, XCB_ICCCM_WM_STATE_WITHDRAWN);
}
static void xwm_handle_property_notify(struct wlr_xwm *xwm,
xcb_property_notify_event_t *ev) {
struct wlr_xwayland_surface *xsurface = lookup_surface(xwm, ev->window);
if (xsurface == NULL) {
return;
}
read_surface_property(xwm, xsurface, ev->atom);
}
static void xwm_handle_surface_id_message(struct wlr_xwm *xwm,
xcb_client_message_event_t *ev) {
struct wlr_xwayland_surface *xsurface = lookup_surface(xwm, ev->window);
if (xsurface == NULL) {
wlr_log(WLR_DEBUG,
"client message WL_SURFACE_ID but no new window %u ?",
ev->window);
return;
}
/* Check if we got notified after wayland surface create event */
uint32_t id = ev->data.data32[0];
struct wl_resource *resource =
wl_client_get_object(xwm->xwayland->server->client, id);
if (resource) {
struct wlr_surface *surface = wlr_surface_from_resource(resource);
xsurface->surface_id = 0;
xwm_map_shell_surface(xwm, xsurface, surface);
} else {
xsurface->surface_id = id;
wl_list_remove(&xsurface->unpaired_link);
wl_list_insert(&xwm->unpaired_surfaces, &xsurface->unpaired_link);
}
}
#define _NET_WM_MOVERESIZE_SIZE_TOPLEFT 0
#define _NET_WM_MOVERESIZE_SIZE_TOP 1
#define _NET_WM_MOVERESIZE_SIZE_TOPRIGHT 2
#define _NET_WM_MOVERESIZE_SIZE_RIGHT 3
#define _NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT 4
#define _NET_WM_MOVERESIZE_SIZE_BOTTOM 5
#define _NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT 6
#define _NET_WM_MOVERESIZE_SIZE_LEFT 7
#define _NET_WM_MOVERESIZE_MOVE 8 // movement only
#define _NET_WM_MOVERESIZE_SIZE_KEYBOARD 9 // size via keyboard
#define _NET_WM_MOVERESIZE_MOVE_KEYBOARD 10 // move via keyboard
#define _NET_WM_MOVERESIZE_CANCEL 11 // cancel operation
static enum wlr_edges net_wm_edges_to_wlr(uint32_t net_wm_edges) {
switch(net_wm_edges) {
case _NET_WM_MOVERESIZE_SIZE_TOPLEFT:
return WLR_EDGE_TOP | WLR_EDGE_LEFT;
case _NET_WM_MOVERESIZE_SIZE_TOP:
return WLR_EDGE_TOP;
case _NET_WM_MOVERESIZE_SIZE_TOPRIGHT:
return WLR_EDGE_TOP | WLR_EDGE_RIGHT;
case _NET_WM_MOVERESIZE_SIZE_RIGHT:
return WLR_EDGE_RIGHT;
case _NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT:
return WLR_EDGE_BOTTOM | WLR_EDGE_RIGHT;
case _NET_WM_MOVERESIZE_SIZE_BOTTOM:
return WLR_EDGE_BOTTOM;
case _NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT:
return WLR_EDGE_BOTTOM | WLR_EDGE_LEFT;
case _NET_WM_MOVERESIZE_SIZE_LEFT:
return WLR_EDGE_LEFT;
default:
return WLR_EDGE_NONE;
}
}
static void xwm_handle_net_wm_moveresize_message(struct wlr_xwm *xwm,
xcb_client_message_event_t *ev) {
struct wlr_xwayland_surface *xsurface = lookup_surface(xwm, ev->window);
if (!xsurface) {
return;
}
// TODO: we should probably add input or seat info to this but we would just
// be guessing
struct wlr_xwayland_resize_event resize_event;
struct wlr_xwayland_move_event move_event;
int detail = ev->data.data32[2];
switch (detail) {
case _NET_WM_MOVERESIZE_MOVE:
move_event.surface = xsurface;
wl_signal_emit_mutable(&xsurface->events.request_move, &move_event);
break;
case _NET_WM_MOVERESIZE_SIZE_TOPLEFT:
case _NET_WM_MOVERESIZE_SIZE_TOP:
case _NET_WM_MOVERESIZE_SIZE_TOPRIGHT:
case _NET_WM_MOVERESIZE_SIZE_RIGHT:
case _NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT:
case _NET_WM_MOVERESIZE_SIZE_BOTTOM:
case _NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT:
case _NET_WM_MOVERESIZE_SIZE_LEFT:
resize_event.surface = xsurface;
resize_event.edges = net_wm_edges_to_wlr(detail);
wl_signal_emit_mutable(&xsurface->events.request_resize, &resize_event);
break;
case _NET_WM_MOVERESIZE_CANCEL:
// handled by the compositor
break;
}
}
#define _NET_WM_STATE_REMOVE 0
#define _NET_WM_STATE_ADD 1
#define _NET_WM_STATE_TOGGLE 2
static bool update_state(int action, bool *state) {
int new_state, changed;
switch (action) {
case _NET_WM_STATE_REMOVE:
new_state = false;
break;
case _NET_WM_STATE_ADD:
new_state = true;
break;
case _NET_WM_STATE_TOGGLE:
new_state = !*state;
break;
default:
return false;
}
changed = (*state != new_state);
*state = new_state;
return changed;
}
static bool xsurface_is_maximized(
struct wlr_xwayland_surface *xsurface) {
return xsurface->maximized_horz && xsurface->maximized_vert;
}
static void xwm_handle_net_wm_state_message(struct wlr_xwm *xwm,
xcb_client_message_event_t *client_message) {
struct wlr_xwayland_surface *xsurface =
lookup_surface(xwm, client_message->window);
if (!xsurface) {
return;
}
if (client_message->format != 32) {
return;
}
bool fullscreen = xsurface->fullscreen;
bool maximized = xsurface_is_maximized(xsurface);
bool minimized = xsurface->minimized;
uint32_t action = client_message->data.data32[0];
for (size_t i = 0; i < 2; ++i) {
xcb_atom_t property = client_message->data.data32[1 + i];
bool changed = false;
if (property == xwm->atoms[NET_WM_STATE_MODAL]) {
changed = update_state(action, &xsurface->modal);
} else if (property == xwm->atoms[NET_WM_STATE_FULLSCREEN]) {
changed = update_state(action, &xsurface->fullscreen);
} else if (property == xwm->atoms[NET_WM_STATE_MAXIMIZED_VERT]) {
changed = update_state(action, &xsurface->maximized_vert);
} else if (property == xwm->atoms[NET_WM_STATE_MAXIMIZED_HORZ]) {
changed = update_state(action, &xsurface->maximized_horz);
} else if (property == xwm->atoms[NET_WM_STATE_HIDDEN]) {
changed = update_state(action, &xsurface->minimized);
} else if (property != XCB_ATOM_NONE) {
char *prop_name = xwm_get_atom_name(xwm, property);
wlr_log(WLR_DEBUG, "Unhandled NET_WM_STATE property change "
"%"PRIu32" (%s)", property, prop_name ? prop_name : "(null)");
free(prop_name);
}
if (changed) {
xsurface_set_net_wm_state(xsurface);
}
}
// client_message->data.data32[3] is the source indication
// all other values are set to 0
if (fullscreen != xsurface->fullscreen) {
if (xsurface->fullscreen) {
xsurface->saved_width = xsurface->width;
xsurface->saved_height = xsurface->height;
}
wl_signal_emit_mutable(&xsurface->events.request_fullscreen, xsurface);
}
if (maximized != xsurface_is_maximized(xsurface)) {
if (xsurface_is_maximized(xsurface)) {
xsurface->saved_width = xsurface->width;
xsurface->saved_height = xsurface->height;
}
wl_signal_emit_mutable(&xsurface->events.request_maximize, xsurface);
}
if (minimized != xsurface->minimized) {
if (xsurface->minimized) {
xsurface->saved_width = xsurface->width;
xsurface->saved_height = xsurface->height;
}
struct wlr_xwayland_minimize_event minimize_event = {
.surface = xsurface,
.minimize = xsurface->minimized,
};
wl_signal_emit_mutable(&xsurface->events.request_minimize, &minimize_event);
}
}
static void xwm_handle_wm_protocols_message(struct wlr_xwm *xwm,
xcb_client_message_event_t *ev) {
xcb_atom_t type = ev->data.data32[0];
if (type == xwm->atoms[NET_WM_PING]) {
xcb_window_t window_id = ev->data.data32[2];
struct wlr_xwayland_surface *surface = lookup_surface(xwm, window_id);
if (surface == NULL) {
return;
}
if (!surface->pinging) {
return;
}
wl_event_source_timer_update(surface->ping_timer, 0);
surface->pinging = false;
} else {
char *type_name = xwm_get_atom_name(xwm, type);
wlr_log(WLR_DEBUG, "unhandled WM_PROTOCOLS client message %" PRIu32 " (%s)",
type, type_name ? type_name : "(null)");
free(type_name);
}
}
static void xwm_handle_net_active_window_message(struct wlr_xwm *xwm,
xcb_client_message_event_t *ev) {
struct wlr_xwayland_surface *surface = lookup_surface(xwm, ev->window);
if (surface == NULL) {
return;
}
wl_signal_emit_mutable(&surface->events.request_activate, surface);
}
static void pending_startup_id_destroy(struct pending_startup_id *pending) {
wl_list_remove(&pending->link);
free(pending->msg);
free(pending);
}
static void xwm_handle_net_startup_info_message(struct wlr_xwm *xwm,
xcb_client_message_event_t *ev) {
struct pending_startup_id *pending, *curr = NULL;
wl_list_for_each(pending, &xwm->pending_startup_ids, link) {
if (pending->window == ev->window) {
curr = pending;
break;
}
}
char *start;
size_t buf_len = sizeof(ev->data);
if (curr) {
curr->msg = realloc(curr->msg, curr->len + buf_len);
if (!curr->msg) {
pending_startup_id_destroy(curr);
return;
}
start = curr->msg + curr->len;
curr->len += buf_len;
} else {
curr = calloc(1, sizeof(struct pending_startup_id));
if (!curr)
return;
curr->window = ev->window;
curr->msg = malloc(buf_len);
if (!curr->msg) {
free(curr);
return;
}
start = curr->msg;
curr->len = buf_len;
wl_list_insert(&xwm->pending_startup_ids, &curr->link);
}
char *id = NULL;
const char *data = (const char *)ev->data.data8;
for (size_t i = 0; i < buf_len; i++) {
start[i] = data[i];
if (start[i] == '\0') {
if (strncmp(curr->msg, STARTUP_INFO_REMOVE_PREFIX,
strlen(STARTUP_INFO_REMOVE_PREFIX)) == 0 &&
strlen(curr->msg) > strlen(STARTUP_INFO_REMOVE_PREFIX)) {
id = curr->msg + strlen(STARTUP_INFO_REMOVE_PREFIX);
break;
} else {
wlr_log(WLR_ERROR, "Unhandled message '%s'\n", curr->msg);
pending_startup_id_destroy(curr);
return;
}
}
}
if (id) {
struct wlr_xwayland_remove_startup_info_event data = { id, ev->window };
wlr_log(WLR_DEBUG, "Got startup id: %s", id);
wl_signal_emit_mutable(&xwm->xwayland->events.remove_startup_info, &data);
pending_startup_id_destroy(curr);
}
}
static void xwm_handle_wm_change_state_message(struct wlr_xwm *xwm,
xcb_client_message_event_t *ev) {
struct wlr_xwayland_surface *xsurface = lookup_surface(xwm, ev->window);
uint32_t detail = ev->data.data32[0];
if (xsurface == NULL) {
return;
}
bool minimize;
if (detail == XCB_ICCCM_WM_STATE_ICONIC) {
minimize = true;
} else if (detail == XCB_ICCCM_WM_STATE_NORMAL) {
minimize = false;
} else {
wlr_log(WLR_DEBUG, "unhandled wm_change_state event %u", detail);
return;
}
struct wlr_xwayland_minimize_event minimize_event = {
.surface = xsurface,
.minimize = minimize,
};
wl_signal_emit_mutable(&xsurface->events.request_minimize, &minimize_event);
}
static void xwm_handle_client_message(struct wlr_xwm *xwm,
xcb_client_message_event_t *ev) {
if (ev->type == xwm->atoms[WL_SURFACE_ID]) {
xwm_handle_surface_id_message(xwm, ev);
} else if (ev->type == xwm->atoms[NET_WM_STATE]) {
xwm_handle_net_wm_state_message(xwm, ev);
} else if (ev->type == xwm->atoms[NET_WM_MOVERESIZE]) {
xwm_handle_net_wm_moveresize_message(xwm, ev);
} else if (ev->type == xwm->atoms[WM_PROTOCOLS]) {
xwm_handle_wm_protocols_message(xwm, ev);
} else if (ev->type == xwm->atoms[NET_ACTIVE_WINDOW]) {
xwm_handle_net_active_window_message(xwm, ev);
} else if (ev->type == xwm->atoms[NET_STARTUP_INFO] ||
ev->type == xwm->atoms[NET_STARTUP_INFO_BEGIN]) {
xwm_handle_net_startup_info_message(xwm, ev);
} else if (ev->type == xwm->atoms[WM_CHANGE_STATE]) {
xwm_handle_wm_change_state_message(xwm, ev);
} else if (!xwm_handle_selection_client_message(xwm, ev)) {
char *type_name = xwm_get_atom_name(xwm, ev->type);
wlr_log(WLR_DEBUG, "unhandled x11 client message %" PRIu32 " (%s)", ev->type,
type_name ? type_name : "(null)");
free(type_name);
}
}
static bool validate_focus_serial(uint16_t last_focus_seq, uint16_t event_seq) {
uint16_t rev_dist = event_seq - last_focus_seq;
if (rev_dist >= UINT16_MAX / 2) {
// Probably overflow or too old
return false;
}
return true;
}
static void xwm_handle_focus_in(struct wlr_xwm *xwm,
xcb_focus_in_event_t *ev) {
// Do not interfere with grabs
if (ev->mode == XCB_NOTIFY_MODE_GRAB ||
ev->mode == XCB_NOTIFY_MODE_UNGRAB) {
return;
}
// Ignore pointer focus change events
if (ev->detail == XCB_NOTIFY_DETAIL_POINTER) {
return;
}
// Do not let X clients change the focus behind the compositor's
// back. Reset the focus to the old one if it changed.
//
// Note: Some applications rely on being able to change focus, for ex. Steam:
// https://github.com/swaywm/sway/issues/1865
// Because of that, we allow changing focus between surfaces belonging to the
// same application. We must be careful to ignore requests that are too old
// though, because otherwise it may lead to race conditions:
// https://github.com/swaywm/wlroots/issues/2324
struct wlr_xwayland_surface *requested_focus = lookup_surface(xwm, ev->event);
if (xwm->focus_surface && requested_focus &&
requested_focus->pid == xwm->focus_surface->pid &&
validate_focus_serial(xwm->last_focus_seq, ev->sequence)) {
xwm_set_focus_window(xwm, requested_focus);
} else {
xwm_set_focus_window(xwm, xwm->focus_surface);
}
}
static void xwm_handle_xcb_error(struct wlr_xwm *xwm, xcb_value_error_t *ev) {
#if HAS_XCB_ERRORS
const char *major_name =
xcb_errors_get_name_for_major_code(xwm->errors_context,
ev->major_opcode);
if (!major_name) {
wlr_log(WLR_DEBUG, "xcb error happened, but could not get major name");
goto log_raw;
}
const char *minor_name =
xcb_errors_get_name_for_minor_code(xwm->errors_context,
ev->major_opcode, ev->minor_opcode);
const char *extension;
const char *error_name =
xcb_errors_get_name_for_error(xwm->errors_context,
ev->error_code, &extension);
if (!error_name) {
wlr_log(WLR_DEBUG, "xcb error happened, but could not get error name");
goto log_raw;
}
wlr_log(WLR_ERROR, "xcb error: op %s (%s), code %s (%s), sequence %"PRIu16", value %"PRIu32,
major_name, minor_name ? minor_name : "no minor",
error_name, extension ? extension : "no extension",
ev->sequence, ev->bad_value);
return;
log_raw:
#endif
wlr_log(WLR_ERROR,
"xcb error: op %"PRIu8":%"PRIu16", code %"PRIu8", sequence %"PRIu16", value %"PRIu32,
ev->major_opcode, ev->minor_opcode, ev->error_code,
ev->sequence, ev->bad_value);
}
static void xwm_handle_unhandled_event(struct wlr_xwm *xwm, xcb_generic_event_t *ev) {
#if HAS_XCB_ERRORS
const char *extension;
const char *event_name =
xcb_errors_get_name_for_xcb_event(xwm->errors_context,
ev, &extension);
if (!event_name) {
wlr_log(WLR_DEBUG, "no name for unhandled event: %u",
ev->response_type);
return;
}
wlr_log(WLR_DEBUG, "unhandled X11 event: %s (%u)", event_name, ev->response_type);
#else
wlr_log(WLR_DEBUG, "unhandled X11 event: %u", ev->response_type);
#endif
}
static int x11_event_handler(int fd, uint32_t mask, void *data) {
int count = 0;
xcb_generic_event_t *event;
struct wlr_xwm *xwm = data;
if ((mask & WL_EVENT_HANGUP) || (mask & WL_EVENT_ERROR)) {
xwm_destroy(xwm);
return 0;
}
while ((event = xcb_poll_for_event(xwm->xcb_conn))) {
count++;
if (xwm->xwayland->user_event_handler &&
xwm->xwayland->user_event_handler(xwm, event)) {
break;
}
if (xwm_handle_selection_event(xwm, event)) {
free(event);
continue;
}
switch (event->response_type & XCB_EVENT_RESPONSE_TYPE_MASK) {
case XCB_CREATE_NOTIFY:
xwm_handle_create_notify(xwm, (xcb_create_notify_event_t *)event);
break;
case XCB_DESTROY_NOTIFY:
xwm_handle_destroy_notify(xwm, (xcb_destroy_notify_event_t *)event);
break;
case XCB_CONFIGURE_REQUEST:
xwm_handle_configure_request(xwm,
(xcb_configure_request_event_t *)event);
break;
case XCB_CONFIGURE_NOTIFY:
xwm_handle_configure_notify(xwm,
(xcb_configure_notify_event_t *)event);
break;
case XCB_MAP_REQUEST:
xwm_handle_map_request(xwm, (xcb_map_request_event_t *)event);
break;
case XCB_MAP_NOTIFY:
xwm_handle_map_notify(xwm, (xcb_map_notify_event_t *)event);
break;
case XCB_UNMAP_NOTIFY:
xwm_handle_unmap_notify(xwm, (xcb_unmap_notify_event_t *)event);
break;
case XCB_PROPERTY_NOTIFY:
xwm_handle_property_notify(xwm,
(xcb_property_notify_event_t *)event);
break;
case XCB_CLIENT_MESSAGE:
xwm_handle_client_message(xwm, (xcb_client_message_event_t *)event);
break;
case XCB_FOCUS_IN:
xwm_handle_focus_in(xwm, (xcb_focus_in_event_t *)event);
break;
case 0:
xwm_handle_xcb_error(xwm, (xcb_value_error_t *)event);
break;
default:
xwm_handle_unhandled_event(xwm, event);
break;
}
free(event);
}
if (count) {
xcb_flush(xwm->xcb_conn);
}
return count;
}
static void handle_compositor_new_surface(struct wl_listener *listener,
void *data) {
struct wlr_xwm *xwm =
wl_container_of(listener, xwm, compositor_new_surface);
struct wlr_surface *surface = data;
struct wl_client *client = wl_resource_get_client(surface->resource);
if (client != xwm->xwayland->server->client) {
return;
}
wlr_log(WLR_DEBUG, "New xwayland surface: %p", surface);
uint32_t surface_id = wl_resource_get_id(surface->resource);
struct wlr_xwayland_surface *xsurface;
wl_list_for_each(xsurface, &xwm->unpaired_surfaces, unpaired_link) {
if (xsurface->surface_id == surface_id) {
xwm_map_shell_surface(xwm, xsurface, surface);
xcb_flush(xwm->xcb_conn);
return;
}
}
}
static void handle_compositor_destroy(struct wl_listener *listener,
void *data) {
struct wlr_xwm *xwm =
wl_container_of(listener, xwm, compositor_destroy);
wl_list_remove(&xwm->compositor_new_surface.link);
wl_list_remove(&xwm->compositor_destroy.link);
wl_list_init(&xwm->compositor_new_surface.link);
wl_list_init(&xwm->compositor_destroy.link);
}
void wlr_xwayland_surface_activate(struct wlr_xwayland_surface *xsurface,
bool activated) {
struct wlr_xwayland_surface *focused = xsurface->xwm->focus_surface;
if (activated) {
xwm_surface_activate(xsurface->xwm, xsurface);
} else if (focused == xsurface) {
xwm_surface_activate(xsurface->xwm, NULL);
}
}
void wlr_xwayland_surface_configure(struct wlr_xwayland_surface *xsurface,
int16_t x, int16_t y, uint16_t width, uint16_t height) {
xsurface->x = x;
xsurface->y = y;
xsurface->width = width;
xsurface->height = height;
struct wlr_xwm *xwm = xsurface->xwm;
uint32_t mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y |
XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT |
XCB_CONFIG_WINDOW_BORDER_WIDTH;
uint32_t values[] = {x, y, width, height, 0};
xcb_configure_window(xwm->xcb_conn, xsurface->window_id, mask, values);
xcb_flush(xwm->xcb_conn);
}
void wlr_xwayland_surface_close(struct wlr_xwayland_surface *xsurface) {
struct wlr_xwm *xwm = xsurface->xwm;
bool supports_delete = false;
for (size_t i = 0; i < xsurface->protocols_len; i++) {
if (xsurface->protocols[i] == xwm->atoms[WM_DELETE_WINDOW]) {
supports_delete = true;
break;
}
}
if (supports_delete) {
xcb_client_message_data_t message_data = {0};
message_data.data32[0] = xwm->atoms[WM_DELETE_WINDOW];
message_data.data32[1] = XCB_CURRENT_TIME;
xwm_send_wm_message(xsurface, &message_data, XCB_EVENT_MASK_NO_EVENT);
} else {
xcb_kill_client(xwm->xcb_conn, xsurface->window_id);
xcb_flush(xwm->xcb_conn);
}
}
void xwm_destroy(struct wlr_xwm *xwm) {
if (!xwm) {
return;
}
xwm_selection_finish(&xwm->clipboard_selection);
xwm_selection_finish(&xwm->primary_selection);
xwm_selection_finish(&xwm->dnd_selection);
if (xwm->seat) {
if (xwm->seat->selection_source &&
data_source_is_xwayland(xwm->seat->selection_source)) {
wlr_seat_set_selection(xwm->seat, NULL,
wl_display_next_serial(xwm->xwayland->wl_display));
}
if (xwm->seat->primary_selection_source &&
primary_selection_source_is_xwayland(
xwm->seat->primary_selection_source)) {
wlr_seat_set_primary_selection(xwm->seat, NULL,
wl_display_next_serial(xwm->xwayland->wl_display));
}
wlr_xwayland_set_seat(xwm->xwayland, NULL);
}
if (xwm->cursor) {
xcb_free_cursor(xwm->xcb_conn, xwm->cursor);
}
if (xwm->colormap) {
xcb_free_colormap(xwm->xcb_conn, xwm->colormap);
}
if (xwm->window) {
xcb_destroy_window(xwm->xcb_conn, xwm->window);
}
if (xwm->event_source) {
wl_event_source_remove(xwm->event_source);
}
#if HAS_XCB_ERRORS
if (xwm->errors_context) {
xcb_errors_context_free(xwm->errors_context);
}
#endif
struct wlr_xwayland_surface *xsurface, *tmp;
wl_list_for_each_safe(xsurface, tmp, &xwm->surfaces, link) {
xwayland_surface_destroy(xsurface);
}
wl_list_for_each_safe(xsurface, tmp, &xwm->unpaired_surfaces, unpaired_link) {
xwayland_surface_destroy(xsurface);
}
wl_list_remove(&xwm->compositor_new_surface.link);
wl_list_remove(&xwm->compositor_destroy.link);
xcb_disconnect(xwm->xcb_conn);
struct pending_startup_id *pending, *next;
wl_list_for_each_safe(pending, next, &xwm->pending_startup_ids, link) {
pending_startup_id_destroy(pending);
}
xwm->xwayland->xwm = NULL;
free(xwm);
}
static void xwm_get_resources(struct wlr_xwm *xwm) {
xcb_prefetch_extension_data(xwm->xcb_conn, &xcb_xfixes_id);
xcb_prefetch_extension_data(xwm->xcb_conn, &xcb_composite_id);
xcb_prefetch_extension_data(xwm->xcb_conn, &xcb_res_id);
size_t i;
xcb_intern_atom_cookie_t cookies[ATOM_LAST];
for (i = 0; i < ATOM_LAST; i++) {
cookies[i] =
xcb_intern_atom(xwm->xcb_conn, 0, strlen(atom_map[i]), atom_map[i]);
}
for (i = 0; i < ATOM_LAST; i++) {
xcb_generic_error_t *error;
xcb_intern_atom_reply_t *reply =
xcb_intern_atom_reply(xwm->xcb_conn, cookies[i], &error);
if (reply && !error) {
xwm->atoms[i] = reply->atom;
}
free(reply);
if (error) {
wlr_log(WLR_ERROR, "could not resolve atom %s, x11 error code %d",
atom_map[i], error->error_code);
free(error);
return;
}
}
xwm->xfixes = xcb_get_extension_data(xwm->xcb_conn, &xcb_xfixes_id);
if (!xwm->xfixes || !xwm->xfixes->present) {
wlr_log(WLR_DEBUG, "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(xwm->xcb_conn, XCB_XFIXES_MAJOR_VERSION,
XCB_XFIXES_MINOR_VERSION);
xfixes_reply =
xcb_xfixes_query_version_reply(xwm->xcb_conn, xfixes_cookie, NULL);
wlr_log(WLR_DEBUG, "xfixes version: %" PRIu32 ".%" PRIu32,
xfixes_reply->major_version, xfixes_reply->minor_version);
xwm->xfixes_major_version = xfixes_reply->major_version;
free(xfixes_reply);
const xcb_query_extension_reply_t *xres =
xcb_get_extension_data(xwm->xcb_conn, &xcb_res_id);
if (!xres || !xres->present) {
return;
}
xcb_res_query_version_cookie_t xres_cookie =
xcb_res_query_version(xwm->xcb_conn, XCB_RES_MAJOR_VERSION,
XCB_RES_MINOR_VERSION);
xcb_res_query_version_reply_t *xres_reply =
xcb_res_query_version_reply(xwm->xcb_conn, xres_cookie, NULL);
if (xres_reply == NULL) {
return;
}
wlr_log(WLR_DEBUG, "xres version: %" PRIu32 ".%" PRIu32,
xres_reply->server_major, xres_reply->server_minor);
if (xres_reply->server_major > 1 ||
(xres_reply->server_major == 1 && xres_reply->server_minor >= 2)) {
xwm->xres = xres;
}
free(xres_reply);
}
static void xwm_create_wm_window(struct wlr_xwm *xwm) {
static const char name[] = "wlroots wm";
xwm->window = xcb_generate_id(xwm->xcb_conn);
xcb_create_window(xwm->xcb_conn,
XCB_COPY_FROM_PARENT,
xwm->window,
xwm->screen->root,
0, 0,
10, 10,
0,
XCB_WINDOW_CLASS_INPUT_OUTPUT,
xwm->screen->root_visual,
0, NULL);
xcb_change_property(xwm->xcb_conn,
XCB_PROP_MODE_REPLACE,
xwm->window,
xwm->atoms[NET_WM_NAME],
xwm->atoms[UTF8_STRING],
8, // format
strlen(name), name);
xcb_change_property(xwm->xcb_conn,
XCB_PROP_MODE_REPLACE,
xwm->screen->root,
xwm->atoms[NET_SUPPORTING_WM_CHECK],
XCB_ATOM_WINDOW,
32, // format
1, &xwm->window);
xcb_change_property(xwm->xcb_conn,
XCB_PROP_MODE_REPLACE,
xwm->window,
xwm->atoms[NET_SUPPORTING_WM_CHECK],
XCB_ATOM_WINDOW,
32, // format
1, &xwm->window);
xcb_set_selection_owner(xwm->xcb_conn,
xwm->window,
xwm->atoms[WM_S0],
XCB_CURRENT_TIME);
xcb_set_selection_owner(xwm->xcb_conn,
xwm->window,
xwm->atoms[NET_WM_CM_S0],
XCB_CURRENT_TIME);
}
// TODO use me to support 32 bit color somehow
static void xwm_get_visual_and_colormap(struct wlr_xwm *xwm) {
xcb_depth_iterator_t d_iter;
xcb_visualtype_iterator_t vt_iter;
xcb_visualtype_t *visualtype;
d_iter = xcb_screen_allowed_depths_iterator(xwm->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;
}
xwm->visual_id = visualtype->visual_id;
xwm->colormap = xcb_generate_id(xwm->xcb_conn);
xcb_create_colormap(xwm->xcb_conn,
XCB_COLORMAP_ALLOC_NONE,
xwm->colormap,
xwm->screen->root,
xwm->visual_id);
}
static void xwm_get_render_format(struct wlr_xwm *xwm) {
xcb_render_query_pict_formats_cookie_t cookie =
xcb_render_query_pict_formats(xwm->xcb_conn);
xcb_render_query_pict_formats_reply_t *reply =
xcb_render_query_pict_formats_reply(xwm->xcb_conn, 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;
}
xwm->render_format_id = format->id;
free(reply);
}
void xwm_set_cursor(struct wlr_xwm *xwm, const uint8_t *pixels, uint32_t stride,
uint32_t width, uint32_t height, int32_t hotspot_x, int32_t hotspot_y) {
if (!xwm->render_format_id) {
wlr_log(WLR_ERROR, "Cannot set xwm cursor: no render format available");
return;
}
if (xwm->cursor) {
xcb_free_cursor(xwm->xcb_conn, xwm->cursor);
}
int depth = 32;
xcb_pixmap_t pix = xcb_generate_id(xwm->xcb_conn);
xcb_create_pixmap(xwm->xcb_conn, depth, pix, xwm->screen->root, width,
height);
xcb_render_picture_t pic = xcb_generate_id(xwm->xcb_conn);
xcb_render_create_picture(xwm->xcb_conn, pic, pix, xwm->render_format_id,
0, 0);
xcb_gcontext_t gc = xcb_generate_id(xwm->xcb_conn);
xcb_create_gc(xwm->xcb_conn, gc, pix, 0, NULL);
xcb_put_image(xwm->xcb_conn, XCB_IMAGE_FORMAT_Z_PIXMAP, pix, gc,
width, height, 0, 0, 0, depth, stride * height * sizeof(uint8_t),
pixels);
xcb_free_gc(xwm->xcb_conn, gc);
xwm->cursor = xcb_generate_id(xwm->xcb_conn);
xcb_render_create_cursor(xwm->xcb_conn, xwm->cursor, pic, hotspot_x,
hotspot_y);
xcb_free_pixmap(xwm->xcb_conn, pix);
xcb_render_free_picture(xwm->xcb_conn, pic);
uint32_t values[] = {xwm->cursor};
xcb_change_window_attributes(xwm->xcb_conn, xwm->screen->root,
XCB_CW_CURSOR, values);
xcb_flush(xwm->xcb_conn);
}
struct wlr_xwm *xwm_create(struct wlr_xwayland *xwayland, int wm_fd) {
struct wlr_xwm *xwm = calloc(1, sizeof(struct wlr_xwm));
if (xwm == NULL) {
return NULL;
}
xwm->xwayland = xwayland;
wl_list_init(&xwm->surfaces);
wl_list_init(&xwm->surfaces_in_stack_order);
wl_list_init(&xwm->unpaired_surfaces);
wl_list_init(&xwm->pending_startup_ids);
xwm->ping_timeout = 10000;
xwm->xcb_conn = xcb_connect_to_fd(wm_fd, NULL);
int rc = xcb_connection_has_error(xwm->xcb_conn);
if (rc) {
wlr_log(WLR_ERROR, "xcb connect failed: %d", rc);
free(xwm);
return NULL;
}
#if HAS_XCB_ERRORS
if (xcb_errors_context_new(xwm->xcb_conn, &xwm->errors_context)) {
wlr_log(WLR_ERROR, "Could not allocate error context");
xwm_destroy(xwm);
return NULL;
}
#endif
xcb_screen_iterator_t screen_iterator =
xcb_setup_roots_iterator(xcb_get_setup(xwm->xcb_conn));
xwm->screen = screen_iterator.data;
struct wl_event_loop *event_loop =
wl_display_get_event_loop(xwayland->wl_display);
xwm->event_source = wl_event_loop_add_fd(event_loop, wm_fd,
WL_EVENT_READABLE, x11_event_handler, xwm);
wl_event_source_check(xwm->event_source);
xwm_get_resources(xwm);
xwm_get_visual_and_colormap(xwm);
xwm_get_render_format(xwm);
uint32_t values[] = {
XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT |
XCB_EVENT_MASK_PROPERTY_CHANGE,
};
xcb_change_window_attributes(xwm->xcb_conn,
xwm->screen->root,
XCB_CW_EVENT_MASK,
values);
xcb_composite_redirect_subwindows(xwm->xcb_conn,
xwm->screen->root,
XCB_COMPOSITE_REDIRECT_MANUAL);
xcb_atom_t supported[] = {
xwm->atoms[NET_WM_STATE],
xwm->atoms[NET_ACTIVE_WINDOW],
xwm->atoms[NET_WM_MOVERESIZE],
xwm->atoms[NET_WM_STATE_FOCUSED],
xwm->atoms[NET_WM_STATE_MODAL],
xwm->atoms[NET_WM_STATE_FULLSCREEN],
xwm->atoms[NET_WM_STATE_MAXIMIZED_VERT],
xwm->atoms[NET_WM_STATE_MAXIMIZED_HORZ],
xwm->atoms[NET_WM_STATE_HIDDEN],
xwm->atoms[NET_CLIENT_LIST],
xwm->atoms[NET_CLIENT_LIST_STACKING],
};
xcb_change_property(xwm->xcb_conn,
XCB_PROP_MODE_REPLACE,
xwm->screen->root,
xwm->atoms[NET_SUPPORTED],
XCB_ATOM_ATOM,
32,
sizeof(supported)/sizeof(*supported),
supported);
#if HAS_XCB_XFIXES_SET_CLIENT_DISCONNECT_MODE
if (xwm->xwayland->server->options.terminate_delay > 0 &&
xwm->xfixes_major_version >= 6) {
xcb_xfixes_set_client_disconnect_mode(xwm->xcb_conn,
XCB_XFIXES_CLIENT_DISCONNECT_FLAGS_TERMINATE);
}
#endif
xcb_flush(xwm->xcb_conn);
xwm_set_net_active_window(xwm, XCB_WINDOW_NONE);
xwm_selection_init(&xwm->clipboard_selection, xwm, xwm->atoms[CLIPBOARD]);
xwm_selection_init(&xwm->primary_selection, xwm, xwm->atoms[PRIMARY]);
xwm_selection_init(&xwm->dnd_selection, xwm, xwm->atoms[DND_SELECTION]);
xwm->compositor_new_surface.notify = handle_compositor_new_surface;
wl_signal_add(&xwayland->compositor->events.new_surface,
&xwm->compositor_new_surface);
xwm->compositor_destroy.notify = handle_compositor_destroy;
wl_signal_add(&xwayland->compositor->events.destroy,
&xwm->compositor_destroy);
xwm_create_wm_window(xwm);
xcb_flush(xwm->xcb_conn);
return xwm;
}
void wlr_xwayland_surface_set_minimized(struct wlr_xwayland_surface *surface,
bool minimized) {
surface->minimized = minimized;
if (minimized) {
xsurface_set_wm_state(surface, XCB_ICCCM_WM_STATE_ICONIC);
} else {
xsurface_set_wm_state(surface, XCB_ICCCM_WM_STATE_NORMAL);
}
xsurface_set_net_wm_state(surface);
xcb_flush(surface->xwm->xcb_conn);
}
void wlr_xwayland_surface_set_maximized(struct wlr_xwayland_surface *surface,
bool maximized) {
surface->maximized_horz = maximized;
surface->maximized_vert = maximized;
xsurface_set_net_wm_state(surface);
xcb_flush(surface->xwm->xcb_conn);
}
void wlr_xwayland_surface_set_fullscreen(struct wlr_xwayland_surface *surface,
bool fullscreen) {
surface->fullscreen = fullscreen;
xsurface_set_net_wm_state(surface);
xcb_flush(surface->xwm->xcb_conn);
}
bool xwm_atoms_contains(struct wlr_xwm *xwm, xcb_atom_t *atoms,
size_t num_atoms, enum atom_name needle) {
xcb_atom_t atom = xwm->atoms[needle];
for (size_t i = 0; i < num_atoms; ++i) {
if (atom == atoms[i]) {
return true;
}
}
return false;
}
void wlr_xwayland_surface_ping(struct wlr_xwayland_surface *surface) {
xcb_client_message_data_t data = { 0 };
data.data32[0] = surface->xwm->atoms[NET_WM_PING];
data.data32[1] = XCB_CURRENT_TIME;
data.data32[2] = surface->window_id;
xwm_send_wm_message(surface, &data, XCB_EVENT_MASK_NO_EVENT);
wl_event_source_timer_update(surface->ping_timer,
surface->xwm->ping_timeout);
surface->pinging = true;
}
bool wlr_xwayland_or_surface_wants_focus(
const struct wlr_xwayland_surface *xsurface) {
static enum atom_name needles[] = {
NET_WM_WINDOW_TYPE_COMBO,
NET_WM_WINDOW_TYPE_DND,
NET_WM_WINDOW_TYPE_DROPDOWN_MENU,
NET_WM_WINDOW_TYPE_MENU,
NET_WM_WINDOW_TYPE_NOTIFICATION,
NET_WM_WINDOW_TYPE_POPUP_MENU,
NET_WM_WINDOW_TYPE_SPLASH,
NET_WM_WINDOW_TYPE_TOOLTIP,
NET_WM_WINDOW_TYPE_UTILITY,
};
for (size_t i = 0; i < sizeof(needles) / sizeof(needles[0]); ++i) {
if (xwm_atoms_contains(xsurface->xwm, xsurface->window_type,
xsurface->window_type_len, needles[i])) {
return false;
}
}
return true;
}
enum wlr_xwayland_icccm_input_model wlr_xwayland_icccm_input_model(
const struct wlr_xwayland_surface *xsurface) {
bool take_focus = xwm_atoms_contains(xsurface->xwm,
xsurface->protocols, xsurface->protocols_len,
WM_TAKE_FOCUS);
if (!xsurface->hints || xsurface->hints->input) {
if (take_focus) {
return WLR_ICCCM_INPUT_MODEL_LOCAL;
}
return WLR_ICCCM_INPUT_MODEL_PASSIVE;
} else {
if (take_focus) {
return WLR_ICCCM_INPUT_MODEL_GLOBAL;
}
}
return WLR_ICCCM_INPUT_MODEL_NONE;
}