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wlroots-hyprland/xwayland/xwm.c
emersion 81ed1efe4f
xwayland, data-device: fix surface state on unmap 
This commit makes sure surface->mapped is true when the unmapped event is
emitted. This is necessary because listeners can only damage surfaces that are
mapped. This is similar to the fact that the destroy event is emitted before
any destruction is actually made.

Fixes https://github.com/swaywm/sway/issues/3568
2019-02-18 13:14:35 +01:00

1835 lines
51 KiB
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#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_surface.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/xfixes.h>
#include "util/signal.h"
#include "xwayland/xwm.h"
const char *atom_map[ATOM_LAST] = {
"WL_SURFACE_ID",
"WM_DELETE_WINDOW",
"WM_PROTOCOLS",
"WM_HINTS",
"WM_NORMAL_HINTS",
"WM_SIZE_HINTS",
"WM_WINDOW_ROLE",
"_MOTIF_WM_HINTS",
"UTF8_STRING",
"WM_S0",
"_NET_SUPPORTED",
"_NET_WM_CM_S0",
"_NET_WM_PID",
"_NET_WM_NAME",
"_NET_WM_STATE",
"_NET_WM_WINDOW_TYPE",
"WM_TAKE_FOCUS",
"WINDOW",
"_NET_ACTIVE_WINDOW",
"_NET_WM_MOVERESIZE",
"_NET_WM_NAME",
"_NET_SUPPORTING_WM_CHECK",
"_NET_WM_STATE_MODAL",
"_NET_WM_STATE_FULLSCREEN",
"_NET_WM_STATE_MAXIMIZED_VERT",
"_NET_WM_STATE_MAXIMIZED_HORZ",
"_NET_WM_PING",
"WM_STATE",
"CLIPBOARD",
"PRIMARY",
"_WL_SELECTION",
"TARGETS",
"CLIPBOARD_MANAGER",
"INCR",
"TEXT",
"TIMESTAMP",
"DELETE",
"_NET_WM_WINDOW_TYPE_NORMAL",
"_NET_WM_WINDOW_TYPE_UTILITY",
"_NET_WM_WINDOW_TYPE_TOOLTIP",
"_NET_WM_WINDOW_TYPE_DND",
"_NET_WM_WINDOW_TYPE_DROPDOWN_MENU",
"_NET_WM_WINDOW_TYPE_POPUP_MENU",
"_NET_WM_WINDOW_TYPE_COMBO",
"_NET_WM_WINDOW_TYPE_MENU",
"_NET_WM_WINDOW_TYPE_NOTIFICATION",
"_NET_WM_WINDOW_TYPE_SPLASH",
"XdndSelection",
"XdndAware",
"XdndStatus",
"XdndPosition",
"XdndEnter",
"XdndLeave",
"XdndDrop",
"XdndFinished",
"XdndProxy",
"XdndTypeList",
"XdndActionMove",
"XdndActionCopy",
"XdndActionAsk",
"XdndActionPrivate",
"_NET_CLIENT_LIST",
};
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;
wlr_signal_emit_safe(&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_insert(&xwm->surfaces, &surface->link);
wl_list_init(&surface->children);
wl_list_init(&surface->parent_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_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_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);
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;
}
wlr_signal_emit_safe(&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) {
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[mapped_surfaces + 1];
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);
}
static void xwm_send_focus_window(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface) {
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_set_input_focus(xwm->xcb_conn, XCB_INPUT_FOCUS_POINTER_ROOT,
xsurface->window_id, XCB_CURRENT_TIME);
}
uint32_t values[1];
values[0] = XCB_STACK_MODE_ABOVE;
xcb_configure_window(xwm->xcb_conn, xsurface->window_id,
XCB_CONFIG_WINDOW_STACK_MODE, values);
}
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_send_focus_window(xwm, xsurface);
xwm->focus_surface = 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[3];
int i;
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];
}
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_unmap(struct wlr_xwayland_surface *surface);
static void xwayland_surface_destroy(
struct wlr_xwayland_surface *xsurface) {
xsurface_unmap(xsurface);
wlr_signal_emit_safe(&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->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;
}
if (xsurface->surface_id) {
wl_list_remove(&xsurface->unpaired_link);
}
if (xsurface->surface) {
wl_list_remove(&xsurface->surface_destroy.link);
xsurface->surface->role_data = NULL;
}
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->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;
}
wlr_log(WLR_DEBUG, "XCB_ATOM_WM_CLASS: %s %s", surface->instance,
surface->class);
wlr_signal_emit_safe(&surface->events.set_class, surface);
}
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;
}
wlr_log(WLR_DEBUG, "XCB_ATOM_WM_WINDOW_ROLE: %s", xsurface->role);
wlr_signal_emit_safe(&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;
wlr_log(WLR_DEBUG, "XCB_ATOM_WM_NAME: %s", xsurface->title);
wlr_signal_emit_safe(&xsurface->events.set_title, xsurface);
}
static void read_surface_parent(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface,
xcb_get_property_reply_t *reply) {
if (reply->type != XCB_ATOM_WINDOW) {
return;
}
xcb_window_t *xid = xcb_get_property_value(reply);
if (xid != NULL) {
xsurface->parent = lookup_surface(xwm, *xid);
} 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);
}
wlr_log(WLR_DEBUG, "XCB_ATOM_WM_TRANSIENT_FOR: %p", xsurface->parent);
wlr_signal_emit_safe(&xsurface->events.set_parent, xsurface);
}
static void read_surface_pid(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface,
xcb_get_property_reply_t *reply) {
if (reply->type != XCB_ATOM_CARDINAL) {
return;
}
pid_t *pid = xcb_get_property_value(reply);
xsurface->pid = *pid;
wlr_log(WLR_DEBUG, "NET_WM_PID %d", xsurface->pid);
wlr_signal_emit_safe(&xsurface->events.set_pid, xsurface);
}
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;
wlr_log(WLR_DEBUG, "NET_WM_WINDOW_TYPE (%zu)", atoms_len);
wlr_signal_emit_safe(&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;
wlr_log(WLR_DEBUG, "WM_PROTOCOLS (%zu)", atoms_len);
}
#if WLR_HAS_XCB_ICCCM
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;
}
xcb_icccm_wm_hints_t hints;
xcb_icccm_get_wm_hints_from_reply(&hints, reply);
free(xsurface->hints);
xsurface->hints = calloc(1, sizeof(struct wlr_xwayland_surface_hints));
if (xsurface->hints == NULL) {
return;
}
memcpy(xsurface->hints, &hints, sizeof(struct wlr_xwayland_surface_hints));
xsurface->hints_urgency = xcb_icccm_wm_hints_get_urgency(&hints);
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;
}
wlr_log(WLR_DEBUG, "WM_HINTS (%d)", reply->value_len);
wlr_signal_emit_safe(&xsurface->events.set_hints, xsurface);
}
#else
static void read_surface_hints(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface,
xcb_get_property_reply_t *reply) {
// Do nothing
}
#endif
#if WLR_HAS_XCB_ICCCM
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;
}
xcb_size_hints_t size_hints;
xcb_icccm_get_wm_size_hints_from_reply(&size_hints, reply);
free(xsurface->size_hints);
xsurface->size_hints =
calloc(1, sizeof(struct wlr_xwayland_surface_size_hints));
if (xsurface->size_hints == NULL) {
return;
}
memcpy(xsurface->size_hints, &size_hints,
sizeof(struct wlr_xwayland_surface_size_hints));
if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE) == 0) {
xsurface->size_hints->min_width = -1;
xsurface->size_hints->min_height = -1;
}
if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MAX_SIZE) == 0) {
xsurface->size_hints->max_width = -1;
xsurface->size_hints->max_height = -1;
}
wlr_log(WLR_DEBUG, "WM_NORMAL_HINTS (%d)", reply->value_len);
}
#else
static void read_surface_normal_hints(struct wlr_xwm *xwm,
struct wlr_xwayland_surface *xsurface,
xcb_get_property_reply_t *reply) {
// Do nothing
}
#endif
#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;
}
}
wlr_signal_emit_safe(&xsurface->events.set_decorations, xsurface);
}
wlr_log(WLR_DEBUG, "MOTIF_WM_HINTS (%d)", reply->value_len);
}
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;
}
}
}
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]) {
read_surface_pid(xwm, xsurface, reply);
} 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 {
char *prop_name = xwm_get_atom_name(xwm, property);
wlr_log(WLR_DEBUG, "unhandled X11 property %u (%s) for window %u",
property, prop_name, 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 == NULL) {
return;
}
if (!surface->mapped && wlr_surface_has_buffer(surface->surface)) {
wlr_signal_emit_safe(&surface->events.map, surface);
surface->mapped = true;
xwm_set_net_client_list(surface->xwm);
}
}
static void xwayland_surface_role_precommit(struct wlr_surface *wlr_surface) {
assert(wlr_surface->role == &xwayland_surface_role);
struct wlr_xwayland_surface *surface = wlr_surface->role_data;
if (surface == NULL) {
return;
}
if (wlr_surface->pending.committed & WLR_SURFACE_STATE_BUFFER &&
wlr_surface->pending.buffer_resource == NULL) {
// This is a NULL commit
if (surface->mapped) {
wlr_signal_emit_safe(&surface->events.unmap, surface);
surface->mapped = false;
xwm_set_net_client_list(surface->xwm);
}
}
}
static const struct wlr_surface_role xwayland_surface_role = {
.name = "wlr_xwayland_surface",
.commit = xwayland_surface_role_commit,
.precommit = xwayland_surface_role_precommit,
};
static void handle_surface_destroy(struct wl_listener *listener, void *data) {
struct wlr_xwayland_surface *surface =
wl_container_of(listener, surface, surface_destroy);
xsurface_unmap(surface);
}
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;
}
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_WM_STATE],
xwm->atoms[NET_WM_WINDOW_TYPE],
xwm->atoms[NET_WM_NAME],
xwm->atoms[NET_WM_PID],
};
for (size_t i = 0; i < sizeof(props)/sizeof(xcb_atom_t); i++) {
read_surface_property(xwm, xsurface, props[i]);
}
xsurface->surface_destroy.notify = handle_surface_destroy;
wl_signal_add(&surface->events.destroy, &xsurface->surface_destroy);
}
static void xsurface_unmap(struct wlr_xwayland_surface *surface) {
if (surface->mapped) {
wlr_signal_emit_safe(&surface->events.unmap, surface);
surface->mapped = false;
xwm_set_net_client_list(surface->xwm);
}
if (surface->surface_id) {
// 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);
surface->surface_id = 0;
}
if (surface->surface) {
wl_list_remove(&surface->surface_destroy.link);
surface->surface->role_data = NULL;
surface->surface = NULL;
}
}
static void xwm_handle_create_notify(struct wlr_xwm *xwm,
xcb_create_notify_event_t *ev) {
wlr_log(WLR_DEBUG, "XCB_CREATE_NOTIFY (%u)", ev->window);
if (ev->window == xwm->window ||
ev->window == xwm->selection_window ||
ev->window == xwm->dnd_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) {
wlr_log(WLR_DEBUG, "XCB_DESTROY_NOTIFY (%u)", ev->window);
struct wlr_xwayland_surface *xsurface = lookup_surface(xwm, ev->window);
if (xsurface == NULL) {
return;
}
xwayland_surface_destroy(xsurface);
}
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,
};
wlr_log(WLR_DEBUG, "XCB_CONFIGURE_REQUEST (%u) [%ux%u+%d,%d]", ev->window,
wlr_event.width, wlr_event.height, wlr_event.x, wlr_event.y);
wlr_signal_emit_safe(&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;
}
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;
wlr_signal_emit_safe(&xsurface->events.set_override_redirect, xsurface);
}
}
#define ICCCM_WITHDRAWN_STATE 0
#define ICCCM_NORMAL_STATE 1
#define ICCCM_ICONIC_STATE 3
static void xsurface_set_wm_state(struct wlr_xwayland_surface *xsurface,
int32_t state) {
struct wlr_xwm *xwm = xsurface->xwm;
uint32_t property[2];
property[0] = state;
property[1] = 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
2, property);
}
static void xwm_handle_map_request(struct wlr_xwm *xwm,
xcb_map_request_event_t *ev) {
wlr_log(WLR_DEBUG, "XCB_MAP_REQUEST (%u)", ev->window);
struct wlr_xwayland_surface *xsurface = lookup_surface(xwm, ev->window);
if (!xsurface) {
return;
}
xsurface_set_wm_state(xsurface, ICCCM_NORMAL_STATE);
xsurface_set_net_wm_state(xsurface);
uint32_t values[1];
values[0] = XCB_STACK_MODE_BELOW;
xcb_configure_window(xwm->xcb_conn, ev->window,
XCB_CONFIG_WINDOW_STACK_MODE, values);
xcb_map_window(xwm->xcb_conn, ev->window);
}
static void xwm_handle_map_notify(struct wlr_xwm *xwm,
xcb_map_notify_event_t *ev) {
wlr_log(WLR_DEBUG, "XCB_MAP_NOTIFY (%u)", ev->window);
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;
wlr_signal_emit_safe(&xsurface->events.set_override_redirect, xsurface);
}
}
static void xwm_handle_unmap_notify(struct wlr_xwm *xwm,
xcb_unmap_notify_event_t *ev) {
wlr_log(WLR_DEBUG, "XCB_UNMAP_NOTIFY (%u)", ev->window);
struct wlr_xwayland_surface *xsurface = lookup_surface(xwm, ev->window);
if (xsurface == NULL) {
return;
}
xsurface_unmap(xsurface);
xsurface_set_wm_state(xsurface, ICCCM_WITHDRAWN_STATE);
}
static void xwm_handle_property_notify(struct wlr_xwm *xwm,
xcb_property_notify_event_t *ev) {
wlr_log(WLR_DEBUG, "XCB_PROPERTY_NOTIFY (%u)", ev->window);
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->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_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) {
enum wlr_edges edges = WLR_EDGE_NONE;
switch(net_wm_edges) {
case _NET_WM_MOVERESIZE_SIZE_TOPLEFT:
edges = WLR_EDGE_TOP | WLR_EDGE_LEFT;
break;
case _NET_WM_MOVERESIZE_SIZE_TOP:
edges = WLR_EDGE_TOP;
break;
case _NET_WM_MOVERESIZE_SIZE_TOPRIGHT:
edges = WLR_EDGE_TOP | WLR_EDGE_RIGHT;
break;
case _NET_WM_MOVERESIZE_SIZE_RIGHT:
edges = WLR_EDGE_RIGHT;
break;
case _NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT:
edges = WLR_EDGE_BOTTOM | WLR_EDGE_RIGHT;
break;
case _NET_WM_MOVERESIZE_SIZE_BOTTOM:
edges = WLR_EDGE_BOTTOM;
break;
case _NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT:
edges = WLR_EDGE_BOTTOM | WLR_EDGE_LEFT;
break;
case _NET_WM_MOVERESIZE_SIZE_LEFT:
edges = WLR_EDGE_LEFT;
break;
default:
break;
}
return edges;
}
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;
wlr_signal_emit_safe(&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);
wlr_signal_emit_safe(&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 inline 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);
uint32_t action = client_message->data.data32[0];
for (size_t i = 0; i < 2; ++i) {
uint32_t property = client_message->data.data32[1 + i];
if (property == xwm->atoms[_NET_WM_STATE_MODAL] &&
update_state(action, &xsurface->modal)) {
xsurface_set_net_wm_state(xsurface);
} else if (property == xwm->atoms[_NET_WM_STATE_FULLSCREEN] &&
update_state(action, &xsurface->fullscreen)) {
xsurface_set_net_wm_state(xsurface);
} else if (property == xwm->atoms[_NET_WM_STATE_MAXIMIZED_VERT] &&
update_state(action, &xsurface->maximized_vert)) {
xsurface_set_net_wm_state(xsurface);
} else if (property == xwm->atoms[_NET_WM_STATE_MAXIMIZED_HORZ] &&
update_state(action, &xsurface->maximized_horz)) {
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;
}
wlr_signal_emit_safe(&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;
}
wlr_signal_emit_safe(&xsurface->events.request_maximize, xsurface);
}
}
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 %u (%s)",
type, type_name);
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;
}
wlr_signal_emit_safe(&surface->events.request_activate, surface);
}
static void xwm_handle_client_message(struct wlr_xwm *xwm,
xcb_client_message_event_t *ev) {
wlr_log(WLR_DEBUG, "XCB_CLIENT_MESSAGE (%u)", ev->window);
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 (!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 %u (%s)", ev->type,
type_name);
free(type_name);
}
}
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;
}
// Do not let X clients change the focus behind the compositor's
// back. Reset the focus to the old one if it changed.
if (!xwm->focus_surface || ev->event != xwm->focus_surface->window_id) {
xwm_send_focus_window(xwm, xwm->focus_surface);
}
}
static void xwm_handle_xcb_error(struct wlr_xwm *xwm, xcb_value_error_t *ev) {
#if WLR_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 WLR_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;
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;
if (wl_resource_get_client(surface->resource) != xwm->xwayland->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);
xsurface->surface_id = 0;
wl_list_remove(&xsurface->unpaired_link);
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);
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 WLR_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, 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);
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);
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: %d.%d",
xfixes_reply->major_version, xfixes_reply->minor_version);
free(xfixes_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);
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 *wlr_xwayland) {
struct wlr_xwm *xwm = calloc(1, sizeof(struct wlr_xwm));
if (xwm == NULL) {
return NULL;
}
xwm->xwayland = wlr_xwayland;
wl_list_init(&xwm->surfaces);
wl_list_init(&xwm->unpaired_surfaces);
xwm->ping_timeout = 10000;
xwm->xcb_conn = xcb_connect_to_fd(wlr_xwayland->wm_fd[0], NULL);
int rc = xcb_connection_has_error(xwm->xcb_conn);
if (rc) {
wlr_log(WLR_ERROR, "xcb connect failed: %d", rc);
close(wlr_xwayland->wm_fd[0]);
free(xwm);
return NULL;
}
#if WLR_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(
wlr_xwayland->wl_display);
xwm->event_source =
wl_event_loop_add_fd(event_loop,
wlr_xwayland->wm_fd[0],
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_MODAL],
xwm->atoms[_NET_WM_STATE_FULLSCREEN],
xwm->atoms[_NET_WM_STATE_MAXIMIZED_VERT],
xwm->atoms[_NET_WM_STATE_MAXIMIZED_HORZ],
xwm->atoms[_NET_CLIENT_LIST],
};
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);
xcb_flush(xwm->xcb_conn);
xwm_set_net_active_window(xwm, XCB_WINDOW_NONE);
xwm_selection_init(xwm);
xwm->compositor_new_surface.notify = handle_compositor_new_surface;
wl_signal_add(&wlr_xwayland->compositor->events.new_surface,
&xwm->compositor_new_surface);
xwm->compositor_destroy.notify = handle_compositor_destroy;
wl_signal_add(&wlr_xwayland->compositor->events.destroy,
&xwm->compositor_destroy);
xwm_create_wm_window(xwm);
xcb_flush(xwm->xcb_conn);
return xwm;
}
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 *surface) {
bool ret = true;
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(surface->xwm, surface->window_type,
surface->window_type_len, needles[i])) {
ret = false;
}
}
return ret;
}
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