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awesome/ewmh.c
Uli Schlachter e5120e1bec Hide globalconf.L 
Everything that needs the lua_State should create a local variable like this:

  lua_State *L = globalconf_get_lua_State();

This ensures that the compiler warns if there are two variables with name "L" in
scope. The idea here is that it should become harder to accidentally use the
global lua state instead of the state of the current state.

While writing this commit, I found another place that gets its wrong: Reading
client.focus from a coroutine was broken, since it was returning the result on
the main thread instead of the current one.

Signed-off-by: Uli Schlachter <psychon@znc.in>
2014-12-06 11:56:58 +01:00

661 lines
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/*
* ewmh.c - EWMH support functions
*
* Copyright © 2007-2009 Julien Danjou <julien@danjou.info>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include "ewmh.h"
#include "objects/client.h"
#include "objects/tag.h"
#include "common/atoms.h"
#include <sys/types.h>
#include <unistd.h>
#include <xcb/xcb.h>
#include <xcb/xcb_atom.h>
#define _NET_WM_STATE_REMOVE 0
#define _NET_WM_STATE_ADD 1
#define _NET_WM_STATE_TOGGLE 2
/** Update client EWMH hints.
* \param c The client.
*/
static int
ewmh_client_update_hints(lua_State *L)
{
client_t *c = luaA_checkudata(L, 1, &client_class);
xcb_atom_t state[10]; /* number of defined state atoms */
int i = 0;
if(c->modal)
state[i++] = _NET_WM_STATE_MODAL;
if(c->fullscreen)
state[i++] = _NET_WM_STATE_FULLSCREEN;
if(c->maximized_vertical)
state[i++] = _NET_WM_STATE_MAXIMIZED_VERT;
if(c->maximized_horizontal)
state[i++] = _NET_WM_STATE_MAXIMIZED_HORZ;
if(c->sticky)
state[i++] = _NET_WM_STATE_STICKY;
if(c->skip_taskbar)
state[i++] = _NET_WM_STATE_SKIP_TASKBAR;
if(c->above)
state[i++] = _NET_WM_STATE_ABOVE;
if(c->below)
state[i++] = _NET_WM_STATE_BELOW;
if(c->minimized)
state[i++] = _NET_WM_STATE_HIDDEN;
if(c->urgent)
state[i++] = _NET_WM_STATE_DEMANDS_ATTENTION;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
c->window, _NET_WM_STATE, XCB_ATOM_ATOM, 32, i, state);
return 0;
}
static int
ewmh_update_net_active_window(lua_State *L)
{
xcb_window_t win;
if(globalconf.focus.client)
win = globalconf.focus.client->window;
else
win = XCB_NONE;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
globalconf.screen->root,
_NET_ACTIVE_WINDOW, XCB_ATOM_WINDOW, 32, 1, &win);
return 0;
}
static int
ewmh_update_net_client_list(lua_State *L)
{
xcb_window_t *wins = p_alloca(xcb_window_t, globalconf.clients.len);
int n = 0;
foreach(client, globalconf.clients)
wins[n++] = (*client)->window;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
globalconf.screen->root,
_NET_CLIENT_LIST, XCB_ATOM_WINDOW, 32, n, wins);
return 0;
}
void
ewmh_init(void)
{
lua_State *L = globalconf_get_lua_State();
xcb_window_t father;
xcb_screen_t *xscreen = globalconf.screen;
xcb_atom_t atom[] =
{
_NET_SUPPORTED,
_NET_SUPPORTING_WM_CHECK,
_NET_STARTUP_ID,
_NET_CLIENT_LIST,
_NET_CLIENT_LIST_STACKING,
_NET_NUMBER_OF_DESKTOPS,
_NET_CURRENT_DESKTOP,
_NET_DESKTOP_NAMES,
_NET_ACTIVE_WINDOW,
_NET_CLOSE_WINDOW,
_NET_WM_NAME,
_NET_WM_STRUT_PARTIAL,
_NET_WM_ICON_NAME,
_NET_WM_VISIBLE_ICON_NAME,
_NET_WM_DESKTOP,
_NET_WM_WINDOW_TYPE,
_NET_WM_WINDOW_TYPE_DESKTOP,
_NET_WM_WINDOW_TYPE_DOCK,
_NET_WM_WINDOW_TYPE_TOOLBAR,
_NET_WM_WINDOW_TYPE_MENU,
_NET_WM_WINDOW_TYPE_UTILITY,
_NET_WM_WINDOW_TYPE_SPLASH,
_NET_WM_WINDOW_TYPE_DIALOG,
_NET_WM_WINDOW_TYPE_DROPDOWN_MENU,
_NET_WM_WINDOW_TYPE_POPUP_MENU,
_NET_WM_WINDOW_TYPE_TOOLTIP,
_NET_WM_WINDOW_TYPE_NOTIFICATION,
_NET_WM_WINDOW_TYPE_COMBO,
_NET_WM_WINDOW_TYPE_DND,
_NET_WM_WINDOW_TYPE_NORMAL,
_NET_WM_ICON,
_NET_WM_PID,
_NET_WM_STATE,
_NET_WM_STATE_STICKY,
_NET_WM_STATE_SKIP_TASKBAR,
_NET_WM_STATE_FULLSCREEN,
_NET_WM_STATE_MAXIMIZED_HORZ,
_NET_WM_STATE_MAXIMIZED_VERT,
_NET_WM_STATE_ABOVE,
_NET_WM_STATE_BELOW,
_NET_WM_STATE_MODAL,
_NET_WM_STATE_HIDDEN,
_NET_WM_STATE_DEMANDS_ATTENTION
};
int i;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xscreen->root, _NET_SUPPORTED, XCB_ATOM_ATOM, 32,
countof(atom), atom);
/* create our own window */
father = xcb_generate_id(globalconf.connection);
xcb_create_window(globalconf.connection, xscreen->root_depth,
father, xscreen->root, -1, -1, 1, 1, 0,
XCB_COPY_FROM_PARENT, xscreen->root_visual, 0, NULL);
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xscreen->root, _NET_SUPPORTING_WM_CHECK, XCB_ATOM_WINDOW, 32,
1, &father);
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
father, _NET_SUPPORTING_WM_CHECK, XCB_ATOM_WINDOW, 32,
1, &father);
/* set the window manager name */
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
father, _NET_WM_NAME, UTF8_STRING, 8, 7, "awesome");
/* set the window manager PID */
i = getpid();
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
father, _NET_WM_PID, XCB_ATOM_CARDINAL, 32, 1, &i);
luaA_class_connect_signal(L, &client_class, "focus", ewmh_update_net_active_window);
luaA_class_connect_signal(L, &client_class, "unfocus", ewmh_update_net_active_window);
luaA_class_connect_signal(L, &client_class, "manage", ewmh_update_net_client_list);
luaA_class_connect_signal(L, &client_class, "unmanage", ewmh_update_net_client_list);
luaA_class_connect_signal(L, &client_class, "property::modal" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::fullscreen" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::maximized_horizontal" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::maximized_vertical" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::sticky" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::skip_taskbar" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::above" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::below" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::minimized" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::urgent" , ewmh_client_update_hints);
}
/** Set the client list in stacking order, bottom to top.
*/
void
ewmh_update_net_client_list_stacking(void)
{
int n = 0;
xcb_window_t *wins = p_alloca(xcb_window_t, globalconf.stack.len);
foreach(client, globalconf.stack)
wins[n++] = (*client)->window;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
globalconf.screen->root,
_NET_CLIENT_LIST_STACKING, XCB_ATOM_WINDOW, 32, n, wins);
}
void
ewmh_update_net_numbers_of_desktop(void)
{
uint32_t count = globalconf.tags.len;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
globalconf.screen->root,
_NET_NUMBER_OF_DESKTOPS, XCB_ATOM_CARDINAL, 32, 1, &count);
}
void
ewmh_update_net_current_desktop(void)
{
uint32_t idx = tags_get_first_selected_index();
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
globalconf.screen->root,
_NET_CURRENT_DESKTOP, XCB_ATOM_CARDINAL, 32, 1, &idx);
}
void
ewmh_update_net_desktop_names(void)
{
buffer_t buf;
buffer_inita(&buf, BUFSIZ);
foreach(tag, globalconf.tags)
{
buffer_adds(&buf, tag_get_name(*tag));
buffer_addc(&buf, '\0');
}
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
globalconf.screen->root,
_NET_DESKTOP_NAMES, UTF8_STRING, 8, buf.len, buf.s);
buffer_wipe(&buf);
}
static void
ewmh_process_state_atom(client_t *c, xcb_atom_t state, int set)
{
lua_State *L = globalconf_get_lua_State();
luaA_object_push(L, c);
if(state == _NET_WM_STATE_STICKY)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_sticky(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_sticky(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_sticky(L, -1, !c->sticky);
}
else if(state == _NET_WM_STATE_SKIP_TASKBAR)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_skip_taskbar(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_skip_taskbar(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_skip_taskbar(L, -1, !c->skip_taskbar);
}
else if(state == _NET_WM_STATE_FULLSCREEN)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_fullscreen(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_fullscreen(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_fullscreen(L, -1, !c->fullscreen);
}
else if(state == _NET_WM_STATE_MAXIMIZED_HORZ)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_maximized_horizontal(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_maximized_horizontal(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_maximized_horizontal(L, -1, !c->maximized_horizontal);
}
else if(state == _NET_WM_STATE_MAXIMIZED_VERT)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_maximized_vertical(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_maximized_vertical(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_maximized_vertical(L, -1, !c->maximized_vertical);
}
else if(state == _NET_WM_STATE_ABOVE)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_above(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_above(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_above(L, -1, !c->above);
}
else if(state == _NET_WM_STATE_BELOW)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_below(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_below(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_below(L, -1, !c->below);
}
else if(state == _NET_WM_STATE_MODAL)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_modal(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_modal(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_modal(L, -1, !c->modal);
}
else if(state == _NET_WM_STATE_HIDDEN)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_minimized(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_minimized(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_minimized(L, -1, !c->minimized);
}
else if(state == _NET_WM_STATE_DEMANDS_ATTENTION)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_urgent(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_urgent(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_urgent(L, -1, !c->urgent);
}
lua_pop(L, 1);
}
static void
ewmh_process_desktop(client_t *c, uint32_t desktop)
{
lua_State *L = globalconf_get_lua_State();
int idx = desktop;
if(desktop == 0xffffffff)
{
luaA_object_push(L, c);
lua_pushnil(L);
luaA_object_emit_signal(L, -2, "request::tag", 1);
/* Pop the client, arguments are already popped */
lua_pop(L, 1);
}
else if (idx >= 0 && idx < globalconf.tags.len)
{
luaA_object_push(L, c);
luaA_object_push(L, globalconf.tags.tab[idx]);
luaA_object_emit_signal(L, -2, "request::tag", 1);
/* Pop the client, arguments are already popped */
lua_pop(L, 1);
}
}
int
ewmh_process_client_message(xcb_client_message_event_t *ev)
{
client_t *c;
if(ev->type == _NET_CURRENT_DESKTOP)
{
int idx = ev->data.data32[0];
if (idx >= 0 && idx < globalconf.tags.len)
{
lua_State *L = globalconf_get_lua_State();
luaA_object_push(L, globalconf.tags.tab[idx]);
luaA_object_emit_signal(L, -1, "request::select", 0);
lua_pop(L, 1);
}
}
else if(ev->type == _NET_CLOSE_WINDOW)
{
if((c = client_getbywin(ev->window)))
client_kill(c);
}
else if(ev->type == _NET_WM_DESKTOP)
{
if((c = client_getbywin(ev->window)))
{
ewmh_process_desktop(c, ev->data.data32[0]);
}
}
else if(ev->type == _NET_WM_STATE)
{
if((c = client_getbywin(ev->window)))
{
ewmh_process_state_atom(c, (xcb_atom_t) ev->data.data32[1], ev->data.data32[0]);
if(ev->data.data32[2])
ewmh_process_state_atom(c, (xcb_atom_t) ev->data.data32[2],
ev->data.data32[0]);
}
}
else if(ev->type == _NET_ACTIVE_WINDOW)
{
if((c = client_getbywin(ev->window))) {
lua_State *L = globalconf_get_lua_State();
luaA_object_push(L, c);
lua_pushstring(L, "ewmh");
luaA_object_emit_signal(L, -2, "request::activate", 1);
lua_pop(L, 1);
}
}
return 0;
}
/** Update the client active desktop.
* This is "wrong" since it can be on several tags, but EWMH has a strict view
* of desktop system so just take the first tag.
* \param c The client.
*/
void
ewmh_client_update_desktop(client_t *c)
{
int i;
for(i = 0; i < globalconf.tags.len; i++)
if(is_client_tagged(c, globalconf.tags.tab[i]))
{
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
c->window, _NET_WM_DESKTOP, XCB_ATOM_CARDINAL, 32, 1, &i);
return;
}
/* It doesn't have any tags, remove the property */
xcb_delete_property(globalconf.connection, c->window, _NET_WM_DESKTOP);
}
/** Update the client struts.
* \param window The window to update the struts for.
* \param strut The strut type to update the window with.
*/
void
ewmh_update_strut(xcb_window_t window, strut_t *strut)
{
if(window)
{
const uint32_t state[] =
{
strut->left,
strut->right,
strut->top,
strut->bottom,
strut->left_start_y,
strut->left_end_y,
strut->right_start_y,
strut->right_end_y,
strut->top_start_x,
strut->top_end_x,
strut->bottom_start_x,
strut->bottom_end_x
};
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
window, _NET_WM_STRUT_PARTIAL, XCB_ATOM_CARDINAL, 32, countof(state), state);
}
}
/** Update the window type.
* \param window The window to update.
* \param type The new type to set.
*/
void
ewmh_update_window_type(xcb_window_t window, uint32_t type)
{
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
window, _NET_WM_WINDOW_TYPE, XCB_ATOM_ATOM, 32, 1, &type);
}
void
ewmh_client_check_hints(client_t *c)
{
xcb_atom_t *state;
void *data = NULL;
xcb_get_property_cookie_t c0, c1, c2;
xcb_get_property_reply_t *reply;
/* Send the GetProperty requests which will be processed later */
c0 = xcb_get_property_unchecked(globalconf.connection, false, c->window,
_NET_WM_DESKTOP, XCB_GET_PROPERTY_TYPE_ANY, 0, 1);
c1 = xcb_get_property_unchecked(globalconf.connection, false, c->window,
_NET_WM_STATE, XCB_ATOM_ATOM, 0, UINT32_MAX);
c2 = xcb_get_property_unchecked(globalconf.connection, false, c->window,
_NET_WM_WINDOW_TYPE, XCB_ATOM_ATOM, 0, UINT32_MAX);
reply = xcb_get_property_reply(globalconf.connection, c0, NULL);
if(reply && reply->value_len && (data = xcb_get_property_value(reply)))
{
ewmh_process_desktop(c, *(uint32_t *) data);
}
p_delete(&reply);
reply = xcb_get_property_reply(globalconf.connection, c1, NULL);
if(reply && (data = xcb_get_property_value(reply)))
{
state = (xcb_atom_t *) data;
for(int i = 0; i < xcb_get_property_value_length(reply) / ssizeof(xcb_atom_t); i++)
ewmh_process_state_atom(c, state[i], _NET_WM_STATE_ADD);
}
p_delete(&reply);
reply = xcb_get_property_reply(globalconf.connection, c2, NULL);
if(reply && (data = xcb_get_property_value(reply)))
{
state = (xcb_atom_t *) data;
for(int i = 0; i < xcb_get_property_value_length(reply) / ssizeof(xcb_atom_t); i++)
if(state[i] == _NET_WM_WINDOW_TYPE_DESKTOP)
c->type = MAX(c->type, WINDOW_TYPE_DESKTOP);
else if(state[i] == _NET_WM_WINDOW_TYPE_DIALOG)
c->type = MAX(c->type, WINDOW_TYPE_DIALOG);
else if(state[i] == _NET_WM_WINDOW_TYPE_SPLASH)
c->type = MAX(c->type, WINDOW_TYPE_SPLASH);
else if(state[i] == _NET_WM_WINDOW_TYPE_DOCK)
c->type = MAX(c->type, WINDOW_TYPE_DOCK);
else if(state[i] == _NET_WM_WINDOW_TYPE_MENU)
c->type = MAX(c->type, WINDOW_TYPE_MENU);
else if(state[i] == _NET_WM_WINDOW_TYPE_TOOLBAR)
c->type = MAX(c->type, WINDOW_TYPE_TOOLBAR);
else if(state[i] == _NET_WM_WINDOW_TYPE_UTILITY)
c->type = MAX(c->type, WINDOW_TYPE_UTILITY);
}
p_delete(&reply);
}
/** Process the WM strut of a client.
* \param c The client.
* \param strut_r (Optional) An existing reply.
*/
void
ewmh_process_client_strut(client_t *c)
{
void *data;
xcb_get_property_reply_t *strut_r;
xcb_get_property_cookie_t strut_q = xcb_get_property_unchecked(globalconf.connection, false, c->window,
_NET_WM_STRUT_PARTIAL, XCB_ATOM_CARDINAL, 0, 12);
strut_r = xcb_get_property_reply(globalconf.connection, strut_q, NULL);
if(strut_r
&& strut_r->value_len
&& (data = xcb_get_property_value(strut_r)))
{
uint32_t *strut = data;
if(c->strut.left != strut[0]
|| c->strut.right != strut[1]
|| c->strut.top != strut[2]
|| c->strut.bottom != strut[3]
|| c->strut.left_start_y != strut[4]
|| c->strut.left_end_y != strut[5]
|| c->strut.right_start_y != strut[6]
|| c->strut.right_end_y != strut[7]
|| c->strut.top_start_x != strut[8]
|| c->strut.top_end_x != strut[9]
|| c->strut.bottom_start_x != strut[10]
|| c->strut.bottom_end_x != strut[11])
{
c->strut.left = strut[0];
c->strut.right = strut[1];
c->strut.top = strut[2];
c->strut.bottom = strut[3];
c->strut.left_start_y = strut[4];
c->strut.left_end_y = strut[5];
c->strut.right_start_y = strut[6];
c->strut.right_end_y = strut[7];
c->strut.top_start_x = strut[8];
c->strut.top_end_x = strut[9];
c->strut.bottom_start_x = strut[10];
c->strut.bottom_end_x = strut[11];
lua_State *L = globalconf_get_lua_State();
luaA_object_push(L, c);
luaA_object_emit_signal(L, -1, "property::struts", 0);
lua_pop(L, 1);
}
}
p_delete(&strut_r);
}
/** Send request to get NET_WM_ICON (EWMH)
* \param w The window.
* \return The cookie associated with the request.
*/
xcb_get_property_cookie_t
ewmh_window_icon_get_unchecked(xcb_window_t w)
{
return xcb_get_property_unchecked(globalconf.connection, false, w,
_NET_WM_ICON, XCB_ATOM_CARDINAL, 0, UINT32_MAX);
}
static cairo_surface_t *
ewmh_window_icon_from_reply(xcb_get_property_reply_t *r)
{
uint32_t *data;
uint64_t len;
if(!r || r->type != XCB_ATOM_CARDINAL || r->format != 32 || r->length < 2)
return 0;
data = (uint32_t *) xcb_get_property_value(r);
if (!data)
return 0;
/* Check that the property is as long as it should be, handling integer
* overflow. <uint32_t> times <another uint32_t casted to uint64_t> always
* fits into an uint64_t and thus this multiplication cannot overflow.
*/
len = data[0] * (uint64_t) data[1];
if (!data[0] || !data[1] || len > r->length - 2)
return 0;
return draw_surface_from_data(data[0], data[1], data + 2);
}
/** Get NET_WM_ICON.
* \param cookie The cookie.
* \return The number of elements on stack.
*/
cairo_surface_t *
ewmh_window_icon_get_reply(xcb_get_property_cookie_t cookie)
{
xcb_get_property_reply_t *r = xcb_get_property_reply(globalconf.connection, cookie, NULL);
cairo_surface_t *surface = ewmh_window_icon_from_reply(r);
p_delete(&r);
return surface;
}
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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