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awesome/ewmh.c
Uli Schlachter 65dfdf01ce Remove _NET_WM_DESKTOP when client got no tags 
EWMH says that "Window Managers MUST keep this property updated on all windows",
but doesn't say anything about clients which got no desktop at all. Removing the
property seems to be the best we could do.

Signed-off-by: Uli Schlachter <psychon@znc.in>
Signed-off-by: Julien Danjou <julien@danjou.info>
2010-06-14 20:04:38 +02:00

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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 <sys/types.h>
#include <unistd.h>
#include <xcb/xcb.h>
#include <xcb/xcb_atom.h>
#include "ewmh.h"
#include "objects/tag.h"
#include "screen.h"
#include "objects/client.h"
#include "objects/widget.h"
#include "objects/wibox.h"
#include "luaa.h"
#include "common/atoms.h"
#include "common/buffer.h"
#include "common/xutil.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, ATOM, 32, i, state);
return 0;
}
static int
ewmh_signal_on_client_new(lua_State *L)
{
#define DO_ADD_SIGNAL_FOR_PROPERTY(prop) \
lua_pushcfunction(L, ewmh_client_update_hints); \
luaA_object_add_signal(L, 1, "property::" #prop , -1);
DO_ADD_SIGNAL_FOR_PROPERTY(modal)
DO_ADD_SIGNAL_FOR_PROPERTY(fullscreen)
DO_ADD_SIGNAL_FOR_PROPERTY(maximized_horizontal)
DO_ADD_SIGNAL_FOR_PROPERTY(maximized_vertical)
DO_ADD_SIGNAL_FOR_PROPERTY(sticky)
DO_ADD_SIGNAL_FOR_PROPERTY(skip_taskbar)
DO_ADD_SIGNAL_FOR_PROPERTY(above)
DO_ADD_SIGNAL_FOR_PROPERTY(below)
DO_ADD_SIGNAL_FOR_PROPERTY(minimized)
DO_ADD_SIGNAL_FOR_PROPERTY(urgent)
#undef DO_ADD_SIGNAL_FOR_PROPERTY
return 0;
}
/** Update the desktop geometry.
* \param phys_screen The physical screen id.
*/
static void
ewmh_update_desktop_geometry(int phys_screen)
{
area_t geom = screen_area_get(&globalconf.screens.tab[phys_screen], false);
uint32_t sizes[] = { geom.width, geom.height };
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xutil_screen_get(globalconf.connection, phys_screen)->root,
_NET_DESKTOP_GEOMETRY, CARDINAL, 32, countof(sizes), sizes);
}
static int
ewmh_update_net_active_window(lua_State *L)
{
client_t *c = luaA_checkudata(L, 1, &client_class);
xcb_window_t win;
if(globalconf.screen_focus->client_focus
&& globalconf.screen_focus->client_focus->phys_screen == c->phys_screen)
win = globalconf.screen_focus->client_focus->window;
else
win = XCB_NONE;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xutil_screen_get(globalconf.connection, c->phys_screen)->root,
_NET_ACTIVE_WINDOW, WINDOW, 32, 1, &win);
return 0;
}
void
ewmh_init(int phys_screen)
{
xcb_window_t father;
xcb_screen_t *xscreen = xutil_screen_get(globalconf.connection, phys_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_DESKTOP_GEOMETRY,
_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, 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, WINDOW, 32,
1, &father);
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
father, _NET_SUPPORTING_WM_CHECK, 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, CARDINAL, 32, 1, &i);
ewmh_update_desktop_geometry(phys_screen);
lua_pushcfunction(globalconf.L, ewmh_signal_on_client_new);
luaA_class_add_signal(globalconf.L, &client_class, "new", -1);
lua_pushcfunction(globalconf.L, ewmh_update_net_active_window);
luaA_class_add_signal(globalconf.L, &client_class, "focus", -1);
lua_pushcfunction(globalconf.L, ewmh_update_net_active_window);
luaA_class_add_signal(globalconf.L, &client_class, "unfocus", -1);
}
void
ewmh_update_net_client_list(int phys_screen)
{
xcb_window_t *wins = p_alloca(xcb_window_t, globalconf.clients.len);
int n = 0;
foreach(_c, globalconf.clients)
{
client_t *c = *_c;
if(c->phys_screen == phys_screen)
wins[n++] = c->window;
}
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xutil_screen_get(globalconf.connection, phys_screen)->root,
_NET_CLIENT_LIST, WINDOW, 32, n, wins);
}
/** Set the client list in stacking order, bottom to top.
* \param phys_screen The physical screen id.
*/
void
ewmh_update_net_client_list_stacking(int phys_screen)
{
int n = 0;
xcb_window_t *wins = p_alloca(xcb_window_t, globalconf.stack.len);
foreach(client, globalconf.stack)
if((*client)->phys_screen == phys_screen)
wins[n++] = (*client)->window;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xutil_screen_get(globalconf.connection, phys_screen)->root,
_NET_CLIENT_LIST_STACKING, WINDOW, 32, n, wins);
}
void
ewmh_update_net_numbers_of_desktop(int phys_screen)
{
uint32_t count = globalconf.screens.tab[phys_screen].tags.len;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xutil_screen_get(globalconf.connection, phys_screen)->root,
_NET_NUMBER_OF_DESKTOPS, CARDINAL, 32, 1, &count);
}
void
ewmh_update_net_current_desktop(int phys_screen)
{
uint32_t idx = tags_get_first_selected_index(&globalconf.screens.tab[phys_screen]);
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xutil_screen_get(globalconf.connection, phys_screen)->root,
_NET_CURRENT_DESKTOP, CARDINAL, 32, 1, &idx);
}
void
ewmh_update_net_desktop_names(int phys_screen)
{
buffer_t buf;
buffer_inita(&buf, BUFSIZ);
foreach(tag, globalconf.screens.tab[phys_screen].tags)
{
buffer_adds(&buf, tag_get_name(*tag));
buffer_addc(&buf, '\0');
}
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xutil_screen_get(globalconf.connection, phys_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)
{
luaA_object_push(globalconf.L, c);
if(state == _NET_WM_STATE_STICKY)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_sticky(globalconf.L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_sticky(globalconf.L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_sticky(globalconf.L, -1, !c->sticky);
}
else if(state == _NET_WM_STATE_SKIP_TASKBAR)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_skip_taskbar(globalconf.L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_skip_taskbar(globalconf.L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_skip_taskbar(globalconf.L, -1, !c->skip_taskbar);
}
else if(state == _NET_WM_STATE_FULLSCREEN)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_fullscreen(globalconf.L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_fullscreen(globalconf.L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_fullscreen(globalconf.L, -1, !c->fullscreen);
}
else if(state == _NET_WM_STATE_MAXIMIZED_HORZ)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_maximized_horizontal(globalconf.L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_maximized_horizontal(globalconf.L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_maximized_horizontal(globalconf.L, -1, !c->maximized_horizontal);
}
else if(state == _NET_WM_STATE_MAXIMIZED_VERT)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_maximized_vertical(globalconf.L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_maximized_vertical(globalconf.L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_maximized_vertical(globalconf.L, -1, !c->maximized_vertical);
}
else if(state == _NET_WM_STATE_ABOVE)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_above(globalconf.L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_above(globalconf.L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_above(globalconf.L, -1, !c->above);
}
else if(state == _NET_WM_STATE_BELOW)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_below(globalconf.L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_below(globalconf.L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_below(globalconf.L, -1, !c->below);
}
else if(state == _NET_WM_STATE_MODAL)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_modal(globalconf.L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_modal(globalconf.L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_modal(globalconf.L, -1, !c->modal);
}
else if(state == _NET_WM_STATE_HIDDEN)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_minimized(globalconf.L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_minimized(globalconf.L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_minimized(globalconf.L, -1, !c->minimized);
}
else if(state == _NET_WM_STATE_DEMANDS_ATTENTION)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_urgent(globalconf.L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_urgent(globalconf.L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_urgent(globalconf.L, -1, !c->urgent);
}
}
int
ewmh_process_client_message(xcb_client_message_event_t *ev)
{
client_t *c;
int screen;
if(ev->type == _NET_CURRENT_DESKTOP)
for(screen = 0;
screen < xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
screen++)
{
if(ev->window == xutil_screen_get(globalconf.connection, screen)->root)
tag_view_only_byindex(&globalconf.screens.tab[screen], ev->data.data32[0]);
}
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)))
{
tag_array_t *tags = &c->screen->tags;
if(ev->data.data32[0] == 0xffffffff)
c->sticky = true;
else
for(int i = 0; i < tags->len; i++)
if((int)ev->data.data32[0] == i)
{
luaA_object_push(globalconf.L, tags->tab[i]);
tag_client(c);
}
else
untag_client(c, tags->tab[i]);
}
}
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)))
client_focus(c);
}
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;
tag_array_t *tags = &c->screen->tags;
for(i = 0; i < tags->len; i++)
if(is_client_tagged(c, tags->tab[i]))
{
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
c->window, _NET_WM_DESKTOP, 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, CARDINAL, 32, countof(state), state);
}
}
void
ewmh_client_check_hints(client_t *c)
{
xcb_atom_t *state;
void *data = NULL;
int desktop;
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, ATOM, 0, UINT32_MAX);
c2 = xcb_get_property_unchecked(globalconf.connection, false, c->window,
_NET_WM_WINDOW_TYPE, ATOM, 0, UINT32_MAX);
reply = xcb_get_property_reply(globalconf.connection, c0, NULL);
if(reply && reply->value_len && (data = xcb_get_property_value(reply)))
{
tag_array_t *tags = &c->screen->tags;
desktop = *(uint32_t *) data;
if(desktop == -1)
c->sticky = true;
else
for(int i = 0; i < tags->len; i++)
if(desktop == i)
{
luaA_object_push(globalconf.L, tags->tab[i]);
tag_client(c);
}
else
untag_client(c, tags->tab[i]);
}
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, xcb_get_property_reply_t *strut_r)
{
void *data;
xcb_get_property_reply_t *mstrut_r = NULL;
if(!strut_r)
{
xcb_get_property_cookie_t strut_q = xcb_get_property_unchecked(globalconf.connection, false, c->window,
_NET_WM_STRUT_PARTIAL, CARDINAL, 0, 12);
strut_r = mstrut_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];
luaA_object_push(globalconf.L, c);
luaA_object_emit_signal(globalconf.L, -1, "property::struts", 0);
lua_pop(globalconf.L, 1);
}
}
p_delete(&mstrut_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, CARDINAL, 0, UINT32_MAX);
}
int
ewmh_window_icon_from_reply(xcb_get_property_reply_t *r)
{
uint32_t *data;
uint64_t len;
if(!r || r->type != 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 image_new_from_argb32(globalconf.L, data[0], data[1], data + 2);
}
/** Get NET_WM_ICON.
* \param cookie The cookie.
* \return The number of elements on stack.
*/
int
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);
int ret = ewmh_window_icon_from_reply(r);
p_delete(&r);
return ret;
}
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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