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awesome/window.c

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/*
* window.c - window handling functions
*
* Copyright © 2007-2008 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 <xcb/xcb.h>
#include <xcb/xcb_atom.h>
#include "window.h"
#include "mouse.h"
#include "common/atoms.h"
/** Mask shorthands */
#define BUTTONMASK (XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE)
/** Set client state (WM_STATE) property.
* \param win The window to set state.
* \param state The state to set.
*/
void
window_state_set(xcb_window_t win, long state)
{
long data[] = { state, XCB_NONE };
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE, win,
WM_STATE, WM_STATE, 32, 2, data);
}
/** Send request to get a window state (WM_STATE).
* \param w A client window.
* \return The cookie associated with the request.
*/
xcb_get_property_cookie_t
window_state_get_unchecked(xcb_window_t w)
{
return xcb_get_property_unchecked(globalconf.connection, false, w, WM_STATE,
WM_STATE, 0L, 2L);
}
/** Get a window state (WM_STATE).
* \param cookie The cookie.
* \return The current state of the window, or -1 on error.
*/
long
window_state_get_reply(xcb_get_property_cookie_t cookie)
{
long result = -1;
unsigned char *p = NULL;
xcb_get_property_reply_t *prop_r;
if(!(prop_r = xcb_get_property_reply(globalconf.connection, cookie, NULL)))
return -1;
p = xcb_get_property_value(prop_r);
if(xcb_get_property_value_length(prop_r) != 0)
result = *p;
p_delete(&prop_r);
return result;
}
/** Configure a window with its new geometry and border size.
* \param win The X window id to configure.
* \param geometry The new window geometry.
* \param border The new border size.
*/
void
window_configure(xcb_window_t win, area_t geometry, int border)
{
xcb_configure_notify_event_t ce;
ce.response_type = XCB_CONFIGURE_NOTIFY;
ce.event = win;
ce.window = win;
ce.x = geometry.x;
ce.y = geometry.y;
ce.width = geometry.width;
ce.height = geometry.height;
ce.border_width = border;
ce.above_sibling = XCB_NONE;
ce.override_redirect = false;
xcb_send_event(globalconf.connection, false, win, XCB_EVENT_MASK_STRUCTURE_NOTIFY, (char *) &ce);
}
/** Grab or ungrab buttons on a window.
* \param win The window.
* \param buttons The buttons to grab.
*/
void
window_buttons_grab(xcb_window_t win, button_array_t *buttons)
{
for(int i = 0; i < buttons->len; i++)
{
xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
buttons->tab[i]->button, buttons->tab[i]->mod);
xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
buttons->tab[i]->button, buttons->tab[i]->mod | XCB_MOD_MASK_LOCK);
xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
buttons->tab[i]->button, buttons->tab[i]->mod | globalconf.numlockmask);
xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
buttons->tab[i]->button, buttons->tab[i]->mod | globalconf.numlockmask | XCB_MOD_MASK_LOCK);
}
}
/** Get the opacity of a window.
* \param The window.
* \return The opacity, between 0 and 1 or -1 or no opacity set.
*/
double
window_opacity_get(xcb_window_t win)
{
xcb_get_property_cookie_t prop_c;
xcb_get_property_reply_t *prop_r;
prop_c = xcb_get_property_unchecked(globalconf.connection, false, win,
_NET_WM_WINDOW_OPACITY, CARDINAL, 0L, 1L);
prop_r = xcb_get_property_reply(globalconf.connection, prop_c, NULL);
if(!prop_r || !prop_r->value_len || prop_r->format != 32)
goto bailout;
if(prop_r->value_len)
{
unsigned int *data = xcb_get_property_value(prop_r);
return (double) *data / (double) 0xffffffff;
}
bailout:
p_delete(&prop_r);
return -1;
}
/** Set opacity of a window.
* \param win The window.
* \param opacity Opacity of the window, between 0 and 1.
*/
void
window_opacity_set(xcb_window_t win, double opacity)
{
unsigned int real_opacity = 0xffffffff;
if(opacity >= 0 && opacity <= 1)
{
real_opacity = opacity * 0xffffffff;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE, win,
_NET_WM_WINDOW_OPACITY, CARDINAL, 32, 1L, &real_opacity);
}
else
xcb_delete_property(globalconf.connection, win, _NET_WM_WINDOW_OPACITY);
}
/** Check if client supports protocol a protocole in WM_PROTOCOL.
* \param win The window.
* \return True if client has the atom in protocol, false otherwise.
*/
bool
window_hasproto(xcb_window_t win, xcb_atom_t atom)
{
uint32_t i;
xcb_get_wm_protocols_reply_t protocols;
bool ret = false;
if(xcb_get_wm_protocols_reply(globalconf.connection,
xcb_get_wm_protocols_unchecked(globalconf.connection,
win, WM_PROTOCOLS),
&protocols, NULL))
{
for(i = 0; !ret && i < protocols.atoms_len; i++)
if(protocols.atoms[i] == atom)
ret = true;
xcb_get_wm_protocols_reply_wipe(&protocols);
}
return ret;
}
/** Send WM_TAKE_FOCUS client message to window
* \param win destination window
*/
void
window_takefocus(xcb_window_t win)
{
xcb_client_message_event_t ev;
/* Initialize all of event's fields first */
p_clear(&ev, 1);
ev.response_type = XCB_CLIENT_MESSAGE;
ev.window = win;
ev.format = 32;
ev.data.data32[1] = XCB_CURRENT_TIME;
ev.type = WM_PROTOCOLS;
ev.data.data32[0] = WM_TAKE_FOCUS;
xcb_send_event(globalconf.connection, false, win,
XCB_EVENT_MASK_NO_EVENT, (char *) &ev);
}
/** Sets focus on window - using xcb_set_input_focus or WM_TAKE_FOCUS
* \param w Window that should get focus
* \param set_input_focus Should we call xcb_set_input_focus
*/
void
window_setfocus(xcb_window_t w, bool set_input_focus)
{
bool takefocus = window_hasproto(w, WM_TAKE_FOCUS);
if(set_input_focus)
xcb_set_input_focus(globalconf.connection, XCB_INPUT_FOCUS_PARENT,
w, XCB_CURRENT_TIME);
if(takefocus)
window_takefocus(w);
}
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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