/*

* xwindow.c - X window handling 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 3 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, see <http://www.gnu.org/licenses/>.

*

*/

#include <xcb/xcb.h>

#include <xcb/xcb_atom.h>

#include "awesome.h"

#include "xwindow.h"

#include "common/atoms.h"

/** Set client state (WM_STATE) property.

* \param win The window to set state.

* \param state The state to set.

*/

void

xwindow_set_state(xcb_window_t win, uint32_t state)

{

uint32_t data[] = { state, XCB_NONE };

xcb_change_property(_G_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

xwindow_get_state_unchecked(xcb_window_t w)

{

return xcb_get_property_unchecked(_G_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 0 on error.

*/

#include <xcb/xcb_icccm.h>

uint32_t

xwindow_get_state_reply(xcb_get_property_cookie_t cookie)

{

/* If no property is set, we just assume a sane default. */

uint32_t result = XCB_WM_STATE_NORMAL;

xcb_get_property_reply_t *prop_r;

if((prop_r = xcb_get_property_reply(_G_connection, cookie, NULL)))

{

if(xcb_get_property_value_length(prop_r))

result = *(uint32_t *) xcb_get_property_value(prop_r);

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

xwindow_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(_G_connection, false, win, XCB_EVENT_MASK_STRUCTURE_NOTIFY, (char *) &ce);

}

/** Send a request for a window's opacity.

* \param win The window

* \return A cookie for xwindow_get_opacity_from_reply().

*/

xcb_get_property_cookie_t xwindow_get_opacity_unchecked(xcb_window_t win)

{

return xcb_get_property_unchecked(_G_connection, false, win,

_NET_WM_WINDOW_OPACITY, XCB_ATOM_CARDINAL, 0L, 1L);

}

/** Get the opacity of a window.

* \param win The window.

* \return The opacity, between 0 and 1 or -1 or no opacity set.

*/

double

xwindow_get_opacity(xcb_window_t win)

{

xcb_get_property_cookie_t prop_c =

xwindow_get_opacity_unchecked(win);

return xwindow_get_opacity_from_cookie(prop_c);

}

/** Get the opacity of a window.

* \param cookie A cookie for a reply to a get property request for _NET_WM_WINDOW_OPACITY.

* \return The opacity, between 0 and 1.

*/

double

xwindow_get_opacity_from_cookie(xcb_get_property_cookie_t cookie)

{

xcb_get_property_reply_t *prop_r =

xcb_get_property_reply(_G_connection, cookie, NULL);

if(prop_r && prop_r->value_len && prop_r->format == 32)

{

uint32_t value = *(uint32_t *) xcb_get_property_value(prop_r);

p_delete(&prop_r);

return (double) value / (double) 0xffffffff;

}

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

xwindow_set_opacity(xcb_window_t win, double opacity)

{

if(win)

{

if(opacity >= 0 && opacity <= 1)

{

uint32_t real_opacity = opacity * 0xffffffff;

xcb_change_property(_G_connection, XCB_PROP_MODE_REPLACE, win,

_NET_WM_WINDOW_OPACITY, XCB_ATOM_CARDINAL, 32, 1L, &real_opacity);

}

else

xcb_delete_property(_G_connection, win, _NET_WM_WINDOW_OPACITY);

}

}

/** Send WM_TAKE_FOCUS client message to window

* \param win destination window

*/

void

xwindow_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(_G_connection, false, win,

XCB_EVENT_MASK_NO_EVENT, (char *) &ev);

}

/** Set window cursor.

* \param w The window.

* \param c The cursor.

*/

void

xwindow_set_cursor(xcb_window_t w, xcb_cursor_t c)

{

if(w)

xcb_change_window_attributes(_G_connection, w, XCB_CW_CURSOR,

(const uint32_t[]) { c });

}

/** Set a window border color.

* \param w The window.

* \param color The color.

*/

void

xwindow_set_border_color(xcb_window_t w, xcolor_t *color)

{

if(w)

xcb_change_window_attributes(_G_connection, w, XCB_CW_BORDER_PIXEL, &color->pixel);

}

// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80