257 lines
7.5 KiB
C
257 lines
7.5 KiB
C
/*
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* xwindow.c - X window handling functions
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*
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* Copyright © 2007-2009 Julien Danjou <julien@danjou.info>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <xcb/xcb.h>
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#include <xcb/xcb_atom.h>
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#include "xwindow.h"
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#include "objects/button.h"
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#include "common/atoms.h"
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/** Mask shorthands */
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#define BUTTONMASK (XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE)
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/** Set client state (WM_STATE) property.
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* \param win The window to set state.
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* \param state The state to set.
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*/
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void
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xwindow_set_state(xcb_window_t win, uint32_t state)
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{
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uint32_t data[] = { state, XCB_NONE };
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xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE, win,
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WM_STATE, WM_STATE, 32, 2, data);
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}
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/** Send request to get a window state (WM_STATE).
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* \param w A client window.
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* \return The cookie associated with the request.
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*/
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xcb_get_property_cookie_t
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xwindow_get_state_unchecked(xcb_window_t w)
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{
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return xcb_get_property_unchecked(globalconf.connection, false, w, WM_STATE,
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WM_STATE, 0L, 2L);
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}
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/** Get a window state (WM_STATE).
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* \param cookie The cookie.
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* \return The current state of the window, or 0 on error.
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*/
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uint32_t
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xwindow_get_state_reply(xcb_get_property_cookie_t cookie)
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{
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/* If no property is set, we just assume a sane default. */
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uint32_t result = XCB_WM_STATE_NORMAL;
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xcb_get_property_reply_t *prop_r;
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if((prop_r = xcb_get_property_reply(globalconf.connection, cookie, NULL)))
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{
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if(xcb_get_property_value_length(prop_r))
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result = *(uint32_t *) xcb_get_property_value(prop_r);
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p_delete(&prop_r);
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}
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return result;
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}
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/** Configure a window with its new geometry and border size.
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* \param win The X window id to configure.
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* \param geometry The new window geometry.
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* \param border The new border size.
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*/
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void
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xwindow_configure(xcb_window_t win, area_t geometry, int border)
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{
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xcb_configure_notify_event_t ce;
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ce.response_type = XCB_CONFIGURE_NOTIFY;
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ce.event = win;
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ce.window = win;
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ce.x = geometry.x;
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ce.y = geometry.y;
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ce.width = geometry.width;
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ce.height = geometry.height;
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ce.border_width = border;
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ce.above_sibling = XCB_NONE;
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ce.override_redirect = false;
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xcb_send_event(globalconf.connection, false, win, XCB_EVENT_MASK_STRUCTURE_NOTIFY, (char *) &ce);
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}
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/** Grab or ungrab buttons on a window.
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* \param win The window.
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* \param buttons The buttons to grab.
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*/
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void
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xwindow_buttons_grab(xcb_window_t win, button_array_t *buttons)
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{
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/* Ungrab everything first */
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xcb_ungrab_button(globalconf.connection, XCB_BUTTON_INDEX_ANY, win, XCB_BUTTON_MASK_ANY);
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foreach(b, *buttons)
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xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
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XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
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(*b)->button, (*b)->modifiers);
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}
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/** Grab key on a window.
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* \param win The window.
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* \param k The key.
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*/
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static void
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xwindow_grabkey(xcb_window_t win, keyb_t *k)
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{
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if(k->keycode)
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xcb_grab_key(globalconf.connection, true, win,
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k->modifiers, k->keycode, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
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else if(k->keysym)
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{
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xcb_keycode_t *keycodes = xcb_key_symbols_get_keycode(globalconf.keysyms, k->keysym);
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if(keycodes)
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{
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for(xcb_keycode_t *kc = keycodes; *kc; kc++)
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xcb_grab_key(globalconf.connection, true, win,
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k->modifiers, *kc, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
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p_delete(&keycodes);
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}
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}
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}
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void
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xwindow_grabkeys(xcb_window_t win, key_array_t *keys)
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{
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/* Ungrab everything first */
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xcb_ungrab_key(globalconf.connection, XCB_GRAB_ANY, win, XCB_BUTTON_MASK_ANY);
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foreach(k, *keys)
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xwindow_grabkey(win, *k);
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}
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/** Send a request for a window's opacity.
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* \param win The window
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* \return A cookie for xwindow_get_opacity_from_reply().
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*/
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xcb_get_property_cookie_t xwindow_get_opacity_unchecked(xcb_window_t win)
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{
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return xcb_get_property_unchecked(globalconf.connection, false, win,
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_NET_WM_WINDOW_OPACITY, XCB_ATOM_CARDINAL, 0L, 1L);
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}
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/** Get the opacity of a window.
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* \param win The window.
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* \return The opacity, between 0 and 1 or -1 or no opacity set.
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*/
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double
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xwindow_get_opacity(xcb_window_t win)
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{
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xcb_get_property_cookie_t prop_c =
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xwindow_get_opacity_unchecked(win);
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return xwindow_get_opacity_from_cookie(prop_c);
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}
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/** Get the opacity of a window.
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* \param cookie A cookie for a reply to a get property request for _NET_WM_WINDOW_OPACITY.
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* \return The opacity, between 0 and 1.
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*/
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double
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xwindow_get_opacity_from_cookie(xcb_get_property_cookie_t cookie)
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{
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xcb_get_property_reply_t *prop_r =
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xcb_get_property_reply(globalconf.connection, cookie, NULL);
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if(prop_r && prop_r->value_len && prop_r->format == 32)
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{
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uint32_t value = *(uint32_t *) xcb_get_property_value(prop_r);
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p_delete(&prop_r);
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return (double) value / (double) 0xffffffff;
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}
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p_delete(&prop_r);
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return -1;
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}
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/** Set opacity of a window.
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* \param win The window.
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* \param opacity Opacity of the window, between 0 and 1.
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*/
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void
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xwindow_set_opacity(xcb_window_t win, double opacity)
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{
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if(win)
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{
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if(opacity >= 0 && opacity <= 1)
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{
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uint32_t real_opacity = opacity * 0xffffffff;
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xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE, win,
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_NET_WM_WINDOW_OPACITY, XCB_ATOM_CARDINAL, 32, 1L, &real_opacity);
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}
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else
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xcb_delete_property(globalconf.connection, win, _NET_WM_WINDOW_OPACITY);
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}
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}
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/** Send WM_TAKE_FOCUS client message to window
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* \param win destination window
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*/
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void
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xwindow_takefocus(xcb_window_t win)
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{
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xcb_client_message_event_t ev;
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/* Initialize all of event's fields first */
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p_clear(&ev, 1);
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ev.response_type = XCB_CLIENT_MESSAGE;
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ev.window = win;
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ev.format = 32;
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ev.data.data32[1] = XCB_CURRENT_TIME;
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ev.type = WM_PROTOCOLS;
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ev.data.data32[0] = WM_TAKE_FOCUS;
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xcb_send_event(globalconf.connection, false, win,
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XCB_EVENT_MASK_NO_EVENT, (char *) &ev);
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}
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/** Set window cursor.
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* \param w The window.
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* \param c The cursor.
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*/
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void
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xwindow_set_cursor(xcb_window_t w, xcb_cursor_t c)
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{
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xcb_change_window_attributes(globalconf.connection, w, XCB_CW_CURSOR,
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(const uint32_t[]) { c });
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}
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/** Set a window border color.
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* \param w The window.
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* \param color The color.
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*/
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void
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xwindow_set_border_color(xcb_window_t w, xcolor_t *color)
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{
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if(w)
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xcb_change_window_attributes(globalconf.connection, w, XCB_CW_BORDER_PIXEL, &color->pixel);
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}
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// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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