window.c

   1 /*
   2  * window.c - window handling functions
   3  *
   4  * Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  */
  21
  22 #include <xcb/xcb.h>
  23 #include <xcb/xcb_atom.h>
  24
  25 #include "window.h"
  26 #include "common/atoms.h"
  27
  28 extern awesome_t globalconf;
  29
  30 /** Mask shorthands */
  31 #define BUTTONMASK     (XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE)
  32
  33 /** Set client state (WM_STATE) property.
  34  * \param win The window to set state.
  35  * \param state The state to set.
  36  */
  37 void
  38 window_state_set(xcb_window_t win, long state)
  39 {
  40     long data[] = { state, XCB_NONE };
  41     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE, win,
  42                         WM_STATE, WM_STATE, 32, 2, data);
  43 }
  44
  45 /** Send request to get a window state (WM_STATE).
  46  * \param w A client window.
  47  * \return The cookie associated with the request.
  48  */
  49 xcb_get_property_cookie_t
  50 window_state_get_unchecked(xcb_window_t w)
  51 {
  52     return xcb_get_property_unchecked(globalconf.connection, false, w, WM_STATE,
  53                                       WM_STATE, 0L, 2L);
  54 }
  55
  56 /** Get a window state (WM_STATE).
  57  * \param cookie The cookie.
  58  * \return The current state of the window, or -1 on error.
  59  */
  60 long
  61 window_state_get_reply(xcb_get_property_cookie_t cookie)
  62 {
  63     long result = -1;
  64     unsigned char *p = NULL;
  65     xcb_get_property_reply_t *prop_r;
  66
  67     if(!(prop_r = xcb_get_property_reply(globalconf.connection, cookie, NULL)))
  68         return -1;
  69
  70     p = xcb_get_property_value(prop_r);
  71     if(xcb_get_property_value_length(prop_r) != 0)
  72         result = *p;
  73
  74     p_delete(&prop_r);
  75
  76     return result;
  77 }
  78
  79 /** Configure a window with its new geometry and border size.
  80  * \param win The X window id to configure.
  81  * \param geometry The new window geometry.
  82  * \param border The new border size.
  83  */
  84 void
  85 window_configure(xcb_window_t win, area_t geometry, int border)
  86 {
  87     xcb_configure_notify_event_t ce;
  88
  89     ce.response_type = XCB_CONFIGURE_NOTIFY;
  90     ce.event = win;
  91     ce.window = win;
  92     ce.x = geometry.x;
  93     ce.y = geometry.y;
  94     ce.width = geometry.width;
  95     ce.height = geometry.height;
  96     ce.border_width = border;
  97     ce.above_sibling = XCB_NONE;
  98     ce.override_redirect = false;
  99     xcb_send_event(globalconf.connection, false, win, XCB_EVENT_MASK_STRUCTURE_NOTIFY, (char *) &ce);
 100 }
 101
 102 /** Grab or ungrab buttons on a window.
 103  * \param win The window.
 104  * \param root The root window.
 105  * \param buttons The buttons to grab.
 106  */
 107 void
 108 window_buttons_grab(xcb_window_t win, xcb_window_t root, button_array_t *buttons)
 109 {
 110     for(int i = 0; i < buttons->len; i++)
 111     {
 112         xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
 113                         XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
 114                         buttons->tab[i]->button, buttons->tab[i]->mod);
 115         xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
 116                         XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
 117                         buttons->tab[i]->button, buttons->tab[i]->mod | XCB_MOD_MASK_LOCK);
 118         xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
 119                         XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
 120                         buttons->tab[i]->button, buttons->tab[i]->mod | globalconf.numlockmask);
 121         xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
 122                         XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
 123                         buttons->tab[i]->button, buttons->tab[i]->mod | globalconf.numlockmask | XCB_MOD_MASK_LOCK);
 124     }
 125
 126     xcb_ungrab_button(globalconf.connection, XCB_BUTTON_INDEX_ANY, root, XCB_BUTTON_MASK_ANY);
 127 }
 128
 129 /** Grab all buttons on the root window.
 130  * \param root The root window.
 131  */
 132 void
 133 window_root_buttons_grab(xcb_window_t root)
 134 {
 135     button_array_t *barr = &globalconf.buttons;
 136
 137     for(int i = 0; i < barr->len; i++)
 138     {
 139         xcb_grab_button(globalconf.connection, false, root, BUTTONMASK,
 140                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_SYNC, XCB_NONE, XCB_NONE,
 141                         barr->tab[i]->button, barr->tab[i]->mod);
 142         xcb_grab_button(globalconf.connection, false, root, BUTTONMASK,
 143                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_SYNC, XCB_NONE, XCB_NONE,
 144                         barr->tab[i]->button, barr->tab[i]->mod | XCB_MOD_MASK_LOCK);
 145         xcb_grab_button(globalconf.connection, false, root, BUTTONMASK,
 146                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_SYNC, XCB_NONE, XCB_NONE,
 147                         barr->tab[i]->button, barr->tab[i]->mod | globalconf.numlockmask);
 148         xcb_grab_button(globalconf.connection, false, root, BUTTONMASK,
 149                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_SYNC, XCB_NONE, XCB_NONE,
 150                         barr->tab[i]->button, barr->tab[i]->mod | globalconf.numlockmask | XCB_MOD_MASK_LOCK);
 151     }
 152 }
 153
 154 /** Get the opacity of a window.
 155  * \param The window.
 156  * \return The opacity, between 0 and 1 or -1 or no opacity set.
 157  */
 158 double
 159 window_opacity_get(xcb_window_t win)
 160 {
 161     xcb_get_property_cookie_t prop_c;
 162     xcb_get_property_reply_t *prop_r;
 163
 164     prop_c = xcb_get_property_unchecked(globalconf.connection, false, win,
 165                                         _NET_WM_WINDOW_OPACITY, CARDINAL, 0L, 1L);
 166
 167     prop_r = xcb_get_property_reply(globalconf.connection, prop_c, NULL);
 168
 169     if(!prop_r || !prop_r->value_len || prop_r->format != 32)
 170         goto bailout;
 171
 172     if(prop_r->value_len)
 173     {
 174         unsigned int *data = xcb_get_property_value(prop_r);
 175         return (double) *data / (double) 0xffffffff;
 176     }
 177
 178   bailout:
 179     p_delete(&prop_r);
 180     return -1;
 181 }
 182
 183 /** Set opacity of a window.
 184  * \param win The window.
 185  * \param opacity Opacity of the window, between 0 and 1.
 186  */
 187 void
 188 window_opacity_set(xcb_window_t win, double opacity)
 189 {
 190     unsigned int real_opacity = 0xffffffff;
 191
 192     if(opacity >= 0 && opacity <= 1)
 193     {
 194         real_opacity = opacity * 0xffffffff;
 195         xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE, win,
 196                             _NET_WM_WINDOW_OPACITY, CARDINAL, 32, 1L, &real_opacity);
 197     }
 198     else
 199         xcb_delete_property(globalconf.connection, win, _NET_WM_WINDOW_OPACITY);
 200 }
 201
 202 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80