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_t *buttons)
 109 {
 110     button_t *b;
 111
 112     for(b = buttons; b; b = b->next)
 113     {
 114         xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
 115                         XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
 116                         b->button, b->mod);
 117         xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
 118                         XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
 119                         b->button, b->mod | XCB_MOD_MASK_LOCK);
 120         xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
 121                         XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
 122                         b->button, b->mod | globalconf.numlockmask);
 123         xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
 124                         XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
 125                         b->button, b->mod | globalconf.numlockmask | XCB_MOD_MASK_LOCK);
 126     }
 127
 128     xcb_ungrab_button(globalconf.connection, XCB_BUTTON_INDEX_ANY, root, XUTIL_ANY_MODIFIER);
 129 }
 130
 131 /** Grab all buttons on the root window.
 132  * \param root The root window.
 133  */
 134 void
 135 window_root_buttons_grab(xcb_window_t root)
 136 {
 137     button_t *b;
 138
 139     for(b = globalconf.buttons.root; b; b = b->next)
 140     {
 141         xcb_grab_button(globalconf.connection, false, root, BUTTONMASK,
 142                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_SYNC, XCB_NONE, XCB_NONE,
 143                         b->button, b->mod);
 144         xcb_grab_button(globalconf.connection, false, root, BUTTONMASK,
 145                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_SYNC, XCB_NONE, XCB_NONE,
 146                         b->button, b->mod | XCB_MOD_MASK_LOCK);
 147         xcb_grab_button(globalconf.connection, false, root, BUTTONMASK,
 148                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_SYNC, XCB_NONE, XCB_NONE,
 149                         b->button, b->mod | globalconf.numlockmask);
 150         xcb_grab_button(globalconf.connection, false, root, BUTTONMASK,
 151                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_SYNC, XCB_NONE, XCB_NONE,
 152                         b->button, b->mod | globalconf.numlockmask | XCB_MOD_MASK_LOCK);
 153     }
 154 }
 155
 156 /** Get the opacity of a window.
 157  * \param The window.
 158  * \return The opacity, between 0 and 1 or -1 or no opacity set.
 159  */
 160 double
 161 window_opacity_get(xcb_window_t win)
 162 {
 163     xcb_get_property_cookie_t prop_c;
 164     xcb_get_property_reply_t *prop_r;
 165
 166     prop_c = xcb_get_property_unchecked(globalconf.connection, false, win,
 167                                         _NET_WM_WINDOW_OPACITY, CARDINAL, 0L, 1L);
 168
 169     prop_r = xcb_get_property_reply(globalconf.connection, prop_c, NULL);
 170
 171     if(!prop_r || !prop_r->value_len || prop_r->format != 32)
 172         goto bailout;
 173
 174     if(prop_r->value_len)
 175     {
 176         unsigned int *data = xcb_get_property_value(prop_r);
 177         printf("result %d\n", *data);
 178         return (double) *data / (double) 0xffffffff;
 179     }
 180
 181   bailout:
 182     p_delete(&prop_r);
 183     return -1;
 184 }
 185
 186 /** Set opacity of a window.
 187  * \param win The window.
 188  * \param opacity Opacity of the window, between 0 and 1.
 189  */
 190 void
 191 window_opacity_set(xcb_window_t win, double opacity)
 192 {
 193     unsigned int real_opacity = 0xffffffff;
 194
 195     if(opacity >= 0 && opacity <= 1)
 196     {
 197         real_opacity = opacity * 0xffffffff;
 198         xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE, win,
 199                             _NET_WM_WINDOW_OPACITY, CARDINAL, 32, 1L, &real_opacity);
 200     }
 201     else
 202         xcb_delete_property(globalconf.connection, win, _NET_WM_WINDOW_OPACITY);
 203 }
 204
 205 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80