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 "mouse.h"
  27 #include "common/atoms.h"
  28
  29 extern awesome_t globalconf;
  30
  31 /** Mask shorthands */
  32 #define BUTTONMASK     (XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE)
  33
  34 /** Set client state (WM_STATE) property.
  35  * \param win The window to set state.
  36  * \param state The state to set.
  37  */
  38 void
  39 window_state_set(xcb_window_t win, long state)
  40 {
  41     long data[] = { state, XCB_NONE };
  42     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE, win,
  43                         WM_STATE, WM_STATE, 32, 2, data);
  44 }
  45
  46 /** Send request to get a window state (WM_STATE).
  47  * \param w A client window.
  48  * \return The cookie associated with the request.
  49  */
  50 xcb_get_property_cookie_t
  51 window_state_get_unchecked(xcb_window_t w)
  52 {
  53     return xcb_get_property_unchecked(globalconf.connection, false, w, WM_STATE,
  54                                       WM_STATE, 0L, 2L);
  55 }
  56
  57 /** Get a window state (WM_STATE).
  58  * \param cookie The cookie.
  59  * \return The current state of the window, or -1 on error.
  60  */
  61 long
  62 window_state_get_reply(xcb_get_property_cookie_t cookie)
  63 {
  64     long result = -1;
  65     unsigned char *p = NULL;
  66     xcb_get_property_reply_t *prop_r;
  67
  68     if(!(prop_r = xcb_get_property_reply(globalconf.connection, cookie, NULL)))
  69         return -1;
  70
  71     p = xcb_get_property_value(prop_r);
  72     if(xcb_get_property_value_length(prop_r) != 0)
  73         result = *p;
  74
  75     p_delete(&prop_r);
  76
  77     return result;
  78 }
  79
  80 /** Configure a window with its new geometry and border size.
  81  * \param win The X window id to configure.
  82  * \param geometry The new window geometry.
  83  * \param border The new border size.
  84  */
  85 void
  86 window_configure(xcb_window_t win, area_t geometry, int border)
  87 {
  88     xcb_configure_notify_event_t ce;
  89
  90     ce.response_type = XCB_CONFIGURE_NOTIFY;
  91     ce.event = win;
  92     ce.window = win;
  93     ce.x = geometry.x;
  94     ce.y = geometry.y;
  95     ce.width = geometry.width;
  96     ce.height = geometry.height;
  97     ce.border_width = border;
  98     ce.above_sibling = XCB_NONE;
  99     ce.override_redirect = false;
 100     xcb_send_event(globalconf.connection, false, win, XCB_EVENT_MASK_STRUCTURE_NOTIFY, (char *) &ce);
 101 }
 102
 103 /** Grab or ungrab buttons on a window.
 104  * \param win The window.
 105  * \param root The root window.
 106  * \param buttons The buttons to grab.
 107  */
 108 void
 109 window_buttons_grab(xcb_window_t win, xcb_window_t root, button_array_t *buttons)
 110 {
 111     for(int i = 0; i < buttons->len; i++)
 112     {
 113         xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
 114                         XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
 115                         buttons->tab[i]->button, buttons->tab[i]->mod);
 116         xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
 117                         XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
 118                         buttons->tab[i]->button, buttons->tab[i]->mod | XCB_MOD_MASK_LOCK);
 119         xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
 120                         XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
 121                         buttons->tab[i]->button, buttons->tab[i]->mod | globalconf.numlockmask);
 122         xcb_grab_button(globalconf.connection, false, win, BUTTONMASK,
 123                         XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE,
 124                         buttons->tab[i]->button, buttons->tab[i]->mod | globalconf.numlockmask | XCB_MOD_MASK_LOCK);
 125     }
 126
 127     xcb_ungrab_button(globalconf.connection, XCB_BUTTON_INDEX_ANY, root, XCB_BUTTON_MASK_ANY);
 128 }
 129
 130 /** Grab all buttons on the root window.
 131  * \param root The root window.
 132  */
 133 void
 134 window_root_buttons_grab(xcb_window_t root)
 135 {
 136     button_array_t *barr = &globalconf.buttons;
 137
 138     for(int i = 0; i < barr->len; i++)
 139     {
 140         xcb_grab_button(globalconf.connection, false, root, BUTTONMASK,
 141                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_SYNC, XCB_NONE, XCB_NONE,
 142                         barr->tab[i]->button, barr->tab[i]->mod);
 143         xcb_grab_button(globalconf.connection, false, root, BUTTONMASK,
 144                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_SYNC, XCB_NONE, XCB_NONE,
 145                         barr->tab[i]->button, barr->tab[i]->mod | XCB_MOD_MASK_LOCK);
 146         xcb_grab_button(globalconf.connection, false, root, BUTTONMASK,
 147                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_SYNC, XCB_NONE, XCB_NONE,
 148                         barr->tab[i]->button, barr->tab[i]->mod | globalconf.numlockmask);
 149         xcb_grab_button(globalconf.connection, false, root, BUTTONMASK,
 150                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_SYNC, XCB_NONE, XCB_NONE,
 151                         barr->tab[i]->button, barr->tab[i]->mod | globalconf.numlockmask | XCB_MOD_MASK_LOCK);
 152     }
 153 }
 154
 155 /** Get the opacity of a window.
 156  * \param The window.
 157  * \return The opacity, between 0 and 1 or -1 or no opacity set.
 158  */
 159 double
 160 window_opacity_get(xcb_window_t win)
 161 {
 162     xcb_get_property_cookie_t prop_c;
 163     xcb_get_property_reply_t *prop_r;
 164
 165     prop_c = xcb_get_property_unchecked(globalconf.connection, false, win,
 166                                         _NET_WM_WINDOW_OPACITY, CARDINAL, 0L, 1L);
 167
 168     prop_r = xcb_get_property_reply(globalconf.connection, prop_c, NULL);
 169
 170     if(!prop_r || !prop_r->value_len || prop_r->format != 32)
 171         goto bailout;
 172
 173     if(prop_r->value_len)
 174     {
 175         unsigned int *data = xcb_get_property_value(prop_r);
 176         return (double) *data / (double) 0xffffffff;
 177     }
 178
 179   bailout:
 180     p_delete(&prop_r);
 181     return -1;
 182 }
 183
 184 /** Set opacity of a window.
 185  * \param win The window.
 186  * \param opacity Opacity of the window, between 0 and 1.
 187  */
 188 void
 189 window_opacity_set(xcb_window_t win, double opacity)
 190 {
 191     unsigned int real_opacity = 0xffffffff;
 192
 193     if(opacity >= 0 && opacity <= 1)
 194     {
 195         real_opacity = opacity * 0xffffffff;
 196         xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE, win,
 197                             _NET_WM_WINDOW_OPACITY, CARDINAL, 32, 1L, &real_opacity);
 198     }
 199     else
 200         xcb_delete_property(globalconf.connection, win, _NET_WM_WINDOW_OPACITY);
 201 }
 202
 203 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80