widgets/systray.c

   1 /*
   2  * systray.c - systray widget
   3  *
   4  * Copyright © 2008-2009 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 "widget.h"
  26 #include "screen.h"
  27 #include "wibox.h"
  28 #include "luaa.h"
  29 #include "globalconf.h"
  30 #include "common/xembed.h"
  31 #include "common/atoms.h"
  32
  33 #define _NET_SYSTEM_TRAY_ORIENTATION_HORZ 0
  34 #define _NET_SYSTEM_TRAY_ORIENTATION_VERT 1
  35
  36 typedef struct
  37 {
  38     /* systray height */
  39     int height;
  40 } systray_data_t;
  41
  42 static area_t
  43 systray_extents(lua_State *L, widget_t *widget)
  44 {
  45     int screen = luaL_optnumber(L, -1, 1) - 1;
  46     luaA_checkscreen(screen);
  47
  48     area_t geometry;
  49     int phys_screen = screen_virttophys(screen), n = 0;
  50     systray_data_t *d = widget->data;
  51
  52     for(int i = 0; i < globalconf.embedded.len; i++)
  53         if(globalconf.embedded.tab[i].phys_screen == phys_screen)
  54             n++;
  55
  56     /** \todo use class hints */
  57     geometry.width  = d->height * n;
  58     geometry.height = d->height;
  59     geometry.x      = geometry.y = 0;
  60
  61     return geometry;
  62 }
  63
  64 static void
  65 systray_draw(widget_t *widget, draw_context_t *ctx,
  66              area_t geometry, wibox_t *p)
  67 {
  68     uint32_t orient;
  69
  70     switch(p->position)
  71     {
  72       case Right:
  73       case Left:
  74         orient = _NET_SYSTEM_TRAY_ORIENTATION_VERT;
  75         break;
  76       default:
  77         orient = _NET_SYSTEM_TRAY_ORIENTATION_HORZ;
  78         break;
  79     }
  80
  81     systray_data_t *d = widget->data;
  82
  83     if (p->orientation == East)
  84         d->height = p->geometry.height;
  85     else
  86         d->height = p->geometry.width;
  87
  88     /* set wibox orientation */
  89     /** \todo stop setting that property on each redraw */
  90     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
  91                         globalconf.screens.tab[p->ctx.phys_screen].systray.window,
  92                         _NET_SYSTEM_TRAY_ORIENTATION, XCB_ATOM_CARDINAL, 32, 1, &orient);
  93 }
  94
  95 /** Delete a systray widget.
  96  * \param w The widget to destroy.
  97  */
  98 static void
  99 systray_destructor(widget_t *w)
 100 {
 101     systray_data_t *d = w->data;
 102     p_delete(&d);
 103 }
 104
 105 /** Initialize a systray widget.
 106  * \param w The widget to initialize.
 107  * \return The same widget.
 108  */
 109 widget_t *
 110 widget_systray(widget_t *w)
 111 {
 112     w->draw = systray_draw;
 113     w->extents = systray_extents;
 114     w->destructor = systray_destructor;
 115
 116     systray_data_t *d = w->data = p_new(systray_data_t, 1);
 117     d->height = 0;
 118
 119     return w;
 120 }
 121 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80