1 /*
2 * Guifications - The end all, be all, toaster popup plugin
3 * Copyright (C) 2003-2004 Gary Kramlich
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 */
19
20 /*
21 2005.07.22 Modified by Hong Jen Yee (PCMan)
22 This piece of code detecting working area is got from Guifications, a plug-in for Gaim.
23 */
24
25 # include <gdk/gdk.h>
26 # include <gdk/gdkx.h>
27 # include <X11/Xlib.h>
28 # include <X11/Xutil.h>
29 # include <X11/Xatom.h>
30
31 gboolean
gf_display_get_workarea(GdkRectangle * rect)32 gf_display_get_workarea(GdkRectangle *rect) {
33 Atom xa_desktops, xa_current, xa_workarea, xa_type;
34 Display *x_display;
35 Window x_root;
36 guint32 current = 0;
37 gulong *workareas, len, fill;
38 guchar *data;
39 gint format;
40
41 GdkDisplay *g_display;
42 GdkScreen *g_screen;
43 Screen *x_screen;
44
45 /* get the gdk display */
46 g_display = gdk_display_get_default();
47 if(!g_display)
48 return FALSE;
49
50 /* get the x display from the gdk display */
51 x_display = gdk_x11_display_get_xdisplay(g_display);
52 if(!x_display)
53 return FALSE;
54
55 /* get the screen according to the prefs */
56 g_screen = gdk_display_get_default_screen(g_display);
57 if(!g_screen)
58 return FALSE;
59
60 /* get the x screen from the gdk screen */
61 x_screen = gdk_x11_screen_get_xscreen(g_screen);
62 if(!x_screen)
63 return FALSE;
64
65 /* get the root window from the screen */
66 x_root = XRootWindowOfScreen(x_screen);
67
68 /* find the _NET_NUMBER_OF_DESKTOPS atom */
69 xa_desktops = XInternAtom(x_display, "_NET_NUMBER_OF_DESKTOPS", True);
70 if(xa_desktops == None)
71 return FALSE;
72
73 /* get the number of desktops */
74 if(XGetWindowProperty(x_display, x_root, xa_desktops, 0, 1, False,
75 XA_CARDINAL, &xa_type, &format, &len, &fill,
76 &data) != Success)
77 {
78 return FALSE;
79 }
80
81 if(!data)
82 return FALSE;
83
84 XFree(data);
85
86 /* find the _NET_CURRENT_DESKTOP atom */
87 xa_current = XInternAtom(x_display, "_NET_CURRENT_DESKTOP", True);
88 if(xa_current == None)
89 return FALSE;
90
91 /* get the current desktop */
92 if(XGetWindowProperty(x_display, x_root, xa_current, 0, 1, False,
93 XA_CARDINAL, &xa_type, &format, &len, &fill,
94 &data) != Success)
95 {
96 return FALSE;
97 }
98
99 if(!data)
100 return FALSE;
101
102 current = *(guint32 *)data;
103 XFree(data);
104
105 /* find the _NET_WORKAREA atom */
106 xa_workarea = XInternAtom(x_display, "_NET_WORKAREA", True);
107 if(xa_workarea == None)
108 return FALSE;
109
110 if(XGetWindowProperty(x_display, x_root, xa_workarea, 0, (glong)(4 * 32),
111 False, AnyPropertyType, &xa_type, &format, &len,
112 &fill, &data) != Success)
113 {
114 return FALSE;
115 }
116
117 /* make sure the type and format are good */
118 if(xa_type == None || format == 0)
119 return FALSE;
120
121 /* make sure we don't have any leftovers */
122 if(fill)
123 return FALSE;
124
125 /* make sure len divides evenly by 4 */
126 if(len % 4)
127 return FALSE;
128
129 /* it's good, lets use it */
130 workareas = (gulong *)(guint32 *)data;
131
132 rect->x = (guint32)workareas[current * 4];
133 rect->y = (guint32)workareas[current * 4 + 1];
134 rect->width = (guint32)workareas[current * 4 + 2];
135 rect->height = (guint32)workareas[current * 4 + 3];
136
137 /* clean up our memory */
138 XFree(data);
139
140 return TRUE;
141 }
142
get_desktop_working_area(GdkRectangle * area)143 void get_desktop_working_area( GdkRectangle* area )
144 {
145 if( !gf_display_get_workarea(area) )
146 {
147 area->x = 0;
148 area->y = 0;
149 area->width = gdk_screen_width();
150 area->height = gdk_screen_height();
151 }
152 }
153