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code.delx.au - spectrwm/blob - lib/swm_hack.c
2 * Copyright (c) 2009 Marco Peereboom <marco@peereboom.us>
3 * Copyright (c) 2009 Ryan McBride <mcbride@countersiege.com>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 * Copyright (C) 2005-2007 Carsten Haitzler
19 * Copyright (C) 2006-2007 Kim Woelders
21 * Permission is hereby granted, free of charge, to any person obtaining a copy
22 * of this software and associated documentation files (the "Software"), to
23 * deal in the Software without restriction, including without limitation the
24 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
25 * sell copies of the Software, and to permit persons to whom the Software is
26 * furnished to do so, subject to the following conditions:
28 * The above copyright notice and this permission notice shall be included in
29 * all copies of the Software, its documentation and marketing & publicity
30 * materials, and acknowledgment shall be given in the documentation, materials
31 * and software packages that this Software was used.
33 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
34 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
35 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
36 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
37 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
38 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
41 * Basic hack mechanism (dlopen etc.) taken from e_hack.c in e17.
50 #include <X11/Xatom.h>
51 #include <X11/Intrinsic.h>
53 /* dlopened libs so we can find the symbols in the real one to call them */
54 static void *lib_xlib
= NULL
;
55 static void *lib_xtlib
= NULL
;
57 static Window root
= None
;
58 static bool xterm
= false;
59 static Display
*display
= NULL
;
61 void set_property(Display
*, Window
, char *, char *);
64 #define DLOPEN(s) RTLD_NEXT
66 #define DLOPEN(s) dlopen((s), RTLD_GLOBAL | RTLD_LAZY)
69 /* Find our root window */
78 root
= DefaultRootWindow(dpy
);
80 s
= getenv("ENL_WM_ROOT");
84 sscanf(s
, "%lx", &root
);
89 typedef Atom (XIA
) (Display
*display
, char *atom_name
, Bool
92 typedef int (XCP
) (Display
*display
, Window w
, Atom property
,
93 Atom type
, int format
, int mode
, unsigned char *data
,
96 #define SWM_PROPLEN (16)
98 set_property(Display
*dpy
, Window id
, char *name
, char *val
)
101 char prop
[SWM_PROPLEN
];
102 static XIA
*xia
= NULL
;
103 static XCP
*xcp
= NULL
;
105 if (lib_xlib
== NULL
)
106 lib_xlib
= DLOPEN("libX11.so");
109 xia
= (XIA
*) dlsym(lib_xlib
, "XInternAtom");
111 xcp
= (XCP
*) dlsym(lib_xlib
, "XChangeProperty");
113 if (xia
== NULL
|| xcp
== NULL
) {
114 fprintf(stderr
, "libswmhack.so: ERROR: %s\n", dlerror());
118 /* Try to update the window's workspace property */
119 atom
= (*xia
)(dpy
, name
, False
);
121 if (snprintf(prop
, SWM_PROPLEN
, "%s", val
) < SWM_PROPLEN
)
122 (*xcp
)(dpy
, id
, atom
, XA_STRING
,
123 8, PropModeReplace
, (unsigned char *)prop
,
124 strlen((char *)prop
));
127 typedef Window(CWF
) (Display
* _display
, Window _parent
, int _x
,
128 int _y
, unsigned int _width
,
129 unsigned int _height
,
130 unsigned int _border_width
, int _depth
,
131 unsigned int _class
, Visual
* _visual
,
132 unsigned long _valuemask
,
133 XSetWindowAttributes
* _attributes
);
135 /* XCreateWindow intercept hack */
137 XCreateWindow(Display
*dpy
, Window parent
, int x
, int y
,
138 unsigned int width
, unsigned int height
,
139 unsigned int border_width
,
140 int depth
, unsigned int clss
, Visual
* visual
,
141 unsigned long valuemask
, XSetWindowAttributes
* attributes
)
143 static CWF
*func
= NULL
;
147 if (lib_xlib
== NULL
)
148 lib_xlib
= DLOPEN("libX11.so");
149 if (lib_xlib
&& func
== NULL
) {
150 func
= (CWF
*) dlsym(lib_xlib
, "XCreateWindow");
154 fprintf(stderr
, "libswmhack.so: ERROR: %s\n", dlerror());
158 if (parent
== DefaultRootWindow(dpy
))
159 parent
= MyRoot(dpy
);
161 id
= (*func
) (dpy
, parent
, x
, y
, width
, height
, border_width
,
162 depth
, clss
, visual
, valuemask
, attributes
);
165 if ((env
= getenv("_SWM_WS")) != NULL
)
166 set_property(dpy
, id
, "_SWM_WS", env
);
167 if ((env
= getenv("_SWM_PID")) != NULL
)
168 set_property(dpy
, id
, "_SWM_PID", env
);
169 if ((env
= getenv("_SWM_XTERM_FONTADJ")) != NULL
) {
170 unsetenv("_SWM_XTERM_FONTADJ");
177 typedef Window(CSWF
) (Display
* _display
, Window _parent
, int _x
,
178 int _y
, unsigned int _width
,
179 unsigned int _height
,
180 unsigned int _border_width
,
181 unsigned long _border
,
182 unsigned long _background
);
184 /* XCreateSimpleWindow intercept hack */
186 XCreateSimpleWindow(Display
*dpy
, Window parent
, int x
, int y
,
187 unsigned int width
, unsigned int height
,
188 unsigned int border_width
,
189 unsigned long border
, unsigned long background
)
191 static CSWF
*func
= NULL
;
195 if (lib_xlib
== NULL
)
196 lib_xlib
= DLOPEN("libX11.so");
197 if (lib_xlib
&& func
== NULL
)
198 func
= (CSWF
*) dlsym(lib_xlib
, "XCreateSimpleWindow");
200 fprintf(stderr
, "libswmhack.so: ERROR: %s\n", dlerror());
204 if (parent
== DefaultRootWindow(dpy
))
205 parent
= MyRoot(dpy
);
207 id
= (*func
) (dpy
, parent
, x
, y
, width
, height
,
208 border_width
, border
, background
);
211 if ((env
= getenv("_SWM_WS")) != NULL
)
212 set_property(dpy
, id
, "_SWM_WS", env
);
213 if ((env
= getenv("_SWM_PID")) != NULL
)
214 set_property(dpy
, id
, "_SWM_PID", env
);
215 if ((env
= getenv("_SWM_XTERM_FONTADJ")) != NULL
) {
216 unsetenv("_SWM_XTERM_FONTADJ");
223 typedef int (RWF
) (Display
* _display
, Window _window
, Window _parent
,
226 /* XReparentWindow intercept hack */
228 XReparentWindow(Display
*dpy
, Window window
, Window parent
, int x
, int y
)
230 static RWF
*func
= NULL
;
232 if (lib_xlib
== NULL
)
233 lib_xlib
= DLOPEN("libX11.so");
234 if (lib_xlib
&& func
== NULL
)
235 func
= (RWF
*) dlsym(lib_xlib
, "XReparentWindow");
237 fprintf(stderr
, "libswmhack.so: ERROR: %s\n", dlerror());
238 /* Xlib function always returns 1, so return 0 here. */
242 if (parent
== DefaultRootWindow(dpy
))
243 parent
= MyRoot(dpy
);
245 return (*func
) (dpy
, window
, parent
, x
, y
);
248 typedef void (ANEF
) (XtAppContext app_context
, XEvent
*event_return
);
252 * XtAppNextEvent Intercept Hack
253 * Normally xterm rejects "synthetic" (XSendEvent) events to prevent spoofing.
254 * We don't want to disable this completely, it's insecure. But hook here
255 * and allow these mostly harmless ones that we use to adjust fonts.
258 XtAppNextEvent(XtAppContext app_context
, XEvent
*event_return
)
260 static ANEF
*func
= NULL
;
261 static KeyCode kp_add
= 0, kp_subtract
= 0;
263 if (lib_xtlib
== NULL
)
264 lib_xtlib
= DLOPEN("libXt.so");
265 if (lib_xtlib
&& func
== NULL
) {
266 func
= (ANEF
*) dlsym(lib_xtlib
, "XtAppNextEvent");
268 kp_add
= XKeysymToKeycode(display
, XK_KP_Add
);
269 kp_subtract
= XKeysymToKeycode(display
, XK_KP_Subtract
);
273 fprintf(stderr
, "libswmhack.so: ERROR: %s\n", dlerror());
277 (*func
) (app_context
, event_return
);
279 /* Return here if it's not an Xterm. */
283 /* Allow spoofing of font change keystrokes. */
284 if ((event_return
->type
== KeyPress
||
285 event_return
->type
== KeyRelease
) &&
286 event_return
->xkey
.state
== ShiftMask
&&
287 (event_return
->xkey
.keycode
== kp_add
||
288 event_return
->xkey
.keycode
== kp_subtract
))
289 event_return
->xkey
.send_event
= 0;