aewl
view wm.c @ 2:a79188fe4a40
added new stuff
| author | Anselm R. Garbe <garbeam@wmii.de> |
|---|---|
| date | Mon, 10 Jul 2006 18:35:39 +0200 |
| parents | 491f34c11291 |
| children | e969f3575b7a |
line source
1 /*
2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * See LICENSE file for license details.
4 */
6 #include <stdarg.h>
7 #include <stdio.h>
8 #include <stdlib.h>
10 #include <X11/cursorfont.h>
11 #include <X11/Xatom.h>
12 #include <X11/Xproto.h>
14 #include "wm.h"
16 Display *dpy;
17 Window root;
18 XRectangle rect;
19 int screen, sel_screen;
20 Atom wm_atom[WMLast];
21 Atom net_atom[NetLast];
22 Cursor cursor[CurLast];
23 unsigned int kmask, numlock_mask;
24 Pixmap pmap;
26 enum { WM_PROTOCOL_DELWIN = 1 };
28 static Bool other_wm_running;
29 static int (*x_error_handler) (Display *, XErrorEvent *);
30 static char version[] = "gridwm - " VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
32 static void
33 usage()
34 {
35 fputs("usage: gridwm [-v]\n", stderr);
36 exit(1);
37 }
39 static void
40 scan_wins()
41 {
42 unsigned int i, num;
43 Window *wins;
44 XWindowAttributes wa;
45 Window d1, d2;
47 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
48 for(i = 0; i < num; i++) {
49 if(!XGetWindowAttributes(dpy, wins[i], &wa))
50 continue;
51 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
52 continue;
53 if(wa.map_state == IsViewable)
54 /*manage*/;
55 }
56 }
57 if(wins)
58 XFree(wins);
59 }
61 static int
62 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
63 {
64 Atom real;
65 int format;
66 unsigned long res, extra;
67 int status;
69 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
70 &res, &extra, prop);
72 if(status != Success || *prop == 0) {
73 return 0;
74 }
75 if(res == 0) {
76 free((void *) *prop);
77 }
78 return res;
79 }
81 int
82 win_proto(Window w)
83 {
84 Atom *protocols;
85 long res;
86 int protos = 0;
87 int i;
89 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L,
90 ((unsigned char **) &protocols));
91 if(res <= 0) {
92 return protos;
93 }
94 for(i = 0; i < res; i++) {
95 if(protocols[i] == wm_atom[WMDelete])
96 protos |= WM_PROTOCOL_DELWIN;
97 }
98 free((char *) protocols);
99 return protos;
100 }
102 /*
103 * There's no way to check accesses to destroyed windows, thus
104 * those cases are ignored (especially on UnmapNotify's).
105 * Other types of errors call Xlib's default error handler, which
106 * calls exit().
107 */
108 static int
109 error_handler(Display *dpy, XErrorEvent *error)
110 {
111 if(error->error_code == BadWindow
112 || (error->request_code == X_SetInputFocus
113 && error->error_code == BadMatch)
114 || (error->request_code == X_PolyText8
115 && error->error_code == BadDrawable)
116 || (error->request_code == X_PolyFillRectangle
117 && error->error_code == BadDrawable)
118 || (error->request_code == X_PolySegment
119 && error->error_code == BadDrawable)
120 || (error->request_code == X_ConfigureWindow
121 && error->error_code == BadMatch)
122 || (error->request_code == X_GrabKey
123 && error->error_code == BadAccess))
124 return 0;
125 fprintf(stderr, "gridwm: fatal error: request code=%d, error code=%d\n",
126 error->request_code, error->error_code);
127 return x_error_handler(dpy, error); /* may call exit() */
128 }
130 /*
131 * Startup Error handler to check if another window manager
132 * is already running.
133 */
134 static int
135 startup_error_handler(Display *dpy, XErrorEvent *error)
136 {
137 other_wm_running = True;
138 return -1;
139 }
141 static void
142 init_lock_keys()
143 {
144 XModifierKeymap *modmap;
145 KeyCode numlock;
146 int i;
147 static int masks[] = {
148 ShiftMask, LockMask, ControlMask, Mod1Mask,
149 Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
150 };
152 numlock_mask = 0;
153 modmap = XGetModifierMapping(dpy);
154 numlock = XKeysymToKeycode(dpy, XStringToKeysym("Num_Lock"));
156 if(modmap && modmap->max_keypermod > 0) {
157 int max = (sizeof(masks) / sizeof(int)) * modmap->max_keypermod;
158 for(i = 0; i < max; i++)
159 if(numlock && (modmap->modifiermap[i] == numlock))
160 numlock_mask = masks[i / modmap->max_keypermod];
161 }
162 XFreeModifiermap(modmap);
164 kmask = 255 & ~(numlock_mask | LockMask);
165 }
167 static void
168 cleanup()
169 {
170 /*
171 Client *c;
172 for(c=client; c; c=c->next)
173 reparent_client(c, root, c->sel->rect.x, c->sel->rect.y);
174 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
175 */
176 }
178 int
179 main(int argc, char *argv[])
180 {
181 int i;
182 XSetWindowAttributes wa;
183 unsigned int mask;
184 Window w;
186 /* command line args */
187 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
188 switch (argv[i][1]) {
189 case 'v':
190 fprintf(stdout, "%s", version);
191 exit(0);
192 break;
193 default:
194 usage();
195 break;
196 }
197 }
199 dpy = XOpenDisplay(0);
200 if(!dpy)
201 error("gridwm: cannot connect X server\n");
203 screen = DefaultScreen(dpy);
204 root = RootWindow(dpy, screen);
206 /* check if another WM is already running */
207 other_wm_running = False;
208 XSetErrorHandler(startup_error_handler);
209 /* this causes an error if some other WM is running */
210 XSelectInput(dpy, root, SubstructureRedirectMask);
211 XSync(dpy, False);
213 if(other_wm_running)
214 error("gridwm: another window manager is already running\n");
216 rect.x = rect.y = 0;
217 rect.width = DisplayWidth(dpy, screen);
218 rect.height = DisplayHeight(dpy, screen);
219 sel_screen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
221 XSetErrorHandler(0);
222 x_error_handler = XSetErrorHandler(error_handler);
224 /* init atoms */
225 wm_atom[WMState] = XInternAtom(dpy, "WM_STATE", False);
226 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
227 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
228 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
229 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
231 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
232 PropModeReplace, (unsigned char *) net_atom, NetLast);
235 /* init cursors */
236 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
237 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
238 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
240 init_lock_keys();
242 pmap = XCreatePixmap(dpy, root, rect.width, rect.height,
243 DefaultDepth(dpy, screen));
245 wa.event_mask = SubstructureRedirectMask | EnterWindowMask | LeaveWindowMask;
246 wa.cursor = cursor[CurNormal];
247 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
249 scan_wins();
251 cleanup();
252 XCloseDisplay(dpy);
254 return 0;
255 }