dwm-meillo
view wm.c @ 37:eb14fb2c0ee0
small changes to README
| author | Anselm R. Garbe <garbeam@wmii.de> |
|---|---|
| date | Thu, 13 Jul 2006 10:03:56 +0200 |
| parents | e90449e03167 |
| children |
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 /********** CUSTOMIZE **********/
18 char *tags[TLast] = {
19 [Tscratch] = "scratch",
20 [Tdev] = "dev",
21 [Tirc] = "irc",
22 [Twww] = "www",
23 [Twork] = "work",
24 };
26 /********** CUSTOMIZE **********/
28 /* X structs */
29 Display *dpy;
30 Window root, barwin;
31 Atom wm_atom[WMLast], net_atom[NetLast];
32 Cursor cursor[CurLast];
33 Bool running = True;
34 Bool issel;
36 char stext[1024];
37 int tsel = Tdev; /* default tag */
38 int screen, sx, sy, sw, sh, th;
40 DC dc = {0};
41 Client *clients = NULL;
42 Client *stack = NULL;
44 static Bool other_wm_running;
45 static const char version[] =
46 "dwm - " VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
47 static int (*x_error_handler) (Display *, XErrorEvent *);
49 static void
50 usage() { error("usage: dwm [-v]\n"); }
52 static void
53 scan_wins()
54 {
55 unsigned int i, num;
56 Window *wins;
57 XWindowAttributes wa;
58 Window d1, d2;
60 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
61 for(i = 0; i < num; i++) {
62 if(!XGetWindowAttributes(dpy, wins[i], &wa))
63 continue;
64 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
65 continue;
66 if(wa.map_state == IsViewable)
67 manage(wins[i], &wa);
68 }
69 }
70 if(wins)
71 XFree(wins);
72 }
74 static int
75 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
76 {
77 Atom real;
78 int format;
79 unsigned long res, extra;
80 int status;
82 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
83 &res, &extra, prop);
85 if(status != Success || *prop == 0) {
86 return 0;
87 }
88 if(res == 0) {
89 free((void *) *prop);
90 }
91 return res;
92 }
94 int
95 win_proto(Window w)
96 {
97 unsigned char *protocols;
98 long res;
99 int protos = 0;
100 int i;
102 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L, &protocols);
103 if(res <= 0) {
104 return protos;
105 }
106 for(i = 0; i < res; i++) {
107 if(protocols[i] == wm_atom[WMDelete])
108 protos |= WM_PROTOCOL_DELWIN;
109 }
110 free((char *) protocols);
111 return protos;
112 }
114 void
115 send_message(Window w, Atom a, long value)
116 {
117 XEvent e;
119 e.type = ClientMessage;
120 e.xclient.window = w;
121 e.xclient.message_type = a;
122 e.xclient.format = 32;
123 e.xclient.data.l[0] = value;
124 e.xclient.data.l[1] = CurrentTime;
125 XSendEvent(dpy, w, False, NoEventMask, &e);
126 XFlush(dpy);
127 }
129 /*
130 * There's no way to check accesses to destroyed windows, thus
131 * those cases are ignored (especially on UnmapNotify's).
132 * Other types of errors call Xlib's default error handler, which
133 * calls exit().
134 */
135 int
136 error_handler(Display *dpy, XErrorEvent *error)
137 {
138 if(error->error_code == BadWindow
139 || (error->request_code == X_SetInputFocus
140 && error->error_code == BadMatch)
141 || (error->request_code == X_PolyText8
142 && error->error_code == BadDrawable)
143 || (error->request_code == X_PolyFillRectangle
144 && error->error_code == BadDrawable)
145 || (error->request_code == X_PolySegment
146 && error->error_code == BadDrawable)
147 || (error->request_code == X_ConfigureWindow
148 && error->error_code == BadMatch)
149 || (error->request_code == X_GrabKey
150 && error->error_code == BadAccess))
151 return 0;
152 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
153 error->request_code, error->error_code);
154 return x_error_handler(dpy, error); /* may call exit() */
155 }
157 /*
158 * Startup Error handler to check if another window manager
159 * is already running.
160 */
161 static int
162 startup_error_handler(Display *dpy, XErrorEvent *error)
163 {
164 other_wm_running = True;
165 return -1;
166 }
168 static void
169 cleanup()
170 {
171 while(clients)
172 unmanage(clients);
173 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
174 }
176 void
177 quit(void *aux)
178 {
179 running = False;
180 }
182 int
183 main(int argc, char *argv[])
184 {
185 int i;
186 XSetWindowAttributes wa;
187 unsigned int mask;
188 Window w;
189 XEvent ev;
191 /* command line args */
192 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
193 switch (argv[i][1]) {
194 case 'v':
195 fprintf(stdout, "%s", version);
196 exit(0);
197 break;
198 default:
199 usage();
200 break;
201 }
202 }
204 dpy = XOpenDisplay(0);
205 if(!dpy)
206 error("dwm: cannot connect X server\n");
208 screen = DefaultScreen(dpy);
209 root = RootWindow(dpy, screen);
211 /* check if another WM is already running */
212 other_wm_running = False;
213 XSetErrorHandler(startup_error_handler);
214 /* this causes an error if some other WM is running */
215 XSelectInput(dpy, root, SubstructureRedirectMask);
216 XFlush(dpy);
218 if(other_wm_running)
219 error("dwm: another window manager is already running\n");
221 sx = sy = 0;
222 sw = DisplayWidth(dpy, screen);
223 sh = DisplayHeight(dpy, screen);
224 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
226 XSetErrorHandler(0);
227 x_error_handler = XSetErrorHandler(error_handler);
229 /* init atoms */
230 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
231 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
232 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
233 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
235 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
236 PropModeReplace, (unsigned char *) net_atom, NetLast);
239 /* init cursors */
240 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
241 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
242 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
244 update_keys();
246 /* style */
247 initcolors(BGCOLOR, FGCOLOR, BORDERCOLOR);
248 initfont(&dc.font, FONT);
250 th = texth(&dc.font);
252 dc.drawable = XCreatePixmap(dpy, root, sw, th, DefaultDepth(dpy, screen));
253 dc.gc = XCreateGC(dpy, root, 0, 0);
255 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
256 | LeaveWindowMask;
257 wa.cursor = cursor[CurNormal];
258 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
260 scan_wins();
262 while(running) {
263 XNextEvent(dpy, &ev);
264 if(handler[ev.type])
265 (handler[ev.type])(&ev); /* call handler */
266 }
268 cleanup();
269 XCloseDisplay(dpy);
271 return 0;
272 }