aewl
view main.c @ 177:e890cee887d1
hotfix of settags
| author | arg@10ksloc.org |
|---|---|
| date | Thu, 03 Aug 2006 11:38:26 +0200 |
| parents | a6a31e485fbd |
| children | e848966a1ac6 |
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 "dwm.h"
7 #include <errno.h>
8 #include <stdio.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <unistd.h>
12 #include <sys/select.h>
13 #include <X11/cursorfont.h>
14 #include <X11/Xatom.h>
15 #include <X11/Xproto.h>
17 /* static */
19 static int (*xerrorxlib)(Display *, XErrorEvent *);
20 static Bool otherwm;
22 static void
23 cleanup()
24 {
25 while(sel) {
26 resize(sel, True, TopLeft);
27 unmanage(sel);
28 }
29 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
30 }
32 static void
33 scan()
34 {
35 unsigned int i, num;
36 Window *wins, d1, d2;
37 XWindowAttributes wa;
39 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
40 for(i = 0; i < num; i++) {
41 if(!XGetWindowAttributes(dpy, wins[i], &wa))
42 continue;
43 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
44 continue;
45 if(wa.map_state == IsViewable)
46 manage(wins[i], &wa);
47 }
48 }
49 if(wins)
50 XFree(wins);
51 }
53 static int
54 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
55 {
56 int status, format;
57 unsigned long res, extra;
58 Atom real;
60 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
61 &res, &extra, prop);
63 if(status != Success || *prop == 0) {
64 return 0;
65 }
66 if(res == 0) {
67 free((void *) *prop);
68 }
69 return res;
70 }
72 /*
73 * Startup Error handler to check if another window manager
74 * is already running.
75 */
76 static int
77 xerrorstart(Display *dsply, XErrorEvent *ee)
78 {
79 otherwm = True;
80 return -1;
81 }
83 /* extern */
85 char stext[1024];
86 int tsel = DEFTAG;
87 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
88 Atom wmatom[WMLast], netatom[NetLast];
89 Bool running = True;
90 Bool issel = True;
91 Client *clients = NULL;
92 Client *sel = NULL;
93 Cursor cursor[CurLast];
94 Display *dpy;
95 DC dc = {0};
96 Window root, barwin;
98 int
99 getproto(Window w)
100 {
101 int protos = 0;
102 int i;
103 long res;
104 unsigned char *protocols;
106 res = win_property(w, wmatom[WMProtocols], XA_ATOM, 20L, &protocols);
107 if(res <= 0) {
108 return protos;
109 }
110 for(i = 0; i < res; i++) {
111 if(protocols[i] == wmatom[WMDelete])
112 protos |= PROTODELWIN;
113 }
114 free((char *) protocols);
115 return protos;
116 }
118 void
119 sendevent(Window w, Atom a, long value)
120 {
121 XEvent e;
123 e.type = ClientMessage;
124 e.xclient.window = w;
125 e.xclient.message_type = a;
126 e.xclient.format = 32;
127 e.xclient.data.l[0] = value;
128 e.xclient.data.l[1] = CurrentTime;
129 XSendEvent(dpy, w, False, NoEventMask, &e);
130 XSync(dpy, False);
131 }
133 void
134 quit(Arg *arg)
135 {
136 running = False;
137 }
139 /*
140 * There's no way to check accesses to destroyed windows, thus those cases are
141 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
142 * default error handler, which calls exit().
143 */
144 int
145 xerror(Display *dpy, XErrorEvent *ee)
146 {
147 if(ee->error_code == BadWindow
148 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
149 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
150 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
151 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
152 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
153 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess))
154 return 0;
155 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
156 ee->request_code, ee->error_code);
157 return xerrorxlib(dpy, ee); /* may call exit() */
158 }
160 int
161 main(int argc, char *argv[])
162 {
163 int i;
164 unsigned int mask;
165 fd_set rd;
166 Bool readin = True;
167 Window w;
168 XEvent ev;
169 XSetWindowAttributes wa;
171 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
172 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
173 exit(EXIT_SUCCESS);
174 }
175 else if(argc != 1)
176 eprint("usage: dwm [-v]\n");
178 dpy = XOpenDisplay(0);
179 if(!dpy)
180 eprint("dwm: cannot connect X server\n");
182 screen = DefaultScreen(dpy);
183 root = RootWindow(dpy, screen);
185 /* check if another WM is already running */
186 otherwm = False;
187 XSetErrorHandler(xerrorstart);
188 /* this causes an error if some other WM is running */
189 XSelectInput(dpy, root, SubstructureRedirectMask);
190 XSync(dpy, False);
192 if(otherwm)
193 eprint("dwm: another window manager is already running\n");
195 XSetErrorHandler(NULL);
196 xerrorxlib = XSetErrorHandler(xerror);
198 /* init atoms */
199 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
200 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
201 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
202 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
203 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
204 PropModeReplace, (unsigned char *) netatom, NetLast);
206 /* init cursors */
207 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
208 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
209 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
211 grabkeys();
213 /* style */
214 dc.bg = getcolor(BGCOLOR);
215 dc.fg = getcolor(FGCOLOR);
216 dc.border = getcolor(BORDERCOLOR);
217 setfont(FONT);
219 sx = sy = 0;
220 sw = DisplayWidth(dpy, screen);
221 sh = DisplayHeight(dpy, screen);
222 mw = (sw * MASTERW) / 100;
224 wa.override_redirect = 1;
225 wa.background_pixmap = ParentRelative;
226 wa.event_mask = ButtonPressMask | ExposureMask;
228 bx = by = 0;
229 bw = sw;
230 dc.h = bh = dc.font.height + 4;
231 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
232 CopyFromParent, DefaultVisual(dpy, screen),
233 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
234 XDefineCursor(dpy, barwin, cursor[CurNormal]);
235 XMapRaised(dpy, barwin);
237 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
238 dc.gc = XCreateGC(dpy, root, 0, 0);
239 drawstatus();
241 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
243 wa.event_mask = SubstructureRedirectMask | EnterWindowMask | LeaveWindowMask;
244 wa.cursor = cursor[CurNormal];
245 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
247 strcpy(stext, "dwm-"VERSION);
248 scan();
250 /* main event loop, reads status text from stdin as well */
251 while(running) {
252 FD_ZERO(&rd);
253 if(readin)
254 FD_SET(STDIN_FILENO, &rd);
255 FD_SET(ConnectionNumber(dpy), &rd);
257 i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0);
258 if(i == -1 && errno == EINTR)
259 continue;
260 if(i < 0)
261 eprint("select failed\n");
262 else if(i > 0) {
263 if(FD_ISSET(ConnectionNumber(dpy), &rd)) {
264 while(XPending(dpy)) {
265 XNextEvent(dpy, &ev);
266 if(handler[ev.type])
267 (handler[ev.type])(&ev); /* call handler */
268 }
269 }
270 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
271 readin = NULL != fgets(stext, sizeof(stext), stdin);
272 if(readin)
273 stext[strlen(stext) - 1] = 0;
274 else
275 strcpy(stext, "broken pipe");
276 drawstatus();
277 }
278 }
279 }
281 cleanup();
282 XCloseDisplay(dpy);
284 return 0;
285 }