dwm-meillo
view main.c @ 512:aca04c3022c1
fixed the z-layer issue described on mailinglist
| author | Anselm R. Garbe <arg@10kloc.org> |
|---|---|
| date | Fri, 29 Sep 2006 17:12:57 +0200 |
| parents | 2c29d74b11dc |
| children | d6d1d0033e3c |
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/keysym.h>
15 #include <X11/Xatom.h>
16 #include <X11/Xproto.h>
18 /* extern */
20 char stext[1024];
21 Bool *seltag;
22 int bx, by, bw, bh, bmw, master, screen, sx, sy, sw, sh;
23 unsigned int ntags, numlockmask;
24 Atom wmatom[WMLast], netatom[NetLast];
25 Bool running = True;
26 Bool issel = True;
27 Client *clients = NULL;
28 Client *sel = NULL;
29 Client *stack = NULL;
30 Cursor cursor[CurLast];
31 Display *dpy;
32 DC dc = {0};
33 Window root, barwin;
35 /* static */
37 static int (*xerrorxlib)(Display *, XErrorEvent *);
38 static Bool otherwm, readin;
40 static void
41 cleanup(void) {
42 close(STDIN_FILENO);
43 while(sel) {
44 resize(sel, True, TopLeft);
45 unmanage(sel);
46 }
47 if(dc.font.set)
48 XFreeFontSet(dpy, dc.font.set);
49 else
50 XFreeFont(dpy, dc.font.xfont);
51 XUngrabKey(dpy, AnyKey, AnyModifier, root);
52 XFreePixmap(dpy, dc.drawable);
53 XFreeGC(dpy, dc.gc);
54 XDestroyWindow(dpy, barwin);
55 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
56 XSync(dpy, False);
57 free(seltag);
58 }
60 static void
61 scan(void) {
62 unsigned int i, num;
63 Window *wins, d1, d2;
64 XWindowAttributes wa;
66 wins = NULL;
67 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
68 for(i = 0; i < num; i++) {
69 if(!XGetWindowAttributes(dpy, wins[i], &wa))
70 continue;
71 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
72 continue;
73 if(wa.map_state == IsViewable)
74 manage(wins[i], &wa);
75 }
76 }
77 if(wins)
78 XFree(wins);
79 }
81 static void
82 setup(void) {
83 int i, j;
84 unsigned int mask;
85 Window w;
86 XModifierKeymap *modmap;
87 XSetWindowAttributes wa;
89 /* init atoms */
90 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
91 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
92 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
93 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
94 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
95 PropModeReplace, (unsigned char *) netatom, NetLast);
97 /* init cursors */
98 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
99 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
100 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
102 modmap = XGetModifierMapping(dpy);
103 for (i = 0; i < 8; i++) {
104 for (j = 0; j < modmap->max_keypermod; j++) {
105 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
106 numlockmask = (1 << i);
107 }
108 }
109 XFree(modmap);
111 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
112 | EnterWindowMask | LeaveWindowMask;
113 wa.cursor = cursor[CurNormal];
114 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
116 grabkeys();
117 initrregs();
119 for(ntags = 0; tags[ntags]; ntags++);
120 seltag = emallocz(sizeof(Bool) * ntags);
121 seltag[0] = True;
123 /* style */
124 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
125 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
126 dc.sel[ColBG] = getcolor(SELBGCOLOR);
127 dc.sel[ColFG] = getcolor(SELFGCOLOR);
128 dc.status[ColBG] = getcolor(STATUSBGCOLOR);
129 dc.status[ColFG] = getcolor(STATUSFGCOLOR);
130 setfont(FONT);
132 bmw = textw(FLOATSYMBOL) > textw(TILESYMBOL) ? textw(FLOATSYMBOL) : textw(TILESYMBOL);
133 sx = sy = 0;
134 sw = DisplayWidth(dpy, screen);
135 sh = DisplayHeight(dpy, screen);
136 updatemaster();
138 bx = by = 0;
139 bw = sw;
140 dc.h = bh = dc.font.height + 2;
141 wa.override_redirect = 1;
142 wa.background_pixmap = ParentRelative;
143 wa.event_mask = ButtonPressMask | ExposureMask;
144 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
145 CopyFromParent, DefaultVisual(dpy, screen),
146 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
147 XDefineCursor(dpy, barwin, cursor[CurNormal]);
148 XMapRaised(dpy, barwin);
150 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
151 dc.gc = XCreateGC(dpy, root, 0, 0);
152 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
154 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
155 strcpy(stext, "dwm-"VERSION);
156 }
158 /*
159 * Startup Error handler to check if another window manager
160 * is already running.
161 */
162 static int
163 xerrorstart(Display *dsply, XErrorEvent *ee) {
164 otherwm = True;
165 return -1;
166 }
168 /* extern */
170 int
171 getproto(Window w) {
172 int i, format, protos, status;
173 unsigned long extra, res;
174 Atom *protocols, real;
176 protos = 0;
177 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
178 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
179 if(status != Success || protocols == 0)
180 return protos;
181 for(i = 0; i < res; i++)
182 if(protocols[i] == wmatom[WMDelete])
183 protos |= PROTODELWIN;
184 free(protocols);
185 return protos;
186 }
188 void
189 sendevent(Window w, Atom a, long value) {
190 XEvent e;
192 e.type = ClientMessage;
193 e.xclient.window = w;
194 e.xclient.message_type = a;
195 e.xclient.format = 32;
196 e.xclient.data.l[0] = value;
197 e.xclient.data.l[1] = CurrentTime;
198 XSendEvent(dpy, w, False, NoEventMask, &e);
199 XSync(dpy, False);
200 }
202 void
203 quit(Arg *arg) {
204 readin = running = False;
205 }
207 /*
208 * There's no way to check accesses to destroyed windows, thus those cases are
209 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
210 * default error handler, which may call exit.
211 */
212 int
213 xerror(Display *dpy, XErrorEvent *ee) {
214 if(ee->error_code == BadWindow
215 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
216 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
217 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
218 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
219 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
220 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
221 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
222 return 0;
223 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
224 ee->request_code, ee->error_code);
225 return xerrorxlib(dpy, ee); /* may call exit */
226 }
228 int
229 main(int argc, char *argv[]) {
230 int r, xfd;
231 fd_set rd;
233 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
234 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
235 exit(EXIT_SUCCESS);
236 }
237 else if(argc != 1)
238 eprint("usage: dwm [-v]\n");
240 dpy = XOpenDisplay(0);
241 if(!dpy)
242 eprint("dwm: cannot open display\n");
244 xfd = ConnectionNumber(dpy);
245 screen = DefaultScreen(dpy);
246 root = RootWindow(dpy, screen);
248 otherwm = False;
249 XSetErrorHandler(xerrorstart);
250 /* this causes an error if some other window manager is running */
251 XSelectInput(dpy, root, SubstructureRedirectMask);
252 XSync(dpy, False);
254 if(otherwm)
255 eprint("dwm: another window manager is already running\n");
257 XSync(dpy, False);
258 XSetErrorHandler(NULL);
259 xerrorxlib = XSetErrorHandler(xerror);
260 XSync(dpy, False);
262 setup();
263 drawstatus();
264 scan();
266 /* main event loop, also reads status text from stdin */
267 XSync(dpy, False);
268 procevent();
269 readin = True;
270 while(running) {
271 FD_ZERO(&rd);
272 if(readin)
273 FD_SET(STDIN_FILENO, &rd);
274 FD_SET(xfd, &rd);
275 r = select(xfd + 1, &rd, NULL, NULL, NULL);
276 if((r == -1) && (errno == EINTR))
277 continue;
278 if(r > 0) {
279 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
280 readin = NULL != fgets(stext, sizeof(stext), stdin);
281 if(readin)
282 stext[strlen(stext) - 1] = 0;
283 else
284 strcpy(stext, "broken pipe");
285 drawstatus();
286 }
287 }
288 else if(r < 0)
289 eprint("select failed\n");
290 procevent();
291 }
292 cleanup();
293 XCloseDisplay(dpy);
295 return 0;
296 }