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comparison main.c @ 2:de6bb7885c97

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add right-click eventon layout icon to go to previous layout
author pang@hit-nxdomain.opendns.com
date Tue, 24 Mar 2009 12:52:45 -0700
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children faa4cb9d7bd6
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-1:000000000000 0:8f2deb0d9790
1 /* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
2 * See LICENSE file for license details.
3 */
4
5 #include "dwm.h"
6 #include <errno.h>
7 #include <locale.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>
17
18 /* extern */
19
20 char stext[256];
21 int screen, sx, sy, sw, sh, wax, way, waw, wah;
22 unsigned int bh, ntags, numlockmask;
23 Atom wmatom[WMLast], netatom[NetLast];
24 Bool *seltag;
25 Bool selscreen = True;
26 Client *clients = NULL;
27 Client *sel = NULL;
28 Client *stack = NULL;
29 Cursor cursor[CurLast];
30 Display *dpy;
31 DC dc = {0};
32 Window root, barwin;
33
34 /* static */
35
36 static int (*xerrorxlib)(Display *, XErrorEvent *);
37 static Bool otherwm, readin;
38 static Bool running = True;
39
40 static void
41 cleanup(void) {
42 close(STDIN_FILENO);
43 while(stack) {
44 if(stack->isbanned)
45 XMoveWindow(dpy, stack->win, stack->x, stack->y);
46 unmanage(stack);
47 }
48 if(dc.font.set)
49 XFreeFontSet(dpy, dc.font.set);
50 else
51 XFreeFont(dpy, dc.font.xfont);
52 XUngrabKey(dpy, AnyKey, AnyModifier, root);
53 XFreePixmap(dpy, dc.drawable);
54 XFreeGC(dpy, dc.gc);
55 XDestroyWindow(dpy, barwin);
56 XFreeCursor(dpy, cursor[CurNormal]);
57 XFreeCursor(dpy, cursor[CurResize]);
58 XFreeCursor(dpy, cursor[CurMove]);
59 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
60 XSync(dpy, False);
61 free(seltag);
62 }
63
64 static unsigned long
65 initcolor(const char *colstr) {
66 Colormap cmap = DefaultColormap(dpy, screen);
67 XColor color;
68
69 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
70 eprint("error, cannot allocate color '%s'\n", colstr);
71 return color.pixel;
72 }
73
74 static void
75 initfont(const char *fontstr) {
76 char *def, **missing;
77 int i, n;
78
79 missing = NULL;
80 if(dc.font.set)
81 XFreeFontSet(dpy, dc.font.set);
82 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
83 if(missing) {
84 while(n--)
85 fprintf(stderr, "missing fontset: %s\n", missing[n]);
86 XFreeStringList(missing);
87 }
88 if(dc.font.set) {
89 XFontSetExtents *font_extents;
90 XFontStruct **xfonts;
91 char **font_names;
92 dc.font.ascent = dc.font.descent = 0;
93 font_extents = XExtentsOfFontSet(dc.font.set);
94 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
95 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
96 if(dc.font.ascent < (*xfonts)->ascent)
97 dc.font.ascent = (*xfonts)->ascent;
98 if(dc.font.descent < (*xfonts)->descent)
99 dc.font.descent = (*xfonts)->descent;
100 xfonts++;
101 }
102 }
103 else {
104 if(dc.font.xfont)
105 XFreeFont(dpy, dc.font.xfont);
106 dc.font.xfont = NULL;
107 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr)))
108 eprint("error, cannot load font: '%s'\n", fontstr);
109 dc.font.ascent = dc.font.xfont->ascent;
110 dc.font.descent = dc.font.xfont->descent;
111 }
112 dc.font.height = dc.font.ascent + dc.font.descent;
113 }
114
115 static void
116 scan(void) {
117 unsigned int i, num;
118 Window *wins, d1, d2;
119 XWindowAttributes wa;
120
121 wins = NULL;
122 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
123 for(i = 0; i < num; i++) {
124 if(!XGetWindowAttributes(dpy, wins[i], &wa)
125 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
126 continue;
127 if(wa.map_state == IsViewable)
128 manage(wins[i], &wa);
129 }
130 }
131 if(wins)
132 XFree(wins);
133 }
134
135 static void
136 setup(void) {
137 int i, j;
138 unsigned int mask;
139 Window w;
140 XModifierKeymap *modmap;
141 XSetWindowAttributes wa;
142
143 /* init atoms */
144 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
145 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
146 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
147 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
148 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
149 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
150 PropModeReplace, (unsigned char *) netatom, NetLast);
151 /* init cursors */
152 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
153 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
154 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
155 /* init modifier map */
156 numlockmask = 0;
157 modmap = XGetModifierMapping(dpy);
158 for (i = 0; i < 8; i++)
159 for (j = 0; j < modmap->max_keypermod; j++) {
160 if(modmap->modifiermap[i * modmap->max_keypermod + j]
161 == XKeysymToKeycode(dpy, XK_Num_Lock))
162 numlockmask = (1 << i);
163 }
164 XFreeModifiermap(modmap);
165 /* select for events */
166 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
167 | EnterWindowMask | LeaveWindowMask;
168 wa.cursor = cursor[CurNormal];
169 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
170 grabkeys();
171 compileregs();
172 for(ntags = 0; tags[ntags]; ntags++);
173 seltag = emallocz(sizeof(Bool) * ntags);
174 seltag[0] = True;
175 /* style */
176 dc.norm[ColBorder] = initcolor(NORMBORDERCOLOR);
177 dc.norm[ColBG] = initcolor(NORMBGCOLOR);
178 dc.norm[ColFG] = initcolor(NORMFGCOLOR);
179 dc.sel[ColBorder] = initcolor(SELBORDERCOLOR);
180 dc.sel[ColBG] = initcolor(SELBGCOLOR);
181 dc.sel[ColFG] = initcolor(SELFGCOLOR);
182 initfont(FONT);
183 /* geometry */
184 sx = sy = 0;
185 sw = DisplayWidth(dpy, screen);
186 sh = DisplayHeight(dpy, screen);
187 initlayouts();
188 /* bar */
189 dc.h = bh = dc.font.height + 2;
190 wa.override_redirect = 1;
191 wa.background_pixmap = ParentRelative;
192 wa.event_mask = ButtonPressMask | ExposureMask;
193 barwin = XCreateWindow(dpy, root, sx, sy + (TOPBAR ? 0 : sh - bh), sw, bh, 0,
194 DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
195 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
196 XDefineCursor(dpy, barwin, cursor[CurNormal]);
197 XMapRaised(dpy, barwin);
198 strcpy(stext, "dwm-"VERSION);
199 /* windowarea */
200 wax = sx;
201 way = sy + (TOPBAR ? bh : 0);
202 wah = sh - bh;
203 waw = sw;
204 /* pixmap for everything */
205 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
206 dc.gc = XCreateGC(dpy, root, 0, 0);
207 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
208 /* multihead support */
209 selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
210 }
211
212 /*
213 * Startup Error handler to check if another window manager
214 * is already running.
215 */
216 static int
217 xerrorstart(Display *dsply, XErrorEvent *ee) {
218 otherwm = True;
219 return -1;
220 }
221
222 /* extern */
223
224 void
225 sendevent(Window w, Atom a, long value) {
226 XEvent e;
227
228 e.type = ClientMessage;
229 e.xclient.window = w;
230 e.xclient.message_type = a;
231 e.xclient.format = 32;
232 e.xclient.data.l[0] = value;
233 e.xclient.data.l[1] = CurrentTime;
234 XSendEvent(dpy, w, False, NoEventMask, &e);
235 XSync(dpy, False);
236 }
237
238 void
239 quit(Arg *arg) {
240 readin = running = False;
241 }
242
243 /* There's no way to check accesses to destroyed windows, thus those cases are
244 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
245 * default error handler, which may call exit.
246 */
247 int
248 xerror(Display *dpy, XErrorEvent *ee) {
249 if(ee->error_code == BadWindow
250 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
251 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
252 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
253 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
254 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
255 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
256 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
257 return 0;
258 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
259 ee->request_code, ee->error_code);
260 return xerrorxlib(dpy, ee); /* may call exit */
261 }
262
263 int
264 main(int argc, char *argv[]) {
265 char *p;
266 int r, xfd;
267 fd_set rd;
268 XEvent ev;
269
270 if(argc == 2 && !strncmp("-v", argv[1], 3))
271 eprint("dwm-"VERSION", (C)opyright MMVI-MMVII Anselm R. Garbe\n");
272 else if(argc != 1)
273 eprint("usage: dwm [-v]\n");
274 setlocale(LC_CTYPE, "");
275 if(!(dpy = XOpenDisplay(0)))
276 eprint("dwm: cannot open display\n");
277 xfd = ConnectionNumber(dpy);
278 screen = DefaultScreen(dpy);
279 root = RootWindow(dpy, screen);
280 otherwm = False;
281 XSetErrorHandler(xerrorstart);
282 /* this causes an error if some other window manager is running */
283 XSelectInput(dpy, root, SubstructureRedirectMask);
284 XSync(dpy, False);
285 if(otherwm)
286 eprint("dwm: another window manager is already running\n");
287
288 XSync(dpy, False);
289 XSetErrorHandler(NULL);
290 xerrorxlib = XSetErrorHandler(xerror);
291 XSync(dpy, False);
292 setup();
293 drawstatus();
294 scan();
295
296 /* main event loop, also reads status text from stdin */
297 XSync(dpy, False);
298 readin = True;
299 while(running) {
300 FD_ZERO(&rd);
301 if(readin)
302 FD_SET(STDIN_FILENO, &rd);
303 FD_SET(xfd, &rd);
304 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
305 if(errno == EINTR)
306 continue;
307 eprint("select failed\n");
308 }
309 if(FD_ISSET(STDIN_FILENO, &rd)) {
310 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
311 case -1:
312 strncpy(stext, strerror(errno), sizeof stext - 1);
313 stext[sizeof stext - 1] = '\0';
314 readin = False;
315 break;
316 case 0:
317 strncpy(stext, "EOF", 4);
318 readin = False;
319 break;
320 default:
321 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
322 for(; p >= stext && *p != '\n'; --p);
323 if(p > stext)
324 strncpy(stext, p + 1, sizeof stext);
325 }
326 drawstatus();
327 }
328 if(FD_ISSET(xfd, &rd))
329 while(XPending(dpy)) {
330 XNextEvent(dpy, &ev);
331 if(handler[ev.type])
332 (handler[ev.type])(&ev); /* call handler */
333 }
334 }
335 cleanup();
336 XCloseDisplay(dpy);
337 return 0;
338 }