aewl: 498b86c72a40 main.c

aewl

view main.c @ 659:498b86c72a40

preserving c1->snext and c2->snext in swap() as well.

author	Anselm R. Garbe <arg@suckless.org>
date	Fri, 05 Jan 2007 21:52:17 +0100
parents	8e6d75c68b69
children	5d79c351e30a

line source

1 /* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>

2 * See LICENSE file for license details.

3 */

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>

18 /* extern */

20 char stext[1024];

21 Bool *seltag;

22 int bx, by, bw, bh, bmw, masterd, screen, sx, sy, sw, sh, wax, way, waw, wah;

23 unsigned int master, nmaster, 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(stack) {

44 resize(stack, True, TopLeft);

45 unmanage(stack);

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 XFreeCursor(dpy, cursor[CurNormal]);

56 XFreeCursor(dpy, cursor[CurResize]);

57 XFreeCursor(dpy, cursor[CurMove]);

58 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);

59 XSync(dpy, False);

60 free(seltag);

61 }

63 static void

64 scan(void) {

65 unsigned int i, num;

66 Window *wins, d1, d2;

67 XWindowAttributes wa;

69 wins = NULL;

70 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {

71 for(i = 0; i < num; i++) {

72 if(!XGetWindowAttributes(dpy, wins[i], &wa))

73 continue;

74 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))

75 continue;

76 if(wa.map_state == IsViewable)

77 manage(wins[i], &wa);

78 }

79 }

80 if(wins)

81 XFree(wins);

82 }

84 static void

85 setup(void) {

86 int i, j;

87 unsigned int mask;

88 Window w;

89 XModifierKeymap *modmap;

90 XSetWindowAttributes wa;

92 /* init atoms */

93 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);

94 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);

95 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);

96 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);

97 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,

98 PropModeReplace, (unsigned char *) netatom, NetLast);

99 /* init cursors */

100 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);

101 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);

102 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);

103 /* init modifier map */

104 modmap = XGetModifierMapping(dpy);

105 for (i = 0; i < 8; i++) {

106 for (j = 0; j < modmap->max_keypermod; j++) {

107 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))

108 numlockmask = (1 << i);

109 }

110 }

111 XFreeModifiermap(modmap);

112 /* select for events */

113 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask

114 | EnterWindowMask | LeaveWindowMask;

115 wa.cursor = cursor[CurNormal];

116 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);

117 grabkeys();

118 initrregs();

119 for(ntags = 0; tags[ntags]; ntags++);

120 seltag = emallocz(sizeof(Bool) * ntags);

121 seltag[0] = True;

122 /* style */

123 dc.norm[ColBG] = getcolor(NORMBGCOLOR);

124 dc.norm[ColFG] = getcolor(NORMFGCOLOR);

125 dc.sel[ColBG] = getcolor(SELBGCOLOR);

126 dc.sel[ColFG] = getcolor(SELFGCOLOR);

127 dc.status[ColBG] = getcolor(STATUSBGCOLOR);

128 dc.status[ColFG] = getcolor(STATUSFGCOLOR);

129 setfont(FONT);

130 /* geometry */

131 bmw = textw(TILESYMBOL) > textw(FLOATSYMBOL) ? textw(TILESYMBOL) : textw(FLOATSYMBOL);

132 sx = sy = 0;

133 sw = DisplayWidth(dpy, screen);

134 sh = DisplayHeight(dpy, screen);

135 master = MASTER;

136 nmaster = NMASTER;

137 /* bar */

138 bx = sx;

139 by = sy;

140 bw = sw;

141 dc.h = bh = dc.font.height + 2;

142 wa.override_redirect = 1;

143 wa.background_pixmap = ParentRelative;

144 wa.event_mask = ButtonPressMask | ExposureMask;

145 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),

146 CopyFromParent, DefaultVisual(dpy, screen),

147 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);

148 XDefineCursor(dpy, barwin, cursor[CurNormal]);

149 XMapRaised(dpy, barwin);

150 strcpy(stext, "dwm-"VERSION);

151 /* windowarea */

152 wax = sx;

153 way = sy + bh;

154 wah = sh - bh;

155 waw = sw;

156 /* pixmap for everything */

157 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));

158 dc.gc = XCreateGC(dpy, root, 0, 0);

159 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);

160 /* multihead support */

161 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);

162 }

163

164 /*

165 * Startup Error handler to check if another window manager

166 * is already running.

167 */

168 static int

169 xerrorstart(Display *dsply, XErrorEvent *ee) {

170 otherwm = True;

171 return -1;

172 }

173

174 /* extern */

175

176 int

177 getproto(Window w) {

178 int i, format, protos, status;

179 unsigned long extra, res;

180 Atom *protocols, real;

181

182 protos = 0;

183 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,

184 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);

185 if(status != Success || protocols == 0)

186 return protos;

187 for(i = 0; i < res; i++)

188 if(protocols[i] == wmatom[WMDelete])

189 protos |= PROTODELWIN;

190 free(protocols);

191 return protos;

192 }

193

194 void

195 sendevent(Window w, Atom a, long value) {

196 XEvent e;

197

198 e.type = ClientMessage;

199 e.xclient.window = w;

200 e.xclient.message_type = a;

201 e.xclient.format = 32;

202 e.xclient.data.l[0] = value;

203 e.xclient.data.l[1] = CurrentTime;

204 XSendEvent(dpy, w, False, NoEventMask, &e);

205 XSync(dpy, False);

206 }

207

208 void

209 quit(Arg *arg) {

210 readin = running = False;

211 }

212

213 /* There's no way to check accesses to destroyed windows, thus those cases are

214 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs

215 * default error handler, which may call exit.

216 */

217 int

218 xerror(Display *dpy, XErrorEvent *ee) {

219 if(ee->error_code == BadWindow

220 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)

221 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)

222 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)

223 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)

224 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)

225 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)

226 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))

227 return 0;

228 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",

229 ee->request_code, ee->error_code);

230 return xerrorxlib(dpy, ee); /* may call exit */

231 }

232

233 int

234 main(int argc, char *argv[]) {

235 char *p;

236 int r, xfd;

237 fd_set rd;

238

239 if(argc == 2 && !strncmp("-v", argv[1], 3)) {

240 fputs("dwm-"VERSION", (C)opyright MMVI-MMVII Anselm R. Garbe\n", stdout);

241 exit(EXIT_SUCCESS);

242 }

243 else if(argc != 1)

244 eprint("usage: dwm [-v]\n");

245 setlocale(LC_CTYPE, "");

246 dpy = XOpenDisplay(0);

247 if(!dpy)

248 eprint("dwm: cannot open display\n");

249 xfd = ConnectionNumber(dpy);

250 screen = DefaultScreen(dpy);

251 root = RootWindow(dpy, screen);

252 otherwm = False;

253 XSetErrorHandler(xerrorstart);

254 /* this causes an error if some other window manager is running */

255 XSelectInput(dpy, root, SubstructureRedirectMask);

256 XSync(dpy, False);

257 if(otherwm)

258 eprint("dwm: another window manager is already running\n");

259

260 XSync(dpy, False);

261 XSetErrorHandler(NULL);

262 xerrorxlib = XSetErrorHandler(xerror);

263 XSync(dpy, False);

264 setup();

265 drawstatus();

266 scan();

267

268 /* main event loop, also reads status text from stdin */

269 XSync(dpy, False);

270 procevent();

271 readin = True;

272 while(running) {

273 FD_ZERO(&rd);

274 if(readin)

275 FD_SET(STDIN_FILENO, &rd);

276 FD_SET(xfd, &rd);

277 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {

278 if(errno == EINTR)

279 continue;

280 eprint("select failed\n");

281 }

282 if(FD_ISSET(STDIN_FILENO, &rd)) {

283 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {

284 case -1:

285 strncpy(stext, strerror(errno), sizeof stext - 1);

286 stext[sizeof stext - 1] = '\0';

287 readin = False;

288 break;

289 case 0:

290 strncpy(stext, "EOF", 4);

291 readin = False;

292 break;

293 default:

294 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');

295 for(p = stext + strlen(stext) - 1; p >= stext && *p != '\n'; --p);

296 if(p > stext)

297 strncpy(stext, p + 1, sizeof stext);

298 }

299 drawstatus();

300 }

301 if(FD_ISSET(xfd, &rd))

302 procevent();

303 }

304 cleanup();

305 XCloseDisplay(dpy);

306 return 0;

307 }