aewl: f4285a97e3e6 main.c

aewl

view main.c @ 583:f4285a97e3e6

applied Jukka's patch preventing some cornercases and making the EOF error message correct

author	arg@mig29
date	Mon, 27 Nov 2006 10:29:47 +0100
parents	70472540c443
children	f617c75a8405

line source

1 /* (C)opyright MMVI 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 <stdio.h>

8 #include <stdlib.h>

9 #include <string.h>

10 #include <unistd.h>

11 #include <sys/select.h>

12 #include <X11/cursorfont.h>

13 #include <X11/keysym.h>

14 #include <X11/Xatom.h>

15 #include <X11/Xproto.h>

17 /* extern */

19 char stext[1024];

20 Bool *seltag;

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

22 unsigned int master, ntags, numlockmask;

23 Atom wmatom[WMLast], netatom[NetLast];

24 Bool running = True;

25 Bool issel = 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;

34 /* static */

36 static int (*xerrorxlib)(Display *, XErrorEvent *);

37 static Bool otherwm, readin;

39 static void

40 cleanup(void) {

41 close(STDIN_FILENO);

42 while(sel) {

43 resize(sel, True, TopLeft);

44 unmanage(sel);

45 }

46 if(dc.font.set)

47 XFreeFontSet(dpy, dc.font.set);

48 else

49 XFreeFont(dpy, dc.font.xfont);

50 XUngrabKey(dpy, AnyKey, AnyModifier, root);

51 XFreePixmap(dpy, dc.drawable);

52 XFreeGC(dpy, dc.gc);

53 XDestroyWindow(dpy, barwin);

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

55 XSync(dpy, False);

56 free(seltag);

57 }

59 static void

60 scan(void) {

61 unsigned int i, num;

62 Window *wins, d1, d2;

63 XWindowAttributes wa;

65 wins = NULL;

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

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

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

69 continue;

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

71 continue;

72 if(wa.map_state == IsViewable)

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

74 }

75 }

76 if(wins)

77 XFree(wins);

78 }

80 static void

81 setup(void) {

82 int i, j;

83 unsigned int mask;

84 Window w;

85 XModifierKeymap *modmap;

86 XSetWindowAttributes wa;

88 /* init atoms */

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

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

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

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

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

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

95 /* init cursors */

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

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

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

99 /* init modifier map */

100 modmap = XGetModifierMapping(dpy);

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

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

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

104 numlockmask = (1 << i);

105 }

106 }

107 XFree(modmap);

108 /* select for events */

109 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask

110 | EnterWindowMask | LeaveWindowMask;

111 wa.cursor = cursor[CurNormal];

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

113 grabkeys();

114 initrregs();

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

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

117 seltag[0] = True;

118 /* style */

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

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

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

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

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

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

125 setfont(FONT);

126 /* geometry */

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

128 sx = sy = 0;

129 sw = DisplayWidth(dpy, screen);

130 sh = DisplayHeight(dpy, screen);

131 master = MASTER;

132 /* bar */

133 bx = sx;

134 by = sy;

135 bw = sw;

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

137 wa.override_redirect = 1;

138 wa.background_pixmap = ParentRelative;

139 wa.event_mask = ButtonPressMask | ExposureMask;

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

141 CopyFromParent, DefaultVisual(dpy, screen),

142 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);

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

144 XMapRaised(dpy, barwin);

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

146 /* windowarea */

147 wax = sx;

148 way = sy + bh;

149 wah = sh - bh;

150 waw = sw;

151 /* pixmap for everything */

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

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

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

155 /* multihead support */

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

157 }

158

159 /*

160 * Startup Error handler to check if another window manager

161 * is already running.

162 */

163 static int

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

165 otherwm = True;

166 return -1;

167 }

168

169 /* extern */

170

171 int

172 getproto(Window w) {

173 int i, format, protos, status;

174 unsigned long extra, res;

175 Atom *protocols, real;

176

177 protos = 0;

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

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

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

181 return protos;

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

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

184 protos |= PROTODELWIN;

185 free(protocols);

186 return protos;

187 }

188

189 void

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

191 XEvent e;

192

193 e.type = ClientMessage;

194 e.xclient.window = w;

195 e.xclient.message_type = a;

196 e.xclient.format = 32;

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

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

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

200 XSync(dpy, False);

201 }

202

203 void

204 quit(Arg *arg) {

205 readin = running = False;

206 }

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 }

227

228 int

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

230 char *p;

231 int r, xfd;

232 fd_set rd;

233

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

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

236 exit(EXIT_SUCCESS);

237 }

238 else if(argc != 1)

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

240 dpy = XOpenDisplay(0);

241 if(!dpy)

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

243 xfd = ConnectionNumber(dpy);

244 screen = DefaultScreen(dpy);

245 root = RootWindow(dpy, screen);

246 otherwm = False;

247 XSetErrorHandler(xerrorstart);

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

249 XSelectInput(dpy, root, SubstructureRedirectMask);

250 XSync(dpy, False);

251 if(otherwm)

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

253

254 XSync(dpy, False);

255 XSetErrorHandler(NULL);

256 xerrorxlib = XSetErrorHandler(xerror);

257 XSync(dpy, False);

258 setup();

259 drawstatus();

260 scan();

261

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

263 XSync(dpy, False);

264 procevent();

265 readin = True;

266 while(running) {

267 FD_ZERO(&rd);

268 if(readin)

269 FD_SET(STDIN_FILENO, &rd);

270 FD_SET(xfd, &rd);

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

272 if(errno == EINTR)

273 continue;

274 eprint("select failed\n");

275 }

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

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

278 case -1:

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

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

281 readin = False;

282 break;

283 case 0:

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

285 readin = False;

286 break;

287 default:

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

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

290 if(p > stext)

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

292 }

293 drawstatus();

294 }

295 if(FD_ISSET(xfd, &rd))

296 procevent();

297 }

298 cleanup();

299 XCloseDisplay(dpy);

300 return 0;

301 }