dwm-meillo: 67f37b93ac73 main.c

dwm-meillo

view main.c @ 425:67f37b93ac73

fixing two off-by-ones

author	Anselm R. Garbe <arg@10kloc.org>
date	Tue, 05 Sep 2006 16:11:52 +0200
parents	ba6c55e1b9b2
children	a6b8994af164

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, mw, 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 Bool maximized = False;

28 Client *clients = NULL;

29 Client *sel = 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()

42 {

43 close(STDIN_FILENO);

44 while(sel) {

45 resize(sel, True, TopLeft);

46 unmanage(sel);

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 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);

57 XSync(dpy, False);

58 }

60 static void

61 scan()

62 {

63 unsigned int i, num;

64 Window *wins, d1, d2;

65 XWindowAttributes wa;

67 wins = NULL;

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

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

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

71 continue;

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

73 continue;

74 if(wa.map_state == IsViewable)

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

76 }

77 }

78 if(wins)

79 XFree(wins);

80 }

82 static void

83 setup()

84 {

85 int i, j;

86 unsigned int mask;

87 Window w;

88 XModifierKeymap *modmap;

89 XSetWindowAttributes wa;

91 /* init atoms */

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

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

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

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

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

97 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

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 XFree(modmap);

112

113 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask | EnterWindowMask | LeaveWindowMask;

114 wa.cursor = cursor[CurNormal];

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

116

117 grabkeys();

118 initrregs();

119

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

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

122 seltag[0] = True;

123

124 /* style */

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

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

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

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

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

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

131 setfont(FONT);

132

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

134 sx = sy = 0;

135 sw = DisplayWidth(dpy, screen);

136 sh = DisplayHeight(dpy, screen);

137 mw = (sw * MASTERW) / 100;

138

139 bx = by = 0;

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

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

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

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

154

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

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

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 {

166 otherwm = True;

167 return -1;

168 }

169

170 /* extern */

171

172 int

173 getproto(Window w)

174 {

175 int i, format, protos, status;

176 unsigned long extra, res;

177 Atom *protocols, real;

178

179 protos = 0;

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

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

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

183 return protos;

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

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

186 protos |= PROTODELWIN;

187 free(protocols);

188 return protos;

189 }

190

191 void

192 sendevent(Window w, Atom a, long value)

193 {

194 XEvent e;

195

196 e.type = ClientMessage;

197 e.xclient.window = w;

198 e.xclient.message_type = a;

199 e.xclient.format = 32;

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

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

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

203 XSync(dpy, False);

204 }

205

206 void

207 quit(Arg *arg)

208 {

209 readin = running = False;

210 }

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 calls exit().

216 */

217 int

218 xerror(Display *dpy, XErrorEvent *ee)

219 {

220 if(ee->error_code == BadWindow

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

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

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

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

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

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

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 {

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 Anselm R. Garbe\n", stdout);

241 exit(EXIT_SUCCESS);

242 }

243 else if(argc != 1)

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

245

246 dpy = XOpenDisplay(0);

247 if(!dpy)

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

249

250 xfd = ConnectionNumber(dpy);

251 screen = DefaultScreen(dpy);

252 root = RootWindow(dpy, screen);

253

254 otherwm = False;

255 XSetErrorHandler(xerrorstart);

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

257 XSelectInput(dpy, root, SubstructureRedirectMask);

258 XSync(dpy, False);

259

260 if(otherwm)

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

262

263 XSync(dpy, False);

264 XSetErrorHandler(NULL);

265 xerrorxlib = XSetErrorHandler(xerror);

266 XSync(dpy, False);

267

268 setup();

269 drawstatus();

270 scan();

271

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

273 XSync(dpy, False);

274 procevent();

275 readin = True;

276 while(running) {

277 FD_ZERO(&rd);

278 if(readin)

279 FD_SET(STDIN_FILENO, &rd);

280 FD_SET(xfd, &rd);

281 r = select(xfd + 1, &rd, NULL, NULL, NULL);

282 if((r == -1) && (errno == EINTR))

283 continue;

284 if(r > 0) {

285 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {

286 readin = NULL != fgets(stext, sizeof(stext), stdin);

287 if(readin)

288 stext[strlen(stext) - 1] = 0;

289 else

290 strcpy(stext, "broken pipe");

291 drawstatus();

292 }

293 }

294 else if(r < 0)

295 eprint("select failed\n");

296 procevent();

297 }

298 cleanup();

299 XCloseDisplay(dpy);

300

301 return 0;

302 }