aewl: 651f2c868b31 main.c

aewl

view main.c @ 532:651f2c868b31

code polishing, removed unnecessary newlines

author	Anselm R. Garbe <arg@10kloc.org>
date	Fri, 06 Oct 2006 11:50:15 +0200
parents	451f19d48845
children	fe766305eed1

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;

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 = by = 0;

134 bw = sw;

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

136 wa.override_redirect = 1;

137 wa.background_pixmap = ParentRelative;

138 wa.event_mask = ButtonPressMask | ExposureMask;

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

140 CopyFromParent, DefaultVisual(dpy, screen),

141 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);

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

143 XMapRaised(dpy, barwin);

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

145 /* pixmap for everything */

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

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

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

149 /* multihead support */

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

151 }

152

153 /*

154 * Startup Error handler to check if another window manager

155 * is already running.

156 */

157 static int

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

159 otherwm = True;

160 return -1;

161 }

162

163 /* extern */

164

165 int

166 getproto(Window w) {

167 int i, format, protos, status;

168 unsigned long extra, res;

169 Atom *protocols, real;

170

171 protos = 0;

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

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

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

175 return protos;

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

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

178 protos |= PROTODELWIN;

179 free(protocols);

180 return protos;

181 }

182

183 void

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

185 XEvent e;

186

187 e.type = ClientMessage;

188 e.xclient.window = w;

189 e.xclient.message_type = a;

190 e.xclient.format = 32;

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

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

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

194 XSync(dpy, False);

195 }

196

197 void

198 quit(Arg *arg) {

199 readin = running = False;

200 }

201

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

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

204 * default error handler, which may call exit.

205 */

206 int

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

208 if(ee->error_code == BadWindow

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

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

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

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

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

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

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

216 return 0;

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

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

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

220 }

221

222 int

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

224 int r, xfd;

225 fd_set rd;

226

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

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

229 exit(EXIT_SUCCESS);

230 }

231 else if(argc != 1)

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

233 dpy = XOpenDisplay(0);

234 if(!dpy)

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

236 xfd = ConnectionNumber(dpy);

237 screen = DefaultScreen(dpy);

238 root = RootWindow(dpy, screen);

239 otherwm = False;

240 XSetErrorHandler(xerrorstart);

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

242 XSelectInput(dpy, root, SubstructureRedirectMask);

243 XSync(dpy, False);

244 if(otherwm)

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

246

247 XSync(dpy, False);

248 XSetErrorHandler(NULL);

249 xerrorxlib = XSetErrorHandler(xerror);

250 XSync(dpy, False);

251 setup();

252 drawstatus();

253 scan();

254

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

256 XSync(dpy, False);

257 procevent();

258 readin = True;

259 while(running) {

260 FD_ZERO(&rd);

261 if(readin)

262 FD_SET(STDIN_FILENO, &rd);

263 FD_SET(xfd, &rd);

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

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

266 continue;

267 if(r > 0) {

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

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

270 if(readin)

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

272 else

273 strcpy(stext, "broken pipe");

274 drawstatus();

275 }

276 }

277 else if(r < 0)

278 eprint("select failed\n");

279 procevent();

280 }

281 cleanup();

282 XCloseDisplay(dpy);

283 return 0;

284 }