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annotate main.c @ 461:9d23330a5268

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removed a bunch of lines through making function signatures more consistent with my style ( { does not belong to a new line, if function args are single-lined)
author Anselm R. Garbe <arg@10kloc.org>
date Tue, 12 Sep 2006 10:57:28 +0200
parents 81fcd7ddafee
children 2d8af0d7920d
rev   line source
garbeam@0 1 /*
garbeam@0 2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
garbeam@0 3 * See LICENSE file for license details.
garbeam@0 4 */
garbeam@0 5
garbeam@76 6 #include "dwm.h"
garbeam@59 7 #include <errno.h>
garbeam@0 8 #include <stdio.h>
garbeam@0 9 #include <stdlib.h>
garbeam@57 10 #include <string.h>
garbeam@59 11 #include <unistd.h>
arg@138 12 #include <sys/select.h>
garbeam@0 13 #include <X11/cursorfont.h>
arg@291 14 #include <X11/keysym.h>
garbeam@0 15 #include <X11/Xatom.h>
garbeam@0 16 #include <X11/Xproto.h>
garbeam@0 17
arg@333 18 /* extern */
arg@333 19
arg@333 20 char stext[1024];
arg@333 21 Bool *seltag;
arg@362 22 int bx, by, bw, bh, bmw, mw, screen, sx, sy, sw, sh;
arg@362 23 unsigned int ntags, numlockmask;
arg@333 24 Atom wmatom[WMLast], netatom[NetLast];
arg@333 25 Bool running = True;
arg@333 26 Bool issel = True;
arg@400 27 Bool maximized = False;
arg@333 28 Client *clients = NULL;
arg@333 29 Client *sel = NULL;
arg@446 30 Client *stack = NULL;
arg@333 31 Cursor cursor[CurLast];
arg@333 32 Display *dpy;
arg@333 33 DC dc = {0};
arg@333 34 Window root, barwin;
arg@333 35
garbeam@84 36 /* static */
garbeam@0 37
arg@123 38 static int (*xerrorxlib)(Display *, XErrorEvent *);
arg@302 39 static Bool otherwm, readin;
garbeam@0 40
garbeam@0 41 static void
arg@461 42 cleanup() {
arg@302 43 close(STDIN_FILENO);
garbeam@76 44 while(sel) {
arg@99 45 resize(sel, True, TopLeft);
garbeam@76 46 unmanage(sel);
garbeam@76 47 }
arg@295 48 if(dc.font.set)
arg@295 49 XFreeFontSet(dpy, dc.font.set);
arg@295 50 else
arg@295 51 XFreeFont(dpy, dc.font.xfont);
arg@292 52 XUngrabKey(dpy, AnyKey, AnyModifier, root);
arg@295 53 XFreePixmap(dpy, dc.drawable);
arg@295 54 XFreeGC(dpy, dc.gc);
arg@309 55 XDestroyWindow(dpy, barwin);
garbeam@76 56 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
arg@292 57 XSync(dpy, False);
arg@433 58 free(seltag);
garbeam@76 59 }
garbeam@0 60
garbeam@0 61 static void
arg@461 62 scan() {
garbeam@0 63 unsigned int i, num;
arg@123 64 Window *wins, d1, d2;
garbeam@0 65 XWindowAttributes wa;
garbeam@0 66
arg@292 67 wins = NULL;
garbeam@0 68 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
garbeam@0 69 for(i = 0; i < num; i++) {
garbeam@0 70 if(!XGetWindowAttributes(dpy, wins[i], &wa))
garbeam@0 71 continue;
garbeam@0 72 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
garbeam@0 73 continue;
garbeam@0 74 if(wa.map_state == IsViewable)
garbeam@10 75 manage(wins[i], &wa);
garbeam@0 76 }
garbeam@0 77 }
garbeam@0 78 if(wins)
garbeam@0 79 XFree(wins);
garbeam@0 80 }
garbeam@0 81
arg@333 82 static void
arg@461 83 setup() {
arg@333 84 int i, j;
arg@333 85 unsigned int mask;
arg@333 86 Window w;
arg@333 87 XModifierKeymap *modmap;
arg@333 88 XSetWindowAttributes wa;
arg@333 89
arg@333 90 /* init atoms */
arg@333 91 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
arg@333 92 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
arg@333 93 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
arg@333 94 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
arg@333 95 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
arg@333 96 PropModeReplace, (unsigned char *) netatom, NetLast);
arg@333 97
arg@333 98 /* init cursors */
arg@333 99 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
arg@333 100 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
arg@333 101 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
arg@333 102
arg@333 103 modmap = XGetModifierMapping(dpy);
arg@333 104 for (i = 0; i < 8; i++) {
arg@333 105 for (j = 0; j < modmap->max_keypermod; j++) {
arg@333 106 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
arg@333 107 numlockmask = (1 << i);
arg@333 108 }
arg@333 109 }
arg@333 110 XFree(modmap);
arg@333 111
arg@461 112 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
arg@461 113 | EnterWindowMask | LeaveWindowMask;
arg@333 114 wa.cursor = cursor[CurNormal];
arg@333 115 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
arg@333 116
arg@333 117 grabkeys();
arg@333 118 initrregs();
arg@333 119
arg@333 120 for(ntags = 0; tags[ntags]; ntags++);
arg@333 121 seltag = emallocz(sizeof(Bool) * ntags);
arg@333 122 seltag[0] = True;
arg@333 123
arg@333 124 /* style */
arg@353 125 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
arg@353 126 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
arg@353 127 dc.sel[ColBG] = getcolor(SELBGCOLOR);
arg@353 128 dc.sel[ColFG] = getcolor(SELFGCOLOR);
arg@353 129 dc.status[ColBG] = getcolor(STATUSBGCOLOR);
arg@353 130 dc.status[ColFG] = getcolor(STATUSFGCOLOR);
arg@333 131 setfont(FONT);
arg@333 132
arg@362 133 bmw = textw(FLOATSYMBOL) > textw(TILESYMBOL) ? textw(FLOATSYMBOL) : textw(TILESYMBOL);
arg@333 134 sx = sy = 0;
arg@333 135 sw = DisplayWidth(dpy, screen);
arg@333 136 sh = DisplayHeight(dpy, screen);
arg@333 137 mw = (sw * MASTERW) / 100;
arg@333 138
arg@333 139 bx = by = 0;
arg@333 140 bw = sw;
arg@353 141 dc.h = bh = dc.font.height + 2;
arg@333 142 wa.override_redirect = 1;
arg@333 143 wa.background_pixmap = ParentRelative;
arg@333 144 wa.event_mask = ButtonPressMask | ExposureMask;
arg@333 145 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
arg@333 146 CopyFromParent, DefaultVisual(dpy, screen),
arg@333 147 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
arg@333 148 XDefineCursor(dpy, barwin, cursor[CurNormal]);
arg@333 149 XMapRaised(dpy, barwin);
arg@333 150
arg@333 151 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
arg@333 152 dc.gc = XCreateGC(dpy, root, 0, 0);
arg@344 153 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
arg@333 154
arg@333 155 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
arg@333 156 strcpy(stext, "dwm-"VERSION);
arg@333 157 }
arg@333 158
garbeam@76 159 /*
garbeam@76 160 * Startup Error handler to check if another window manager
garbeam@76 161 * is already running.
garbeam@76 162 */
garbeam@76 163 static int
arg@461 164 xerrorstart(Display *dsply, XErrorEvent *ee) {
garbeam@76 165 otherwm = True;
garbeam@76 166 return -1;
garbeam@76 167 }
garbeam@76 168
garbeam@84 169 /* extern */
garbeam@84 170
garbeam@13 171 int
arg@461 172 getproto(Window w) {
arg@329 173 int i, format, protos, status;
arg@328 174 unsigned long extra, res;
arg@328 175 Atom *protocols, real;
garbeam@13 176
arg@329 177 protos = 0;
arg@329 178 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
arg@329 179 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
arg@328 180 if(status != Success || protocols == 0)
garbeam@13 181 return protos;
arg@329 182 for(i = 0; i < res; i++)
garbeam@77 183 if(protocols[i] == wmatom[WMDelete])
arg@157 184 protos |= PROTODELWIN;
arg@328 185 free(protocols);
garbeam@13 186 return protos;
garbeam@13 187 }
garbeam@13 188
garbeam@13 189 void
arg@461 190 sendevent(Window w, Atom a, long value) {
garbeam@13 191 XEvent e;
garbeam@13 192
garbeam@13 193 e.type = ClientMessage;
garbeam@13 194 e.xclient.window = w;
garbeam@13 195 e.xclient.message_type = a;
garbeam@13 196 e.xclient.format = 32;
garbeam@13 197 e.xclient.data.l[0] = value;
garbeam@13 198 e.xclient.data.l[1] = CurrentTime;
garbeam@13 199 XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@79 200 XSync(dpy, False);
garbeam@13 201 }
garbeam@13 202
garbeam@76 203 void
arg@461 204 quit(Arg *arg) {
arg@302 205 readin = running = False;
garbeam@75 206 }
garbeam@75 207
garbeam@75 208 /*
garbeam@84 209 * There's no way to check accesses to destroyed windows, thus those cases are
garbeam@84 210 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
arg@455 211 * default error handler, which may call exit.
garbeam@0 212 */
garbeam@10 213 int
arg@461 214 xerror(Display *dpy, XErrorEvent *ee) {
garbeam@75 215 if(ee->error_code == BadWindow
arg@123 216 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
arg@123 217 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
arg@123 218 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
arg@123 219 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
arg@123 220 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
arg@458 221 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
arg@458 222 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
garbeam@0 223 return 0;
garbeam@34 224 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
arg@123 225 ee->request_code, ee->error_code);
arg@455 226 return xerrorxlib(dpy, ee); /* may call exit */
garbeam@27 227 }
garbeam@27 228
garbeam@0 229 int
arg@461 230 main(int argc, char *argv[]) {
arg@333 231 int r, xfd;
garbeam@59 232 fd_set rd;
garbeam@0 233
arg@137 234 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
arg@137 235 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
arg@137 236 exit(EXIT_SUCCESS);
garbeam@0 237 }
arg@137 238 else if(argc != 1)
arg@137 239 eprint("usage: dwm [-v]\n");
garbeam@0 240
garbeam@0 241 dpy = XOpenDisplay(0);
garbeam@0 242 if(!dpy)
arg@197 243 eprint("dwm: cannot open display\n");
garbeam@0 244
arg@265 245 xfd = ConnectionNumber(dpy);
garbeam@0 246 screen = DefaultScreen(dpy);
garbeam@0 247 root = RootWindow(dpy, screen);
garbeam@0 248
garbeam@75 249 otherwm = False;
garbeam@75 250 XSetErrorHandler(xerrorstart);
arg@197 251 /* this causes an error if some other window manager is running */
garbeam@0 252 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@78 253 XSync(dpy, False);
garbeam@0 254
garbeam@75 255 if(otherwm)
garbeam@75 256 eprint("dwm: another window manager is already running\n");
garbeam@0 257
arg@292 258 XSync(dpy, False);
garbeam@78 259 XSetErrorHandler(NULL);
garbeam@75 260 xerrorxlib = XSetErrorHandler(xerror);
arg@275 261 XSync(dpy, False);
garbeam@0 262
arg@333 263 setup();
garbeam@74 264 drawstatus();
garbeam@75 265 scan();
garbeam@3 266
arg@214 267 /* main event loop, also reads status text from stdin */
arg@242 268 XSync(dpy, False);
arg@292 269 procevent();
arg@302 270 readin = True;
garbeam@5 271 while(running) {
garbeam@59 272 FD_ZERO(&rd);
arg@164 273 if(readin)
arg@164 274 FD_SET(STDIN_FILENO, &rd);
arg@265 275 FD_SET(xfd, &rd);
arg@333 276 r = select(xfd + 1, &rd, NULL, NULL, NULL);
arg@333 277 if((r == -1) && (errno == EINTR))
garbeam@59 278 continue;
arg@333 279 if(r > 0) {
arg@164 280 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
arg@164 281 readin = NULL != fgets(stext, sizeof(stext), stdin);
arg@164 282 if(readin)
arg@164 283 stext[strlen(stext) - 1] = 0;
arg@162 284 else
arg@164 285 strcpy(stext, "broken pipe");
garbeam@74 286 drawstatus();
garbeam@59 287 }
garbeam@59 288 }
arg@333 289 else if(r < 0)
arg@316 290 eprint("select failed\n");
arg@293 291 procevent();
garbeam@5 292 }
garbeam@0 293 cleanup();
garbeam@0 294 XCloseDisplay(dpy);
garbeam@0 295
garbeam@0 296 return 0;
garbeam@0 297 }