event.c

   1 #include <stdio.h>
   2 /*
   3  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
   4  * See LICENSE file for license details.
   5  */
   6 #include "dwm.h"
   7 #include <stdlib.h>
   8 #include <X11/keysym.h>
   9 #include <X11/Xatom.h>
  10
  11 /* static */
  12
  13 typedef struct {
  14         unsigned long mod;
  15         KeySym keysym;
  16         void (*func)(Arg *arg);
  17         Arg arg;
  18 } Key;
  19
  20 KEYS
  21
  22 #define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
  23
  24 static void
  25 movemouse(Client *c) {
  26         int x1, y1, ocx, ocy, di;
  27         unsigned int dui;
  28         Window dummy;
  29         XEvent ev;
  30
  31         ocx = c->x;
  32         ocy = c->y;
  33         if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  34                         None, cursor[CurMove], CurrentTime) != GrabSuccess)
  35                 return;
  36         c->ismax = False;
  37         XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  38         for(;;) {
  39                 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
  40                 switch (ev.type) {
  41                 case ButtonRelease:
  42                         resize(c, True, TopLeft);
  43                         XUngrabPointer(dpy, CurrentTime);
  44                         return;
  45                 case Expose:
  46                         handler[Expose](&ev);
  47                         break;
  48                 case MotionNotify:
  49                         XSync(dpy, False);
  50                         c->x = ocx + (ev.xmotion.x - x1);
  51                         c->y = ocy + (ev.xmotion.y - y1);
  52                         resize(c, False, TopLeft);
  53                         break;
  54                 }
  55         }
  56 }
  57
  58 static void
  59 resizemouse(Client *c) {
  60         int ocx, ocy;
  61         int nw, nh;
  62         Corner sticky;
  63         XEvent ev;
  64
  65         ocx = c->x;
  66         ocy = c->y;
  67         if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  68                                 None, cursor[CurResize], CurrentTime) != GrabSuccess)
  69                 return;
  70         c->ismax = False;
  71         XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
  72         for(;;) {
  73                 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
  74                 switch(ev.type) {
  75                 case ButtonRelease:
  76                         resize(c, True, TopLeft);
  77                         XUngrabPointer(dpy, CurrentTime);
  78                         return;
  79                 case Expose:
  80                         handler[Expose](&ev);
  81                         break;
  82                 case MotionNotify:
  83                         XSync(dpy, False);
  84                         if((nw = abs(ocx - ev.xmotion.x)))
  85                                 c->w = nw;
  86                         if((nh = abs(ocy - ev.xmotion.y)))
  87                                 c->h = nh;
  88                         c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
  89                         c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
  90                         if(ocx <= ev.xmotion.x)
  91                                 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
  92                         else
  93                                 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
  94                         resize(c, True, sticky);
  95                         break;
  96                 }
  97         }
  98 }
  99
 100 static void
 101 buttonpress(XEvent *e) {
 102         int x;
 103         Arg a;
 104         Client *c;
 105         XButtonPressedEvent *ev = &e->xbutton;
 106
 107         if(barwin == ev->window) {
 108                 x = 0;
 109                 for(a.i = 0; a.i < ntags; a.i++) {
 110                         x += textw(tags[a.i]);
 111                         if(ev->x < x) {
 112                                 if(ev->button == Button1) {
 113                                         if(ev->state & MODKEY)
 114                                                 tag(&a);
 115                                         else
 116                                                 view(&a);
 117                                 }
 118                                 else if(ev->button == Button3) {
 119                                         if(ev->state & MODKEY)
 120                                                 toggletag(&a);
 121                                         else
 122                                                 toggleview(&a);
 123                                 }
 124                                 return;
 125                         }
 126                 }
 127                 if(ev->x < x + bmw) {
 128                         if(ev->button == Button1)
 129                                 togglemode(NULL);
 130                 }
 131         }
 132         else if((c = getclient(ev->window))) {
 133                 focus(c);
 134                 if(CLEANMASK(ev->state) != MODKEY)
 135                         return;
 136                 if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
 137                         restack();
 138                         movemouse(c);
 139                 }
 140                 else if(ev->button == Button2)
 141                         zoom(NULL);
 142                 else if(ev->button == Button3 && (arrange == dofloat || c->isfloat)) {
 143                         restack();
 144                         resizemouse(c);
 145                 }
 146         }
 147 }
 148
 149 static void
 150 configurerequest(XEvent *e) {
 151         unsigned long newmask;
 152         Client *c;
 153         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 154         XEvent synev;
 155         XWindowChanges wc;
 156
 157         fputs("configurerequest\n", stderr);
 158         if((c = getclient(ev->window))) {
 159                 c->ismax = False;
 160                 gravitate(c, True);
 161                 if(ev->value_mask & CWX)
 162                         c->x = ev->x;
 163                 if(ev->value_mask & CWY)
 164                         c->y = ev->y;
 165                 if(ev->value_mask & CWWidth)
 166                         c->w = ev->width;
 167                 if(ev->value_mask & CWHeight)
 168                         c->h = ev->height;
 169                 if(ev->value_mask & CWBorderWidth)
 170                         c->border = ev->border_width;
 171                 gravitate(c, False);
 172                 wc.x = c->x;
 173                 wc.y = c->y;
 174                 wc.width = c->w;
 175                 wc.height = c->h;
 176                 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
 177                 if(newmask)
 178                         XConfigureWindow(dpy, c->win, newmask, &wc);
 179                 else
 180                         configure(c);
 181                 XSync(dpy, False);
 182                 if(c->isfloat)
 183                         resize(c, False, TopLeft);
 184                 else
 185                         arrange(NULL);
 186         }
 187         else {
 188                 wc.x = ev->x;
 189                 wc.y = ev->y;
 190                 wc.width = ev->width;
 191                 wc.height = ev->height;
 192                 wc.border_width = ev->border_width;
 193                 wc.sibling = ev->above;
 194                 wc.stack_mode = ev->detail;
 195                 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 196                 XSync(dpy, False);
 197         }
 198 }
 199
 200 static void
 201 destroynotify(XEvent *e) {
 202         Client *c;
 203         XDestroyWindowEvent *ev = &e->xdestroywindow;
 204
 205         if((c = getclient(ev->window)))
 206                 unmanage(c);
 207 }
 208
 209 static void
 210 enternotify(XEvent *e) {
 211         Client *c;
 212         XCrossingEvent *ev = &e->xcrossing;
 213
 214         fputs("enternotify\n", stderr);
 215         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 216                 return;
 217
 218         if(((c = getclient(ev->window)) || (c = getctitle(ev->window))) && isvisible(c))
 219                 focus(c);
 220         else if(ev->window == root) {
 221                 issel = True;
 222                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 223                 drawall();
 224         }
 225 }
 226
 227 static void
 228 expose(XEvent *e) {
 229         Client *c;
 230         XExposeEvent *ev = &e->xexpose;
 231
 232         if(ev->count == 0) {
 233                 if(barwin == ev->window)
 234                         drawstatus();
 235                 else if((c = getctitle(ev->window)))
 236                         drawtitle(c);
 237         }
 238 }
 239
 240 static void
 241 keypress(XEvent *e) {
 242         static unsigned int len = sizeof(key) / sizeof(key[0]);
 243         unsigned int i;
 244         KeySym keysym;
 245         XKeyEvent *ev = &e->xkey;
 246
 247         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 248         for(i = 0; i < len; i++) {
 249                 if(keysym == key[i].keysym
 250                         && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
 251                 {
 252                         if(key[i].func)
 253                                 key[i].func(&key[i].arg);
 254                         return;
 255                 }
 256         }
 257 }
 258
 259 static void
 260 leavenotify(XEvent *e) {
 261         XCrossingEvent *ev = &e->xcrossing;
 262
 263         if((ev->window == root) && !ev->same_screen) {
 264                 issel = False;
 265                 drawall();
 266         }
 267 }
 268
 269 static void
 270 mappingnotify(XEvent *e) {
 271         XMappingEvent *ev = &e->xmapping;
 272
 273         XRefreshKeyboardMapping(ev);
 274         if(ev->request == MappingKeyboard)
 275                 grabkeys();
 276 }
 277
 278 static void
 279 maprequest(XEvent *e) {
 280         static XWindowAttributes wa;
 281         XMapRequestEvent *ev = &e->xmaprequest;
 282
 283         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 284                 return;
 285
 286         if(wa.override_redirect) {
 287                 XSelectInput(dpy, ev->window,
 288                                 (StructureNotifyMask | PropertyChangeMask));
 289                 return;
 290         }
 291
 292         if(!getclient(ev->window))
 293                 manage(ev->window, &wa);
 294 }
 295
 296 static void
 297 propertynotify(XEvent *e) {
 298         Client *c;
 299         Window trans;
 300         XPropertyEvent *ev = &e->xproperty;
 301
 302         fputs("propertynotify\n", stderr);
 303         if(ev->state == PropertyDelete)
 304                 return; /* ignore */
 305
 306         if((c = getclient(ev->window))) {
 307                 if(ev->atom == wmatom[WMProtocols]) {
 308                         c->proto = getproto(c->win);
 309                         return;
 310                 }
 311                 switch (ev->atom) {
 312                         default: break;
 313                         case XA_WM_TRANSIENT_FOR:
 314                                 XGetTransientForHint(dpy, c->win, &trans);
 315                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 316                                         arrange(NULL);
 317                                 break;
 318                         case XA_WM_NORMAL_HINTS:
 319                                 updatesize(c);
 320                                 break;
 321                 }
 322                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 323                         updatetitle(c);
 324                         drawtitle(c);
 325                 }
 326         }
 327 }
 328
 329 static void
 330 unmapnotify(XEvent *e) {
 331         Client *c;
 332         XUnmapEvent *ev = &e->xunmap;
 333
 334         if((c = getclient(ev->window)))
 335                 unmanage(c);
 336 }
 337
 338 /* extern */
 339
 340 void (*handler[LASTEvent]) (XEvent *) = {
 341         [ButtonPress] = buttonpress,
 342         [ConfigureRequest] = configurerequest,
 343         [DestroyNotify] = destroynotify,
 344         [EnterNotify] = enternotify,
 345         [LeaveNotify] = leavenotify,
 346         [Expose] = expose,
 347         [KeyPress] = keypress,
 348         [MappingNotify] = mappingnotify,
 349         [MapRequest] = maprequest,
 350         [PropertyNotify] = propertynotify,
 351         [UnmapNotify] = unmapnotify
 352 };
 353
 354 void
 355 grabkeys(void) {
 356         static unsigned int len = sizeof(key) / sizeof(key[0]);
 357         unsigned int i;
 358         KeyCode code;
 359
 360         XUngrabKey(dpy, AnyKey, AnyModifier, root);
 361         for(i = 0; i < len; i++) {
 362                 code = XKeysymToKeycode(dpy, key[i].keysym);
 363                 XGrabKey(dpy, code, key[i].mod, root, True,
 364                                 GrabModeAsync, GrabModeAsync);
 365                 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
 366                                 GrabModeAsync, GrabModeAsync);
 367                 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
 368                                 GrabModeAsync, GrabModeAsync);
 369                 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
 370                                 GrabModeAsync, GrabModeAsync);
 371         }
 372 }
 373
 374 void
 375 procevent(void) {
 376         XEvent ev;
 377
 378         while(XPending(dpy)) {
 379                 XNextEvent(dpy, &ev);
 380                 if(handler[ev.type])
 381                         (handler[ev.type])(&ev); /* call handler */
 382         }
 383 }