event.c

   1 /*
   2  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
   3  * See LICENSE file for license details.
   4  */
   5 #include "dwm.h"
   6 #include <stdlib.h>
   7 #include <X11/keysym.h>
   8 #include <X11/Xatom.h>
   9
  10 /* static */
  11
  12 typedef struct {
  13         unsigned long mod;
  14         KeySym keysym;
  15         void (*func)(Arg *arg);
  16         Arg arg;
  17 } Key;
  18
  19 KEYS
  20
  21 #define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
  22
  23 static void
  24 movemouse(Client *c)
  25 {
  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         XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  37         for(;;) {
  38                 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
  39                 switch (ev.type) {
  40                 default: break;
  41                 case Expose:
  42                         handler[Expose](&ev);
  43                         break;
  44                 case MotionNotify:
  45                         XSync(dpy, False);
  46                         c->x = ocx + (ev.xmotion.x - x1);
  47                         c->y = ocy + (ev.xmotion.y - y1);
  48                         resize(c, False, TopLeft);
  49                         break;
  50                 case ButtonRelease:
  51                         XUngrabPointer(dpy, CurrentTime);
  52                         return;
  53                 }
  54         }
  55 }
  56
  57 static void
  58 resizemouse(Client *c)
  59 {
  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         XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
  71         for(;;) {
  72                 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
  73                 switch(ev.type) {
  74                 default: break;
  75                 case Expose:
  76                         handler[Expose](&ev);
  77                         break;
  78                 case MotionNotify:
  79                         XSync(dpy, False);
  80                         if((nw = abs(ocx - ev.xmotion.x)))
  81                                 c->w = abs(ocx - ev.xmotion.x);
  82                         if((nh = abs(ocy - ev.xmotion.y)))
  83                                 c->h = abs(ocy - ev.xmotion.y);
  84                         c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
  85                         c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
  86                         if(ocx <= ev.xmotion.x)
  87                                 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
  88                         else
  89                                 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
  90                         resize(c, True, sticky);
  91                         break;
  92                 case ButtonRelease:
  93                         XUngrabPointer(dpy, CurrentTime);
  94                         return;
  95                 }
  96         }
  97 }
  98
  99 static void
 100 buttonpress(XEvent *e)
 101 {
 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                                         view(&a);
 114                                 else if(ev->button == Button3)
 115                                         toggleview(&a);
 116                                 return;
 117                         }
 118                 }
 119         }
 120         else if((c = getclient(ev->window))) {
 121                 focus(c);
 122                 switch(ev->button) {
 123                 default:
 124                         break;
 125                 case Button1:
 126                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 127                                 restack(c);
 128                                 movemouse(c);
 129                         }
 130                         break;
 131                 case Button2:
 132                         zoom(NULL);
 133                         break;
 134                 case Button3:
 135                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 136                                 restack(c);
 137                                 resizemouse(c);
 138                         }
 139                         break;
 140                 }
 141         }
 142 }
 143
 144 static void
 145 configurerequest(XEvent *e)
 146 {
 147         unsigned long newmask;
 148         Client *c;
 149         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 150         XEvent synev;
 151         XWindowChanges wc;
 152
 153         if((c = getclient(ev->window))) {
 154                 gravitate(c, True);
 155                 if(ev->value_mask & CWX)
 156                         c->x = ev->x;
 157                 if(ev->value_mask & CWY)
 158                         c->y = ev->y;
 159                 if(ev->value_mask & CWWidth)
 160                         c->w = ev->width;
 161                 if(ev->value_mask & CWHeight)
 162                         c->h = ev->height;
 163                 if(ev->value_mask & CWBorderWidth)
 164                         c->border = ev->border_width;
 165                 gravitate(c, False);
 166                 wc.x = c->x;
 167                 wc.y = c->y;
 168                 wc.width = c->w;
 169                 wc.height = c->h;
 170                 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
 171                 if(newmask)
 172                         XConfigureWindow(dpy, c->win, newmask, &wc);
 173                 else {
 174                         synev.type = ConfigureNotify;
 175                         synev.xconfigure.display = dpy;
 176                         synev.xconfigure.event = c->win;
 177                         synev.xconfigure.window = c->win;
 178                         synev.xconfigure.x = c->x;
 179                         synev.xconfigure.y = c->y;
 180                         synev.xconfigure.width = c->w;
 181                         synev.xconfigure.height = c->h;
 182                         synev.xconfigure.border_width = c->border;
 183                         synev.xconfigure.above = None;
 184                         /* Send synthetic ConfigureNotify */
 185                         XSendEvent(dpy, c->win, True, NoEventMask, &synev);
 186                 }
 187                 XSync(dpy, False);
 188                 if(c->isfloat)
 189                         resize(c, False, TopLeft);
 190                 else
 191                         arrange(NULL);
 192         }
 193         else {
 194                 wc.x = ev->x;
 195                 wc.y = ev->y;
 196                 wc.width = ev->width;
 197                 wc.height = ev->height;
 198                 wc.border_width = ev->border_width;
 199                 wc.sibling = ev->above;
 200                 wc.stack_mode = ev->detail;
 201                 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 202                 XSync(dpy, False);
 203         }
 204 }
 205
 206 static void
 207 destroynotify(XEvent *e)
 208 {
 209         Client *c;
 210         XDestroyWindowEvent *ev = &e->xdestroywindow;
 211
 212         if((c = getclient(ev->window)))
 213                 unmanage(c);
 214 }
 215
 216 static void
 217 enternotify(XEvent *e)
 218 {
 219         Client *c;
 220         XCrossingEvent *ev = &e->xcrossing;
 221
 222         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 223                 return;
 224
 225         if((c = getclient(ev->window)) || (c = getctitle(ev->window)))
 226                 focus(c);
 227         else if(ev->window == root) {
 228                 issel = True;
 229                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 230                 drawall();
 231         }
 232 }
 233
 234 static void
 235 expose(XEvent *e)
 236 {
 237         Client *c;
 238         XExposeEvent *ev = &e->xexpose;
 239
 240         if(ev->count == 0) {
 241                 if(barwin == ev->window)
 242                         drawstatus();
 243                 else if((c = getctitle(ev->window)))
 244                         drawtitle(c);
 245         }
 246 }
 247
 248 static void
 249 keypress(XEvent *e)
 250 {
 251         static unsigned int len = sizeof(key) / sizeof(key[0]);
 252         unsigned int i;
 253         KeySym keysym;
 254         XKeyEvent *ev = &e->xkey;
 255
 256         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 257         for(i = 0; i < len; i++) {
 258                 if(keysym == key[i].keysym &&
 259                                 CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
 260                 {
 261                         if(key[i].func)
 262                                 key[i].func(&key[i].arg);
 263                         return;
 264                 }
 265         }
 266 }
 267
 268 static void
 269 leavenotify(XEvent *e)
 270 {
 271         XCrossingEvent *ev = &e->xcrossing;
 272
 273         if((ev->window == root) && !ev->same_screen) {
 274                 issel = False;
 275                 drawall();
 276         }
 277 }
 278
 279 static void
 280 mappingnotify(XEvent *e)
 281 {
 282         XMappingEvent *ev = &e->xmapping;
 283
 284         XRefreshKeyboardMapping(ev);
 285         if(ev->request == MappingKeyboard)
 286                 grabkeys();
 287 }
 288
 289 static void
 290 maprequest(XEvent *e)
 291 {
 292         static XWindowAttributes wa;
 293         XMapRequestEvent *ev = &e->xmaprequest;
 294
 295         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 296                 return;
 297
 298         if(wa.override_redirect) {
 299                 XSelectInput(dpy, ev->window,
 300                                 (StructureNotifyMask | PropertyChangeMask));
 301                 return;
 302         }
 303
 304         if(!getclient(ev->window))
 305                 manage(ev->window, &wa);
 306 }
 307
 308 static void
 309 propertynotify(XEvent *e)
 310 {
 311         Client *c;
 312         Window trans;
 313         XPropertyEvent *ev = &e->xproperty;
 314
 315         if(ev->state == PropertyDelete)
 316                 return; /* ignore */
 317
 318         if((c = getclient(ev->window))) {
 319                 if(ev->atom == wmatom[WMProtocols]) {
 320                         c->proto = getproto(c->win);
 321                         return;
 322                 }
 323                 switch (ev->atom) {
 324                         default: break;
 325                         case XA_WM_TRANSIENT_FOR:
 326                                 XGetTransientForHint(dpy, c->win, &trans);
 327                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 328                                         arrange(NULL);
 329                                 break;
 330                         case XA_WM_NORMAL_HINTS:
 331                                 setsize(c);
 332                                 break;
 333                 }
 334                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 335                         settitle(c);
 336                         drawtitle(c);
 337                 }
 338         }
 339 }
 340
 341 static void
 342 unmapnotify(XEvent *e)
 343 {
 344         Client *c;
 345         XUnmapEvent *ev = &e->xunmap;
 346
 347         if((c = getclient(ev->window)))
 348                 unmanage(c);
 349 }
 350
 351 /* extern */
 352
 353 void (*handler[LASTEvent]) (XEvent *) = {
 354         [ButtonPress] = buttonpress,
 355         [ConfigureRequest] = configurerequest,
 356         [DestroyNotify] = destroynotify,
 357         [EnterNotify] = enternotify,
 358         [LeaveNotify] = leavenotify,
 359         [Expose] = expose,
 360         [KeyPress] = keypress,
 361         [MappingNotify] = mappingnotify,
 362         [MapRequest] = maprequest,
 363         [PropertyNotify] = propertynotify,
 364         [UnmapNotify] = unmapnotify
 365 };
 366
 367 void
 368 grabkeys()
 369 {
 370         static unsigned int len = sizeof(key) / sizeof(key[0]);
 371         unsigned int i;
 372         KeyCode code;
 373
 374         XUngrabKey(dpy, AnyKey, AnyModifier, root);
 375         for(i = 0; i < len; i++) {
 376                 code = XKeysymToKeycode(dpy, key[i].keysym);
 377                 XGrabKey(dpy, code, key[i].mod, root, True,
 378                                 GrabModeAsync, GrabModeAsync);
 379                 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
 380                                 GrabModeAsync, GrabModeAsync);
 381                 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
 382                                 GrabModeAsync, GrabModeAsync);
 383                 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
 384                                 GrabModeAsync, GrabModeAsync);
 385         }
 386 }
 387
 388 void
 389 procevent()
 390 {
 391         XEvent ev;
 392
 393         while(XPending(dpy)) {
 394                 XNextEvent(dpy, &ev);
 395                 if(handler[ev.type])
 396                         (handler[ev.type])(&ev); /* call handler */
 397         }
 398 }
 399