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         Corner sticky;
  62         XEvent ev;
  63
  64         ocx = c->x;
  65         ocy = c->y;
  66         if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  67                                 None, cursor[CurResize], CurrentTime) != GrabSuccess)
  68                 return;
  69         XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
  70         for(;;) {
  71                 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
  72                 switch(ev.type) {
  73                 default: break;
  74                 case Expose:
  75                         handler[Expose](&ev);
  76                         break;
  77                 case MotionNotify:
  78                         XSync(dpy, False);
  79                         c->w = abs(ocx - ev.xmotion.x);
  80                         c->h = abs(ocy - ev.xmotion.y);
  81                         c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
  82                         c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
  83                         if(ocx <= ev.xmotion.x)
  84                                 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
  85                         else
  86                                 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
  87                         resize(c, True, sticky);
  88                         break;
  89                 case ButtonRelease:
  90                         XUngrabPointer(dpy, CurrentTime);
  91                         return;
  92                 }
  93         }
  94 }
  95
  96 static void
  97 buttonpress(XEvent *e)
  98 {
  99         int x;
 100         Arg a;
 101         Client *c;
 102         XButtonPressedEvent *ev = &e->xbutton;
 103
 104         if(barwin == ev->window) {
 105                 switch(ev->button) {
 106                 default:
 107                         x = 0;
 108                         for(a.i = 0; a.i < ntags; a.i++) {
 109                                 x += textw(tags[a.i]);
 110                                 if(ev->x < x) {
 111                                         view(&a);
 112                                         break;
 113                                 }
 114                         }
 115                         break;
 116                 case Button4:
 117                         viewnext(&a);
 118                         break;
 119                 case Button5:
 120                         viewprev(&a);
 121                         break;
 122                 }
 123         }
 124         else if((c = getclient(ev->window))) {
 125                 focus(c);
 126                 switch(ev->button) {
 127                 default:
 128                         break;
 129                 case Button1:
 130                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 131                                 higher(c);
 132                                 movemouse(c);
 133                         }
 134                         break;
 135                 case Button2:
 136                         lower(c);
 137                         break;
 138                 case Button3:
 139                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 140                                 higher(c);
 141                                 resizemouse(c);
 142                         }
 143                         break;
 144                 }
 145         }
 146 }
 147
 148 static void
 149 configurerequest(XEvent *e)
 150 {
 151         Client *c;
 152         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 153         XEvent synev;
 154         XWindowChanges wc;
 155         unsigned long newmask;
 156
 157         if((c = getclient(ev->window))) {
 158                 gravitate(c, True);
 159                 if(ev->value_mask & CWX)
 160                         c->x = ev->x;
 161                 if(ev->value_mask & CWY)
 162                         c->y = ev->y;
 163                 if(ev->value_mask & CWWidth)
 164                         c->w = ev->width;
 165                 if(ev->value_mask & CWHeight)
 166                         c->h = ev->height;
 167                 if(ev->value_mask & CWBorderWidth)
 168                         c->border = ev->border_width;
 169                 gravitate(c, False);
 170                 wc.x = c->x;
 171                 wc.y = c->y;
 172                 wc.width = c->w;
 173                 wc.height = c->h;
 174                 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
 175                 if(newmask)
 176                         XConfigureWindow(dpy, c->win, newmask, &wc);
 177                 else {
 178                         synev.type = ConfigureNotify;
 179                         synev.xconfigure.display = dpy;
 180                         synev.xconfigure.event = c->win;
 181                         synev.xconfigure.window = c->win;
 182                         synev.xconfigure.x = c->x;
 183                         synev.xconfigure.y = c->y;
 184                         synev.xconfigure.width = c->w;
 185                         synev.xconfigure.height = c->h;
 186                         synev.xconfigure.border_width = c->border;
 187                         synev.xconfigure.above = None;
 188                         /* Send synthetic ConfigureNotify */
 189                         XSendEvent(dpy, c->win, True, NoEventMask, &synev);
 190                 }
 191                 XSync(dpy, False);
 192                 arrange(NULL);
 193                 drawall();
 194         }
 195         else {
 196                 wc.x = ev->x;
 197                 wc.y = ev->y;
 198                 wc.width = ev->width;
 199                 wc.height = ev->height;
 200                 wc.border_width = ev->border_width;
 201                 wc.sibling = ev->above;
 202                 wc.stack_mode = ev->detail;
 203                 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 204                 XSync(dpy, False);
 205         }
 206 }
 207
 208 static void
 209 destroynotify(XEvent *e)
 210 {
 211         Client *c;
 212         XDestroyWindowEvent *ev = &e->xdestroywindow;
 213
 214         if((c = getclient(ev->window)))
 215                 unmanage(c);
 216 }
 217
 218 static void
 219 enternotify(XEvent *e)
 220 {
 221         Client *c;
 222         XCrossingEvent *ev = &e->xcrossing;
 223
 224         if(ev->detail == NotifyInferior)
 225                 return;
 226
 227         if((c = getclient(ev->window)) || (c = getctitle(ev->window)))
 228                 focus(c);
 229         else if(ev->window == root)
 230                 issel = True;
 231 }
 232
 233 static void
 234 expose(XEvent *e)
 235 {
 236         Client *c;
 237         XExposeEvent *ev = &e->xexpose;
 238
 239         if(ev->count == 0) {
 240                 if(barwin == ev->window)
 241                         drawstatus();
 242                 else if((c = getctitle(ev->window)))
 243                         drawtitle(c);
 244         }
 245 }
 246
 247 static void
 248 keypress(XEvent *e)
 249 {
 250         static unsigned int len = sizeof(key) / sizeof(key[0]);
 251         unsigned int i;
 252         KeySym keysym;
 253         XKeyEvent *ev = &e->xkey;
 254
 255         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 256         for(i = 0; i < len; i++)
 257                 if(keysym == key[i].keysym &&
 258                                 CLEANMASK(key[i].mod) == CLEANMASK(ev->state)) {
 259                         if(key[i].func)
 260                                 key[i].func(&key[i].arg);
 261                         return;
 262                 }
 263 }
 264
 265 static void
 266 leavenotify(XEvent *e)
 267 {
 268         XCrossingEvent *ev = &e->xcrossing;
 269
 270         if((ev->window == root) && !ev->same_screen)
 271                 issel = True;
 272 }
 273
 274 static void
 275 maprequest(XEvent *e)
 276 {
 277         static XWindowAttributes wa;
 278         XMapRequestEvent *ev = &e->xmaprequest;
 279
 280         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 281                 return;
 282
 283         if(wa.override_redirect) {
 284                 XSelectInput(dpy, ev->window,
 285                                 (StructureNotifyMask | PropertyChangeMask));
 286                 return;
 287         }
 288
 289         if(!getclient(ev->window))
 290                 manage(ev->window, &wa);
 291 }
 292
 293 static void
 294 propertynotify(XEvent *e)
 295 {
 296         Client *c;
 297         Window trans;
 298         XPropertyEvent *ev = &e->xproperty;
 299
 300         if(ev->state == PropertyDelete)
 301                 return; /* ignore */
 302
 303         if((c = getclient(ev->window))) {
 304                 if(ev->atom == wmatom[WMProtocols]) {
 305                         c->proto = getproto(c->win);
 306                         return;
 307                 }
 308                 switch (ev->atom) {
 309                         default: break;
 310                         case XA_WM_TRANSIENT_FOR:
 311                                 XGetTransientForHint(dpy, c->win, &trans);
 312                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 313                                         arrange(NULL);
 314                                 break;
 315                         case XA_WM_NORMAL_HINTS:
 316                                 setsize(c);
 317                                 break;
 318                 }
 319                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 320                         settitle(c);
 321                         drawtitle(c);
 322                 }
 323         }
 324 }
 325
 326 static void
 327 unmapnotify(XEvent *e)
 328 {
 329         Client *c;
 330         XUnmapEvent *ev = &e->xunmap;
 331
 332         if((c = getclient(ev->window)))
 333                 unmanage(c);
 334 }
 335
 336 /* extern */
 337
 338 void (*handler[LASTEvent]) (XEvent *) = {
 339         [ButtonPress] = buttonpress,
 340         [ConfigureRequest] = configurerequest,
 341         [DestroyNotify] = destroynotify,
 342         [EnterNotify] = enternotify,
 343         [LeaveNotify] = leavenotify,
 344         [Expose] = expose,
 345         [KeyPress] = keypress,
 346         [MapRequest] = maprequest,
 347         [PropertyNotify] = propertynotify,
 348         [UnmapNotify] = unmapnotify
 349 };
 350
 351 void
 352 grabkeys()
 353 {
 354         static unsigned int len = sizeof(key) / sizeof(key[0]);
 355         unsigned int i;
 356         KeyCode code;
 357
 358         for(i = 0; i < len; i++) {
 359                 code = XKeysymToKeycode(dpy, key[i].keysym);
 360                 /* normal */
 361                 XUngrabKey(dpy, code, key[i].mod, root);
 362                 XGrabKey(dpy, code, key[i].mod, root, True,
 363                                 GrabModeAsync, GrabModeAsync);
 364                 /* capslock */
 365                 XUngrabKey(dpy, code, key[i].mod | LockMask, root);
 366                 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
 367                                 GrabModeAsync, GrabModeAsync);
 368                 /* numlock */
 369                 XUngrabKey(dpy, code, key[i].mod | NUMLOCKMASK, root);
 370                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK, root, True,
 371                                 GrabModeAsync, GrabModeAsync);
 372                 /* capslock & numlock */
 373                 XUngrabKey(dpy, code, key[i].mod | NUMLOCKMASK | LockMask, root);
 374                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK | LockMask, root, True,
 375                                 GrabModeAsync, GrabModeAsync);
 376         }
 377 }