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