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