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 <unistd.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 {
  27         int x1, y1, ocx, ocy, di;
  28         unsigned int dui;
  29         Window dummy;
  30         XEvent ev;
  31
  32         ocx = c->x;
  33         ocy = c->y;
  34         if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  35                         None, cursor[CurMove], CurrentTime) != GrabSuccess)
  36                 return;
  37         XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  38         for(;;) {
  39                 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
  40                 switch (ev.type) {
  41                 default: break;
  42                 case Expose:
  43                         handler[Expose](&ev);
  44                         break;
  45                 case MotionNotify:
  46                         XSync(dpy, False);
  47                         c->x = ocx + (ev.xmotion.x - x1);
  48                         c->y = ocy + (ev.xmotion.y - y1);
  49                         resize(c, False, TopLeft);
  50                         break;
  51                 case ButtonRelease:
  52                         XUngrabPointer(dpy, CurrentTime);
  53                         return;
  54                 }
  55         }
  56 }
  57
  58 static void
  59 resizemouse(Client *c)
  60 {
  61         int ocx, ocy;
  62         int nw, nh;
  63         Corner sticky;
  64         XEvent ev;
  65
  66         ocx = c->x;
  67         ocy = c->y;
  68         if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  69                                 None, cursor[CurResize], CurrentTime) != GrabSuccess)
  70                 return;
  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                 default: break;
  76                 case Expose:
  77                         handler[Expose](&ev);
  78                         break;
  79                 case MotionNotify:
  80                         XSync(dpy, False);
  81                         if((nw = abs(ocx - ev.xmotion.x)))
  82                                 c->w = abs(ocx - ev.xmotion.x);
  83                         if((nh = abs(ocy - ev.xmotion.y)))
  84                                 c->h = abs(ocy - ev.xmotion.y);
  85                         c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
  86                         c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
  87                         if(ocx <= ev.xmotion.x)
  88                                 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
  89                         else
  90                                 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
  91                         resize(c, True, sticky);
  92                         break;
  93                 case ButtonRelease:
  94                         XUngrabPointer(dpy, CurrentTime);
  95                         return;
  96                 }
  97         }
  98 }
  99
 100 static void
 101 buttonpress(XEvent *e)
 102 {
 103         int x;
 104         Arg a;
 105         Client *c;
 106         XButtonPressedEvent *ev = &e->xbutton;
 107
 108         if(barwin == ev->window) {
 109                 x = 0;
 110                 for(a.i = 0; a.i < ntags; a.i++) {
 111                         x += textw(tags[a.i]);
 112                         if(ev->x < x) {
 113                                 if(ev->button == Button3)
 114                                         toggleview(&a);
 115                                 else
 116                                         view(&a);
 117                                 return;
 118                         }
 119                 }
 120         }
 121         else if((c = getclient(ev->window))) {
 122                 focus(c);
 123                 switch(ev->button) {
 124                 default:
 125                         break;
 126                 case Button1:
 127                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 128                                 restack(c);
 129                                 movemouse(c);
 130                         }
 131                         break;
 132                 case Button2:
 133                         zoom(NULL);
 134                         break;
 135                 case Button3:
 136                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 137                                 restack(c);
 138                                 resizemouse(c);
 139                         }
 140                         break;
 141                 }
 142         }
 143 }
 144
 145 static void
 146 configurerequest(XEvent *e)
 147 {
 148         Client *c;
 149         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 150         XEvent synev;
 151         XWindowChanges wc;
 152         unsigned long newmask;
 153
 154         if((c = getclient(ev->window))) {
 155                 gravitate(c, True);
 156                 if(ev->value_mask & CWX)
 157                         c->x = ev->x;
 158                 if(ev->value_mask & CWY)
 159                         c->y = ev->y;
 160                 if(ev->value_mask & CWWidth)
 161                         c->w = ev->width;
 162                 if(ev->value_mask & CWHeight)
 163                         c->h = ev->height;
 164                 if(ev->value_mask & CWBorderWidth)
 165                         c->border = ev->border_width;
 166                 gravitate(c, False);
 167                 wc.x = c->x;
 168                 wc.y = c->y;
 169                 wc.width = c->w;
 170                 wc.height = c->h;
 171                 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
 172                 if(newmask)
 173                         XConfigureWindow(dpy, c->win, newmask, &wc);
 174                 else {
 175                         synev.type = ConfigureNotify;
 176                         synev.xconfigure.display = dpy;
 177                         synev.xconfigure.event = c->win;
 178                         synev.xconfigure.window = c->win;
 179                         synev.xconfigure.x = c->x;
 180                         synev.xconfigure.y = c->y;
 181                         synev.xconfigure.width = c->w;
 182                         synev.xconfigure.height = c->h;
 183                         synev.xconfigure.border_width = c->border;
 184                         synev.xconfigure.above = None;
 185                         /* Send synthetic ConfigureNotify */
 186                         XSendEvent(dpy, c->win, True, NoEventMask, &synev);
 187                 }
 188                 XSync(dpy, False);
 189                 if(c->isfloat)
 190                         resize(c, False, TopLeft);
 191                 else
 192                         arrange(NULL);
 193         }
 194         else {
 195                 wc.x = ev->x;
 196                 wc.y = ev->y;
 197                 wc.width = ev->width;
 198                 wc.height = ev->height;
 199                 wc.border_width = ev->border_width;
 200                 wc.sibling = ev->above;
 201                 wc.stack_mode = ev->detail;
 202                 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 203                 XSync(dpy, False);
 204         }
 205 }
 206
 207 static void
 208 destroynotify(XEvent *e)
 209 {
 210         Client *c;
 211         XDestroyWindowEvent *ev = &e->xdestroywindow;
 212
 213         if((c = getclient(ev->window)))
 214                 unmanage(c);
 215 }
 216
 217 static void
 218 enternotify(XEvent *e)
 219 {
 220         Client *c;
 221         XCrossingEvent *ev = &e->xcrossing;
 222
 223         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 224                 return;
 225
 226         if((c = getclient(ev->window)) || (c = getctitle(ev->window)))
 227                 focus(c);
 228         else if(ev->window == root) {
 229                 issel = True;
 230                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 231                 drawall();
 232         }
 233 }
 234
 235 static void
 236 expose(XEvent *e)
 237 {
 238         Client *c;
 239         XExposeEvent *ev = &e->xexpose;
 240
 241         if(ev->count == 0) {
 242                 if(barwin == ev->window)
 243                         drawstatus();
 244                 else if((c = getctitle(ev->window)))
 245                         drawtitle(c);
 246         }
 247 }
 248
 249 static void
 250 keypress(XEvent *e)
 251 {
 252         static unsigned int len = sizeof(key) / sizeof(key[0]);
 253         unsigned int i;
 254         KeySym keysym;
 255         XKeyEvent *ev = &e->xkey;
 256
 257         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 258         for(i = 0; i < len; i++) {
 259                 if(keysym == key[i].keysym &&
 260                                 CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
 261                 {
 262                         if(key[i].func)
 263                                 key[i].func(&key[i].arg);
 264                         return;
 265                 }
 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 = False;
 276                 drawall();
 277         }
 278 }
 279
 280 static void
 281 maprequest(XEvent *e)
 282 {
 283         static XWindowAttributes wa;
 284         XMapRequestEvent *ev = &e->xmaprequest;
 285
 286         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 287                 return;
 288
 289         if(wa.override_redirect) {
 290                 XSelectInput(dpy, ev->window,
 291                                 (StructureNotifyMask | PropertyChangeMask));
 292                 return;
 293         }
 294
 295         if(!getclient(ev->window))
 296                 manage(ev->window, &wa);
 297 }
 298
 299 static void
 300 propertynotify(XEvent *e)
 301 {
 302         Client *c;
 303         Window trans;
 304         XPropertyEvent *ev = &e->xproperty;
 305
 306         if(ev->state == PropertyDelete)
 307                 return; /* ignore */
 308
 309         if((c = getclient(ev->window))) {
 310                 if(ev->atom == wmatom[WMProtocols]) {
 311                         c->proto = getproto(c->win);
 312                         return;
 313                 }
 314                 switch (ev->atom) {
 315                         default: break;
 316                         case XA_WM_TRANSIENT_FOR:
 317                                 XGetTransientForHint(dpy, c->win, &trans);
 318                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 319                                         arrange(NULL);
 320                                 break;
 321                         case XA_WM_NORMAL_HINTS:
 322                                 setsize(c);
 323                                 break;
 324                 }
 325                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 326                         settitle(c);
 327                         drawtitle(c);
 328                 }
 329         }
 330 }
 331
 332 static void
 333 unmapnotify(XEvent *e)
 334 {
 335         Client *c;
 336         XUnmapEvent *ev = &e->xunmap;
 337
 338         if((c = getclient(ev->window)))
 339                 unmanage(c);
 340 }
 341
 342 /* extern */
 343
 344 void (*handler[LASTEvent]) (XEvent *) = {
 345         [ButtonPress] = buttonpress,
 346         [ConfigureRequest] = configurerequest,
 347         [DestroyNotify] = destroynotify,
 348         [EnterNotify] = enternotify,
 349         [LeaveNotify] = leavenotify,
 350         [Expose] = expose,
 351         [KeyPress] = keypress,
 352         [MapRequest] = maprequest,
 353         [PropertyNotify] = propertynotify,
 354         [UnmapNotify] = unmapnotify
 355 };
 356
 357 void
 358 grabkeys()
 359 {
 360         static unsigned int len = sizeof(key) / sizeof(key[0]);
 361         unsigned int i;
 362         KeyCode code;
 363
 364         while(XGrabKeyboard(dpy, root, True, GrabModeAsync,
 365                          GrabModeAsync, CurrentTime) != GrabSuccess)
 366                 usleep(1000);
 367         XUngrabKeyboard(dpy, CurrentTime);
 368
 369         for(i = 0; i < len; i++) {
 370                 code = XKeysymToKeycode(dpy, key[i].keysym);
 371                 XGrabKey(dpy, code, key[i].mod, root, True,
 372                                 GrabModeAsync, GrabModeAsync);
 373                 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
 374                                 GrabModeAsync, GrabModeAsync);
 375                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK, root, True,
 376                                 GrabModeAsync, GrabModeAsync);
 377                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK | LockMask, root, True,
 378                                 GrabModeAsync, GrabModeAsync);
 379         }
 380 }