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