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 clientmessage(XEvent *e)
 150 {
 151         Client *c;
 152         XClientMessageEvent *ev = &e->xclient;
 153
 154         if(ev->message_type == netatom[NetActiveWindow]) {
 155                 if((c = getclient(ev->window)) && c->tags[tsel])
 156                         focus(c);
 157         }
 158 }
 159
 160 static void
 161 configurerequest(XEvent *e)
 162 {
 163         Client *c;
 164         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 165         XEvent synev;
 166         XWindowChanges wc;
 167         unsigned long newmask;
 168
 169         if((c = getclient(ev->window))) {
 170                 gravitate(c, True);
 171                 if(ev->value_mask & CWX)
 172                         c->x = ev->x;
 173                 if(ev->value_mask & CWY)
 174                         c->y = ev->y;
 175                 if(ev->value_mask & CWWidth)
 176                         c->w = ev->width;
 177                 if(ev->value_mask & CWHeight)
 178                         c->h = ev->height;
 179                 if(ev->value_mask & CWBorderWidth)
 180                         c->border = ev->border_width;
 181                 gravitate(c, False);
 182                 wc.x = c->x;
 183                 wc.y = c->y;
 184                 wc.width = c->w;
 185                 wc.height = c->h;
 186                 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
 187                 if(newmask)
 188                         XConfigureWindow(dpy, c->win, newmask, &wc);
 189                 else {
 190                         synev.type = ConfigureNotify;
 191                         synev.xconfigure.display = dpy;
 192                         synev.xconfigure.event = c->win;
 193                         synev.xconfigure.window = c->win;
 194                         synev.xconfigure.x = c->x;
 195                         synev.xconfigure.y = c->y;
 196                         synev.xconfigure.width = c->w;
 197                         synev.xconfigure.height = c->h;
 198                         synev.xconfigure.border_width = c->border;
 199                         synev.xconfigure.above = None;
 200                         /* Send synthetic ConfigureNotify */
 201                         XSendEvent(dpy, c->win, True, NoEventMask, &synev);
 202                 }
 203                 XSync(dpy, False);
 204                 if(c->isfloat)
 205                         resize(c, False, TopLeft);
 206                 else
 207                         arrange(NULL);
 208         }
 209         else {
 210                 wc.x = ev->x;
 211                 wc.y = ev->y;
 212                 wc.width = ev->width;
 213                 wc.height = ev->height;
 214                 wc.border_width = ev->border_width;
 215                 wc.sibling = ev->above;
 216                 wc.stack_mode = ev->detail;
 217                 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 218                 XSync(dpy, False);
 219         }
 220 }
 221
 222 static void
 223 destroynotify(XEvent *e)
 224 {
 225         Client *c;
 226         XDestroyWindowEvent *ev = &e->xdestroywindow;
 227
 228         if((c = getclient(ev->window)))
 229                 unmanage(c);
 230 }
 231
 232 static void
 233 enternotify(XEvent *e)
 234 {
 235         Client *c;
 236         XCrossingEvent *ev = &e->xcrossing;
 237
 238         if(ev->detail == NotifyInferior)
 239                 return;
 240
 241         if((c = getclient(ev->window)) || (c = getctitle(ev->window)))
 242                 focus(c);
 243         else if(ev->window == root)
 244                 issel = True;
 245 }
 246
 247 static void
 248 expose(XEvent *e)
 249 {
 250         Client *c;
 251         XExposeEvent *ev = &e->xexpose;
 252
 253         if(ev->count == 0) {
 254                 if(barwin == ev->window)
 255                         drawstatus();
 256                 else if((c = getctitle(ev->window)))
 257                         drawtitle(c);
 258         }
 259 }
 260
 261 static void
 262 keypress(XEvent *e)
 263 {
 264         static unsigned int len = sizeof(key) / sizeof(key[0]);
 265         unsigned int i;
 266         KeySym keysym;
 267         XKeyEvent *ev = &e->xkey;
 268
 269         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 270         for(i = 0; i < len; i++)
 271                 if(keysym == key[i].keysym &&
 272                                 CLEANMASK(key[i].mod) == CLEANMASK(ev->state)) {
 273                         if(key[i].func)
 274                                 key[i].func(&key[i].arg);
 275                         return;
 276                 }
 277 }
 278
 279 static void
 280 leavenotify(XEvent *e)
 281 {
 282         XCrossingEvent *ev = &e->xcrossing;
 283
 284         if((ev->window == root) && !ev->same_screen)
 285                 issel = True;
 286 }
 287
 288 static void
 289 maprequest(XEvent *e)
 290 {
 291         static XWindowAttributes wa;
 292         XMapRequestEvent *ev = &e->xmaprequest;
 293
 294         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 295                 return;
 296
 297         if(wa.override_redirect) {
 298                 XSelectInput(dpy, ev->window,
 299                                 (StructureNotifyMask | PropertyChangeMask));
 300                 return;
 301         }
 302
 303         if(!getclient(ev->window))
 304                 manage(ev->window, &wa);
 305 }
 306
 307 static void
 308 propertynotify(XEvent *e)
 309 {
 310         Client *c;
 311         Window trans;
 312         XPropertyEvent *ev = &e->xproperty;
 313
 314         if(ev->state == PropertyDelete)
 315                 return; /* ignore */
 316
 317         if((c = getclient(ev->window))) {
 318                 if(ev->atom == wmatom[WMProtocols]) {
 319                         c->proto = getproto(c->win);
 320                         return;
 321                 }
 322                 switch (ev->atom) {
 323                         default: break;
 324                         case XA_WM_TRANSIENT_FOR:
 325                                 XGetTransientForHint(dpy, c->win, &trans);
 326                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 327                                         arrange(NULL);
 328                                 break;
 329                         case XA_WM_NORMAL_HINTS:
 330                                 setsize(c);
 331                                 break;
 332                 }
 333                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 334                         settitle(c);
 335                         drawtitle(c);
 336                 }
 337         }
 338 }
 339
 340 static void
 341 unmapnotify(XEvent *e)
 342 {
 343         Client *c;
 344         XUnmapEvent *ev = &e->xunmap;
 345
 346         if((c = getclient(ev->window)))
 347                 unmanage(c);
 348 }
 349
 350 /* extern */
 351
 352 void (*handler[LASTEvent]) (XEvent *) = {
 353         [ButtonPress] = buttonpress,
 354         [ClientMessage] = clientmessage,
 355         [ConfigureRequest] = configurerequest,
 356         [DestroyNotify] = destroynotify,
 357         [EnterNotify] = enternotify,
 358         [LeaveNotify] = leavenotify,
 359         [Expose] = expose,
 360         [KeyPress] = keypress,
 361         [MapRequest] = maprequest,
 362         [PropertyNotify] = propertynotify,
 363         [UnmapNotify] = unmapnotify
 364 };
 365
 366 void
 367 grabkeys()
 368 {
 369         static unsigned int len = sizeof(key) / sizeof(key[0]);
 370         unsigned int i;
 371         KeyCode code;
 372
 373         for(i = 0; i < len; i++) {
 374                 code = XKeysymToKeycode(dpy, key[i].keysym);
 375                 XGrabKey(dpy, code, key[i].mod, root, True,
 376                                 GrabModeAsync, GrabModeAsync);
 377                 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
 378                                 GrabModeAsync, GrabModeAsync);
 379                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK, root, True,
 380                                 GrabModeAsync, GrabModeAsync);
 381                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK | LockMask, root, True,
 382                                 GrabModeAsync, GrabModeAsync);
 383         }
 384 }