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) {
 131                                 if(arrange == dofloat || c->isfloat) {
 132                                         higher(c);
 133                                         movemouse(c);
 134                                 }
 135                                 else
 136                                         zoom(NULL);
 137                         }
 138                         break;
 139                 case Button3:
 140                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 141                                 higher(c);
 142                                 resizemouse(c);
 143                         }
 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 }
 235
 236 static void
 237 expose(XEvent *e)
 238 {
 239         Client *c;
 240         XExposeEvent *ev = &e->xexpose;
 241
 242         if(ev->count == 0) {
 243                 if(barwin == ev->window)
 244                         drawstatus();
 245                 else if((c = getctitle(ev->window)))
 246                         drawtitle(c);
 247         }
 248 }
 249
 250 static void
 251 keypress(XEvent *e)
 252 {
 253         static unsigned int len = sizeof(key) / sizeof(key[0]);
 254         unsigned int i;
 255         KeySym keysym;
 256         XKeyEvent *ev = &e->xkey;
 257
 258         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 259         for(i = 0; i < len; i++)
 260                 if(keysym == key[i].keysym &&
 261                                 CLEANMASK(key[i].mod) == CLEANMASK(ev->state)) {
 262                         if(key[i].func)
 263                                 key[i].func(&key[i].arg);
 264                         return;
 265                 }
 266 }
 267
 268 static void
 269 leavenotify(XEvent *e)
 270 {
 271         XCrossingEvent *ev = &e->xcrossing;
 272
 273         if((ev->window == root) && !ev->same_screen)
 274                 issel = True;
 275 }
 276
 277 static void
 278 maprequest(XEvent *e)
 279 {
 280         static XWindowAttributes wa;
 281         XMapRequestEvent *ev = &e->xmaprequest;
 282
 283         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 284                 return;
 285
 286         if(wa.override_redirect) {
 287                 XSelectInput(dpy, ev->window,
 288                                 (StructureNotifyMask | PropertyChangeMask));
 289                 return;
 290         }
 291
 292         if(!getclient(ev->window))
 293                 manage(ev->window, &wa);
 294 }
 295
 296 static void
 297 propertynotify(XEvent *e)
 298 {
 299         Client *c;
 300         Window trans;
 301         XPropertyEvent *ev = &e->xproperty;
 302
 303         if(ev->state == PropertyDelete)
 304                 return; /* ignore */
 305
 306         if((c = getclient(ev->window))) {
 307                 if(ev->atom == wmatom[WMProtocols]) {
 308                         c->proto = getproto(c->win);
 309                         return;
 310                 }
 311                 switch (ev->atom) {
 312                         default: break;
 313                         case XA_WM_TRANSIENT_FOR:
 314                                 XGetTransientForHint(dpy, c->win, &trans);
 315                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 316                                         arrange(NULL);
 317                                 break;
 318                         case XA_WM_NORMAL_HINTS:
 319                                 setsize(c);
 320                                 break;
 321                 }
 322                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 323                         settitle(c);
 324                         drawtitle(c);
 325                 }
 326         }
 327 }
 328
 329 static void
 330 unmapnotify(XEvent *e)
 331 {
 332         Client *c;
 333         XUnmapEvent *ev = &e->xunmap;
 334
 335         if((c = getclient(ev->window)))
 336                 unmanage(c);
 337 }
 338
 339 /* extern */
 340
 341 void (*handler[LASTEvent]) (XEvent *) = {
 342         [ButtonPress] = buttonpress,
 343         [ConfigureRequest] = configurerequest,
 344         [DestroyNotify] = destroynotify,
 345         [EnterNotify] = enternotify,
 346         [LeaveNotify] = leavenotify,
 347         [Expose] = expose,
 348         [KeyPress] = keypress,
 349         [MapRequest] = maprequest,
 350         [PropertyNotify] = propertynotify,
 351         [UnmapNotify] = unmapnotify
 352 };
 353
 354 void
 355 grabkeys()
 356 {
 357         static unsigned int len = sizeof(key) / sizeof(key[0]);
 358         unsigned int i;
 359         KeyCode code;
 360
 361         for(i = 0; i < len; i++) {
 362                 code = XKeysymToKeycode(dpy, key[i].keysym);
 363                 XGrabKey(dpy, code, key[i].mod, root, True,
 364                                 GrabModeAsync, GrabModeAsync);
 365                 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
 366                                 GrabModeAsync, GrabModeAsync);
 367                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK, root, True,
 368                                 GrabModeAsync, GrabModeAsync);
 369                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK | LockMask, root, True,
 370                                 GrabModeAsync, GrabModeAsync);
 371         }
 372 }