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
   7 #include <stdlib.h>
   8 #include <X11/keysym.h>
   9 #include <X11/Xatom.h>
  10
  11 #define ButtonMask      (ButtonPressMask | ButtonReleaseMask)
  12 #define MouseMask       (ButtonMask | PointerMotionMask)
  13
  14 /* CUSTOMIZE */
  15
  16 typedef struct {
  17         unsigned long mod;
  18         KeySym keysym;
  19         void (*func)(Arg *arg);
  20         Arg arg;
  21 } Key;
  22
  23 /*
  24 const char *browse[] = { "firefox", NULL };
  25 const char *gimp[] = { "gimp", NULL };
  26 */
  27 const char *term[] = { "xterm", NULL };
  28 /*
  29         "urxvtc", "-tr", "+sb", "-bg", "black", "-fg", "white", "-cr", "white",
  30         "-fn", "-*-terminus-medium-*-*-*-13-*-*-*-*-*-iso10646-*", NULL
  31 };
  32 coonst char *xlock[] = { "xlock", NULL };
  33 */
  34
  35 static Key key[] = {
  36         /* modifier                             key                     function        arguments */
  37         { ControlMask,                  XK_0,           appendtag,      { .i = Tscratch } },
  38         { ControlMask,                  XK_1,           appendtag,      { .i = Tdev } },
  39         { ControlMask,                  XK_2,           appendtag,      { .i = Twww } },
  40         { ControlMask,                  XK_3,           appendtag,      { .i = Twork } },
  41         { MODKEY,                               XK_0,           view,           { .i = Tscratch } },
  42         { MODKEY,                               XK_1,           view,           { .i = Tdev } },
  43         { MODKEY,                               XK_2,           view,           { .i = Twww } },
  44         { MODKEY,                               XK_3,           view,           { .i = Twork } },
  45         { MODKEY,                               XK_j,           focusnext,              { 0 } },
  46         { MODKEY,                               XK_k,           focusprev,              { 0 } },
  47         { MODKEY,                               XK_m,           maximize,               { 0 } },
  48         { MODKEY,                               XK_space,       dotile,         { 0 } },
  49         { MODKEY,                               XK_Return,      zoom,           { 0 } },
  50         { ControlMask|ShiftMask,XK_0,           heretag,        { .i = Tscratch } },
  51         { ControlMask|ShiftMask,XK_1,           heretag,        { .i = Tdev } },
  52         { ControlMask|ShiftMask,XK_2,           heretag,        { .i = Twww } },
  53         { ControlMask|ShiftMask,XK_3,           heretag,        { .i = Twork } },
  54         { MODKEY|ShiftMask,             XK_0,           replacetag,             { .i = Tscratch } },
  55         { MODKEY|ShiftMask,             XK_1,           replacetag,             { .i = Tdev } },
  56         { MODKEY|ShiftMask,             XK_2,           replacetag,             { .i = Twww } },
  57         { MODKEY|ShiftMask,             XK_3,           replacetag,             { .i = Twork } },
  58         { MODKEY|ShiftMask,             XK_c,           killclient,             { 0 } },
  59         /*
  60         { MODKEY|ShiftMask,             XK_g,           spawn,          { .argv = gimp } },
  61         { MODKEY|ShiftMask,             XK_l,           spawn,          { .argv = xlock } },
  62         */
  63         { MODKEY|ShiftMask,             XK_q,           quit,           { 0 } },
  64         { MODKEY|ShiftMask,             XK_space,       dofloat,        { 0 } },
  65         /*{ MODKEY|ShiftMask,           XK_w,           spawn,          { .argv = browse } },*/
  66         { MODKEY|ShiftMask,             XK_Return,      spawn,          { .argv = term } },
  67 };
  68
  69 /* static */
  70
  71 static void
  72 movemouse(Client *c)
  73 {
  74         XEvent ev;
  75         int x1, y1, ocx, ocy, di;
  76         unsigned int dui;
  77         Window dummy;
  78
  79         ocx = c->x;
  80         ocy = c->y;
  81         if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
  82                                 None, cursor[CurMove], CurrentTime) != GrabSuccess)
  83                 return;
  84         XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  85         for(;;) {
  86                 XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
  87                 switch (ev.type) {
  88                 default: break;
  89                 case Expose:
  90                         handler[Expose](&ev);
  91                         break;
  92                 case MotionNotify:
  93                         XSync(dpy, False);
  94                         c->x = ocx + (ev.xmotion.x - x1);
  95                         c->y = ocy + (ev.xmotion.y - y1);
  96                         resize(c, False, TopLeft);
  97                         break;
  98                 case ButtonRelease:
  99                         XUngrabPointer(dpy, CurrentTime);
 100                         return;
 101                 }
 102         }
 103 }
 104
 105 static void
 106 resizemouse(Client *c)
 107 {
 108         XEvent ev;
 109         int ocx, ocy;
 110         Corner sticky;
 111
 112         ocx = c->x;
 113         ocy = c->y;
 114         if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
 115                                 None, cursor[CurResize], CurrentTime) != GrabSuccess)
 116                 return;
 117         XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
 118         for(;;) {
 119                 XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
 120                 switch(ev.type) {
 121                 default: break;
 122                 case Expose:
 123                         handler[Expose](&ev);
 124                         break;
 125                 case MotionNotify:
 126                         XSync(dpy, False);
 127                         c->w = abs(ocx - ev.xmotion.x);
 128                         c->h = abs(ocy - ev.xmotion.y);
 129                         c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
 130                         c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
 131                         if(ocx <= ev.xmotion.x)
 132                                 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
 133                         else
 134                                 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
 135                         resize(c, True, sticky);
 136                         break;
 137                 case ButtonRelease:
 138                         XUngrabPointer(dpy, CurrentTime);
 139                         return;
 140                 }
 141         }
 142 }
 143
 144 static void
 145 buttonpress(XEvent *e)
 146 {
 147         int x;
 148         Arg a;
 149         XButtonPressedEvent *ev = &e->xbutton;
 150         Client *c;
 151
 152         if(barwin == ev->window) {
 153                 switch(ev->button) {
 154                 default:
 155                         x = 0;
 156                         for(a.i = 0; a.i < TLast; a.i++) {
 157                                 x += textw(tags[a.i]);
 158                                 if(ev->x < x) {
 159                                         view(&a);
 160                                         break;
 161                                 }
 162                         }
 163                         break;
 164                 case Button4:
 165                         a.i = (tsel + 1 < TLast) ? tsel + 1 : 0;
 166                         view(&a);
 167                         break;
 168                 case Button5:
 169                         a.i = (tsel - 1 >= 0) ? tsel - 1 : TLast - 1;
 170                         view(&a);
 171                         break;
 172                 }
 173         }
 174         else if((c = getclient(ev->window))) {
 175                 switch(ev->button) {
 176                 default:
 177                         break;
 178                 case Button1:
 179                         if(arrange == dotile && !c->isfloat) {
 180                                 if((ev->state & ControlMask) && (ev->button == Button1))
 181                                         zoom(NULL);
 182                         }
 183                         else {
 184                                 higher(c);
 185                                 movemouse(c);
 186                         }
 187                         break;
 188                 case Button2:
 189                         lower(c);
 190                         break;
 191                 case Button3:
 192                         if(arrange == dofloat || c->isfloat) {
 193                                 higher(c);
 194                                 resizemouse(c);
 195                         }
 196                         break;
 197                 }
 198         }
 199 }
 200
 201 static void
 202 configurerequest(XEvent *e)
 203 {
 204         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 205         XWindowChanges wc;
 206         Client *c;
 207
 208         ev->value_mask &= ~CWSibling;
 209         if((c = getclient(ev->window))) {
 210                 gravitate(c, True);
 211                 if(ev->value_mask & CWX)
 212                         c->x = ev->x;
 213                 if(ev->value_mask & CWY)
 214                         c->y = ev->y;
 215                 if(ev->value_mask & CWWidth)
 216                         c->w = ev->width;
 217                 if(ev->value_mask & CWHeight)
 218                         c->h = ev->height;
 219                 if(ev->value_mask & CWBorderWidth)
 220                         c->border = 1;
 221                 gravitate(c, False);
 222                 resize(c, True, TopLeft);
 223         }
 224
 225         wc.x = ev->x;
 226         wc.y = ev->y;
 227         wc.width = ev->width;
 228         wc.height = ev->height;
 229         wc.border_width = 1;
 230         wc.sibling = None;
 231         wc.stack_mode = Above;
 232         ev->value_mask &= ~CWStackMode;
 233         ev->value_mask |= CWBorderWidth;
 234         XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 235         XSync(dpy, False);
 236 }
 237
 238 static void
 239 destroynotify(XEvent *e)
 240 {
 241         Client *c;
 242         XDestroyWindowEvent *ev = &e->xdestroywindow;
 243
 244         if((c = getclient(ev->window)))
 245                 unmanage(c);
 246 }
 247
 248 static void
 249 enternotify(XEvent *e)
 250 {
 251         XCrossingEvent *ev = &e->xcrossing;
 252         Client *c;
 253
 254         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 255                 return;
 256
 257         if((c = getclient(ev->window)))
 258                 focus(c);
 259         else if(ev->window == root)
 260                 issel = True;
 261 }
 262
 263 static void
 264 expose(XEvent *e)
 265 {
 266         XExposeEvent *ev = &e->xexpose;
 267         Client *c;
 268
 269         if(ev->count == 0) {
 270                 if(barwin == ev->window)
 271                         drawstatus();
 272                 else if((c = getctitle(ev->window)))
 273                         drawtitle(c);
 274         }
 275 }
 276
 277 static void
 278 keypress(XEvent *e)
 279 {
 280         XKeyEvent *ev = &e->xkey;
 281         static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
 282         unsigned int i;
 283         KeySym keysym;
 284
 285         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 286         for(i = 0; i < len; i++)
 287                 if((keysym == key[i].keysym) && (key[i].mod == ev->state)) {
 288                         if(key[i].func)
 289                                 key[i].func(&key[i].arg);
 290                         return;
 291                 }
 292 }
 293
 294 static void
 295 leavenotify(XEvent *e)
 296 {
 297         XCrossingEvent *ev = &e->xcrossing;
 298
 299         if((ev->window == root) && !ev->same_screen)
 300                 issel = True;
 301 }
 302
 303 static void
 304 maprequest(XEvent *e)
 305 {
 306         XMapRequestEvent *ev = &e->xmaprequest;
 307         static XWindowAttributes wa;
 308
 309         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 310                 return;
 311
 312         if(wa.override_redirect) {
 313                 XSelectInput(dpy, ev->window,
 314                                 (StructureNotifyMask | PropertyChangeMask));
 315                 return;
 316         }
 317
 318         if(!getclient(ev->window))
 319                 manage(ev->window, &wa);
 320 }
 321
 322 static void
 323 propertynotify(XEvent *e)
 324 {
 325         XPropertyEvent *ev = &e->xproperty;
 326         Window trans;
 327         Client *c;
 328
 329         if(ev->state == PropertyDelete)
 330                 return; /* ignore */
 331
 332         if((c = getclient(ev->window))) {
 333                 if(ev->atom == wmatom[WMProtocols]) {
 334                         c->proto = getproto(c->win);
 335                         return;
 336                 }
 337                 switch (ev->atom) {
 338                         default: break;
 339                         case XA_WM_TRANSIENT_FOR:
 340                                 XGetTransientForHint(dpy, c->win, &trans);
 341                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 342                                         arrange(NULL);
 343                                 break;
 344                         case XA_WM_NORMAL_HINTS:
 345                                 setsize(c);
 346                                 break;
 347                 }
 348                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 349                         settitle(c);
 350                         drawtitle(c);
 351                 }
 352         }
 353 }
 354
 355 static void
 356 unmapnotify(XEvent *e)
 357 {
 358         Client *c;
 359         XUnmapEvent *ev = &e->xunmap;
 360
 361         if((c = getclient(ev->window)))
 362                 unmanage(c);
 363 }
 364
 365 /* extern */
 366
 367 void (*handler[LASTEvent]) (XEvent *) = {
 368         [ButtonPress] = buttonpress,
 369         [ConfigureRequest] = configurerequest,
 370         [DestroyNotify] = destroynotify,
 371         [EnterNotify] = enternotify,
 372         [LeaveNotify] = leavenotify,
 373         [Expose] = expose,
 374         [KeyPress] = keypress,
 375         [MapRequest] = maprequest,
 376         [PropertyNotify] = propertynotify,
 377         [UnmapNotify] = unmapnotify
 378 };
 379
 380 void
 381 grabkeys()
 382 {
 383         static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
 384         unsigned int i;
 385         KeyCode code;
 386
 387         for(i = 0; i < len; i++) {
 388                 code = XKeysymToKeycode(dpy, key[i].keysym);
 389                 XUngrabKey(dpy, code, key[i].mod, root);
 390                 XGrabKey(dpy, code, key[i].mod, root, True,
 391                                 GrabModeAsync, GrabModeAsync);
 392         }
 393 }