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 const char *term[] = {
  17         "urxvtc", "-tr", "+sb", "-bg", "black", "-fg", "white", "-cr", "white",
  18         "-fn", "-*-terminus-medium-*-*-*-13-*-*-*-*-*-iso10646-*", NULL
  19 };
  20 const char *browse[] = { "firefox", NULL };
  21 const char *xlock[] = { "xlock", NULL };
  22
  23 Key key[] = {
  24         /* modifier                             key                     function        arguments */
  25         { Mod1Mask,                             XK_Return,      zoom,           { 0 } },
  26         { Mod1Mask,                             XK_k,           focusprev,              { 0 } },
  27         { Mod1Mask,                             XK_j,           focusnext,              { 0 } },
  28         { Mod1Mask,                             XK_m,           maximize,               { 0 } },
  29         { Mod1Mask,                             XK_0,           view,           { .i = Tscratch } },
  30         { Mod1Mask,                             XK_1,           view,           { .i = Tdev } },
  31         { Mod1Mask,                             XK_2,           view,           { .i = Twww } },
  32         { Mod1Mask,                             XK_3,           view,           { .i = Twork } },
  33         { Mod1Mask,                             XK_space,       dotile,         { 0 } },
  34         { Mod1Mask|ShiftMask,   XK_space,       dofloat,        { 0 } },
  35         { Mod1Mask|ShiftMask,   XK_0,           replacetag,             { .i = Tscratch } },
  36         { Mod1Mask|ShiftMask,   XK_1,           replacetag,             { .i = Tdev } },
  37         { Mod1Mask|ShiftMask,   XK_2,           replacetag,             { .i = Twww } },
  38         { Mod1Mask|ShiftMask,   XK_3,           replacetag,             { .i = Twork } },
  39         { Mod1Mask|ShiftMask,   XK_c,           killclient,             { 0 } },
  40         { Mod1Mask|ShiftMask,   XK_q,           quit,           { 0 } },
  41         { Mod1Mask|ShiftMask,   XK_Return,      spawn,          { .argv = term } },
  42         { Mod1Mask|ShiftMask,   XK_w,           spawn,          { .argv = browse } },
  43         { Mod1Mask|ShiftMask,   XK_l,           spawn,          { .argv = xlock } },
  44         { ControlMask,                  XK_0,           appendtag,      { .i = Tscratch } },
  45         { ControlMask,                  XK_1,           appendtag,      { .i = Tdev } },
  46         { ControlMask,                  XK_2,           appendtag,      { .i = Twww } },
  47         { ControlMask,                  XK_3,           appendtag,      { .i = Twork } },
  48 };
  49
  50 /********** CUSTOMIZE **********/
  51
  52 /* static functions */
  53
  54 static void
  55 movemouse(Client *c)
  56 {
  57         XEvent ev;
  58         int x1, y1, ocx, ocy, di;
  59         unsigned int dui;
  60         Window dummy;
  61
  62         ocx = c->x;
  63         ocy = c->y;
  64         if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
  65                                 None, cursor[CurMove], CurrentTime) != GrabSuccess)
  66                 return;
  67         XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  68         for(;;) {
  69                 XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
  70                 switch (ev.type) {
  71                 default: break;
  72                 case Expose:
  73                         handler[Expose](&ev);
  74                         break;
  75                 case MotionNotify:
  76                         XSync(dpy, False);
  77                         c->x = ocx + (ev.xmotion.x - x1);
  78                         c->y = ocy + (ev.xmotion.y - y1);
  79                         resize(c, False);
  80                         break;
  81                 case ButtonRelease:
  82                         XUngrabPointer(dpy, CurrentTime);
  83                         return;
  84                 }
  85         }
  86 }
  87
  88 static void
  89 resizemouse(Client *c)
  90 {
  91         XEvent ev;
  92         int ocx, ocy;
  93
  94         ocx = c->x;
  95         ocy = c->y;
  96         if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
  97                                 None, cursor[CurResize], CurrentTime) != GrabSuccess)
  98                 return;
  99         XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
 100         for(;;) {
 101                 XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
 102                 switch(ev.type) {
 103                 default: break;
 104                 case Expose:
 105                         handler[Expose](&ev);
 106                         break;
 107                 case MotionNotify:
 108                         XSync(dpy, False);
 109                         c->w = abs(ocx - ev.xmotion.x);
 110                         c->h = abs(ocy - ev.xmotion.y);
 111                         c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
 112                         c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
 113                         resize(c, True);
 114                         break;
 115                 case ButtonRelease:
 116                         XUngrabPointer(dpy, CurrentTime);
 117                         return;
 118                 }
 119         }
 120 }
 121
 122 static void
 123 buttonpress(XEvent *e)
 124 {
 125         int x;
 126         Arg a;
 127         XButtonPressedEvent *ev = &e->xbutton;
 128         Client *c;
 129
 130         if(barwin == ev->window) {
 131                 switch(ev->button) {
 132                 default:
 133                         x = 0;
 134                         for(a.i = 0; a.i < TLast; a.i++) {
 135                                 x += textw(tags[a.i]);
 136                                 if(ev->x < x) {
 137                                         view(&a);
 138                                         break;
 139                                 }
 140                         }
 141                         break;
 142                 case Button4:
 143                         a.i = (tsel + 1 < TLast) ? tsel + 1 : 0;
 144                         view(&a);
 145                         break;
 146                 case Button5:
 147                         a.i = (tsel - 1 >= 0) ? tsel - 1 : TLast - 1;
 148                         view(&a);
 149                         break;
 150                 }
 151         }
 152         else if((c = getclient(ev->window))) {
 153                 if(arrange == dotile && !c->isfloat) {
 154                         if((ev->state & ControlMask) && (ev->button == Button1))
 155                                 zoom(NULL);
 156                         return;
 157                 }
 158                 /* floating windows */
 159                 higher(c);
 160                 switch(ev->button) {
 161                 default:
 162                         break;
 163                 case Button1:
 164                         movemouse(c);
 165                         break;
 166                 case Button2:
 167                         lower(c);
 168                         break;
 169                 case Button3:
 170                         resizemouse(c);
 171                         break;
 172                 }
 173         }
 174 }
 175
 176 static void
 177 configurerequest(XEvent *e)
 178 {
 179         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 180         XWindowChanges wc;
 181         Client *c;
 182
 183         ev->value_mask &= ~CWSibling;
 184         if((c = getclient(ev->window))) {
 185                 gravitate(c, True);
 186                 if(ev->value_mask & CWX)
 187                         c->x = ev->x;
 188                 if(ev->value_mask & CWY)
 189                         c->y = ev->y;
 190                 if(ev->value_mask & CWWidth)
 191                         c->w = ev->width;
 192                 if(ev->value_mask & CWHeight)
 193                         c->h = ev->height;
 194                 if(ev->value_mask & CWBorderWidth)
 195                         c->border = 1;
 196                 gravitate(c, False);
 197                 resize(c, True);
 198         }
 199
 200         wc.x = ev->x;
 201         wc.y = ev->y;
 202         wc.width = ev->width;
 203         wc.height = ev->height;
 204         wc.border_width = 1;
 205         wc.sibling = None;
 206         wc.stack_mode = Above;
 207         ev->value_mask &= ~CWStackMode;
 208         ev->value_mask |= CWBorderWidth;
 209         XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 210         XSync(dpy, False);
 211 }
 212
 213 static void
 214 destroynotify(XEvent *e)
 215 {
 216         Client *c;
 217         XDestroyWindowEvent *ev = &e->xdestroywindow;
 218
 219         if((c = getclient(ev->window)))
 220                 unmanage(c);
 221 }
 222
 223 static void
 224 enternotify(XEvent *e)
 225 {
 226         XCrossingEvent *ev = &e->xcrossing;
 227         Client *c;
 228
 229         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 230                 return;
 231
 232         if((c = getclient(ev->window)))
 233                 focus(c);
 234         else if(ev->window == root)
 235                 issel = True;
 236 }
 237
 238 static void
 239 expose(XEvent *e)
 240 {
 241         XExposeEvent *ev = &e->xexpose;
 242         Client *c;
 243
 244         if(ev->count == 0) {
 245                 if(barwin == ev->window)
 246                         drawstatus();
 247                 else if((c = getctitle(ev->window)))
 248                         drawtitle(c);
 249         }
 250 }
 251
 252 static void
 253 keypress(XEvent *e)
 254 {
 255         XKeyEvent *ev = &e->xkey;
 256         static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
 257         unsigned int i;
 258         KeySym keysym;
 259
 260         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 261         for(i = 0; i < len; i++)
 262                 if((keysym == key[i].keysym) && (key[i].mod == ev->state)) {
 263                         if(key[i].func)
 264                                 key[i].func(&key[i].arg);
 265                         return;
 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 = True;
 276 }
 277
 278 static void
 279 maprequest(XEvent *e)
 280 {
 281         XMapRequestEvent *ev = &e->xmaprequest;
 282         static XWindowAttributes wa;
 283
 284         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 285                 return;
 286
 287         if(wa.override_redirect) {
 288                 XSelectInput(dpy, ev->window,
 289                                 (StructureNotifyMask | PropertyChangeMask));
 290                 return;
 291         }
 292
 293         if(!getclient(ev->window))
 294                 manage(ev->window, &wa);
 295 }
 296
 297 static void
 298 propertynotify(XEvent *e)
 299 {
 300         XPropertyEvent *ev = &e->xproperty;
 301         Window trans;
 302         Client *c;
 303
 304         if(ev->state == PropertyDelete)
 305                 return; /* ignore */
 306
 307         if((c = getclient(ev->window))) {
 308                 if(ev->atom == wmatom[WMProtocols]) {
 309                         c->proto = getproto(c->win);
 310                         return;
 311                 }
 312                 switch (ev->atom) {
 313                         default: break;
 314                         case XA_WM_TRANSIENT_FOR:
 315                                 XGetTransientForHint(dpy, c->win, &trans);
 316                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 317                                         arrange(NULL);
 318                                 break;
 319                         case XA_WM_NORMAL_HINTS:
 320                                 setsize(c);
 321                                 break;
 322                 }
 323                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 324                         settitle(c);
 325                         drawtitle(c);
 326                 }
 327         }
 328 }
 329
 330 static void
 331 unmapnotify(XEvent *e)
 332 {
 333         Client *c;
 334         XUnmapEvent *ev = &e->xunmap;
 335
 336         if((c = getclient(ev->window)))
 337                 unmanage(c);
 338 }
 339
 340 /* extern functions */
 341
 342 void (*handler[LASTEvent]) (XEvent *) = {
 343         [ButtonPress] = buttonpress,
 344         [ConfigureRequest] = configurerequest,
 345         [DestroyNotify] = destroynotify,
 346         [EnterNotify] = enternotify,
 347         [LeaveNotify] = leavenotify,
 348         [Expose] = expose,
 349         [KeyPress] = keypress,
 350         [MapRequest] = maprequest,
 351         [PropertyNotify] = propertynotify,
 352         [UnmapNotify] = unmapnotify
 353 };
 354
 355 void
 356 grabkeys()
 357 {
 358         static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
 359         unsigned int i;
 360         KeyCode code;
 361
 362         for(i = 0; i < len; i++) {
 363                 code = XKeysymToKeycode(dpy, key[i].keysym);
 364                 XUngrabKey(dpy, code, key[i].mod, root);
 365                 XGrabKey(dpy, code, key[i].mod, root, True,
 366                                 GrabModeAsync, GrabModeAsync);
 367         }
 368 }