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 const char *term[] = { "xterm", NULL };
  16
  17 Key key[] = {
  18         /* modifier                             key                     function        arguments */
  19         { ControlMask,                  XK_0,           appendtag,      { .i = Tscratch } },
  20         { ControlMask,                  XK_1,           appendtag,      { .i = Tdev } },
  21         { ControlMask,                  XK_2,           appendtag,      { .i = Twww } },
  22         { ControlMask,                  XK_3,           appendtag,      { .i = Twork } },
  23         { Mod1Mask,                             XK_0,           view,           { .i = Tscratch } },
  24         { Mod1Mask,                             XK_1,           view,           { .i = Tdev } },
  25         { Mod1Mask,                             XK_2,           view,           { .i = Twww } },
  26         { Mod1Mask,                             XK_3,           view,           { .i = Twork } },
  27         { Mod1Mask,                             XK_j,           focusnext,              { 0 } },
  28         { Mod1Mask,                             XK_k,           focusprev,              { 0 } },
  29         { Mod1Mask,                             XK_m,           maximize,               { 0 } },
  30         { Mod1Mask,                             XK_space,       dotile,         { 0 } },
  31         { Mod1Mask,                             XK_Return,      zoom,           { 0 } },
  32         { ControlMask|ShiftMask,XK_0,           heretag,        { .i = Tscratch } },
  33         { ControlMask|ShiftMask,XK_1,           heretag,        { .i = Tdev } },
  34         { ControlMask|ShiftMask,XK_2,           heretag,        { .i = Twww } },
  35         { ControlMask|ShiftMask,XK_3,           heretag,        { .i = Twork } },
  36         { Mod1Mask|ShiftMask,   XK_0,           replacetag,             { .i = Tscratch } },
  37         { Mod1Mask|ShiftMask,   XK_1,           replacetag,             { .i = Tdev } },
  38         { Mod1Mask|ShiftMask,   XK_2,           replacetag,             { .i = Twww } },
  39         { Mod1Mask|ShiftMask,   XK_3,           replacetag,             { .i = Twork } },
  40         { Mod1Mask|ShiftMask,   XK_c,           killclient,             { 0 } },
  41         { Mod1Mask|ShiftMask,   XK_q,           quit,           { 0 } },
  42         { Mod1Mask|ShiftMask,   XK_space,       dofloat,        { 0 } },
  43         { Mod1Mask|ShiftMask,   XK_Return,      spawn,          { .argv = term } },
  44 };
  45
  46 /* static */
  47
  48 static void
  49 movemouse(Client *c)
  50 {
  51         XEvent ev;
  52         int x1, y1, ocx, ocy, di;
  53         unsigned int dui;
  54         Window dummy;
  55
  56         ocx = *c->x;
  57         ocy = *c->y;
  58         if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
  59                                 None, cursor[CurMove], CurrentTime) != GrabSuccess)
  60                 return;
  61         XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  62         for(;;) {
  63                 XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
  64                 switch (ev.type) {
  65                 default: break;
  66                 case Expose:
  67                         handler[Expose](&ev);
  68                         break;
  69                 case MotionNotify:
  70                         XSync(dpy, False);
  71                         *c->x = ocx + (ev.xmotion.x - x1);
  72                         *c->y = ocy + (ev.xmotion.y - y1);
  73                         resize(c, False, TopLeft);
  74                         break;
  75                 case ButtonRelease:
  76                         XUngrabPointer(dpy, CurrentTime);
  77                         return;
  78                 }
  79         }
  80 }
  81
  82 static void
  83 resizemouse(Client *c)
  84 {
  85         XEvent ev;
  86         int ocx, ocy;
  87         Corner sticky;
  88
  89         ocx = *c->x;
  90         ocy = *c->y;
  91         if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
  92                                 None, cursor[CurResize], CurrentTime) != GrabSuccess)
  93                 return;
  94         XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, *c->w, *c->h);
  95         for(;;) {
  96                 XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
  97                 switch(ev.type) {
  98                 default: break;
  99                 case Expose:
 100                         handler[Expose](&ev);
 101                         break;
 102                 case MotionNotify:
 103                         XSync(dpy, False);
 104                         *c->w = abs(ocx - ev.xmotion.x);
 105                         *c->h = abs(ocy - ev.xmotion.y);
 106                         *c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - *c->w;
 107                         *c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - *c->h;
 108                         if(ocx <= ev.xmotion.x)
 109                                 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
 110                         else
 111                                 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
 112                         resize(c, True, sticky);
 113                         break;
 114                 case ButtonRelease:
 115                         XUngrabPointer(dpy, CurrentTime);
 116                         return;
 117                 }
 118         }
 119 }
 120
 121 static void
 122 buttonpress(XEvent *e)
 123 {
 124         int x;
 125         Arg a;
 126         XButtonPressedEvent *ev = &e->xbutton;
 127         Client *c;
 128
 129         if(barwin == ev->window) {
 130                 switch(ev->button) {
 131                 default:
 132                         x = 0;
 133                         for(a.i = 0; a.i < TLast; a.i++) {
 134                                 x += textw(tags[a.i]);
 135                                 if(ev->x < x) {
 136                                         view(&a);
 137                                         break;
 138                                 }
 139                         }
 140                         break;
 141                 case Button4:
 142                         a.i = (tsel + 1 < TLast) ? tsel + 1 : 0;
 143                         view(&a);
 144                         break;
 145                 case Button5:
 146                         a.i = (tsel - 1 >= 0) ? tsel - 1 : TLast - 1;
 147                         view(&a);
 148                         break;
 149                 }
 150         }
 151         else if((c = getclient(ev->window))) {
 152                 switch(ev->button) {
 153                 default:
 154                         break;
 155                 case Button1:
 156                         if(arrange == dotile && !c->isfloat) {
 157                                 if((ev->state & ControlMask) && (ev->button == Button1))
 158                                         zoom(NULL);
 159                         }
 160                         else {
 161                                 higher(c);
 162                                 movemouse(c);
 163                         }
 164                         break;
 165                 case Button2:
 166                         lower(c);
 167                         break;
 168                 case Button3:
 169                         if(arrange == dofloat || c->isfloat) {
 170                                 higher(c);
 171                                 resizemouse(c);
 172                         }
 173                         break;
 174                 }
 175         }
 176 }
 177
 178 static void
 179 configurerequest(XEvent *e)
 180 {
 181         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 182         XWindowChanges wc;
 183         Client *c;
 184
 185         ev->value_mask &= ~CWSibling;
 186         if((c = getclient(ev->window))) {
 187                 gravitate(c, True);
 188                 if(ev->value_mask & CWX)
 189                         *c->x = ev->x;
 190                 if(ev->value_mask & CWY)
 191                         *c->y = ev->y;
 192                 if(ev->value_mask & CWWidth)
 193                         *c->w = ev->width;
 194                 if(ev->value_mask & CWHeight)
 195                         *c->h = ev->height;
 196                 if(ev->value_mask & CWBorderWidth)
 197                         c->border = 1;
 198                 gravitate(c, False);
 199                 resize(c, True, TopLeft);
 200         }
 201
 202         wc.x = ev->x;
 203         wc.y = ev->y;
 204         wc.width = ev->width;
 205         wc.height = ev->height;
 206         wc.border_width = 1;
 207         wc.sibling = None;
 208         wc.stack_mode = Above;
 209         ev->value_mask &= ~CWStackMode;
 210         ev->value_mask |= CWBorderWidth;
 211         XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 212         XSync(dpy, False);
 213 }
 214
 215 static void
 216 destroynotify(XEvent *e)
 217 {
 218         Client *c;
 219         XDestroyWindowEvent *ev = &e->xdestroywindow;
 220
 221         if((c = getclient(ev->window)))
 222                 unmanage(c);
 223 }
 224
 225 static void
 226 enternotify(XEvent *e)
 227 {
 228         XCrossingEvent *ev = &e->xcrossing;
 229         Client *c;
 230
 231         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 232                 return;
 233
 234         if((c = getclient(ev->window)))
 235                 focus(c);
 236         else if(ev->window == root)
 237                 issel = True;
 238 }
 239
 240 static void
 241 expose(XEvent *e)
 242 {
 243         XExposeEvent *ev = &e->xexpose;
 244         Client *c;
 245
 246         if(ev->count == 0) {
 247                 if(barwin == ev->window)
 248                         drawstatus();
 249                 else if((c = getctitle(ev->window)))
 250                         drawtitle(c);
 251         }
 252 }
 253
 254 static void
 255 keypress(XEvent *e)
 256 {
 257         XKeyEvent *ev = &e->xkey;
 258         static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
 259         unsigned int i;
 260         KeySym keysym;
 261
 262         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 263         for(i = 0; i < len; i++)
 264                 if((keysym == key[i].keysym) && (key[i].mod == ev->state)) {
 265                         if(key[i].func)
 266                                 key[i].func(&key[i].arg);
 267                         return;
 268                 }
 269 }
 270
 271 static void
 272 leavenotify(XEvent *e)
 273 {
 274         XCrossingEvent *ev = &e->xcrossing;
 275
 276         if((ev->window == root) && !ev->same_screen)
 277                 issel = True;
 278 }
 279
 280 static void
 281 maprequest(XEvent *e)
 282 {
 283         XMapRequestEvent *ev = &e->xmaprequest;
 284         static XWindowAttributes wa;
 285
 286         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 287                 return;
 288
 289         if(wa.override_redirect) {
 290                 XSelectInput(dpy, ev->window,
 291                                 (StructureNotifyMask | PropertyChangeMask));
 292                 return;
 293         }
 294
 295         if(!getclient(ev->window))
 296                 manage(ev->window, &wa);
 297 }
 298
 299 static void
 300 propertynotify(XEvent *e)
 301 {
 302         XPropertyEvent *ev = &e->xproperty;
 303         Window trans;
 304         Client *c;
 305
 306         if(ev->state == PropertyDelete)
 307                 return; /* ignore */
 308
 309         if((c = getclient(ev->window))) {
 310                 if(ev->atom == wmatom[WMProtocols]) {
 311                         c->proto = getproto(c->win);
 312                         return;
 313                 }
 314                 switch (ev->atom) {
 315                         default: break;
 316                         case XA_WM_TRANSIENT_FOR:
 317                                 XGetTransientForHint(dpy, c->win, &trans);
 318                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 319                                         arrange(NULL);
 320                                 break;
 321                         case XA_WM_NORMAL_HINTS:
 322                                 setsize(c);
 323                                 break;
 324                 }
 325                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 326                         settitle(c);
 327                         drawtitle(c);
 328                 }
 329         }
 330 }
 331
 332 static void
 333 unmapnotify(XEvent *e)
 334 {
 335         Client *c;
 336         XUnmapEvent *ev = &e->xunmap;
 337
 338         if((c = getclient(ev->window)))
 339                 unmanage(c);
 340 }
 341
 342 /* extern */
 343
 344 void (*handler[LASTEvent]) (XEvent *) = {
 345         [ButtonPress] = buttonpress,
 346         [ConfigureRequest] = configurerequest,
 347         [DestroyNotify] = destroynotify,
 348         [EnterNotify] = enternotify,
 349         [LeaveNotify] = leavenotify,
 350         [Expose] = expose,
 351         [KeyPress] = keypress,
 352         [MapRequest] = maprequest,
 353         [PropertyNotify] = propertynotify,
 354         [UnmapNotify] = unmapnotify
 355 };
 356
 357 void
 358 grabkeys()
 359 {
 360         static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
 361         unsigned int i;
 362         KeyCode code;
 363
 364         for(i = 0; i < len; i++) {
 365                 code = XKeysymToKeycode(dpy, key[i].keysym);
 366                 XUngrabKey(dpy, code, key[i].mod, root);
 367                 XGrabKey(dpy, code, key[i].mod, root, True,
 368                                 GrabModeAsync, GrabModeAsync);
 369         }
 370 }