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", "-fn",
  18         "-*-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                         XFlush(dpy);
  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                         XFlush(dpy);
 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                 x = (arrange == dofloat) ? textw("~") : 0;
 132                 for(a.i = 0; a.i < TLast; a.i++) {
 133                         x += textw(tags[a.i]);
 134                         if(ev->x < x) {
 135                                 view(&a);
 136                                 break;
 137                         }
 138                 }
 139         }
 140         else if((c = getclient(ev->window))) {
 141                 if(arrange == dotile && !c->dofloat)
 142                         return;
 143                 higher(c);
 144                 switch(ev->button) {
 145                 default:
 146                         break;
 147                 case Button1:
 148                         movemouse(c);
 149                         break;
 150                 case Button2:
 151                         lower(c);
 152                         break;
 153                 case Button3:
 154                         resizemouse(c);
 155                         break;
 156                 }
 157         }
 158 }
 159
 160 static void
 161 configurerequest(XEvent *e)
 162 {
 163         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 164         XWindowChanges wc;
 165         Client *c;
 166
 167         ev->value_mask &= ~CWSibling;
 168         if((c = getclient(ev->window))) {
 169                 gravitate(c, True);
 170                 if(ev->value_mask & CWX)
 171                         c->x = ev->x;
 172                 if(ev->value_mask & CWY)
 173                         c->y = ev->y;
 174                 if(ev->value_mask & CWWidth)
 175                         c->w = ev->width;
 176                 if(ev->value_mask & CWHeight)
 177                         c->h = ev->height;
 178                 if(ev->value_mask & CWBorderWidth)
 179                         c->border = 1;
 180                 gravitate(c, False);
 181                 resize(c, True);
 182         }
 183
 184         wc.x = ev->x;
 185         wc.y = ev->y;
 186         wc.width = ev->width;
 187         wc.height = ev->height;
 188         wc.border_width = 1;
 189         wc.sibling = None;
 190         wc.stack_mode = Above;
 191         ev->value_mask &= ~CWStackMode;
 192         ev->value_mask |= CWBorderWidth;
 193         XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 194         XFlush(dpy);
 195 }
 196
 197 static void
 198 destroynotify(XEvent *e)
 199 {
 200         Client *c;
 201         XDestroyWindowEvent *ev = &e->xdestroywindow;
 202
 203         if((c = getclient(ev->window)))
 204                 unmanage(c);
 205 }
 206
 207 static void
 208 enternotify(XEvent *e)
 209 {
 210         XCrossingEvent *ev = &e->xcrossing;
 211         Client *c;
 212
 213         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 214                 return;
 215
 216         if((c = getclient(ev->window)))
 217                 focus(c);
 218         else if(ev->window == root)
 219                 issel = True;
 220 }
 221
 222 static void
 223 expose(XEvent *e)
 224 {
 225         XExposeEvent *ev = &e->xexpose;
 226         Client *c;
 227
 228         if(ev->count == 0) {
 229                 if(barwin == ev->window)
 230                         drawstatus();
 231                 else if((c = getctitle(ev->window)))
 232                         drawtitle(c);
 233         }
 234 }
 235
 236 static void
 237 keypress(XEvent *e)
 238 {
 239         XKeyEvent *ev = &e->xkey;
 240         static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
 241         unsigned int i;
 242         KeySym keysym;
 243
 244         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 245         for(i = 0; i < len; i++)
 246                 if((keysym == key[i].keysym) && (key[i].mod == ev->state)) {
 247                         if(key[i].func)
 248                                 key[i].func(&key[i].arg);
 249                         return;
 250                 }
 251 }
 252
 253 static void
 254 leavenotify(XEvent *e)
 255 {
 256         XCrossingEvent *ev = &e->xcrossing;
 257
 258         if((ev->window == root) && !ev->same_screen)
 259                 issel = True;
 260 }
 261
 262 static void
 263 maprequest(XEvent *e)
 264 {
 265         XMapRequestEvent *ev = &e->xmaprequest;
 266         static XWindowAttributes wa;
 267
 268         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 269                 return;
 270
 271         if(wa.override_redirect) {
 272                 XSelectInput(dpy, ev->window,
 273                                 (StructureNotifyMask | PropertyChangeMask));
 274                 return;
 275         }
 276
 277         if(!getclient(ev->window))
 278                 manage(ev->window, &wa);
 279 }
 280
 281 static void
 282 propertynotify(XEvent *e)
 283 {
 284         XPropertyEvent *ev = &e->xproperty;
 285         Window trans;
 286         Client *c;
 287
 288         if(ev->state == PropertyDelete)
 289                 return; /* ignore */
 290
 291         if((c = getclient(ev->window))) {
 292                 if(ev->atom == wmatom[WMProtocols]) {
 293                         c->proto = getproto(c->win);
 294                         return;
 295                 }
 296                 switch (ev->atom) {
 297                         default: break;
 298                         case XA_WM_TRANSIENT_FOR:
 299                                 XGetTransientForHint(dpy, c->win, &trans);
 300                                 if(!c->dofloat && (c->dofloat = (trans != 0)))
 301                                         arrange(NULL);
 302                                 break;
 303                         case XA_WM_NORMAL_HINTS:
 304                                 setsize(c);
 305                                 break;
 306                 }
 307                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 308                         settitle(c);
 309                         drawtitle(c);
 310                 }
 311         }
 312 }
 313
 314 static void
 315 unmapnotify(XEvent *e)
 316 {
 317         Client *c;
 318         XUnmapEvent *ev = &e->xunmap;
 319
 320         if((c = getclient(ev->window)))
 321                 unmanage(c);
 322 }
 323
 324 /* extern functions */
 325
 326 void (*handler[LASTEvent]) (XEvent *) = {
 327         [ButtonPress] = buttonpress,
 328         [ConfigureRequest] = configurerequest,
 329         [DestroyNotify] = destroynotify,
 330         [EnterNotify] = enternotify,
 331         [LeaveNotify] = leavenotify,
 332         [Expose] = expose,
 333         [KeyPress] = keypress,
 334         [MapRequest] = maprequest,
 335         [PropertyNotify] = propertynotify,
 336         [UnmapNotify] = unmapnotify
 337 };
 338
 339 void
 340 grabkeys()
 341 {
 342         static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
 343         unsigned int i;
 344         KeyCode code;
 345
 346         for(i = 0; i < len; i++) {
 347                 code = XKeysymToKeycode(dpy, key[i].keysym);
 348                 XUngrabKey(dpy, code, key[i].mod, root);
 349                 XGrabKey(dpy, code, key[i].mod, root, True,
 350                                 GrabModeAsync, GrabModeAsync);
 351         }
 352 }