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