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 *browse[] = { "firefox", NULL };
  16 const char *gimp[] = { "gimp", NULL };
  17 const char *term[] = {
  18         "urxvtc", "-tr", "+sb", "-bg", "black", "-fg", "white", "-cr", "white",
  19         "-fn", "-*-terminus-medium-*-*-*-13-*-*-*-*-*-iso10646-*", NULL
  20 };
  21 const char *xlock[] = { "xlock", NULL };
  22
  23 Key key[] = {
  24         /* modifier                             key                     function        arguments */
  25         { ControlMask,                  XK_0,           appendtag,      { .i = Tscratch } },
  26         { ControlMask,                  XK_1,           appendtag,      { .i = Tdev } },
  27         { ControlMask,                  XK_2,           appendtag,      { .i = Twww } },
  28         { ControlMask,                  XK_3,           appendtag,      { .i = Twork } },
  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_j,           focusnext,              { 0 } },
  34         { Mod1Mask,                             XK_k,           focusprev,              { 0 } },
  35         { Mod1Mask,                             XK_m,           maximize,               { 0 } },
  36         { Mod1Mask,                             XK_space,       dotile,         { 0 } },
  37         { Mod1Mask,                             XK_Return,      zoom,           { 0 } },
  38         { ControlMask|ShiftMask,XK_0,           heretag,        { .i = Tscratch } },
  39         { ControlMask|ShiftMask,XK_1,           heretag,        { .i = Tdev } },
  40         { ControlMask|ShiftMask,XK_2,           heretag,        { .i = Twww } },
  41         { ControlMask|ShiftMask,XK_3,           heretag,        { .i = Twork } },
  42         { Mod1Mask|ShiftMask,   XK_0,           replacetag,             { .i = Tscratch } },
  43         { Mod1Mask|ShiftMask,   XK_1,           replacetag,             { .i = Tdev } },
  44         { Mod1Mask|ShiftMask,   XK_2,           replacetag,             { .i = Twww } },
  45         { Mod1Mask|ShiftMask,   XK_3,           replacetag,             { .i = Twork } },
  46         { Mod1Mask|ShiftMask,   XK_c,           killclient,             { 0 } },
  47         { Mod1Mask|ShiftMask,   XK_g,           spawn,          { .argv = gimp } },
  48         { Mod1Mask|ShiftMask,   XK_l,           spawn,          { .argv = xlock } },
  49         { Mod1Mask|ShiftMask,   XK_q,           quit,           { 0 } },
  50         { Mod1Mask|ShiftMask,   XK_space,       dofloat,        { 0 } },
  51         { Mod1Mask|ShiftMask,   XK_w,           spawn,          { .argv = browse } },
  52         { Mod1Mask|ShiftMask,   XK_Return,      spawn,          { .argv = term } },
  53 };
  54
  55 /* static */
  56
  57 static void
  58 movemouse(Client *c)
  59 {
  60         XEvent ev;
  61         int x1, y1, ocx, ocy, di;
  62         unsigned int dui;
  63         Window dummy;
  64
  65         ocx = *c->x;
  66         ocy = *c->y;
  67         if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
  68                                 None, cursor[CurMove], CurrentTime) != GrabSuccess)
  69                 return;
  70         XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  71         for(;;) {
  72                 XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
  73                 switch (ev.type) {
  74                 default: break;
  75                 case Expose:
  76                         handler[Expose](&ev);
  77                         break;
  78                 case MotionNotify:
  79                         XSync(dpy, False);
  80                         *c->x = ocx + (ev.xmotion.x - x1);
  81                         *c->y = ocy + (ev.xmotion.y - y1);
  82                         resize(c, False);
  83                         break;
  84                 case ButtonRelease:
  85                         XUngrabPointer(dpy, CurrentTime);
  86                         return;
  87                 }
  88         }
  89 }
  90
  91 static void
  92 resizemouse(Client *c)
  93 {
  94         XEvent ev;
  95         int ocx, ocy;
  96
  97         ocx = *c->x;
  98         ocy = *c->y;
  99         if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
 100                                 None, cursor[CurResize], CurrentTime) != GrabSuccess)
 101                 return;
 102         XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, *c->w, *c->h);
 103         for(;;) {
 104                 XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
 105                 switch(ev.type) {
 106                 default: break;
 107                 case Expose:
 108                         handler[Expose](&ev);
 109                         break;
 110                 case MotionNotify:
 111                         XSync(dpy, False);
 112                         *c->w = abs(ocx - ev.xmotion.x);
 113                         *c->h = abs(ocy - ev.xmotion.y);
 114                         *c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - *c->w;
 115                         *c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - *c->h;
 116                         resize(c, True);
 117                         break;
 118                 case ButtonRelease:
 119                         XUngrabPointer(dpy, CurrentTime);
 120                         return;
 121                 }
 122         }
 123 }
 124
 125 static void
 126 buttonpress(XEvent *e)
 127 {
 128         int x;
 129         Arg a;
 130         XButtonPressedEvent *ev = &e->xbutton;
 131         Client *c;
 132
 133         if(barwin == ev->window) {
 134                 switch(ev->button) {
 135                 default:
 136                         x = 0;
 137                         for(a.i = 0; a.i < TLast; a.i++) {
 138                                 x += textw(tags[a.i]);
 139                                 if(ev->x < x) {
 140                                         view(&a);
 141                                         break;
 142                                 }
 143                         }
 144                         break;
 145                 case Button4:
 146                         a.i = (tsel + 1 < TLast) ? tsel + 1 : 0;
 147                         view(&a);
 148                         break;
 149                 case Button5:
 150                         a.i = (tsel - 1 >= 0) ? tsel - 1 : TLast - 1;
 151                         view(&a);
 152                         break;
 153                 }
 154         }
 155         else if((c = getclient(ev->window))) {
 156                 if(arrange == dotile && !c->isfloat) {
 157                         if((ev->state & ControlMask) && (ev->button == Button1))
 158                                 zoom(NULL);
 159                         return;
 160                 }
 161                 /* floating windows */
 162                 higher(c);
 163                 switch(ev->button) {
 164                 default:
 165                         break;
 166                 case Button1:
 167                         movemouse(c);
 168                         break;
 169                 case Button2:
 170                         lower(c);
 171                         break;
 172                 case Button3:
 173                         resizemouse(c);
 174                         break;
 175                 }
 176         }
 177 }
 178
 179 static void
 180 configurerequest(XEvent *e)
 181 {
 182         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 183         XWindowChanges wc;
 184         Client *c;
 185
 186         ev->value_mask &= ~CWSibling;
 187         if((c = getclient(ev->window))) {
 188                 gravitate(c, True);
 189                 if(ev->value_mask & CWX)
 190                         *c->x = ev->x;
 191                 if(ev->value_mask & CWY)
 192                         *c->y = ev->y;
 193                 if(ev->value_mask & CWWidth)
 194                         *c->w = ev->width;
 195                 if(ev->value_mask & CWHeight)
 196                         *c->h = ev->height;
 197                 if(ev->value_mask & CWBorderWidth)
 198                         c->border = 1;
 199                 gravitate(c, False);
 200                 resize(c, True);
 201         }
 202
 203         wc.x = ev->x;
 204         wc.y = ev->y;
 205         wc.width = ev->width;
 206         wc.height = ev->height;
 207         wc.border_width = 1;
 208         wc.sibling = None;
 209         wc.stack_mode = Above;
 210         ev->value_mask &= ~CWStackMode;
 211         ev->value_mask |= CWBorderWidth;
 212         XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 213         XSync(dpy, False);
 214 }
 215
 216 static void
 217 destroynotify(XEvent *e)
 218 {
 219         Client *c;
 220         XDestroyWindowEvent *ev = &e->xdestroywindow;
 221
 222         if((c = getclient(ev->window)))
 223                 unmanage(c);
 224 }
 225
 226 static void
 227 enternotify(XEvent *e)
 228 {
 229         XCrossingEvent *ev = &e->xcrossing;
 230         Client *c;
 231
 232         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 233                 return;
 234
 235         if((c = getclient(ev->window)))
 236                 focus(c);
 237         else if(ev->window == root)
 238                 issel = True;
 239 }
 240
 241 static void
 242 expose(XEvent *e)
 243 {
 244         XExposeEvent *ev = &e->xexpose;
 245         Client *c;
 246
 247         if(ev->count == 0) {
 248                 if(barwin == ev->window)
 249                         drawstatus();
 250                 else if((c = getctitle(ev->window)))
 251                         drawtitle(c);
 252         }
 253 }
 254
 255 static void
 256 keypress(XEvent *e)
 257 {
 258         XKeyEvent *ev = &e->xkey;
 259         static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
 260         unsigned int i;
 261         KeySym keysym;
 262
 263         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 264         for(i = 0; i < len; i++)
 265                 if((keysym == key[i].keysym) && (key[i].mod == ev->state)) {
 266                         if(key[i].func)
 267                                 key[i].func(&key[i].arg);
 268                         return;
 269                 }
 270 }
 271
 272 static void
 273 leavenotify(XEvent *e)
 274 {
 275         XCrossingEvent *ev = &e->xcrossing;
 276
 277         if((ev->window == root) && !ev->same_screen)
 278                 issel = True;
 279 }
 280
 281 static void
 282 maprequest(XEvent *e)
 283 {
 284         XMapRequestEvent *ev = &e->xmaprequest;
 285         static XWindowAttributes wa;
 286
 287         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 288                 return;
 289
 290         if(wa.override_redirect) {
 291                 XSelectInput(dpy, ev->window,
 292                                 (StructureNotifyMask | PropertyChangeMask));
 293                 return;
 294         }
 295
 296         if(!getclient(ev->window))
 297                 manage(ev->window, &wa);
 298 }
 299
 300 static void
 301 propertynotify(XEvent *e)
 302 {
 303         XPropertyEvent *ev = &e->xproperty;
 304         Window trans;
 305         Client *c;
 306
 307         if(ev->state == PropertyDelete)
 308                 return; /* ignore */
 309
 310         if((c = getclient(ev->window))) {
 311                 if(ev->atom == wmatom[WMProtocols]) {
 312                         c->proto = getproto(c->win);
 313                         return;
 314                 }
 315                 switch (ev->atom) {
 316                         default: break;
 317                         case XA_WM_TRANSIENT_FOR:
 318                                 XGetTransientForHint(dpy, c->win, &trans);
 319                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 320                                         arrange(NULL);
 321                                 break;
 322                         case XA_WM_NORMAL_HINTS:
 323                                 setsize(c);
 324                                 break;
 325                 }
 326                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 327                         settitle(c);
 328                         drawtitle(c);
 329                 }
 330         }
 331 }
 332
 333 static void
 334 unmapnotify(XEvent *e)
 335 {
 336         Client *c;
 337         XUnmapEvent *ev = &e->xunmap;
 338
 339         if((c = getclient(ev->window)))
 340                 unmanage(c);
 341 }
 342
 343 /* extern */
 344
 345 void (*handler[LASTEvent]) (XEvent *) = {
 346         [ButtonPress] = buttonpress,
 347         [ConfigureRequest] = configurerequest,
 348         [DestroyNotify] = destroynotify,
 349         [EnterNotify] = enternotify,
 350         [LeaveNotify] = leavenotify,
 351         [Expose] = expose,
 352         [KeyPress] = keypress,
 353         [MapRequest] = maprequest,
 354         [PropertyNotify] = propertynotify,
 355         [UnmapNotify] = unmapnotify
 356 };
 357
 358 void
 359 grabkeys()
 360 {
 361         static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
 362         unsigned int i;
 363         KeyCode code;
 364
 365         for(i = 0; i < len; i++) {
 366                 code = XKeysymToKeycode(dpy, key[i].keysym);
 367                 XUngrabKey(dpy, code, key[i].mod, root);
 368                 XGrabKey(dpy, code, key[i].mod, root, True,
 369                                 GrabModeAsync, GrabModeAsync);
 370         }
 371 }