event.c

   1 /*
   2  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
   3  * See LICENSE file for license details.
   4  */
   5
   6 #include <fcntl.h>
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <string.h>
  10 #include <unistd.h>
  11 #include <X11/keysym.h>
  12 #include <X11/Xatom.h>
  13
  14 #include "dwm.h"
  15
  16 #define ButtonMask      (ButtonPressMask | ButtonReleaseMask)
  17 #define MouseMask       (ButtonMask | PointerMotionMask)
  18
  19 /********** CUSTOMIZE **********/
  20
  21 const char *term[] = {
  22         "urxvtc", "-tr", "+sb", "-bg", "black", "-fg", "white", "-fn",
  23         "-*-terminus-medium-*-*-*-13-*-*-*-*-*-iso10646-*",NULL
  24 };
  25 const char *browse[] = { "firefox", NULL };
  26 const char *xlock[] = { "xlock", NULL };
  27
  28 Key key[] = {
  29         /* modifier                             key                     function        arguments */
  30         { Mod1Mask,                             XK_Return,      zoom,           { 0 } },
  31         { Mod1Mask,                             XK_k,           focusprev,              { 0 } },
  32         { Mod1Mask,                             XK_j,           focusnext,              { 0 } },
  33         { Mod1Mask,                             XK_m,           maximize,               { 0 } },
  34         { Mod1Mask,                             XK_0,           view,           { .i = Tscratch } },
  35         { Mod1Mask,                             XK_1,           view,           { .i = Tdev } },
  36         { Mod1Mask,                             XK_2,           view,           { .i = Twww } },
  37         { Mod1Mask,                             XK_3,           view,           { .i = Twork } },
  38         { Mod1Mask,                             XK_space,       dotile,         { 0 } },
  39         { Mod1Mask|ShiftMask,   XK_space,       dofloat,        { 0 } },
  40         { Mod1Mask|ShiftMask,   XK_0,           replacetag,             { .i = Tscratch } },
  41         { Mod1Mask|ShiftMask,   XK_1,           replacetag,             { .i = Tdev } },
  42         { Mod1Mask|ShiftMask,   XK_2,           replacetag,             { .i = Twww } },
  43         { Mod1Mask|ShiftMask,   XK_3,           replacetag,             { .i = Twork } },
  44         { Mod1Mask|ShiftMask,   XK_c,           killclient,             { 0 } },
  45         { Mod1Mask|ShiftMask,   XK_q,           quit,           { 0 } },
  46         { Mod1Mask|ShiftMask,   XK_Return,      spawn,          { .argv = term } },
  47         { Mod1Mask|ShiftMask,   XK_w,           spawn,          { .argv = browse } },
  48         { Mod1Mask|ShiftMask,   XK_l,           spawn,          { .argv = xlock } },
  49         { ControlMask,                  XK_0,           appendtag,      { .i = Tscratch } },
  50         { ControlMask,                  XK_1,           appendtag,      { .i = Tdev } },
  51         { ControlMask,                  XK_2,           appendtag,      { .i = Twww } },
  52         { ControlMask,                  XK_3,           appendtag,      { .i = Twork } },
  53 };
  54
  55 /********** CUSTOMIZE **********/
  56
  57 /* local functions */
  58 static void buttonpress(XEvent *e);
  59 static void configurerequest(XEvent *e);
  60 static void destroynotify(XEvent *e);
  61 static void enternotify(XEvent *e);
  62 static void leavenotify(XEvent *e);
  63 static void expose(XEvent *e);
  64 static void keypress(XEvent *e);
  65 static void maprequest(XEvent *e);
  66 static void propertynotify(XEvent *e);
  67 static void unmapnotify(XEvent *e);
  68
  69 void (*handler[LASTEvent]) (XEvent *) = {
  70         [ButtonPress] = buttonpress,
  71         [ConfigureRequest] = configurerequest,
  72         [DestroyNotify] = destroynotify,
  73         [EnterNotify] = enternotify,
  74         [LeaveNotify] = leavenotify,
  75         [Expose] = expose,
  76         [KeyPress] = keypress,
  77         [MapRequest] = maprequest,
  78         [PropertyNotify] = propertynotify,
  79         [UnmapNotify] = unmapnotify
  80 };
  81
  82 void
  83 grabkeys()
  84 {
  85         static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
  86         unsigned int i;
  87         KeyCode code;
  88
  89         for(i = 0; i < len; i++) {
  90                 code = XKeysymToKeycode(dpy, key[i].keysym);
  91                 XUngrabKey(dpy, code, key[i].mod, root);
  92                 XGrabKey(dpy, code, key[i].mod, root, True,
  93                                 GrabModeAsync, GrabModeAsync);
  94         }
  95 }
  96
  97 static void
  98 keypress(XEvent *e)
  99 {
 100         XKeyEvent *ev = &e->xkey;
 101         static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
 102         unsigned int i;
 103         KeySym keysym;
 104
 105         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 106         for(i = 0; i < len; i++)
 107                 if((keysym == key[i].keysym) && (key[i].mod == ev->state)) {
 108                         if(key[i].func)
 109                                 key[i].func(&key[i].arg);
 110                         return;
 111                 }
 112 }
 113
 114 static void
 115 resizemouse(Client *c)
 116 {
 117         XEvent ev;
 118         int ocx, ocy;
 119
 120         ocx = c->x;
 121         ocy = c->y;
 122         if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
 123                                 None, cursor[CurResize], CurrentTime) != GrabSuccess)
 124                 return;
 125         XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
 126         for(;;) {
 127                 XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
 128                 switch(ev.type) {
 129                 default: break;
 130                 case Expose:
 131                         handler[Expose](&ev);
 132                         break;
 133                 case MotionNotify:
 134                         XFlush(dpy);
 135                         c->w = abs(ocx - ev.xmotion.x);
 136                         c->h = abs(ocy - ev.xmotion.y);
 137                         c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
 138                         c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
 139                         resize(c, True);
 140                         break;
 141                 case ButtonRelease:
 142                         XUngrabPointer(dpy, CurrentTime);
 143                         return;
 144                 }
 145         }
 146 }
 147
 148 static void
 149 movemouse(Client *c)
 150 {
 151         XEvent ev;
 152         int x1, y1, ocx, ocy, di;
 153         unsigned int dui;
 154         Window dummy;
 155
 156         ocx = c->x;
 157         ocy = c->y;
 158         if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
 159                                 None, cursor[CurMove], CurrentTime) != GrabSuccess)
 160                 return;
 161         XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
 162         for(;;) {
 163                 XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
 164                 switch (ev.type) {
 165                 default: break;
 166                 case Expose:
 167                         handler[Expose](&ev);
 168                         break;
 169                 case MotionNotify:
 170                         XFlush(dpy);
 171                         c->x = ocx + (ev.xmotion.x - x1);
 172                         c->y = ocy + (ev.xmotion.y - y1);
 173                         resize(c, False);
 174                         break;
 175                 case ButtonRelease:
 176                         XUngrabPointer(dpy, CurrentTime);
 177                         return;
 178                 }
 179         }
 180 }
 181
 182 static void
 183 buttonpress(XEvent *e)
 184 {
 185         int x;
 186         Arg a;
 187         XButtonPressedEvent *ev = &e->xbutton;
 188         Client *c;
 189
 190         if(barwin == ev->window) {
 191                 x = (arrange == dofloat) ? textw("~") : 0;
 192                 for(a.i = 0; a.i < TLast; a.i++) {
 193                         x += textw(tags[a.i]);
 194                         if(ev->x < x) {
 195                                 view(&a);
 196                                 break;
 197                         }
 198                 }
 199         }
 200         else if((c = getclient(ev->window))) {
 201                 if(arrange == dotile && !c->dofloat)
 202                         return;
 203                 higher(c);
 204                 switch(ev->button) {
 205                 default:
 206                         break;
 207                 case Button1:
 208                         movemouse(c);
 209                         break;
 210                 case Button2:
 211                         lower(c);
 212                         break;
 213                 case Button3:
 214                         resizemouse(c);
 215                         break;
 216                 }
 217         }
 218 }
 219
 220 static void
 221 configurerequest(XEvent *e)
 222 {
 223         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 224         XWindowChanges wc;
 225         Client *c;
 226
 227         ev->value_mask &= ~CWSibling;
 228         if((c = getclient(ev->window))) {
 229                 gravitate(c, True);
 230                 if(ev->value_mask & CWX)
 231                         c->x = ev->x;
 232                 if(ev->value_mask & CWY)
 233                         c->y = ev->y;
 234                 if(ev->value_mask & CWWidth)
 235                         c->w = ev->width;
 236                 if(ev->value_mask & CWHeight)
 237                         c->h = ev->height;
 238                 if(ev->value_mask & CWBorderWidth)
 239                         c->border = 1;
 240                 gravitate(c, False);
 241                 resize(c, True);
 242         }
 243
 244         wc.x = ev->x;
 245         wc.y = ev->y;
 246         wc.width = ev->width;
 247         wc.height = ev->height;
 248         wc.border_width = 1;
 249         wc.sibling = None;
 250         wc.stack_mode = Above;
 251         ev->value_mask &= ~CWStackMode;
 252         ev->value_mask |= CWBorderWidth;
 253         XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 254         XFlush(dpy);
 255 }
 256
 257 static void
 258 destroynotify(XEvent *e)
 259 {
 260         Client *c;
 261         XDestroyWindowEvent *ev = &e->xdestroywindow;
 262
 263         if((c = getclient(ev->window)))
 264                 unmanage(c);
 265 }
 266
 267 static void
 268 enternotify(XEvent *e)
 269 {
 270         XCrossingEvent *ev = &e->xcrossing;
 271         Client *c;
 272
 273         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 274                 return;
 275
 276         if((c = getclient(ev->window)))
 277                 focus(c);
 278         else if(ev->window == root)
 279                 issel = True;
 280 }
 281
 282 static void
 283 leavenotify(XEvent *e)
 284 {
 285         XCrossingEvent *ev = &e->xcrossing;
 286
 287         if((ev->window == root) && !ev->same_screen)
 288                 issel = True;
 289 }
 290
 291 static void
 292 expose(XEvent *e)
 293 {
 294         XExposeEvent *ev = &e->xexpose;
 295         Client *c;
 296
 297         if(ev->count == 0) {
 298                 if(barwin == ev->window)
 299                         drawstatus();
 300                 else if((c = getctitle(ev->window)))
 301                         drawtitle(c);
 302         }
 303 }
 304
 305 static void
 306 maprequest(XEvent *e)
 307 {
 308         XMapRequestEvent *ev = &e->xmaprequest;
 309         static XWindowAttributes wa;
 310
 311         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 312                 return;
 313
 314         if(wa.override_redirect) {
 315                 XSelectInput(dpy, ev->window,
 316                                 (StructureNotifyMask | PropertyChangeMask));
 317                 return;
 318         }
 319
 320         if(!getclient(ev->window))
 321                 manage(ev->window, &wa);
 322 }
 323
 324 static void
 325 propertynotify(XEvent *e)
 326 {
 327         XPropertyEvent *ev = &e->xproperty;
 328         Window trans;
 329         Client *c;
 330
 331         if(ev->state == PropertyDelete)
 332                 return; /* ignore */
 333
 334         if((c = getclient(ev->window))) {
 335                 if(ev->atom == wm_atom[WMProtocols]) {
 336                         c->proto = getproto(c->win);
 337                         return;
 338                 }
 339                 switch (ev->atom) {
 340                         default: break;
 341                         case XA_WM_TRANSIENT_FOR:
 342                                 XGetTransientForHint(dpy, c->win, &trans);
 343                                 if(!c->dofloat && (c->dofloat = (trans != 0)))
 344                                         arrange(NULL);
 345                                 break;
 346                         case XA_WM_NORMAL_HINTS:
 347                                 setsize(c);
 348                                 break;
 349                 }
 350                 if(ev->atom == XA_WM_NAME || ev->atom == net_atom[NetWMName]) {
 351                         settitle(c);
 352                         drawtitle(c);
 353                 }
 354         }
 355 }
 356
 357 static void
 358 unmapnotify(XEvent *e)
 359 {
 360         Client *c;
 361         XUnmapEvent *ev = &e->xunmap;
 362
 363         if((c = getclient(ev->window)))
 364                 unmanage(c);
 365 }