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