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 /* static */
  12
  13 typedef struct {
  14         unsigned long mod;
  15         KeySym keysym;
  16         void (*func)(Arg *arg);
  17         Arg arg;
  18 } Key;
  19
  20 KEYS
  21
  22 static unsigned int valid_mask =  255 &  ~(NUMLOCKMASK | LockMask);
  23
  24 static void
  25 movemouse(Client *c)
  26 {
  27         int x1, y1, ocx, ocy, di;
  28         unsigned int dui;
  29         Window dummy;
  30         XEvent ev;
  31
  32         ocx = c->x;
  33         ocy = c->y;
  34         if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  35                         None, cursor[CurMove], CurrentTime) != GrabSuccess)
  36                 return;
  37         XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  38         for(;;) {
  39                 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
  40                 switch (ev.type) {
  41                 default: break;
  42                 case Expose:
  43                         handler[Expose](&ev);
  44                         break;
  45                 case MotionNotify:
  46                         XSync(dpy, False);
  47                         c->x = ocx + (ev.xmotion.x - x1);
  48                         c->y = ocy + (ev.xmotion.y - y1);
  49                         resize(c, False, TopLeft);
  50                         break;
  51                 case ButtonRelease:
  52                         XUngrabPointer(dpy, CurrentTime);
  53                         return;
  54                 }
  55         }
  56 }
  57
  58 static void
  59 resizemouse(Client *c)
  60 {
  61         int ocx, ocy;
  62         Corner sticky;
  63         XEvent ev;
  64
  65         ocx = c->x;
  66         ocy = c->y;
  67         if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  68                                 None, cursor[CurResize], CurrentTime) != GrabSuccess)
  69                 return;
  70         XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
  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->w = abs(ocx - ev.xmotion.x);
  81                         c->h = abs(ocy - ev.xmotion.y);
  82                         c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
  83                         c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
  84                         if(ocx <= ev.xmotion.x)
  85                                 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
  86                         else
  87                                 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
  88                         resize(c, True, sticky);
  89                         break;
  90                 case ButtonRelease:
  91                         XUngrabPointer(dpy, CurrentTime);
  92                         return;
  93                 }
  94         }
  95 }
  96
  97 static void
  98 buttonpress(XEvent *e)
  99 {
 100         int x;
 101         Arg a;
 102         Client *c;
 103         XButtonPressedEvent *ev = &e->xbutton;
 104
 105         if(barwin == ev->window) {
 106                 switch(ev->button) {
 107                 default:
 108                         x = 0;
 109                         for(a.i = 0; a.i < TLast; a.i++) {
 110                                 x += textw(tags[a.i]);
 111                                 if(ev->x < x) {
 112                                         view(&a);
 113                                         break;
 114                                 }
 115                         }
 116                         break;
 117                 case Button4:
 118                         viewnext(&a);
 119                         break;
 120                 case Button5:
 121                         viewprev(&a);
 122                         break;
 123                 }
 124         }
 125         else if((c = getclient(ev->window))) {
 126                 focus(c);
 127                 switch(ev->button) {
 128                 default:
 129                         break;
 130                 case Button1:
 131                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 132                                 higher(c);
 133                                 movemouse(c);
 134                         }
 135                         break;
 136                 case Button2:
 137                         lower(c);
 138                         break;
 139                 case Button3:
 140                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 141                                 higher(c);
 142                                 resizemouse(c);
 143                         }
 144                         break;
 145                 }
 146         }
 147 }
 148
 149 static void
 150 configurerequest(XEvent *e)
 151 {
 152         Client *c;
 153         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 154         XWindowChanges wc;
 155
 156         if((c = getclient(ev->window))) {
 157                 gravitate(c, True);
 158                 if(ev->value_mask & CWX)
 159                         c->x = ev->x;
 160                 if(ev->value_mask & CWY)
 161                         c->y = ev->y;
 162                 if(ev->value_mask & CWWidth)
 163                         c->w = ev->width;
 164                 if(ev->value_mask & CWHeight)
 165                         c->h = ev->height;
 166                 if(ev->value_mask & CWBorderWidth)
 167                         c->border = 1;
 168                 gravitate(c, False);
 169                 resize(c, True, TopLeft);
 170         }
 171         else {
 172                 wc.x = ev->x;
 173                 wc.y = ev->y;
 174                 wc.width = ev->width;
 175                 wc.height = ev->height;
 176                 wc.border_width = 1;
 177                 XConfigureWindow(dpy, ev->window,
 178                                 CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
 179                 XSync(dpy, False);
 180         }
 181 }
 182
 183 static void
 184 destroynotify(XEvent *e)
 185 {
 186         Client *c;
 187         XDestroyWindowEvent *ev = &e->xdestroywindow;
 188
 189         if((c = getclient(ev->window)))
 190                 unmanage(c);
 191 }
 192
 193 static void
 194 enternotify(XEvent *e)
 195 {
 196         Client *c;
 197         XCrossingEvent *ev = &e->xcrossing;
 198
 199         if(ev->detail == NotifyInferior)
 200                 return;
 201
 202         if((c = getclient(ev->window)))
 203                 focus(c);
 204         else if(ev->window == root)
 205                 issel = True;
 206 }
 207
 208 static void
 209 expose(XEvent *e)
 210 {
 211         Client *c;
 212         XExposeEvent *ev = &e->xexpose;
 213
 214         if(ev->count == 0) {
 215                 if(barwin == ev->window)
 216                         drawstatus();
 217                 else if((c = getctitle(ev->window)))
 218                         drawtitle(c);
 219         }
 220 }
 221
 222 static void
 223 keypress(XEvent *e)
 224 {
 225         static unsigned int len = sizeof(key) / sizeof(key[0]);
 226         unsigned int i;
 227         KeySym keysym;
 228         XKeyEvent *ev = &e->xkey;
 229         ev->state &= valid_mask;
 230
 231         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 232         for(i = 0; i < len; i++)
 233                 if((keysym == key[i].keysym) && ((key[i].mod & valid_mask) == ev->state)) {
 234                         if(key[i].func)
 235                                 key[i].func(&key[i].arg);
 236                         return;
 237                 }
 238 }
 239
 240 static void
 241 leavenotify(XEvent *e)
 242 {
 243         XCrossingEvent *ev = &e->xcrossing;
 244
 245         if((ev->window == root) && !ev->same_screen)
 246                 issel = True;
 247 }
 248
 249 static void
 250 maprequest(XEvent *e)
 251 {
 252         static XWindowAttributes wa;
 253         XMapRequestEvent *ev = &e->xmaprequest;
 254
 255         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 256                 return;
 257
 258         if(wa.override_redirect) {
 259                 XSelectInput(dpy, ev->window,
 260                                 (StructureNotifyMask | PropertyChangeMask));
 261                 return;
 262         }
 263
 264         if(!getclient(ev->window))
 265                 manage(ev->window, &wa);
 266 }
 267
 268 static void
 269 propertynotify(XEvent *e)
 270 {
 271         Client *c;
 272         Window trans;
 273         XPropertyEvent *ev = &e->xproperty;
 274
 275         if(ev->state == PropertyDelete)
 276                 return; /* ignore */
 277
 278         if((c = getclient(ev->window))) {
 279                 if(ev->atom == wmatom[WMProtocols]) {
 280                         c->proto = getproto(c->win);
 281                         return;
 282                 }
 283                 switch (ev->atom) {
 284                         default: break;
 285                         case XA_WM_TRANSIENT_FOR:
 286                                 XGetTransientForHint(dpy, c->win, &trans);
 287                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 288                                         arrange(NULL);
 289                                 break;
 290                         case XA_WM_NORMAL_HINTS:
 291                                 setsize(c);
 292                                 break;
 293                 }
 294                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 295                         settitle(c);
 296                         drawtitle(c);
 297                 }
 298         }
 299 }
 300
 301 static void
 302 unmapnotify(XEvent *e)
 303 {
 304         Client *c;
 305         XUnmapEvent *ev = &e->xunmap;
 306
 307         if((c = getclient(ev->window)))
 308                 unmanage(c);
 309 }
 310
 311 /* extern */
 312
 313 void (*handler[LASTEvent]) (XEvent *) = {
 314         [ButtonPress] = buttonpress,
 315         [ConfigureRequest] = configurerequest,
 316         [DestroyNotify] = destroynotify,
 317         [EnterNotify] = enternotify,
 318         [LeaveNotify] = leavenotify,
 319         [Expose] = expose,
 320         [KeyPress] = keypress,
 321         [MapRequest] = maprequest,
 322         [PropertyNotify] = propertynotify,
 323         [UnmapNotify] = unmapnotify
 324 };
 325
 326 void
 327 grabkeys()
 328 {
 329         static unsigned int len = sizeof(key) / sizeof(key[0]);
 330         unsigned int i;
 331         KeyCode code;
 332
 333         for(i = 0; i < len; i++) {
 334                 code = XKeysymToKeycode(dpy, key[i].keysym);
 335                 XUngrabKey(dpy, code, key[i].mod, root);
 336                 XUngrabKey(dpy, code, key[i].mod | NUMLOCKMASK, root);
 337                 XUngrabKey(dpy, code, key[i].mod | NUMLOCKMASK | LockMask, root);
 338                 XGrabKey(dpy, code, key[i].mod, root, True,
 339                                 GrabModeAsync, GrabModeAsync);
 340                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK, root, True,
 341                                 GrabModeAsync, GrabModeAsync);
 342                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK | LockMask, root, True,
 343                                 GrabModeAsync, GrabModeAsync);
 344         }
 345 }