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 CMDS
  21 KEYS
  22
  23 static unsigned int valid_mask =  255 &  ~(NUMLOCKMASK | LockMask);
  24
  25 static void
  26 movemouse(Client *c)
  27 {
  28         int x1, y1, ocx, ocy, di;
  29         unsigned int dui;
  30         Window dummy;
  31         XEvent ev;
  32
  33         ocx = c->x;
  34         ocy = c->y;
  35         if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
  36                         None, cursor[CurMove], CurrentTime) != GrabSuccess)
  37                 return;
  38         XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  39         for(;;) {
  40                 XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
  41                 switch (ev.type) {
  42                 default: break;
  43                 case Expose:
  44                         handler[Expose](&ev);
  45                         break;
  46                 case MotionNotify:
  47                         XSync(dpy, False);
  48                         c->x = ocx + (ev.xmotion.x - x1);
  49                         c->y = ocy + (ev.xmotion.y - y1);
  50                         resize(c, False, TopLeft);
  51                         break;
  52                 case ButtonRelease:
  53                         XUngrabPointer(dpy, CurrentTime);
  54                         return;
  55                 }
  56         }
  57 }
  58
  59 static void
  60 resizemouse(Client *c)
  61 {
  62         int ocx, ocy;
  63         Corner sticky;
  64         XEvent ev;
  65
  66         ocx = c->x;
  67         ocy = c->y;
  68         if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
  69                                 None, cursor[CurResize], CurrentTime) != GrabSuccess)
  70                 return;
  71         XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
  72         for(;;) {
  73                 XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
  74                 switch(ev.type) {
  75                 default: break;
  76                 case Expose:
  77                         handler[Expose](&ev);
  78                         break;
  79                 case MotionNotify:
  80                         XSync(dpy, False);
  81                         c->w = abs(ocx - ev.xmotion.x);
  82                         c->h = abs(ocy - ev.xmotion.y);
  83                         c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
  84                         c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
  85                         if(ocx <= ev.xmotion.x)
  86                                 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
  87                         else
  88                                 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
  89                         resize(c, True, sticky);
  90                         break;
  91                 case ButtonRelease:
  92                         XUngrabPointer(dpy, CurrentTime);
  93                         return;
  94                 }
  95         }
  96 }
  97
  98 static void
  99 buttonpress(XEvent *e)
 100 {
 101         int x;
 102         Arg a;
 103         Client *c;
 104         XButtonPressedEvent *ev = &e->xbutton;
 105
 106         if(barwin == ev->window) {
 107                 switch(ev->button) {
 108                 default:
 109                         x = 0;
 110                         for(a.i = 0; a.i < TLast; a.i++) {
 111                                 x += textw(tags[a.i]);
 112                                 if(ev->x < x) {
 113                                         view(&a);
 114                                         break;
 115                                 }
 116                         }
 117                         break;
 118                 case Button4:
 119                         a.i = (tsel + 1 < TLast) ? tsel + 1 : 0;
 120                         view(&a);
 121                         break;
 122                 case Button5:
 123                         a.i = (tsel - 1 >= 0) ? tsel - 1 : TLast - 1;
 124                         view(&a);
 125                         break;
 126                 }
 127         }
 128         else if((c = getclient(ev->window))) {
 129                 focus(c);
 130                 switch(ev->button) {
 131                 default:
 132                         break;
 133                 case Button1:
 134                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 135                                 higher(c);
 136                                 movemouse(c);
 137                         }
 138                         break;
 139                 case Button2:
 140                         lower(c);
 141                         break;
 142                 case Button3:
 143                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 144                                 higher(c);
 145                                 resizemouse(c);
 146                         }
 147                         break;
 148                 }
 149         }
 150 }
 151
 152 static void
 153 configurerequest(XEvent *e)
 154 {
 155         Client *c;
 156         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 157         XWindowChanges wc;
 158
 159         ev->value_mask &= ~CWSibling;
 160         if((c = getclient(ev->window))) {
 161                 gravitate(c, True);
 162                 if(ev->value_mask & CWX)
 163                         c->x = ev->x;
 164                 if(ev->value_mask & CWY)
 165                         c->y = ev->y;
 166                 if(ev->value_mask & CWWidth)
 167                         c->w = ev->width;
 168                 if(ev->value_mask & CWHeight)
 169                         c->h = ev->height;
 170                 if(ev->value_mask & CWBorderWidth)
 171                         c->border = 1;
 172                 gravitate(c, False);
 173                 resize(c, True, TopLeft);
 174         }
 175
 176         wc.x = ev->x;
 177         wc.y = ev->y;
 178         wc.width = ev->width;
 179         wc.height = ev->height;
 180         wc.border_width = 1;
 181         wc.sibling = None;
 182         wc.stack_mode = Above;
 183         ev->value_mask &= ~CWStackMode;
 184         ev->value_mask |= CWBorderWidth;
 185         XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 186         XSync(dpy, False);
 187 }
 188
 189 static void
 190 destroynotify(XEvent *e)
 191 {
 192         Client *c;
 193         XDestroyWindowEvent *ev = &e->xdestroywindow;
 194
 195         if((c = getclient(ev->window)))
 196                 unmanage(c);
 197 }
 198
 199 static void
 200 enternotify(XEvent *e)
 201 {
 202         Client *c;
 203         XCrossingEvent *ev = &e->xcrossing;
 204
 205         if(ev->detail == NotifyInferior)
 206                 return;
 207
 208         if((c = getclient(ev->window)))
 209                 focus(c);
 210         else if(ev->window == root)
 211                 issel = True;
 212 }
 213
 214 static void
 215 expose(XEvent *e)
 216 {
 217         Client *c;
 218         XExposeEvent *ev = &e->xexpose;
 219
 220         if(ev->count == 0) {
 221                 if(barwin == ev->window)
 222                         drawstatus();
 223                 else if((c = getctitle(ev->window)))
 224                         drawtitle(c);
 225         }
 226 }
 227
 228 static void
 229 keypress(XEvent *e)
 230 {
 231         static unsigned int len = sizeof(key) / sizeof(key[0]);
 232         unsigned int i;
 233         KeySym keysym;
 234         XKeyEvent *ev = &e->xkey;
 235         ev->state &= valid_mask;
 236
 237         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 238         for(i = 0; i < len; i++)
 239                 if((keysym == key[i].keysym) && ((key[i].mod & valid_mask) == ev->state)) {
 240                         if(key[i].func)
 241                                 key[i].func(&key[i].arg);
 242                         return;
 243                 }
 244 }
 245
 246 static void
 247 leavenotify(XEvent *e)
 248 {
 249         XCrossingEvent *ev = &e->xcrossing;
 250
 251         if((ev->window == root) && !ev->same_screen)
 252                 issel = True;
 253 }
 254
 255 static void
 256 maprequest(XEvent *e)
 257 {
 258         static XWindowAttributes wa;
 259         XMapRequestEvent *ev = &e->xmaprequest;
 260
 261         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 262                 return;
 263
 264         if(wa.override_redirect) {
 265                 XSelectInput(dpy, ev->window,
 266                                 (StructureNotifyMask | PropertyChangeMask));
 267                 return;
 268         }
 269
 270         if(!getclient(ev->window))
 271                 manage(ev->window, &wa);
 272 }
 273
 274 static void
 275 propertynotify(XEvent *e)
 276 {
 277         Client *c;
 278         Window trans;
 279         XPropertyEvent *ev = &e->xproperty;
 280
 281         if(ev->state == PropertyDelete)
 282                 return; /* ignore */
 283
 284         if((c = getclient(ev->window))) {
 285                 if(ev->atom == wmatom[WMProtocols]) {
 286                         c->proto = getproto(c->win);
 287                         return;
 288                 }
 289                 switch (ev->atom) {
 290                         default: break;
 291                         case XA_WM_TRANSIENT_FOR:
 292                                 XGetTransientForHint(dpy, c->win, &trans);
 293                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 294                                         arrange(NULL);
 295                                 break;
 296                         case XA_WM_NORMAL_HINTS:
 297                                 setsize(c);
 298                                 break;
 299                 }
 300                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 301                         settitle(c);
 302                         drawtitle(c);
 303                 }
 304         }
 305 }
 306
 307 static void
 308 unmapnotify(XEvent *e)
 309 {
 310         Client *c;
 311         XUnmapEvent *ev = &e->xunmap;
 312
 313         if((c = getclient(ev->window)))
 314                 unmanage(c);
 315 }
 316
 317 /* extern */
 318
 319 void (*handler[LASTEvent]) (XEvent *) = {
 320         [ButtonPress] = buttonpress,
 321         [ConfigureRequest] = configurerequest,
 322         [DestroyNotify] = destroynotify,
 323         [EnterNotify] = enternotify,
 324         [LeaveNotify] = leavenotify,
 325         [Expose] = expose,
 326         [KeyPress] = keypress,
 327         [MapRequest] = maprequest,
 328         [PropertyNotify] = propertynotify,
 329         [UnmapNotify] = unmapnotify
 330 };
 331
 332 void
 333 grabkeys()
 334 {
 335         static unsigned int len = sizeof(key) / sizeof(key[0]);
 336         unsigned int i;
 337         KeyCode code;
 338
 339         for(i = 0; i < len; i++) {
 340                 code = XKeysymToKeycode(dpy, key[i].keysym);
 341                 XUngrabKey(dpy, code, key[i].mod, root);
 342                 XUngrabKey(dpy, code, key[i].mod | NUMLOCKMASK, root);
 343                 XUngrabKey(dpy, code, key[i].mod | NUMLOCKMASK | LockMask, root);
 344                 XGrabKey(dpy, code, key[i].mod, root, True,
 345                                 GrabModeAsync, GrabModeAsync);
 346                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK, root, True,
 347                                 GrabModeAsync, GrabModeAsync);
 348                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK | LockMask, root, True,
 349                                 GrabModeAsync, GrabModeAsync);
 350         }
 351 }