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                         viewnext(&a);
 120                         break;
 121                 case Button5:
 122                         viewprev(&a);
 123                         break;
 124                 }
 125         }
 126         else if((c = getclient(ev->window))) {
 127                 focus(c);
 128                 switch(ev->button) {
 129                 default:
 130                         break;
 131                 case Button1:
 132                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 133                                 higher(c);
 134                                 movemouse(c);
 135                         }
 136                         break;
 137                 case Button2:
 138                         lower(c);
 139                         break;
 140                 case Button3:
 141                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 142                                 higher(c);
 143                                 resizemouse(c);
 144                         }
 145                         break;
 146                 }
 147         }
 148 }
 149
 150 static void
 151 configurerequest(XEvent *e)
 152 {
 153         Client *c;
 154         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 155         XWindowChanges wc;
 156
 157         ev->value_mask &= ~CWSibling;
 158         if((c = getclient(ev->window))) {
 159                 gravitate(c, True);
 160                 if(ev->value_mask & CWX)
 161                         c->x = ev->x;
 162                 if(ev->value_mask & CWY)
 163                         c->y = ev->y;
 164                 if(ev->value_mask & CWWidth)
 165                         c->w = ev->width;
 166                 if(ev->value_mask & CWHeight)
 167                         c->h = ev->height;
 168                 if(ev->value_mask & CWBorderWidth)
 169                         c->border = 1;
 170                 gravitate(c, False);
 171                 resize(c, True, TopLeft);
 172         }
 173
 174         wc.x = ev->x;
 175         wc.y = ev->y;
 176         wc.width = ev->width;
 177         wc.height = ev->height;
 178         wc.border_width = 1;
 179         wc.sibling = None;
 180         wc.stack_mode = Above;
 181         ev->value_mask &= ~CWStackMode;
 182         ev->value_mask |= CWBorderWidth;
 183         XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 184         XSync(dpy, False);
 185 }
 186
 187 static void
 188 destroynotify(XEvent *e)
 189 {
 190         Client *c;
 191         XDestroyWindowEvent *ev = &e->xdestroywindow;
 192
 193         if((c = getclient(ev->window)))
 194                 unmanage(c);
 195 }
 196
 197 static void
 198 enternotify(XEvent *e)
 199 {
 200         Client *c;
 201         XCrossingEvent *ev = &e->xcrossing;
 202
 203         if(ev->detail == NotifyInferior)
 204                 return;
 205
 206         if((c = getclient(ev->window)))
 207                 focus(c);
 208         else if(ev->window == root)
 209                 issel = True;
 210 }
 211
 212 static void
 213 expose(XEvent *e)
 214 {
 215         Client *c;
 216         XExposeEvent *ev = &e->xexpose;
 217
 218         if(ev->count == 0) {
 219                 if(barwin == ev->window)
 220                         drawstatus();
 221                 else if((c = getctitle(ev->window)))
 222                         drawtitle(c);
 223         }
 224 }
 225
 226 static void
 227 keypress(XEvent *e)
 228 {
 229         static unsigned int len = sizeof(key) / sizeof(key[0]);
 230         unsigned int i;
 231         KeySym keysym;
 232         XKeyEvent *ev = &e->xkey;
 233         ev->state &= valid_mask;
 234
 235         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 236         for(i = 0; i < len; i++)
 237                 if((keysym == key[i].keysym) && ((key[i].mod & valid_mask) == ev->state)) {
 238                         if(key[i].func)
 239                                 key[i].func(&key[i].arg);
 240                         return;
 241                 }
 242 }
 243
 244 static void
 245 leavenotify(XEvent *e)
 246 {
 247         XCrossingEvent *ev = &e->xcrossing;
 248
 249         if((ev->window == root) && !ev->same_screen)
 250                 issel = True;
 251 }
 252
 253 static void
 254 maprequest(XEvent *e)
 255 {
 256         static XWindowAttributes wa;
 257         XMapRequestEvent *ev = &e->xmaprequest;
 258
 259         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 260                 return;
 261
 262         if(wa.override_redirect) {
 263                 XSelectInput(dpy, ev->window,
 264                                 (StructureNotifyMask | PropertyChangeMask));
 265                 return;
 266         }
 267
 268         if(!getclient(ev->window))
 269                 manage(ev->window, &wa);
 270 }
 271
 272 static void
 273 propertynotify(XEvent *e)
 274 {
 275         Client *c;
 276         Window trans;
 277         XPropertyEvent *ev = &e->xproperty;
 278
 279         if(ev->state == PropertyDelete)
 280                 return; /* ignore */
 281
 282         if((c = getclient(ev->window))) {
 283                 if(ev->atom == wmatom[WMProtocols]) {
 284                         c->proto = getproto(c->win);
 285                         return;
 286                 }
 287                 switch (ev->atom) {
 288                         default: break;
 289                         case XA_WM_TRANSIENT_FOR:
 290                                 XGetTransientForHint(dpy, c->win, &trans);
 291                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 292                                         arrange(NULL);
 293                                 break;
 294                         case XA_WM_NORMAL_HINTS:
 295                                 setsize(c);
 296                                 break;
 297                 }
 298                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 299                         settitle(c);
 300                         drawtitle(c);
 301                 }
 302         }
 303 }
 304
 305 static void
 306 unmapnotify(XEvent *e)
 307 {
 308         Client *c;
 309         XUnmapEvent *ev = &e->xunmap;
 310
 311         if((c = getclient(ev->window)))
 312                 unmanage(c);
 313 }
 314
 315 /* extern */
 316
 317 void (*handler[LASTEvent]) (XEvent *) = {
 318         [ButtonPress] = buttonpress,
 319         [ConfigureRequest] = configurerequest,
 320         [DestroyNotify] = destroynotify,
 321         [EnterNotify] = enternotify,
 322         [LeaveNotify] = leavenotify,
 323         [Expose] = expose,
 324         [KeyPress] = keypress,
 325         [MapRequest] = maprequest,
 326         [PropertyNotify] = propertynotify,
 327         [UnmapNotify] = unmapnotify
 328 };
 329
 330 void
 331 grabkeys()
 332 {
 333         static unsigned int len = sizeof(key) / sizeof(key[0]);
 334         unsigned int i;
 335         KeyCode code;
 336
 337         for(i = 0; i < len; i++) {
 338                 code = XKeysymToKeycode(dpy, key[i].keysym);
 339                 XUngrabKey(dpy, code, key[i].mod, root);
 340                 XUngrabKey(dpy, code, key[i].mod | NUMLOCKMASK, root);
 341                 XUngrabKey(dpy, code, key[i].mod | NUMLOCKMASK | LockMask, root);
 342                 XGrabKey(dpy, code, key[i].mod, root, True,
 343                                 GrabModeAsync, GrabModeAsync);
 344                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK, root, True,
 345                                 GrabModeAsync, GrabModeAsync);
 346                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK | LockMask, root, True,
 347                                 GrabModeAsync, GrabModeAsync);
 348         }
 349 }