archy-dwm/event.c

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/* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
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* See LICENSE file for license details.
*/
#include "dwm.h"
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#include <stdlib.h>
#include <X11/keysym.h>
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#include <X11/Xatom.h>
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/* static */
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typedef struct {
unsigned long mod;
KeySym keysym;
void (*func)(Arg *arg);
Arg arg;
} Key;
KEYS
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#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
#define MOUSEMASK (BUTTONMASK | PointerMotionMask)
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static void
movemouse(Client *c) {
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int x1, y1, ocx, ocy, di;
unsigned int dui;
Window dummy;
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XEvent ev;
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ocx = c->x;
ocy = c->y;
if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
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None, cursor[CurMove], CurrentTime) != GrabSuccess)
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return;
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c->ismax = False;
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XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
for(;;) {
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XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
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switch (ev.type) {
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case ButtonRelease:
resize(c, True, TopLeft);
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XUngrabPointer(dpy, CurrentTime);
return;
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case Expose:
handler[Expose](&ev);
break;
case MotionNotify:
XSync(dpy, False);
c->x = ocx + (ev.xmotion.x - x1);
c->y = ocy + (ev.xmotion.y - y1);
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if(abs(wax + c->x) < SNAP)
c->x = wax;
else if(abs((wax + waw) - (c->x + c->w)) < SNAP)
c->x = wax + waw - c->w - 2 * BORDERPX;
if(abs(way - c->y) < SNAP)
c->y = way;
else if(abs((way + wah) - (c->y + c->h)) < SNAP)
c->y = way + wah - c->h - 2 * BORDERPX;
resize(c, False, TopLeft);
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break;
}
}
}
static void
resizemouse(Client *c) {
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int ocx, ocy;
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int nw, nh;
Corner sticky;
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XEvent ev;
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ocx = c->x;
ocy = c->y;
if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
None, cursor[CurResize], CurrentTime) != GrabSuccess)
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return;
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c->ismax = False;
XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
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for(;;) {
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XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
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switch(ev.type) {
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case ButtonRelease:
resize(c, True, TopLeft);
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XUngrabPointer(dpy, CurrentTime);
return;
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case Expose:
handler[Expose](&ev);
break;
case MotionNotify:
XSync(dpy, False);
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if((nw = abs(ocx - ev.xmotion.x)))
c->w = nw;
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if((nh = abs(ocy - ev.xmotion.y)))
c->h = nh;
c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
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if(ocx <= ev.xmotion.x)
sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
else
sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
resize(c, True, sticky);
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break;
}
}
}
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static void
buttonpress(XEvent *e) {
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int x;
Arg a;
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Client *c;
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XButtonPressedEvent *ev = &e->xbutton;
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if(barwin == ev->window) {
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x = 0;
for(a.i = 0; a.i < ntags; a.i++) {
x += textw(tags[a.i]);
if(ev->x < x) {
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if(ev->button == Button1) {
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if(ev->state & MODKEY)
tag(&a);
else
view(&a);
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}
else if(ev->button == Button3) {
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if(ev->state & MODKEY)
toggletag(&a);
else
toggleview(&a);
}
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return;
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}
}
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if((ev->x < x + bmw) && (ev->button == Button1))
togglemode(NULL);
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}
else if((c = getclient(ev->window))) {
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focus(c);
if(CLEANMASK(ev->state) != MODKEY)
return;
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if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
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restack();
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movemouse(c);
}
else if(ev->button == Button2)
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zoom(NULL);
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else if(ev->button == Button3 && (arrange == dofloat || c->isfloat) &&
!c->isfixed) {
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restack();
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resizemouse(c);
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}
}
}
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static void
configurerequest(XEvent *e) {
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unsigned long newmask;
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Client *c;
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XConfigureRequestEvent *ev = &e->xconfigurerequest;
XWindowChanges wc;
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if((c = getclient(ev->window))) {
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c->ismax = False;
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gravitate(c, True);
if(ev->value_mask & CWX)
c->x = ev->x;
if(ev->value_mask & CWY)
c->y = ev->y;
if(ev->value_mask & CWWidth)
c->w = ev->width;
if(ev->value_mask & CWHeight)
c->h = ev->height;
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if(ev->value_mask & CWBorderWidth)
c->border = ev->border_width;
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gravitate(c, False);
wc.x = c->x;
wc.y = c->y;
wc.width = c->w;
wc.height = c->h;
newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
if(newmask)
XConfigureWindow(dpy, c->win, newmask, &wc);
else
configure(c);
XSync(dpy, False);
if(c->isfloat) {
resize(c, False, TopLeft);
if(!isvisible(c))
ban(c);
}
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else
arrange();
}
else {
wc.x = ev->x;
wc.y = ev->y;
wc.width = ev->width;
wc.height = ev->height;
wc.border_width = ev->border_width;
wc.sibling = ev->above;
wc.stack_mode = ev->detail;
XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
XSync(dpy, False);
}
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}
static void
destroynotify(XEvent *e) {
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Client *c;
XDestroyWindowEvent *ev = &e->xdestroywindow;
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if((c = getclient(ev->window)))
unmanage(c);
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}
static void
enternotify(XEvent *e) {
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Client *c;
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XCrossingEvent *ev = &e->xcrossing;
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if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
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return;
if(((c = getclient(ev->window)) || (c = getctitle(ev->window))) && isvisible(c))
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focus(c);
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else if(ev->window == root) {
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issel = True;
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XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
drawall();
}
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}
static void
expose(XEvent *e) {
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Client *c;
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XExposeEvent *ev = &e->xexpose;
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if(ev->count == 0) {
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if(barwin == ev->window)
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drawstatus();
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else if((c = getctitle(ev->window)))
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drawtitle(c);
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}
}
static void
keypress(XEvent *e) {
static unsigned int len = sizeof key / sizeof key[0];
unsigned int i;
KeySym keysym;
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XKeyEvent *ev = &e->xkey;
keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
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for(i = 0; i < len; i++) {
if(keysym == key[i].keysym
&& CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
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{
if(key[i].func)
key[i].func(&key[i].arg);
return;
}
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}
}
static void
leavenotify(XEvent *e) {
XCrossingEvent *ev = &e->xcrossing;
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if((ev->window == root) && !ev->same_screen) {
issel = False;
drawall();
}
}
static void
mappingnotify(XEvent *e) {
XMappingEvent *ev = &e->xmapping;
XRefreshKeyboardMapping(ev);
if(ev->request == MappingKeyboard)
grabkeys();
}
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static void
maprequest(XEvent *e) {
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static XWindowAttributes wa;
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XMapRequestEvent *ev = &e->xmaprequest;
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if(!XGetWindowAttributes(dpy, ev->window, &wa))
return;
if(wa.override_redirect) {
XSelectInput(dpy, ev->window,
(StructureNotifyMask | PropertyChangeMask));
return;
}
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if(!getclient(ev->window))
manage(ev->window, &wa);
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}
static void
propertynotify(XEvent *e) {
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Client *c;
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Window trans;
XPropertyEvent *ev = &e->xproperty;
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if(ev->state == PropertyDelete)
return; /* ignore */
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if((c = getclient(ev->window))) {
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if(ev->atom == wmatom[WMProtocols]) {
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c->proto = getproto(c->win);
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return;
}
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switch (ev->atom) {
default: break;
case XA_WM_TRANSIENT_FOR:
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XGetTransientForHint(dpy, c->win, &trans);
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if(!c->isfloat && (c->isfloat = (trans != 0)))
arrange();
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break;
case XA_WM_NORMAL_HINTS:
updatesize(c);
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break;
}
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if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
updatetitle(c);
resizetitle(c);
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drawtitle(c);
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}
}
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}
static void
unmapnotify(XEvent *e) {
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Client *c;
XUnmapEvent *ev = &e->xunmap;
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if((c = getclient(ev->window)))
unmanage(c);
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}
/* extern */
void (*handler[LASTEvent]) (XEvent *) = {
[ButtonPress] = buttonpress,
[ConfigureRequest] = configurerequest,
[DestroyNotify] = destroynotify,
[EnterNotify] = enternotify,
[LeaveNotify] = leavenotify,
[Expose] = expose,
[KeyPress] = keypress,
[MappingNotify] = mappingnotify,
[MapRequest] = maprequest,
[PropertyNotify] = propertynotify,
[UnmapNotify] = unmapnotify
};
void
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grabkeys(void) {
static unsigned int len = sizeof key / sizeof key[0];
unsigned int i;
KeyCode code;
XUngrabKey(dpy, AnyKey, AnyModifier, root);
for(i = 0; i < len; i++) {
code = XKeysymToKeycode(dpy, key[i].keysym);
XGrabKey(dpy, code, key[i].mod, root, True,
GrabModeAsync, GrabModeAsync);
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XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
GrabModeAsync, GrabModeAsync);
XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
GrabModeAsync, GrabModeAsync);
XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
GrabModeAsync, GrabModeAsync);
}
}
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void
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procevent(void) {
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XEvent ev;
while(XPending(dpy)) {
XNextEvent(dpy, &ev);
if(handler[ev.type])
(handler[ev.type])(&ev); /* call handler */
}
}