dwm/event.c

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/* See LICENSE file for copyright and license details. */
#include "dwm.h"
#include <stdio.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)(const char *arg);
const char *arg;
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} Key;
KEYS
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#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
#define MOUSEMASK (BUTTONMASK | PointerMotionMask)
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static Client *
getclient(Window w) {
Client *c;
for(c = clients; c && c->win != w; c = c->next);
return c;
}
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static void
movemouse(Client *c) {
int x1, y1, ocx, ocy, di, nx, ny;
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unsigned int dui;
Window dummy;
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XEvent ev;
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ocx = nx = c->x;
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ocy = ny = 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(;;) {
XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
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switch (ev.type) {
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case ButtonRelease:
XUngrabPointer(dpy, CurrentTime);
return;
case ConfigureRequest:
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case Expose:
case MapRequest:
handler[ev.type](&ev);
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break;
case MotionNotify:
XSync(dpy, False);
nx = ocx + (ev.xmotion.x - x1);
ny = ocy + (ev.xmotion.y - y1);
if(abs(wax + nx) < SNAP)
nx = wax;
else if(abs((wax + waw) - (nx + c->w + 2 * c->border)) < SNAP)
nx = wax + waw - c->w - 2 * c->border;
if(abs(way - ny) < SNAP)
ny = way;
else if(abs((way + wah) - (ny + c->h + 2 * c->border)) < SNAP)
ny = way + wah - c->h - 2 * c->border;
resize(c, nx, ny, c->w, c->h, False);
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break;
}
}
}
static void
resizemouse(Client *c) {
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int ocx, ocy;
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int nw, nh;
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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->border - 1, c->h + c->border - 1);
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for(;;) {
XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
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switch(ev.type) {
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case ButtonRelease:
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XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
c->w + c->border - 1, c->h + c->border - 1);
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XUngrabPointer(dpy, CurrentTime);
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while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
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return;
case ConfigureRequest:
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case Expose:
case MapRequest:
handler[ev.type](&ev);
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break;
case MotionNotify:
XSync(dpy, False);
if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
nw = 1;
if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
nh = 1;
resize(c, c->x, c->y, nw, nh, True);
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break;
}
}
}
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static void
buttonpress(XEvent *e) {
static char buf[32];
unsigned int i, x;
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Client *c;
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XButtonPressedEvent *ev = &e->xbutton;
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buf[0] = 0;
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if(barwin == ev->window) {
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x = 0;
for(i = 0; i < ntags; i++) {
x += textw(tags[i]);
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if(ev->x < x) {
snprintf(buf, sizeof buf, "%d", i);
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if(ev->button == Button1) {
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if(ev->state & MODKEY)
tag(buf);
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else
view(buf);
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}
else if(ev->button == Button3) {
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if(ev->state & MODKEY)
toggletag(buf);
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else
toggleview(buf);
}
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return;
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}
}
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if(ev->x < x + blw)
switch(ev->button) {
case Button1:
setlayout(NULL);
break;
}
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}
else if((c = getclient(ev->window))) {
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focus(c);
if(CLEANMASK(ev->state) != MODKEY)
return;
if(ev->button == Button1 && (lt->arrange == floating || c->isfloating)) {
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restack();
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movemouse(c);
}
else if(ev->button == Button2)
zoom(NULL);
else if(ev->button == Button3
&& (lt->arrange == floating || c->isfloating) && !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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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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if(ev->value_mask & CWBorderWidth)
c->border = ev->border_width;
if(c->isfixed || c->isfloating || (lt->arrange == floating)) {
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;
if((c->x + c->w) > sw && c->isfloating)
c->x = sw / 2 - c->w / 2; /* center in x direction */
if((c->y + c->h) > sh && c->isfloating)
c->y = sh / 2 - c->h / 2; /* center in y direction */
if((ev->value_mask & (CWX | CWY))
&& !(ev->value_mask & (CWWidth | CWHeight)))
configure(c);
if(isvisible(c))
XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
}
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else
configure(c);
}
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);
}
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XSync(dpy, False);
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}
static void
configurenotify(XEvent *e) {
XConfigureEvent *ev = &e->xconfigure;
if (ev->window == root && (ev->width != sw || ev->height != sh)) {
sw = ev->width;
sh = ev->height;
XFreePixmap(dpy, dc.drawable);
dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
XResizeWindow(dpy, barwin, sw, bh);
updatebarpos();
lt->arrange();
}
}
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static void
createnotify(XEvent *e) {
static XWindowAttributes wa;
XCreateWindowEvent *ev = &e->xcreatewindow;
if(!XGetWindowAttributes(dpy, ev->window, &wa))
return;
if(wa.override_redirect)
return;
if(!getclient(ev->window) && (wa.map_state == IsViewable))
manage(ev->window, &wa);
}
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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;
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if((c = getclient(ev->window)))
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focus(c);
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else if(ev->window == root) {
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selscreen = True;
focus(NULL);
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}
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}
static void
expose(XEvent *e) {
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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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}
}
static void
keypress(XEvent *e) {
static unsigned int len = sizeof key / sizeof key[0];
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unsigned int i;
KeySym keysym;
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XKeyEvent *ev = &e->xkey;
keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
for(i = 0; i < len; i++)
if(keysym == key[i].keysym
&& CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
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{
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if(key[i].func)
key[i].func(key[i].arg);
}
}
static void
leavenotify(XEvent *e) {
XCrossingEvent *ev = &e->xcrossing;
if((ev->window == root) && !ev->same_screen) {
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selscreen = False;
focus(NULL);
}
}
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)
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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))) {
switch (ev->atom) {
default: break;
case XA_WM_TRANSIENT_FOR:
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XGetTransientForHint(dpy, c->win, &trans);
if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
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lt->arrange();
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break;
case XA_WM_NORMAL_HINTS:
updatesizehints(c);
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break;
}
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if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
updatetitle(c);
if(c == sel)
drawstatus();
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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,
[ConfigureNotify] = configurenotify,
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[CreateNotify] = createnotify,
[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);
}
}