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419 lines
9.3 KiB
419 lines
9.3 KiB
/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
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* See LICENSE file for license details.
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*/
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#include "dwm.h"
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#include <stdlib.h>
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#include <string.h>
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#include <X11/Xatom.h>
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#include <X11/Xutil.h>
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/* static */
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static void
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grabbuttons(Client *c, Bool focused) {
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XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
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if(focused) {
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XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
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GrabModeAsync, GrabModeSync, None, None);
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XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
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GrabModeAsync, GrabModeSync, None, None);
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XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
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GrabModeAsync, GrabModeSync, None, None);
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XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
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GrabModeAsync, GrabModeSync, None, None);
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XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
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GrabModeAsync, GrabModeSync, None, None);
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XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
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GrabModeAsync, GrabModeSync, None, None);
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XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
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GrabModeAsync, GrabModeSync, None, None);
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XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
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GrabModeAsync, GrabModeSync, None, None);
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XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
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GrabModeAsync, GrabModeSync, None, None);
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XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
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GrabModeAsync, GrabModeSync, None, None);
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XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
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GrabModeAsync, GrabModeSync, None, None);
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XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
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GrabModeAsync, GrabModeSync, None, None);
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}
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else
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XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
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GrabModeAsync, GrabModeSync, None, None);
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}
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static Bool
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isprotodel(Client *c) {
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int i, n;
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Atom *protocols;
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Bool ret = False;
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if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
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for(i = 0; !ret && i < n; i++)
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if(protocols[i] == wmatom[WMDelete])
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ret = True;
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XFree(protocols);
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}
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return ret;
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}
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static void
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setclientstate(Client *c, long state) {
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long data[] = {state, None};
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XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
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PropModeReplace, (unsigned char *)data, 2);
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}
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static int
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xerrordummy(Display *dsply, XErrorEvent *ee) {
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return 0;
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}
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/* extern */
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void
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attach(Client *c) {
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if(clients)
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clients->prev = c;
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c->next = clients;
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clients = c;
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}
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void
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attachstack(Client *c) {
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c->snext = stack;
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stack = c;
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}
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void
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configure(Client *c) {
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XConfigureEvent ce;
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ce.type = ConfigureNotify;
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ce.display = dpy;
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ce.event = c->win;
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ce.window = c->win;
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ce.x = c->x;
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ce.y = c->y;
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ce.width = c->w;
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ce.height = c->h;
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ce.border_width = c->border;
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ce.above = None;
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ce.override_redirect = False;
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XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
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}
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void
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detach(Client *c) {
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if(c->prev)
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c->prev->next = c->next;
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if(c->next)
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c->next->prev = c->prev;
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if(c == clients)
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clients = c->next;
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c->next = c->prev = NULL;
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}
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void
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detachstack(Client *c) {
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Client **tc;
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for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
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*tc = c->snext;
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}
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void
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focus(Client *c) {
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if(c && !isvisible(c))
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return;
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if(sel && sel != c) {
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grabbuttons(sel, False);
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XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
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}
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if(c) {
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detachstack(c);
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attachstack(c);
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grabbuttons(c, True);
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}
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sel = c;
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drawstatus();
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if(!selscreen)
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return;
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if(c) {
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XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
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XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
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}
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else
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XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
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}
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void
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focusnext(Arg *arg) {
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Client *c;
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if(!sel)
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return;
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for(c = sel->next; c && !isvisible(c); c = c->next);
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if(!c)
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for(c = clients; c && !isvisible(c); c = c->next);
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if(c) {
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focus(c);
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restack();
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}
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}
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void
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focusprev(Arg *arg) {
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Client *c;
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if(!sel)
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return;
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for(c = sel->prev; c && !isvisible(c); c = c->prev);
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if(!c) {
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for(c = clients; c && c->next; c = c->next);
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for(; c && !isvisible(c); c = c->prev);
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}
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if(c) {
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focus(c);
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restack();
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}
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}
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Client *
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getclient(Window w) {
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Client *c;
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for(c = clients; c; c = c->next)
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if(c->win == w)
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return c;
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return NULL;
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}
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void
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killclient(Arg *arg) {
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if(!sel)
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return;
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if(isprotodel(sel))
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sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
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else
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XKillClient(dpy, sel->win);
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}
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void
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manage(Window w, XWindowAttributes *wa) {
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Client *c, *t;
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Window trans;
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XWindowChanges wc;
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c = emallocz(sizeof(Client));
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c->tags = emallocz(ntags * sizeof(Bool));
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c->win = w;
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c->x = wa->x;
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c->y = wa->y;
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c->w = wa->width;
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c->h = wa->height;
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if(c->w == sw && c->h == sh) {
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c->border = 0;
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c->x = sx;
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c->y = sy;
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}
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else {
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c->border = BORDERPX;
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if(c->x + c->w + 2 * c->border > wax + waw)
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c->x = wax + waw - c->w - 2 * c->border;
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if(c->y + c->h + 2 * c->border > way + wah)
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c->y = way + wah - c->h - 2 * c->border;
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if(c->x < wax)
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c->x = wax;
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if(c->y < way)
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c->y = way;
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}
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updatesizehints(c);
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XSelectInput(dpy, c->win,
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StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
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XGetTransientForHint(dpy, c->win, &trans);
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grabbuttons(c, False);
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wc.border_width = c->border;
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XConfigureWindow(dpy, c->win, CWBorderWidth, &wc);
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XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
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configure(c); /* propagates border_width, if size doesn't change */
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updatetitle(c);
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t = getclient(trans);
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settags(c, t);
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if(!c->isfloat)
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c->isfloat = (t != 0) || c->isfixed;
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attach(c);
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attachstack(c);
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c->isbanned = True;
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XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
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XMapWindow(dpy, c->win);
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setclientstate(c, NormalState);
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if(isvisible(c))
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focus(c);
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arrange();
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}
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void
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resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
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float actual, dx, dy, max, min;
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XWindowChanges wc;
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if(w <= 0 || h <= 0)
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return;
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if(sizehints) {
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if(c->minw && w < c->minw)
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w = c->minw;
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if(c->minh && h < c->minh)
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h = c->minh;
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if(c->maxw && w > c->maxw)
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w = c->maxw;
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if(c->maxh && h > c->maxh)
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h = c->maxh;
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/* inspired by algorithm from fluxbox */
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if(c->minay > 0 && c->maxay && (h - c->baseh) > 0) {
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dx = (float)(w - c->basew);
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dy = (float)(h - c->baseh);
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min = (float)(c->minax) / (float)(c->minay);
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max = (float)(c->maxax) / (float)(c->maxay);
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actual = dx / dy;
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if(max > 0 && min > 0 && actual > 0) {
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if(actual < min) {
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dy = (dx * min + dy) / (min * min + 1);
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dx = dy * min;
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w = (int)dx + c->basew;
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h = (int)dy + c->baseh;
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}
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else if(actual > max) {
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dy = (dx * min + dy) / (max * max + 1);
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dx = dy * min;
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w = (int)dx + c->basew;
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h = (int)dy + c->baseh;
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}
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}
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}
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if(c->incw)
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w -= (w - c->basew) % c->incw;
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if(c->inch)
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h -= (h - c->baseh) % c->inch;
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}
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if(w == sw && h == sh)
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c->border = 0;
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else
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c->border = BORDERPX;
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/* offscreen appearance fixes */
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if(x > sw)
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x = sw - w - 2 * c->border;
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if(y > sh)
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y = sh - h - 2 * c->border;
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if(x + w + 2 * c->border < sx)
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x = sx;
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if(y + h + 2 * c->border < sy)
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y = sy;
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if(c->x != x || c->y != y || c->w != w || c->h != h) {
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c->x = wc.x = x;
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c->y = wc.y = y;
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c->w = wc.width = w;
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c->h = wc.height = h;
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wc.border_width = c->border;
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XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
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configure(c);
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XSync(dpy, False);
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}
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}
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void
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updatesizehints(Client *c) {
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long msize;
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XSizeHints size;
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if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
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size.flags = PSize;
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c->flags = size.flags;
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if(c->flags & PBaseSize) {
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c->basew = size.base_width;
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c->baseh = size.base_height;
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}
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else
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c->basew = c->baseh = 0;
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if(c->flags & PResizeInc) {
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c->incw = size.width_inc;
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c->inch = size.height_inc;
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}
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else
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c->incw = c->inch = 0;
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if(c->flags & PMaxSize) {
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c->maxw = size.max_width;
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c->maxh = size.max_height;
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}
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else
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c->maxw = c->maxh = 0;
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if(c->flags & PMinSize) {
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c->minw = size.min_width;
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c->minh = size.min_height;
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}
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else
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c->minw = c->minh = 0;
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if(c->flags & PAspect) {
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c->minax = size.min_aspect.x;
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c->minay = size.min_aspect.y;
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c->maxax = size.max_aspect.x;
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c->maxay = size.max_aspect.y;
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}
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else
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c->minax = c->minay = c->maxax = c->maxay = 0;
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c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
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&& c->maxw == c->minw && c->maxh == c->minh);
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}
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void
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updatetitle(Client *c) {
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char **list = NULL;
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int n;
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XTextProperty name;
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name.nitems = 0;
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c->name[0] = 0;
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XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
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if(!name.nitems)
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XGetWMName(dpy, c->win, &name);
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if(!name.nitems)
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return;
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if(name.encoding == XA_STRING)
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strncpy(c->name, (char *)name.value, sizeof c->name);
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else {
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if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
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&& n > 0 && *list)
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{
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strncpy(c->name, *list, sizeof c->name);
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XFreeStringList(list);
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}
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}
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XFree(name.value);
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}
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void
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unmanage(Client *c) {
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Client *nc;
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/* The server grab construct avoids race conditions. */
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XGrabServer(dpy);
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XSetErrorHandler(xerrordummy);
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detach(c);
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detachstack(c);
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if(sel == c) {
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for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
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focus(nc);
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}
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XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
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setclientstate(c, WithdrawnState);
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free(c->tags);
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free(c);
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XSync(dpy, False);
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XSetErrorHandler(xerror);
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XUngrabServer(dpy);
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arrange();
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}
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