client.c
author Anselm R. Garbe <garbeam@wmii.de>
Tue, 11 Jul 2006 13:02:22 +0200
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/*
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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.
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 */
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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 "util.h"
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#include "wm.h"
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static void
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update_client_name(Client *c)
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{
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	XTextProperty name;
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	int n;
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	char **list = NULL;
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	name.nitems = 0;
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	c->name[0] = 0;
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	XGetTextProperty(dpy, c->win, &name, net_atom[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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manage(Window w, XWindowAttributes *wa)
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{
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	Client *c, **l;
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	XSetWindowAttributes twa;
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	long msize;
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	c = emallocz(sizeof(Client));
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	c->win = w;
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	c->r[RFloat].x = wa->x;
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	c->r[RFloat].y = wa->y;
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	c->r[RFloat].width = wa->width;
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	c->r[RFloat].height = wa->height;
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	c->border = wa->border_width;
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	XSetWindowBorderWidth(dpy, c->win, 0);
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	XGetTransientForHint(dpy, c->win, &c->trans);
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	if(!XGetWMNormalHints(dpy, c->win, &c->size, &msize) || !c->size.flags)
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		c->size.flags = PSize;
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	c->fixedsize =
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		(c->size.flags & PMinSize && c->size.flags & PMaxSize
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		 && c->size.min_width == c->size.max_width
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		 && c->size.min_height == c->size.max_height);
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	update_client_name(c);
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	twa.override_redirect = 1;
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	twa.background_pixmap = ParentRelative;
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	twa.event_mask = ExposureMask;
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	c->title = XCreateWindow(dpy, root, c->r[RFloat].x, c->r[RFloat].y,
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			c->r[RFloat].width, barrect.height, 0,
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			DefaultDepth(dpy, screen), CopyFromParent,
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			DefaultVisual(dpy, screen),
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			CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
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	for(l=&clients; *l; l=&(*l)->next);
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	c->next = *l; /* *l == nil */
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	*l = c;
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	XMapRaised(dpy, c->win);
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	XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
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	XFlush(dpy);
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}
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static int
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dummy_error_handler(Display *dpy, XErrorEvent *error)
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{
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	return 0;
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}
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void
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unmanage(Client *c)
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{
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	Client **l;
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	XGrabServer(dpy);
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	XSetErrorHandler(dummy_error_handler);
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	XUnmapWindow(dpy, c->win);
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	XDestroyWindow(dpy, c->title);
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	for(l=&clients; *l && *l != c; l=&(*l)->next);
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	eassert(*l == c);
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	*l = c->next;
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	free(c);
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	XFlush(dpy);
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	XSetErrorHandler(error_handler);
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	XUngrabServer(dpy);
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	/*flush_masked_events(EnterWindowMask); ? */
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}
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Client *
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getclient(Window w)
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{
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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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}