/* $XConsortium: XGetWAttrs.c,v 11.25 92/10/19 18:50:14 rws Exp $ */
/* Copyright    Massachusetts Institute of Technology    1986	*/

/*
Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation, and that the name of M.I.T. not be used in advertising or
publicity pertaining to distribution of the software without specific,
written prior permission.  M.I.T. makes no representations about the
suitability of this software for any purpose.  It is provided "as is"
without express or implied warranty.
*/

#define NEED_REPLIES
#include "Xlibint.h"

typedef struct _WAttrsState {
    unsigned long attr_seq;
    unsigned long geom_seq;
    XWindowAttributes *attr;
} _XWAttrsState;

static Bool
_XWAttrsHandler(dpy, rep, buf, len, data)
    register Display *dpy;
    register xReply *rep;
    char *buf;
    int len;
    XPointer data;
{
    register _XWAttrsState *state;
    xGetWindowAttributesReply replbuf;
    register xGetWindowAttributesReply *repl;
    register XWindowAttributes *attr;

    state = (_XWAttrsState *)data;
    if (dpy->last_request_read != state->attr_seq) {
	if (dpy->last_request_read == state->geom_seq &&
	    !state->attr &&
	    rep->generic.type == X_Error &&
	    rep->error.errorCode == BadDrawable)
	    return True;
	return False;
    }
    if (rep->generic.type == X_Error) {
	state->attr = (XWindowAttributes *)NULL;
	return False;
    }
    repl = (xGetWindowAttributesReply *)
	_XGetAsyncReply(dpy, (char *)&replbuf, rep, buf, len,
		     (SIZEOF(xGetWindowAttributesReply) - SIZEOF(xReply)) >> 2,
			True);
    attr = state->attr;
    attr->class = repl->class;
    attr->bit_gravity = repl->bitGravity;
    attr->win_gravity = repl->winGravity;
    attr->backing_store = repl->backingStore;
    attr->backing_planes = repl->backingBitPlanes;
    attr->backing_pixel = repl->backingPixel;
    attr->save_under = repl->saveUnder;
    attr->colormap = repl->colormap;
    attr->map_installed = repl->mapInstalled;
    attr->map_state = repl->mapState;
    attr->all_event_masks = repl->allEventMasks;
    attr->your_event_mask = repl->yourEventMask;
    attr->do_not_propagate_mask = repl->doNotPropagateMask;
    attr->override_redirect = repl->override;
    attr->visual = _XVIDtoVisual (dpy, repl->visualID);
    return True;
}

Status XGetWindowAttributes(dpy, w, attr)
     register Display *dpy;
     Window w;
     XWindowAttributes *attr;
{       
    xGetGeometryReply rep;
    register xResourceReq *req;
    register int i;
    register Screen *sp;
    _XAsyncHandler async;
    _XWAttrsState async_state;
 
    LockDisplay(dpy);
    GetResReq(GetWindowAttributes, w, req);

    async_state.attr_seq = dpy->request;
    async_state.geom_seq = 0;
    async_state.attr = attr;
    async.next = dpy->async_handlers;
    async.handler = _XWAttrsHandler;
    async.data = (XPointer)&async_state;
    dpy->async_handlers = &async;

    GetResReq(GetGeometry, w, req);

    async_state.geom_seq = dpy->request;

    if (!_XReply (dpy, (xReply *)&rep, 0, xTrue)) {
	DeqAsyncHandler(dpy, &async);
	UnlockDisplay(dpy);
	SyncHandle();
	return (0);
	}
    DeqAsyncHandler(dpy, &async);
    if (!async_state.attr) {
	UnlockDisplay(dpy);
	SyncHandle();
	return (0);
    }
    attr->x = cvtINT16toInt (rep.x);
    attr->y = cvtINT16toInt (rep.y);
    attr->width = rep.width;
    attr->height = rep.height;
    attr->border_width = rep.borderWidth;
    attr->depth = rep.depth;
    attr->root = rep.root;
    /* find correct screen so that applications find it easier.... */
    for (i = 0; i < dpy->nscreens; i++) {
	sp = &dpy->screens[i];
	if (sp->root == attr->root) {
	    attr->screen = sp;
	    break;
	}
    }
    UnlockDisplay(dpy);
    SyncHandle();
    return(1);
}