/******************************************************************************
*                            recordMyDesktop                                  *
*******************************************************************************
*                                                                             *
*            Copyright (C) 2006,2007,2008 John Varouhakis                     *
*                                                                             *
*                                                                             *
*   This program is free software; you can redistribute it and/or modify      *
*   it under the terms of the GNU General Public License as published by      *
*   the Free Software Foundation; either version 2 of the License, or         *
*   (at your option) any later version.                                       *
*                                                                             *
*   This program is distributed in the hope that it will be useful,           *
*   but WITHOUT ANY WARRANTY; without even the implied warranty of            *
*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
*   GNU General Public License for more details.                              *
*                                                                             *
*   You should have received a copy of the GNU General Public License         *
*   along with this program; if not, write to the Free Software               *
*   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA  *
*                                                                             *
*                                                                             *
*                                                                             *
*   For further information contact me at johnvarouhakis@gmail.com            *
******************************************************************************/

#include "config.h"
#include "rmd_getzpixmap.h"

#include "rmd_types.h"


#include <X11/Xlib.h>
#include <X11/Xlibint.h>
#include <X11/extensions/shmproto.h>
#include <X11/extensions/XShm.h>



int rmdGetZPixmap(	Display *dpy,
			Window root,
			char *data,
			int x,
			int y,
			int width,
			int height) {

	xGetImageReply reply;
	xGetImageReq *request;
	long nbytes;

	LockDisplay(dpy);
	GetReq(GetImage, request);
	request->drawable = root;
	request->x = x;
	request->y = y;
	request->width = width;
	request->height = height;
	request->planeMask = AllPlanes;
	request->format = ZPixmap;

	if (!_XReply(dpy, (xReply *)&reply, 0, xFalse) || !reply.length) {
		UnlockDisplay(dpy);
		SyncHandle();

		return 1;
	}

	nbytes = (long)reply.length << 2;
	_XReadPad(dpy, data, nbytes);
	UnlockDisplay(dpy);
	SyncHandle();

	return 0;
}

int rmdGetZPixmapSHM(	Display *dpy,
			Window root,
			XShmSegmentInfo *shminfo,
			int shm_opcode,
			char *data,
			int x,
			int y,
			int width,
			int height) {

	xShmGetImageReply reply;
	xShmGetImageReq *request = NULL;
	long nbytes;

	LockDisplay(dpy);
	GetReq(ShmGetImage, request);

	request->reqType = shm_opcode;
	request->shmReqType = X_ShmGetImage;
	request->shmseg = shminfo->shmseg;

	request->drawable = root;
	request->x = x;
	request->y = y;
	request->width = width;
	request->height = height;
	request->planeMask = AllPlanes;
	request->format = ZPixmap;
	request->offset = data - shminfo->shmaddr;

	if ((!_XReply(dpy, (xReply *)&reply, 0, xFalse)) || !reply.length) {
		UnlockDisplay(dpy);
		SyncHandle();

		return 1;
	}

	nbytes = (long)reply.length << 2;
	_XReadPad(dpy, data, nbytes);
	UnlockDisplay(dpy);
	SyncHandle();

	return 0;
}