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/*
 * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <X11/Xlib.h>
#include <X11/Xatom.h>

#include "create_window.h"

#define FATAL_ERROR(msg) \
    do { \
        printf("Fatal Error: %s\n",msg); \
        printf("failed at %s:%d\n", __FILE__,__LINE__); \
        exit(1); \
    } while (0)

static Display *dpy = NULL;
static Window   win = 0;

EGLNativeWindowType CreateWindow(int width, int height, const char *name)
{
	XEvent   evt;
	int      scr;

	if (dpy != NULL || win != 0) {
		FATAL_ERROR("only one window supported");
	}

	dpy = XOpenDisplay(NULL);
	if (dpy == NULL) {
		FATAL_ERROR("XOpenDisplay");
	}

	scr = DefaultScreen(dpy);
	win = XCreateSimpleWindow(dpy, RootWindow(dpy, scr),
	                          0, 0, width, height, 1,
	                          BlackPixel(dpy, scr), WhitePixel(dpy, scr));
	if (!win) {
		FATAL_ERROR("XCreateSimpleWindow");
	}

	XChangeProperty(dpy, win, XA_WM_NAME, XA_STRING,
	                8, PropModeReplace, name, name ? strlen(name) : 0);

	XSelectInput(dpy, win, KeyPressMask | ExposureMask);

	XMapWindow(dpy, win);
	XSync(dpy, False);

	return win;
}

void DestroyWindow(EGLNativeWindowType w)
{
	if ((Window)w != win) {
		FATAL_ERROR(__FUNCTION__);
	}

	XDestroyWindow(dpy, win);
}