/*

* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.

* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

*

* This code is free software; you can redistribute it and/or modify it

* under the terms of the GNU General Public License version 2 only, as

* published by the Free Software Foundation.

*

* This code 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

* version 2 for more details (a copy is included in the LICENSE file that

* accompanied this code).

*

* You should have received a copy of the GNU General Public License version

* 2 along with this work; if not, write to the Free Software Foundation,

* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

*

* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

* or visit www.oracle.com if you need additional information or have any

* questions.

*/

#include "systemScale.h"

#include <stdlib.h>

int getNativeScaleFactor() {

    static int scale = -2.0;

    if (scale == -2) {

        scale = getScale("J2D_UISCALE");

    }

    if (scale >= 1) {

        return (int) scale;

    }

    return getScale("GDK_SCALE");

}

int getScale(const char *name) {

    char *uiScale = getenv(name);

    if (uiScale != NULL) {

        double scale = strtod(uiScale, NULL);

        if (scale < 1) {

            return -1;

        }

        return (int) scale;

    }

    return -1;

}