--- /dev/null 2016-03-01 11:05:33.030556044 +0530 +++ new/src/java.desktop/unix/native/common/awt/systemscale/systemScale.c 2016-03-01 13:48:39.774671921 +0530 @@ -0,0 +1,52 @@ +/* +* 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 + +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; +} +