--- /dev/null 2016-02-16 11:55:10.499659053 +0530 +++ new/src/java.desktop/windows/native/libsplashscreen/splashscreen_helper.cpp 2016-02-16 14:27:46.735855192 +0530 @@ -0,0 +1,80 @@ +/* +* Copyright (c) 2015, 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 +#include +#pragma comment(lib, "d2d1") +#include +#include +#ifndef MDT_EFFECTIVE_DPI +#define MDT_EFFECTIVE_DPI 0 +#endif + +float GetScreenDpi() +{ + float dpiX = -1.0f; + float dpiY = -1.0f; + if (IsWindows8OrGreater()) { + unsigned x = 0; + unsigned y = 0; + typedef HRESULT(WINAPI GetDpiForMonitorFunc)(HMONITOR, int, UINT*, UINT*); + static HMODULE sHCoreDll = NULL; + static GetDpiForMonitorFunc *lpGetDpiForMonitor = NULL; + + if (sHCoreDll == NULL) { + sHCoreDll = JDK_LoadSystemLibrary("shcore.dll"); + if (sHCoreDll != NULL) { + lpGetDpiForMonitor = (GetDpiForMonitorFunc*)GetProcAddress( + sHCoreDll, "GetDpiForMonitor"); + } + } + if (lpGetDpiForMonitor != NULL) { + HMONITOR hmon = getPrimaryMonitor(); + HRESULT hResult = lpGetDpiForMonitor(hmon, + MDT_EFFECTIVE_DPI, &x, &y); + if (hResult == S_OK) { + dpiX = static_cast(x); + dpiY = static_cast(y); + } + } + return dpiX; + } + else if (IsWindows7OrGreater()) { + ID2D1Factory* m_pDirect2dFactory; + HRESULT res = D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, + &m_pDirect2dFactory); + if (res == S_OK) { + m_pDirect2dFactory->GetDesktopDpi(&dpiX, &dpiY); + m_pDirect2dFactory->Release(); + } + return dpiX; + } + return 1.0; +} + +HMONITOR WINAPI getPrimaryMonitor() +{ + const POINT point = { 0, 0 }; + return MonitorFromPoint(point, MONITOR_DEFAULTTOPRIMARY); +} +