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Java™ Binding for the OpenGL® API
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/**
* Copyright 2011 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package jogamp.nativewindow.windows;
import com.jogamp.nativewindow.util.Point;
import com.jogamp.nativewindow.NativeWindowException;
import com.jogamp.nativewindow.NativeWindowFactory;
import com.jogamp.common.ExceptionUtils;
import com.jogamp.common.os.Platform;
import com.jogamp.common.util.VersionNumber;
import jogamp.nativewindow.NWJNILibLoader;
import jogamp.nativewindow.Debug;
import jogamp.nativewindow.ToolkitProperties;
public class GDIUtil implements ToolkitProperties {
private static final boolean DEBUG = Debug.debug("GDIUtil");
private static final String dummyWindowClassNameBase = "_dummyWindow_clazz" ;
private static RegisteredClassFactory dummyWindowClassFactory;
private static volatile boolean isInit = false;
/**
* Called by {@link NativeWindowFactory#initSingleton()}
* @see ToolkitProperties
*/
public static synchronized void initSingleton() {
if(!isInit) {
synchronized(GDIUtil.class) {
if(!isInit) {
if(DEBUG) {
System.out.println("GDI.initSingleton()");
}
if(!NWJNILibLoader.loadNativeWindow("win32")) {
throw new NativeWindowException("NativeWindow Windows native library load error.");
}
if( !initIDs0() ) {
throw new NativeWindowException("GDI: Could not initialized native stub");
}
dummyWindowClassFactory = new RegisteredClassFactory(dummyWindowClassNameBase, getDummyWndProc0(),
true /* useDummyDispatchThread */,
0 /* iconSmallHandle */, 0 /* iconBigHandle */);
if(DEBUG) {
System.out.println("GDI.initSingleton() dummyWindowClassFactory "+dummyWindowClassFactory);
}
isInit = true;
}
}
}
}
/**
* Called by {@link NativeWindowFactory#shutdown()}
* @see ToolkitProperties
*/
public static void shutdown() {
}
/**
* Called by {@link NativeWindowFactory#initSingleton()}
* @see ToolkitProperties
*/
public static boolean requiresToolkitLock() { return false; }
/**
* Called by {@link NativeWindowFactory#initSingleton()}
* @see ToolkitProperties
*/
public static final boolean hasThreadingIssues() { return false; }
private static RegisteredClass dummyWindowClass = null;
private static Object dummyWindowSync = new Object();
public static long CreateDummyWindow(final int x, final int y, final int width, final int height) {
synchronized(dummyWindowSync) {
dummyWindowClass = dummyWindowClassFactory.getSharedClass();
if(DEBUG) {
System.out.println("GDI.CreateDummyWindow() dummyWindowClassFactory "+dummyWindowClassFactory);
System.out.println("GDI.CreateDummyWindow() dummyWindowClass "+dummyWindowClass);
}
return CreateDummyWindow0(dummyWindowClass.getHInstance(), dummyWindowClass.getName(), dummyWindowClass.getHDispThreadContext(), dummyWindowClass.getName(), x, y, width, height);
}
}
public static boolean DestroyDummyWindow(final long hwnd) {
boolean res;
synchronized(dummyWindowSync) {
if( null == dummyWindowClass ) {
throw new InternalError("GDI Error ("+dummyWindowClassFactory.getSharedRefCount()+"): SharedClass is null");
}
res = DestroyWindow0(dummyWindowClass.getHDispThreadContext(), hwnd);
dummyWindowClassFactory.releaseSharedClass();
}
return res;
}
public static Point GetRelativeLocation(final long src_win, final long dest_win, final int src_x, final int src_y) {
return (Point) GetRelativeLocation0(src_win, dest_win, src_x, src_y);
}
/**
* Windows >= 8, even if not manifested
* @see https://msdn.microsoft.com/en-us/library/windows/desktop/ms724832%28v=vs.85%29.aspx
*/
public static final VersionNumber Win8Version = new VersionNumber(6, 2, 0);
/**
* Windows >= 10, manifested
* @see https://msdn.microsoft.com/en-us/library/windows/desktop/ms724832%28v=vs.85%29.aspx
*/
public static final VersionNumber Win10Version = new VersionNumber(10, 0, 0);
/**
* Wrapper for {@link GDI#DwmIsCompositionEnabled()}
* taking the Windows 8 version into account.
*
* If Windows version >= {@link #Win8Version} method always returns {@code true},
* otherwise value of {@link GDI#DwmIsCompositionEnabled()} is returned.
*
* @see https://msdn.microsoft.com/en-us/library/windows/desktop/aa969518%28v=vs.85%29.aspx
*/
public static boolean DwmIsCompositionEnabled() {
final VersionNumber winVer = Platform.getOSVersionNumber();
if( winVer.compareTo(Win8Version) >= 0 ) {
return true;
} else {
return GDI.DwmIsCompositionEnabled();
}
}
public static boolean DwmSetupTranslucency(final long hwnd, final boolean enable) {
if( !GDI.DwmIsExtensionAvailable() ) {
if(DEBUG) {
System.err.println("GDIUtil.DwmSetupTranslucency on wnd 0x"+Long.toHexString(hwnd)+": enable "+enable+" -> failed, extension not available");
}
return !enable;
}
final VersionNumber winVer = Platform.getOSVersionNumber();
final boolean isWin8 = winVer.compareTo(Win8Version) >= 0;
if( !isWin8 && !GDI.DwmIsCompositionEnabled() ) {
if(DEBUG) {
System.err.println("GDIUtil.DwmSetupTranslucency on wnd 0x"+Long.toHexString(hwnd)+": enable "+enable+" -> failed, composition disabled");
}
return !enable;
}
final boolean hasWinCompEXT = GDI.IsWindowCompositionExtensionAvailable();
final boolean useWinCompEXT = isWin8 && hasWinCompEXT;
final boolean isUndecorated = IsUndecorated(hwnd);
boolean ok;
if( useWinCompEXT && !isUndecorated ) {
final AccentPolicy accentPolicy = AccentPolicy.create();
if( enable ) {
// For undecorated windows, this would also enable the Glass effect!
accentPolicy.setAccentState(GDI.ACCENT_ENABLE_BLURBEHIND);
} else {
accentPolicy.setAccentState(GDI.ACCENT_DISABLED);
}
ok = GDI.SetWindowCompositionAccentPolicy(hwnd, accentPolicy);
} else {
// Works even for >= Win8, if undecorated
final DWM_BLURBEHIND bb = DWM_BLURBEHIND.create();
final int dwFlags = enable ? GDI.DWM_BB_ENABLE | GDI.DWM_BB_BLURREGION | GDI.DWM_BB_TRANSITIONONMAXIMIZED : GDI.DWM_BB_ENABLE;
// final int dwFlags = GDI.DWM_BB_ENABLE;
bb.setDwFlags( dwFlags );
bb.setFEnable( enable ? 1 : 0 );
bb.setHRgnBlur(0);
bb.setFTransitionOnMaximized(1);
ok = GDI.DwmEnableBlurBehindWindow(hwnd, bb);
if( ok ) {
final MARGINS m = MARGINS.create();
m.setCxLeftWidth(-1);
m.setCxRightWidth(-1);
m.setCyBottomHeight(-1);
m.setCyTopHeight(-1);
ok = GDI.DwmExtendFrameIntoClientArea(hwnd, m);
}
}
/***
* Not required ..
*
if( ok && isWin8 && !isUndecorated ) {
final IntBuffer pvAttribute = Buffers.newDirectIntBuffer(1);
if( enable ) {
// Glass Effect even if undecorated, hence not truly 100% translucent!
pvAttribute.put(0, GDI.DWMNCRP_ENABLED);
} else {
pvAttribute.put(0, GDI.DWMNCRP_DISABLED);
}
final int err = GDI.DwmSetWindowAttribute(hwnd, GDI.DWMWA_NCRENDERING_POLICY,
pvAttribute,
Buffers.sizeOfBufferElem(pvAttribute)*pvAttribute.capacity());
ok = 0 == err; // S_OK
} */
if(DEBUG) {
final boolean isChild = IsChild(hwnd);
System.err.println("GDIUtil.DwmSetupTranslucency on wnd 0x"+Long.toHexString(hwnd)+": enable "+enable+", isUndecorated "+isUndecorated+", isChild "+isChild+
", version "+winVer+", isWin8 "+isWin8+", hasWinCompEXT "+hasWinCompEXT+", useWinCompEXT "+useWinCompEXT+" -> ok: "+ok);
}
return ok;
}
public static boolean IsUndecorated(final long win) {
return IsUndecorated0(win);
}
public static boolean IsChild(final long win) {
return IsChild0(win);
}
public static void SetProcessThreadsAffinityMask(final long affinityMask, final boolean verbose) {
SetProcessThreadsAffinityMask0(affinityMask, verbose);
}
private static final void dumpStack() { ExceptionUtils.dumpStack(System.err); } // Callback for JNI
/** Creates WNDCLASSEX instance */
static native boolean CreateWindowClass0(long hInstance, String clazzName, long wndProc, long iconSmallHandle, long iconBigHandle);
/** Destroys WNDCLASSEX instance */
static native boolean DestroyWindowClass0(long hInstance, String className, long dispThreadCtx);
static native long CreateDummyDispatchThread0();
private static native boolean initIDs0();
private static native long getDummyWndProc0();
private static native Object GetRelativeLocation0(long src_win, long dest_win, int src_x, int src_y);
private static native boolean IsChild0(long win);
private static native boolean IsUndecorated0(long win);
private static native void SetProcessThreadsAffinityMask0(long affinityMask, boolean verbose);
private static native long CreateDummyWindow0(long hInstance, String className, long dispThreadCtx, String windowName, int x, int y, int width, int height);
private static native boolean DestroyWindow0(long dispThreadCtx, long win);
}