| /* |
| * Copyright (c) 1996, 2011, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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 "awt_Clipboard.h" |
| #include "awt_DataTransferer.h" |
| #include "awt_Toolkit.h" |
| #include <shlobj.h> |
| #include <sun_awt_windows_WClipboard.h> |
| |
| |
| /************************************************************************ |
| * AwtClipboard fields |
| */ |
| |
| jmethodID AwtClipboard::lostSelectionOwnershipMID; |
| jobject AwtClipboard::theCurrentClipboard; |
| |
| /* This flag is set while we call EmptyClipboard to indicate to |
| WM_DESTROYCLIPBOARD handler that we are not losing ownership */ |
| BOOL AwtClipboard::isGettingOwnership = FALSE; |
| |
| volatile jmethodID AwtClipboard::handleContentsChangedMID; |
| volatile BOOL AwtClipboard::skipInitialWmDrawClipboardMsg = TRUE; |
| volatile BOOL AwtClipboard::isClipboardViewerRegistered = FALSE; |
| volatile HWND AwtClipboard::hwndNextViewer = NULL; |
| |
| #define GALLOCFLG (GMEM_DDESHARE | GMEM_MOVEABLE | GMEM_ZEROINIT) |
| |
| /************************************************************************ |
| * AwtClipboard methods |
| */ |
| |
| void AwtClipboard::LostOwnership(JNIEnv *env) { |
| if (theCurrentClipboard != NULL) { |
| env->CallVoidMethod(theCurrentClipboard, lostSelectionOwnershipMID); |
| DASSERT(!safe_ExceptionOccurred(env)); |
| } |
| } |
| |
| void AwtClipboard::WmChangeCbChain(WPARAM wParam, LPARAM lParam) { |
| if ((HWND)wParam == hwndNextViewer) { |
| hwndNextViewer = (HWND)lParam; |
| } else if (hwndNextViewer != NULL) { |
| ::SendMessage(hwndNextViewer, WM_CHANGECBCHAIN, wParam, lParam); |
| } |
| } |
| |
| void AwtClipboard::WmDrawClipboard(JNIEnv *env, WPARAM wParam, LPARAM lParam) { |
| if (skipInitialWmDrawClipboardMsg) { |
| // skipping the first contents change notification as it comes |
| // immediately after registering the clipboard viewer window |
| // and it is not caused by an actual contents change. |
| skipInitialWmDrawClipboardMsg = FALSE; |
| return; |
| } |
| if (theCurrentClipboard != NULL) { |
| env->CallVoidMethod(theCurrentClipboard, handleContentsChangedMID); |
| DASSERT(!safe_ExceptionOccurred(env)); |
| } |
| ::SendMessage(hwndNextViewer, WM_DRAWCLIPBOARD, wParam, lParam); |
| } |
| |
| void AwtClipboard::RegisterClipboardViewer(JNIEnv *env, jobject jclipboard) { |
| if (isClipboardViewerRegistered) { |
| return; |
| } |
| |
| if (theCurrentClipboard == NULL) { |
| theCurrentClipboard = env->NewGlobalRef(jclipboard); |
| } |
| |
| jclass cls = env->GetObjectClass(jclipboard); |
| AwtClipboard::handleContentsChangedMID = |
| env->GetMethodID(cls, "handleContentsChanged", "()V"); |
| DASSERT(AwtClipboard::handleContentsChangedMID != NULL); |
| |
| hwndNextViewer = ::SetClipboardViewer(AwtToolkit::GetInstance().GetHWnd()); |
| isClipboardViewerRegistered = TRUE; |
| } |
| |
| void AwtClipboard::UnregisterClipboardViewer(JNIEnv *env) { |
| TRY; |
| |
| if (isClipboardViewerRegistered) { |
| ::ChangeClipboardChain(AwtToolkit::GetInstance().GetHWnd(), AwtClipboard::hwndNextViewer); |
| AwtClipboard::hwndNextViewer = NULL; |
| isClipboardViewerRegistered = FALSE; |
| skipInitialWmDrawClipboardMsg = TRUE; |
| } |
| |
| CATCH_BAD_ALLOC; |
| } |
| |
| extern "C" { |
| |
| void awt_clipboard_uninitialize(JNIEnv *env) { |
| AwtClipboard::UnregisterClipboardViewer(env); |
| env->DeleteGlobalRef(AwtClipboard::theCurrentClipboard); |
| AwtClipboard::theCurrentClipboard = NULL; |
| } |
| |
| /************************************************************************ |
| * WClipboard native methods |
| */ |
| |
| /* |
| * Class: sun_awt_windows_WClipboard |
| * Method: init |
| * Signature: ()V |
| */ |
| JNIEXPORT void JNICALL |
| Java_sun_awt_windows_WClipboard_init(JNIEnv *env, jclass cls) |
| { |
| TRY; |
| |
| AwtClipboard::lostSelectionOwnershipMID = |
| env->GetMethodID(cls, "lostSelectionOwnershipImpl", "()V"); |
| DASSERT(AwtClipboard::lostSelectionOwnershipMID != NULL); |
| |
| CATCH_BAD_ALLOC; |
| } |
| |
| /* |
| * Class: sun_awt_windows_WClipboard |
| * Method: openClipboard |
| * Signature: (Lsun/awt/windows/WClipboard;)V |
| */ |
| JNIEXPORT void JNICALL |
| Java_sun_awt_windows_WClipboard_openClipboard(JNIEnv *env, jobject self, |
| jobject newOwner) |
| { |
| TRY; |
| |
| DASSERT(::GetOpenClipboardWindow() != AwtToolkit::GetInstance().GetHWnd()); |
| |
| if (!::OpenClipboard(AwtToolkit::GetInstance().GetHWnd())) { |
| JNU_ThrowByName(env, "java/lang/IllegalStateException", |
| "cannot open system clipboard"); |
| return; |
| } |
| if (newOwner != NULL) { |
| AwtClipboard::GetOwnership(); |
| if (AwtClipboard::theCurrentClipboard != NULL) { |
| env->DeleteGlobalRef(AwtClipboard::theCurrentClipboard); |
| } |
| AwtClipboard::theCurrentClipboard = env->NewGlobalRef(newOwner); |
| } |
| |
| CATCH_BAD_ALLOC; |
| } |
| |
| /* |
| * Class: sun_awt_windows_WClipboard |
| * Method: closeClipboard |
| * Signature: ()V |
| */ |
| JNIEXPORT void JNICALL |
| Java_sun_awt_windows_WClipboard_closeClipboard(JNIEnv *env, jobject self) |
| { |
| TRY; |
| |
| if (::GetOpenClipboardWindow() == AwtToolkit::GetInstance().GetHWnd()) { |
| VERIFY(::CloseClipboard()); |
| } |
| |
| CATCH_BAD_ALLOC; |
| } |
| |
| /* |
| * Class: sun_awt_windows_WClipboard |
| * Method: registerClipboardViewer |
| * Signature: ()V |
| */ |
| JNIEXPORT void JNICALL |
| Java_sun_awt_windows_WClipboard_registerClipboardViewer(JNIEnv *env, jobject self) |
| { |
| TRY; |
| |
| AwtClipboard::RegisterClipboardViewer(env, self); |
| |
| CATCH_BAD_ALLOC; |
| } |
| |
| /* |
| * Class: sun_awt_windows_WClipboard |
| * Method: publishClipboardData |
| * Signature: (J[B)V |
| */ |
| JNIEXPORT void JNICALL |
| Java_sun_awt_windows_WClipboard_publishClipboardData(JNIEnv *env, |
| jobject self, |
| jlong format, |
| jbyteArray bytes) |
| { |
| TRY; |
| |
| DASSERT(::GetOpenClipboardWindow() == AwtToolkit::GetInstance().GetHWnd()); |
| |
| if (bytes == NULL) { |
| return; |
| } |
| |
| jint nBytes = env->GetArrayLength(bytes); |
| |
| if (format == CF_ENHMETAFILE) { |
| LPBYTE lpbEmfBuffer = |
| (LPBYTE)env->GetPrimitiveArrayCritical(bytes, NULL); |
| if (lpbEmfBuffer == NULL) { |
| env->PopLocalFrame(NULL); |
| throw std::bad_alloc(); |
| } |
| |
| HENHMETAFILE hemf = ::SetEnhMetaFileBits(nBytes, lpbEmfBuffer); |
| |
| env->ReleasePrimitiveArrayCritical(bytes, (LPVOID)lpbEmfBuffer, |
| JNI_ABORT); |
| |
| if (hemf != NULL) { |
| VERIFY(::SetClipboardData((UINT)format, hemf)); |
| } |
| return; |
| } else if (format == CF_METAFILEPICT) { |
| LPBYTE lpbMfpBuffer = |
| (LPBYTE)env->GetPrimitiveArrayCritical(bytes, NULL); |
| if (lpbMfpBuffer == NULL) { |
| env->PopLocalFrame(NULL); |
| throw std::bad_alloc(); |
| } |
| |
| HMETAFILE hmf = ::SetMetaFileBitsEx(nBytes - sizeof(METAFILEPICT), |
| lpbMfpBuffer + sizeof(METAFILEPICT)); |
| if (hmf == NULL) { |
| env->ReleasePrimitiveArrayCritical(bytes, (LPVOID)lpbMfpBuffer, JNI_ABORT); |
| env->PopLocalFrame(NULL); |
| return; |
| } |
| |
| LPMETAFILEPICT lpMfpOld = (LPMETAFILEPICT)lpbMfpBuffer; |
| |
| HMETAFILEPICT hmfp = ::GlobalAlloc(GALLOCFLG, sizeof(METAFILEPICT)); |
| if (hmfp == NULL) { |
| VERIFY(::DeleteMetaFile(hmf)); |
| env->ReleasePrimitiveArrayCritical(bytes, (LPVOID)lpbMfpBuffer, JNI_ABORT); |
| env->PopLocalFrame(NULL); |
| throw std::bad_alloc(); |
| } |
| |
| LPMETAFILEPICT lpMfp = (LPMETAFILEPICT)::GlobalLock(hmfp); |
| lpMfp->mm = lpMfpOld->mm; |
| lpMfp->xExt = lpMfpOld->xExt; |
| lpMfp->yExt = lpMfpOld->yExt; |
| lpMfp->hMF = hmf; |
| ::GlobalUnlock(hmfp); |
| |
| env->ReleasePrimitiveArrayCritical(bytes, (LPVOID)lpbMfpBuffer, JNI_ABORT); |
| |
| VERIFY(::SetClipboardData((UINT)format, hmfp)); |
| |
| return; |
| } |
| |
| // We have to prepend the DROPFILES structure here because WDataTransferer |
| // doesn't. |
| HGLOBAL hglobal = ::GlobalAlloc(GALLOCFLG, nBytes + ((format == CF_HDROP) |
| ? sizeof(DROPFILES) |
| : 0)); |
| if (hglobal == NULL) { |
| throw std::bad_alloc(); |
| } |
| char *dataout = (char *)::GlobalLock(hglobal); |
| |
| if (format == CF_HDROP) { |
| DROPFILES *dropfiles = (DROPFILES *)dataout; |
| dropfiles->pFiles = sizeof(DROPFILES); |
| dropfiles->fWide = TRUE; // we publish only Unicode |
| dataout += sizeof(DROPFILES); |
| } |
| |
| env->GetByteArrayRegion(bytes, 0, nBytes, (jbyte *)dataout); |
| ::GlobalUnlock(hglobal); |
| |
| VERIFY(::SetClipboardData((UINT)format, hglobal)); |
| |
| CATCH_BAD_ALLOC; |
| } |
| |
| /* |
| * Class: sun_awt_windows_WClipboard |
| * Method: getClipboardFormats |
| * Signature: ()[J |
| */ |
| JNIEXPORT jlongArray JNICALL |
| Java_sun_awt_windows_WClipboard_getClipboardFormats |
| (JNIEnv *env, jobject self) |
| { |
| TRY; |
| |
| DASSERT(::GetOpenClipboardWindow() == AwtToolkit::GetInstance().GetHWnd()); |
| |
| jsize nFormats = ::CountClipboardFormats(); |
| jlongArray formats = env->NewLongArray(nFormats); |
| if (formats == NULL) { |
| throw std::bad_alloc(); |
| } |
| if (nFormats == 0) { |
| return formats; |
| } |
| jboolean isCopy; |
| jlong *lFormats = env->GetLongArrayElements(formats, &isCopy), |
| *saveFormats = lFormats; |
| UINT num = 0; |
| |
| for (jsize i = 0; i < nFormats; i++, lFormats++) { |
| *lFormats = num = ::EnumClipboardFormats(num); |
| } |
| |
| env->ReleaseLongArrayElements(formats, saveFormats, 0); |
| |
| return formats; |
| |
| CATCH_BAD_ALLOC_RET(NULL); |
| } |
| |
| /* |
| * Class: sun_awt_windows_WClipboard |
| * Method: getClipboardData |
| * Signature: (J)[B |
| */ |
| JNIEXPORT jbyteArray JNICALL |
| Java_sun_awt_windows_WClipboard_getClipboardData |
| (JNIEnv *env, jobject self, jlong format) |
| { |
| TRY; |
| |
| DASSERT(::GetOpenClipboardWindow() == AwtToolkit::GetInstance().GetHWnd()); |
| |
| HANDLE handle = ::GetClipboardData((UINT)format); |
| if (handle == NULL) { |
| JNU_ThrowIOException(env, "system clipboard data unavailable"); |
| return NULL; |
| } |
| |
| jbyteArray bytes = NULL; |
| jbyteArray paletteData = NULL; |
| |
| switch (format) { |
| case CF_ENHMETAFILE: |
| case CF_METAFILEPICT: { |
| HENHMETAFILE hemf = NULL; |
| |
| if (format == CF_METAFILEPICT) { |
| HMETAFILEPICT hMetaFilePict = (HMETAFILEPICT)handle; |
| LPMETAFILEPICT lpMetaFilePict = |
| (LPMETAFILEPICT)::GlobalLock(hMetaFilePict); |
| UINT uSize = ::GetMetaFileBitsEx(lpMetaFilePict->hMF, 0, NULL); |
| DASSERT(uSize != 0); |
| |
| try { |
| LPBYTE lpMfBits = (LPBYTE)safe_Malloc(uSize); |
| VERIFY(::GetMetaFileBitsEx(lpMetaFilePict->hMF, uSize, |
| lpMfBits) == uSize); |
| hemf = ::SetWinMetaFileBits(uSize, lpMfBits, NULL, |
| lpMetaFilePict); |
| free(lpMfBits); |
| if (hemf == NULL) { |
| ::GlobalUnlock(hMetaFilePict); |
| JNU_ThrowIOException(env, "failed to get system clipboard data"); |
| return NULL; |
| } |
| } catch (...) { |
| ::GlobalUnlock(hMetaFilePict); |
| throw; |
| } |
| ::GlobalUnlock(hMetaFilePict); |
| } else { |
| hemf = (HENHMETAFILE)handle; |
| } |
| |
| UINT uEmfSize = ::GetEnhMetaFileBits(hemf, 0, NULL); |
| if (uEmfSize == 0) { |
| JNU_ThrowIOException(env, "cannot retrieve metafile bits"); |
| return NULL; |
| } |
| |
| bytes = env->NewByteArray(uEmfSize); |
| if (bytes == NULL) { |
| throw std::bad_alloc(); |
| } |
| |
| LPBYTE lpbEmfBuffer = |
| (LPBYTE)env->GetPrimitiveArrayCritical(bytes, NULL); |
| if (lpbEmfBuffer == NULL) { |
| env->DeleteLocalRef(bytes); |
| throw std::bad_alloc(); |
| } |
| VERIFY(::GetEnhMetaFileBits(hemf, uEmfSize, lpbEmfBuffer) == uEmfSize); |
| env->ReleasePrimitiveArrayCritical(bytes, lpbEmfBuffer, 0); |
| |
| paletteData = |
| AwtDataTransferer::GetPaletteBytes(hemf, OBJ_ENHMETAFILE, FALSE); |
| break; |
| } |
| case CF_LOCALE: { |
| LCID *lcid = (LCID *)::GlobalLock(handle); |
| if (lcid == NULL) { |
| JNU_ThrowIOException(env, "invalid LCID"); |
| return NULL; |
| } |
| try { |
| bytes = AwtDataTransferer::LCIDToTextEncoding(env, *lcid); |
| } catch (...) { |
| ::GlobalUnlock(handle); |
| throw; |
| } |
| ::GlobalUnlock(handle); |
| break; |
| } |
| default: { |
| ::SetLastError(0); // clear error |
| // Warning C4244. |
| // Cast SIZE_T (__int64 on 64-bit/unsigned int on 32-bit) |
| // to jsize (long). |
| SIZE_T globalSize = ::GlobalSize(handle); |
| jsize size = (globalSize <= INT_MAX) ? (jsize)globalSize : INT_MAX; |
| if (::GetLastError() != 0) { |
| JNU_ThrowIOException(env, "invalid global memory block handle"); |
| return NULL; |
| } |
| |
| bytes = env->NewByteArray(size); |
| if (bytes == NULL) { |
| throw std::bad_alloc(); |
| } |
| |
| if (size != 0) { |
| LPVOID data = ::GlobalLock(handle); |
| env->SetByteArrayRegion(bytes, 0, size, (jbyte *)data); |
| ::GlobalUnlock(handle); |
| } |
| break; |
| } |
| } |
| |
| switch (format) { |
| case CF_ENHMETAFILE: |
| case CF_METAFILEPICT: |
| case CF_DIB: { |
| if (JNU_IsNull(env, paletteData)) { |
| HPALETTE hPalette = (HPALETTE)::GetClipboardData(CF_PALETTE); |
| paletteData = |
| AwtDataTransferer::GetPaletteBytes(hPalette, OBJ_PAL, TRUE); |
| } |
| DASSERT(!JNU_IsNull(env, paletteData) && |
| !JNU_IsNull(env, bytes)); |
| |
| jbyteArray concat = |
| (jbyteArray)AwtDataTransferer::ConcatData(env, paletteData, bytes); |
| |
| if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) { |
| env->ExceptionDescribe(); |
| env->ExceptionClear(); |
| env->DeleteLocalRef(bytes); |
| env->DeleteLocalRef(paletteData); |
| return NULL; |
| } |
| |
| env->DeleteLocalRef(bytes); |
| env->DeleteLocalRef(paletteData); |
| bytes = concat; |
| break; |
| } |
| } |
| |
| return bytes; |
| |
| CATCH_BAD_ALLOC_RET(NULL); |
| } |
| |
| } /* extern "C" */ |