/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the QtGui module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the Technology Preview License Agreement accompanying ** this package. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain additional ** rights. These rights are described in the Nokia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** ** ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "qclipboard.h" #ifndef QT_NO_CLIPBOARD #include "qapplication.h" #include "qapplication_p.h" #include "qeventloop.h" #include "qwidget.h" #include "qevent.h" #include "qmime.h" #include "qt_windows.h" #include "qdnd_p.h" QT_BEGIN_NAMESPACE #if defined(Q_OS_WINCE) QT_BEGIN_INCLUDE_NAMESPACE #include "qguifunctions_wince.h" QT_END_INCLUDE_NAMESPACE HRESULT QtCeGetClipboard(IDataObject** obj); HRESULT QtCeSetClipboard(IDataObject* obj); void QtCeFlushClipboard(); #define OleGetClipboard QtCeGetClipboard #define OleSetClipboard QtCeSetClipboard #define OleFlushClipboard QtCeFlushClipboard #endif class QClipboardWatcher : public QInternalMimeData { public: QClipboardWatcher() : QInternalMimeData() { } bool hasFormat_sys(const QString &mimetype) const; QStringList formats_sys() const; QVariant retrieveData_sys(const QString &mimetype, QVariant::Type preferredType) const; }; bool QClipboardWatcher::hasFormat_sys(const QString &mime) const { IDataObject * pDataObj = 0; if (OleGetClipboard(&pDataObj) != S_OK && !pDataObj) // Sanity return false; bool has = QWindowsMime::converterToMime(mime, pDataObj) != 0; pDataObj->Release(); return has; } QStringList QClipboardWatcher::formats_sys() const { QStringList fmts; IDataObject * pDataObj = 0; if (OleGetClipboard(&pDataObj) != S_OK && !pDataObj) // Sanity return QStringList(); fmts = QWindowsMime::allMimesForFormats(pDataObj); pDataObj->Release(); return fmts; } QVariant QClipboardWatcher::retrieveData_sys(const QString &mimeType, QVariant::Type type) const { QVariant result; IDataObject * pDataObj = 0; if (OleGetClipboard(&pDataObj) != S_OK && !pDataObj) // Sanity return result; QWindowsMime *converter = QWindowsMime::converterToMime(mimeType, pDataObj); if (converter) result = converter->convertToMime(mimeType, pDataObj, type); pDataObj->Release(); return result; } class QClipboardData { public: QClipboardData() : iData(0) , nextClipboardViewer(0) { clipBoardViewer = new QWidget(); clipBoardViewer->createWinId(); clipBoardViewer->setObjectName(QLatin1String("internal clipboard owner")); } ~QClipboardData() { Q_ASSERT(clipBoardViewer->testAttribute(Qt::WA_WState_Created)); ChangeClipboardChain(clipBoardViewer->internalWinId(), nextClipboardViewer); delete clipBoardViewer; releaseIData(); } void releaseIData() { if (iData) { delete iData->mimeData(); iData->releaseQt(); iData->Release(); iData = 0; } } QOleDataObject * iData; QWidget *clipBoardViewer; HWND nextClipboardViewer; QClipboardWatcher watcher; }; static QClipboardData *ptrClipboardData = 0; static QClipboardData *clipboardData() { if (ptrClipboardData == 0) { ptrClipboardData = new QClipboardData; // this needs to be done here to avoid recursion Q_ASSERT(ptrClipboardData->clipBoardViewer->testAttribute(Qt::WA_WState_Created)); ptrClipboardData->nextClipboardViewer = SetClipboardViewer(ptrClipboardData->clipBoardViewer->internalWinId()); } return ptrClipboardData; } static void cleanupClipboardData() { delete ptrClipboardData; ptrClipboardData = 0; } #if defined(Q_OS_WINCE) HRESULT QtCeGetClipboard(IDataObject** obj) { HWND owner = ptrClipboardData->clipBoardViewer->internalWinId(); if (!OpenClipboard(owner)) return !S_OK; if (!IsClipboardFormatAvailable(CF_TEXT) && !IsClipboardFormatAvailable(CF_UNICODETEXT)) return !S_OK; HANDLE clipData = GetClipboardData(CF_TEXT); QString clipText; if (clipData == 0) { clipData = GetClipboardData(CF_UNICODETEXT); if (clipData != 0) clipText = QString::fromUtf16((unsigned short *)clipData); } else { clipText = QString::fromLatin1((const char*)clipData); } QMimeData *mimeData = new QMimeData(); mimeData->setText(clipText); QOleDataObject* data = new QOleDataObject(mimeData); *obj = data; CloseClipboard(); return S_OK; } HRESULT QtCeSetClipboard(IDataObject* obj) { HWND owner = ptrClipboardData->clipBoardViewer->internalWinId(); if (!OpenClipboard(owner)) return !S_OK; bool result = false; if (obj == 0) { result = true; EmptyClipboard(); CloseClipboard(); } else { QOleDataObject* qobj = static_cast(obj); const QMimeData* data = qobj->mimeData(); if (data->hasText()) { EmptyClipboard(); result = SetClipboardData(CF_UNICODETEXT, wcsdup(reinterpret_cast (data->text().utf16()))) != NULL; CloseClipboard(); result = true; } } return result ? S_OK : !S_OK; } void QtCeFlushClipboard() { } #endif QClipboard::~QClipboard() { cleanupClipboardData(); } void QClipboard::setMimeData(QMimeData *src, Mode mode) { if (mode != Clipboard) return; QClipboardData *d = clipboardData(); if (!(d->iData && d->iData->mimeData() == src)) { d->releaseIData(); d->iData = new QOleDataObject(src); } if (OleSetClipboard(d->iData) != S_OK) { d->releaseIData(); qErrnoWarning("QClipboard::setMimeData: Failed to set data on clipboard"); return; } #if defined(Q_OS_WINCE) // As WinCE does not support notifications we send the signal here // We will get no event when the clipboard changes outside... emit dataChanged(); emit changed(Clipboard); #endif } void QClipboard::clear(Mode mode) { if (mode != Clipboard) return; QClipboardData *d = clipboardData(); d->releaseIData(); if (OleSetClipboard(0) != S_OK) { qErrnoWarning("QClipboard::clear: Failed to clear data on clipboard"); return; } #if defined(Q_OS_WINCE) // As WinCE does not support notifications we send the signal here // We will get no event when the clipboard changes outside... emit dataChanged(); emit changed(Clipboard); #endif } bool QClipboard::event(QEvent *e) { if (e->type() != QEvent::Clipboard) return QObject::event(e); QClipboardData *d = clipboardData(); MSG *m = (MSG *)((QClipboardEvent*)e)->data(); if (!m) { // this is sent to render all formats at app shut down if (ownsClipboard()) { OleFlushClipboard(); d->releaseIData(); } return true; } bool propagate = false; if (m->message == WM_CHANGECBCHAIN) { if ((HWND)m->wParam == d->nextClipboardViewer) d->nextClipboardViewer = (HWND)m->lParam; else propagate = true; } else if (m->message == WM_DRAWCLIPBOARD) { emitChanged(QClipboard::Clipboard); if (!ownsClipboard() && d->iData) // clean up the clipboard object if we no longer own the clipboard d->releaseIData(); propagate = true; } if (propagate && d->nextClipboardViewer) { QT_WA({ SendMessage(d->nextClipboardViewer, m->message, m->wParam, m->lParam); } , { SendMessageA(d->nextClipboardViewer, m->message, m->wParam, m->lParam); }); } return true; } void QClipboard::connectNotify(const char *signal) { if (qstrcmp(signal,SIGNAL(dataChanged())) == 0) { // ensure we are up and running but block signals so the dataChange signal // is not emitted while being connected to. bool blocked = blockSignals(true); QClipboardData *d = clipboardData(); blockSignals(blocked); Q_UNUSED(d); } } const QMimeData *QClipboard::mimeData(Mode mode) const { if (mode != Clipboard) return 0; QClipboardData *data = clipboardData(); // sort cut for local copy / paste if (ownsClipboard() && data->iData->mimeData()) return data->iData->mimeData(); return &data->watcher; } bool QClipboard::supportsMode(Mode mode) const { return (mode == Clipboard); } bool QClipboard::ownsMode(Mode mode) const { if (mode == Clipboard) { QClipboardData *d = clipboardData(); #if !defined(Q_OS_WINCE) return d->iData && OleIsCurrentClipboard(d->iData) == S_OK; #else return d->iData && GetClipboardOwner() == d->clipBoardViewer->internalWinId(); #endif } else { return false; } } void QClipboard::ownerDestroyed() { } QT_END_NAMESPACE #endif // QT_NO_CLIPBOARD