--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/kernel/qdnd_win.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,1031 @@
+/****************************************************************************
+**
+** 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 "qapplication.h"
+
+#include "qapplication_p.h"
+#include "qevent.h"
+#include "qpainter.h"
+#include "qwidget.h"
+#include "qbuffer.h"
+#include "qdatastream.h"
+#include "qcursor.h"
+#include "qt_windows.h"
+#include <shlobj.h>
+#ifndef QT_NO_ACCESSIBILITY
+#include "qaccessible.h"
+#endif
+#include "qdnd_p.h"
+#include "qdebug.h"
+
+#if defined(Q_OS_WINCE)
+#include "qguifunctions_wince.h"
+#endif
+
+// support for xbuttons
+#ifndef MK_XBUTTON1
+#define MK_XBUTTON1 0x0020
+#define MK_XBUTTON2 0x0040
+#endif
+
+QT_BEGIN_NAMESPACE
+
+#if !(defined(QT_NO_DRAGANDDROP) && defined(QT_NO_CLIPBOARD))
+
+//---------------------------------------------------------------------
+// QOleDataObject Constructor
+//---------------------------------------------------------------------
+
+QOleDataObject::QOleDataObject(QMimeData *mimeData)
+{
+ m_refs = 1;
+ data = mimeData;
+ CF_PERFORMEDDROPEFFECT = RegisterClipboardFormat(CFSTR_PERFORMEDDROPEFFECT);
+ performedEffect = DROPEFFECT_NONE;
+}
+
+QOleDataObject::~QOleDataObject()
+{
+}
+
+void QOleDataObject::releaseQt()
+{
+ data = 0;
+}
+
+const QMimeData *QOleDataObject::mimeData() const
+{
+ return data;
+}
+
+DWORD QOleDataObject::reportedPerformedEffect() const
+{
+ return performedEffect;
+}
+
+//---------------------------------------------------------------------
+// IUnknown Methods
+//---------------------------------------------------------------------
+
+STDMETHODIMP
+QOleDataObject::QueryInterface(REFIID iid, void FAR* FAR* ppv)
+{
+ if (iid == IID_IUnknown || iid == IID_IDataObject) {
+ *ppv = this;
+ AddRef();
+ return NOERROR;
+ }
+ *ppv = NULL;
+ return ResultFromScode(E_NOINTERFACE);
+}
+
+STDMETHODIMP_(ULONG)
+QOleDataObject::AddRef(void)
+{
+ return ++m_refs;
+}
+
+STDMETHODIMP_(ULONG)
+QOleDataObject::Release(void)
+{
+ if (--m_refs == 0) {
+ releaseQt();
+ delete this;
+ return 0;
+ }
+ return m_refs;
+}
+
+//---------------------------------------------------------------------
+// IDataObject Methods
+//
+// The following methods are NOT supported for data transfer using the
+// clipboard or drag-drop:
+//
+// IDataObject::SetData -- return E_NOTIMPL
+// IDataObject::DAdvise -- return OLE_E_ADVISENOTSUPPORTED
+// ::DUnadvise
+// ::EnumDAdvise
+// IDataObject::GetCanonicalFormatEtc -- return E_NOTIMPL
+// (NOTE: must set pformatetcOut->ptd = NULL)
+//---------------------------------------------------------------------
+
+STDMETHODIMP
+QOleDataObject::GetData(LPFORMATETC pformatetc, LPSTGMEDIUM pmedium)
+{
+#ifdef QDND_DEBUG
+ qDebug("QOleDataObject::GetData(LPFORMATETC pformatetc, LPSTGMEDIUM pmedium)");
+#ifndef Q_OS_WINCE
+ wchar_t buf[256] = {0};
+ GetClipboardFormatName(pformatetc->cfFormat, buf, 255);
+ qDebug("CF = %d : %s", pformatetc->cfFormat, QString::fromWCharArray(buf));
+#endif
+#endif
+
+ if (!data)
+ return ResultFromScode(DATA_E_FORMATETC);
+
+ QWindowsMime *converter = QWindowsMime::converterFromMime(*pformatetc, data);
+
+ if (converter && converter->convertFromMime(*pformatetc, data, pmedium))
+ return ResultFromScode(S_OK);
+ else
+ return ResultFromScode(DATA_E_FORMATETC);
+}
+
+STDMETHODIMP
+QOleDataObject::GetDataHere(LPFORMATETC, LPSTGMEDIUM)
+{
+ return ResultFromScode(DATA_E_FORMATETC);
+}
+
+STDMETHODIMP
+QOleDataObject::QueryGetData(LPFORMATETC pformatetc)
+{
+#ifdef QDND_DEBUG
+ qDebug("QOleDataObject::QueryGetData(LPFORMATETC pformatetc)");
+#endif
+
+ if (!data)
+ return ResultFromScode(DATA_E_FORMATETC);
+
+ if (QWindowsMime::converterFromMime(*pformatetc, data))
+ return ResultFromScode(S_OK);
+ return ResultFromScode(S_FALSE);
+}
+
+STDMETHODIMP
+QOleDataObject::GetCanonicalFormatEtc(LPFORMATETC, LPFORMATETC pformatetcOut)
+{
+ pformatetcOut->ptd = NULL;
+ return ResultFromScode(E_NOTIMPL);
+}
+
+STDMETHODIMP
+QOleDataObject::SetData(LPFORMATETC pFormatetc, STGMEDIUM *pMedium, BOOL fRelease)
+{
+ if (pFormatetc->cfFormat == CF_PERFORMEDDROPEFFECT && pMedium->tymed == TYMED_HGLOBAL) {
+ DWORD * val = (DWORD*)GlobalLock(pMedium->hGlobal);
+ performedEffect = *val;
+ GlobalUnlock(pMedium->hGlobal);
+ if (fRelease)
+ ReleaseStgMedium(pMedium);
+ return ResultFromScode(S_OK);
+ }
+ return ResultFromScode(E_NOTIMPL);
+}
+
+
+STDMETHODIMP
+QOleDataObject::EnumFormatEtc(DWORD dwDirection, LPENUMFORMATETC FAR* ppenumFormatEtc)
+{
+#ifdef QDND_DEBUG
+ qDebug("QOleDataObject::EnumFormatEtc(DWORD dwDirection, LPENUMFORMATETC FAR* ppenumFormatEtc)");
+#endif
+
+ if (!data)
+ return ResultFromScode(DATA_E_FORMATETC);
+
+ SCODE sc = S_OK;
+
+ QVector<FORMATETC> fmtetcs;
+ if (dwDirection == DATADIR_GET) {
+ fmtetcs = QWindowsMime::allFormatsForMime(data);
+ } else {
+ FORMATETC formatetc;
+ formatetc.cfFormat = CF_PERFORMEDDROPEFFECT;
+ formatetc.dwAspect = DVASPECT_CONTENT;
+ formatetc.lindex = -1;
+ formatetc.ptd = NULL;
+ formatetc.tymed = TYMED_HGLOBAL;
+ fmtetcs.append(formatetc);
+ }
+
+ QOleEnumFmtEtc *enumFmtEtc = new QOleEnumFmtEtc(fmtetcs);
+ *ppenumFormatEtc = enumFmtEtc;
+ if (enumFmtEtc->isNull()) {
+ delete enumFmtEtc;
+ *ppenumFormatEtc = NULL;
+ sc = E_OUTOFMEMORY;
+ }
+
+ return ResultFromScode(sc);
+}
+
+STDMETHODIMP
+QOleDataObject::DAdvise(FORMATETC FAR*, DWORD,
+ LPADVISESINK, DWORD FAR*)
+{
+ return ResultFromScode(OLE_E_ADVISENOTSUPPORTED);
+}
+
+
+STDMETHODIMP
+QOleDataObject::DUnadvise(DWORD)
+{
+ return ResultFromScode(OLE_E_ADVISENOTSUPPORTED);
+}
+
+STDMETHODIMP
+QOleDataObject::EnumDAdvise(LPENUMSTATDATA FAR*)
+{
+ return ResultFromScode(OLE_E_ADVISENOTSUPPORTED);
+}
+
+#endif // QT_NO_DRAGANDDROP && QT_NO_CLIPBOARD
+
+#ifndef QT_NO_DRAGANDDROP
+
+//#define QDND_DEBUG
+
+#ifdef QDND_DEBUG
+extern QString dragActionsToString(Qt::DropActions actions);
+#endif
+
+Qt::DropActions translateToQDragDropActions(DWORD pdwEffects)
+{
+ Qt::DropActions actions = Qt::IgnoreAction;
+ if (pdwEffects & DROPEFFECT_LINK)
+ actions |= Qt::LinkAction;
+ if (pdwEffects & DROPEFFECT_COPY)
+ actions |= Qt::CopyAction;
+ if (pdwEffects & DROPEFFECT_MOVE)
+ actions |= Qt::MoveAction;
+ return actions;
+}
+
+Qt::DropAction translateToQDragDropAction(DWORD pdwEffect)
+{
+ if (pdwEffect & DROPEFFECT_LINK)
+ return Qt::LinkAction;
+ if (pdwEffect & DROPEFFECT_COPY)
+ return Qt::CopyAction;
+ if (pdwEffect & DROPEFFECT_MOVE)
+ return Qt::MoveAction;
+ return Qt::IgnoreAction;
+}
+
+DWORD translateToWinDragEffects(Qt::DropActions action)
+{
+ DWORD effect = DROPEFFECT_NONE;
+ if (action & Qt::LinkAction)
+ effect |= DROPEFFECT_LINK;
+ if (action & Qt::CopyAction)
+ effect |= DROPEFFECT_COPY;
+ if (action & Qt::MoveAction)
+ effect |= DROPEFFECT_MOVE;
+ return effect;
+}
+
+Qt::KeyboardModifiers toQtKeyboardModifiers(DWORD keyState)
+{
+ Qt::KeyboardModifiers modifiers = Qt::NoModifier;
+
+ if (keyState & MK_SHIFT)
+ modifiers |= Qt::ShiftModifier;
+ if (keyState & MK_CONTROL)
+ modifiers |= Qt::ControlModifier;
+ if (keyState & MK_ALT)
+ modifiers |= Qt::AltModifier;
+
+ return modifiers;
+}
+
+Qt::MouseButtons toQtMouseButtons(DWORD keyState)
+{
+ Qt::MouseButtons buttons = Qt::NoButton;
+
+ if (keyState & MK_LBUTTON)
+ buttons |= Qt::LeftButton;
+ if (keyState & MK_RBUTTON)
+ buttons |= Qt::RightButton;
+ if (keyState & MK_MBUTTON)
+ buttons |= Qt::MidButton;
+
+ return buttons;
+}
+
+class QOleDropSource : public IDropSource
+{
+public:
+ QOleDropSource();
+ virtual ~QOleDropSource();
+
+ void createCursors();
+
+ // IUnknown methods
+ STDMETHOD(QueryInterface)(REFIID riid, void ** ppvObj);
+ STDMETHOD_(ULONG,AddRef)(void);
+ STDMETHOD_(ULONG,Release)(void);
+
+ // IDropSource methods
+ STDMETHOD(QueryContinueDrag)(BOOL fEscapePressed, DWORD grfKeyState);
+ STDMETHOD(GiveFeedback)(DWORD dwEffect);
+
+private:
+ Qt::MouseButtons currentButtons;
+ Qt::DropAction currentAction;
+ QMap <Qt::DropAction, QCursor> cursors;
+
+ ULONG m_refs;
+};
+
+
+QOleDropSource::QOleDropSource()
+{
+ currentButtons = Qt::NoButton;
+ m_refs = 1;
+ currentAction = Qt::IgnoreAction;
+}
+
+QOleDropSource::~QOleDropSource()
+{
+}
+
+void QOleDropSource::createCursors()
+{
+ QDragManager *manager = QDragManager::self();
+ if (manager && manager->object
+ && (!manager->object->pixmap().isNull()
+ || manager->hasCustomDragCursors())) {
+ QPixmap pm = manager->object->pixmap();
+ QList<Qt::DropAction> actions;
+ actions << Qt::MoveAction << Qt::CopyAction << Qt::LinkAction;
+ if (!manager->object->pixmap().isNull())
+ actions << Qt::IgnoreAction;
+ QPoint hotSpot = manager->object->hotSpot();
+ for (int cnum = 0; cnum < actions.size(); ++cnum) {
+ QPixmap cpm = manager->dragCursor(actions.at(cnum));
+ int w = cpm.width();
+ int h = cpm.height();
+
+ if (!pm.isNull()) {
+ int x1 = qMin(-hotSpot.x(), 0);
+ int x2 = qMax(pm.width() - hotSpot.x(), cpm.width());
+ int y1 = qMin(-hotSpot.y(), 0);
+ int y2 = qMax(pm.height() - hotSpot.y(), cpm.height());
+
+ w = x2 - x1 + 1;
+ h = y2 - y1 + 1;
+ }
+
+ QRect srcRect = pm.rect();
+ QPoint pmDest = QPoint(qMax(0, -hotSpot.x()), qMax(0, -hotSpot.y()));
+ QPoint newHotSpot = hotSpot;
+
+#if defined(Q_OS_WINCE)
+ // Limited cursor size
+ int reqw = GetSystemMetrics(SM_CXCURSOR);
+ int reqh = GetSystemMetrics(SM_CYCURSOR);
+
+ QPoint hotspotInPM = newHotSpot - pmDest;
+ if (reqw < w) {
+ // Not wide enough - move objectpm right
+ qreal r = qreal(newHotSpot.x()) / w;
+ newHotSpot = QPoint(int(r * reqw), newHotSpot.y());
+ if (newHotSpot.x() + cpm.width() > reqw)
+ newHotSpot.setX(reqw - cpm.width());
+
+ srcRect = QRect(QPoint(hotspotInPM.x() - newHotSpot.x(), srcRect.top()), QSize(reqw, srcRect.height()));
+ }
+ if (reqh < h) {
+ qreal r = qreal(newHotSpot.y()) / h;
+ newHotSpot = QPoint(newHotSpot.x(), int(r * reqh));
+ if (newHotSpot.y() + cpm.height() > reqh)
+ newHotSpot.setY(reqh - cpm.height());
+
+ srcRect = QRect(QPoint(srcRect.left(), hotspotInPM.y() - newHotSpot.y()), QSize(srcRect.width(), reqh));
+ }
+ // Always use system cursor size
+ w = reqw;
+ h = reqh;
+#endif
+
+ QPixmap newCursor(w, h);
+ if (!pm.isNull()) {
+ newCursor.fill(QColor(0, 0, 0, 0));
+ QPainter p(&newCursor);
+ p.drawPixmap(pmDest, pm, srcRect);
+ p.drawPixmap(qMax(0,newHotSpot.x()),qMax(0,newHotSpot.y()),cpm);
+ } else {
+ newCursor = cpm;
+ }
+
+#ifndef QT_NO_CURSOR
+ cursors[actions.at(cnum)] = QCursor(newCursor, pm.isNull() ? 0 : qMax(0,newHotSpot.x()),
+ pm.isNull() ? 0 : qMax(0,newHotSpot.y()));
+#endif
+ }
+ }
+}
+
+
+
+//---------------------------------------------------------------------
+// IUnknown Methods
+//---------------------------------------------------------------------
+
+
+STDMETHODIMP
+QOleDropSource::QueryInterface(REFIID iid, void FAR* FAR* ppv)
+{
+ if(iid == IID_IUnknown || iid == IID_IDropSource)
+ {
+ *ppv = this;
+ ++m_refs;
+ return NOERROR;
+ }
+ *ppv = NULL;
+ return ResultFromScode(E_NOINTERFACE);
+}
+
+
+STDMETHODIMP_(ULONG)
+QOleDropSource::AddRef(void)
+{
+ return ++m_refs;
+}
+
+
+STDMETHODIMP_(ULONG)
+QOleDropSource::Release(void)
+{
+ if(--m_refs == 0)
+ {
+ delete this;
+ return 0;
+ }
+ return m_refs;
+}
+
+static inline Qt::MouseButtons keystate_to_mousebutton(DWORD grfKeyState)
+{
+ Qt::MouseButtons result;
+ if (grfKeyState & MK_LBUTTON)
+ result |= Qt::LeftButton;
+ if (grfKeyState & MK_MBUTTON)
+ result |= Qt::MidButton;
+ if (grfKeyState & MK_RBUTTON)
+ result |= Qt::RightButton;
+ if (grfKeyState & MK_XBUTTON1)
+ result |= Qt::XButton1;
+ if (grfKeyState & MK_XBUTTON2)
+ result |= Qt::XButton2;
+ return result;
+}
+
+//---------------------------------------------------------------------
+// IDropSource Methods
+//---------------------------------------------------------------------
+STDMETHODIMP
+QOleDropSource::QueryContinueDrag(BOOL fEscapePressed, DWORD grfKeyState)
+{
+#ifdef QDND_DEBUG
+ qDebug("QOleDropSource::QueryContinueDrag(fEscapePressed %d, grfKeyState %d)", fEscapePressed, grfKeyState);
+#endif
+
+ if (fEscapePressed) {
+ return ResultFromScode(DRAGDROP_S_CANCEL);
+ } else if (!(grfKeyState & (MK_LBUTTON|MK_MBUTTON|MK_RBUTTON))) {
+ return ResultFromScode(DRAGDROP_S_DROP);
+ } else {
+#if defined(Q_OS_WINCE)
+ // grfKeyState is broken on CE, therefore need to check
+ // the state manually
+ if ((GetAsyncKeyState(VK_LBUTTON) == 0) &&
+ (GetAsyncKeyState(VK_MBUTTON) == 0) &&
+ (GetAsyncKeyState(VK_RBUTTON) == 0)) {
+ return ResultFromScode(DRAGDROP_S_DROP);
+ }
+#else
+ if (currentButtons == Qt::NoButton) {
+ currentButtons = keystate_to_mousebutton(grfKeyState);
+ } else {
+ Qt::MouseButtons buttons = keystate_to_mousebutton(grfKeyState);
+ if (!(currentButtons & buttons))
+ return ResultFromScode(DRAGDROP_S_DROP);
+ }
+#endif
+ QApplication::processEvents();
+ return NOERROR;
+ }
+}
+
+STDMETHODIMP
+QOleDropSource::GiveFeedback(DWORD dwEffect)
+{
+ Qt::DropAction action = translateToQDragDropAction(dwEffect);
+
+#ifdef QDND_DEBUG
+ qDebug("QOleDropSource::GiveFeedback(DWORD dwEffect)");
+ qDebug("dwEffect = %s", dragActionsToString(action).toLatin1().data());
+#endif
+
+ if (currentAction != action) {
+ currentAction = action;
+ QDragManager::self()->emitActionChanged(currentAction);
+ }
+
+ if (cursors.contains(currentAction)) {
+#ifndef QT_NO_CURSOR
+ SetCursor(cursors[currentAction].handle());
+#endif
+ return ResultFromScode(S_OK);
+ }
+
+ return ResultFromScode(DRAGDROP_S_USEDEFAULTCURSORS);
+}
+
+//---------------------------------------------------------------------
+// QOleDropTarget
+//---------------------------------------------------------------------
+
+QOleDropTarget::QOleDropTarget(QWidget* w)
+: widget(w)
+{
+ m_refs = 1;
+}
+
+void QOleDropTarget::releaseQt()
+{
+ widget = 0;
+}
+
+//---------------------------------------------------------------------
+// IUnknown Methods
+//---------------------------------------------------------------------
+
+
+STDMETHODIMP
+QOleDropTarget::QueryInterface(REFIID iid, void FAR* FAR* ppv)
+{
+ if(iid == IID_IUnknown || iid == IID_IDropTarget)
+ {
+ *ppv = this;
+ AddRef();
+ return NOERROR;
+ }
+ *ppv = NULL;
+ return ResultFromScode(E_NOINTERFACE);
+}
+
+
+STDMETHODIMP_(ULONG)
+QOleDropTarget::AddRef(void)
+{
+ return ++m_refs;
+}
+
+
+STDMETHODIMP_(ULONG)
+QOleDropTarget::Release(void)
+{
+ if(--m_refs == 0)
+ {
+ delete this;
+ return 0;
+ }
+ return m_refs;
+}
+
+//---------------------------------------------------------------------
+// IDropTarget Methods
+//---------------------------------------------------------------------
+
+STDMETHODIMP
+QOleDropTarget::DragEnter(LPDATAOBJECT pDataObj, DWORD grfKeyState, POINTL pt, LPDWORD pdwEffect)
+{
+#ifdef QDND_DEBUG
+ qDebug("QOleDropTarget::DragEnter(LPDATAOBJECT pDataObj, DWORD grfKeyState, POINTL pt, LPDWORD pdwEffect)");
+#endif
+
+ if (!QApplicationPrivate::tryModalHelper(widget)) {
+ *pdwEffect = DROPEFFECT_NONE;
+ return NOERROR;
+ }
+
+ QDragManager *manager = QDragManager::self();
+ manager->dropData->currentDataObject = pDataObj;
+ manager->dropData->currentDataObject->AddRef();
+ sendDragEnterEvent(widget, grfKeyState, pt, pdwEffect);
+ *pdwEffect = chosenEffect;
+
+ return NOERROR;
+}
+
+void QOleDropTarget::sendDragEnterEvent(QWidget *dragEnterWidget, DWORD grfKeyState,
+ POINTL pt, LPDWORD pdwEffect)
+{
+ Q_ASSERT(dragEnterWidget);
+ lastPoint = dragEnterWidget->mapFromGlobal(QPoint(pt.x,pt.y));
+ lastKeyState = grfKeyState;
+
+ chosenEffect = DROPEFFECT_NONE;
+ currentWidget = dragEnterWidget;
+
+ QDragManager *manager = QDragManager::self();
+ QMimeData * md = manager->source() ? manager->dragPrivate()->data : manager->dropData;
+ QDragEnterEvent enterEvent(lastPoint, translateToQDragDropActions(*pdwEffect), md,
+ toQtMouseButtons(grfKeyState), toQtKeyboardModifiers(grfKeyState));
+ QApplication::sendEvent(dragEnterWidget, &enterEvent);
+ answerRect = enterEvent.answerRect();
+
+ if (enterEvent.isAccepted()) {
+ chosenEffect = translateToWinDragEffects(enterEvent.dropAction());
+ }
+
+ // Documentation states that a drag move event is sendt immidiatly after
+ // a drag enter event. This will honor widgets overriding dragMoveEvent only:
+ if (enterEvent.isAccepted()) {
+ QDragMoveEvent moveEvent(lastPoint, translateToQDragDropActions(*pdwEffect), md,
+ toQtMouseButtons(grfKeyState), toQtKeyboardModifiers(grfKeyState));
+ answerRect = enterEvent.answerRect();
+ moveEvent.setDropAction(enterEvent.dropAction());
+ moveEvent.accept(); // accept by default, since enter event was accepted.
+
+ QApplication::sendEvent(dragEnterWidget, &moveEvent);
+ if (moveEvent.isAccepted()) {
+ answerRect = moveEvent.answerRect();
+ chosenEffect = translateToWinDragEffects(moveEvent.dropAction());
+ } else {
+ chosenEffect = DROPEFFECT_NONE;
+ }
+ }
+
+}
+
+STDMETHODIMP
+QOleDropTarget::DragOver(DWORD grfKeyState, POINTL pt, LPDWORD pdwEffect)
+{
+#ifdef QDND_DEBUG
+ qDebug("QOleDropTarget::DragOver(grfKeyState %d, pt (%d,%d), pdwEffect %d)", grfKeyState, pt.x, pt.y, pdwEffect);
+#endif
+
+ QWidget *dragOverWidget = widget->childAt(widget->mapFromGlobal(QPoint(pt.x, pt.y)));
+ if (!dragOverWidget)
+ dragOverWidget = widget;
+
+
+ if (!QApplicationPrivate::tryModalHelper(dragOverWidget)
+ || !dragOverWidget->testAttribute(Qt::WA_DropSiteRegistered)) {
+ *pdwEffect = DROPEFFECT_NONE;
+ return NOERROR;
+ }
+
+ QPoint tmpPoint = dragOverWidget->mapFromGlobal(QPoint(pt.x, pt.y));
+ // see if we should compress this event
+ if ((tmpPoint == lastPoint || answerRect.contains(tmpPoint)) && lastKeyState == grfKeyState) {
+ *pdwEffect = chosenEffect;
+ return NOERROR;
+ }
+
+ if (!dragOverWidget->internalWinId() && dragOverWidget != currentWidget) {
+ QPointer<QWidget> dragOverWidgetGuard(dragOverWidget);
+ // Send drag leave event to the previous drag widget.
+ QDragLeaveEvent dragLeave;
+ if (currentWidget)
+ QApplication::sendEvent(currentWidget, &dragLeave);
+ if (!dragOverWidgetGuard) {
+ dragOverWidget = widget->childAt(widget->mapFromGlobal(QPoint(pt.x, pt.y)));
+ if (!dragOverWidget)
+ dragOverWidget = widget;
+ }
+ // Send drag enter event to the current drag widget.
+ sendDragEnterEvent(dragOverWidget, grfKeyState, pt, pdwEffect);
+ }
+
+ QDragManager *manager = QDragManager::self();
+ QMimeData *md = manager->source() ? manager->dragPrivate()->data : manager->dropData;
+
+ QDragMoveEvent oldEvent(lastPoint, translateToQDragDropActions(*pdwEffect), md,
+ toQtMouseButtons(lastKeyState), toQtKeyboardModifiers(lastKeyState));
+
+
+ lastPoint = tmpPoint;
+ lastKeyState = grfKeyState;
+
+ QDragMoveEvent e(lastPoint, translateToQDragDropActions(*pdwEffect), md,
+ toQtMouseButtons(grfKeyState), toQtKeyboardModifiers(grfKeyState));
+ if (chosenEffect != DROPEFFECT_NONE) {
+ if (oldEvent.dropAction() == e.dropAction() &&
+ oldEvent.keyboardModifiers() == e.keyboardModifiers())
+ e.setDropAction(translateToQDragDropAction(chosenEffect));
+ e.accept();
+ }
+ QApplication::sendEvent(dragOverWidget, &e);
+
+ answerRect = e.answerRect();
+ if (e.isAccepted())
+ chosenEffect = translateToWinDragEffects(e.dropAction());
+ else
+ chosenEffect = DROPEFFECT_NONE;
+ *pdwEffect = chosenEffect;
+
+ return NOERROR;
+}
+
+STDMETHODIMP
+QOleDropTarget::DragLeave()
+{
+#ifdef QDND_DEBUG
+ qDebug("QOleDropTarget::DragLeave()");
+#endif
+
+ if (!QApplicationPrivate::tryModalHelper(widget)) {
+ return NOERROR;
+ }
+
+ currentWidget = 0;
+ QDragLeaveEvent e;
+ QApplication::sendEvent(widget, &e);
+
+ QDragManager *manager = QDragManager::self();
+
+ if (manager->dropData->currentDataObject) { // Sanity
+ manager->dropData->currentDataObject->Release();
+ manager->dropData->currentDataObject = 0;
+ }
+
+ return NOERROR;
+}
+
+#define KEY_STATE_BUTTON_MASK (MK_LBUTTON | MK_MBUTTON | MK_RBUTTON)
+
+STDMETHODIMP
+QOleDropTarget::Drop(LPDATAOBJECT /*pDataObj*/, DWORD grfKeyState, POINTL pt, LPDWORD pdwEffect)
+{
+#ifdef QDND_DEBUG
+ qDebug("QOleDropTarget::Drop(LPDATAOBJECT /*pDataObj*/, grfKeyState %d, POINTL pt, LPDWORD pdwEffect)", grfKeyState);
+#endif
+
+ QWidget *dropWidget = widget->childAt(widget->mapFromGlobal(QPoint(pt.x, pt.y)));
+ if (!dropWidget)
+ dropWidget = widget;
+
+ if (!QApplicationPrivate::tryModalHelper(dropWidget)
+ || !dropWidget->testAttribute(Qt::WA_DropSiteRegistered)) {
+ *pdwEffect = DROPEFFECT_NONE;
+ return NOERROR;
+ }
+
+ lastPoint = dropWidget->mapFromGlobal(QPoint(pt.x,pt.y));
+ // grfKeyState does not all ways contain button state in the drop so if
+ // it doesn't then use the last known button state;
+ if ((grfKeyState & KEY_STATE_BUTTON_MASK) == 0)
+ grfKeyState |= lastKeyState & KEY_STATE_BUTTON_MASK;
+ lastKeyState = grfKeyState;
+
+ QDragManager *manager = QDragManager::self();
+ QMimeData *md = manager->source() ? manager->dragPrivate()->data : manager->dropData;
+ QDropEvent e(lastPoint, translateToQDragDropActions(*pdwEffect), md,
+ toQtMouseButtons(grfKeyState), toQtKeyboardModifiers(grfKeyState));
+ if (chosenEffect != DROPEFFECT_NONE) {
+ e.setDropAction(translateToQDragDropAction(chosenEffect));
+ }
+ QApplication::sendEvent(dropWidget, &e);
+
+ if (chosenEffect != DROPEFFECT_NONE) {
+ e.accept();
+ }
+
+
+ if (e.isAccepted()) {
+ if (e.dropAction() == Qt::MoveAction || e.dropAction() == Qt::TargetMoveAction) {
+ if (e.dropAction() == Qt::MoveAction)
+ chosenEffect = DROPEFFECT_MOVE;
+ else
+ chosenEffect = DROPEFFECT_COPY;
+ HGLOBAL hData = GlobalAlloc(0, sizeof(DWORD));
+ if (hData) {
+ DWORD *moveEffect = (DWORD *)GlobalLock(hData);;
+ *moveEffect = DROPEFFECT_MOVE;
+ GlobalUnlock(hData);
+ STGMEDIUM medium;
+ memset(&medium, 0, sizeof(STGMEDIUM));
+ medium.tymed = TYMED_HGLOBAL;
+ medium.hGlobal = hData;
+ FORMATETC format;
+ format.cfFormat = RegisterClipboardFormat(CFSTR_PERFORMEDDROPEFFECT);
+ format.tymed = TYMED_HGLOBAL;
+ format.ptd = 0;
+ format.dwAspect = 1;
+ format.lindex = -1;
+ manager->dropData->currentDataObject->SetData(&format, &medium, true);
+ }
+ } else {
+ chosenEffect = translateToWinDragEffects(e.dropAction());
+ }
+ } else {
+ chosenEffect = DROPEFFECT_NONE;
+ }
+ *pdwEffect = chosenEffect;
+
+
+ if (manager->dropData->currentDataObject) {
+ manager->dropData->currentDataObject->Release();
+ manager->dropData->currentDataObject = 0;
+ }
+
+ return NOERROR;
+
+ // We won't get any mouserelease-event, so manually adjust qApp state:
+///### test this QApplication::winMouseButtonUp();
+}
+
+//---------------------------------------------------------------------
+// QDropData
+//---------------------------------------------------------------------
+
+bool QDropData::hasFormat_sys(const QString &mimeType) const
+{
+ if (!currentDataObject) // Sanity
+ return false;
+
+ return QWindowsMime::converterToMime(mimeType, currentDataObject) != 0;
+}
+
+QStringList QDropData::formats_sys() const
+{
+ QStringList fmts;
+ if (!currentDataObject) // Sanity
+ return fmts;
+
+ fmts = QWindowsMime::allMimesForFormats(currentDataObject);
+
+ return fmts;
+}
+
+QVariant QDropData::retrieveData_sys(const QString &mimeType, QVariant::Type type) const
+{
+ QVariant result;
+
+ if (!currentDataObject) // Sanity
+ return result;
+
+ QWindowsMime *converter = QWindowsMime::converterToMime(mimeType, currentDataObject);
+
+ if (converter)
+ result = converter->convertToMime(mimeType, currentDataObject, type);
+
+ return result;
+}
+
+Qt::DropAction QDragManager::drag(QDrag *o)
+
+{
+#ifdef QDND_DEBUG
+ qDebug("QDragManager::drag(QDrag *drag)");
+#endif
+
+ if (object == o || !o || !o->d_func()->source)
+ return Qt::IgnoreAction;
+
+ if (object) {
+ cancel();
+ qApp->removeEventFilter(this);
+ beingCancelled = false;
+ }
+
+ object = o;
+
+#ifdef QDND_DEBUG
+ qDebug("actions = %s", dragActionsToString(dragPrivate()->possible_actions).toLatin1().data());
+#endif
+
+ dragPrivate()->target = 0;
+
+#ifndef QT_NO_ACCESSIBILITY
+ QAccessible::updateAccessibility(this, 0, QAccessible::DragDropStart);
+#endif
+
+ DWORD resultEffect;
+ QOleDropSource *src = new QOleDropSource();
+ src->createCursors();
+ QOleDataObject *obj = new QOleDataObject(o->mimeData());
+ DWORD allowedEffects = translateToWinDragEffects(dragPrivate()->possible_actions);
+
+#if !defined(Q_OS_WINCE) || defined(GWES_ICONCURS)
+ HRESULT r = DoDragDrop(obj, src, allowedEffects, &resultEffect);
+#else
+ HRESULT r = DRAGDROP_S_CANCEL;
+ resultEffect = DROPEFFECT_MOVE;
+#endif
+
+ Qt::DropAction ret = Qt::IgnoreAction;
+ if (r == DRAGDROP_S_DROP) {
+ if (obj->reportedPerformedEffect() == DROPEFFECT_MOVE && resultEffect != DROPEFFECT_MOVE) {
+ ret = Qt::TargetMoveAction;
+ resultEffect = DROPEFFECT_MOVE;
+ } else {
+ ret = translateToQDragDropAction(resultEffect);
+ }
+ // Force it to be a copy if an unsupported operation occurred.
+ // This indicates a bug in the drop target.
+ if (resultEffect != DROPEFFECT_NONE && !(resultEffect & allowedEffects))
+ ret = Qt::CopyAction;
+ } else {
+ dragPrivate()->target = 0;
+ }
+
+ // clean up
+ obj->releaseQt();
+ obj->Release(); // Will delete obj if refcount becomes 0
+ src->Release(); // Will delete src if refcount becomes 0
+ object = 0;
+ o->setMimeData(0);
+ o->deleteLater();
+
+#ifndef QT_NO_ACCESSIBILITY
+ QAccessible::updateAccessibility(this, 0, QAccessible::DragDropEnd);
+#endif
+
+ return ret;
+}
+
+void QDragManager::cancel(bool /* deleteSource */)
+{
+ if (object) {
+ beingCancelled = true;
+ object = 0;
+ }
+
+#ifndef QT_NO_CURSOR
+ // insert cancel code here ######## todo
+
+ if (restoreCursor) {
+ QApplication::restoreOverrideCursor();
+ restoreCursor = false;
+ }
+#endif
+#ifndef QT_NO_ACCESSIBILITY
+ QAccessible::updateAccessibility(this, 0, QAccessible::DragDropEnd);
+#endif
+}
+
+void QDragManager::updatePixmap()
+{
+ // not used in windows implementation
+}
+
+bool QDragManager::eventFilter(QObject *, QEvent *)
+{
+ // not used in windows implementation
+ return false;
+}
+
+void QDragManager::timerEvent(QTimerEvent*)
+{
+ // not used in windows implementation
+}
+
+void QDragManager::move(const QPoint &)
+{
+ // not used in windows implementation
+}
+
+void QDragManager::drop()
+{
+ // not used in windows implementation
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_DRAGANDDROP