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-rw-r--r--vcl/qt5/QtDragAndDrop.cxx252
1 files changed, 252 insertions, 0 deletions
diff --git a/vcl/qt5/QtDragAndDrop.cxx b/vcl/qt5/QtDragAndDrop.cxx
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+++ b/vcl/qt5/QtDragAndDrop.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ */
+
+#include <com/sun/star/awt/MouseButton.hpp>
+#include <com/sun/star/datatransfer/DataFlavor.hpp>
+#include <com/sun/star/datatransfer/dnd/DNDConstants.hpp>
+#include <cppuhelper/supportsservice.hxx>
+#include <sal/log.hxx>
+
+#include <QtDragAndDrop.hxx>
+#include <QtFrame.hxx>
+#include <QtTransferable.hxx>
+#include <QtWidget.hxx>
+
+#include <QtGui/QDrag>
+
+using namespace com::sun::star;
+
+QtDragSource::~QtDragSource() {}
+
+void QtDragSource::deinitialize() { m_pFrame = nullptr; }
+
+sal_Bool QtDragSource::isDragImageSupported() { return true; }
+
+sal_Int32 QtDragSource::getDefaultCursor(sal_Int8) { return 0; }
+
+void QtDragSource::initialize(const css::uno::Sequence<css::uno::Any>& rArguments)
+{
+ if (rArguments.getLength() < 2)
+ {
+ throw uno::RuntimeException("DragSource::initialize: Cannot install window event handler",
+ static_cast<OWeakObject*>(this));
+ }
+
+ sal_IntPtr nFrame = 0;
+ rArguments.getConstArray()[1] >>= nFrame;
+
+ if (!nFrame)
+ {
+ throw uno::RuntimeException("DragSource::initialize: missing SalFrame",
+ static_cast<OWeakObject*>(this));
+ }
+
+ m_pFrame = reinterpret_cast<QtFrame*>(nFrame);
+ m_pFrame->registerDragSource(this);
+}
+
+void QtDragSource::startDrag(
+ const datatransfer::dnd::DragGestureEvent& /*rEvent*/, sal_Int8 sourceActions,
+ sal_Int32 /*cursor*/, sal_Int32 /*image*/,
+ const css::uno::Reference<css::datatransfer::XTransferable>& rTrans,
+ const css::uno::Reference<css::datatransfer::dnd::XDragSourceListener>& rListener)
+{
+ m_xListener = rListener;
+
+ if (m_pFrame)
+ {
+ QDrag* drag = new QDrag(m_pFrame->GetQWidget());
+ drag->setMimeData(new QtMimeData(rTrans));
+ // just a reminder that exec starts a nested event loop, so everything after
+ // this call is just executed, after D'n'D has finished!
+ drag->exec(toQtDropActions(sourceActions), getPreferredDropAction(sourceActions));
+ }
+
+ // the drop will eventually call fire_dragEnd, which will clear the listener.
+ // if D'n'D ends without success, we just get a leave event without any indicator,
+ // but the event loop will be terminated, so we have to try to inform the source of
+ // a failure in any way.
+ fire_dragEnd(datatransfer::dnd::DNDConstants::ACTION_NONE, false);
+}
+
+void QtDragSource::fire_dragEnd(sal_Int8 nAction, bool bDropSuccessful)
+{
+ if (!m_xListener.is())
+ return;
+
+ datatransfer::dnd::DragSourceDropEvent aEv;
+ aEv.DropAction = nAction;
+ aEv.DropSuccess = bDropSuccessful;
+
+ auto xListener = m_xListener;
+ m_xListener.clear();
+ xListener->dragDropEnd(aEv);
+}
+
+OUString SAL_CALL QtDragSource::getImplementationName()
+{
+ return "com.sun.star.datatransfer.dnd.VclQtDragSource";
+}
+
+sal_Bool SAL_CALL QtDragSource::supportsService(OUString const& ServiceName)
+{
+ return cppu::supportsService(this, ServiceName);
+}
+
+css::uno::Sequence<OUString> SAL_CALL QtDragSource::getSupportedServiceNames()
+{
+ return { "com.sun.star.datatransfer.dnd.QtDragSource" };
+}
+
+QtDropTarget::QtDropTarget()
+ : WeakComponentImplHelper(m_aMutex)
+ , m_pFrame(nullptr)
+ , m_bActive(false)
+ , m_nDefaultActions(0)
+{
+}
+
+OUString SAL_CALL QtDropTarget::getImplementationName()
+{
+ return "com.sun.star.datatransfer.dnd.VclQtDropTarget";
+}
+
+sal_Bool SAL_CALL QtDropTarget::supportsService(OUString const& ServiceName)
+{
+ return cppu::supportsService(this, ServiceName);
+}
+
+css::uno::Sequence<OUString> SAL_CALL QtDropTarget::getSupportedServiceNames()
+{
+ return { "com.sun.star.datatransfer.dnd.QtDropTarget" };
+}
+
+QtDropTarget::~QtDropTarget() {}
+
+void QtDropTarget::deinitialize()
+{
+ m_pFrame = nullptr;
+ m_bActive = false;
+}
+
+void QtDropTarget::initialize(const uno::Sequence<uno::Any>& rArguments)
+{
+ if (rArguments.getLength() < 2)
+ {
+ throw uno::RuntimeException("DropTarget::initialize: Cannot install window event handler",
+ static_cast<OWeakObject*>(this));
+ }
+
+ sal_IntPtr nFrame = 0;
+ rArguments.getConstArray()[1] >>= nFrame;
+
+ if (!nFrame)
+ {
+ throw uno::RuntimeException("DropTarget::initialize: missing SalFrame",
+ static_cast<OWeakObject*>(this));
+ }
+
+ m_nDropAction = datatransfer::dnd::DNDConstants::ACTION_NONE;
+
+ m_pFrame = reinterpret_cast<QtFrame*>(nFrame);
+ m_pFrame->registerDropTarget(this);
+ m_bActive = true;
+}
+
+void QtDropTarget::addDropTargetListener(
+ const uno::Reference<css::datatransfer::dnd::XDropTargetListener>& xListener)
+{
+ ::osl::Guard<::osl::Mutex> aGuard(m_aMutex);
+
+ m_aListeners.push_back(xListener);
+}
+
+void QtDropTarget::removeDropTargetListener(
+ const uno::Reference<css::datatransfer::dnd::XDropTargetListener>& xListener)
+{
+ ::osl::Guard<::osl::Mutex> aGuard(m_aMutex);
+
+ m_aListeners.erase(std::remove(m_aListeners.begin(), m_aListeners.end(), xListener),
+ m_aListeners.end());
+}
+
+sal_Bool QtDropTarget::isActive() { return m_bActive; }
+
+void QtDropTarget::setActive(sal_Bool bActive) { m_bActive = bActive; }
+
+sal_Int8 QtDropTarget::getDefaultActions() { return m_nDefaultActions; }
+
+void QtDropTarget::setDefaultActions(sal_Int8 nDefaultActions)
+{
+ m_nDefaultActions = nDefaultActions;
+}
+
+void QtDropTarget::fire_dragEnter(const css::datatransfer::dnd::DropTargetDragEnterEvent& dtde)
+{
+ osl::ClearableGuard<::osl::Mutex> aGuard(m_aMutex);
+ std::vector<css::uno::Reference<css::datatransfer::dnd::XDropTargetListener>> aListeners(
+ m_aListeners);
+ aGuard.clear();
+
+ for (auto const& listener : aListeners)
+ {
+ listener->dragEnter(dtde);
+ }
+}
+
+void QtDropTarget::fire_dragOver(const css::datatransfer::dnd::DropTargetDragEnterEvent& dtde)
+{
+ osl::ClearableGuard<::osl::Mutex> aGuard(m_aMutex);
+ std::vector<css::uno::Reference<css::datatransfer::dnd::XDropTargetListener>> aListeners(
+ m_aListeners);
+ aGuard.clear();
+
+ for (auto const& listener : aListeners)
+ listener->dragOver(dtde);
+}
+
+void QtDropTarget::fire_drop(const css::datatransfer::dnd::DropTargetDropEvent& dtde)
+{
+ m_bDropSuccessful = true;
+
+ osl::ClearableGuard<osl::Mutex> aGuard(m_aMutex);
+ std::vector<css::uno::Reference<css::datatransfer::dnd::XDropTargetListener>> aListeners(
+ m_aListeners);
+ aGuard.clear();
+
+ for (auto const& listener : aListeners)
+ listener->drop(dtde);
+}
+
+void QtDropTarget::fire_dragExit(const css::datatransfer::dnd::DropTargetEvent& dte)
+{
+ osl::ClearableGuard<::osl::Mutex> aGuard(m_aMutex);
+ std::vector<css::uno::Reference<css::datatransfer::dnd::XDropTargetListener>> aListeners(
+ m_aListeners);
+ aGuard.clear();
+
+ for (auto const& listener : aListeners)
+ listener->dragExit(dte);
+}
+
+void QtDropTarget::acceptDrag(sal_Int8 dragOperation) { m_nDropAction = dragOperation; }
+
+void QtDropTarget::rejectDrag() { m_nDropAction = 0; }
+
+void QtDropTarget::acceptDrop(sal_Int8 dropOperation) { m_nDropAction = dropOperation; }
+
+void QtDropTarget::rejectDrop() { m_nDropAction = 0; }
+
+void QtDropTarget::dropComplete(sal_Bool success)
+{
+ m_bDropSuccessful = (m_bDropSuccessful && success);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-07 17:07:07 +0000