1 files changed, 117 insertions, 0 deletions
diff --git a/sd/source/ui/slidesorter/controller/SlsDragAndDropContext.cxx b/sd/source/ui/slidesorter/controller/SlsDragAndDropContext.cxx
new file mode 100644
index 0000000000..b635accc55
--- /dev/null
+++ b/sd/source/ui/slidesorter/controller/SlsDragAndDropContext.cxx
@@ -0,0 +1,117 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "SlsDragAndDropContext.hxx"
+
+#include <SlideSorter.hxx>
+#include <model/SlideSorterModel.hxx>
+#include <controller/SlideSorterController.hxx>
+#include <controller/SlsInsertionIndicatorHandler.hxx>
+#include <controller/SlsScrollBarManager.hxx>
+#include <controller/SlsProperties.hxx>
+#include <controller/SlsClipboard.hxx>
+#include <controller/SlsTransferableData.hxx>
+#include <Window.hxx>
+#include <sdtreelb.hxx>
+#include <sdmod.hxx>
+
+namespace sd::slidesorter::controller {
+
+DragAndDropContext::DragAndDropContext (SlideSorter& rSlideSorter)
+    : mpTargetSlideSorter(&rSlideSorter),
+      mnInsertionIndex(-1)
+{
+    // No Drag-and-Drop for master pages.
+    if (rSlideSorter.GetModel().GetEditMode() != EditMode::Page)
+        return;
+
+    // For properly handling transferables created by the navigator we
+    // need additional information.  For this a user data object is
+    // created that contains the necessary information.
+    SdTransferable* pTransferable = SD_MOD()->pTransferDrag;
+    SdPageObjsTLV::SdPageObjsTransferable* pTreeListBoxTransferable
+        = dynamic_cast<SdPageObjsTLV::SdPageObjsTransferable*>(pTransferable);
+    if (pTreeListBoxTransferable!=nullptr && !TransferableData::GetFromTransferable(pTransferable))
+    {
+        pTransferable->AddUserData(
+            sd::slidesorter::controller::Clipboard::CreateTransferableUserData(pTransferable));
+    }
+
+    rSlideSorter.GetController().GetInsertionIndicatorHandler()->UpdateIndicatorIcon(pTransferable);
+}
+
+DragAndDropContext::~DragAndDropContext() COVERITY_NOEXCEPT_FALSE
+{
+    SetTargetSlideSorter();
+}
+
+void DragAndDropContext::Dispose()
+{
+    mnInsertionIndex = -1;
+}
+
+void DragAndDropContext::UpdatePosition (
+    const Point& rMousePosition,
+    const InsertionIndicatorHandler::Mode eMode,
+    const bool bAllowAutoScroll)
+{
+    if (mpTargetSlideSorter == nullptr)
+        return;
+
+    // Convert window coordinates into model coordinates (we need the
+    // window coordinates for auto-scrolling because that remains
+    // constant while scrolling.)
+    sd::Window *pWindow = mpTargetSlideSorter->GetContentWindow().get();
+    const Point aMouseModelPosition (pWindow->PixelToLogic(rMousePosition));
+    std::shared_ptr<InsertionIndicatorHandler> pInsertionIndicatorHandler (
+        mpTargetSlideSorter->GetController().GetInsertionIndicatorHandler());
+
+    bool bDoAutoScroll = bAllowAutoScroll
+            && mpTargetSlideSorter->GetController().GetScrollBarManager().AutoScroll(
+                rMousePosition,
+                [this, eMode, rMousePosition] () {
+                    return this->UpdatePosition(rMousePosition, eMode, false);
+                });
+
+    if (!bDoAutoScroll)
+    {
+        pInsertionIndicatorHandler->UpdatePosition(aMouseModelPosition, eMode);
+
+        // Remember the new insertion index.
+        mnInsertionIndex = pInsertionIndicatorHandler->GetInsertionPageIndex();
+        if (pInsertionIndicatorHandler->IsInsertionTrivial(mnInsertionIndex, eMode))
+            mnInsertionIndex = -1;
+    }
+}
+
+void DragAndDropContext::SetTargetSlideSorter()
+{
+    if (mpTargetSlideSorter != nullptr)
+    {
+        mpTargetSlideSorter->GetController().GetScrollBarManager().StopAutoScroll();
+        mpTargetSlideSorter->GetController().GetInsertionIndicatorHandler()->End(
+            Animator::AM_Animated);
+    }
+
+    mpTargetSlideSorter = nullptr;
+}
+
+} // end of namespace ::sd::slidesorter::controller
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */