sd/source/ui/slidesorter/controller/SlsDragAndDropContext.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include "SlsDragAndDropContext.hxx"
  21
  22 #include <SlideSorter.hxx>
  23 #include <model/SlideSorterModel.hxx>
  24 #include <controller/SlideSorterController.hxx>
  25 #include <controller/SlsInsertionIndicatorHandler.hxx>
  26 #include <controller/SlsScrollBarManager.hxx>
  27 #include <controller/SlsProperties.hxx>
  28 #include <controller/SlsClipboard.hxx>
  29 #include <controller/SlsTransferableData.hxx>
  30 #include <Window.hxx>
  31 #include <sdtreelb.hxx>
  32 #include <sdmod.hxx>
  33
  34 namespace sd::slidesorter::controller {
  35
  36 DragAndDropContext::DragAndDropContext (SlideSorter& rSlideSorter)
  37     : mpTargetSlideSorter(&rSlideSorter),
  38       mnInsertionIndex(-1)
  39 {
  40     // No Drag-and-Drop for master pages.
  41     if (rSlideSorter.GetModel().GetEditMode() != EditMode::Page)
  42         return;
  43
  44     // For properly handling transferables created by the navigator we
  45     // need additional information.  For this a user data object is
  46     // created that contains the necessary information.
  47     SdTransferable* pTransferable = SdModule::get()->pTransferDrag;
  48     SdPageObjsTLV::SdPageObjsTransferable* pTreeListBoxTransferable
  49         = dynamic_cast<SdPageObjsTLV::SdPageObjsTransferable*>(pTransferable);
  50     if (pTreeListBoxTransferable!=nullptr && !TransferableData::GetFromTransferable(pTransferable))
  51     {
  52         pTransferable->AddUserData(
  53             sd::slidesorter::controller::Clipboard::CreateTransferableUserData(pTransferable));
  54     }
  55
  56     rSlideSorter.GetController().GetInsertionIndicatorHandler()->UpdateIndicatorIcon(pTransferable);
  57 }
  58
  59 DragAndDropContext::~DragAndDropContext() COVERITY_NOEXCEPT_FALSE
  60 {
  61     SetTargetSlideSorter();
  62 }
  63
  64 void DragAndDropContext::Dispose()
  65 {
  66     mnInsertionIndex = -1;
  67 }
  68
  69 void DragAndDropContext::UpdatePosition (
  70     const Point& rMousePosition,
  71     const InsertionIndicatorHandler::Mode eMode,
  72     const bool bAllowAutoScroll)
  73 {
  74     if (mpTargetSlideSorter == nullptr)
  75         return;
  76
  77     // Convert window coordinates into model coordinates (we need the
  78     // window coordinates for auto-scrolling because that remains
  79     // constant while scrolling.)
  80     sd::Window *pWindow = mpTargetSlideSorter->GetContentWindow().get();
  81     const Point aMouseModelPosition (pWindow->PixelToLogic(rMousePosition));
  82     std::shared_ptr<InsertionIndicatorHandler> pInsertionIndicatorHandler (
  83         mpTargetSlideSorter->GetController().GetInsertionIndicatorHandler());
  84
  85     bool bDoAutoScroll = bAllowAutoScroll
  86             && mpTargetSlideSorter->GetController().GetScrollBarManager().AutoScroll(
  87                 rMousePosition,
  88                 [this, eMode, rMousePosition] () {
  89                     return this->UpdatePosition(rMousePosition, eMode, false);
  90                 });
  91
  92     if (!bDoAutoScroll)
  93     {
  94         pInsertionIndicatorHandler->UpdatePosition(aMouseModelPosition, eMode);
  95
  96         // Remember the new insertion index.
  97         mnInsertionIndex = pInsertionIndicatorHandler->GetInsertionPageIndex();
  98         if (pInsertionIndicatorHandler->IsInsertionTrivial(mnInsertionIndex, eMode))
  99             mnInsertionIndex = -1;
 100     }
 101 }
 102
 103 void DragAndDropContext::SetTargetSlideSorter()
 104 {
 105     if (mpTargetSlideSorter != nullptr)
 106     {
 107         mpTargetSlideSorter->GetController().GetScrollBarManager().StopAutoScroll();
 108         mpTargetSlideSorter->GetController().GetInsertionIndicatorHandler()->End(
 109             Animator::AM_Animated);
 110     }
 111
 112     mpTargetSlideSorter = nullptr;
 113 }
 114
 115 } // end of namespace ::sd::slidesorter::controller
 116
 117 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */