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 <model/SlsPageEnumerationProvider.hxx>
  25 #include <view/SlideSorterView.hxx>
  26 #include <controller/SlideSorterController.hxx>
  27 #include <controller/SlsInsertionIndicatorHandler.hxx>
  28 #include <controller/SlsScrollBarManager.hxx>
  29 #include <controller/SlsProperties.hxx>
  30 #include <controller/SlsSelectionFunction.hxx>
  31 #include <controller/SlsSelectionManager.hxx>
  32 #include <controller/SlsClipboard.hxx>
  33 #include <controller/SlsTransferableData.hxx>
  34 #include <DrawDocShell.hxx>
  35 #include <drawdoc.hxx>
  36 #include <Window.hxx>
  37 #include <app.hrc>
  38 #include <sdtreelb.hxx>
  39 #include <sdmod.hxx>
  40 #include <sfx2/bindings.hxx>
  41
  42 namespace sd { namespace slidesorter { namespace controller {
  43
  44 DragAndDropContext::DragAndDropContext (SlideSorter& rSlideSorter)
  45     : mpTargetSlideSorter(&rSlideSorter),
  46       mnInsertionIndex(-1)
  47 {
  48     // No Drag-and-Drop for master pages.
  49     if (rSlideSorter.GetModel().GetEditMode() != EditMode::Page)
  50         return;
  51
  52     // For properly handling transferables created by the navigator we
  53     // need additional information.  For this a user data object is
  54     // created that contains the necessary information.
  55     SdTransferable* pTransferable = SD_MOD()->pTransferDrag;
  56     SdPageObjsTLB::SdPageObjsTransferable* pTreeListBoxTransferable
  57         = dynamic_cast<SdPageObjsTLB::SdPageObjsTransferable*>(pTransferable);
  58     if (pTreeListBoxTransferable!=nullptr && !TransferableData::GetFromTransferable(pTransferable))
  59     {
  60         pTransferable->AddUserData(
  61             sd::slidesorter::controller::Clipboard::CreateTransferableUserData(pTransferable));
  62     }
  63
  64     rSlideSorter.GetController().GetInsertionIndicatorHandler()->UpdateIndicatorIcon(pTransferable);
  65 }
  66
  67 DragAndDropContext::~DragAndDropContext() COVERITY_NOEXCEPT_FALSE
  68 {
  69     SetTargetSlideSorter();
  70 }
  71
  72 void DragAndDropContext::Dispose()
  73 {
  74     mnInsertionIndex = -1;
  75 }
  76
  77 void DragAndDropContext::UpdatePosition (
  78     const Point& rMousePosition,
  79     const InsertionIndicatorHandler::Mode eMode,
  80     const bool bAllowAutoScroll)
  81 {
  82     if (mpTargetSlideSorter == nullptr)
  83         return;
  84
  85     if (mpTargetSlideSorter->GetProperties()->IsUIReadOnly())
  86         return;
  87
  88     // Convert window coordinates into model coordinates (we need the
  89     // window coordinates for auto-scrolling because that remains
  90     // constant while scrolling.)
  91     sd::Window *pWindow = mpTargetSlideSorter->GetContentWindow().get();
  92     const Point aMouseModelPosition (pWindow->PixelToLogic(rMousePosition));
  93     std::shared_ptr<InsertionIndicatorHandler> pInsertionIndicatorHandler (
  94         mpTargetSlideSorter->GetController().GetInsertionIndicatorHandler());
  95
  96     bool bDoAutoScroll = bAllowAutoScroll
  97             && mpTargetSlideSorter->GetController().GetScrollBarManager().AutoScroll(
  98                 rMousePosition,
  99                 [this, eMode, &rMousePosition] () {
 100                     return this->UpdatePosition(rMousePosition, eMode, false);
 101                 });
 102
 103     if (!bDoAutoScroll)
 104     {
 105         pInsertionIndicatorHandler->UpdatePosition(aMouseModelPosition, eMode);
 106
 107         // Remember the new insertion index.
 108         mnInsertionIndex = pInsertionIndicatorHandler->GetInsertionPageIndex();
 109         if (pInsertionIndicatorHandler->IsInsertionTrivial(mnInsertionIndex, eMode))
 110             mnInsertionIndex = -1;
 111     }
 112 }
 113
 114 void DragAndDropContext::SetTargetSlideSorter()
 115 {
 116     if (mpTargetSlideSorter != nullptr)
 117     {
 118         mpTargetSlideSorter->GetController().GetScrollBarManager().StopAutoScroll();
 119         mpTargetSlideSorter->GetController().GetInsertionIndicatorHandler()->End(
 120             Animator::AM_Animated);
 121     }
 122
 123     mpTargetSlideSorter = nullptr;
 124 }
 125
 126 } } } // end of namespace ::sd::slidesorter::controller
 127
 128 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */