sd/source/ui/slidesorter/controller/SlsCurrentSlideManager.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 <SlideSorter.hxx>
  21 #include <model/SlideSorterModel.hxx>
  22 #include <model/SlsPageDescriptor.hxx>
  23 #include <controller/SlsPageSelector.hxx>
  24 #include <controller/SlideSorterController.hxx>
  25 #include <controller/SlsCurrentSlideManager.hxx>
  26 #include <controller/SlsFocusManager.hxx>
  27 #include <view/SlideSorterView.hxx>
  28 #include <ViewShellBase.hxx>
  29 #include <ViewShell.hxx>
  30 #include <DrawViewShell.hxx>
  31 #include <sdpage.hxx>
  32 #include <FrameView.hxx>
  33 #include <com/sun/star/beans/XPropertySet.hpp>
  34
  35 using namespace ::com::sun::star;
  36 using namespace ::com::sun::star::uno;
  37
  38 using namespace ::sd::slidesorter::model;
  39
  40 namespace sd { namespace slidesorter { namespace controller {
  41
  42 CurrentSlideManager::CurrentSlideManager (SlideSorter& rSlideSorter)
  43     : mrSlideSorter(rSlideSorter),
  44       mnCurrentSlideIndex(-1),
  45       mpCurrentSlide(),
  46       maSwitchPageDelayTimer()
  47 {
  48     maSwitchPageDelayTimer.SetTimeout(100);
  49     maSwitchPageDelayTimer.SetInvokeHandler(LINK(this,CurrentSlideManager,SwitchPageCallback));
  50 }
  51
  52 CurrentSlideManager::~CurrentSlideManager()
  53 {
  54 }
  55
  56 void CurrentSlideManager::NotifyCurrentSlideChange (const SdPage* pPage)
  57 {
  58     if (pPage != nullptr)
  59         NotifyCurrentSlideChange(
  60             mrSlideSorter.GetModel().GetIndex(
  61                 Reference<drawing::XDrawPage>(
  62                     const_cast<SdPage*>(pPage)->getUnoPage(),
  63                     UNO_QUERY)));
  64     else
  65         NotifyCurrentSlideChange(-1);
  66 }
  67
  68 void CurrentSlideManager::NotifyCurrentSlideChange (const sal_Int32 nSlideIndex)
  69 {
  70     if (mnCurrentSlideIndex == nSlideIndex)
  71         return;
  72
  73     PageSelector::BroadcastLock aBroadcastLock (mrSlideSorter.GetController().GetPageSelector());
  74
  75     mrSlideSorter.GetController().GetPageSelector().DeselectAllPages();
  76
  77     ReleaseCurrentSlide();
  78     AcquireCurrentSlide(nSlideIndex);
  79
  80     // Update the selection.
  81     if (mpCurrentSlide)
  82     {
  83         mrSlideSorter.GetController().GetPageSelector().SelectPage(mpCurrentSlide);
  84         mrSlideSorter.GetController().GetFocusManager().SetFocusedPage(mpCurrentSlide);
  85     }
  86 }
  87
  88 void CurrentSlideManager::ReleaseCurrentSlide()
  89 {
  90     if (mpCurrentSlide.get() != nullptr)
  91         mrSlideSorter.GetView().SetState(mpCurrentSlide, PageDescriptor::ST_Current, false);
  92
  93     mpCurrentSlide.reset();
  94     mnCurrentSlideIndex = -1;
  95 }
  96
  97 void CurrentSlideManager::AcquireCurrentSlide (const sal_Int32 nSlideIndex)
  98 {
  99     mnCurrentSlideIndex = nSlideIndex;
 100
 101     // if current slide valid
 102     if (mnCurrentSlideIndex >= 0 && mnCurrentSlideIndex<mrSlideSorter.GetModel().GetPageCount())
 103     {
 104         // Get a descriptor for the XDrawPage reference.  Note that the
 105         // given XDrawPage may or may not be member of the slide sorter
 106         // document.
 107         mpCurrentSlide = mrSlideSorter.GetModel().GetPageDescriptor(mnCurrentSlideIndex);
 108         if (mpCurrentSlide.get() != nullptr)
 109             mrSlideSorter.GetView().SetState(mpCurrentSlide, PageDescriptor::ST_Current, true);
 110     }
 111 }
 112
 113 void CurrentSlideManager::SwitchCurrentSlide (
 114     const sal_Int32 nSlideIndex)
 115 {
 116     SwitchCurrentSlide(mrSlideSorter.GetModel().GetPageDescriptor(nSlideIndex), true/*bUpdateSelection*/);
 117 }
 118
 119 void CurrentSlideManager::SwitchCurrentSlide (
 120     const SharedPageDescriptor& rpDescriptor,
 121     const bool bUpdateSelection)
 122 {
 123     if (rpDescriptor.get() == nullptr || mpCurrentSlide==rpDescriptor)
 124         return;
 125
 126     ReleaseCurrentSlide();
 127     AcquireCurrentSlide((rpDescriptor->GetPage()->GetPageNum()-1)/2);
 128
 129     ViewShell* pViewShell = mrSlideSorter.GetViewShell();
 130     if (pViewShell != nullptr && pViewShell->IsMainViewShell())
 131     {
 132         // The slide sorter is the main view.
 133         FrameView* pFrameView = pViewShell->GetFrameView();
 134         if (pFrameView != nullptr)
 135             pFrameView->SetSelectedPage(sal::static_int_cast<sal_uInt16>(mnCurrentSlideIndex));
 136         mrSlideSorter.GetController().GetPageSelector().SetCoreSelection();
 137     }
 138
 139     // We do not tell the XController/ViewShellBase about the new
 140     // slide right away.  This is done asynchronously after a short
 141     // delay to allow for more slide switches in the slide sorter.
 142     // This goes under the assumption that slide switching inside
 143     // the slide sorter is fast (no expensive redraw of the new page
 144     // (unless the preview of the new slide is not yet preset)) and
 145     // that slide switching in the edit view is slow (all shapes of
 146     // the new slide have to be repainted.)
 147     maSwitchPageDelayTimer.Start();
 148
 149     // We have to store the (index of the) new current slide at
 150     // the tab control because there are other asynchronous
 151     // notifications of the slide switching that otherwise
 152     // overwrite the correct value.
 153     SetCurrentSlideAtTabControl(mpCurrentSlide);
 154
 155     if (bUpdateSelection)
 156     {
 157         mrSlideSorter.GetController().GetPageSelector().DeselectAllPages();
 158         mrSlideSorter.GetController().GetPageSelector().SelectPage(rpDescriptor);
 159     }
 160     mrSlideSorter.GetController().GetFocusManager().SetFocusedPage(rpDescriptor);
 161 }
 162
 163 void CurrentSlideManager::SetCurrentSlideAtViewShellBase (const SharedPageDescriptor& rpDescriptor)
 164 {
 165     OSL_ASSERT(rpDescriptor.get() != nullptr);
 166
 167     ViewShellBase* pBase = mrSlideSorter.GetViewShellBase();
 168     if (pBase != nullptr)
 169     {
 170         DrawViewShell* pDrawViewShell = dynamic_cast<DrawViewShell*>(
 171             pBase->GetMainViewShell().get());
 172         if (pDrawViewShell != nullptr)
 173         {
 174             sal_uInt16 nPageNumber = (rpDescriptor->GetPage()->GetPageNum()-1)/2;
 175             pDrawViewShell->SwitchPage(nPageNumber);
 176             TabControl& rPageTabControl = pDrawViewShell->GetPageTabControl();
 177             rPageTabControl.SetCurPageId(rPageTabControl.GetPageId(nPageNumber));
 178         }
 179     }
 180 }
 181
 182 void CurrentSlideManager::SetCurrentSlideAtTabControl (const SharedPageDescriptor& rpDescriptor)
 183 {
 184     OSL_ASSERT(rpDescriptor.get() != nullptr);
 185
 186     ViewShellBase* pBase = mrSlideSorter.GetViewShellBase();
 187     if (pBase != nullptr)
 188     {
 189         std::shared_ptr<DrawViewShell> pDrawViewShell (
 190             std::dynamic_pointer_cast<DrawViewShell>(pBase->GetMainViewShell()));
 191         if (pDrawViewShell)
 192         {
 193             sal_uInt16 nPageNumber = (rpDescriptor->GetPage()->GetPageNum()-1)/2;
 194             TabControl& rPageTabControl = pDrawViewShell->GetPageTabControl();
 195             rPageTabControl.SetCurPageId(rPageTabControl.GetPageId(nPageNumber));
 196         }
 197     }
 198 }
 199
 200 void CurrentSlideManager::SetCurrentSlideAtXController (const SharedPageDescriptor& rpDescriptor)
 201 {
 202     OSL_ASSERT(rpDescriptor.get() != nullptr);
 203
 204     try
 205     {
 206         Reference<beans::XPropertySet> xSet (mrSlideSorter.GetXController(), UNO_QUERY);
 207         if (xSet.is())
 208         {
 209             Any aPage;
 210             aPage <<= rpDescriptor->GetPage()->getUnoPage();
 211             xSet->setPropertyValue( "CurrentPage", aPage );
 212         }
 213     }
 214     catch (const Exception&)
 215     {
 216         // We have not been able to set the current page at the main view.
 217         // This is sad but still leaves us in a valid state.  Therefore,
 218         // this exception is silently ignored.
 219     }
 220 }
 221
 222 void CurrentSlideManager::PrepareModelChange()
 223 {
 224     mpCurrentSlide.reset();
 225 }
 226
 227 void CurrentSlideManager::HandleModelChange()
 228 {
 229     if (mnCurrentSlideIndex >= 0)
 230     {
 231         mpCurrentSlide = mrSlideSorter.GetModel().GetPageDescriptor(mnCurrentSlideIndex);
 232         if (mpCurrentSlide.get() != nullptr)
 233             mrSlideSorter.GetView().SetState(mpCurrentSlide, PageDescriptor::ST_Current, true);
 234     }
 235 }
 236
 237 IMPL_LINK_NOARG(CurrentSlideManager, SwitchPageCallback, Timer *, void)
 238 {
 239     if (mpCurrentSlide)
 240     {
 241         // Set current page.  At the moment we have to do this in two
 242         // different ways.  The UNO way is the preferable one but, alas,
 243         // it does not work always correctly (after some kinds of model
 244         // changes).  Therefore, we call DrawViewShell::SwitchPage(),
 245         // too.
 246         ViewShell* pViewShell = mrSlideSorter.GetViewShell();
 247         if (pViewShell==nullptr || ! pViewShell->IsMainViewShell())
 248             SetCurrentSlideAtViewShellBase(mpCurrentSlide);
 249         SetCurrentSlideAtXController(mpCurrentSlide);
 250     }
 251 }
 252
 253 } } } // end of namespace ::sd::slidesorter::controller
 254
 255 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */