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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/.
+ *
+ * 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 "MasterPageContainer.hxx"
+
+#include "MasterPageContainerProviders.hxx"
+#include "MasterPageDescriptor.hxx"
+#include "MasterPageContainerFiller.hxx"
+#include "MasterPageContainerQueue.hxx"
+#include <PreviewRenderer.hxx>
+#include <tools/SdGlobalResourceContainer.hxx>
+#include <strings.hrc>
+#include <algorithm>
+#include <memory>
+
+#include <unomodel.hxx>
+#include <com/sun/star/lang/XMultiServiceFactory.hpp>
+#include <com/sun/star/uno/Reference.hxx>
+#include <com/sun/star/uno/Any.hxx>
+#include <com/sun/star/util/XCloseable.hpp>
+#include <com/sun/star/util/CloseVetoException.hpp>
+#include <comphelper/processfactory.hxx>
+#include <drawdoc.hxx>
+#include <sdpage.hxx>
+#include <sdresid.hxx>
+#include <tools/TimerBasedTaskExecution.hxx>
+#include <o3tl/safeint.hxx>
+#include <osl/mutex.hxx>
+#include <osl/getglobalmutex.hxx>
+#include <xmloff/autolayout.hxx>
+#include <tools/debug.hxx>
+#include <osl/diagnose.h>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+
+namespace {
+
+typedef ::std::vector<sd::sidebar::SharedMasterPageDescriptor> MasterPageContainerType;
+
+} // end of anonymous namespace
+
+namespace sd::sidebar {
+
+/** Inner implementation class of the MasterPageContainer.
+*/
+class MasterPageContainer::Implementation
+ : public SdGlobalResource,
+ public MasterPageContainerFiller::ContainerAdapter,
+ public MasterPageContainerQueue::ContainerAdapter
+{
+public:
+ mutable ::osl::Mutex maMutex;
+
+ static std::weak_ptr<Implementation> mpInstance;
+ MasterPageContainerType maContainer;
+
+ static std::shared_ptr<Implementation> Instance();
+
+ void LateInit();
+ void AddChangeListener (const Link<MasterPageContainerChangeEvent&,void>& rLink);
+ void RemoveChangeListener (const Link<MasterPageContainerChangeEvent&,void>& rLink);
+ void UpdatePreviewSizePixel();
+ const Size& GetPreviewSizePixel (PreviewSize eSize) const;
+
+ bool HasToken (Token aToken) const;
+ SharedMasterPageDescriptor GetDescriptor (MasterPageContainer::Token aToken) const;
+ virtual Token PutMasterPage (const SharedMasterPageDescriptor& rDescriptor) override;
+ void InvalidatePreview (Token aToken);
+ Image GetPreviewForToken (
+ Token aToken,
+ PreviewSize ePreviewSize);
+ PreviewState GetPreviewState (Token aToken) const;
+ bool RequestPreview (Token aToken);
+
+ Reference<frame::XModel> GetModel();
+ SdDrawDocument* GetDocument();
+
+ void FireContainerChange (
+ MasterPageContainerChangeEvent::EventType eType,
+ Token aToken);
+
+ virtual bool UpdateDescriptor (
+ const SharedMasterPageDescriptor& rpDescriptor,
+ bool bForcePageObject,
+ bool bForcePreview,
+ bool bSendEvents) override;
+
+ void ReleaseDescriptor (Token aToken);
+
+ /** Called by the MasterPageContainerFiller to notify that all master
+ pages from template documents have been added.
+ */
+ virtual void FillingDone() override;
+
+private:
+ Implementation();
+ virtual ~Implementation() override;
+
+ class Deleter { public:
+ void operator() (Implementation* pObject) { delete pObject; }
+ };
+ friend class Deleter;
+
+ enum class InitializationState { NotInitialized, Initializing, Initialized };
+ InitializationState meInitializationState;
+
+ std::unique_ptr<MasterPageContainerQueue> mpRequestQueue;
+ css::uno::Reference<css::frame::XModel> mxModel;
+ SdDrawDocument* mpDocument;
+ PreviewRenderer maPreviewRenderer;
+ /** Remember whether the first page object has already been used to
+ determine the correct size ratio.
+ */
+ bool mbFirstPageObjectSeen;
+
+ // The widths for the previews contain two pixels for the border that is
+ // painted around the preview.
+ static const int SMALL_PREVIEW_WIDTH = 72 + 2;
+ static const int LARGE_PREVIEW_WIDTH = 2*72 + 2;
+
+ /** This substitution of page preview shows "Preparing preview" and is
+ shown as long as the actual previews are not being present.
+ */
+ Image maLargePreviewBeingCreated;
+ Image maSmallPreviewBeingCreated;
+
+ /** This substitution of page preview is shown when a preview can not be
+ created and thus is not available.
+ */
+ Image maLargePreviewNotAvailable;
+ Image maSmallPreviewNotAvailable;
+
+ ::std::vector<Link<MasterPageContainerChangeEvent&,void>> maChangeListeners;
+
+ // We have to remember the tasks for initialization and filling in case
+ // a MasterPageContainer object is destroyed before these tasks have
+ // been completed.
+ std::weak_ptr<sd::tools::TimerBasedTaskExecution> mpFillerTask;
+
+ Size maSmallPreviewSizePixel;
+ Size maLargePreviewSizePixel;
+
+ Image GetPreviewSubstitution(TranslateId pId, PreviewSize ePreviewSize);
+
+ void CleanContainer();
+};
+
+//===== MasterPageContainer ===================================================
+
+std::weak_ptr<MasterPageContainer::Implementation>
+ MasterPageContainer::Implementation::mpInstance;
+
+std::shared_ptr<MasterPageContainer::Implementation>
+ MasterPageContainer::Implementation::Instance()
+{
+ std::shared_ptr<MasterPageContainer::Implementation> pInstance;
+
+ if (Implementation::mpInstance.expired())
+ {
+ ::osl::GetGlobalMutex aMutexFunctor;
+ ::osl::MutexGuard aGuard (aMutexFunctor());
+ if (Implementation::mpInstance.expired())
+ {
+ OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
+ pInstance = std::shared_ptr<MasterPageContainer::Implementation>(
+ new MasterPageContainer::Implementation(),
+ MasterPageContainer::Implementation::Deleter());
+ SdGlobalResourceContainer::Instance().AddResource(pInstance);
+ Implementation::mpInstance = pInstance;
+ }
+ else
+ pInstance = std::shared_ptr<MasterPageContainer::Implementation>(
+ Implementation::mpInstance);
+ }
+ else
+ {
+ OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
+ pInstance = std::shared_ptr<MasterPageContainer::Implementation>(
+ Implementation::mpInstance);
+ }
+
+ DBG_ASSERT(pInstance != nullptr,
+ "MasterPageContainer::Implementation::Instance(): instance is nullptr");
+ return pInstance;
+}
+
+MasterPageContainer::MasterPageContainer()
+ : mpImpl(Implementation::Instance()),
+ mePreviewSize(SMALL)
+{
+ mpImpl->LateInit();
+}
+
+MasterPageContainer::~MasterPageContainer()
+{
+}
+
+void MasterPageContainer::AddChangeListener (const Link<MasterPageContainerChangeEvent&,void>& rLink)
+{
+ mpImpl->AddChangeListener(rLink);
+}
+
+void MasterPageContainer::RemoveChangeListener (const Link<MasterPageContainerChangeEvent&,void>& rLink)
+{
+ mpImpl->RemoveChangeListener(rLink);
+}
+
+void MasterPageContainer::SetPreviewSize (PreviewSize eSize)
+{
+ mePreviewSize = eSize;
+ mpImpl->FireContainerChange(
+ MasterPageContainerChangeEvent::EventType::SIZE_CHANGED,
+ NIL_TOKEN);
+}
+
+Size const & MasterPageContainer::GetPreviewSizePixel() const
+{
+ return mpImpl->GetPreviewSizePixel(mePreviewSize);
+}
+
+MasterPageContainer::Token MasterPageContainer::PutMasterPage (
+ const std::shared_ptr<MasterPageDescriptor>& rDescriptor)
+{
+ return mpImpl->PutMasterPage(rDescriptor);
+}
+
+void MasterPageContainer::AcquireToken (Token aToken)
+{
+ SharedMasterPageDescriptor pDescriptor = mpImpl->GetDescriptor(aToken);
+ if (pDescriptor)
+ {
+ ++pDescriptor->mnUseCount;
+ }
+}
+
+void MasterPageContainer::ReleaseToken (Token aToken)
+{
+ SharedMasterPageDescriptor pDescriptor = mpImpl->GetDescriptor(aToken);
+ if (!pDescriptor)
+ return;
+
+ OSL_ASSERT(pDescriptor->mnUseCount>0);
+ --pDescriptor->mnUseCount;
+ if (pDescriptor->mnUseCount > 0)
+ return;
+
+ switch (pDescriptor->meOrigin)
+ {
+ case DEFAULT:
+ case TEMPLATE:
+ default:
+ break;
+
+ case MASTERPAGE:
+ mpImpl->ReleaseDescriptor(aToken);
+ break;
+ }
+}
+
+int MasterPageContainer::GetTokenCount() const
+{
+ const ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+ return mpImpl->maContainer.size();
+}
+
+bool MasterPageContainer::HasToken (Token aToken) const
+{
+ const ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+ return mpImpl->HasToken(aToken);
+}
+
+MasterPageContainer::Token MasterPageContainer::GetTokenForIndex (int nIndex)
+{
+ const ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+ Token aResult (NIL_TOKEN);
+ if (HasToken(nIndex))
+ aResult = mpImpl->maContainer[nIndex]->maToken;
+ return aResult;
+}
+
+MasterPageContainer::Token MasterPageContainer::GetTokenForURL (
+ const OUString& sURL)
+{
+ const ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+ Token aResult (NIL_TOKEN);
+ if (!sURL.isEmpty())
+ {
+ MasterPageContainerType::iterator iEntry (
+ ::std::find_if (
+ mpImpl->maContainer.begin(),
+ mpImpl->maContainer.end(),
+ MasterPageDescriptor::URLComparator(sURL)));
+ if (iEntry != mpImpl->maContainer.end())
+ aResult = (*iEntry)->maToken;
+ }
+ return aResult;
+}
+
+MasterPageContainer::Token MasterPageContainer::GetTokenForStyleName (const OUString& sStyleName)
+{
+ const ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+ Token aResult (NIL_TOKEN);
+ if (!sStyleName.isEmpty())
+ {
+ MasterPageContainerType::iterator iEntry (
+ ::std::find_if (
+ mpImpl->maContainer.begin(),
+ mpImpl->maContainer.end(),
+ MasterPageDescriptor::StyleNameComparator(sStyleName)));
+ if (iEntry != mpImpl->maContainer.end())
+ aResult = (*iEntry)->maToken;
+ }
+ return aResult;
+}
+
+MasterPageContainer::Token MasterPageContainer::GetTokenForPageObject (
+ const SdPage* pPage)
+{
+ const ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+ Token aResult (NIL_TOKEN);
+ if (pPage != nullptr)
+ {
+ MasterPageContainerType::iterator iEntry (
+ ::std::find_if (
+ mpImpl->maContainer.begin(),
+ mpImpl->maContainer.end(),
+ MasterPageDescriptor::PageObjectComparator(pPage)));
+ if (iEntry != mpImpl->maContainer.end())
+ aResult = (*iEntry)->maToken;
+ }
+ return aResult;
+}
+
+OUString MasterPageContainer::GetURLForToken (
+ MasterPageContainer::Token aToken)
+{
+ const ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+ SharedMasterPageDescriptor pDescriptor = mpImpl->GetDescriptor(aToken);
+ if (pDescriptor)
+ return pDescriptor->msURL;
+ else
+ return OUString();
+}
+
+OUString MasterPageContainer::GetPageNameForToken (
+ MasterPageContainer::Token aToken)
+{
+ const ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+ SharedMasterPageDescriptor pDescriptor = mpImpl->GetDescriptor(aToken);
+ if (pDescriptor)
+ return pDescriptor->msPageName;
+ else
+ return OUString();
+}
+
+OUString MasterPageContainer::GetStyleNameForToken (
+ MasterPageContainer::Token aToken)
+{
+ const ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+ SharedMasterPageDescriptor pDescriptor = mpImpl->GetDescriptor(aToken);
+ if (pDescriptor)
+ return pDescriptor->msStyleName;
+ else
+ return OUString();
+}
+
+SdPage* MasterPageContainer::GetPageObjectForToken (
+ MasterPageContainer::Token aToken,
+ bool bLoad)
+{
+ const ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+ SdPage* pPageObject = nullptr;
+ SharedMasterPageDescriptor pDescriptor = mpImpl->GetDescriptor(aToken);
+ if (pDescriptor)
+ {
+ pPageObject = pDescriptor->mpMasterPage;
+ if (pPageObject == nullptr)
+ {
+ // The page object is not (yet) present. Call
+ // UpdateDescriptor() to trigger the PageObjectProvider() to
+ // provide it.
+ if (bLoad)
+ mpImpl->GetModel();
+ if (mpImpl->UpdateDescriptor(pDescriptor,bLoad,false, true))
+ pPageObject = pDescriptor->mpMasterPage;
+ }
+ }
+ return pPageObject;
+}
+
+MasterPageContainer::Origin MasterPageContainer::GetOriginForToken (Token aToken)
+{
+ const ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+ SharedMasterPageDescriptor pDescriptor = mpImpl->GetDescriptor(aToken);
+ if (pDescriptor)
+ return pDescriptor->meOrigin;
+ else
+ return UNKNOWN;
+}
+
+sal_Int32 MasterPageContainer::GetTemplateIndexForToken (Token aToken)
+{
+ const ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+ SharedMasterPageDescriptor pDescriptor = mpImpl->GetDescriptor(aToken);
+ if (pDescriptor)
+ return pDescriptor->mnTemplateIndex;
+ else
+ return -1;
+}
+
+std::shared_ptr<MasterPageDescriptor> MasterPageContainer::GetDescriptorForToken (
+ MasterPageContainer::Token aToken)
+{
+ const ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+ return mpImpl->GetDescriptor(aToken);
+}
+
+void MasterPageContainer::InvalidatePreview (MasterPageContainer::Token aToken)
+{
+ mpImpl->InvalidatePreview(aToken);
+}
+
+Image MasterPageContainer::GetPreviewForToken (MasterPageContainer::Token aToken)
+{
+ return mpImpl->GetPreviewForToken(aToken,mePreviewSize);
+}
+
+MasterPageContainer::PreviewState MasterPageContainer::GetPreviewState (Token aToken)
+{
+ return mpImpl->GetPreviewState(aToken);
+}
+
+bool MasterPageContainer::RequestPreview (Token aToken)
+{
+ return mpImpl->RequestPreview(aToken);
+}
+
+//==== Implementation ================================================
+
+MasterPageContainer::Implementation::Implementation()
+ : meInitializationState(InitializationState::NotInitialized),
+ mpDocument(nullptr),
+ mbFirstPageObjectSeen(false)
+{
+ UpdatePreviewSizePixel();
+}
+
+MasterPageContainer::Implementation::~Implementation()
+{
+ // When the initializer or filler tasks are still running then we have
+ // to stop them now in order to prevent them from calling us back.
+ tools::TimerBasedTaskExecution::ReleaseTask(mpFillerTask);
+
+ mpRequestQueue.reset();
+
+ uno::Reference<util::XCloseable> xCloseable (mxModel, uno::UNO_QUERY);
+ if (xCloseable.is())
+ {
+ try
+ {
+ xCloseable->close(true);
+ }
+ catch (const css::util::CloseVetoException&)
+ {
+ }
+ }
+ mxModel = nullptr;
+}
+
+void MasterPageContainer::Implementation::LateInit()
+{
+ const ::osl::MutexGuard aGuard (maMutex);
+
+ if (meInitializationState != InitializationState::NotInitialized)
+ return;
+
+ meInitializationState = InitializationState::Initializing;
+
+ OSL_ASSERT(Instance().get()==this);
+ mpRequestQueue.reset(MasterPageContainerQueue::Create(
+ std::shared_ptr<MasterPageContainerQueue::ContainerAdapter>(Instance())));
+
+ mpFillerTask = ::sd::tools::TimerBasedTaskExecution::Create(
+ std::make_shared<MasterPageContainerFiller>(*this),
+ 5,
+ 50);
+
+ meInitializationState = InitializationState::Initialized;
+}
+
+void MasterPageContainer::Implementation::AddChangeListener (const Link<MasterPageContainerChangeEvent&,void>& rLink)
+{
+ const ::osl::MutexGuard aGuard (maMutex);
+
+ ::std::vector<Link<MasterPageContainerChangeEvent&,void>>::iterator iListener (
+ ::std::find(maChangeListeners.begin(),maChangeListeners.end(),rLink));
+ if (iListener == maChangeListeners.end())
+ maChangeListeners.push_back(rLink);
+
+}
+
+void MasterPageContainer::Implementation::RemoveChangeListener (const Link<MasterPageContainerChangeEvent&,void>& rLink)
+{
+ const ::osl::MutexGuard aGuard (maMutex);
+
+ ::std::vector<Link<MasterPageContainerChangeEvent&,void>>::iterator iListener (
+ ::std::find(maChangeListeners.begin(),maChangeListeners.end(),rLink));
+ if (iListener != maChangeListeners.end())
+ maChangeListeners.erase(iListener);
+}
+
+void MasterPageContainer::Implementation::UpdatePreviewSizePixel()
+{
+ const ::osl::MutexGuard aGuard (maMutex);
+
+ // The default aspect ratio is 4:3
+ int nWidth (4);
+ int nHeight (3);
+
+ // Search for the first entry with an existing master page.
+ auto iDescriptor = std::find_if(maContainer.begin(), maContainer.end(),
+ [](const SharedMasterPageDescriptor& rxDescriptor) {
+ return rxDescriptor != nullptr && rxDescriptor->mpMasterPage != nullptr;
+ });
+ if (iDescriptor != maContainer.end())
+ {
+ Size aPageSize ((*iDescriptor)->mpMasterPage->GetSize());
+ OSL_ASSERT(!aPageSize.IsEmpty());
+ if (aPageSize.Width() > 0)
+ nWidth = aPageSize.Width();
+ if (aPageSize.Height() > 0)
+ nHeight = aPageSize.Height();
+ mbFirstPageObjectSeen = true;
+ }
+
+ maSmallPreviewSizePixel.setWidth( SMALL_PREVIEW_WIDTH );
+ maLargePreviewSizePixel.setWidth( LARGE_PREVIEW_WIDTH );
+
+ int nNewSmallHeight ((maSmallPreviewSizePixel.Width()-2) * nHeight / nWidth + 2);
+ int nNewLargeHeight ((maLargePreviewSizePixel.Width()-2) * nHeight / nWidth + 2);
+
+ if (nNewSmallHeight!=maSmallPreviewSizePixel.Height()
+ || nNewLargeHeight!=maLargePreviewSizePixel.Height())
+ {
+ maSmallPreviewSizePixel.setHeight( nNewSmallHeight );
+ maLargePreviewSizePixel.setHeight( nNewLargeHeight );
+ FireContainerChange(
+ MasterPageContainerChangeEvent::EventType::SIZE_CHANGED,
+ NIL_TOKEN);
+ }
+}
+
+const Size& MasterPageContainer::Implementation::GetPreviewSizePixel (PreviewSize eSize) const
+{
+ if (eSize == SMALL)
+ return maSmallPreviewSizePixel;
+ else
+ return maLargePreviewSizePixel;
+}
+
+MasterPageContainer::Token MasterPageContainer::Implementation::PutMasterPage (
+ const SharedMasterPageDescriptor& rpDescriptor)
+{
+ const ::osl::MutexGuard aGuard (maMutex);
+
+ Token aResult (NIL_TOKEN);
+
+ // Get page object and preview when that is inexpensive.
+ UpdateDescriptor(rpDescriptor,false,false, false);
+
+ // Look up the new MasterPageDescriptor and either insert it or update
+ // an already existing one.
+ MasterPageContainerType::iterator aEntry (
+ ::std::find_if (
+ maContainer.begin(),
+ maContainer.end(),
+ MasterPageDescriptor::AllComparator(rpDescriptor)));
+ if (aEntry == maContainer.end())
+ {
+ // Insert a new MasterPageDescriptor.
+ bool bIgnore(rpDescriptor->mpPageObjectProvider == nullptr
+ && rpDescriptor->msURL.isEmpty());
+
+ if ( ! bIgnore)
+ {
+ CleanContainer();
+
+ aResult = maContainer.size();
+ rpDescriptor->SetToken(aResult);
+
+ // Templates are precious, i.e. we lock them so that they will
+ // not be destroyed when (temporarily) no one references them.
+ // They will only be deleted when the container is destroyed.
+ switch (rpDescriptor->meOrigin)
+ {
+ case TEMPLATE:
+ case DEFAULT:
+ ++rpDescriptor->mnUseCount;
+ break;
+
+ default:
+ break;
+ }
+
+ maContainer.push_back(rpDescriptor);
+ aEntry = maContainer.end()-1;
+
+ FireContainerChange(MasterPageContainerChangeEvent::EventType::CHILD_ADDED,aResult);
+ }
+ }
+ else
+ {
+ // Update an existing MasterPageDescriptor.
+ aResult = (*aEntry)->maToken;
+ std::unique_ptr<std::vector<MasterPageContainerChangeEvent::EventType> > pEventTypes(
+ (*aEntry)->Update(*rpDescriptor));
+ if (pEventTypes != nullptr && !pEventTypes->empty())
+ {
+ // One or more aspects of the descriptor have changed. Send
+ // appropriate events to the listeners.
+ UpdateDescriptor(*aEntry,false,false, true);
+
+ for (const auto& rEventType : *pEventTypes)
+ {
+ FireContainerChange(rEventType, (*aEntry)->maToken);
+ }
+ }
+ }
+
+ return aResult;
+}
+
+bool MasterPageContainer::Implementation::HasToken (Token aToken) const
+{
+ return aToken>=0
+ && o3tl::make_unsigned(aToken)<maContainer.size()
+ && maContainer[aToken];
+}
+
+SharedMasterPageDescriptor MasterPageContainer::Implementation::GetDescriptor (Token aToken) const
+{
+ if (aToken>=0 && o3tl::make_unsigned(aToken)<maContainer.size())
+ return maContainer[aToken];
+ else
+ return SharedMasterPageDescriptor();
+}
+
+void MasterPageContainer::Implementation::InvalidatePreview (Token aToken)
+{
+ const ::osl::MutexGuard aGuard (maMutex);
+
+ SharedMasterPageDescriptor pDescriptor (GetDescriptor(aToken));
+ if (pDescriptor)
+ {
+ pDescriptor->maSmallPreview = Image();
+ pDescriptor->maLargePreview = Image();
+ RequestPreview(aToken);
+ }
+}
+
+Image MasterPageContainer::Implementation::GetPreviewForToken (
+ MasterPageContainer::Token aToken,
+ PreviewSize ePreviewSize)
+{
+ const ::osl::MutexGuard aGuard (maMutex);
+
+ Image aPreview;
+ PreviewState ePreviewState (GetPreviewState(aToken));
+
+ SharedMasterPageDescriptor pDescriptor = GetDescriptor(aToken);
+
+ // When the preview is missing but inexpensively creatable then do that
+ // now.
+ if (pDescriptor)
+ {
+ if (ePreviewState == PS_CREATABLE)
+ if (UpdateDescriptor(pDescriptor, false,false, true))
+ if (pDescriptor->maLargePreview.GetSizePixel().Width() != 0)
+ ePreviewState = PS_AVAILABLE;
+
+ switch (ePreviewState)
+ {
+ case PS_AVAILABLE:
+ aPreview = pDescriptor->GetPreview(ePreviewSize);
+ break;
+
+ case PS_PREPARING:
+ aPreview = GetPreviewSubstitution(
+ STR_TASKPANEL_PREPARING_PREVIEW_SUBSTITUTION,
+ ePreviewSize);
+ break;
+
+ case PS_CREATABLE:
+ aPreview = GetPreviewSubstitution(
+ STR_TASKPANEL_PREPARING_PREVIEW_SUBSTITUTION,
+ ePreviewSize);
+ break;
+
+ case PS_NOT_AVAILABLE:
+ aPreview = GetPreviewSubstitution(
+ STR_TASKPANEL_NOT_AVAILABLE_SUBSTITUTION,
+ ePreviewSize);
+ if (ePreviewSize == SMALL)
+ pDescriptor->maSmallPreview = aPreview;
+ else
+ pDescriptor->maLargePreview = aPreview;
+ break;
+ }
+ }
+
+ return aPreview;
+}
+
+MasterPageContainer::PreviewState MasterPageContainer::Implementation::GetPreviewState (
+ Token aToken) const
+{
+ const ::osl::MutexGuard aGuard (maMutex);
+
+ PreviewState eState (PS_NOT_AVAILABLE);
+
+ SharedMasterPageDescriptor pDescriptor = GetDescriptor(aToken);
+ if (pDescriptor)
+ {
+ if (pDescriptor->maLargePreview.GetSizePixel().Width() != 0)
+ eState = PS_AVAILABLE;
+ else if (pDescriptor->mpPreviewProvider != nullptr)
+ {
+ // The preview does not exist but can be created. When that is
+ // not expensive then do it at once.
+ if (mpRequestQueue->HasRequest(aToken))
+ eState = PS_PREPARING;
+ else
+ eState = PS_CREATABLE;
+ }
+ else
+ eState = PS_NOT_AVAILABLE;
+ }
+
+ return eState;
+}
+
+bool MasterPageContainer::Implementation::RequestPreview (Token aToken)
+{
+ SharedMasterPageDescriptor pDescriptor = GetDescriptor(aToken);
+ if (pDescriptor)
+ return mpRequestQueue->RequestPreview(pDescriptor);
+ else
+ return false;
+}
+
+Reference<frame::XModel> MasterPageContainer::Implementation::GetModel()
+{
+ const ::osl::MutexGuard aGuard (maMutex);
+
+ if ( ! mxModel.is())
+ {
+ // Create a new model.
+ mxModel.set(
+ ::comphelper::getProcessServiceFactory()->createInstance(
+ "com.sun.star.presentation.PresentationDocument"),
+ uno::UNO_QUERY);
+
+ // Initialize the model.
+ uno::Reference<frame::XLoadable> xLoadable (mxModel,uno::UNO_QUERY);
+ if (xLoadable.is())
+ xLoadable->initNew();
+
+ // Use its tunnel to get a pointer to its core implementation.
+ uno::Reference<lang::XUnoTunnel> xUnoTunnel (mxModel, uno::UNO_QUERY);
+ if (auto pSdXImpressDocument = comphelper::getFromUnoTunnel<SdXImpressDocument>(xUnoTunnel))
+ {
+ mpDocument = pSdXImpressDocument->GetDoc();
+ }
+
+ // Create a default page.
+ uno::Reference<drawing::XDrawPagesSupplier> xSlideSupplier (mxModel, uno::UNO_QUERY);
+ if (xSlideSupplier.is())
+ {
+ uno::Reference<drawing::XDrawPages> xSlides =
+ xSlideSupplier->getDrawPages();
+ if (xSlides.is())
+ {
+ uno::Reference<drawing::XDrawPage> xNewPage (xSlides->insertNewByIndex(0));
+ uno::Reference<beans::XPropertySet> xProperties(xNewPage, uno::UNO_QUERY);
+ if (xProperties.is())
+ xProperties->setPropertyValue(
+ "Layout",
+ Any(sal_Int16(AUTOLAYOUT_TITLE)));
+ }
+ }
+ }
+ return mxModel;
+}
+
+SdDrawDocument* MasterPageContainer::Implementation::GetDocument()
+{
+ GetModel();
+ return mpDocument;
+}
+
+Image MasterPageContainer::Implementation::GetPreviewSubstitution (
+ TranslateId pId,
+ PreviewSize ePreviewSize)
+{
+ const ::osl::MutexGuard aGuard (maMutex);
+
+ Image aPreview;
+
+ if (pId == STR_TASKPANEL_PREPARING_PREVIEW_SUBSTITUTION)
+ {
+ Image& rPreview (ePreviewSize==SMALL
+ ? maSmallPreviewBeingCreated
+ : maLargePreviewBeingCreated);
+ if (rPreview.GetSizePixel().Width() == 0)
+ {
+ rPreview = maPreviewRenderer.RenderSubstitution(
+ ePreviewSize==SMALL ? maSmallPreviewSizePixel : maLargePreviewSizePixel,
+ SdResId(STR_TASKPANEL_PREPARING_PREVIEW_SUBSTITUTION));
+ }
+ aPreview = rPreview;
+ }
+ else if (pId == STR_TASKPANEL_NOT_AVAILABLE_SUBSTITUTION)
+ {
+ Image& rPreview (ePreviewSize==SMALL
+ ? maSmallPreviewNotAvailable
+ : maLargePreviewNotAvailable);
+ if (rPreview.GetSizePixel().Width() == 0)
+ {
+ rPreview = maPreviewRenderer.RenderSubstitution(
+ ePreviewSize==SMALL ? maSmallPreviewSizePixel : maLargePreviewSizePixel,
+ SdResId(STR_TASKPANEL_NOT_AVAILABLE_SUBSTITUTION));
+ }
+ aPreview = rPreview;
+ }
+
+ return aPreview;
+}
+
+void MasterPageContainer::Implementation::CleanContainer()
+{
+ // Remove the empty elements at the end of the container. The empty
+ // elements in the middle can not be removed because that would
+ // invalidate the references still held by others.
+ int nIndex (maContainer.size()-1);
+ while (nIndex>=0 && !maContainer[nIndex])
+ --nIndex;
+ maContainer.resize(++nIndex);
+}
+
+void MasterPageContainer::Implementation::FireContainerChange (
+ MasterPageContainerChangeEvent::EventType eType,
+ Token aToken)
+{
+ ::std::vector<Link<MasterPageContainerChangeEvent&,void>> aCopy(maChangeListeners);
+ MasterPageContainerChangeEvent aEvent;
+ aEvent.meEventType = eType;
+ aEvent.maChildToken = aToken;
+ for (const auto& rListener : aCopy)
+ rListener.Call(aEvent);
+}
+
+bool MasterPageContainer::Implementation::UpdateDescriptor (
+ const SharedMasterPageDescriptor& rpDescriptor,
+ bool bForcePageObject,
+ bool bForcePreview,
+ bool bSendEvents)
+{
+ const ::osl::MutexGuard aGuard (maMutex);
+
+ // We have to create the page object when the preview provider needs it
+ // and the caller needs the preview.
+ bForcePageObject |= (bForcePreview
+ && rpDescriptor->mpPreviewProvider->NeedsPageObject()
+ && rpDescriptor->mpMasterPage==nullptr);
+
+ // Define a cost threshold so that an update or page object or preview
+ // that is at least this cost are made at once. Updates with higher cost
+ // are scheduled for later.
+ sal_Int32 nCostThreshold (mpRequestQueue->IsEmpty() ? 5 : 0);
+
+ // Update the page object (which may be used for the preview update).
+ if (bForcePageObject)
+ GetDocument();
+ int nPageObjectModified (rpDescriptor->UpdatePageObject(
+ (bForcePageObject ? -1 : nCostThreshold),
+ mpDocument));
+ if (nPageObjectModified == 1 && bSendEvents)
+ FireContainerChange(
+ MasterPageContainerChangeEvent::EventType::DATA_CHANGED,
+ rpDescriptor->maToken);
+ if (nPageObjectModified == -1 && bSendEvents)
+ FireContainerChange(
+ MasterPageContainerChangeEvent::EventType::CHILD_REMOVED,
+ rpDescriptor->maToken);
+ if (nPageObjectModified && ! mbFirstPageObjectSeen)
+ UpdatePreviewSizePixel();
+
+ // Update the preview.
+ bool bPreviewModified (rpDescriptor->UpdatePreview(
+ (bForcePreview ? -1 : nCostThreshold),
+ maSmallPreviewSizePixel,
+ maLargePreviewSizePixel,
+ maPreviewRenderer));
+
+ if (bPreviewModified && bSendEvents)
+ FireContainerChange(
+ MasterPageContainerChangeEvent::EventType::PREVIEW_CHANGED,
+ rpDescriptor->maToken);
+
+ return nPageObjectModified || bPreviewModified;
+}
+
+void MasterPageContainer::Implementation::ReleaseDescriptor (Token aToken)
+{
+ if (aToken>=0 && o3tl::make_unsigned(aToken)<maContainer.size())
+ {
+ maContainer[aToken].reset();
+ }
+}
+
+void MasterPageContainer::Implementation::FillingDone()
+{
+ mpRequestQueue->ProcessAllRequests();
+}
+
+} // end of namespace sd::sidebar
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */