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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 "PresenterPreviewCache.hxx"
+
+#include <cache/SlsPageCache.hxx>
+#include <cache/SlsCacheContext.hxx>
+#include <vcl/bitmapex.hxx>
+#include <sdpage.hxx>
+#include <cppcanvas/vclfactory.hxx>
+#include <com/sun/star/drawing/XDrawPage.hpp>
+#include <osl/diagnose.h>
+
+namespace com::sun::star::uno { class XComponentContext; }
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+using namespace ::sd::slidesorter::cache;
+
+namespace sd::presenter {
+
+class PresenterPreviewCache::PresenterCacheContext : public CacheContext
+{
+public:
+ PresenterCacheContext();
+
+ void SetDocumentSlides (
+ const Reference<container::XIndexAccess>& rxSlides,
+ const Reference<XInterface>& rxDocument);
+ void SetVisibleSlideRange (
+ const sal_Int32 nFirstVisibleSlideIndex,
+ const sal_Int32 nLastVisibleSlideIndex);
+ const SdrPage* GetPage (const sal_Int32 nSlideIndex) const;
+ void AddPreviewCreationNotifyListener (const Reference<drawing::XSlidePreviewCacheListener>& rxListener);
+ void RemovePreviewCreationNotifyListener (const Reference<drawing::XSlidePreviewCacheListener>& rxListener);
+
+ // CacheContext
+ virtual void NotifyPreviewCreation (CacheKey aKey) override;
+ virtual bool IsIdle() override;
+ virtual bool IsVisible (CacheKey aKey) override;
+ virtual const SdrPage* GetPage (CacheKey aKey) override;
+ virtual std::shared_ptr<std::vector<CacheKey> > GetEntryList (bool bVisible) override;
+ virtual sal_Int32 GetPriority (CacheKey aKey) override;
+ virtual css::uno::Reference<css::uno::XInterface> GetModel() override;
+
+private:
+ Reference<container::XIndexAccess> mxSlides;
+ Reference<XInterface> mxDocument;
+ sal_Int32 mnFirstVisibleSlideIndex;
+ sal_Int32 mnLastVisibleSlideIndex;
+ typedef ::std::vector<css::uno::Reference<css::drawing::XSlidePreviewCacheListener> > ListenerContainer;
+ ListenerContainer maListeners;
+
+ void CallListeners (const sal_Int32 nSlideIndex);
+};
+
+//===== PresenterPreviewCache =================================================
+
+PresenterPreviewCache::PresenterPreviewCache ()
+ : maPreviewSize(Size(200,200)),
+ mpCacheContext(std::make_shared<PresenterCacheContext>()),
+ mpCache(std::make_shared<PageCache>(maPreviewSize, Bitmap::HasFastScale(), mpCacheContext))
+{
+}
+
+PresenterPreviewCache::~PresenterPreviewCache()
+{
+}
+
+//----- XInitialize -----------------------------------------------------------
+
+void SAL_CALL PresenterPreviewCache::initialize (const Sequence<Any>& rArguments)
+{
+ if (rArguments.hasElements())
+ throw RuntimeException();
+}
+
+//----- XSlidePreviewCache ----------------------------------------------------
+
+void SAL_CALL PresenterPreviewCache::setDocumentSlides (
+ const Reference<container::XIndexAccess>& rxSlides,
+ const Reference<XInterface>& rxDocument)
+{
+ ThrowIfDisposed();
+ OSL_ASSERT(mpCacheContext != nullptr);
+
+ mpCacheContext->SetDocumentSlides(rxSlides, rxDocument);
+}
+
+void SAL_CALL PresenterPreviewCache::setVisibleRange (
+ sal_Int32 nFirstVisibleSlideIndex,
+ sal_Int32 nLastVisibleSlideIndex)
+{
+ ThrowIfDisposed();
+ OSL_ASSERT(mpCacheContext != nullptr);
+
+ mpCacheContext->SetVisibleSlideRange (nFirstVisibleSlideIndex, nLastVisibleSlideIndex);
+}
+
+void SAL_CALL PresenterPreviewCache::setPreviewSize (
+ const css::geometry::IntegerSize2D& rSize)
+{
+ ThrowIfDisposed();
+ OSL_ASSERT(mpCache != nullptr);
+
+ maPreviewSize = Size(rSize.Width, rSize.Height);
+ mpCache->ChangeSize(maPreviewSize, Bitmap::HasFastScale());
+}
+
+Reference<rendering::XBitmap> SAL_CALL PresenterPreviewCache::getSlidePreview (
+ sal_Int32 nSlideIndex,
+ const Reference<rendering::XCanvas>& rxCanvas)
+{
+ ThrowIfDisposed();
+ OSL_ASSERT(mpCacheContext != nullptr);
+
+ cppcanvas::CanvasSharedPtr pCanvas (
+ cppcanvas::VCLFactory::createCanvas(rxCanvas));
+
+ const SdrPage* pPage = mpCacheContext->GetPage(nSlideIndex);
+ if (pPage == nullptr)
+ throw RuntimeException();
+
+ const BitmapEx aPreview (mpCache->GetPreviewBitmap(pPage,true));
+ if (aPreview.IsEmpty())
+ return nullptr;
+ else
+ return cppcanvas::VCLFactory::createBitmap(
+ pCanvas,
+ aPreview)->getUNOBitmap();
+}
+
+void SAL_CALL PresenterPreviewCache::addPreviewCreationNotifyListener (
+ const Reference<drawing::XSlidePreviewCacheListener>& rxListener)
+{
+ if (m_bDisposed)
+ return;
+ if (rxListener.is())
+ mpCacheContext->AddPreviewCreationNotifyListener(rxListener);
+}
+
+void SAL_CALL PresenterPreviewCache::removePreviewCreationNotifyListener (
+ const css::uno::Reference<css::drawing::XSlidePreviewCacheListener>& rxListener)
+{
+ ThrowIfDisposed();
+ mpCacheContext->RemovePreviewCreationNotifyListener(rxListener);
+}
+
+void SAL_CALL PresenterPreviewCache::pause()
+{
+ ThrowIfDisposed();
+ OSL_ASSERT(mpCache != nullptr);
+ mpCache->Pause();
+}
+
+void SAL_CALL PresenterPreviewCache::resume()
+{
+ ThrowIfDisposed();
+ OSL_ASSERT(mpCache != nullptr);
+ mpCache->Resume();
+}
+
+void PresenterPreviewCache::ThrowIfDisposed()
+{
+ if (m_bDisposed)
+ {
+ throw lang::DisposedException ("PresenterPreviewCache object has already been disposed",
+ static_cast<uno::XWeak*>(this));
+ }
+}
+
+//===== PresenterPreviewCache::PresenterCacheContext ==========================
+
+PresenterPreviewCache::PresenterCacheContext::PresenterCacheContext()
+ : mnFirstVisibleSlideIndex(-1),
+ mnLastVisibleSlideIndex(-1)
+{
+}
+
+void PresenterPreviewCache::PresenterCacheContext::SetDocumentSlides (
+ const Reference<container::XIndexAccess>& rxSlides,
+ const Reference<XInterface>& rxDocument)
+{
+ mxSlides = rxSlides;
+ mxDocument = rxDocument;
+ mnFirstVisibleSlideIndex = -1;
+ mnLastVisibleSlideIndex = -1;
+}
+
+void PresenterPreviewCache::PresenterCacheContext::SetVisibleSlideRange (
+ const sal_Int32 nFirstVisibleSlideIndex,
+ const sal_Int32 nLastVisibleSlideIndex)
+{
+ if (nFirstVisibleSlideIndex > nLastVisibleSlideIndex || nFirstVisibleSlideIndex<0)
+ {
+ mnFirstVisibleSlideIndex = -1;
+ mnLastVisibleSlideIndex = -1;
+ }
+ else
+ {
+ mnFirstVisibleSlideIndex = nFirstVisibleSlideIndex;
+ mnLastVisibleSlideIndex = nLastVisibleSlideIndex;
+ }
+ if (mxSlides.is() && mnLastVisibleSlideIndex >= mxSlides->getCount())
+ mnLastVisibleSlideIndex = mxSlides->getCount() - 1;
+}
+
+void PresenterPreviewCache::PresenterCacheContext::AddPreviewCreationNotifyListener (
+ const Reference<drawing::XSlidePreviewCacheListener>& rxListener)
+{
+ maListeners.push_back(rxListener);
+}
+
+void PresenterPreviewCache::PresenterCacheContext::RemovePreviewCreationNotifyListener (
+ const Reference<drawing::XSlidePreviewCacheListener>& rxListener)
+{
+ auto iListener = std::find(maListeners.begin(), maListeners.end(), rxListener);
+ if (iListener != maListeners.end())
+ maListeners.erase(iListener);
+}
+
+//----- CacheContext ----------------------------------------------------------
+
+void PresenterPreviewCache::PresenterCacheContext::NotifyPreviewCreation (
+ CacheKey aKey)
+{
+ if ( ! mxSlides.is())
+ return;
+ const sal_Int32 nCount(mxSlides->getCount());
+ for (sal_Int32 nIndex=0; nIndex<nCount; ++nIndex)
+ if (aKey == GetPage(nIndex))
+ CallListeners(nIndex);
+}
+
+bool PresenterPreviewCache::PresenterCacheContext::IsIdle()
+{
+ return true;
+}
+
+bool PresenterPreviewCache::PresenterCacheContext::IsVisible (CacheKey aKey)
+{
+ if (mnFirstVisibleSlideIndex < 0)
+ return false;
+ for (sal_Int32 nIndex=mnFirstVisibleSlideIndex; nIndex<=mnLastVisibleSlideIndex; ++nIndex)
+ {
+ const SdrPage* pPage = GetPage(nIndex);
+ if (pPage == aKey)
+ return true;
+ }
+ return false;
+}
+
+const SdrPage* PresenterPreviewCache::PresenterCacheContext::GetPage (CacheKey aKey)
+{
+ return aKey;
+}
+
+std::shared_ptr<std::vector<CacheKey> >
+ PresenterPreviewCache::PresenterCacheContext::GetEntryList (bool bVisible)
+{
+ auto pKeys = std::make_shared<std::vector<CacheKey>>();
+
+ if ( ! mxSlides.is())
+ return pKeys;
+
+ const sal_Int32 nFirstIndex (bVisible ? mnFirstVisibleSlideIndex : 0);
+ const sal_Int32 nLastIndex (bVisible ? mnLastVisibleSlideIndex : mxSlides->getCount()-1);
+
+ if (nFirstIndex < 0)
+ return pKeys;
+
+ for (sal_Int32 nIndex=nFirstIndex; nIndex<=nLastIndex; ++nIndex)
+ {
+ pKeys->push_back(GetPage(nIndex));
+ }
+
+ return pKeys;
+}
+
+sal_Int32 PresenterPreviewCache::PresenterCacheContext::GetPriority (CacheKey aKey)
+{
+ if ( ! mxSlides.is())
+ return 0;
+
+ const sal_Int32 nCount (mxSlides->getCount());
+
+ for (sal_Int32 nIndex=mnFirstVisibleSlideIndex; nIndex<=mnLastVisibleSlideIndex; ++nIndex)
+ if (aKey == GetPage(nIndex))
+ return -nCount-1+nIndex;
+
+ for (sal_Int32 nIndex=0; nIndex<=nCount; ++nIndex)
+ if (aKey == GetPage(nIndex))
+ return nIndex;
+
+ return 0;
+}
+
+Reference<XInterface> PresenterPreviewCache::PresenterCacheContext::GetModel()
+{
+ return mxDocument;
+}
+
+const SdrPage* PresenterPreviewCache::PresenterCacheContext::GetPage (
+ const sal_Int32 nSlideIndex) const
+{
+ if ( ! mxSlides.is())
+ return nullptr;
+ if (nSlideIndex < 0 || nSlideIndex >= mxSlides->getCount())
+ return nullptr;
+
+ Reference<drawing::XDrawPage> xSlide (mxSlides->getByIndex(nSlideIndex), UNO_QUERY);
+ const SdPage* pPage = SdPage::getImplementation(xSlide);
+ return pPage;
+}
+
+void PresenterPreviewCache::PresenterCacheContext::CallListeners (
+ const sal_Int32 nIndex)
+{
+ ListenerContainer aListeners (maListeners);
+ for (const auto& rxListener : aListeners)
+ {
+ try
+ {
+ rxListener->notifyPreviewCreation(nIndex);
+ }
+ catch (lang::DisposedException&)
+ {
+ RemovePreviewCreationNotifyListener(rxListener);
+ }
+ }
+}
+
+} // end of namespace ::sd::presenter
+
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+com_sun_star_comp_Draw_PresenterPreviewCache_get_implementation(css::uno::XComponentContext*,
+ css::uno::Sequence<css::uno::Any> const &)
+{
+ return cppu::acquire(new sd::presenter::PresenterPreviewCache);
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */