diff options
Diffstat (limited to 'sd/source/ui/presenter/PresenterPreviewCache.cxx')
| -rw-r--r-- | sd/source/ui/presenter/PresenterPreviewCache.cxx | 360 |
1 files changed, 360 insertions, 0 deletions
diff --git a/sd/source/ui/presenter/PresenterPreviewCache.cxx b/sd/source/ui/presenter/PresenterPreviewCache.cxx new file mode 100644 index 000000000..fd29cdbfa --- /dev/null +++ b/sd/source/ui/presenter/PresenterPreviewCache.cxx @@ -0,0 +1,360 @@ +/* -*- 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: */ |