127 lines
4.8 KiB
C++
127 lines
4.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#pragma once
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#include <sal/types.h>
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#include <basegfx/basegfxdllapi.h>
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#include <memory>
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#include <unordered_map>
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namespace basegfx
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{
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class SystemDependentData;
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typedef std::shared_ptr<SystemDependentData> SystemDependentData_SharedPtr;
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typedef std::weak_ptr<SystemDependentData> SystemDependentData_WeakPtr;
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class BASEGFX_DLLPUBLIC SystemDependentDataManager
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{
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private:
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// noncopyable
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SystemDependentDataManager(const SystemDependentDataManager&) = delete;
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SystemDependentDataManager& operator=(const SystemDependentDataManager&) = delete;
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public:
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SystemDependentDataManager();
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virtual ~SystemDependentDataManager();
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// call from (and with) SystemDependentData objects when start/end/touch
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// usage is needed
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virtual void startUsage(basegfx::SystemDependentData_SharedPtr& rData) = 0;
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virtual void endUsage(basegfx::SystemDependentData_SharedPtr& rData) = 0;
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virtual void touchUsage(basegfx::SystemDependentData_SharedPtr& rData) = 0;
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// flush all buffered data (e.g. cleanup/shutdown)
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virtual void flushAll() = 0;
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};
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// (S)ystem(D)ependent(D)ata_Type
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enum class BASEGFX_DLLPUBLIC SDD_Type : sal_uInt16 {
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SDDType_CairoPathGeometry,
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SDDType_CairoSurface,
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SDDType_ID2D1PathGeometry,
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SDDType_ID2D1Bitmap,
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SDDType_BitmapHelper,
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SDDType_MaskHelper,
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SDDType_CairoPath,
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SDDType_ModifiedBitmapEx,
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SDDType_GraphicsPath,
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SDDType_GdiPlusBitmap
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};
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class BASEGFX_DLLPUBLIC SystemDependentData
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{
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private:
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// noncopyable
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SystemDependentData(const SystemDependentData&) = delete;
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SystemDependentData& operator=(const SystemDependentData&) = delete;
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// reference to a SystemDependentDataManager, probably
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// a single, globally used one, but not necessarily
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SystemDependentDataManager& mrSystemDependentDataManager;
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// Type identifier
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SDD_Type maSystemDependentDataType;
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// Buffered CalculatedCycles, result of estimations using
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// getHoldCyclesInSeconds and estimateUsageInBytes, executed
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// using getHoldCyclesInSeconds. StartValue is 0 to detect
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// not-yet-calculated state
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sal_uInt32 mnCalculatedCycles;
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public:
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SystemDependentData(
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SystemDependentDataManager& rSystemDependentDataManager,
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SDD_Type aSystemDependentDataType);
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virtual ~SystemDependentData();
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// allow access to call startUsage/endUsage/touchUsage
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// using getSystemDependentDataManager()
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SystemDependentDataManager& getSystemDependentDataManager() { return mrSystemDependentDataManager; }
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// read access to SDD_Type
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SDD_Type getSystemDependentDataType() const { return maSystemDependentDataType; }
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// Calculate HoldCyclesInSeconds based on using
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// getHoldCyclesInSeconds and estimateUsageInBytes, the
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// result is created once on-demand and buffered in
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// mnCalculatedCycles
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sal_uInt32 calculateCombinedHoldCyclesInSeconds() const;
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// Allow read access to the calculated cycles in seconds, this
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// can be e.g. used to determine if this instance got added
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sal_uInt32 getCombinedHoldCyclesInSeconds() const { return mnCalculatedCycles; }
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// Size estimation of the entry in bytes - does not have to
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// be used, but should be. Default returns zero what
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// means there is no size estimation available. Override to
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// offer useful data if you want to have better caching.
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virtual sal_Int64 estimateUsageInBytes() const;
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};
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class BASEGFX_DLLPUBLIC SystemDependentDataHolder
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{
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private:
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// Possibility to hold System-Dependent B2DPolygon-Representations
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std::unordered_map< SDD_Type, SystemDependentData_WeakPtr > maSystemDependentReferences;
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// noncopyable
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SystemDependentDataHolder(const SystemDependentDataHolder&) = delete;
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SystemDependentDataHolder& operator=(const SystemDependentDataHolder&) = delete;
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public:
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SystemDependentDataHolder();
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virtual ~SystemDependentDataHolder();
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void addOrReplaceSystemDependentData(SystemDependentData_SharedPtr& rData);
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SystemDependentData_SharedPtr getSystemDependentData(SDD_Type aType) const;
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};
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} // end of namespace basegfx
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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