95 lines
3.5 KiB
C++
95 lines
3.5 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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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#pragma once
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#include <sal/config.h>
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#include <basegfx/range/b2drectangle.hxx>
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#include <rtl/ref.hxx>
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#include <o3tl/lru_map.hxx>
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#include <o3tl/hash_combine.hxx>
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#include "font/FontSelectPattern.hxx"
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#include "glyphid.hxx"
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class Size;
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namespace vcl { class Font; }
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namespace vcl::font { class PhysicalFontCollection; }
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// TODO: closely couple with PhysicalFontCollection
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struct GlyphBoundRectCacheKey
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{
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const LogicalFontInstance* m_pFont;
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const sal_GlyphId m_nId;
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GlyphBoundRectCacheKey(const LogicalFontInstance* pFont, sal_GlyphId nID)
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: m_pFont(pFont), m_nId(nID)
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{}
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bool operator==(GlyphBoundRectCacheKey const& aOther) const
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{ return m_pFont == aOther.m_pFont && m_nId == aOther.m_nId; }
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};
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struct GlyphBoundRectCacheHash
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{
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std::size_t operator()(GlyphBoundRectCacheKey const& aCache) const
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{
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std::size_t seed = 0;
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o3tl::hash_combine(seed, aCache.m_pFont);
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o3tl::hash_combine(seed, aCache.m_nId);
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return seed;
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}
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};
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typedef o3tl::lru_map<GlyphBoundRectCacheKey, basegfx::B2DRectangle,
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GlyphBoundRectCacheHash> GlyphBoundRectCache;
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class ImplFontCache
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{
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private:
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// cache of recently used font instances
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struct IFSD_Equal { bool operator()( const vcl::font::FontSelectPattern&, const vcl::font::FontSelectPattern& ) const; };
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struct IFSD_Hash { size_t operator()( const vcl::font::FontSelectPattern& ) const; };
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typedef o3tl::lru_map<vcl::font::FontSelectPattern, rtl::Reference<LogicalFontInstance>, IFSD_Hash, IFSD_Equal> FontInstanceList;
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LogicalFontInstance* mpLastHitCacheEntry; ///< keeps the last hit cache entry
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FontInstanceList maFontInstanceList;
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GlyphBoundRectCache m_aBoundRectCache;
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rtl::Reference<LogicalFontInstance> GetFontInstance(vcl::font::PhysicalFontCollection const*, vcl::font::FontSelectPattern&);
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public:
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ImplFontCache();
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~ImplFontCache();
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rtl::Reference<LogicalFontInstance> GetFontInstance(vcl::font::PhysicalFontCollection const *,
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const vcl::Font&, const Size& rPixelSize, float fExactHeight, bool bNonAntialias = false);
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rtl::Reference<LogicalFontInstance> GetGlyphFallbackFont( vcl::font::PhysicalFontCollection const *, vcl::font::FontSelectPattern&,
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LogicalFontInstance* pLogicalFont,
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int nFallbackLevel, OUString& rMissingCodes );
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bool GetCachedGlyphBoundRect(const LogicalFontInstance*, sal_GlyphId, basegfx::B2DRectangle&);
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void CacheGlyphBoundRect(const LogicalFontInstance*, sal_GlyphId, basegfx::B2DRectangle&);
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void Invalidate();
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};
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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