LibreOffice Module vcl (master)  1
impfontcache.hxx
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19 
20 #pragma once
21 
22 #include <sal/config.h>
23 
24 #include <rtl/ref.hxx>
25 #include <o3tl/lru_map.hxx>
26 #include <o3tl/hash_combine.hxx>
27 #include <tools/gen.hxx>
28 
30 #include "glyphid.hxx"
31 
32 class Size;
33 namespace vcl { class Font; }
34 namespace vcl::font { class PhysicalFontCollection; }
35 
36 // TODO: closely couple with PhysicalFontCollection
37 
39 {
42 
44  : m_pFont(pFont), m_nId(nID)
45  {}
46 
47  bool operator==(GlyphBoundRectCacheKey const& aOther) const
48  { return m_pFont == aOther.m_pFont && m_nId == aOther.m_nId; }
49 };
50 
52 {
53  std::size_t operator()(GlyphBoundRectCacheKey const& aCache) const
54  {
55  std::size_t seed = 0;
56  o3tl::hash_combine(seed, aCache.m_pFont);
57  o3tl::hash_combine(seed, aCache.m_nId);
58  return seed;
59  }
60 };
61 
64 
66 {
67 private:
68  // cache of recently used font instances
70  struct IFSD_Hash { size_t operator()( const vcl::font::FontSelectPattern& ) const; };
72 
74  FontInstanceList maFontInstanceList;
75  GlyphBoundRectCache m_aBoundRectCache;
76 
78 
79 public:
80  ImplFontCache();
82 
84  const vcl::Font&, const Size& rPixelSize, float fExactHeight, bool bNonAntialias = false);
86  LogicalFontInstance* pLogicalFont,
87  int nFallbackLevel, OUString& rMissingCodes );
88 
91 
92  void Invalidate();
93 };
94 
95 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
const LogicalFontInstance * m_pFont
o3tl::lru_map< GlyphBoundRectCacheKey, tools::Rectangle, GlyphBoundRectCacheHash > GlyphBoundRectCache
bool operator==(GlyphBoundRectCacheKey const &aOther) const
LogicalFontInstance * mpLastHitCacheEntry
keeps the last hit cache entry
bool operator()(const vcl::font::FontSelectPattern &, const vcl::font::FontSelectPattern &) const
Definition: fontcache.cxx:37
rtl::Reference< LogicalFontInstance > GetGlyphFallbackFont(vcl::font::PhysicalFontCollection const *, vcl::font::FontSelectPattern &, LogicalFontInstance *pLogicalFont, int nFallbackLevel, OUString &rMissingCodes)
Definition: fontcache.cxx:206
sal_uInt16 sal_GlyphId
Definition: glyphid.hxx:24
size_t operator()(const vcl::font::FontSelectPattern &) const
Definition: fontcache.cxx:32
const sal_GlyphId m_nId
void Invalidate()
Definition: fontcache.cxx:241
o3tl::lru_map< vcl::font::FontSelectPattern, rtl::Reference< LogicalFontInstance >, IFSD_Hash, IFSD_Equal > FontInstanceList
A PhysicalFontFaceCollection is created by a PhysicalFontCollection and becomes invalid when original...
GlyphBoundRectCacheKey(const LogicalFontInstance *pFont, sal_GlyphId nID)
std::enable_if_t<(sizeof(N)==4)> hash_combine(N &nSeed, T const *pValue, size_t nCount)
void CacheGlyphBoundRect(const LogicalFontInstance *, sal_GlyphId, tools::Rectangle &)
Definition: fontcache.cxx:268
bool GetCachedGlyphBoundRect(const LogicalFontInstance *, sal_GlyphId, tools::Rectangle &)
Definition: fontcache.cxx:251
std::size_t operator()(GlyphBoundRectCacheKey const &aCache) const
FontInstanceList maFontInstanceList
rtl::Reference< LogicalFontInstance > GetFontInstance(vcl::font::PhysicalFontCollection const *, vcl::font::FontSelectPattern &)
Definition: fontcache.cxx:112
GlyphBoundRectCache m_aBoundRectCache