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libreoffice/0001-Resolves-fdo-32665-han...

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From 58b48f188bbfd9a3382460d6de63848eb3db416d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Caol=C3=A1n=20McNamara?= <caolanm@redhat.com>
Date: Thu, 27 Oct 2011 12:24:11 +0100
Subject: [PATCH] Resolves: fdo#32665 handle that FreeSerif lacks some glyphs
in bold/italic
FreeSerif lacks glyphs in bold/italic variants that it has in the normal one. A
lot of our glyph fallback infrastructure, especially the caches don't expect
that a normal variant of a font with extra emboldening or extra font skew can
be a fallback for a bold/italic variant of itself which exists, but doesn't
have the missing glyphs that the normal one does.
We really need to improve our glyph/font caching, but we can get 90% of the
way there by excluding such cases from the caches.
---
vcl/generic/fontmanager/fontconfig.cxx | 18 ++++++++-
vcl/generic/fontmanager/fontsubst.cxx | 6 +++-
vcl/generic/glyphs/glyphcache.cxx | 7 ++++
vcl/inc/outfont.hxx | 19 ++++++++++
vcl/inc/vcl/fontmanager.hxx | 3 +-
vcl/source/gdi/outdev3.cxx | 60 ++++++++++++++++++++++----------
6 files changed, 90 insertions(+), 23 deletions(-)
diff --git a/vcl/generic/fontmanager/fontconfig.cxx b/vcl/generic/fontmanager/fontconfig.cxx
index be91349..a4f5f7f 100644
--- a/vcl/generic/fontmanager/fontconfig.cxx
+++ b/vcl/generic/fontmanager/fontconfig.cxx
@@ -68,6 +68,9 @@ using namespace psp;
#ifndef FC_EMBOLDEN
#define FC_EMBOLDEN "embolden"
#endif
+#ifndef FC_MATRIX
+ #define FC_MATRIX "matrix"
+#endif
#ifndef FC_FONTFORMAT
#define FC_FONTFORMAT "fontformat"
#endif
@@ -747,7 +750,7 @@ static void addtopattern(FcPattern *pPattern,
rtl::OUString PrintFontManager::Substitute(const rtl::OUString& rFontName,
rtl::OUString& rMissingCodes, const rtl::OString &rLangAttrib,
FontItalic &rItalic, FontWeight &rWeight,
- FontWidth &rWidth, FontPitch &rPitch) const
+ FontWidth &rWidth, FontPitch &rPitch, bool &rEmbolden, ItalicMatrix &rMatrix) const
{
rtl::OUString aName;
FontCfgWrapper& rWrapper = FontCfgWrapper::get();
@@ -834,6 +837,17 @@ rtl::OUString PrintFontManager::Substitute(const rtl::OUString& rFontName,
rPitch = convertSpacing(val);
if (FcResultMatch == FcPatternGetInteger(pSet->fonts[0], FC_WIDTH, 0, &val))
rWidth = convertWidth(val);
+ FcBool bEmbolden;
+ if (FcResultMatch == FcPatternGetBool(pSet->fonts[0], FC_EMBOLDEN, 0, &bEmbolden))
+ rEmbolden = bEmbolden;
+ FcMatrix *pMatrix = 0;
+ if (FcResultMatch == FcPatternGetMatrix(pSet->fonts[0], FC_MATRIX, 0, &pMatrix))
+ {
+ rMatrix.xx = pMatrix->xx;
+ rMatrix.xy = pMatrix->xy;
+ rMatrix.yx = pMatrix->yx;
+ rMatrix.yy = pMatrix->yy;
+ }
}
// update rMissingCodes by removing resolved unicodes
@@ -844,7 +858,7 @@ rtl::OUString PrintFontManager::Substitute(const rtl::OUString& rFontName,
FcCharSet* unicodes;
if (!FcPatternGetCharSet(pSet->fonts[0], FC_CHARSET, 0, &unicodes))
{
- for( sal_Int32 nStrIndex = 0; nStrIndex < rMissingCodes.getLength(); )
+ for( sal_Int32 nStrIndex = 0; nStrIndex < rMissingCodes.getLength(); )
{
// also handle unicode surrogates
const sal_uInt32 nCode = rMissingCodes.iterateCodePoints( &nStrIndex );
diff --git a/vcl/generic/fontmanager/fontsubst.cxx b/vcl/generic/fontmanager/fontsubst.cxx
index 3bf2d07..2d187b1 100644
--- a/vcl/generic/fontmanager/fontsubst.cxx
+++ b/vcl/generic/fontmanager/fontsubst.cxx
@@ -127,10 +127,14 @@ static ImplFontSelectData GetFcSubstitute(const ImplFontSelectData &rFontSelData
FontWeight eWeight = rFontSelData.GetWeight();
FontWidth eWidth = rFontSelData.GetWidthType();
FontPitch ePitch = rFontSelData.GetPitch();
+ bool bEmbolden = rFontSelData.mbEmbolden;
+ ItalicMatrix aMatrix = rFontSelData.maItalicMatrix;
const psp::PrintFontManager& rMgr = psp::PrintFontManager::get();
- aRet.maSearchName = rMgr.Substitute( rFontSelData.maTargetName, rMissingCodes, aLangAttrib, eItalic, eWeight, eWidth, ePitch);
+ aRet.maSearchName = rMgr.Substitute( rFontSelData.maTargetName, rMissingCodes, aLangAttrib, eItalic, eWeight, eWidth, ePitch, bEmbolden, aMatrix );
+ aRet.maItalicMatrix = aMatrix;
+ aRet.mbEmbolden = bEmbolden;
aRet.meItalic = eItalic;
aRet.meWeight = eWeight;
aRet.meWidthType = eWidth;
diff --git a/vcl/generic/glyphs/glyphcache.cxx b/vcl/generic/glyphs/glyphcache.cxx
index 5322b65..fa712bb 100644
--- a/vcl/generic/glyphs/glyphcache.cxx
+++ b/vcl/generic/glyphs/glyphcache.cxx
@@ -163,6 +163,13 @@ bool GlyphCache::IFSD_Equal::operator()( const ImplFontSelectData& rA, const Imp
!= STRING_NOTFOUND) && rA.maTargetName != rB.maTargetName)
return false;
#endif
+
+ if (rA.mbEmbolden != rB.mbEmbolden)
+ return false;
+
+ if (rA.maItalicMatrix != rB.maItalicMatrix)
+ return false;
+
return true;
}
diff --git a/vcl/inc/outfont.hxx b/vcl/inc/outfont.hxx
index faf2b00..857d944 100644
--- a/vcl/inc/outfont.hxx
+++ b/vcl/inc/outfont.hxx
@@ -156,6 +156,22 @@ friend class ImplDevFontListData;
// - ImplFontSelectData -
// ----------------------
+struct ItalicMatrix
+{
+ double xx, xy, yx, yy;
+ ItalicMatrix() : xx(1), xy(0), yx(0), yy(1) {}
+};
+
+inline bool operator ==(const ItalicMatrix& a, const ItalicMatrix& b)
+{
+ return a.xx == b.xx && a.xy == b.xy && a.yx == b.yx && a.yy == b.yy;
+}
+
+inline bool operator !=(const ItalicMatrix& a, const ItalicMatrix& b)
+{
+ return a.xx != b.xx || a.xy != b.xy || a.yx != b.yx || a.yy != b.yy;
+}
+
class ImplFontSelectData : public ImplFontAttributes
{
public:
@@ -175,6 +191,9 @@ public: // TODO: change to private
bool mbVertical; // vertical mode of requested font
bool mbNonAntialiased; // true if antialiasing is disabled
+ bool mbEmbolden; // Force emboldening
+ ItalicMatrix maItalicMatrix; // Force matrix for slant
+
const ImplFontData* mpFontData; // a matching ImplFontData object
ImplFontEntry* mpFontEntry; // pointer to the resulting FontCache entry
};
diff --git a/vcl/inc/vcl/fontmanager.hxx b/vcl/inc/vcl/fontmanager.hxx
index 0af5e14..4a110ad 100644
--- a/vcl/inc/vcl/fontmanager.hxx
+++ b/vcl/inc/vcl/fontmanager.hxx
@@ -37,6 +37,7 @@
#include "vcl/dllapi.h"
#include "vcl/helper.hxx"
#include "vcl/vclenum.hxx"
+#include "outfont.hxx"
#include "com/sun/star/lang/Locale.hpp"
#include <vector>
@@ -649,7 +650,7 @@ public:
rtl::OUString Substitute( const rtl::OUString& rFontName, rtl::OUString& rMissingCodes,
const rtl::OString& rLangAttrib, FontItalic& rItalic, FontWeight& rWeight,
- FontWidth& rWidth, FontPitch& rPitch) const;
+ FontWidth& rWidth, FontPitch& rPitch, bool &rEmboldening, ItalicMatrix &rMatrix) const;
bool hasFontconfig() const { return m_bFontconfigSuccess; }
int FreeTypeCharIndex( void *pFace, sal_uInt32 aChar );
diff --git a/vcl/source/gdi/outdev3.cxx b/vcl/source/gdi/outdev3.cxx
index b0f59cd..3cc438c 100755
--- a/vcl/source/gdi/outdev3.cxx
+++ b/vcl/source/gdi/outdev3.cxx
@@ -865,9 +865,11 @@ bool ImplFontData::IsBetterMatch( const ImplFontSelectData& rFSD, FontMatchStatu
if( rFSD.meWeight != WEIGHT_DONTKNOW )
{
- // if not bold prefer light fonts to bold fonts
- int nReqWeight = (int)rFSD.meWeight;
- if ( rFSD.meWeight > WEIGHT_MEDIUM )
+ // if not bold or requiring emboldening prefer light fonts to bold fonts
+ FontWeight ePatternWeight = rFSD.mbEmbolden ? WEIGHT_NORMAL : rFSD.meWeight;
+
+ int nReqWeight = (int)ePatternWeight;
+ if ( ePatternWeight > WEIGHT_MEDIUM )
nReqWeight += 100;
int nGivenWeight = (int)meWeight;
@@ -897,14 +899,17 @@ bool ImplFontData::IsBetterMatch( const ImplFontSelectData& rFSD, FontMatchStatu
nMatch += 150;
}
- if ( rFSD.meItalic == ITALIC_NONE )
+ // if requiring custom matrix to fake italic, prefer upright font
+ FontItalic ePatternItalic = rFSD.maItalicMatrix != ItalicMatrix() ? ITALIC_NONE : rFSD.meItalic;
+
+ if ( ePatternItalic == ITALIC_NONE )
{
if( meItalic == ITALIC_NONE )
nMatch += 900;
}
else
{
- if( rFSD.meItalic == meItalic )
+ if( ePatternItalic == meItalic )
nMatch += 900;
else if( meItalic != ITALIC_NONE )
nMatch += 600;
@@ -1457,22 +1462,31 @@ ImplDevFontListData* ImplDevFontList::GetGlyphFallbackFont( ImplFontSelectData&
else
rFontSelData.maSearchName = String();
- // cache the result even if there was no match
- for(;;)
- {
- if( !rFontSelData.mpFontEntry->GetFallbackForUnicode( cChar, rFontSelData.GetWeight(), &rFontSelData.maSearchName ) )
- rFontSelData.mpFontEntry->AddFallbackForUnicode( cChar, rFontSelData.GetWeight(), rFontSelData.maSearchName );
- if( nStrIndex >= aOldMissingCodes.getLength() )
- break;
- cChar = aOldMissingCodes.iterateCodePoints( &nStrIndex );
- }
- if( rFontSelData.maSearchName.Len() != 0 )
+ //See fdo#32665 for an example. FreeSerif that has glyphs in normal
+ //font, but not in the italic or bold version
+ bool bSubSetOfFontRequiresPropertyFaking = rFontSelData.mbEmbolden || rFontSelData.maItalicMatrix != ItalicMatrix();
+
+ // cache the result even if there was no match, unless its from part of a font for which the properties need
+ // to be faked. We need to rework this cache to take into account that fontconfig can return different fonts
+ // for different input sizes, weights, etc. Basically the cache is way to naive
+ if (!bSubSetOfFontRequiresPropertyFaking)
{
- // remove cache entries that were still not resolved
- for( nStrIndex = 0; nStrIndex < rMissingCodes.getLength(); )
+ for(;;)
{
- cChar = rMissingCodes.iterateCodePoints( &nStrIndex );
- rFontSelData.mpFontEntry->IgnoreFallbackForUnicode( cChar, rFontSelData.GetWeight(), rFontSelData.maSearchName );
+ if( !rFontSelData.mpFontEntry->GetFallbackForUnicode( cChar, rFontSelData.GetWeight(), &rFontSelData.maSearchName ) )
+ rFontSelData.mpFontEntry->AddFallbackForUnicode( cChar, rFontSelData.GetWeight(), rFontSelData.maSearchName );
+ if( nStrIndex >= aOldMissingCodes.getLength() )
+ break;
+ cChar = aOldMissingCodes.iterateCodePoints( &nStrIndex );
+ }
+ if( rFontSelData.maSearchName.Len() != 0 )
+ {
+ // remove cache entries that were still not resolved
+ for( nStrIndex = 0; nStrIndex < rMissingCodes.getLength(); )
+ {
+ cChar = rMissingCodes.iterateCodePoints( &nStrIndex );
+ rFontSelData.mpFontEntry->IgnoreFallbackForUnicode( cChar, rFontSelData.GetWeight(), rFontSelData.maSearchName );
+ }
}
}
}
@@ -2180,6 +2194,7 @@ ImplFontSelectData::ImplFontSelectData( const Font& rFont,
meLanguage( rFont.GetLanguage() ),
mbVertical( rFont.IsVertical() ),
mbNonAntialiased( false ),
+ mbEmbolden( false ),
mpFontData( NULL ),
mpFontEntry( NULL )
{
@@ -2215,6 +2230,7 @@ ImplFontSelectData::ImplFontSelectData( const ImplFontData& rFontData,
meLanguage( 0 ),
mbVertical( bVertical ),
mbNonAntialiased( false ),
+ mbEmbolden( false ),
mpFontData( &rFontData ),
mpFontEntry( NULL )
{
@@ -2297,6 +2313,12 @@ bool ImplFontCache::IFSD_Equal::operator()(const ImplFontSelectData& rA, const I
return false;
#endif
+ if (rA.mbEmbolden != rB.mbEmbolden)
+ return false;
+
+ if (rA.maItalicMatrix != rB.maItalicMatrix)
+ return false;
+
return true;
}
--
1.7.6.4
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