diff options
Diffstat (limited to 'vcl/unx/source/gdi/xfont.cxx')
| -rw-r--r-- | vcl/unx/source/gdi/xfont.cxx | 780 |
1 files changed, 0 insertions, 780 deletions
diff --git a/vcl/unx/source/gdi/xfont.cxx b/vcl/unx/source/gdi/xfont.cxx deleted file mode 100644 index f6d19909cd4a..000000000000 --- a/vcl/unx/source/gdi/xfont.cxx +++ /dev/null @@ -1,780 +0,0 @@ -/************************************************************************* - * - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * Copyright 2000, 2010 Oracle and/or its affiliates. - * - * OpenOffice.org - a multi-platform office productivity suite - * - * This file is part of OpenOffice.org. - * - * OpenOffice.org is free software: you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License version 3 - * only, as published by the Free Software Foundation. - * - * OpenOffice.org is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License version 3 for more details - * (a copy is included in the LICENSE file that accompanied this code). - * - * You should have received a copy of the GNU Lesser General Public License - * version 3 along with OpenOffice.org. If not, see - * <http://www.openoffice.org/license.html> - * for a copy of the LGPLv3 License. - * - ************************************************************************/ - -// MARKER(update_precomp.py): autogen include statement, do not remove -#include "precompiled_vcl.hxx" - -#include <salunx.h> -#include "xfont.hxx" -#include "xlfd_extd.hxx" -#include "salcvt.hxx" -#include <tools/string.hxx> -#include <vcl/outfont.hxx> -#include <saldisp.hxx> -#include <salgdi.h> - -// for GetMirroredChar -#include <vcl/svapp.hxx> - -#if OSL_DEBUG_LEVEL > 1 -#include <cstdio> -#endif - -#include <algorithm> - -#define VCLASS_ROTATE 0 -#define VCLASS_ROTATE_REVERSE 1 -#define VCLASS_TRANSFORM1 2 -#define VCLASS_TRANSFORM2 3 -#define VCLASS_CJK 4 -#define VCLASS_DONTKNOW 5 -#define VCLASS_FONT_NUM 2 // Other than rotate and rotate_reverse, - // don't have spacial font - -// Select the max size of a font, which is token for real -// This routine is (and should be) called only once, the result should be -// stored in some static variable - -static int GetMaxFontHeight() -{ - static int nMaxFontHeight = 0; - if( nMaxFontHeight <= 0 ) - { - const char *pFontHeight = getenv ("SAL_MAXFONTHEIGHT"); - if( pFontHeight ) - nMaxFontHeight = atoi( pFontHeight ); - static const int DEFAULT_MAXFONTHEIGHT = 250; - if (nMaxFontHeight <= 20) - nMaxFontHeight = DEFAULT_MAXFONTHEIGHT; - } - - return nMaxFontHeight; -} - - -ExtendedFontStruct::ExtendedFontStruct( Display* pDisplay, const Size& rPixelSize, - sal_Bool bVertical, ExtendedXlfd* pXlfd ) : - mpDisplay( pDisplay ), - maPixelSize( rPixelSize ), - mfXScale(1.0), mfYScale(1.0), - mbVertical( bVertical ), - mnCachedEncoding( RTL_TEXTENCODING_DONTKNOW ), - mpXlfd( pXlfd ), - mpRangeCodes(NULL), - mnRangeCount(-1) -{ - if( !maPixelSize.Width() ) - maPixelSize.Width() = maPixelSize.Height(); - mnAsciiEncoding = GetAsciiEncoding (NULL); - mnDefaultWidth = GetDefaultWidth(); - - mpXFontStruct = (XFontStruct**)calloc( mpXlfd->NumEncodings(), - sizeof(XFontStruct*) ); -} - -ExtendedFontStruct::~ExtendedFontStruct() -{ - delete[] mpRangeCodes; - - for ( int nIdx = 0; nIdx < mpXlfd->NumEncodings(); nIdx++ ) - if ( mpXFontStruct[nIdx] != NULL ) - XFreeFont( mpDisplay, mpXFontStruct[nIdx] ); - - free(mpXFontStruct); -} - -rtl_TextEncoding -ExtendedFontStruct::GetAsciiEncoding( int *pAsciiRange ) const -{ - return mpXlfd->GetAsciiEncoding( pAsciiRange ); -} - -FontPitch -ExtendedFontStruct::GetSpacing( rtl_TextEncoding nEncoding ) -{ - return mpXlfd->GetPitch( nEncoding ); -} - -static XFontStruct* -LoadXFont (Display* pDisplay, const char* pFontName) -{ - XFontStruct* pFont = XLoadQueryFont (pDisplay, pFontName); - if ((pFont != NULL) && (pFont->fid == 0)) - pFont->fid = XLoadFont(pDisplay, pFontName); - -#ifdef HDU_DEBUG - fprintf( stderr, "XLoadFont \"%s\" => %d\n", pFontName, (pFont!= NULL) ); -#endif - return pFont; -} - -int -ExtendedFontStruct::LoadEncoding( rtl_TextEncoding nEncoding ) -{ - int nIdx = mpXlfd->GetEncodingIdx( nEncoding ); - if ( (nIdx < 0) || (mpXFontStruct[ nIdx ] != NULL) ) - return nIdx; - - // limit font height that gets requested from the XServer - // see BugId #44528# FontWork (-> #45038#) and as well Bug #47127# - int nReqPixelHeight = maPixelSize.Height(); - if( nReqPixelHeight > GetMaxFontHeight() ) - nReqPixelHeight = GetMaxFontHeight(); - else if( nReqPixelHeight < 2 ) - nReqPixelHeight = 2; - - // get the X11 font from a matching XLFD - ByteString aFontName; - mpXlfd->ToString( aFontName, nReqPixelHeight, nEncoding ); - mpXFontStruct[ nIdx ] = LoadXFont( mpDisplay, aFontName.GetBuffer() ); - if (mpXFontStruct[nIdx] == NULL) - mpXFontStruct[nIdx] = LoadXFont( mpDisplay, "fixed" ); - - // calculate correction factors to improve matching - // the selected font size to the used bitmap font - int nRealPixelSize = mpXlfd->GetPixelSize(); - if( !nRealPixelSize ) // check for scalable mpXlfd - nRealPixelSize = nReqPixelHeight; - if( nRealPixelSize && (nRealPixelSize != maPixelSize.Width()) ) - mfXScale = (float)maPixelSize.Width() / nRealPixelSize; - if( nRealPixelSize && (nRealPixelSize != maPixelSize.Height()) ) - mfYScale = (float)maPixelSize.Height() / nRealPixelSize; - - return nIdx; -} - -XFontStruct* -ExtendedFontStruct::GetFontStruct( rtl_TextEncoding nEncoding ) -{ - int nIdx = LoadEncoding( nEncoding ); - return nIdx < 0 ? NULL : mpXFontStruct[nIdx] ; -} - -bool -ExtendedFontStruct::GetFontBoundingBox( XCharStruct *pCharStruct, - int *pAscent, int *pDescent ) -{ - pCharStruct->lbearing = 0; - pCharStruct->rbearing = 0; - pCharStruct->width = 0; - pCharStruct->ascent = 0; - pCharStruct->descent = 0; - - *pAscent = 0; - *pDescent = 0; - - int nIdx; - - // check if there is at least one encoding already loaded - bool bEmpty = true; - for ( nIdx = 0; nIdx < mpXlfd->NumEncodings(); nIdx++ ) - bEmpty &= (mpXFontStruct[nIdx] == NULL); - if ( bEmpty ) - LoadEncoding( mpXlfd->GetAsciiEncoding() ); - - // get the max bounding box from all font structs - for ( nIdx = 0; nIdx < mpXlfd->NumEncodings(); nIdx++ ) - if ( mpXFontStruct[ nIdx ] != NULL ) - { - *pAscent = std::max( mpXFontStruct[nIdx]->ascent, *pAscent ); - *pDescent = std::max( mpXFontStruct[nIdx]->descent, *pDescent ); - - XCharStruct* pMaxBounds = &(mpXFontStruct[nIdx]->max_bounds); - - pCharStruct->lbearing = std::max( pMaxBounds->lbearing, - pCharStruct->lbearing ); - pCharStruct->rbearing = std::max( pMaxBounds->rbearing, - pCharStruct->rbearing ); - pCharStruct->width = std::max( pMaxBounds->width, - pCharStruct->width ); - pCharStruct->ascent = std::max( pMaxBounds->ascent, - pCharStruct->ascent ); - pCharStruct->descent = std::max( pMaxBounds->descent, - pCharStruct->descent ); - } - - // apply correction factors to better match selected size to available size - if( mfYScale != 1.0 ) - { - *pAscent = int(*pAscent * mfYScale); - *pDescent = int(*pDescent * mfYScale); - pCharStruct->ascent = (short int)(pCharStruct->ascent * mfYScale); - pCharStruct->descent = (short int)(pCharStruct->descent * mfYScale); - } - if( mfXScale != 1.0 ) - { - pCharStruct->lbearing = (short int)(pCharStruct->lbearing * mfXScale); - pCharStruct->rbearing = (short int)(pCharStruct->rbearing * mfXScale); - pCharStruct->width = (short int)(pCharStruct->width * mfXScale); - } - - return (pCharStruct->width > 0); -} - -bool -ExtendedFontStruct::ToImplFontMetricData(ImplFontMetricData *pFontMetric) -{ - pFontMetric->mnOrientation = 0; - pFontMetric->mnSlant = 0; - pFontMetric->mbDevice = true; - pFontMetric->mbScalableFont = mpXlfd->IsScalable(); - pFontMetric->mbKernableFont = false; - pFontMetric->mbSymbolFlag= mpXlfd->IsSymbolFont(); - pFontMetric->meFamily = mpXlfd->GetFamilyType(); - pFontMetric->meWeight = mpXlfd->GetWeight(); - pFontMetric->mePitch = mpXlfd->GetPitch(); - pFontMetric->meItalic = mpXlfd->GetSlant(); - - int nAscent, nDescent; - XCharStruct aBoundingBox; - if ( GetFontBoundingBox(&aBoundingBox, &nAscent, &nDescent) ) - { - pFontMetric->mnWidth = aBoundingBox.width; - pFontMetric->mnAscent = aBoundingBox.ascent; - pFontMetric->mnDescent = aBoundingBox.descent; - pFontMetric->mnIntLeading = std::max(0, aBoundingBox.ascent - nAscent - + aBoundingBox.descent - nDescent ); - pFontMetric->mnExtLeading = 0; // TODO!!! - return true; - } - else - { - return false; - } -} - -bool -ExtendedFontStruct::Match( const ExtendedXlfd *pXlfd, - const Size& rPixelSize, sal_Bool bVertical ) const -{ - if( mpXlfd != pXlfd ) - return false; - - if( bVertical != mbVertical ) - return FALSE; - - if( rPixelSize.Height() != maPixelSize.Height() ) - return FALSE; - - long nReqWidth = rPixelSize.Width(); - if( !nReqWidth ) - nReqWidth = rPixelSize.Height(); - if( nReqWidth != maPixelSize.Width() ) - return FALSE; - - return true; -} - -// Get an appropriate x-font that contains a glyph for the given unicode -// code point. -// This routine is designed to be called for each character in a text. -// It first checks the given encoding to optimize for the fact that two -// adjacent characters in a text most probably have the same encoding -// In the first call initialize pEncodingInOut to dontknow, this causes -// EncodingHasChar() to fail and thus bootstraps the encoding, otherwise -// make sure that the initial value of pFontInOut matches the encoding and -// that the encoding is valid for the font. -XFontStruct* -ExtendedFontStruct::GetFontStruct( sal_Unicode nChar, rtl_TextEncoding *pEncoding ) -{ - SalConverterCache *pCvt = SalConverterCache::GetInstance(); - - if ( pCvt->EncodingHasChar(mnAsciiEncoding, nChar) ) - { - *pEncoding = mnAsciiEncoding; - return GetFontStruct (mnAsciiEncoding); - } - else - if ( pCvt->EncodingHasChar(mnCachedEncoding, nChar) ) - { - *pEncoding = mnCachedEncoding; - return GetFontStruct (mnCachedEncoding); - } - else - { - for ( int nIdx = 0; nIdx < mpXlfd->NumEncodings(); nIdx++ ) - { - rtl_TextEncoding nEnc = mpXlfd->GetEncoding(nIdx); - if ( (nEnc != mnCachedEncoding) && (nEnc != mnAsciiEncoding) - && pCvt->EncodingHasChar(nEnc, nChar)) - { - mnCachedEncoding = nEnc; - *pEncoding = mnCachedEncoding; - return GetFontStruct (mnCachedEncoding); - } - } - } - - *pEncoding = RTL_TEXTENCODING_DONTKNOW; - return NULL; -} - -// --------------------------------------------------------------------------- -// utility functions to handle xfontstruct information, this is all to -// calculate charwidth information -// --------------------------------------------------------------------------- - -static bool -CharExists( const XCharStruct* pChar ) -{ - if ( pChar == NULL ) - return false; - - return pChar->width - || pChar->ascent || pChar->descent - || pChar->lbearing || pChar->rbearing; -} - -// this relies on non-null per_char information in the fontstruct -static XCharStruct* -GetCharinfo( const XFontStruct *pXFontStruct, sal_MultiByte nChar ) -{ - unsigned int nRow = nChar >> 8; - unsigned int nCol = nChar & 0xFF; - - unsigned int nMinRow = pXFontStruct->min_byte1; - unsigned int nMaxRow = pXFontStruct->max_byte1; - unsigned int nMinCol = pXFontStruct->min_char_or_byte2; - unsigned int nMaxCol = pXFontStruct->max_char_or_byte2; - - if ( nRow >= nMinRow && nRow <= nMaxRow - && nCol >= nMinCol && nCol <= nMaxCol ) - { - return &pXFontStruct->per_char[ - (nRow-nMinRow) * (nMaxCol-nMinCol+1) + (nCol-nMinCol) ]; - } - - return NULL; -} - -static sal_Size -QueryCharWidth16( Display* pDisplay, XLIB_Font nFontID, sal_MultiByte nChar, - sal_Size nDefaultWidth ) -{ - int nDirection, nFontAscent, nFontDescent; - XCharStruct aBoundingBox; - - XQueryTextExtents16( pDisplay, nFontID, (XChar2b*)&nChar, 1, - &nDirection, &nFontAscent, &nFontDescent, &aBoundingBox ); - - return CharExists( &aBoundingBox ) ? aBoundingBox.width : nDefaultWidth; -} - -#if 0 -// currently not used -static sal_Size -QueryCharWidth8( XFontStruct* pXFontStruct, sal_Char nChar, - sal_Size nDefaultWidth ) -{ - int nDirection, nFontAscent, nFontDescent; - XCharStruct aBoundingBox; - - XTextExtents( pXFontStruct, &nChar, 1, - &nDirection, &nFontAscent, &nFontDescent, &aBoundingBox ); - - return CharExists( &aBoundingBox ) ? aBoundingBox.width : nDefaultWidth; -} -#endif - -sal_Size -ExtendedFontStruct::GetDefaultWidth() -{ - return (maPixelSize.Width() + 1) / 2; -} - -// Handle single byte fonts which do not require conversion, this exploits -// the fact that unicode equals latin1 or ansi1252 in the range [0..0xff] and -// is compatible with iso8859-X at least in the range to 0x7f -sal_Size -ExtendedFontStruct::GetCharWidth8( sal_Unicode nFrom, sal_Unicode nTo, - sal_Int32* pWidthArray, rtl_TextEncoding nEncoding ) -{ - if ( !(nFrom <= nTo) ) - return 0; - - XFontStruct* pXFontStruct = GetFontStruct( nEncoding ); - if ( pXFontStruct == NULL ) - return 0; - - // query the font metrics - if ( (pXFontStruct->max_bounds.width == pXFontStruct->min_bounds.width) - || (pXFontStruct->per_char == NULL) ) - { - // fixed width font - for ( int nIdx = nFrom; nIdx <= nTo; nIdx++, pWidthArray++ ) - *pWidthArray = pXFontStruct->max_bounds.width; - } - else - { - // variable width font - int nMinChar = pXFontStruct->min_char_or_byte2; - int nMaxChar = pXFontStruct->max_char_or_byte2; - - int nIdx = nFrom; - - for ( ; nIdx < std::min((int)nTo, nMinChar); nIdx++, pWidthArray++ ) - *pWidthArray = mnDefaultWidth; - for ( ; nIdx <= std::min((int)nTo, nMaxChar); nIdx++, pWidthArray++ ) - { - XCharStruct* pChar = &(pXFontStruct->per_char[nIdx - nMinChar]); - *pWidthArray = CharExists(pChar) ? pChar->width : mnDefaultWidth; - } - for ( ; nIdx <= nTo; nIdx++, pWidthArray++ ) - *pWidthArray = mnDefaultWidth; - } - - // return amount of handled chars - return nTo - nFrom + 1; -} - -// Handle utf16 encoded fonts, which do not require conversion -sal_Size -ExtendedFontStruct::GetCharWidthUTF16( sal_Unicode nFrom, sal_Unicode nTo, - sal_Int32* pWidthArray ) -{ - if ( !(nFrom <= nTo) ) - return 0; - - XFontStruct* pXFontStruct = GetFontStruct( RTL_TEXTENCODING_UNICODE ); - FontPitch nSpacing = mpXlfd->GetPitch( RTL_TEXTENCODING_UNICODE ); - - if ( pXFontStruct == NULL ) - return 0; - - // query the font metrics - if ( nSpacing == PITCH_VARIABLE - && pXFontStruct->per_char == NULL) - { - // get per_char information from the server - for ( sal_Int32 nIdx = nFrom; nIdx <= nTo; nIdx++, pWidthArray++ ) - *pWidthArray = QueryCharWidth16( mpDisplay, pXFontStruct->fid, - nIdx, mnDefaultWidth ); - } - else - if ( (pXFontStruct->max_bounds.width == pXFontStruct->min_bounds.width) - || (pXFontStruct->per_char == NULL) ) - { - // really a fixed width font - for ( sal_Int32 nIdx = nFrom; nIdx <= nTo; nIdx++, pWidthArray++ ) - *pWidthArray = pXFontStruct->max_bounds.width; - } - else - { - // get per_char information from the xfontstruct - for ( sal_Int32 nIdx = nFrom; nIdx <= nTo; nIdx++, pWidthArray++ ) - { - XCharStruct* pChar = GetCharinfo( pXFontStruct, nIdx ); - *pWidthArray = CharExists(pChar) ? pChar->width : mnDefaultWidth; - } - } - - // return amount of handled chars - return nTo - nFrom + 1; -} - -// handle non unicode fonts that are converted into encoding matching the -// font in fontstruct, 8 and 16 bit fonts are handled the same way -sal_Size -ExtendedFontStruct::GetCharWidth16( sal_Unicode nFrom, sal_Unicode nTo, - sal_Int32* pWidthArray, ExtendedFontStruct *pFallback ) -{ - if ( nFrom > nTo ) - return 0; - - sal_Char pBuffer[64]; - - SalConverterCache *pCvt = SalConverterCache::GetInstance(); - for ( sal_Int32 nIdx = nFrom ; nIdx <= nTo ; nIdx++, pWidthArray++ ) - { - FontPitch nSpacing; - sal_Size nSize; - sal_Unicode nUniIdx = (sal_Unicode)nIdx; - - // get a matching fontstruct - rtl_TextEncoding nEnc; - XFontStruct *pFont; - - if ( (pFont = GetFontStruct(nUniIdx, &nEnc)) != NULL ) - { - nSpacing = GetSpacing( nEnc ); - } - else - if ( (pFallback != NULL) - && ((pFont = pFallback->GetFontStruct(nUniIdx, &nEnc)) != NULL) ) - { - nSpacing = pFallback->GetSpacing( nEnc ); - } - else - if ( (pFallback != NULL) - && ((pFont = pFallback->GetFontStruct(nUniIdx = '?', &nEnc)) != NULL) ) - { - nSpacing = pFallback->GetSpacing( nEnc ); - } - else - { - // TODO What should the default value be? - nSpacing = PITCH_FIXED; - } - - if ( pFont ) - { - nSize = pCvt->ConvertStringUTF16(&nUniIdx, 1, pBuffer, sizeof(pBuffer), nEnc); - // XXX FIXME - if ((nEnc == RTL_TEXTENCODING_GB_2312) || (nEnc == RTL_TEXTENCODING_EUC_KR)) - { - for (unsigned int n_char = 0; n_char < nSize; n_char++ ) - pBuffer[ n_char ] &= 0x7F; - } - } - - // query font metrics - if ( pFont && (nSize == 1 || nSize == 2) ) - { - sal_MultiByte nChar = (nSize == 1) ? (unsigned char)pBuffer[0] : - ((sal_MultiByte)pBuffer[0] << 8) + (sal_MultiByte)pBuffer[1]; - - if ( nSpacing == PITCH_VARIABLE - && pFont->per_char == NULL) - { - // get per_char information from the x-server - *pWidthArray = QueryCharWidth16( mpDisplay, pFont->fid, - nChar, mnDefaultWidth ); - } - else - if ( (pFont->max_bounds.width == pFont->min_bounds.width) - || (pFont->per_char == NULL) ) - { - // fixed width font - *pWidthArray = pFont->max_bounds.width; - } - else - { - // get per_char information from the xfontstruct - XCharStruct* pChar = GetCharinfo( pFont, nChar ); - *pWidthArray = CharExists(pChar) ? pChar->width : mnDefaultWidth; - } - } - else - { - // conversion error - *pWidthArray = mnDefaultWidth; - } - } - - // return amount of handled chars - return nTo - nFrom + 1; -} - -sal_Size -ExtendedFontStruct::GetCharWidth( sal_Unicode cChar, sal_Int32 *pPhysicalWidth, - sal_Int32 *pLogicalWidth ) -{ - sal_Size nConverted = 0; - - // dispatch querying of metrics to most promising encoding candidate - int nAsciiRange; - rtl_TextEncoding nEncoding = mpXlfd->GetAsciiEncoding(&nAsciiRange); - if ( nEncoding == RTL_TEXTENCODING_UNICODE ) - { - // if we have a unicode encoded system font than we get the charwidth - // straight forward - nConverted = GetCharWidthUTF16( cChar, cChar, pPhysicalWidth ); - } - else - { - if ( cChar < nAsciiRange ) - { - // optimize the most frequent case, requesting only the latin1 - // chars which are mappable to a single encoding - nConverted = GetCharWidth8( cChar, cChar, pPhysicalWidth, nEncoding ); - } - - // if further requests are pending, then the according unicode - // codepoint has to be dispatched to one of the system fonts and - // converted to this fonts encoding - nConverted += GetCharWidth16( cChar + nConverted, cChar, - pPhysicalWidth + nConverted, NULL ); - } - - // convert physical width to logical width, apply correction factor if needed - *pLogicalWidth = *pPhysicalWidth; - if( mfXScale != 1.0 ) - *pLogicalWidth = sal_Int32(*pLogicalWidth * mfXScale); - - return nConverted; -} - -bool ExtendedFontStruct::HasUnicodeChar( sal_Unicode cChar ) const -{ - // #i18818# return false if there are no known encodings - if( !mnRangeCount ) - return false; - - // init unicode range cache if needed - if( mnRangeCount < 0 ) - { - mnRangeCount = mpXlfd->GetFontCodeRanges( NULL ); - if( !mnRangeCount ) - return false; - mpRangeCodes = new sal_uInt32[ 2*mnRangeCount ]; - mpXlfd->GetFontCodeRanges( mpRangeCodes ); - // TODO: make sure everything is sorted - } - - // binary search in unicode ranges - int nLower = 0; - int nMid = mnRangeCount; - int nUpper = 2 * mnRangeCount - 1; - while( nLower < nUpper ) - { - if( cChar >= mpRangeCodes[ nMid ] ) - nLower = nMid; - else - nUpper = nMid - 1; - nMid = (nLower + nUpper + 1) / 2; - } - if( (nMid == 0) && (cChar < mpRangeCodes[0]) ) - return false; - return (nMid & 1) ? false: true; -} - -int ExtendedFontStruct::GetFontCodeRanges( sal_uInt32* pCodePairs ) const -{ - // make sure unicode range cache is initialized - HasUnicodeChar(0); - - // transfer range pairs if requested - if( pCodePairs ) - { - for( int i = 0; i < 2*mnRangeCount; ++i ) - pCodePairs[i] = mpRangeCodes[i]; - } - - return mnRangeCount; -} - -// ======================================================================= - -X11FontLayout::X11FontLayout( ExtendedFontStruct& rFont ) -: mrFont( rFont ) -{} - -// ----------------------------------------------------------------------- - -bool X11FontLayout::LayoutText( ImplLayoutArgs& rArgs ) -{ - Point aNewPos( 0, 0 ); - bool bRightToLeft; - int nCharPos; - - for( nCharPos = -1; rArgs.GetNextPos( &nCharPos, &bRightToLeft ); ) - { - sal_UCS4 cChar = rArgs.mpStr[ nCharPos ]; - if( bRightToLeft ) - cChar = GetMirroredChar( cChar ); - int nGlyphIndex = cChar | GF_ISCHAR; - - // check if the font supports the char - if( !mrFont.HasUnicodeChar( cChar ) ) - { - // try to replace the failing char using the same font - const char* pApproxUTF8 = GetAutofallback( cChar ); - cChar = 0; - if( pApproxUTF8 ) - { - String aApproxStr( pApproxUTF8, RTL_TEXTENCODING_UTF8 ); - if( aApproxStr.Len() == 1 ) - { - // TODO: support Autofallback for len>1 - sal_Unicode cApprox = aApproxStr.GetChar( 0 ); - if( mrFont.HasUnicodeChar( cApprox ) ) - nGlyphIndex = (cChar = cApprox) | GF_ISCHAR; - } - } - // request fallback glyph if necessary - if( !cChar ) - { - rArgs.NeedFallback( nCharPos, bRightToLeft ); - if( rArgs.mnFlags & SAL_LAYOUT_FOR_FALLBACK ) - nGlyphIndex = 0; // drop NotDef fallback glyphs - } - } - - sal_Int32 nPhysGlyphWidth, nLogGlyphWidth; - mrFont.GetCharWidth( cChar, &nPhysGlyphWidth, &nLogGlyphWidth ); - int nGlyphFlags = (nPhysGlyphWidth > 0) ? 0 : GlyphItem::IS_IN_CLUSTER; - if( bRightToLeft ) - nGlyphFlags |= GlyphItem::IS_RTL_GLYPH; - GlyphItem aGI( nCharPos, nGlyphIndex, aNewPos, nGlyphFlags, nPhysGlyphWidth ); - aGI.mnNewWidth = nLogGlyphWidth; - AppendGlyph( aGI ); - - aNewPos.X() += nLogGlyphWidth; - } - - return (nCharPos >= 0); -} - -// ----------------------------------------------------------------------- - -void X11FontLayout::AdjustLayout( ImplLayoutArgs& rArgs ) -{ - GenericSalLayout::AdjustLayout( rArgs ); - SetOrientation( 0 ); // X11 fonts are to be rotated in upper layers -} - -// ----------------------------------------------------------------------- - -void X11FontLayout::DrawText( SalGraphics& rSalGraphics ) const -{ - static const int MAXGLYPHS = 160; - int nMaxGlyphs = GetOrientation() ? 1 : MAXGLYPHS; - - // workaround for #i49902# similar to #b6228733 with XDrawText items - // => output each item separately for non-unicode font encodings! - // this is done here instead of in DrawStringUCS2MB() because - // it needs the item positions and they are easily available here - if( mrFont.GetAsciiEncoding() != RTL_TEXTENCODING_UNICODE ) - nMaxGlyphs = 1; - - Point aPos; - sal_GlyphId aGlyphAry[ MAXGLYPHS ]; - sal_Unicode pStr[ MAXGLYPHS ]; - for( int nStart=0;;) - { - int nGlyphCount = GetNextGlyphs( nMaxGlyphs, aGlyphAry, aPos, nStart ); - if( !nGlyphCount ) - break; - - for( int i = 0; i < nGlyphCount; ++i ) - pStr[ i ] = aGlyphAry[ i ] & GF_IDXMASK; - - static_cast<X11SalGraphics&>(rSalGraphics).DrawStringUCS2MB( mrFont, aPos, pStr, nGlyphCount ); - } -} - -// ======================================================================= |