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Diffstat (limited to 'vcl/os2/source/gdi/os2layout.cxx')
| -rw-r--r-- | vcl/os2/source/gdi/os2layout.cxx | 1041 |
1 files changed, 0 insertions, 1041 deletions
diff --git a/vcl/os2/source/gdi/os2layout.cxx b/vcl/os2/source/gdi/os2layout.cxx deleted file mode 100644 index a6574c3a2171..000000000000 --- a/vcl/os2/source/gdi/os2layout.cxx +++ /dev/null @@ -1,1041 +0,0 @@ -/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ -/************************************************************************* - * - * 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. - * - ************************************************************************/ - -#include <rtl/ustring.hxx> -#include <osl/module.h> -#include <salgdi.h> -#include <saldata.hxx> -#include <vcl/sallayout.hxx> - -#ifndef __H_FT2LIB -#include <wingdi.h> -#include <ft2lib.h> -#endif - -#include <cstdio> -#include <malloc.h> - -#ifdef GCP_KERN_HACK - #include <algorithm> -#endif // GCP_KERN_HACK - -// for GetMirroredChar -#include <vcl/svapp.hxx> - -#include <boost/unordered_map.hpp> -typedef boost::unordered_map<int,int> IntMap; - -#define DROPPED_OUTGLYPH 0xFFFF - -// ======================================================================= - -// OS/2 specific physical font instance -class ImplOs2FontEntry : public ImplFontEntry -{ -public: - ImplOs2FontEntry( ImplFontSelectData& ); - ~ImplOs2FontEntry(); - -private: - // TODO: also add HFONT??? Watch out for issues with too many active fonts... - -#ifdef GCP_KERN_HACK -public: - bool HasKernData() const; - void SetKernData( int, const KERNINGPAIRS* ); - int GetKerning( sal_Unicode, sal_Unicode ) const; -private: - KERNINGPAIRS* mpKerningPairs; - int mnKerningPairs; -#endif // GCP_KERN_HACK - -public: - int GetCachedGlyphWidth( int nCharCode ) const; - void CacheGlyphWidth( int nCharCode, int nCharWidth ); -private: - IntMap maWidthMap; -}; - -// ----------------------------------------------------------------------- - -inline void ImplOs2FontEntry::CacheGlyphWidth( int nCharCode, int nCharWidth ) -{ - maWidthMap[ nCharCode ] = nCharWidth; -} - -inline int ImplOs2FontEntry::GetCachedGlyphWidth( int nCharCode ) const -{ - IntMap::const_iterator it = maWidthMap.find( nCharCode ); - if( it == maWidthMap.end() ) - return -1; - return it->second; -} - -// ======================================================================= - -class Os2Layout : public SalLayout -{ -public: - Os2Layout( HDC, const ImplOs2FontData&, ImplOs2FontEntry& ); - virtual void InitFont() const; - void SetFontScale( float f ) { mfFontScale = f; } - float GetFontScale() const { return mfFontScale; } - -protected: - HPS mhPS; // OS2 device handle - FATTRS mhFont; - int mnBaseAdv; // x-offset relative to Layout origin - float mfFontScale; // allows metrics emulation of huge font sizes - - const ImplOs2FontData& mrOs2FontData; - ImplOs2FontEntry& mrOs2FontEntry; -}; - -// ======================================================================= - -class Os2SalLayout : public Os2Layout -{ -public: - Os2SalLayout( HPS, BYTE nCharSet, const ImplOs2FontData&, ImplOs2FontEntry& ); - virtual ~Os2SalLayout(); - - virtual bool LayoutText( ImplLayoutArgs& ); - virtual void AdjustLayout( ImplLayoutArgs& ); - virtual void DrawText( SalGraphics& ) const; - - virtual int GetNextGlyphs( int nLen, sal_GlyphId* pGlyphs, Point& rPos, int&, - sal_Int32* pGlyphAdvances, int* pCharIndexes ) const; - - virtual long FillDXArray( long* pDXArray ) const; - virtual int GetTextBreak( long nMaxWidth, long nCharExtra, int nFactor ) const; - virtual void GetCaretPositions( int nArraySize, long* pCaretXArray ) const; - - // for glyph+font+script fallback - virtual void MoveGlyph( int nStart, long nNewXPos ); - virtual void DropGlyph( int nStart ); - virtual void Simplify( bool bIsBase ); - -protected: - void Justify( long nNewWidth ); - void ApplyDXArray( const ImplLayoutArgs& ); - -protected: - -private: - int mnGlyphCount; - int mnCharCount; - sal_Unicode* mpOutGlyphs; - int* mpGlyphAdvances; // if possible this is shared with mpGlyphAdvances[] - int* mpGlyphOrigAdvs; - int* mpCharWidths; // map rel char pos to char width - int* mpChars2Glyphs; // map rel char pos to abs glyph pos - int* mpGlyphs2Chars; // map abs glyph pos to abs char pos - bool* mpGlyphRTLFlags; // BiDi status for glyphs: true=>RTL - mutable long mnWidth; - bool mbDisableGlyphs; - - int mnNotdefWidth; - BYTE mnCharSet; - -}; - -// ======================================================================= - -Os2Layout::Os2Layout( HPS hPS, const ImplOs2FontData& rWFD, ImplOs2FontEntry& rWFE ) -: mhPS( hPS ), - mnBaseAdv( 0 ), - mfFontScale( 1.0 ), - mrOs2FontData( rWFD ), - mrOs2FontEntry( rWFE ) -{ - BOOL fSuccess; - fSuccess = Ft2QueryLogicalFont( mhPS, LCID_BASE, NULL, &mhFont, sizeof(FATTRS)); -} - -// ----------------------------------------------------------------------- - -void Os2Layout::InitFont() const -{ - // select fallback level 0 font - APIRET rc = Ft2CreateLogFont( mhPS, NULL, LCID_BASE, (PFATTRS)&mhFont); -} - -// ======================================================================= - -Os2SalLayout::Os2SalLayout( HPS hPS, BYTE nCharSet, - const ImplOs2FontData& rOs2FontData, ImplOs2FontEntry& rOs2FontEntry ) -: Os2Layout( hPS, rOs2FontData, rOs2FontEntry ), - mnGlyphCount( 0 ), - mnCharCount( 0 ), - mpOutGlyphs( NULL ), - mpGlyphAdvances( NULL ), - mpGlyphOrigAdvs( NULL ), - mpCharWidths( NULL ), - mpChars2Glyphs( NULL ), - mpGlyphs2Chars( NULL ), - mpGlyphRTLFlags( NULL ), - mnWidth( 0 ), - mnNotdefWidth( -1 ), - mnCharSet( nCharSet ), - mbDisableGlyphs( false ) -{ - mbDisableGlyphs = true; -} - -// ----------------------------------------------------------------------- - -Os2SalLayout::~Os2SalLayout() -{ - delete[] mpGlyphRTLFlags; - delete[] mpGlyphs2Chars; - delete[] mpChars2Glyphs; - if( mpCharWidths != mpGlyphAdvances ) - delete[] mpCharWidths; - delete[] mpGlyphOrigAdvs; - delete[] mpGlyphAdvances; - delete[] mpOutGlyphs; -} - -// ----------------------------------------------------------------------- - -bool Os2SalLayout::LayoutText( ImplLayoutArgs& rArgs ) -{ - // prepare layout - // TODO: fix case when recyclying old Os2SalLayout object - mbDisableGlyphs |= ((rArgs.mnFlags & SAL_LAYOUT_DISABLE_GLYPH_PROCESSING) != 0); - mnCharCount = rArgs.mnEndCharPos - rArgs.mnMinCharPos; - - if( !mbDisableGlyphs ) - { - // Win32 glyph APIs have serious problems with vertical layout - // => workaround is to use the unicode methods then - if( rArgs.mnFlags & SAL_LAYOUT_VERTICAL ) - mbDisableGlyphs = true; - else - // use cached value from font face - mbDisableGlyphs = mrOs2FontData.IsGlyphApiDisabled(); - } - - // TODO: use a cached value for bDisableAsianKern from upper layers - - // layout text - int i, j; - - mnGlyphCount = 0; - bool bVertical = (rArgs.mnFlags & SAL_LAYOUT_VERTICAL) != 0; - - // count the number of chars to process if no RTL run - rArgs.ResetPos(); - bool bHasRTL = false; - while( rArgs.GetNextRun( &i, &j, &bHasRTL ) && !bHasRTL ) - mnGlyphCount += j - i; - - // if there are RTL runs we need room to remember individual BiDi flags - if( bHasRTL ) - { - mpGlyphRTLFlags = new bool[ mnCharCount ]; - for( i = 0; i < mnCharCount; ++i ) - mpGlyphRTLFlags[i] = false; - } - - // rewrite the logical string if needed to prepare for the API calls - const sal_Unicode* pBidiStr = rArgs.mpStr + rArgs.mnMinCharPos; - if( (mnGlyphCount != mnCharCount) || bVertical ) - { - // we need to rewrite the pBidiStr when any of - // - BiDirectional layout - // - vertical layout - // - partial runs (e.g. with control chars or for glyph fallback) - // are involved - sal_Unicode* pRewrittenStr = (sal_Unicode*)alloca( mnCharCount * sizeof(sal_Unicode) ); - pBidiStr = pRewrittenStr; - - // note: glyph to char mapping is relative to first character - mpChars2Glyphs = new int[ mnCharCount ]; - mpGlyphs2Chars = new int[ mnCharCount ]; - for( i = 0; i < mnCharCount; ++i ) - mpChars2Glyphs[i] = mpGlyphs2Chars[i] = -1; - - mnGlyphCount = 0; - rArgs.ResetPos(); - bool bIsRTL = false; - while( rArgs.GetNextRun( &i, &j, &bIsRTL ) ) - { - do - { - // get the next leftmost character in this run - int nCharPos = bIsRTL ? --j : i++; - sal_Unicode cChar = rArgs.mpStr[ nCharPos ]; - - // in the RTL case mirror the character and remember its RTL status - if( bIsRTL ) - { - cChar = ::GetMirroredChar( cChar ); - mpGlyphRTLFlags[ mnGlyphCount ] = true; - } - - // for vertical writing use vertical alternatives - if( bVertical ) - { - sal_Unicode cVert = ::GetVerticalChar( cChar ); - if( cVert ) - cChar = cVert; - } - - // rewrite the original string - // update the mappings between original and rewritten string - pRewrittenStr[ mnGlyphCount ] = cChar; - mpGlyphs2Chars[ mnGlyphCount ] = nCharPos; - mpChars2Glyphs[ nCharPos - rArgs.mnMinCharPos ] = mnGlyphCount; - ++mnGlyphCount; - } while( i < j ); - } - } - - mpOutGlyphs = new sal_Unicode[ mnGlyphCount ]; - mpGlyphAdvances = new int[ mnGlyphCount ]; - - if( rArgs.mnFlags & (SAL_LAYOUT_KERNING_PAIRS | SAL_LAYOUT_KERNING_ASIAN) ) - mpGlyphOrigAdvs = new int[ mnGlyphCount ]; - -#ifndef GCP_KERN_HACK - DWORD nGcpOption = 0; - // enable kerning if requested - if( rArgs.mnFlags & SAL_LAYOUT_KERNING_PAIRS ) - nGcpOption |= GCP_USEKERNING; -#endif // GCP_KERN_HACK - - LONG lLcid = Ft2QueryCharSet( mhPS); - - for( i = 0; i < mnGlyphCount; ++i ) - mpOutGlyphs[i] = pBidiStr[ i ]; - mnWidth = 0; - for( i = 0; i < mnGlyphCount; ++i ) - { - const sal_Unicode* pCodes = &pBidiStr[i]; - // check for surrogate pairs - if( (pCodes[0] & 0xFC00) == 0xDC00 ) - continue; - bool bSurrogate = ((pCodes[0] & 0xFC00) == 0xD800); - - // get the width of the corresponding code point - int nCharCode = pCodes[0]; - if( bSurrogate ) - nCharCode = 0x10000 + ((pCodes[0] & 0x03FF) << 10) + (pCodes[1] & 0x03FF); - int nGlyphWidth = mrOs2FontEntry.GetCachedGlyphWidth( nCharCode ); - if( nGlyphWidth == -1 ) - { - if (!Ft2QueryStringWidthW( mhPS, (LPWSTR)&pCodes[0], 1, (LONG*)&nGlyphWidth)) - nGlyphWidth = 0; - mrOs2FontEntry.CacheGlyphWidth( nCharCode, nGlyphWidth ); - } - mpGlyphAdvances[ i ] = nGlyphWidth; - mnWidth += nGlyphWidth; - - // remaining codes of surrogate pair get a zero width - if( bSurrogate ) - mpGlyphAdvances[ i+1 ] = 0; - - // check with the font face if glyph fallback is needed - if( mrOs2FontData.HasChar( nCharCode ) ) - continue; - // Type1 charmaps are not complete (or buggy), use FT2 to check again - if (Ft2FontSupportsUnicodeChar( mhPS, lLcid, TRUE, nCharCode)) - continue; - -#if OSL_DEBUG_LEVEL > 1 - debug_printf("Os2SalLayout::LayoutText font does not support unicode char\n"); -#endif - // request glyph fallback at this position in the string - bool bRTL = mpGlyphRTLFlags ? mpGlyphRTLFlags[i] : false; - int nCharPos = mpGlyphs2Chars ? mpGlyphs2Chars[i]: i + rArgs.mnMinCharPos; - rArgs.NeedFallback( nCharPos, bRTL ); - if( bSurrogate ) - rArgs.NeedFallback( nCharPos+1, bRTL ); - - if( rArgs.mnFlags & SAL_LAYOUT_FOR_FALLBACK ) - { - // when we already are layouting for glyph fallback - // then a new unresolved glyph is not interesting - mnNotdefWidth = 0; - mpOutGlyphs[i] = DROPPED_OUTGLYPH; - if( mbDisableGlyphs && bSurrogate ) - mpOutGlyphs[i+1] = DROPPED_OUTGLYPH; - } - else - { - if( mnNotdefWidth < 0 ) - { - // get the width of the NotDef glyph - LONG aExtent; - mnNotdefWidth = 0; - if (Ft2QueryStringWidthW( mhPS, (LPWSTR)&rArgs.mpStr[ nCharPos ], 1, &aExtent)) - mnNotdefWidth = aExtent; - } - // use a better NotDef glyph - if( !mbDisableGlyphs ) - mpOutGlyphs[i] = 0; - } - - // replace the current glyph with the NotDef glyph - mnWidth += mnNotdefWidth - mpGlyphAdvances[i]; - mpGlyphAdvances[i] = mnNotdefWidth; - if( mpGlyphOrigAdvs ) - mpGlyphOrigAdvs[i] = mnNotdefWidth; - } - -#ifdef GCP_KERN_HACK - // apply kerning if the layout engine has not yet done it - if( rArgs.mnFlags & (SAL_LAYOUT_KERNING_ASIAN|SAL_LAYOUT_KERNING_PAIRS) ) - { -#else // GCP_KERN_HACK - // apply just asian kerning - if( rArgs.mnFlags & SAL_LAYOUT_KERNING_ASIAN ) - { - if( !(rArgs.mnFlags & SAL_LAYOUT_KERNING_PAIRS) ) -#endif // GCP_KERN_HACK - for( i = 0; i < mnGlyphCount; ++i ) - mpGlyphOrigAdvs[i] = mpGlyphAdvances[i]; - - // #99658# also apply asian kerning on the substring border - int nLen = mnGlyphCount; - if( rArgs.mnMinCharPos + nLen < rArgs.mnLength ) - ++nLen; - for( i = 1; i < nLen; ++i ) - { -#ifdef GCP_KERN_HACK - if( rArgs.mnFlags & SAL_LAYOUT_KERNING_PAIRS ) - { - int nKernAmount = mrOs2FontEntry.GetKerning( pBidiStr[i-1], pBidiStr[i] ); - mpGlyphAdvances[ i-1 ] += nKernAmount; - mnWidth += nKernAmount; - } - else if( rArgs.mnFlags & SAL_LAYOUT_KERNING_ASIAN ) -#endif // GCP_KERN_HACK - - if( (0x3000 == (0xFF00 & pBidiStr[i-1])) - && (0x3000 == (0xFF00 & pBidiStr[i])) ) - { - long nKernFirst = +CalcAsianKerning( pBidiStr[i-1], true, bVertical ); - long nKernNext = -CalcAsianKerning( pBidiStr[i], false, bVertical ); - - long nDelta = (nKernFirst < nKernNext) ? nKernFirst : nKernNext; - if( nDelta<0 && nKernFirst!=0 && nKernNext!=0 ) - { - nDelta = (nDelta * mpGlyphAdvances[i-1] + 2) / 4; - mpGlyphAdvances[i-1] += nDelta; - mnWidth += nDelta; - } - } - } - } - - // calculate virtual char widths - if( !mpGlyphs2Chars ) - mpCharWidths = mpGlyphAdvances; - else - { - mpCharWidths = new int[ mnCharCount ]; - for( i = 0; i < mnCharCount; ++i ) - mpCharWidths[ i ] = 0; - for( i = 0; i < mnGlyphCount; ++i ) - { - int j = mpGlyphs2Chars[ i ] - rArgs.mnMinCharPos; - if( j >= 0 ) - mpCharWidths[ j ] += mpGlyphAdvances[ i ]; - } - } - - // scale layout metrics if needed - if( mfFontScale != 1.0 ) - { - mnWidth *= mfFontScale; - mnBaseAdv *= mfFontScale; - for( i = 0; i < mnCharCount; ++i ) - mpCharWidths[ i ] *= mfFontScale; - if( mpGlyphAdvances != mpCharWidths ) - for( i = 0; i < mnGlyphCount; ++i ) - mpGlyphAdvances[ i ] *= mfFontScale; - if( mpGlyphOrigAdvs && (mpGlyphOrigAdvs != mpGlyphAdvances) ) - for( i = 0; i < mnGlyphCount; ++i ) - mpGlyphOrigAdvs[ i ] *= mfFontScale; - } - - return true; -} - -// ----------------------------------------------------------------------- - -int Os2SalLayout::GetNextGlyphs( int nLen, sal_GlyphId* pGlyphs, Point& rPos, int& nStart, - sal_Int32* pGlyphAdvances, int* pCharIndexes ) const -{ - // return zero if no more glyph found - if( nStart >= mnGlyphCount ) - return 0; - - // calculate glyph position relative to layout base - // TODO: avoid for nStart!=0 case by reusing rPos - long nXOffset = mnBaseAdv; - for( int i = 0; i < nStart; ++i ) - nXOffset += mpGlyphAdvances[ i ]; - - // calculate absolute position in pixel units - Point aRelativePos( nXOffset, 0 ); - rPos = GetDrawPosition( aRelativePos ); - - int nCount = 0; - while( nCount < nLen ) - { - // update return values {nGlyphIndex,nCharPos,nGlyphAdvance} - long nGlyphIndex = mpOutGlyphs[ nStart ]; - if( mbDisableGlyphs ) - { - if( mnLayoutFlags & SAL_LAYOUT_VERTICAL ) - { - sal_Unicode cChar = (sal_Unicode)(nGlyphIndex & GF_IDXMASK); -#ifdef GNG_VERT_HACK - if( mrOs2FontData.HasGSUBstitutions( mhPS ) - && mrOs2FontData.IsGSUBstituted( cChar ) ) - nGlyphIndex |= GF_ROTL | GF_GSUB; - else -#endif // GNG_VERT_HACK - { - nGlyphIndex |= GetVerticalFlags( cChar ); - if( !(nGlyphIndex & GF_ROTMASK) ) - nGlyphIndex |= GF_VERT; - } - } - nGlyphIndex |= GF_ISCHAR; - } - ++nCount; - *(pGlyphs++) = nGlyphIndex; - if( pGlyphAdvances ) - *(pGlyphAdvances++) = mpGlyphAdvances[ nStart ]; - if( pCharIndexes ) - { - int nCharPos; - if( !mpGlyphs2Chars ) - nCharPos = nStart + mnMinCharPos; - else - nCharPos = mpGlyphs2Chars[nStart]; - *(pCharIndexes++) = nCharPos; - } - - // stop at last glyph - if( ++nStart >= mnGlyphCount ) - break; - - // stop when next x-position is unexpected - if( !pGlyphAdvances && mpGlyphOrigAdvs ) - if( mpGlyphAdvances[nStart-1] != mpGlyphOrigAdvs[nStart-1] ) - break; - } - - return nCount; -} - -// ----------------------------------------------------------------------- - -void Os2SalLayout::DrawText( SalGraphics& rGraphics ) const -{ - if( mnGlyphCount <= 0 ) - return; - - Point aPos = GetDrawPosition( Point( mnBaseAdv, 0 ) ); - POINTL aPt; - APIRET rc; - - aPt.x = aPos.X(); - aPt.y = static_cast<Os2SalGraphics&>(rGraphics).mnHeight - aPos.Y(); - - // ft2lib doesn't work with printer hps, so we fallback to codepage printing - // until cp1200 support will work. - if (static_cast<Os2SalGraphics&>(rGraphics).mbPrinter) { - // convert to codepage - ByteString str( mpOutGlyphs, gsl_getSystemTextEncoding() ); - // gliph size is not recalculated, so it could be wrong! - rc = Ft2CharStringPosAtA( static_cast<Os2SalGraphics&>(rGraphics).mhPS, - &aPt, NULL, CHS_VECTOR, mnGlyphCount, (PSZ)str.GetBuffer(), - (LONG*)mpGlyphAdvances, 0); - } else { - // try unicode rendering to screen - rc = Ft2CharStringPosAtW( static_cast<Os2SalGraphics&>(rGraphics).mhPS, - &aPt, NULL, CHS_VECTOR, mnGlyphCount, (LPWSTR)mpOutGlyphs, - (LONG*)mpGlyphAdvances, 0); - if (rc == GPI_ERROR) { - // if *W fails, convert to codepage and use *A (fallback to GPI into ft2) - ByteString str( mpOutGlyphs, gsl_getSystemTextEncoding() ); -#if OSL_DEBUG_LEVEL > 1 - debug_printf("Os2SalLayout::DrawText HPS %08x PosAtW failed '%s'!\n",static_cast<Os2SalGraphics&>(rGraphics).mhPS,str.GetBuffer()); -#endif - // gliph size is not recalculated, so it could be wrong! - rc = Ft2CharStringPosAtA( static_cast<Os2SalGraphics&>(rGraphics).mhPS, - &aPt, NULL, CHS_VECTOR, mnGlyphCount, (PSZ)str.GetBuffer(), - (LONG*)mpGlyphAdvances, 0); - } - } -} - -// ----------------------------------------------------------------------- - -long Os2SalLayout::FillDXArray( long* pDXArray ) const -{ - if( !mnWidth ) - { - long mnWidth = mnBaseAdv; - for( int i = 0; i < mnGlyphCount; ++i ) - mnWidth += mpGlyphAdvances[ i ]; - } - - if( pDXArray != NULL ) - { - for( int i = 0; i < mnCharCount; ++i ) - pDXArray[ i ] = mpCharWidths[ i ]; - } - - return mnWidth; -} - -// ----------------------------------------------------------------------- - -int Os2SalLayout::GetTextBreak( long nMaxWidth, long nCharExtra, int nFactor ) const -// NOTE: the nFactor is used to prevent rounding errors for small nCharExtra values -{ - if( mnWidth ) - if( (mnWidth * nFactor + mnCharCount * nCharExtra) <= nMaxWidth ) - return STRING_LEN; - - long nExtraWidth = mnBaseAdv * nFactor; - for( int n = 0; n < mnCharCount; ++n ) - { - // skip unused characters - if( mpChars2Glyphs && (mpChars2Glyphs[n] < 0) ) - continue; - // add char widths until max - nExtraWidth += mpCharWidths[ n ] * nFactor; - if( nExtraWidth >= nMaxWidth ) - return (mnMinCharPos + n); - nExtraWidth += nCharExtra; - } - - return STRING_LEN; -} - -// ----------------------------------------------------------------------- - -void Os2SalLayout::GetCaretPositions( int nMaxIdx, long* pCaretXArray ) const -{ - long nXPos = mnBaseAdv; - - if( !mpGlyphs2Chars ) - { - for( int i = 0; i < nMaxIdx; i += 2 ) - { - pCaretXArray[ i ] = nXPos; - nXPos += mpGlyphAdvances[ i>>1 ]; - pCaretXArray[ i+1 ] = nXPos; - } - } - else - { - int i; - for( i = 0; i < nMaxIdx; ++i ) - pCaretXArray[ i ] = -1; - - // assign glyph positions to character positions - for( i = 0; i < mnGlyphCount; ++i ) - { - int nCurrIdx = mpGlyphs2Chars[ i ] - mnMinCharPos; - long nXRight = nXPos + mpCharWidths[ nCurrIdx ]; - nCurrIdx *= 2; - if( !(mpGlyphRTLFlags && mpGlyphRTLFlags[i]) ) - { - // normal positions for LTR case - pCaretXArray[ nCurrIdx ] = nXPos; - pCaretXArray[ nCurrIdx+1 ] = nXRight; - } - else - { - // reverse positions for RTL case - pCaretXArray[ nCurrIdx ] = nXRight; - pCaretXArray[ nCurrIdx+1 ] = nXPos; - } - nXPos += mpGlyphAdvances[ i ]; - } - } -} - -// ----------------------------------------------------------------------- - -void Os2SalLayout::Justify( long nNewWidth ) -{ - long nOldWidth = mnWidth; - mnWidth = nNewWidth; - - if( mnGlyphCount <= 0 ) - return; - - if( nNewWidth == nOldWidth ) - return; - - // the rightmost glyph cannot be stretched - const int nRight = mnGlyphCount - 1; - nOldWidth -= mpGlyphAdvances[ nRight ]; - nNewWidth -= mpGlyphAdvances[ nRight ]; - - // count stretchable glyphs - int nStretchable = 0, i; - for( i = 0; i < nRight; ++i ) - if( mpGlyphAdvances[i] >= 0 ) - ++nStretchable; - - // stretch these glyphs - int nDiffWidth = nNewWidth - nOldWidth; - for( i = 0; (i < nRight) && (nStretchable > 0); ++i ) - { - if( mpGlyphAdvances[i] <= 0 ) - continue; - int nDeltaWidth = nDiffWidth / nStretchable; - mpGlyphAdvances[i] += nDeltaWidth; - --nStretchable; - nDiffWidth -= nDeltaWidth; - } -} - -// ----------------------------------------------------------------------- - -void Os2SalLayout::AdjustLayout( ImplLayoutArgs& rArgs ) -{ - SalLayout::AdjustLayout( rArgs ); - - // adjust positions if requested - if( rArgs.mpDXArray ) - ApplyDXArray( rArgs ); - else if( rArgs.mnLayoutWidth ) - Justify( rArgs.mnLayoutWidth ); - else - return; - - // recalculate virtual char widths if they were changed - if( mpCharWidths != mpGlyphAdvances ) - { - int i; - if( !mpGlyphs2Chars ) - { - // standard LTR case - for( i = 0; i < mnGlyphCount; ++i ) - mpCharWidths[ i ] = mpGlyphAdvances[ i ]; - } - else - { - // BiDi or complex case - for( i = 0; i < mnCharCount; ++i ) - mpCharWidths[ i ] = 0; - for( i = 0; i < mnGlyphCount; ++i ) - { - int j = mpGlyphs2Chars[ i ] - rArgs.mnMinCharPos; - if( j >= 0 ) - mpCharWidths[ j ] += mpGlyphAdvances[ i ]; - } - } - } -} - -// ----------------------------------------------------------------------- - -void Os2SalLayout::ApplyDXArray( const ImplLayoutArgs& rArgs ) -{ - // try to avoid disturbance of text flow for LSB rounding case; - const long* pDXArray = rArgs.mpDXArray; - - int i = 0; - long nOldWidth = mnBaseAdv; - for(; i < mnCharCount; ++i ) - { - int j = !mpChars2Glyphs ? i : mpChars2Glyphs[i]; - if( j >= 0 ) - { - nOldWidth += mpGlyphAdvances[ j ]; - int nDiff = nOldWidth - pDXArray[ i ]; - - // disabled because of #104768# - // works great for static text, but problems when typing - // if( nDiff>+1 || nDiff<-1 ) - // only bother with changing anything when something moved - if( nDiff != 0 ) - break; - } - } - if( i >= mnCharCount ) - return; - - if( !mpGlyphOrigAdvs ) - { - mpGlyphOrigAdvs = new int[ mnGlyphCount ]; - for( i = 0; i < mnGlyphCount; ++i ) - mpGlyphOrigAdvs[ i ] = mpGlyphAdvances[ i ]; - } - - mnWidth = mnBaseAdv; - for( i = 0; i < mnCharCount; ++i ) - { - int j = !mpChars2Glyphs ? i : mpChars2Glyphs[i]; - if( j >= 0 ) - mpGlyphAdvances[j] = pDXArray[i] - mnWidth; - mnWidth = pDXArray[i]; - } -} - -// ----------------------------------------------------------------------- - -void Os2SalLayout::MoveGlyph( int nStart, long nNewXPos ) -{ - if( nStart > mnGlyphCount ) - return; - - // calculate the current x-position of the requested glyph - // TODO: cache absolute positions - int nXPos = mnBaseAdv; - for( int i = 0; i < nStart; ++i ) - nXPos += mpGlyphAdvances[i]; - - // calculate the difference to the current glyph position - int nDelta = nNewXPos - nXPos; - - // adjust the width of the layout if it was already cached - if( mnWidth ) - mnWidth += nDelta; - - // depending on whether the requested glyph is leftmost in the layout - // adjust either the layout's or the requested glyph's relative position - if( nStart > 0 ) - mpGlyphAdvances[ nStart-1 ] += nDelta; - else - mnBaseAdv += nDelta; -} - -// ----------------------------------------------------------------------- - -void Os2SalLayout::DropGlyph( int nStart ) -{ - mpOutGlyphs[ nStart ] = DROPPED_OUTGLYPH; -} - -// ----------------------------------------------------------------------- - -void Os2SalLayout::Simplify( bool bIsBase ) -{ - // return early if no glyph has been dropped - int i = mnGlyphCount; - while( (--i >= 0) && (mpOutGlyphs[ i ] != DROPPED_OUTGLYPH) ); - if( i < 0 ) - return; - - // convert the layout to a sparse layout if it is not already - if( !mpGlyphs2Chars ) - { - mpGlyphs2Chars = new int[ mnGlyphCount ]; - mpCharWidths = new int[ mnCharCount ]; - // assertion: mnGlyphCount == mnCharCount - for( int k = 0; k < mnGlyphCount; ++k ) - { - mpGlyphs2Chars[ k ] = mnMinCharPos + k; - mpCharWidths[ k ] = mpGlyphAdvances[ k ]; - } - } - - // remove dropped glyphs that are rightmost in the layout - for( i = mnGlyphCount; --i >= 0; ) - { - if( mpOutGlyphs[ i ] != DROPPED_OUTGLYPH ) - break; - if( mnWidth ) - mnWidth -= mpGlyphAdvances[ i ]; - int nRelCharPos = mpGlyphs2Chars[ i ] - mnMinCharPos; - if( nRelCharPos >= 0 ) - mpCharWidths[ nRelCharPos ] = 0; - } - mnGlyphCount = i + 1; - - // keep original glyph widths around - if( !mpGlyphOrigAdvs ) - { - mpGlyphOrigAdvs = new int[ mnGlyphCount ]; - for( int k = 0; k < mnGlyphCount; ++k ) - mpGlyphOrigAdvs[ k ] = mpGlyphAdvances[ k ]; - } - - // remove dropped glyphs inside the layout - int nNewGC = 0; - for( i = 0; i < mnGlyphCount; ++i ) - { - if( mpOutGlyphs[ i ] == DROPPED_OUTGLYPH ) - { - // adjust relative position to last valid glyph - int nDroppedWidth = mpGlyphAdvances[ i ]; - mpGlyphAdvances[ i ] = 0; - if( nNewGC > 0 ) - mpGlyphAdvances[ nNewGC-1 ] += nDroppedWidth; - else - mnBaseAdv += nDroppedWidth; - - // zero the virtual char width for the char that has a fallback - int nRelCharPos = mpGlyphs2Chars[ i ] - mnMinCharPos; - if( nRelCharPos >= 0 ) - mpCharWidths[ nRelCharPos ] = 0; - } - else - { - if( nNewGC != i ) - { - // rearrange the glyph array to get rid of the dropped glyph - mpOutGlyphs[ nNewGC ] = mpOutGlyphs[ i ]; - mpGlyphAdvances[ nNewGC ] = mpGlyphAdvances[ i ]; - mpGlyphOrigAdvs[ nNewGC ] = mpGlyphOrigAdvs[ i ]; - mpGlyphs2Chars[ nNewGC ] = mpGlyphs2Chars[ i ]; - } - ++nNewGC; - } - } - - mnGlyphCount = nNewGC; - if( mnGlyphCount <= 0 ) - mnWidth = mnBaseAdv = 0; -} - -// ======================================================================= - -SalLayout* Os2SalGraphics::GetTextLayout( ImplLayoutArgs& rArgs, int nFallbackLevel ) -{ - Os2SalLayout* pLayout = NULL; - DBG_ASSERT( mpOs2FontEntry[nFallbackLevel], "WinSalGraphics mpWinFontEntry==NULL"); - - const ImplOs2FontData& rFontFace = *mpOs2FontData[ nFallbackLevel ]; - ImplOs2FontEntry& rFontInstance = *mpOs2FontEntry[ nFallbackLevel ]; - - { -#ifdef GCP_KERN_HACK - if( (rArgs.mnFlags & SAL_LAYOUT_KERNING_PAIRS) && !rFontInstance.HasKernData() ) - { - // TODO: directly cache kerning info in the rFontInstance - // TODO: get rid of kerning methods+data in WinSalGraphics object - GetKernPairs( 0, NULL ); - rFontInstance.SetKernData( mnFontKernPairCount, mpFontKernPairs ); - } -#endif // GCP_KERN_HACK - - pLayout = new Os2SalLayout( mhPS, 0, rFontFace, rFontInstance ); - } - - if( mfFontScale != 1.0 ) - pLayout->SetFontScale( mfFontScale ); - - return pLayout; -} - -// ======================================================================= - -ImplOs2FontEntry::ImplOs2FontEntry( ImplFontSelectData& rFSD ) -: ImplFontEntry( rFSD ), - maWidthMap( 512 ) -#ifdef GCP_KERN_HACK - ,mpKerningPairs( NULL ) - ,mnKerningPairs( -1 ) -#endif // GCP_KERN_HACK -{ -} - -// ----------------------------------------------------------------------- - -ImplOs2FontEntry::~ImplOs2FontEntry() -{ -#ifdef GCP_KERN_HACK - delete[] mpKerningPairs; -#endif // GCP_KERN_HACK -} - -// ----------------------------------------------------------------------- - -#ifdef GCP_KERN_HACK -bool ImplOs2FontEntry::HasKernData() const -{ - return (mnKerningPairs >= 0); -} - -// ----------------------------------------------------------------------- - -void ImplOs2FontEntry::SetKernData( int nPairCount, const KERNINGPAIRS* pPairData ) -{ - mnKerningPairs = nPairCount; - mpKerningPairs = new KERNINGPAIRS[ mnKerningPairs ]; - ::memcpy( mpKerningPairs, (const void*)pPairData, nPairCount*sizeof(KERNINGPAIRS) ); -} - -// ----------------------------------------------------------------------- - -int ImplOs2FontEntry::GetKerning( sal_Unicode cLeft, sal_Unicode cRight ) const -{ - int nKernAmount = 0; - if( mpKerningPairs ) - { - const KERNINGPAIRS aRefPair = { cLeft, cRight, 0 }; - const KERNINGPAIRS* pFirstPair = mpKerningPairs; - const KERNINGPAIRS* pEndPair = mpKerningPairs + mnKerningPairs; - const KERNINGPAIRS* pPair = std::lower_bound( pFirstPair, - pEndPair, aRefPair, ImplCmpKernData ); - if( (pPair != pEndPair) - && (pPair->sFirstChar == aRefPair.sFirstChar) - && (pPair->sSecondChar == aRefPair.sSecondChar) ) - nKernAmount = pPair->lKerningAmount; - } - - return nKernAmount; -} -#endif // GCP_KERN_HACK - -// ======================================================================= - -ImplFontData* ImplOs2FontData::Clone() const -{ - if( mpUnicodeMap ) - mpUnicodeMap->AddReference(); - ImplFontData* pClone = new ImplOs2FontData( *this ); - return pClone; -} - -// ----------------------------------------------------------------------- - -ImplFontEntry* ImplOs2FontData::CreateFontInstance( ImplFontSelectData& rFSD ) const -{ - ImplFontEntry* pEntry = new ImplOs2FontEntry( rFSD ); - return pEntry; -} - -// ======================================================================= - -/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |