659db7d705
Change-Id: Ie9f5fbd21a6223520cbea3af6436beb407d7a88c Reviewed-on: https://gerrit.libreoffice.org/21477 Tested-by: Jenkins <ci@libreoffice.org> Reviewed-by: Chris Sherlock <chris.sherlock79@gmail.com>
511 lines
19 KiB
C++
511 lines
19 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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#include <sal/config.h>
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#include <basegfx/polygon/b2dpolygon.hxx>
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#include <basegfx/matrix/b2dhommatrix.hxx>
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#include <vcl/settings.hxx>
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#include "ctfonts.hxx"
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#include "impfont.hxx"
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#ifdef MACOSX
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#include "osx/saldata.hxx"
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#include "osx/salinst.h"
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#endif
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#include "fontinstance.hxx"
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#include "fontattributes.hxx"
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#include "PhysicalFontCollection.hxx"
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#include "quartz/salgdi.h"
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#include "quartz/utils.h"
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#include "sallayout.hxx"
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inline double toRadian(int nDegree)
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{
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return nDegree * (M_PI / 1800.0);
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}
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CoreTextStyle::CoreTextStyle( const FontSelectPattern& rFSD )
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: mpFontData( static_cast<CoreTextFontFace const *>(rFSD.mpFontData) )
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, mfFontStretch( 1.0 )
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, mfFontRotation( 0.0 )
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, mpStyleDict( nullptr )
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{
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const FontSelectPattern* const pReqFont = &rFSD;
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double fScaledFontHeight = pReqFont->mfExactHeight;
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// convert font rotation to radian
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mfFontRotation = toRadian(pReqFont->mnOrientation);
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// dummy matrix so we can use CGAffineTransformConcat() below
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CGAffineTransform aMatrix = CGAffineTransformMakeTranslation(0, 0);
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// handle font stretching if any
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if( (pReqFont->mnWidth != 0) && (pReqFont->mnWidth != pReqFont->mnHeight) )
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{
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mfFontStretch = (float)pReqFont->mnWidth / pReqFont->mnHeight;
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aMatrix = CGAffineTransformConcat(aMatrix, CGAffineTransformMakeScale(mfFontStretch, 1.0F));
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}
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// create the style object for CoreText font attributes
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static const CFIndex nMaxDictSize = 16; // TODO: does this really suffice?
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mpStyleDict = CFDictionaryCreateMutable( nullptr, nMaxDictSize,
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&kCFTypeDictionaryKeyCallBacks,
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&kCFTypeDictionaryValueCallBacks );
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CFBooleanRef pCFVertBool = pReqFont->mbVertical ? kCFBooleanTrue : kCFBooleanFalse;
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CFDictionarySetValue( mpStyleDict, kCTVerticalFormsAttributeName, pCFVertBool );
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// fake bold
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if ( (pReqFont->GetWeight() >= WEIGHT_BOLD) &&
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((mpFontData->GetWeight() < WEIGHT_SEMIBOLD) &&
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(mpFontData->GetWeight() != WEIGHT_DONTKNOW)) )
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{
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int nStroke = -lrint((3.5F * pReqFont->GetWeight()) / mpFontData->GetWeight());
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CFNumberRef rStroke = CFNumberCreate(nullptr, kCFNumberSInt32Type, &nStroke);
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CFDictionarySetValue(mpStyleDict, kCTStrokeWidthAttributeName, rStroke);
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}
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// fake italic
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if (((pReqFont->GetSlantType() == ITALIC_NORMAL) ||
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(pReqFont->GetSlantType() == ITALIC_OBLIQUE)) &&
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(mpFontData->GetSlantType() == ITALIC_NONE))
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{
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aMatrix = CGAffineTransformConcat(aMatrix, CGAffineTransformMake(1, 0, toRadian(120), 1, 0, 0));
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}
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CTFontDescriptorRef pFontDesc = reinterpret_cast<CTFontDescriptorRef>(mpFontData->GetFontId());
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CTFontRef pNewCTFont = CTFontCreateWithFontDescriptor( pFontDesc, fScaledFontHeight, &aMatrix );
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CFDictionarySetValue( mpStyleDict, kCTFontAttributeName, pNewCTFont );
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CFRelease( pNewCTFont);
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// allow delayed setting the font color, i.e. after the text layout
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CFDictionarySetValue( mpStyleDict, kCTForegroundColorFromContextAttributeName, kCFBooleanTrue );
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#if 0 // LastResort is implicit in CoreText's font cascading
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const void* aGFBDescriptors[] = { CTFontDescriptorCreateWithNameAndSize( CFSTR("LastResort"), 0) }; // TODO: use the full GFB list
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const int nGfbCount = sizeof(aGFBDescriptors) / sizeof(*aGFBDescriptors);
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CFArrayRef pGfbList = CFArrayCreate( NULL, aGFBDescriptors, nGfbCount, &kCFTypeArrayCallBacks);
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CFDictionaryAddValue( mpStyleDict, kCTFontCascadeListAttribute, pGfbList);
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CFRelease( pGfbList);
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#endif
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}
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CoreTextStyle::~CoreTextStyle()
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{
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if( mpStyleDict )
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CFRelease( mpStyleDict );
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}
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void CoreTextStyle::GetFontMetric( ImplFontMetricDataPtr& rxFontMetric ) const
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{
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// get the matching CoreText font handle
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// TODO: is it worth it to cache the CTFontRef in SetFont() and reuse it here?
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CTFontRef aCTFontRef = static_cast<CTFontRef>(CFDictionaryGetValue( mpStyleDict, kCTFontAttributeName ));
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const CGFloat fAscent = CTFontGetAscent( aCTFontRef );
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const CGFloat fCapHeight = CTFontGetCapHeight( aCTFontRef );
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rxFontMetric->SetAscent( lrint( fAscent ) );
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rxFontMetric->SetDescent( lrint( CTFontGetDescent( aCTFontRef )) );
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rxFontMetric->SetExternalLeading( lrint( CTFontGetLeading( aCTFontRef )) );
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rxFontMetric->SetInternalLeading( lrint( fAscent - fCapHeight ) );
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// since ImplFontMetricData::mnWidth is only used for stretching/squeezing fonts
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// setting this width to the pixel height of the fontsize is good enough
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// it also makes the calculation of the stretch factor simple
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rxFontMetric->SetWidth( lrint( CTFontGetSize( aCTFontRef ) * mfFontStretch) );
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// all CoreText fonts are scalable
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rxFontMetric->SetScalableFlag( true );
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rxFontMetric->SetTrueTypeFlag( true ); // Not sure, but this field is used only for Windows so far
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rxFontMetric->SetKernableFlag( true );
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}
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bool CoreTextStyle::GetGlyphBoundRect( sal_GlyphId aGlyphId, Rectangle& rRect ) const
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{
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CGGlyph nCGGlyph = aGlyphId & GF_IDXMASK;
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// XXX: this is broken if the glyph came from fallback font
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CTFontRef aCTFontRef = static_cast<CTFontRef>(CFDictionaryGetValue( mpStyleDict, kCTFontAttributeName ));
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SAL_WNODEPRECATED_DECLARATIONS_PUSH //TODO: 10.11 kCTFontDefaultOrientation
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const CTFontOrientation aFontOrientation = kCTFontDefaultOrientation; // TODO: horz/vert
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SAL_WNODEPRECATED_DECLARATIONS_POP
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const CGRect aCGRect = CTFontGetBoundingRectsForGlyphs( aCTFontRef, aFontOrientation, &nCGGlyph, nullptr, 1 );
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rRect.Left() = lrint( aCGRect.origin.x );
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rRect.Top() = lrint( aCGRect.origin.y );
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rRect.Right() = lrint( aCGRect.origin.x + aCGRect.size.width );
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rRect.Bottom() = lrint( aCGRect.origin.y + aCGRect.size.height );
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return true;
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}
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// callbacks from CTFontCreatePathForGlyph+CGPathApply for GetGlyphOutline()
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struct GgoData { basegfx::B2DPolygon maPolygon; basegfx::B2DPolyPolygon* mpPolyPoly; };
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static void MyCGPathApplierFunc( void* pData, const CGPathElement* pElement )
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{
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basegfx::B2DPolygon& rPolygon = static_cast<GgoData*>(pData)->maPolygon;
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const int nPointCount = rPolygon.count();
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switch( pElement->type )
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{
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case kCGPathElementCloseSubpath:
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case kCGPathElementMoveToPoint:
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if( nPointCount > 0 )
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{
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static_cast<GgoData*>(pData)->mpPolyPoly->append( rPolygon );
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rPolygon.clear();
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}
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// fall through for kCGPathElementMoveToPoint:
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if( pElement->type != kCGPathElementMoveToPoint )
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{
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break;
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}
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case kCGPathElementAddLineToPoint:
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rPolygon.append( basegfx::B2DPoint( +pElement->points[0].x, -pElement->points[0].y ) );
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break;
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case kCGPathElementAddCurveToPoint:
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rPolygon.append( basegfx::B2DPoint( +pElement->points[2].x, -pElement->points[2].y ) );
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rPolygon.setNextControlPoint( nPointCount - 1,
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basegfx::B2DPoint( pElement->points[0].x,
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-pElement->points[0].y ) );
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rPolygon.setPrevControlPoint( nPointCount + 0,
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basegfx::B2DPoint( pElement->points[1].x,
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-pElement->points[1].y ) );
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break;
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case kCGPathElementAddQuadCurveToPoint:
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{
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const basegfx::B2DPoint aStartPt = rPolygon.getB2DPoint( nPointCount-1 );
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const basegfx::B2DPoint aCtrPt1( (aStartPt.getX() + 2 * pElement->points[0].x) / 3.0,
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(aStartPt.getY() - 2 * pElement->points[0].y) / 3.0 );
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const basegfx::B2DPoint aCtrPt2( (+2 * pElement->points[0].x + pElement->points[1].x) / 3.0,
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(-2 * pElement->points[0].y - pElement->points[1].y) / 3.0 );
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rPolygon.append( basegfx::B2DPoint( +pElement->points[1].x, -pElement->points[1].y ) );
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rPolygon.setNextControlPoint( nPointCount-1, aCtrPt1 );
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rPolygon.setPrevControlPoint( nPointCount+0, aCtrPt2 );
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}
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break;
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}
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}
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bool CoreTextStyle::GetGlyphOutline( sal_GlyphId aGlyphId, basegfx::B2DPolyPolygon& rResult ) const
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{
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rResult.clear();
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CGGlyph nCGGlyph = aGlyphId & GF_IDXMASK;
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// XXX: this is broken if the glyph came from fallback font
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CTFontRef pCTFont = static_cast<CTFontRef>(CFDictionaryGetValue( mpStyleDict, kCTFontAttributeName ));
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CGPathRef xPath = CTFontCreatePathForGlyph( pCTFont, nCGGlyph, nullptr );
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if (!xPath)
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{
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return false;
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}
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GgoData aGgoData;
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aGgoData.mpPolyPoly = &rResult;
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CGPathApply( xPath, static_cast<void*>(&aGgoData), MyCGPathApplierFunc );
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#if 0 // TODO: does OSX ensure that the last polygon is always closed?
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const CGPathElement aClosingElement = { kCGPathElementCloseSubpath, NULL };
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MyCGPathApplierFunc( (void*)&aGgoData, &aClosingElement );
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#endif
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CFRelease( xPath );
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return true;
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}
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PhysicalFontFace* CoreTextFontFace::Clone() const
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{
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return new CoreTextFontFace( *this);
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}
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LogicalFontInstance* CoreTextFontFace::CreateFontInstance( /*const*/ FontSelectPattern& rFSD ) const
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{
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return new LogicalFontInstance( rFSD);
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}
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int CoreTextFontFace::GetFontTable( const char pTagName[5], unsigned char* pResultBuf ) const
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{
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DBG_ASSERT( pTagName[4]=='\0', "CoreTextFontFace::GetFontTable with invalid tagname!\n" );
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const CTFontTableTag nTagCode = (pTagName[0]<<24) + (pTagName[1]<<16) + (pTagName[2]<<8) + (pTagName[3]<<0);
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// get the raw table length
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CTFontDescriptorRef pFontDesc = reinterpret_cast<CTFontDescriptorRef>( GetFontId());
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CTFontRef rCTFont = CTFontCreateWithFontDescriptor( pFontDesc, 0.0, nullptr);
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const uint32_t opts( kCTFontTableOptionNoOptions );
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CFDataRef pDataRef = CTFontCopyTable( rCTFont, nTagCode, opts);
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CFRelease( rCTFont);
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if( !pDataRef)
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return 0;
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const CFIndex nByteLength = CFDataGetLength( pDataRef);
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// get the raw table data if requested
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if( pResultBuf && (nByteLength > 0))
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{
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const CFRange aFullRange = CFRangeMake( 0, nByteLength);
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CFDataGetBytes( pDataRef, aFullRange, reinterpret_cast<UInt8*>(pResultBuf));
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}
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CFRelease( pDataRef);
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return (int)nByteLength;
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}
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FontAttributes DevFontFromCTFontDescriptor( CTFontDescriptorRef pFD, bool* bFontEnabled )
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{
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// all CoreText fonts are device fonts that can rotate just fine
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FontAttributes rDFA;
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rDFA.SetOrientationFlag( true );
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rDFA.SetBuiltInFontFlag( true );
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rDFA.SetQuality( 0 );
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// reset the font attributes
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rDFA.SetFamilyType( FAMILY_DONTKNOW );
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rDFA.SetPitch( PITCH_VARIABLE );
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rDFA.SetWidthType( WIDTH_NORMAL );
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rDFA.SetWeight( WEIGHT_NORMAL );
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rDFA.SetItalic( ITALIC_NONE );
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rDFA.SetSymbolFlag( false );
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// all scalable fonts on this platform are subsettable
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rDFA.SetEmbeddableFlag( false );
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rDFA.SetSubsettableFlag( true );
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// get font name
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#ifdef MACOSX
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const OUString aUILang = Application::GetSettings().GetUILanguageTag().getLanguage();
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CFStringRef pUILang = CFStringCreateWithCharacters( kCFAllocatorDefault,
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reinterpret_cast<UniChar const *>(aUILang.getStr()), aUILang.getLength() );
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CFStringRef pLang = nullptr;
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CFStringRef pFamilyName = static_cast<CFStringRef>(
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CTFontDescriptorCopyLocalizedAttribute( pFD, kCTFontFamilyNameAttribute, &pLang ));
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if ( !pLang || ( CFStringCompare( pUILang, pLang, 0 ) != kCFCompareEqualTo ))
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{
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if(pFamilyName)
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{
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CFRelease( pFamilyName );
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}
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pFamilyName = static_cast<CFStringRef>(CTFontDescriptorCopyAttribute( pFD, kCTFontFamilyNameAttribute ));
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}
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#else
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// No "Application" on iOS. And it is unclear whether this code
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// snippet will actually ever get invoked on iOS anyway. So just
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// use the old code that uses a non-localized font name.
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CFStringRef pFamilyName = (CFStringRef)CTFontDescriptorCopyAttribute( pFD, kCTFontFamilyNameAttribute );
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#endif
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rDFA.SetFamilyName( GetOUString( pFamilyName ) );
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// get font style
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CFStringRef pStyleName = static_cast<CFStringRef>(CTFontDescriptorCopyAttribute( pFD, kCTFontStyleNameAttribute ));
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rDFA.SetStyleName( GetOUString( pStyleName ) );
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// get font-enabled status
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if( bFontEnabled )
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{
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int bEnabled = TRUE; // by default (and when we're on OS X < 10.6) it's "enabled"
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CFNumberRef pEnabled = static_cast<CFNumberRef>(CTFontDescriptorCopyAttribute( pFD, kCTFontEnabledAttribute ));
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CFNumberGetValue( pEnabled, kCFNumberIntType, &bEnabled );
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*bFontEnabled = bEnabled;
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}
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// get font attributes
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CFDictionaryRef pAttrDict = static_cast<CFDictionaryRef>(CTFontDescriptorCopyAttribute( pFD, kCTFontTraitsAttribute ));
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// get symbolic trait
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// TODO: use other traits such as MonoSpace/Condensed/Expanded or Vertical too
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SInt64 nSymbolTrait = 0;
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CFNumberRef pSymbolNum = nullptr;
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if( CFDictionaryGetValueIfPresent( pAttrDict, kCTFontSymbolicTrait, reinterpret_cast<const void**>(&pSymbolNum) ) )
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{
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CFNumberGetValue( pSymbolNum, kCFNumberSInt64Type, &nSymbolTrait );
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rDFA.SetSymbolFlag( ((nSymbolTrait & kCTFontClassMaskTrait) == kCTFontSymbolicClass) );
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}
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// get the font weight
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double fWeight = 0;
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CFNumberRef pWeightNum = static_cast<CFNumberRef>(CFDictionaryGetValue( pAttrDict, kCTFontWeightTrait ));
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CFNumberGetValue( pWeightNum, kCFNumberDoubleType, &fWeight );
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int nInt = WEIGHT_NORMAL;
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if( fWeight > 0 )
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{
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nInt = rint(WEIGHT_NORMAL + fWeight * ((WEIGHT_BLACK - WEIGHT_NORMAL)/0.68));
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if( nInt > WEIGHT_BLACK )
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{
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nInt = WEIGHT_BLACK;
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}
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}
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else if( fWeight < 0 )
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{
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nInt = rint(WEIGHT_NORMAL + fWeight * ((WEIGHT_NORMAL - WEIGHT_THIN)/0.9));
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if( nInt < WEIGHT_THIN )
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{
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nInt = WEIGHT_THIN;
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}
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}
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rDFA.SetWeight( (FontWeight)nInt );
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// get the font slant
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double fSlant = 0;
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CFNumberRef pSlantNum = static_cast<CFNumberRef>(CFDictionaryGetValue( pAttrDict, kCTFontSlantTrait ));
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CFNumberGetValue( pSlantNum, kCFNumberDoubleType, &fSlant );
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if( fSlant >= 0.035 )
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{
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rDFA.SetItalic( ITALIC_NORMAL );
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}
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// get width trait
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double fWidth = 0;
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CFNumberRef pWidthNum = static_cast<CFNumberRef>(CFDictionaryGetValue( pAttrDict, kCTFontWidthTrait ));
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CFNumberGetValue( pWidthNum, kCFNumberDoubleType, &fWidth );
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nInt = WIDTH_NORMAL;
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if( fWidth > 0 )
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{
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nInt = rint( WIDTH_NORMAL + fWidth * ((WIDTH_ULTRA_EXPANDED - WIDTH_NORMAL)/0.4));
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if( nInt > WIDTH_ULTRA_EXPANDED )
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{
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nInt = WIDTH_ULTRA_EXPANDED;
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}
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}
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else if( fWidth < 0 )
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{
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nInt = rint( WIDTH_NORMAL + fWidth * ((WIDTH_NORMAL - WIDTH_ULTRA_CONDENSED)/0.5));
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if( nInt < WIDTH_ULTRA_CONDENSED )
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{
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nInt = WIDTH_ULTRA_CONDENSED;
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}
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}
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rDFA.SetWidthType( (FontWidth)nInt );
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// release the attribute dict that we had copied
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CFRelease( pAttrDict );
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// TODO? also use the HEAD table if available to get more attributes
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// CFDataRef CTFontCopyTable( CTFontRef, kCTFontTableHead, /*kCTFontTableOptionNoOptions*/kCTFontTableOptionExcludeSynthetic );
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return rDFA;
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}
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static void CTFontEnumCallBack( const void* pValue, void* pContext )
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{
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CTFontDescriptorRef pFD = static_cast<CTFontDescriptorRef>(pValue);
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bool bFontEnabled;
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FontAttributes rDFA = DevFontFromCTFontDescriptor( pFD, &bFontEnabled );
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if( bFontEnabled)
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{
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const sal_IntPtr nFontId = reinterpret_cast<sal_IntPtr>(pValue);
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CoreTextFontFace* pFontData = new CoreTextFontFace( rDFA, nFontId );
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SystemFontList* pFontList = static_cast<SystemFontList*>(pContext);
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pFontList->AddFont( pFontData );
|
|
}
|
|
}
|
|
|
|
SystemFontList::SystemFontList()
|
|
: mpCTFontCollection( nullptr )
|
|
, mpCTFontArray( nullptr )
|
|
{}
|
|
|
|
SystemFontList::~SystemFontList()
|
|
{
|
|
CTFontContainer::const_iterator it = maFontContainer.begin();
|
|
for(; it != maFontContainer.end(); ++it )
|
|
{
|
|
delete (*it).second;
|
|
}
|
|
maFontContainer.clear();
|
|
|
|
if( mpCTFontArray )
|
|
{
|
|
CFRelease( mpCTFontArray );
|
|
}
|
|
if( mpCTFontCollection )
|
|
{
|
|
CFRelease( mpCTFontCollection );
|
|
}
|
|
}
|
|
|
|
void SystemFontList::AddFont( CoreTextFontFace* pFontData )
|
|
{
|
|
sal_IntPtr nFontId = pFontData->GetFontId();
|
|
maFontContainer[ nFontId ] = pFontData;
|
|
}
|
|
|
|
void SystemFontList::AnnounceFonts( PhysicalFontCollection& rFontCollection ) const
|
|
{
|
|
CTFontContainer::const_iterator it = maFontContainer.begin();
|
|
for(; it != maFontContainer.end(); ++it )
|
|
{
|
|
rFontCollection.Add( (*it).second->Clone() );
|
|
}
|
|
}
|
|
|
|
CoreTextFontFace* SystemFontList::GetFontDataFromId( sal_IntPtr nFontId ) const
|
|
{
|
|
CTFontContainer::const_iterator it = maFontContainer.find( nFontId );
|
|
if( it == maFontContainer.end() )
|
|
{
|
|
return nullptr;
|
|
}
|
|
return (*it).second;
|
|
}
|
|
|
|
bool SystemFontList::Init()
|
|
{
|
|
// enumerate available system fonts
|
|
static const int nMaxDictEntries = 8;
|
|
CFMutableDictionaryRef pCFDict = CFDictionaryCreateMutable( nullptr,
|
|
nMaxDictEntries,
|
|
&kCFTypeDictionaryKeyCallBacks,
|
|
&kCFTypeDictionaryValueCallBacks );
|
|
|
|
CFDictionaryAddValue( pCFDict, kCTFontCollectionRemoveDuplicatesOption, kCFBooleanTrue );
|
|
mpCTFontCollection = CTFontCollectionCreateFromAvailableFonts( pCFDict );
|
|
CFRelease( pCFDict );
|
|
mpCTFontArray = CTFontCollectionCreateMatchingFontDescriptors( mpCTFontCollection );
|
|
|
|
const int nFontCount = CFArrayGetCount( mpCTFontArray );
|
|
const CFRange aFullRange = CFRangeMake( 0, nFontCount );
|
|
CFArrayApplyFunction( mpCTFontArray, aFullRange, CTFontEnumCallBack, this );
|
|
|
|
return true;
|
|
}
|
|
|
|
SystemFontList* GetCoretextFontList()
|
|
{
|
|
SystemFontList* pList = new SystemFontList();
|
|
if( !pList->Init() )
|
|
{
|
|
delete pList;
|
|
return nullptr;
|
|
}
|
|
|
|
return pList;
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|