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-rw-r--r-- | drawinglayer/source/primitive2d/textbreakuphelper.cxx | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/drawinglayer/source/primitive2d/textbreakuphelper.cxx b/drawinglayer/source/primitive2d/textbreakuphelper.cxx new file mode 100644 index 000000000..5ca10ce63 --- /dev/null +++ b/drawinglayer/source/primitive2d/textbreakuphelper.cxx @@ -0,0 +1,276 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <drawinglayer/primitive2d/textbreakuphelper.hxx> +#include <drawinglayer/primitive2d/textdecoratedprimitive2d.hxx> +#include <com/sun/star/i18n/BreakIterator.hpp> +#include <comphelper/processfactory.hxx> +#include <com/sun/star/i18n/CharacterIteratorMode.hpp> +#include <com/sun/star/i18n/WordType.hpp> +#include <com/sun/star/i18n/CharType.hpp> + + +namespace drawinglayer::primitive2d +{ + TextBreakupHelper::TextBreakupHelper(const TextSimplePortionPrimitive2D& rSource) + : mrSource(rSource), + mbNoDXArray(false) + { + maDecTrans = mrSource.getTextTransform(); + mbNoDXArray = mrSource.getDXArray().empty(); + + if(mbNoDXArray) + { + // init TextLayouter when no dxarray + maTextLayouter.setFontAttribute( + mrSource.getFontAttribute(), + maDecTrans.getScale().getX(), + maDecTrans.getScale().getY(), + mrSource.getLocale()); + } + } + + TextBreakupHelper::~TextBreakupHelper() + { + } + + void TextBreakupHelper::breakupPortion(Primitive2DContainer& rTempResult, sal_Int32 nIndex, sal_Int32 nLength, bool bWordLineMode) + { + if(!(nLength && (nIndex != mrSource.getTextPosition() || nLength != mrSource.getTextLength()))) + return; + + // prepare values for new portion + basegfx::B2DHomMatrix aNewTransform; + std::vector< double > aNewDXArray; + const bool bNewStartIsNotOldStart(nIndex > mrSource.getTextPosition()); + + if(!mbNoDXArray) + { + // prepare new DXArray for the single word + aNewDXArray = std::vector< double >( + mrSource.getDXArray().begin() + (nIndex - mrSource.getTextPosition()), + mrSource.getDXArray().begin() + ((nIndex + nLength) - mrSource.getTextPosition())); + } + + if(bNewStartIsNotOldStart) + { + // needs to be moved to a new start position + double fOffset(0.0); + + if(mbNoDXArray) + { + // evaluate using TextLayouter + fOffset = maTextLayouter.getTextWidth(mrSource.getText(), mrSource.getTextPosition(), nIndex); + } + else + { + // get from DXArray + const sal_Int32 nIndex2(nIndex - mrSource.getTextPosition()); + fOffset = mrSource.getDXArray()[nIndex2 - 1]; + } + + // need offset without FontScale for building the new transformation. The + // new transformation will be multiplied with the current text transformation + // so FontScale would be double + double fOffsetNoScale(fOffset); + const double fFontScaleX(maDecTrans.getScale().getX()); + + if(!basegfx::fTools::equal(fFontScaleX, 1.0) + && !basegfx::fTools::equalZero(fFontScaleX)) + { + fOffsetNoScale /= fFontScaleX; + } + + // apply needed offset to transformation + aNewTransform.translate(fOffsetNoScale, 0.0); + + if(!mbNoDXArray) + { + // DXArray values need to be corrected with the offset, too. Here, + // take the scaled offset since the DXArray is scaled + const sal_uInt32 nArraySize(aNewDXArray.size()); + + for(sal_uInt32 a(0); a < nArraySize; a++) + { + aNewDXArray[a] -= fOffset; + } + } + } + + // add text transformation to new transformation + // coverity[swapped_arguments : FALSE] - this is in the correct order + aNewTransform *= maDecTrans.getB2DHomMatrix(); + + // callback to allow evtl. changes + const bool bCreate(allowChange(rTempResult.size(), aNewTransform, nIndex, nLength)); + + if(!bCreate) + return; + + // check if we have a decorated primitive as source + const TextDecoratedPortionPrimitive2D* pTextDecoratedPortionPrimitive2D = + dynamic_cast< const TextDecoratedPortionPrimitive2D* >(&mrSource); + + if(pTextDecoratedPortionPrimitive2D) + { + // create a TextDecoratedPortionPrimitive2D + rTempResult.push_back( + new TextDecoratedPortionPrimitive2D( + aNewTransform, + mrSource.getText(), + nIndex, + nLength, + std::move(aNewDXArray), + mrSource.getFontAttribute(), + mrSource.getLocale(), + mrSource.getFontColor(), + mrSource.getTextFillColor(), + + pTextDecoratedPortionPrimitive2D->getOverlineColor(), + pTextDecoratedPortionPrimitive2D->getTextlineColor(), + pTextDecoratedPortionPrimitive2D->getFontOverline(), + pTextDecoratedPortionPrimitive2D->getFontUnderline(), + pTextDecoratedPortionPrimitive2D->getUnderlineAbove(), + pTextDecoratedPortionPrimitive2D->getTextStrikeout(), + + // reset WordLineMode when BreakupUnit::Word is executed; else copy original + !bWordLineMode && pTextDecoratedPortionPrimitive2D->getWordLineMode(), + + pTextDecoratedPortionPrimitive2D->getTextEmphasisMark(), + pTextDecoratedPortionPrimitive2D->getEmphasisMarkAbove(), + pTextDecoratedPortionPrimitive2D->getEmphasisMarkBelow(), + pTextDecoratedPortionPrimitive2D->getTextRelief(), + pTextDecoratedPortionPrimitive2D->getShadow())); + } + else + { + // create a SimpleTextPrimitive + rTempResult.push_back( + new TextSimplePortionPrimitive2D( + aNewTransform, + mrSource.getText(), + nIndex, + nLength, + std::move(aNewDXArray), + mrSource.getFontAttribute(), + mrSource.getLocale(), + mrSource.getFontColor())); + } + } + + bool TextBreakupHelper::allowChange(sal_uInt32 /*nCount*/, basegfx::B2DHomMatrix& /*rNewTransform*/, sal_uInt32 /*nIndex*/, sal_uInt32 /*nLength*/) + { + return true; + } + + void TextBreakupHelper::breakup(BreakupUnit aBreakupUnit) + { + if(!mrSource.getTextLength()) + return; + + Primitive2DContainer aTempResult; + static css::uno::Reference< css::i18n::XBreakIterator > xBreakIterator; + + if(!xBreakIterator.is()) + { + css::uno::Reference< css::uno::XComponentContext > xContext( ::comphelper::getProcessComponentContext() ); + xBreakIterator = css::i18n::BreakIterator::create(xContext); + } + + const OUString& rTxt = mrSource.getText(); + const sal_Int32 nTextLength(mrSource.getTextLength()); + const css::lang::Locale& rLocale = mrSource.getLocale(); + const sal_Int32 nTextPosition(mrSource.getTextPosition()); + sal_Int32 nCurrent(nTextPosition); + + switch(aBreakupUnit) + { + case BreakupUnit::Character: + { + sal_Int32 nDone; + sal_Int32 nNextCellBreak(xBreakIterator->nextCharacters(rTxt, nTextPosition, rLocale, css::i18n::CharacterIteratorMode::SKIPCELL, 0, nDone)); + sal_Int32 a(nTextPosition); + + for(; a < nTextPosition + nTextLength; a++) + { + if(a == nNextCellBreak) + { + breakupPortion(aTempResult, nCurrent, a - nCurrent, false); + nCurrent = a; + nNextCellBreak = xBreakIterator->nextCharacters(rTxt, a, rLocale, css::i18n::CharacterIteratorMode::SKIPCELL, 1, nDone); + } + } + + breakupPortion(aTempResult, nCurrent, a - nCurrent, false); + break; + } + case BreakupUnit::Word: + { + css::i18n::Boundary nNextWordBoundary(xBreakIterator->getWordBoundary(rTxt, nTextPosition, rLocale, css::i18n::WordType::ANY_WORD, true)); + sal_Int32 a(nTextPosition); + + for(; a < nTextPosition + nTextLength; a++) + { + if(a == nNextWordBoundary.endPos) + { + if(a > nCurrent) + { + breakupPortion(aTempResult, nCurrent, a - nCurrent, true); + } + + nCurrent = a; + + // skip spaces (maybe enhanced with a bool later if needed) + { + const sal_Int32 nEndOfSpaces(xBreakIterator->endOfCharBlock(rTxt, a, rLocale, css::i18n::CharType::SPACE_SEPARATOR)); + + if(nEndOfSpaces > a) + { + nCurrent = nEndOfSpaces; + } + } + + nNextWordBoundary = xBreakIterator->getWordBoundary(rTxt, a + 1, rLocale, css::i18n::WordType::ANY_WORD, true); + } + } + + if(a > nCurrent) + { + breakupPortion(aTempResult, nCurrent, a - nCurrent, true); + } + break; + } + } + + mxResult = aTempResult; + } + + Primitive2DContainer TextBreakupHelper::extractResult(BreakupUnit aBreakupUnit) + { + if(mxResult.empty()) + { + breakup(aBreakupUnit); + } + + return std::move(mxResult); + } + +} // end of namespace + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |