support text underlining
This commit is contained in:
Herbert Duerr
parent
1389fccf9a
commit
b72eefb165
1 changed files with 175 additions and 5 deletions
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@ -4,9 +4,9 @@
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*
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* $RCSfile: textprimitive2d.cxx,v $
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*
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* $Revision: 1.6 $
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* $Revision: 1.7 $
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*
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* last change: $Author: hdu $ $Date: 2007-02-15 13:25:26 $
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* last change: $Author: hdu $ $Date: 2007-02-20 15:24:21 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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@ -81,6 +81,8 @@
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#include <basegfx/tools/canvastools.hxx>
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#endif
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#include <numeric>
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//////////////////////////////////////////////////////////////////////////////
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namespace drawinglayer
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@ -331,18 +333,186 @@ namespace drawinglayer
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{
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Primitive2DSequence TextComplexPortionPrimitive2D::createLocalDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const
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{
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Primitive2DSequence aRetval(1);
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Primitive2DSequence aRetval(3);
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// First create a simple text primitive and ignore other attributes
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aRetval[0] = new TextSimplePortionPrimitive2D(getTextTransform(), getText(), getDXArray(), getFontAttributes(), getFontColor());
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if( meFontUnderline != FONT_UNDERLINE_NONE )
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{
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basegfx::B2DVector aScale, aTranslate;
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double fRotate, fShearX;
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getTextTransform().decompose(aScale, aTranslate, fRotate, fShearX);
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basegfx::B2DHomMatrix aUnscaledTransform;
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aUnscaledTransform.rotate( fRotate );
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aUnscaledTransform.shearX( fShearX );
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aUnscaledTransform.translate( aTranslate.getX(), aTranslate.getY() );
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basegfx::B2DHomMatrix aUnrotatedTransform = getTextTransform();
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aUnrotatedTransform.rotate( -fRotate );
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TextLayouterDevice aTextLayouter;
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aTextLayouter.setFontAttributes(getFontAttributes(), aUnrotatedTransform );
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// const double fLineHeight = aTextLayouter.getTextHeight();
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double fUnderlineOffset = aTextLayouter.getUnderlineOffset();
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double fUnderlineHeight = aTextLayouter.getUnderlineHeight();
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// const double fStrikeoutOffset = aTextLayouter.getStrikeoutOffset();
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basegfx::tools::B2DLineJoin eLineJoin = basegfx::tools::B2DLINEJOIN_NONE;
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bool bDoubleLine = false;
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bool bWaveLine = false;
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const int* pDashDotArray = NULL;
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static const int aDottedArray[] = { 1, 1, 0}; // DOTTED LINE
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static const int aDashDotArray[] = { 1, 1, 4, 1, 0}; // DASHDOT
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static const int aDashDotDotArray[] = { 1, 1, 1, 1, 4, 1, 0}; // DASHDOTDOT
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static const int aDashedArray[] = { 5, 2, 0}; // DASHED LINE
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static const int aLongDashArray[] = { 7, 2, 0}; // LONGDASH
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// set Underline attribute
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switch( getFontUnderline() )
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{
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default:
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DBG_WARNING1( "DrawingLayer: Unknown underline attribute (%d)!", getFontUnderline() );
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// fall through
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case primitive2d::FONT_UNDERLINE_NONE:
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fUnderlineHeight = 0;
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break;
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case primitive2d::FONT_UNDERLINE_BOLD:
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fUnderlineHeight *= 2;
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// fall through
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case primitive2d::FONT_UNDERLINE_SINGLE:
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break;
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case primitive2d::FONT_UNDERLINE_DOUBLE:
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bDoubleLine = true;
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break;
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case primitive2d::FONT_UNDERLINE_BOLDDOTTED:
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fUnderlineHeight *= 2;
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// fall through
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case primitive2d::FONT_UNDERLINE_DOTTED:
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eLineJoin = basegfx::tools::B2DLINEJOIN_ROUND;
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pDashDotArray = aDottedArray;
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break;
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case primitive2d::FONT_UNDERLINE_BOLDDASH:
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fUnderlineHeight *= 2;
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// fall through
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case primitive2d::FONT_UNDERLINE_DASH:
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pDashDotArray = aDashedArray;
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break;
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case primitive2d::FONT_UNDERLINE_BOLDLONGDASH:
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fUnderlineHeight *= 2;
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// fall through
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case primitive2d::FONT_UNDERLINE_LONGDASH:
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pDashDotArray = aLongDashArray;
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break;
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case primitive2d::FONT_UNDERLINE_BOLDDASHDOT:
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fUnderlineHeight *= 2;
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// fall through
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case primitive2d::FONT_UNDERLINE_DASHDOT:
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pDashDotArray = aDashDotArray;
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break;
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case primitive2d::FONT_UNDERLINE_BOLDDASHDOTDOT:
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fUnderlineHeight *= 2;
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// fall through
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case primitive2d::FONT_UNDERLINE_DASHDOTDOT:
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eLineJoin = basegfx::tools::B2DLINEJOIN_ROUND;
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pDashDotArray = aDashDotDotArray;
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break;
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case primitive2d::FONT_UNDERLINE_SMALLWAVE:
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// TODO
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bWaveLine = true;
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break;
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case primitive2d::FONT_UNDERLINE_BOLDWAVE:
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fUnderlineHeight *= 2;
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// fall through
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case primitive2d::FONT_UNDERLINE_WAVE:
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// TODO
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bWaveLine = true;
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break;
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case primitive2d::FONT_UNDERLINE_DOUBLEWAVE:
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bWaveLine = true;
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bDoubleLine = true;
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break;
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}
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double fTextWidth = 0.0;
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if( getDXArray().empty() )
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fTextWidth = aTextLayouter.getTextWidth( getText(), 0/*TODO*/, getText().Len()/*TODO*/ );
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else
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fTextWidth = getDXArray().back() * aScale.getX();
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if( bDoubleLine )
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{
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fUnderlineOffset -= 0.50 * fUnderlineHeight;
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fUnderlineHeight *= 0.64;
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}
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basegfx::B2DPolygon aUnderline;
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::basegfx::B2DPoint aPoint( 0.0, fUnderlineOffset );
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aUnderline.append( aPoint );
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if( !bWaveLine )
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{
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// straight underline
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aUnderline.append( aPoint + ::basegfx::B2DPoint( fTextWidth, 0.0 ) );
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}
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else
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{
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// wavy underline
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basegfx::B2DPolygon& aWavePoly = aUnderline;
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double fWaveWidth = 4 * fUnderlineHeight;
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if( getFontUnderline() == primitive2d::FONT_UNDERLINE_SMALLWAVE )
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fWaveWidth *= 0.7;
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const double fWaveHeight = 0.5 * fWaveWidth;
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const ::basegfx::B2DPoint aCtrlOffset( fWaveWidth * 0.467308, fWaveHeight );
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for( double fPos = fWaveWidth; fPos < fTextWidth; fPos += fWaveWidth ) {
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// create a symmetrical wave using one cubic bezier curve
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// with y==0 for {x==0, x==0.5*fW or x==1.0*fW}
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// and ymin/ymax at {x=0.25*fW or 0.75*fW}
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const int n = aWavePoly.count();
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aWavePoly.setControlPointA( n-1, aPoint + aCtrlOffset );
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aWavePoly.append( aPoint += ::basegfx::B2DPoint( fWaveWidth, 0.0 ) );
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aWavePoly.setControlPointB( n-1, aPoint - aCtrlOffset );
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}
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// adjust stroke style
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eLineJoin = basegfx::tools::B2DLINEJOIN_ROUND;
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fUnderlineHeight *= 0.5;
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}
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const basegfx::BColor& rLineColor = getFontColor();
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attribute::StrokeAttribute aStrokeAttr( rLineColor, fUnderlineHeight, eLineJoin );
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if( pDashDotArray != NULL )
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{
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::std::vector< double > aDoubleArray;
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for( const int* p = pDashDotArray; *p; ++p )
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aDoubleArray.push_back( *p * fUnderlineHeight);
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const double fFullDashDotLen = ::std::accumulate(aDoubleArray.begin(), aDoubleArray.end(), 0.0);
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aStrokeAttr = attribute::StrokeAttribute( rLineColor,
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fUnderlineHeight, eLineJoin, aDoubleArray, fFullDashDotLen );
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}
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aUnderline.transform( aUnscaledTransform );
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aRetval[1] = new PolygonStrokePrimitive2D( aUnderline, aStrokeAttr );
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if( bDoubleLine )
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{
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// add another underline below the first underline
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const double fLineDist = (bWaveLine ? 3 : 2) * fUnderlineHeight;
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::basegfx::B2DPoint aOffsetPoint( 0.0, fLineDist );
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aUnscaledTransform.translate( -aTranslate.getX(), -aTranslate.getY() );
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aOffsetPoint = aUnscaledTransform * aOffsetPoint;
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basegfx::B2DHomMatrix aOffsetTransform;
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aOffsetTransform.translate( aOffsetPoint.getX(), aOffsetPoint.getY() );
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aUnderline.transform( aOffsetTransform );
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aRetval[2] = new PolygonStrokePrimitive2D( aUnderline, aStrokeAttr );
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}
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// TODO: need to take care of
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// -underline
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// -strikethrough
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// -emphasis mark
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// -relief (embosses/engraved)
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// -shadow
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// -outline
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// if( getWordLineMode() )
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// if( getUnderlineAbove() )
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}
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return aRetval;
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}
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