/* -*- 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 #include #include #include #include #include #include #include #include #include #include #include "mtftools.hxx" #include #include using namespace ::com::sun::star; namespace cppcanvas { namespace tools { void initRenderState( rendering::RenderState& renderState, const ::cppcanvas::internal::OutDevState& outdevState ) { ::canvas::tools::initRenderState( renderState ); ::canvas::tools::setRenderStateTransform( renderState, outdevState.transform ); renderState.Clip = outdevState.xClipPoly; } ::Size getBaselineOffset( const ::cppcanvas::internal::OutDevState& outdevState, const VirtualDevice& rVDev ) { const ::FontMetric& aMetric = rVDev.GetFontMetric(); // calc offset for text output, the XCanvas always renders // baseline offset. switch( outdevState.textReferencePoint ) { case ALIGN_TOP: return ::Size( 0, aMetric.GetInternalLeading() + aMetric.GetAscent() ); default: ENSURE_OR_THROW( false, "tools::getBaselineOffset(): Unexpected TextAlign value" ); // FALLTHROUGH intended (to calm compiler warning - case won't happen) case ALIGN_BASELINE: return ::Size( 0, 0 ); case ALIGN_BOTTOM: return ::Size( 0, -aMetric.GetDescent() ); } } ::basegfx::B2DHomMatrix& calcLogic2PixelLinearTransform( ::basegfx::B2DHomMatrix& o_rMatrix, const VirtualDevice& rVDev ) { // select size value in the middle of the available range, // to have headroom both when map mode scales up, and when // it scales down. const ::Size aSizeLogic( 0x00010000L, 0x00010000L ); const ::Size aSizePixel( rVDev.LogicToPixel( aSizeLogic ) ); o_rMatrix = basegfx::utils::createScaleB2DHomMatrix( aSizePixel.Width() / static_cast(aSizeLogic.Width()), aSizePixel.Height() / static_cast(aSizeLogic.Height()) ); return o_rMatrix; } ::basegfx::B2DHomMatrix& calcLogic2PixelAffineTransform( ::basegfx::B2DHomMatrix& o_rMatrix, const VirtualDevice& rVDev ) { // retrieves scale calcLogic2PixelLinearTransform(o_rMatrix, rVDev); // translate according to curr map mode/pref map mode offset const ::Point aEmptyPoint; const ::Point& rTranslatedPoint( rVDev.LogicToPixel( aEmptyPoint )); o_rMatrix.translate(rTranslatedPoint.X(), rTranslatedPoint.Y()); return o_rMatrix; } bool modifyClip( rendering::RenderState& o_rRenderState, const struct ::cppcanvas::internal::OutDevState& rOutdevState, const CanvasSharedPtr& rCanvas, const ::basegfx::B2DPoint& rOffset, const ::basegfx::B2DVector* pScaling, const double* pRotation ) { const bool bOffsetting( !rOffset.equalZero() ); const bool bScaling( pScaling && !rtl::math::approxEqual(pScaling->getX(), 1.0) && !rtl::math::approxEqual(pScaling->getY(), 1.0) ); const bool bRotation( pRotation && *pRotation != 0.0 ); if( !bOffsetting && !bScaling && !bRotation ) return false; // nothing to do if( rOutdevState.clip.count() ) { // general polygon case ::basegfx::B2DPolyPolygon aLocalClip( rOutdevState.clip ); ::basegfx::B2DHomMatrix aTransform; if( bOffsetting ) aTransform.translate( -rOffset.getX(), -rOffset.getY() ); if( bScaling ) aTransform.scale( 1.0/pScaling->getX(), 1.0/pScaling->getY() ); if( bRotation ) aTransform.rotate( - *pRotation ); aLocalClip.transform( aTransform ); o_rRenderState.Clip = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon( rCanvas->getUNOCanvas()->getDevice(), aLocalClip ); return true; } else if( !rOutdevState.clipRect.IsEmpty() ) { // simple rect case const ::tools::Rectangle aLocalClipRect( rOutdevState.clipRect ); if( bRotation ) { // rotation involved - convert to polygon first, // then transform that ::basegfx::B2DPolygon aLocalClip( ::basegfx::utils::createPolygonFromRect( vcl::unotools::b2DRectangleFromRectangle(aLocalClipRect) ) ); ::basegfx::B2DHomMatrix aTransform; if( bOffsetting ) aTransform.translate( -rOffset.getX(), -rOffset.getY() ); if( bScaling ) aTransform.scale( 1.0/pScaling->getX(), 1.0/pScaling->getY() ); aTransform.rotate( - *pRotation ); aLocalClip.transform( aTransform ); o_rRenderState.Clip = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon( rCanvas->getUNOCanvas()->getDevice(), ::basegfx::B2DPolyPolygon( aLocalClip ) ); } else if( bScaling ) { // scale and offset - do it on the fly, have to // convert to float anyway. o_rRenderState.Clip = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon( rCanvas->getUNOCanvas()->getDevice(), ::basegfx::B2DPolyPolygon( ::basegfx::utils::createPolygonFromRect( ::basegfx::B2DRectangle( (aLocalClipRect.Left() - rOffset.getX())/pScaling->getX(), (aLocalClipRect.Top() - rOffset.getY())/pScaling->getY(), (aLocalClipRect.Right() - rOffset.getX())/pScaling->getX(), (aLocalClipRect.Bottom() - rOffset.getY())/pScaling->getY() ) ) ) ); } else { // offset only - do it on the fly, have to convert // to float anyway. o_rRenderState.Clip = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon( rCanvas->getUNOCanvas()->getDevice(), ::basegfx::B2DPolyPolygon( ::basegfx::utils::createPolygonFromRect( ::basegfx::B2DRectangle( aLocalClipRect.Left() - rOffset.getX(), aLocalClipRect.Top() - rOffset.getY(), aLocalClipRect.Right() - rOffset.getX(), aLocalClipRect.Bottom() - rOffset.getY() ) ) ) ); } return true; } // empty clip, nothing to do return false; } // create overline/underline/strikeout line info struct TextLineInfo createTextLineInfo( const ::VirtualDevice& rVDev, const ::cppcanvas::internal::OutDevState& rState ) { const bool bOldMode( rVDev.IsMapModeEnabled() ); // #i68512# Force metric regeneration with mapmode enabled // (prolly OutDev bug) rVDev.GetFontMetric(); // will restore map mode below const_cast< ::VirtualDevice& >(rVDev).EnableMapMode( false ); const ::FontMetric aMetric = rVDev.GetFontMetric(); TextLineInfo aTextInfo( (aMetric.GetDescent() + 2) / 4.0, ((aMetric.GetInternalLeading() + 1.5) / 3.0), (aMetric.GetInternalLeading() / 2.0) - aMetric.GetAscent(), aMetric.GetDescent() / 2.0, (aMetric.GetInternalLeading() - aMetric.GetAscent()) / 3.0, rState.textOverlineStyle, rState.textUnderlineStyle, rState.textStrikeoutStyle ); const_cast< ::VirtualDevice& >(rVDev).EnableMapMode( bOldMode ); return aTextInfo; } namespace { void appendWaveline( ::basegfx::B2DPolyPolygon& o_rPoly, const ::basegfx::B2DPoint& rStartPos, const double nStartOffset, const double nWidth, const double nHeight, sal_Int8 nLineStyle) { const double x(rStartPos.getX()); const double y(rStartPos.getY() + nStartOffset + nHeight); double nWaveWidth = nHeight * 10.6 * 0.25; // Offset for the double line. double nOffset = 0.0; if (nLineStyle == LINESTYLE_DOUBLEWAVE) nOffset = -nHeight * 0.5; else nWaveWidth *= 2.0; basegfx::B2DPolygon aLine; aLine.append(basegfx::B2DPoint(x, y + nOffset)); aLine.append(basegfx::B2DPoint(x + nWidth, y + nOffset)); o_rPoly.append(::basegfx::utils::createWaveline(aLine, nWaveWidth, nWaveWidth * 0.5)); if (nLineStyle == LINESTYLE_DOUBLEWAVE) { nOffset = nHeight * 1.2; basegfx::B2DPolygon aLine2; aLine2.append(basegfx::B2DPoint(x, y + nOffset)); aLine2.append(basegfx::B2DPoint(x + nWidth, y + nOffset)); o_rPoly.append(::basegfx::utils::createWaveline(aLine2, nWaveWidth, nWaveWidth * 0.5)); } } void appendRect( ::basegfx::B2DPolyPolygon& o_rPoly, const ::basegfx::B2DPoint& rStartPos, const double nX1, const double nY1, const double nX2, const double nY2 ) { const double x( rStartPos.getX() ); const double y( rStartPos.getY() ); o_rPoly.append( ::basegfx::utils::createPolygonFromRect( ::basegfx::B2DRectangle( x + nX1, y + nY1, x + nX2, y + nY2 ) ) ); } void appendRect( ::basegfx::B2DPolyPolygon& o_rPoly, const double nX1, const double nY1, const double nX2, const double nY2 ) { o_rPoly.append( ::basegfx::utils::createPolygonFromRect( ::basegfx::B2DRectangle( nX1, nY1, nX2, nY2 ) ) ); } bool appendDashes( ::basegfx::B2DPolyPolygon& o_rPoly, const double nX, double nY, const double nLineWidth, double nLineHeight, sal_Int8 nLineStyle, bool bIsOverline) { static const int aDottedArray[] = { 1, 1, 0}; // DOTTED LINE static const int aDotDashArray[] = { 1, 1, 4, 1, 0}; // DASHDOT static const int aDashDotDotArray[] = { 1, 1, 1, 1, 4, 1, 0}; // DASHDOTDOT static const int aDashedArray[] = { 5, 2, 0}; // DASHED LINE static const int aLongDashArray[] = { 7, 2, 0}; // LONGDASH const int *pArray = nullptr; bool bIsBold = false; switch(nLineStyle) { case LINESTYLE_BOLDDOTTED: bIsBold = true; [[fallthrough]]; case LINESTYLE_DOTTED: pArray = aDottedArray; break; case LINESTYLE_BOLDDASH: bIsBold = true; [[fallthrough]]; case LINESTYLE_DASH: pArray = aDashedArray; break; case LINESTYLE_BOLDLONGDASH: bIsBold = true; [[fallthrough]]; case LINESTYLE_LONGDASH: pArray = aLongDashArray; break; case LINESTYLE_BOLDDASHDOT: bIsBold = true; [[fallthrough]]; case LINESTYLE_DASHDOT: pArray = aDotDashArray; break; case LINESTYLE_BOLDDASHDOTDOT: bIsBold = true; [[fallthrough]]; case LINESTYLE_DASHDOTDOT: pArray = aDashDotDotArray; break; } if (!pArray) return false; if (bIsBold) { if (bIsOverline) nY -= nLineHeight; nLineHeight *= 2; } const double nEnd = nX + nLineWidth; sal_Int32 nIndex = 0; bool bAppend = true; double nX1 = nX; while(nX1 < nEnd) { if (pArray[nIndex] == 0) nIndex = 0; const double nX2 = std::min(nEnd, nX1 + pArray[nIndex] * nLineHeight); if (bAppend) appendRect(o_rPoly, nX1, nY, nX2, nY + nLineHeight); nX1 = nX2; ++nIndex; bAppend = !bAppend; } return true; } // create line actions for text such as underline and // strikeout void createOverlinePolyPolygon(::basegfx::B2DPolyPolygon& rTextLinesPolyPoly, const ::basegfx::B2DPoint& rStartPos, const double& rLineWidth, const TextLineInfo& rTextLineInfo) { switch( rTextLineInfo.mnOverlineStyle ) { case LINESTYLE_NONE: // nothing to do case LINESTYLE_DONTKNOW: break; case LINESTYLE_DOUBLEWAVE: case LINESTYLE_SMALLWAVE: case LINESTYLE_BOLDWAVE: case LINESTYLE_WAVE: appendWaveline( rTextLinesPolyPoly, rStartPos, rTextLineInfo.mnOverlineOffset, rLineWidth, rTextLineInfo.mnOverlineHeight, rTextLineInfo.mnOverlineStyle); break; case LINESTYLE_SINGLE: appendRect( rTextLinesPolyPoly, rStartPos, 0, rTextLineInfo.mnOverlineOffset, rLineWidth, rTextLineInfo.mnOverlineOffset + rTextLineInfo.mnOverlineHeight ); break; case LINESTYLE_BOLD: appendRect( rTextLinesPolyPoly, rStartPos, 0, rTextLineInfo.mnOverlineOffset - rTextLineInfo.mnOverlineHeight, rLineWidth, rTextLineInfo.mnOverlineOffset + rTextLineInfo.mnOverlineHeight ); break; case LINESTYLE_DOUBLE: appendRect( rTextLinesPolyPoly, rStartPos, 0, rTextLineInfo.mnOverlineOffset - rTextLineInfo.mnOverlineHeight * 2.0 , rLineWidth, rTextLineInfo.mnOverlineOffset - rTextLineInfo.mnOverlineHeight ); appendRect( rTextLinesPolyPoly, rStartPos, 0, rTextLineInfo.mnOverlineOffset + rTextLineInfo.mnOverlineHeight, rLineWidth, rTextLineInfo.mnOverlineOffset + rTextLineInfo.mnOverlineHeight * 2.0 ); break; default: if (!appendDashes( rTextLinesPolyPoly, rStartPos.getX(), rStartPos.getY() + rTextLineInfo.mnOverlineOffset, rLineWidth, rTextLineInfo.mnOverlineHeight, rTextLineInfo.mnOverlineStyle, true)) { ENSURE_OR_THROW( false, "::cppcanvas::internal::createTextLinesPolyPolygon(): Unexpected overline case" ); } } } void createUnderlinePolyPolygon(::basegfx::B2DPolyPolygon& rTextLinesPolyPoly, const ::basegfx::B2DPoint& rStartPos, const double& rLineWidth, const TextLineInfo& rTextLineInfo ) { switch( rTextLineInfo.mnUnderlineStyle ) { case LINESTYLE_NONE: // nothing to do case LINESTYLE_DONTKNOW: break; case LINESTYLE_DOUBLEWAVE: case LINESTYLE_SMALLWAVE: case LINESTYLE_BOLDWAVE: case LINESTYLE_WAVE: appendWaveline( rTextLinesPolyPoly, rStartPos, rTextLineInfo.mnUnderlineOffset, rLineWidth, rTextLineInfo.mnLineHeight, rTextLineInfo.mnUnderlineStyle); break; case LINESTYLE_SINGLE: appendRect( rTextLinesPolyPoly, rStartPos, 0, rTextLineInfo.mnUnderlineOffset, rLineWidth, rTextLineInfo.mnUnderlineOffset + rTextLineInfo.mnLineHeight ); break; case LINESTYLE_BOLD: appendRect( rTextLinesPolyPoly, rStartPos, 0, rTextLineInfo.mnUnderlineOffset, rLineWidth, rTextLineInfo.mnUnderlineOffset + 2*rTextLineInfo.mnLineHeight ); break; case LINESTYLE_DOUBLE: appendRect( rTextLinesPolyPoly, rStartPos, 0, rTextLineInfo.mnUnderlineOffset - rTextLineInfo.mnLineHeight, rLineWidth, rTextLineInfo.mnUnderlineOffset ); appendRect( rTextLinesPolyPoly, rStartPos, 0, rTextLineInfo.mnUnderlineOffset + 2*rTextLineInfo.mnLineHeight, rLineWidth, rTextLineInfo.mnUnderlineOffset + 3*rTextLineInfo.mnLineHeight ); break; default: if (!appendDashes( rTextLinesPolyPoly, rStartPos.getX(), rStartPos.getY() + rTextLineInfo.mnUnderlineOffset, rLineWidth, rTextLineInfo.mnLineHeight, rTextLineInfo.mnUnderlineStyle, false)) { ENSURE_OR_THROW( false, "::cppcanvas::internal::createTextLinesPolyPolygon(): Unexpected underline case" ); } } } void createStrikeoutPolyPolygon(::basegfx::B2DPolyPolygon& rTextLinesPolyPoly, const ::basegfx::B2DPoint& rStartPos, const double& rLineWidth, const TextLineInfo& rTextLineInfo) { switch( rTextLineInfo.mnStrikeoutStyle ) { case STRIKEOUT_NONE: // nothing to do case STRIKEOUT_DONTKNOW: break; case STRIKEOUT_SLASH: // TODO(Q1): we should handle this in the text layer case STRIKEOUT_X: break; case STRIKEOUT_SINGLE: appendRect( rTextLinesPolyPoly, rStartPos, 0, rTextLineInfo.mnStrikeoutOffset, rLineWidth, rTextLineInfo.mnStrikeoutOffset + rTextLineInfo.mnLineHeight ); break; case STRIKEOUT_BOLD: appendRect( rTextLinesPolyPoly, rStartPos, 0, rTextLineInfo.mnStrikeoutOffset, rLineWidth, rTextLineInfo.mnStrikeoutOffset + 2*rTextLineInfo.mnLineHeight ); break; case STRIKEOUT_DOUBLE: appendRect( rTextLinesPolyPoly, rStartPos, 0, rTextLineInfo.mnStrikeoutOffset - rTextLineInfo.mnLineHeight, rLineWidth, rTextLineInfo.mnStrikeoutOffset ); appendRect( rTextLinesPolyPoly, rStartPos, 0, rTextLineInfo.mnStrikeoutOffset + 2*rTextLineInfo.mnLineHeight, rLineWidth, rTextLineInfo.mnStrikeoutOffset + 3*rTextLineInfo.mnLineHeight ); break; default: ENSURE_OR_THROW( false, "::cppcanvas::internal::createTextLinesPolyPolygon(): Unexpected strikeout case" ); } } } ::basegfx::B2DPolyPolygon createTextLinesPolyPolygon( const ::basegfx::B2DPoint& rStartPos, const double& rLineWidth, const TextLineInfo& rTextLineInfo ) { // fill the polypolygon with all text lines ::basegfx::B2DPolyPolygon aTextLinesPolyPoly; createOverlinePolyPolygon(aTextLinesPolyPoly, rStartPos, rLineWidth, rTextLineInfo); createUnderlinePolyPolygon(aTextLinesPolyPoly, rStartPos, rLineWidth, rTextLineInfo); createStrikeoutPolyPolygon(aTextLinesPolyPoly, rStartPos, rLineWidth, rTextLineInfo); return aTextLinesPolyPoly; } ::basegfx::B2DRange calcDevicePixelBounds( const ::basegfx::B2DRange& rBounds, const rendering::ViewState& viewState, const rendering::RenderState& renderState ) { ::basegfx::B2DHomMatrix aTransform; ::canvas::tools::mergeViewAndRenderTransform( aTransform, viewState, renderState ); ::basegfx::B2DRange aTransformedBounds; return ::canvas::tools::calcTransformedRectBounds( aTransformedBounds, rBounds, aTransform ); } // create line actions for text such as underline and // strikeout ::basegfx::B2DPolyPolygon createTextLinesPolyPolygon( const double& rStartOffset, const double& rLineWidth, const TextLineInfo& rTextLineInfo ) { return createTextLinesPolyPolygon( ::basegfx::B2DPoint( rStartOffset, 0.0 ), rLineWidth, rTextLineInfo ); } void createTextLinesPolyPolygon( const double& rStartOffset, const double& rLineWidth, const TextLineInfo& rTextLineInfo, ::basegfx::B2DPolyPolygon& rOverlinePolyPoly, ::basegfx::B2DPolyPolygon& rUnderlinePolyPoly, ::basegfx::B2DPolyPolygon& rStrikeoutPolyPoly ) { ::basegfx::B2DPoint aStartPos(rStartOffset, 0.0); createOverlinePolyPolygon(rOverlinePolyPoly, aStartPos, rLineWidth, rTextLineInfo); createUnderlinePolyPolygon(rUnderlinePolyPoly, aStartPos, rLineWidth, rTextLineInfo); createStrikeoutPolyPolygon(rStrikeoutPolyPoly, aStartPos, rLineWidth, rTextLineInfo); } } } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */