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author | Chris Sherlock <chris.sherlock79@gmail.com> | 2014-04-14 23:20:53 +1000 |
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committer | Chris Sherlock <chris.sherlock79@gmail.com> | 2014-04-16 07:33:57 +1000 |
commit | 5a35cb3e7fdb67f4f75435ab8869f8d973ae5daf (patch) | |
tree | 85845a2524205726ab99d6db84a265eafd2721cd /vcl/source/outdev/hatch.cxx | |
parent | d4bf419884994cdc0966e40468d44b94b68bb4e5 (diff) |
Split outdev2.cxx
I have split outdev2.cxx into the following files:
+ alpha.cxx
+ bezier.cxx
+ bitmap.cxx
+ blend.cxx
+ gradient.cxx
+ hatch.cxx
+ pixel.cxx
+ polygon.cxx
+ line.cxx
+ polyline.cxx
+ rect.cxx
+ transparent.cxx
I have also moved all the DrawDev functions into outdev.cxx
Change-Id: Ica7057250526cd1ed680e5ec173c73265a586ea3
Diffstat (limited to 'vcl/source/outdev/hatch.cxx')
-rw-r--r-- | vcl/source/outdev/hatch.cxx | 406 |
1 files changed, 406 insertions, 0 deletions
diff --git a/vcl/source/outdev/hatch.cxx b/vcl/source/outdev/hatch.cxx new file mode 100644 index 000000000000..a5ea4f558069 --- /dev/null +++ b/vcl/source/outdev/hatch.cxx @@ -0,0 +1,406 @@ +/* -*- 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 <tools/line.hxx> + +#include <vcl/salbtype.hxx> +#include <vcl/hatch.hxx> +#include <vcl/virdev.hxx> +#include <vcl/outdev.hxx> +#include <vcl/settings.hxx> + +#include "../gdi/pdfwriter_impl.hxx" + +#include <boost/scoped_array.hpp> + +#define HATCH_MAXPOINTS 1024 + +extern "C" int SAL_CALL ImplHatchCmpFnc( const void* p1, const void* p2 ) +{ + const long nX1 = ( (Point*) p1 )->X(); + const long nX2 = ( (Point*) p2 )->X(); + const long nY1 = ( (Point*) p1 )->Y(); + const long nY2 = ( (Point*) p2 )->Y(); + + return ( nX1 > nX2 ? 1 : nX1 == nX2 ? nY1 > nY2 ? 1: nY1 == nY2 ? 0 : -1 : -1 ); +} + +void OutputDevice::DrawHatch( const PolyPolygon& rPolyPoly, const Hatch& rHatch ) +{ + + Hatch aHatch( rHatch ); + + if ( mnDrawMode & ( DRAWMODE_BLACKLINE | DRAWMODE_WHITELINE | + DRAWMODE_GRAYLINE | DRAWMODE_GHOSTEDLINE | + DRAWMODE_SETTINGSLINE ) ) + { + Color aColor( rHatch.GetColor() ); + + if ( mnDrawMode & DRAWMODE_BLACKLINE ) + aColor = Color( COL_BLACK ); + else if ( mnDrawMode & DRAWMODE_WHITELINE ) + aColor = Color( COL_WHITE ); + else if ( mnDrawMode & DRAWMODE_GRAYLINE ) + { + const sal_uInt8 cLum = aColor.GetLuminance(); + aColor = Color( cLum, cLum, cLum ); + } + else if( mnDrawMode & DRAWMODE_SETTINGSLINE ) + { + aColor = GetSettings().GetStyleSettings().GetFontColor(); + } + + if ( mnDrawMode & DRAWMODE_GHOSTEDLINE ) + { + aColor = Color( ( aColor.GetRed() >> 1 ) | 0x80, + ( aColor.GetGreen() >> 1 ) | 0x80, + ( aColor.GetBlue() >> 1 ) | 0x80); + } + + aHatch.SetColor( aColor ); + } + + if( mpMetaFile ) + mpMetaFile->AddAction( new MetaHatchAction( rPolyPoly, aHatch ) ); + + if( !IsDeviceOutputNecessary() || ImplIsRecordLayout() ) + return; + + if( !mpGraphics && !ImplGetGraphics() ) + return; + + if( mbInitClipRegion ) + ImplInitClipRegion(); + + if( mbOutputClipped ) + return; + + if( rPolyPoly.Count() ) + { + PolyPolygon aPolyPoly( LogicToPixel( rPolyPoly ) ); + GDIMetaFile* pOldMetaFile = mpMetaFile; + bool bOldMap = mbMap; + + aPolyPoly.Optimize( POLY_OPTIMIZE_NO_SAME ); + aHatch.SetDistance( ImplLogicWidthToDevicePixel( aHatch.GetDistance() ) ); + + mpMetaFile = NULL; + EnableMapMode( false ); + Push( PUSH_LINECOLOR ); + SetLineColor( aHatch.GetColor() ); + ImplInitLineColor(); + ImplDrawHatch( aPolyPoly, aHatch, false ); + Pop(); + EnableMapMode( bOldMap ); + mpMetaFile = pOldMetaFile; + } + + if( mpAlphaVDev ) + mpAlphaVDev->DrawHatch( rPolyPoly, rHatch ); +} + +void OutputDevice::AddHatchActions( const PolyPolygon& rPolyPoly, const Hatch& rHatch, + GDIMetaFile& rMtf ) +{ + + PolyPolygon aPolyPoly( rPolyPoly ); + aPolyPoly.Optimize( POLY_OPTIMIZE_NO_SAME | POLY_OPTIMIZE_CLOSE ); + + if( aPolyPoly.Count() ) + { + GDIMetaFile* pOldMtf = mpMetaFile; + + mpMetaFile = &rMtf; + mpMetaFile->AddAction( new MetaPushAction( PUSH_ALL ) ); + mpMetaFile->AddAction( new MetaLineColorAction( rHatch.GetColor(), true ) ); + ImplDrawHatch( aPolyPoly, rHatch, true ); + mpMetaFile->AddAction( new MetaPopAction() ); + mpMetaFile = pOldMtf; + } +} + +void OutputDevice::ImplDrawHatch( const PolyPolygon& rPolyPoly, const Hatch& rHatch, bool bMtf ) +{ + if(rPolyPoly.Count()) + { + // #i115630# ImplDrawHatch does not work with beziers included in the polypolygon, take care of that + bool bIsCurve(false); + + for(sal_uInt16 a(0); !bIsCurve && a < rPolyPoly.Count(); a++) + { + if(rPolyPoly[a].HasFlags()) + { + bIsCurve = true; + } + } + + if(bIsCurve) + { + OSL_ENSURE(false, "ImplDrawHatch does *not* support curves, falling back to AdaptiveSubdivide()..."); + PolyPolygon aPolyPoly; + + rPolyPoly.AdaptiveSubdivide(aPolyPoly); + ImplDrawHatch(aPolyPoly, rHatch, bMtf); + } + else + { + Rectangle aRect( rPolyPoly.GetBoundRect() ); + const long nLogPixelWidth = ImplDevicePixelToLogicWidth( 1 ); + const long nWidth = ImplDevicePixelToLogicWidth( std::max( ImplLogicWidthToDevicePixel( rHatch.GetDistance() ), 3L ) ); + boost::scoped_array<Point> pPtBuffer(new Point[ HATCH_MAXPOINTS ]); + Point aPt1, aPt2, aEndPt1; + Size aInc; + + // Single hatch + aRect.Left() -= nLogPixelWidth; aRect.Top() -= nLogPixelWidth; aRect.Right() += nLogPixelWidth; aRect.Bottom() += nLogPixelWidth; + ImplCalcHatchValues( aRect, nWidth, rHatch.GetAngle(), aPt1, aPt2, aInc, aEndPt1 ); + do + { + ImplDrawHatchLine( Line( aPt1, aPt2 ), rPolyPoly, pPtBuffer.get(), bMtf ); + aPt1.X() += aInc.Width(); aPt1.Y() += aInc.Height(); + aPt2.X() += aInc.Width(); aPt2.Y() += aInc.Height(); + } + while( ( aPt1.X() <= aEndPt1.X() ) && ( aPt1.Y() <= aEndPt1.Y() ) ); + + if( ( rHatch.GetStyle() == HATCH_DOUBLE ) || ( rHatch.GetStyle() == HATCH_TRIPLE ) ) + { + // Double hatch + ImplCalcHatchValues( aRect, nWidth, rHatch.GetAngle() + 900, aPt1, aPt2, aInc, aEndPt1 ); + do + { + ImplDrawHatchLine( Line( aPt1, aPt2 ), rPolyPoly, pPtBuffer.get(), bMtf ); + aPt1.X() += aInc.Width(); aPt1.Y() += aInc.Height(); + aPt2.X() += aInc.Width(); aPt2.Y() += aInc.Height(); + } + while( ( aPt1.X() <= aEndPt1.X() ) && ( aPt1.Y() <= aEndPt1.Y() ) ); + + if( rHatch.GetStyle() == HATCH_TRIPLE ) + { + // Triple hatch + ImplCalcHatchValues( aRect, nWidth, rHatch.GetAngle() + 450, aPt1, aPt2, aInc, aEndPt1 ); + do + { + ImplDrawHatchLine( Line( aPt1, aPt2 ), rPolyPoly, pPtBuffer.get(), bMtf ); + aPt1.X() += aInc.Width(); aPt1.Y() += aInc.Height(); + aPt2.X() += aInc.Width(); aPt2.Y() += aInc.Height(); + } + while( ( aPt1.X() <= aEndPt1.X() ) && ( aPt1.Y() <= aEndPt1.Y() ) ); + } + } + } + } +} + +void OutputDevice::ImplCalcHatchValues( const Rectangle& rRect, long nDist, sal_uInt16 nAngle10, + Point& rPt1, Point& rPt2, Size& rInc, Point& rEndPt1 ) +{ + Point aRef; + long nAngle = nAngle10 % 1800; + long nOffset = 0; + + if( nAngle > 900 ) + nAngle -= 1800; + + aRef = ( !IsRefPoint() ? rRect.TopLeft() : GetRefPoint() ); + + if( 0 == nAngle ) + { + rInc = Size( 0, nDist ); + rPt1 = rRect.TopLeft(); + rPt2 = rRect.TopRight(); + rEndPt1 = rRect.BottomLeft(); + + if( aRef.Y() <= rRect.Top() ) + nOffset = ( ( rRect.Top() - aRef.Y() ) % nDist ); + else + nOffset = ( nDist - ( ( aRef.Y() - rRect.Top() ) % nDist ) ); + + rPt1.Y() -= nOffset; + rPt2.Y() -= nOffset; + } + else if( 900 == nAngle ) + { + rInc = Size( nDist, 0 ); + rPt1 = rRect.TopLeft(); + rPt2 = rRect.BottomLeft(); + rEndPt1 = rRect.TopRight(); + + if( aRef.X() <= rRect.Left() ) + nOffset = ( rRect.Left() - aRef.X() ) % nDist; + else + nOffset = nDist - ( ( aRef.X() - rRect.Left() ) % nDist ); + + rPt1.X() -= nOffset; + rPt2.X() -= nOffset; + } + else if( nAngle >= -450 && nAngle <= 450 ) + { + const double fAngle = F_PI1800 * labs( nAngle ); + const double fTan = tan( fAngle ); + const long nYOff = FRound( ( rRect.Right() - rRect.Left() ) * fTan ); + long nPY; + + rInc = Size( 0, nDist = FRound( nDist / cos( fAngle ) ) ); + + if( nAngle > 0 ) + { + rPt1 = rRect.TopLeft(); + rPt2 = Point( rRect.Right(), rRect.Top() - nYOff ); + rEndPt1 = Point( rRect.Left(), rRect.Bottom() + nYOff ); + nPY = FRound( aRef.Y() - ( ( rPt1.X() - aRef.X() ) * fTan ) ); + } + else + { + rPt1 = rRect.TopRight(); + rPt2 = Point( rRect.Left(), rRect.Top() - nYOff ); + rEndPt1 = Point( rRect.Right(), rRect.Bottom() + nYOff ); + nPY = FRound( aRef.Y() + ( ( rPt1.X() - aRef.X() ) * fTan ) ); + } + + if( nPY <= rPt1.Y() ) + nOffset = ( rPt1.Y() - nPY ) % nDist; + else + nOffset = nDist - ( ( nPY - rPt1.Y() ) % nDist ); + + rPt1.Y() -= nOffset; + rPt2.Y() -= nOffset; + } + else + { + const double fAngle = F_PI1800 * labs( nAngle ); + const double fTan = tan( fAngle ); + const long nXOff = FRound( ( rRect.Bottom() - rRect.Top() ) / fTan ); + long nPX; + + rInc = Size( nDist = FRound( nDist / sin( fAngle ) ), 0 ); + + if( nAngle > 0 ) + { + rPt1 = rRect.TopLeft(); + rPt2 = Point( rRect.Left() - nXOff, rRect.Bottom() ); + rEndPt1 = Point( rRect.Right() + nXOff, rRect.Top() ); + nPX = FRound( aRef.X() - ( ( rPt1.Y() - aRef.Y() ) / fTan ) ); + } + else + { + rPt1 = rRect.BottomLeft(); + rPt2 = Point( rRect.Left() - nXOff, rRect.Top() ); + rEndPt1 = Point( rRect.Right() + nXOff, rRect.Bottom() ); + nPX = FRound( aRef.X() + ( ( rPt1.Y() - aRef.Y() ) / fTan ) ); + } + + if( nPX <= rPt1.X() ) + nOffset = ( rPt1.X() - nPX ) % nDist; + else + nOffset = nDist - ( ( nPX - rPt1.X() ) % nDist ); + + rPt1.X() -= nOffset; + rPt2.X() -= nOffset; + } +} + +void OutputDevice::ImplDrawHatchLine( const Line& rLine, const PolyPolygon& rPolyPoly, + Point* pPtBuffer, bool bMtf ) +{ + double fX, fY; + long nAdd, nPCounter = 0; + + for( long nPoly = 0, nPolyCount = rPolyPoly.Count(); nPoly < nPolyCount; nPoly++ ) + { + const Polygon& rPoly = rPolyPoly[ (sal_uInt16) nPoly ]; + + if( rPoly.GetSize() > 1 ) + { + Line aCurSegment( rPoly[ 0 ], Point() ); + + for( long i = 1, nCount = rPoly.GetSize(); i <= nCount; i++ ) + { + aCurSegment.SetEnd( rPoly[ (sal_uInt16)( i % nCount ) ] ); + nAdd = 0; + + if( rLine.Intersection( aCurSegment, fX, fY ) ) + { + if( ( fabs( fX - aCurSegment.GetStart().X() ) <= 0.0000001 ) && + ( fabs( fY - aCurSegment.GetStart().Y() ) <= 0.0000001 ) ) + { + const Line aPrevSegment( rPoly[ (sal_uInt16)( ( i > 1 ) ? ( i - 2 ) : ( nCount - 1 ) ) ], aCurSegment.GetStart() ); + const double fPrevDistance = rLine.GetDistance( aPrevSegment.GetStart() ); + const double fCurDistance = rLine.GetDistance( aCurSegment.GetEnd() ); + + if( ( fPrevDistance <= 0.0 && fCurDistance > 0.0 ) || + ( fPrevDistance > 0.0 && fCurDistance < 0.0 ) ) + { + nAdd = 1; + } + } + else if( ( fabs( fX - aCurSegment.GetEnd().X() ) <= 0.0000001 ) && + ( fabs( fY - aCurSegment.GetEnd().Y() ) <= 0.0000001 ) ) + { + const Line aNextSegment( aCurSegment.GetEnd(), rPoly[ (sal_uInt16)( ( i + 1 ) % nCount ) ] ); + + if( ( fabs( rLine.GetDistance( aNextSegment.GetEnd() ) ) <= 0.0000001 ) && + ( rLine.GetDistance( aCurSegment.GetStart() ) > 0.0 ) ) + { + nAdd = 1; + } + } + else + nAdd = 1; + + if( nAdd ) + pPtBuffer[ nPCounter++ ] = Point( FRound( fX ), FRound( fY ) ); + } + + aCurSegment.SetStart( aCurSegment.GetEnd() ); + } + } + } + + if( nPCounter > 1 ) + { + qsort( pPtBuffer, nPCounter, sizeof( Point ), ImplHatchCmpFnc ); + + if( nPCounter & 1 ) + nPCounter--; + + if( bMtf ) + { + for( long i = 0; i < nPCounter; i += 2 ) + mpMetaFile->AddAction( new MetaLineAction( pPtBuffer[ i ], pPtBuffer[ i + 1 ] ) ); + } + else + { + for( long i = 0; i < nPCounter; i += 2 ) + { + if( mpPDFWriter ) + { + mpPDFWriter->drawLine( pPtBuffer[ i ], pPtBuffer[ i+1 ] ); + } + else + { + const Point aPt1( ImplLogicToDevicePixel( pPtBuffer[ i ] ) ); + const Point aPt2( ImplLogicToDevicePixel( pPtBuffer[ i + 1 ] ) ); + mpGraphics->DrawLine( aPt1.X(), aPt1.Y(), aPt2.X(), aPt2.Y(), this ); + } + } + } + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |