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-rw-r--r--vcl/source/outdev/hatch.cxx409
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diff --git a/vcl/source/outdev/hatch.cxx b/vcl/source/outdev/hatch.cxx
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+/* -*- 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 <cassert>
+
+#include <osl/diagnose.h>
+#include <tools/line.hxx>
+#include <tools/helpers.hxx>
+
+#include <vcl/hatch.hxx>
+#include <vcl/metaact.hxx>
+#include <vcl/settings.hxx>
+#include <vcl/outdev.hxx>
+#include <vcl/virdev.hxx>
+
+#include <salgdi.hxx>
+
+#include <memory>
+
+#define HATCH_MAXPOINTS 1024
+
+extern "C" {
+
+static int HatchCmpFnc( const void* p1, const void* p2 )
+{
+ const long nX1 = static_cast<Point const *>(p1)->X();
+ const long nX2 = static_cast<Point const *>(p2)->X();
+ const long nY1 = static_cast<Point const *>(p1)->Y();
+ const long nY2 = static_cast<Point const *>(p2)->Y();
+
+ return ( nX1 > nX2 ? 1 : nX1 == nX2 ? nY1 > nY2 ? 1: nY1 == nY2 ? 0 : -1 : -1 );
+}
+
+}
+
+void OutputDevice::DrawHatch( const tools::PolyPolygon& rPolyPoly, const Hatch& rHatch )
+{
+ assert(!is_double_buffered_window());
+
+ Hatch aHatch( rHatch );
+
+ if ( mnDrawMode & ( DrawModeFlags::BlackLine | DrawModeFlags::WhiteLine |
+ DrawModeFlags::GrayLine |
+ DrawModeFlags::SettingsLine ) )
+ {
+ Color aColor( rHatch.GetColor() );
+
+ if ( mnDrawMode & DrawModeFlags::BlackLine )
+ aColor = COL_BLACK;
+ else if ( mnDrawMode & DrawModeFlags::WhiteLine )
+ aColor = COL_WHITE;
+ else if ( mnDrawMode & DrawModeFlags::GrayLine )
+ {
+ const sal_uInt8 cLum = aColor.GetLuminance();
+ aColor = Color( cLum, cLum, cLum );
+ }
+ else if( mnDrawMode & DrawModeFlags::SettingsLine )
+ {
+ aColor = GetSettings().GetStyleSettings().GetFontColor();
+ }
+
+ aHatch.SetColor( aColor );
+ }
+
+ if( mpMetaFile )
+ mpMetaFile->AddAction( new MetaHatchAction( rPolyPoly, aHatch ) );
+
+ if( !IsDeviceOutputNecessary() || ImplIsRecordLayout() )
+ return;
+
+ if( !mpGraphics && !AcquireGraphics() )
+ return;
+
+ if( mbInitClipRegion )
+ InitClipRegion();
+
+ if( mbOutputClipped )
+ return;
+
+ if( rPolyPoly.Count() )
+ {
+ tools::PolyPolygon aPolyPoly( LogicToPixel( rPolyPoly ) );
+ GDIMetaFile* pOldMetaFile = mpMetaFile;
+ bool bOldMap = mbMap;
+
+ aPolyPoly.Optimize( PolyOptimizeFlags::NO_SAME );
+ aHatch.SetDistance( ImplLogicWidthToDevicePixel( aHatch.GetDistance() ) );
+
+ mpMetaFile = nullptr;
+ EnableMapMode( false );
+ Push( PushFlags::LINECOLOR );
+ SetLineColor( aHatch.GetColor() );
+ InitLineColor();
+ DrawHatch( aPolyPoly, aHatch, false );
+ Pop();
+ EnableMapMode( bOldMap );
+ mpMetaFile = pOldMetaFile;
+ }
+
+ if( mpAlphaVDev )
+ mpAlphaVDev->DrawHatch( rPolyPoly, rHatch );
+}
+
+void OutputDevice::AddHatchActions( const tools::PolyPolygon& rPolyPoly, const Hatch& rHatch,
+ GDIMetaFile& rMtf )
+{
+
+ tools::PolyPolygon aPolyPoly( rPolyPoly );
+ aPolyPoly.Optimize( PolyOptimizeFlags::NO_SAME | PolyOptimizeFlags::CLOSE );
+
+ if( aPolyPoly.Count() )
+ {
+ GDIMetaFile* pOldMtf = mpMetaFile;
+
+ mpMetaFile = &rMtf;
+ mpMetaFile->AddAction( new MetaPushAction( PushFlags::ALL ) );
+ mpMetaFile->AddAction( new MetaLineColorAction( rHatch.GetColor(), true ) );
+ DrawHatch( aPolyPoly, rHatch, true );
+ mpMetaFile->AddAction( new MetaPopAction() );
+ mpMetaFile = pOldMtf;
+ }
+}
+
+void OutputDevice::DrawHatch( const tools::PolyPolygon& rPolyPoly, const Hatch& rHatch, bool bMtf )
+{
+ assert(!is_double_buffered_window());
+
+ if(rPolyPoly.Count())
+ {
+ // #i115630# DrawHatch 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, "DrawHatch does *not* support curves, falling back to AdaptiveSubdivide()...");
+ tools::PolyPolygon aPolyPoly;
+
+ rPolyPoly.AdaptiveSubdivide(aPolyPoly);
+ DrawHatch(aPolyPoly, rHatch, bMtf);
+ }
+ else
+ {
+ tools::Rectangle aRect( rPolyPoly.GetBoundRect() );
+ const long nLogPixelWidth = ImplDevicePixelToLogicWidth( 1 );
+ const long nWidth = ImplDevicePixelToLogicWidth( std::max( ImplLogicWidthToDevicePixel( rHatch.GetDistance() ), 3L ) );
+ std::unique_ptr<Point[]> pPtBuffer(new Point[ HATCH_MAXPOINTS ]);
+ Point aPt1, aPt2, aEndPt1;
+ Size aInc;
+
+ // Single hatch
+ aRect.AdjustLeft( -nLogPixelWidth ); aRect.AdjustTop( -nLogPixelWidth ); aRect.AdjustRight(nLogPixelWidth ); aRect.AdjustBottom(nLogPixelWidth );
+ CalcHatchValues( aRect, nWidth, rHatch.GetAngle(), aPt1, aPt2, aInc, aEndPt1 );
+ do
+ {
+ DrawHatchLine( tools::Line( aPt1, aPt2 ), rPolyPoly, pPtBuffer.get(), bMtf );
+ aPt1.AdjustX(aInc.Width() ); aPt1.AdjustY(aInc.Height() );
+ aPt2.AdjustX(aInc.Width() ); aPt2.AdjustY(aInc.Height() );
+ }
+ while( ( aPt1.X() <= aEndPt1.X() ) && ( aPt1.Y() <= aEndPt1.Y() ) );
+
+ if( ( rHatch.GetStyle() == HatchStyle::Double ) || ( rHatch.GetStyle() == HatchStyle::Triple ) )
+ {
+ // Double hatch
+ CalcHatchValues( aRect, nWidth, rHatch.GetAngle() + 900, aPt1, aPt2, aInc, aEndPt1 );
+ do
+ {
+ DrawHatchLine( tools::Line( aPt1, aPt2 ), rPolyPoly, pPtBuffer.get(), bMtf );
+ aPt1.AdjustX(aInc.Width() ); aPt1.AdjustY(aInc.Height() );
+ aPt2.AdjustX(aInc.Width() ); aPt2.AdjustY(aInc.Height() );
+ }
+ while( ( aPt1.X() <= aEndPt1.X() ) && ( aPt1.Y() <= aEndPt1.Y() ) );
+
+ if( rHatch.GetStyle() == HatchStyle::Triple )
+ {
+ // Triple hatch
+ CalcHatchValues( aRect, nWidth, rHatch.GetAngle() + 450, aPt1, aPt2, aInc, aEndPt1 );
+ do
+ {
+ DrawHatchLine( tools::Line( aPt1, aPt2 ), rPolyPoly, pPtBuffer.get(), bMtf );
+ aPt1.AdjustX(aInc.Width() ); aPt1.AdjustY(aInc.Height() );
+ aPt2.AdjustX(aInc.Width() ); aPt2.AdjustY(aInc.Height() );
+ }
+ while( ( aPt1.X() <= aEndPt1.X() ) && ( aPt1.Y() <= aEndPt1.Y() ) );
+ }
+ }
+ }
+ }
+}
+
+void OutputDevice::CalcHatchValues( const tools::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.AdjustY( -nOffset );
+ rPt2.AdjustY( -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.AdjustX( -nOffset );
+ rPt2.AdjustX( -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;
+
+ nDist = FRound( nDist / cos( fAngle ) );
+ rInc = Size( 0, nDist );
+
+ 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.AdjustY( -nOffset );
+ rPt2.AdjustY( -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;
+
+ nDist = FRound( nDist / sin( fAngle ) );
+ rInc = Size( nDist, 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.AdjustX( -nOffset );
+ rPt2.AdjustX( -nOffset );
+ }
+}
+
+void OutputDevice::DrawHatchLine( const tools::Line& rLine, const tools::PolyPolygon& rPolyPoly,
+ Point* pPtBuffer, bool bMtf )
+{
+ assert(!is_double_buffered_window());
+
+ double fX, fY;
+ long nAdd, nPCounter = 0;
+
+ for( long nPoly = 0, nPolyCount = rPolyPoly.Count(); nPoly < nPolyCount; nPoly++ )
+ {
+ const tools::Polygon& rPoly = rPolyPoly[ static_cast<sal_uInt16>(nPoly) ];
+
+ if( rPoly.GetSize() > 1 )
+ {
+ tools::Line aCurSegment( rPoly[ 0 ], Point() );
+
+ for( long i = 1, nCount = rPoly.GetSize(); i <= nCount; i++ )
+ {
+ aCurSegment.SetEnd( rPoly[ static_cast<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 tools::Line aPrevSegment( rPoly[ static_cast<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 tools::Line aNextSegment( aCurSegment.GetEnd(), rPoly[ static_cast<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 ), HatchCmpFnc );
+
+ 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 )
+ DrawHatchLine_DrawLine(pPtBuffer[i], pPtBuffer[i+1]);
+ }
+ }
+}
+
+void OutputDevice::DrawHatchLine_DrawLine(const Point& rStartPoint, const Point& rEndPoint)
+{
+ Point aPt1{ImplLogicToDevicePixel(rStartPoint)}, aPt2{ImplLogicToDevicePixel(rEndPoint)};
+ mpGraphics->DrawLine(aPt1.X(), aPt1.Y(), aPt2.X(), aPt2.Y(), this);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 19:38:41 +0000