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Diffstat (limited to 'svx/source/svdraw/polypolygoneditor.cxx')
| -rw-r--r-- | svx/source/svdraw/polypolygoneditor.cxx | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/svx/source/svdraw/polypolygoneditor.cxx b/svx/source/svdraw/polypolygoneditor.cxx new file mode 100644 index 000000000..1f82f0436 --- /dev/null +++ b/svx/source/svdraw/polypolygoneditor.cxx @@ -0,0 +1,182 @@ +/* -*- 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 <basegfx/polygon/b2dpolygon.hxx> +#include <basegfx/polygon/b2dpolygontools.hxx> + +#include <svx/polypolygoneditor.hxx> + +namespace sdr { + +PolyPolygonEditor::PolyPolygonEditor( const basegfx::B2DPolyPolygon& rPolyPolygon) +: maPolyPolygon( rPolyPolygon ) +{ +} + +bool PolyPolygonEditor::DeletePoints( const std::set< sal_uInt16 >& rAbsPoints ) +{ + bool bPolyPolyChanged = false; + + std::set< sal_uInt16 >::const_reverse_iterator aIter( rAbsPoints.rbegin() ); + for( ; aIter != rAbsPoints.rend(); ++aIter ) + { + sal_uInt32 nPoly, nPnt; + if( GetRelativePolyPoint(maPolyPolygon,(*aIter), nPoly, nPnt) ) + { + // remove point + basegfx::B2DPolygon aCandidate(maPolyPolygon.getB2DPolygon(nPoly)); + + aCandidate.remove(nPnt); + + + if( aCandidate.count() < 2 ) + { + maPolyPolygon.remove(nPoly); + } + else + { + maPolyPolygon.setB2DPolygon(nPoly, aCandidate); + } + + bPolyPolyChanged = true; + } + } + + return bPolyPolyChanged; +} + +bool PolyPolygonEditor::SetSegmentsKind(SdrPathSegmentKind eKind, const std::set< sal_uInt16 >& rAbsPoints ) +{ + bool bPolyPolyChanged = false; + + std::set< sal_uInt16 >::const_reverse_iterator aIter( rAbsPoints.rbegin() ); + for( ; aIter != rAbsPoints.rend(); ++aIter ) + { + sal_uInt32 nPolyNum, nPntNum; + + if(PolyPolygonEditor::GetRelativePolyPoint(maPolyPolygon, (*aIter), nPolyNum, nPntNum)) + { + // do change at aNewPolyPolygon. Take a look at edge. + basegfx::B2DPolygon aCandidate(maPolyPolygon.getB2DPolygon(nPolyNum)); + const sal_uInt32 nCount(aCandidate.count()); + + if(nCount && (nPntNum + 1 < nCount || aCandidate.isClosed())) + { + bool bCandidateChanged(false); + + // it's a valid edge, check control point usage + const sal_uInt32 nNextIndex((nPntNum + 1) % nCount); + const bool bContolUsed(aCandidate.areControlPointsUsed() + && (aCandidate.isNextControlPointUsed(nPntNum) || aCandidate.isPrevControlPointUsed(nNextIndex))); + + if(bContolUsed) + { + if(SdrPathSegmentKind::Toggle == eKind || SdrPathSegmentKind::Line == eKind) + { + // remove control + aCandidate.resetNextControlPoint(nPntNum); + aCandidate.resetPrevControlPoint(nNextIndex); + bCandidateChanged = true; + } + } + else + { + if(SdrPathSegmentKind::Toggle == eKind || SdrPathSegmentKind::Curve == eKind) + { + // add control + const basegfx::B2DPoint aStart(aCandidate.getB2DPoint(nPntNum)); + const basegfx::B2DPoint aEnd(aCandidate.getB2DPoint(nNextIndex)); + + aCandidate.setNextControlPoint(nPntNum, interpolate(aStart, aEnd, (1.0 / 3.0))); + aCandidate.setPrevControlPoint(nNextIndex, interpolate(aStart, aEnd, (2.0 / 3.0))); + bCandidateChanged = true; + } + } + + if(bCandidateChanged) + { + maPolyPolygon.setB2DPolygon(nPolyNum, aCandidate); + bPolyPolyChanged = true; + } + } + } + } + + return bPolyPolyChanged; +} + +bool PolyPolygonEditor::SetPointsSmooth( basegfx::B2VectorContinuity eFlags, const std::set< sal_uInt16 >& rAbsPoints) +{ + bool bPolyPolygonChanged(false); + + std::set< sal_uInt16 >::const_reverse_iterator aIter( rAbsPoints.rbegin() ); + for( ; aIter != rAbsPoints.rend(); ++aIter ) + { + sal_uInt32 nPolyNum, nPntNum; + + if(PolyPolygonEditor::GetRelativePolyPoint(maPolyPolygon, (*aIter), nPolyNum, nPntNum)) + { + // do change at aNewPolyPolygon... + basegfx::B2DPolygon aCandidate(maPolyPolygon.getB2DPolygon(nPolyNum)); + + // set continuity in point, make sure there is a curve + bool bPolygonChanged = basegfx::utils::expandToCurveInPoint(aCandidate, nPntNum); + bPolygonChanged |= basegfx::utils::setContinuityInPoint(aCandidate, nPntNum, eFlags); + + if(bPolygonChanged) + { + maPolyPolygon.setB2DPolygon(nPolyNum, aCandidate); + bPolyPolygonChanged = true; + } + } + } + + return bPolyPolygonChanged; +} + +bool PolyPolygonEditor::GetRelativePolyPoint( const basegfx::B2DPolyPolygon& rPoly, sal_uInt32 nAbsPnt, sal_uInt32& rPolyNum, sal_uInt32& rPointNum ) +{ + const sal_uInt32 nPolyCount(rPoly.count()); + sal_uInt32 nPolyNum(0); + + while(nPolyNum < nPolyCount) + { + const sal_uInt32 nPointCount(rPoly.getB2DPolygon(nPolyNum).count()); + + if(nAbsPnt < nPointCount) + { + rPolyNum = nPolyNum; + rPointNum = nAbsPnt; + + return true; + } + else + { + nPolyNum++; + nAbsPnt -= nPointCount; + } + } + + return false; +} + +} // end of namespace sdr + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |