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libreoffice/sd/source/ui/func/fumorph.cxx
Daniel Baumann 8e63e14cf6
Adding upstream version 4:25.2.3.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-22 16:20:04 +02:00

506 lines
18 KiB
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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 <fumorph.hxx>
#include <svx/xfillit0.hxx>
#include <svx/xlineit0.hxx>
#include <svx/xlnclit.hxx>
#include <svx/xlnwtit.hxx>
#include <svx/xflclit.hxx>
#include <svx/svdopath.hxx>
#include <svx/svdogrp.hxx>
#include <editeng/eeitem.hxx>
#include <View.hxx>
#include <Window.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/polygon/b2dpolypolygontools.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <strings.hrc>
#include <sdresid.hxx>
#include <sdabstdlg.hxx>
#include <svx/svditer.hxx>
#include <basegfx/color/bcolor.hxx>
#include <com/sun/star/drawing/LineStyle.hpp>
using namespace com::sun::star;
namespace sd {
FuMorph::FuMorph (
ViewShell* pViewSh,
::sd::Window* pWin,
::sd::View* pView,
SdDrawDocument* pDoc,
SfxRequest& rReq )
: FuPoor(pViewSh, pWin, pView, pDoc, rReq)
{
}
rtl::Reference<FuPoor> FuMorph::Create(
ViewShell* pViewSh,
::sd::Window* pWin,
::sd::View* pView,
SdDrawDocument* pDoc,
SfxRequest& rReq
)
{
rtl::Reference<FuPoor> xFunc( new FuMorph( pViewSh, pWin, pView, pDoc, rReq ) );
xFunc->DoExecute(rReq);
return xFunc;
}
void FuMorph::DoExecute( SfxRequest& )
{
const SdrMarkList& rMarkList = mpView->GetMarkedObjectList();
if(rMarkList.GetMarkCount() != 2)
return;
// create clones
SdrObject* pObj1 = rMarkList.GetMark(0)->GetMarkedSdrObj();
SdrObject* pObj2 = rMarkList.GetMark(1)->GetMarkedSdrObj();
rtl::Reference<SdrObject> pCloneObj1(pObj1->CloneSdrObject(pObj1->getSdrModelFromSdrObject()));
rtl::Reference<SdrObject> pCloneObj2(pObj2->CloneSdrObject(pObj2->getSdrModelFromSdrObject()));
// delete text at clone, otherwise we do not get a correct PathObj
pCloneObj1->SetOutlinerParaObject(std::nullopt);
pCloneObj2->SetOutlinerParaObject(std::nullopt);
// create path objects
rtl::Reference<SdrObject> pPolyObj1 = pCloneObj1->ConvertToPolyObj(false, false);
rtl::Reference<SdrObject> pPolyObj2 = pCloneObj2->ConvertToPolyObj(false, false);
SdAbstractDialogFactory* pFact = SdAbstractDialogFactory::Create();
ScopedVclPtr<AbstractMorphDlg> pDlg( pFact->CreateMorphDlg(mpWindow ? mpWindow->GetFrameWeld() : nullptr, pObj1, pObj2) );
if(pPolyObj1 && pPolyObj2 && (pDlg->Execute() == RET_OK))
{
B2DPolyPolygonList_impl aPolyPolyList;
::basegfx::B2DPolyPolygon aPolyPoly1;
::basegfx::B2DPolyPolygon aPolyPoly2;
pDlg->SaveSettings();
// #i48168# Not always is the pPolyObj1/pPolyObj2 a SdrPathObj, it may also be a group object
// containing SdrPathObjs. To get the polygons, I add two iters here
SdrObjListIter aIter1(*pPolyObj1);
SdrObjListIter aIter2(*pPolyObj2);
while(aIter1.IsMore())
{
SdrObject* pObj = aIter1.Next();
if(auto pPathObj = dynamic_cast< SdrPathObj *>( pObj ))
aPolyPoly1.append(pPathObj->GetPathPoly());
}
while(aIter2.IsMore())
{
SdrObject* pObj = aIter2.Next();
if(auto pPathObj = dynamic_cast< SdrPathObj *>( pObj ))
aPolyPoly2.append(pPathObj->GetPathPoly());
}
// perform morphing
if(aPolyPoly1.count() && aPolyPoly2.count())
{
aPolyPoly1 = ::basegfx::utils::correctOrientations(aPolyPoly1);
aPolyPoly1.removeDoublePoints();
::basegfx::B2VectorOrientation eIsClockwise1(::basegfx::utils::getOrientation(aPolyPoly1.getB2DPolygon(0)));
aPolyPoly2 = ::basegfx::utils::correctOrientations(aPolyPoly2);
aPolyPoly2.removeDoublePoints();
::basegfx::B2VectorOrientation eIsClockwise2(::basegfx::utils::getOrientation(aPolyPoly2.getB2DPolygon(0)));
// set same orientation
if(eIsClockwise1 != eIsClockwise2)
aPolyPoly2.flip();
// force same poly count
if(aPolyPoly1.count() < aPolyPoly2.count())
ImpAddPolys(aPolyPoly1, aPolyPoly2);
else if(aPolyPoly2.count() < aPolyPoly1.count())
ImpAddPolys(aPolyPoly2, aPolyPoly1);
// use orientation flag from dialog
if(!pDlg->IsOrientationFade())
aPolyPoly2.flip();
// force same point counts
for( sal_uInt32 a(0); a < aPolyPoly1.count(); a++ )
{
::basegfx::B2DPolygon aSub1(aPolyPoly1.getB2DPolygon(a));
::basegfx::B2DPolygon aSub2(aPolyPoly2.getB2DPolygon(a));
if(aSub1.count() < aSub2.count())
ImpEqualizePolyPointCount(aSub1, aSub2);
else if(aSub2.count() < aSub1.count())
ImpEqualizePolyPointCount(aSub2, aSub1);
aPolyPoly1.setB2DPolygon(a, aSub1);
aPolyPoly2.setB2DPolygon(a, aSub2);
}
ImpMorphPolygons(aPolyPoly1, aPolyPoly2, pDlg->GetFadeSteps(), aPolyPolyList);
OUString aString = rMarkList.GetMarkDescription() +
" " + SdResId(STR_UNDO_MORPHING);
mpView->BegUndo(aString);
ImpInsertPolygons(aPolyPolyList, pDlg->IsAttributeFade(), pObj1, pObj2);
mpView->EndUndo();
}
}
}
static ::basegfx::B2DPolygon ImpGetExpandedPolygon(
const ::basegfx::B2DPolygon& rCandidate,
sal_uInt32 nNum
)
{
if(rCandidate.count() && nNum && rCandidate.count() != nNum)
{
// length of step in dest poly
::basegfx::B2DPolygon aRetval;
const double fStep(::basegfx::utils::getLength(rCandidate) / static_cast<double>(rCandidate.isClosed() ? nNum : nNum - 1));
double fDestPos(0.0);
double fSrcPos(0.0);
sal_uInt32 nSrcPos(0);
sal_uInt32 nSrcPosNext((nSrcPos + 1 == rCandidate.count()) ? 0 : nSrcPos + 1);
double fNextSrcLen(::basegfx::B2DVector(rCandidate.getB2DPoint(nSrcPos) - rCandidate.getB2DPoint(nSrcPosNext)).getLength());
for(sal_uInt32 b(0); b < nNum; b++)
{
// calc fDestPos in source
while(fSrcPos + fNextSrcLen < fDestPos)
{
fSrcPos += fNextSrcLen;
nSrcPos++;
nSrcPosNext = (nSrcPos + 1 == rCandidate.count()) ? 0 : nSrcPos + 1;
fNextSrcLen = ::basegfx::B2DVector(rCandidate.getB2DPoint(nSrcPos) - rCandidate.getB2DPoint(nSrcPosNext)).getLength();
}
// fDestPos is between fSrcPos and (fSrcPos + fNextSrcLen)
const double fLenA((fDestPos - fSrcPos) / fNextSrcLen);
const ::basegfx::B2DPoint aOld1(rCandidate.getB2DPoint(nSrcPos));
const ::basegfx::B2DPoint aOld2(rCandidate.getB2DPoint(nSrcPosNext));
::basegfx::B2DPoint aNewPoint(basegfx::interpolate(aOld1, aOld2, fLenA));
aRetval.append(aNewPoint);
// next step
fDestPos += fStep;
}
if(aRetval.count() >= 3)
{
aRetval.setClosed(rCandidate.isClosed());
}
return aRetval;
}
else
{
return rCandidate;
}
}
/**
* make the point count of the polygons equal in adding points
*/
void FuMorph::ImpEqualizePolyPointCount(
::basegfx::B2DPolygon& rSmall,
const ::basegfx::B2DPolygon& rBig
)
{
// create poly with equal point count
const sal_uInt32 nCnt(rBig.count());
::basegfx::B2DPolygon aPoly1(ImpGetExpandedPolygon(rSmall, nCnt));
// create transformation for rBig to do the compare
const ::basegfx::B2DRange aSrcSize(::basegfx::utils::getRange(rBig));
const ::basegfx::B2DPoint aSrcPos(aSrcSize.getCenter());
const ::basegfx::B2DRange aDstSize(::basegfx::utils::getRange(rSmall));
const ::basegfx::B2DPoint aDstPos(aDstSize.getCenter());
basegfx::B2DHomMatrix aTrans(basegfx::utils::createTranslateB2DHomMatrix(-aSrcPos.getX(), -aSrcPos.getY()));
aTrans.scale(aDstSize.getWidth() / aSrcSize.getWidth(), aDstSize.getHeight() / aSrcSize.getHeight());
aTrans.translate(aDstPos.getX(), aDstPos.getY());
// transpose points to have smooth linear blending
::basegfx::B2DPolygon aPoly2;
aPoly2.append(::basegfx::B2DPoint(), nCnt);
sal_uInt32 nInd(ImpGetNearestIndex(aPoly1, aTrans * rBig.getB2DPoint(0)));
for(sal_uInt32 a(0); a < nCnt; a++)
{
aPoly2.setB2DPoint((a + nCnt - nInd) % nCnt, aPoly1.getB2DPoint(a));
}
aPoly2.setClosed(rBig.isClosed());
rSmall = std::move(aPoly2);
}
sal_uInt32 FuMorph::ImpGetNearestIndex(
const ::basegfx::B2DPolygon& rPoly,
const ::basegfx::B2DPoint& rPos
)
{
double fMinDist = 0.0;
sal_uInt32 nActInd = 0;
for(sal_uInt32 a(0); a < rPoly.count(); a++)
{
double fNewDist(::basegfx::B2DVector(rPoly.getB2DPoint(a) - rPos).getLength());
if(!a || fNewDist < fMinDist)
{
fMinDist = fNewDist;
nActInd = a;
}
}
return nActInd;
}
/**
* add to a point reduced polys until count is same
*/
void FuMorph::ImpAddPolys(
::basegfx::B2DPolyPolygon& rSmaller,
const ::basegfx::B2DPolyPolygon& rBigger
)
{
while(rSmaller.count() < rBigger.count())
{
const ::basegfx::B2DPolygon& aToBeCopied(rBigger.getB2DPolygon(rSmaller.count()));
const ::basegfx::B2DRange aToBeCopiedPolySize(::basegfx::utils::getRange(aToBeCopied));
::basegfx::B2DPoint aNewPoint(aToBeCopiedPolySize.getCenter());
::basegfx::B2DPolygon aNewPoly;
const ::basegfx::B2DRange aSrcSize(::basegfx::utils::getRange(rBigger.getB2DPolygon(0)));
const ::basegfx::B2DPoint aSrcPos(aSrcSize.getCenter());
const ::basegfx::B2DRange aDstSize(::basegfx::utils::getRange(rSmaller.getB2DPolygon(0)));
const ::basegfx::B2DPoint aDstPos(aDstSize.getCenter());
aNewPoint = aNewPoint - aSrcPos + aDstPos;
for(sal_uInt32 a(0); a < aToBeCopied.count(); a++)
{
aNewPoly.append(aNewPoint);
}
rSmaller.append(aNewPoly);
}
}
/**
* create group object with morphed polygons
*/
void FuMorph::ImpInsertPolygons(
B2DPolyPolygonList_impl& rPolyPolyList3D,
bool bAttributeFade,
const SdrObject* pObj1,
const SdrObject* pObj2
)
{
Color aStartFillCol;
Color aEndFillCol;
Color aStartLineCol;
Color aEndLineCol;
::tools::Long nStartLineWidth = 0;
::tools::Long nEndLineWidth = 0;
SdrPageView* pPageView = mpView->GetSdrPageView();
SfxItemPool & rPool = pObj1->GetObjectItemPool();
SfxItemSetFixed<SDRATTR_START,SDRATTR_NOTPERSIST_FIRST-1,EE_ITEMS_START,EE_ITEMS_END> aSet1( rPool );
SfxItemSet aSet2( aSet1 );
bool bLineColor = false;
bool bFillColor = false;
bool bLineWidth = false;
bool bIgnoreLine = false;
bool bIgnoreFill = false;
aSet1.Put(pObj1->GetMergedItemSet());
aSet2.Put(pObj2->GetMergedItemSet());
const drawing::LineStyle eLineStyle1 = aSet1.Get(XATTR_LINESTYLE).GetValue();
const drawing::LineStyle eLineStyle2 = aSet2.Get(XATTR_LINESTYLE).GetValue();
const drawing::FillStyle eFillStyle1 = aSet1.Get(XATTR_FILLSTYLE).GetValue();
const drawing::FillStyle eFillStyle2 = aSet2.Get(XATTR_FILLSTYLE).GetValue();
if ( bAttributeFade )
{
if ( ( eLineStyle1 != drawing::LineStyle_NONE ) && ( eLineStyle2 != drawing::LineStyle_NONE ) )
{
bLineWidth = bLineColor = true;
aStartLineCol = aSet1.Get(XATTR_LINECOLOR).GetColorValue();
aEndLineCol = aSet2.Get(XATTR_LINECOLOR).GetColorValue();
nStartLineWidth = aSet1.Get(XATTR_LINEWIDTH).GetValue();
nEndLineWidth = aSet2.Get(XATTR_LINEWIDTH).GetValue();
}
else if ( ( eLineStyle1 == drawing::LineStyle_NONE ) && ( eLineStyle2 == drawing::LineStyle_NONE ) )
bIgnoreLine = true;
if ( ( eFillStyle1 == drawing::FillStyle_SOLID ) && ( eFillStyle2 == drawing::FillStyle_SOLID ) )
{
bFillColor = true;
aStartFillCol = aSet1.Get(XATTR_FILLCOLOR).GetColorValue();
aEndFillCol = aSet2.Get(XATTR_FILLCOLOR).GetColorValue();
}
else if ( ( eFillStyle1 == drawing::FillStyle_NONE ) && ( eFillStyle2 == drawing::FillStyle_NONE ) )
bIgnoreFill = true;
}
if ( !pPageView )
return;
SfxItemSet aSet( std::move(aSet1) );
rtl::Reference<SdrObjGroup> xObjGroup(new SdrObjGroup(mpView->getSdrModelFromSdrView()));
SdrObjList* pObjList = xObjGroup->GetSubList();
const size_t nCount = rPolyPolyList3D.size();
const double fStep = 1. / ( nCount + 1 );
const double fDelta = nEndLineWidth - nStartLineWidth;
double fFactor = fStep;
aSet.Put( XLineStyleItem( drawing::LineStyle_SOLID ) );
aSet.Put( XFillStyleItem( drawing::FillStyle_SOLID ) );
for ( size_t i = 0; i < nCount; i++, fFactor += fStep )
{
const ::basegfx::B2DPolyPolygon& rPolyPoly3D = rPolyPolyList3D[ i ];
rtl::Reference<SdrPathObj> pNewObj = new SdrPathObj(
mpView->getSdrModelFromSdrView(),
SdrObjKind::Polygon,
rPolyPoly3D);
// line color
if ( bLineColor )
{
const basegfx::BColor aLineColor(basegfx::interpolate(aStartLineCol.getBColor(), aEndLineCol.getBColor(), fFactor));
aSet.Put( XLineColorItem( u""_ustr, Color(aLineColor)));
}
else if ( bIgnoreLine )
aSet.Put( XLineStyleItem( drawing::LineStyle_NONE ) );
// fill color
if ( bFillColor )
{
const basegfx::BColor aFillColor(basegfx::interpolate(aStartFillCol.getBColor(), aEndFillCol.getBColor(), fFactor));
aSet.Put( XFillColorItem( u""_ustr, Color(aFillColor)));
}
else if ( bIgnoreFill )
aSet.Put( XFillStyleItem( drawing::FillStyle_NONE ) );
// line width
if ( bLineWidth )
aSet.Put( XLineWidthItem( nStartLineWidth + static_cast<::tools::Long>( fFactor * fDelta + 0.5 ) ) );
pNewObj->SetMergedItemSetAndBroadcast(aSet);
pObjList->InsertObject( pNewObj.get() );
}
if ( nCount )
{
pObjList->InsertObject(
pObj1->CloneSdrObject(pObj1->getSdrModelFromSdrObject()).get(),
0 );
pObjList->InsertObject(
pObj2->CloneSdrObject(pObj2->getSdrModelFromSdrObject()).get() );
mpView->DeleteMarked();
mpView->InsertObjectAtView(xObjGroup.get(), *pPageView, SdrInsertFlags:: SETDEFLAYER);
}
}
/**
* create single morphed PolyPolygon
*/
::basegfx::B2DPolyPolygon FuMorph::ImpCreateMorphedPolygon(
const ::basegfx::B2DPolyPolygon& rPolyPolyStart,
const ::basegfx::B2DPolyPolygon& rPolyPolyEnd,
double fMorphingFactor
)
{
::basegfx::B2DPolyPolygon aNewPolyPolygon;
const double fFactor = 1.0 - fMorphingFactor;
for(sal_uInt32 a(0); a < rPolyPolyStart.count(); a++)
{
const ::basegfx::B2DPolygon& aPolyStart(rPolyPolyStart.getB2DPolygon(a));
const ::basegfx::B2DPolygon& aPolyEnd(rPolyPolyEnd.getB2DPolygon(a));
const sal_uInt32 nCount(aPolyStart.count());
::basegfx::B2DPolygon aNewPolygon;
for(sal_uInt32 b(0); b < nCount; b++)
{
const ::basegfx::B2DPoint& aPtStart(aPolyStart.getB2DPoint(b));
const ::basegfx::B2DPoint& aPtEnd(aPolyEnd.getB2DPoint(b));
aNewPolygon.append(aPtEnd + ((aPtStart - aPtEnd) * fFactor));
}
aNewPolygon.setClosed(aPolyStart.isClosed() && aPolyEnd.isClosed());
aNewPolyPolygon.append(aNewPolygon);
}
return aNewPolyPolygon;
}
/**
* create morphed PolyPolygons
*/
void FuMorph::ImpMorphPolygons(
const ::basegfx::B2DPolyPolygon& rPolyPoly1,
const ::basegfx::B2DPolyPolygon& rPolyPoly2,
const sal_uInt16 nSteps,
B2DPolyPolygonList_impl& rPolyPolyList3D
)
{
if(!nSteps)
return;
const ::basegfx::B2DRange aStartPolySize(::basegfx::utils::getRange(rPolyPoly1));
const ::basegfx::B2DPoint aStartCenter(aStartPolySize.getCenter());
const ::basegfx::B2DRange aEndPolySize(::basegfx::utils::getRange(rPolyPoly2));
const ::basegfx::B2DPoint aEndCenter(aEndPolySize.getCenter());
const ::basegfx::B2DPoint aDelta(aEndCenter - aStartCenter);
const double fFactor(1.0 / (nSteps + 1));
double fValue(0.0);
for(sal_uInt16 i(0); i < nSteps; i++)
{
fValue += fFactor;
::basegfx::B2DPolyPolygon aNewPolyPoly2D = ImpCreateMorphedPolygon(rPolyPoly1, rPolyPoly2, fValue);
const ::basegfx::B2DRange aNewPolySize(::basegfx::utils::getRange(aNewPolyPoly2D));
const ::basegfx::B2DPoint aNewS(aNewPolySize.getCenter());
const ::basegfx::B2DPoint aRealS(aStartCenter + (aDelta * fValue));
const ::basegfx::B2DPoint aDiff(aRealS - aNewS);
aNewPolyPoly2D.transform(basegfx::utils::createTranslateB2DHomMatrix(aDiff));
rPolyPolyList3D.push_back( std::move(aNewPolyPoly2D) );
}
}
} // end of namespace sd
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */