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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 <svx/svdsnpv.hxx>
#include <math.h>
#include <svx/svdetc.hxx>
#include <svx/svdobj.hxx>
#include <svx/svdpagv.hxx>
#include <svx/svdpage.hxx>
#include <svx/svditer.hxx>
#include <svx/sdr/overlay/overlayobjectlist.hxx>
#include <sdr/overlay/overlaycrosshair.hxx>
#include <sdr/overlay/overlayhelpline.hxx>
#include <svx/sdr/overlay/overlaymanager.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <svx/sdrpaintwindow.hxx>
class ImplPageOriginOverlay
{
// The OverlayObjects
sdr::overlay::OverlayObjectList maObjects;
// The current position in logical coodinates
basegfx::B2DPoint maPosition;
public:
ImplPageOriginOverlay(const SdrPaintView& rView, const basegfx::B2DPoint& rStartPos);
// The OverlayObjects are cleared using the destructor of OverlayObjectList.
// That destructor calls clear() at the list which removes all objects from the
// OverlayManager and deletes them.
void SetPosition(const basegfx::B2DPoint& rNewPosition);
};
ImplPageOriginOverlay::ImplPageOriginOverlay(const SdrPaintView& rView, const basegfx::B2DPoint& rStartPos)
: maPosition(rStartPos)
{
for(sal_uInt32 a(0); a < rView.PaintWindowCount(); a++)
{
SdrPaintWindow* pCandidate = rView.GetPaintWindow(a);
rtl::Reference< sdr::overlay::OverlayManager > xTargetOverlay = pCandidate->GetOverlayManager();
if (xTargetOverlay.is())
{
sdr::overlay::OverlayCrosshairStriped* aNew = new sdr::overlay::OverlayCrosshairStriped(
maPosition);
xTargetOverlay->add(*aNew);
maObjects.append(aNew);
}
}
}
void ImplPageOriginOverlay::SetPosition(const basegfx::B2DPoint& rNewPosition)
{
if(rNewPosition != maPosition)
{
// apply to OverlayObjects
for(sal_uInt32 a(0); a < maObjects.count(); a++)
{
sdr::overlay::OverlayCrosshairStriped* pCandidate =
static_cast< sdr::overlay::OverlayCrosshairStriped* >(&maObjects.getOverlayObject(a));
if(pCandidate)
{
pCandidate->setBasePosition(rNewPosition);
}
}
// remember new position
maPosition = rNewPosition;
}
}
class ImplHelpLineOverlay
{
// The OverlayObjects
sdr::overlay::OverlayObjectList maObjects;
// The current position in logical coodinates
basegfx::B2DPoint maPosition;
// HelpLine specific stuff
SdrPageView* mpPageView;
sal_uInt16 mnHelpLineNumber;
SdrHelpLineKind meHelpLineKind;
public:
ImplHelpLineOverlay(const SdrPaintView& rView, const basegfx::B2DPoint& rStartPos,
SdrPageView* pPageView, sal_uInt16 nHelpLineNumber, SdrHelpLineKind eKind);
// The OverlayObjects are cleared using the destructor of OverlayObjectList.
// That destructor calls clear() at the list which removes all objects from the
// OverlayManager and deletes them.
void SetPosition(const basegfx::B2DPoint& rNewPosition);
// access to HelpLine specific stuff
SdrPageView* GetPageView() const { return mpPageView; }
sal_uInt16 GetHelpLineNumber() const { return mnHelpLineNumber; }
SdrHelpLineKind GetHelpLineKind() const { return meHelpLineKind; }
};
ImplHelpLineOverlay::ImplHelpLineOverlay(
const SdrPaintView& rView, const basegfx::B2DPoint& rStartPos,
SdrPageView* pPageView, sal_uInt16 nHelpLineNumber, SdrHelpLineKind eKind)
: maPosition(rStartPos),
mpPageView(pPageView),
mnHelpLineNumber(nHelpLineNumber),
meHelpLineKind(eKind)
{
for(sal_uInt32 a(0); a < rView.PaintWindowCount(); a++)
{
SdrPaintWindow* pCandidate = rView.GetPaintWindow(a);
rtl::Reference< sdr::overlay::OverlayManager > xTargetOverlay = pCandidate->GetOverlayManager();
if (xTargetOverlay.is())
{
sdr::overlay::OverlayHelplineStriped* aNew = new sdr::overlay::OverlayHelplineStriped(
maPosition, meHelpLineKind);
xTargetOverlay->add(*aNew);
maObjects.append(aNew);
}
}
}
void ImplHelpLineOverlay::SetPosition(const basegfx::B2DPoint& rNewPosition)
{
if(rNewPosition != maPosition)
{
// apply to OverlayObjects
for(sal_uInt32 a(0); a < maObjects.count(); a++)
{
sdr::overlay::OverlayHelplineStriped* pCandidate =
static_cast< sdr::overlay::OverlayHelplineStriped* >(&maObjects.getOverlayObject(a));
if(pCandidate)
{
pCandidate->setBasePosition(rNewPosition);
}
}
// remember new position
maPosition = rNewPosition;
}
}
SdrSnapView::SdrSnapView(SdrModel* pModel1, OutputDevice* pOut)
: SdrPaintView(pModel1,pOut)
, mpPageOriginOverlay(nullptr)
, mpHelpLineOverlay(nullptr)
, nMagnSizPix(4)
, nSnapAngle(1500)
, nEliminatePolyPointLimitAngle(0)
, eCrookMode(SdrCrookMode::Rotate)
, bSnapEnab(true)
, bGridSnap(true)
, bBordSnap(true)
, bHlplSnap(true)
, bOFrmSnap(true)
, bOPntSnap(false)
, bOConSnap(true)
, bMoveSnapOnlyTopLeft(false)
, bOrtho(false)
, bBigOrtho(true)
, bAngleSnapEnab(false)
, bMoveOnlyDragging(false)
, bSlantButShear(false)
, bCrookNoContortion(false)
, bEliminatePolyPoints(false)
{
}
SdrSnapView::~SdrSnapView()
{
BrkSetPageOrg();
BrkDragHelpLine();
}
bool SdrSnapView::IsAction() const
{
return IsSetPageOrg() || IsDragHelpLine() || SdrPaintView::IsAction();
}
void SdrSnapView::MovAction(const Point& rPnt)
{
SdrPaintView::MovAction(rPnt);
if (IsSetPageOrg()) {
MovSetPageOrg(rPnt);
}
if (IsDragHelpLine()) {
MovDragHelpLine(rPnt);
}
}
void SdrSnapView::EndAction()
{
if (IsSetPageOrg()) {
EndSetPageOrg();
}
if (IsDragHelpLine()) {
EndDragHelpLine();
}
SdrPaintView::EndAction();
}
void SdrSnapView::BckAction()
{
BrkSetPageOrg();
BrkDragHelpLine();
SdrPaintView::BckAction();
}
void SdrSnapView::BrkAction()
{
BrkSetPageOrg();
BrkDragHelpLine();
SdrPaintView::BrkAction();
}
void SdrSnapView::TakeActionRect(tools::Rectangle& rRect) const
{
if (IsSetPageOrg() || IsDragHelpLine()) {
rRect=tools::Rectangle(maDragStat.GetNow(),maDragStat.GetNow());
} else {
SdrPaintView::TakeActionRect(rRect);
}
}
Point SdrSnapView::GetSnapPos(const Point& rPnt, const SdrPageView* pPV) const
{
Point aPt(rPnt);
SnapPos(aPt,pPV);
return aPt;
}
#define NOT_SNAPPED 0x7FFFFFFF
SdrSnap SdrSnapView::SnapPos(Point& rPnt, const SdrPageView* pPV) const
{
if (!bSnapEnab) return SdrSnap::NOTSNAPPED;
long x=rPnt.X();
long y=rPnt.Y();
if (pPV==nullptr) {
pPV=GetSdrPageView();
if (pPV==nullptr) return SdrSnap::NOTSNAPPED;
}
long dx=NOT_SNAPPED;
long dy=NOT_SNAPPED;
long dx1,dy1;
long mx=aMagnSiz.Width();
long my=aMagnSiz.Height();
if (mbHlplVisible && bHlplSnap && !IsDragHelpLine())
{
const SdrHelpLineList& rHLL=pPV->GetHelpLines();
sal_uInt16 nCount=rHLL.GetCount();
for (sal_uInt16 i=nCount; i>0;) {
i--;
const SdrHelpLine& rHL=rHLL[i];
const Point& rPos=rHL.GetPos();
switch (rHL.GetKind()) {
case SdrHelpLineKind::Vertical: {
long a=x-rPos.X();
if (std::abs(a)<=mx) { dx1=-a; if (std::abs(dx1)<std::abs(dx)) dx=dx1; }
} break;
case SdrHelpLineKind::Horizontal: {
long b=y-rPos.Y();
if (std::abs(b)<=my) { dy1=-b; if (std::abs(dy1)<std::abs(dy)) dy=dy1; }
} break;
case SdrHelpLineKind::Point: {
long a=x-rPos.X();
long b=y-rPos.Y();
if (std::abs(a)<=mx && std::abs(b)<=my) {
dx1=-a; dy1=-b;
if (std::abs(dx1)<std::abs(dx) && std::abs(dy1)<std::abs(dy)) { dx=dx1; dy=dy1; }
}
} break;
} // switch
}
}
if (mbBordVisible && bBordSnap) {
SdrPage* pPage=pPV->GetPage();
long xs=pPage->GetWidth();
long ys=pPage->GetHeight();
long lft=pPage->GetLeftBorder();
long rgt=pPage->GetRightBorder();
long upp=pPage->GetUpperBorder();
long lwr=pPage->GetLowerBorder();
long a;
a=x- lft ; if (std::abs(a)<=mx) { dx1=-a; if (std::abs(dx1)<std::abs(dx)) dx=dx1; } // left margin
a=x-(xs-rgt); if (std::abs(a)<=mx) { dx1=-a; if (std::abs(dx1)<std::abs(dx)) dx=dx1; } // right margin
a=x ; if (std::abs(a)<=mx) { dx1=-a; if (std::abs(dx1)<std::abs(dx)) dx=dx1; } // left edge of paper
a=x- xs ; if (std::abs(a)<=mx) { dx1=-a; if (std::abs(dx1)<std::abs(dx)) dx=dx1; } // right edge of paper
a=y- upp ; if (std::abs(a)<=my) { dy1=-a; if (std::abs(dy1)<std::abs(dy)) dy=dy1; } // left margin
a=y-(ys-lwr); if (std::abs(a)<=my) { dy1=-a; if (std::abs(dy1)<std::abs(dy)) dy=dy1; } // right margin
a=y ; if (std::abs(a)<=my) { dy1=-a; if (std::abs(dy1)<std::abs(dy)) dy=dy1; } // left edge of paper
a=y- ys ; if (std::abs(a)<=my) { dy1=-a; if (std::abs(dy1)<std::abs(dy)) dy=dy1; } // right edge of paper
}
if (bOFrmSnap || bOPntSnap) {
sal_uInt32 nMaxPointSnapCount=200;
sal_uInt32 nMaxFrameSnapCount=200;
// go back to SdrIterMode::DeepNoGroups runthrough for snap to object comparisons
SdrObjListIter aIter(*pPV->GetPage(),SdrIterMode::DeepNoGroups,true);
while (aIter.IsMore() && (nMaxPointSnapCount>0 || nMaxFrameSnapCount>0)) {
SdrObject* pO=aIter.Next();
tools::Rectangle aRect(pO->GetCurrentBoundRect());
aRect.Left ()-=mx;
aRect.Right ()+=mx;
aRect.Top ()-=my;
aRect.Bottom()+=my;
if (aRect.IsInside(rPnt)) {
if (bOPntSnap && nMaxPointSnapCount>0)
{
sal_uInt32 nCount(pO->GetSnapPointCount());
for (sal_uInt32 i(0); i < nCount && nMaxPointSnapCount > 0; i++)
{
Point aP(pO->GetSnapPoint(i));
dx1=x-aP.X();
dy1=y-aP.Y();
if (std::abs(dx1)<=mx && std::abs(dy1)<=my && std::abs(dx1)<std::abs(dx) && std::abs(dy1)<std::abs(dy)) {
dx=-dx1;
dy=-dy1;
}
nMaxPointSnapCount--;
}
}
if (bOFrmSnap && nMaxFrameSnapCount>0) {
tools::Rectangle aLog(pO->GetSnapRect());
tools::Rectangle aR1(aLog);
aR1.Left ()-=mx;
aR1.Right ()+=mx;
aR1.Top ()-=my;
aR1.Bottom()+=my;
if (aR1.IsInside(rPnt)) {
if (std::abs(x-aLog.Left ())<=mx) { dx1=-(x-aLog.Left ()); if (std::abs(dx1)<std::abs(dx)) dx=dx1; }
if (std::abs(x-aLog.Right ())<=mx) { dx1=-(x-aLog.Right ()); if (std::abs(dx1)<std::abs(dx)) dx=dx1; }
if (std::abs(y-aLog.Top ())<=my) { dy1=-(y-aLog.Top ()); if (std::abs(dy1)<std::abs(dy)) dy=dy1; }
if (std::abs(y-aLog.Bottom())<=my) { dy1=-(y-aLog.Bottom()); if (std::abs(dy1)<std::abs(dy)) dy=dy1; }
}
nMaxFrameSnapCount--;
}
}
}
}
if(bGridSnap)
{
double fSnapWidth(aSnapWdtX);
if(dx == NOT_SNAPPED && fSnapWidth != 0.0)
{
double fx = (double)x;
// round instead of trunc
if(fx - (double)pPV->GetPageOrigin().X() >= 0.0)
fx += fSnapWidth / 2.0;
else
fx -= fSnapWidth / 2.0;
x = (long)((fx - (double)pPV->GetPageOrigin().X()) / fSnapWidth);
x = (long)((double)x * fSnapWidth + (double)pPV->GetPageOrigin().X());
dx = 0;
}
fSnapWidth = double(aSnapWdtY);
if(dy == NOT_SNAPPED && fSnapWidth)
{
double fy = (double)y;
// round instead of trunc
if(fy - (double)pPV->GetPageOrigin().Y() >= 0.0)
fy += fSnapWidth / 2.0;
else
fy -= fSnapWidth / 2.0;
y = (long)((fy - (double)pPV->GetPageOrigin().Y()) / fSnapWidth);
y = (long)((double)y * fSnapWidth + (double)pPV->GetPageOrigin().Y());
dy = 0;
}
}
SdrSnap bRet=SdrSnap::NOTSNAPPED;
if (dx==NOT_SNAPPED) dx=0; else bRet|=SdrSnap::XSNAPPED;
if (dy==NOT_SNAPPED) dy=0; else bRet|=SdrSnap::YSNAPPED;
rPnt.X()=x+dx;
rPnt.Y()=y+dy;
return bRet;
}
void SdrSnapView::CheckSnap(const Point& rPt, long& nBestXSnap, long& nBestYSnap, bool& bXSnapped, bool& bYSnapped) const
{
Point aPt(rPt);
SdrSnap nRet=SnapPos(aPt,nullptr);
aPt-=rPt;
if (nRet & SdrSnap::XSNAPPED) {
if (bXSnapped) {
if (std::abs(aPt.X())<std::abs(nBestXSnap)) {
nBestXSnap=aPt.X();
}
} else {
nBestXSnap=aPt.X();
bXSnapped=true;
}
}
if (nRet & SdrSnap::YSNAPPED) {
if (bYSnapped) {
if (std::abs(aPt.Y())<std::abs(nBestYSnap)) {
nBestYSnap=aPt.Y();
}
} else {
nBestYSnap=aPt.Y();
bYSnapped=true;
}
}
}
void SdrSnapView::BegSetPageOrg(const Point& rPnt)
{
BrkAction();
DBG_ASSERT(nullptr == mpPageOriginOverlay, "SdrSnapView::BegSetPageOrg: There exists a ImplPageOriginOverlay (!)");
basegfx::B2DPoint aStartPos(rPnt.X(), rPnt.Y());
mpPageOriginOverlay = new ImplPageOriginOverlay(*this, aStartPos);
maDragStat.Reset(GetSnapPos(rPnt,nullptr));
}
void SdrSnapView::MovSetPageOrg(const Point& rPnt)
{
if(IsSetPageOrg())
{
maDragStat.NextMove(GetSnapPos(rPnt,nullptr));
DBG_ASSERT(mpPageOriginOverlay, "SdrSnapView::MovSetPageOrg: no ImplPageOriginOverlay (!)");
basegfx::B2DPoint aNewPos(maDragStat.GetNow().X(), maDragStat.GetNow().Y());
mpPageOriginOverlay->SetPosition(aNewPos);
}
}
void SdrSnapView::EndSetPageOrg()
{
if(IsSetPageOrg())
{
SdrPageView* pPV = GetSdrPageView();
if(pPV)
{
Point aPnt(maDragStat.GetNow());
pPV->SetPageOrigin(aPnt);
}
// cleanup
BrkSetPageOrg();
}
}
void SdrSnapView::BrkSetPageOrg()
{
if(IsSetPageOrg())
{
DBG_ASSERT(mpPageOriginOverlay, "SdrSnapView::MovSetPageOrg: no ImplPageOriginOverlay (!)");
delete mpPageOriginOverlay;
mpPageOriginOverlay = nullptr;
}
}
bool SdrSnapView::PickHelpLine(const Point& rPnt, short nTol, const OutputDevice& rOut, sal_uInt16& rnHelpLineNum, SdrPageView*& rpPV) const
{
rpPV=nullptr;
nTol=ImpGetHitTolLogic(nTol,&rOut);
SdrPageView* pPV = GetSdrPageView();
if(pPV)
{
Point aPnt(rPnt);
sal_uInt16 nIndex=pPV->GetHelpLines().HitTest(aPnt,sal_uInt16(nTol),rOut);
if (nIndex!=SDRHELPLINE_NOTFOUND) {
rpPV=pPV;
rnHelpLineNum=nIndex;
return true;
}
}
return false;
}
// start HelpLine drag for new HelpLine
bool SdrSnapView::BegDragHelpLine(sal_uInt16 nHelpLineNum, SdrPageView* pPV)
{
bool bRet(false);
BrkAction();
if(pPV && nHelpLineNum < pPV->GetHelpLines().GetCount())
{
const SdrHelpLineList& rHelpLines = pPV->GetHelpLines();
const SdrHelpLine& rHelpLine = rHelpLines[nHelpLineNum];
Point aHelpLinePos = rHelpLine.GetPos();
basegfx::B2DPoint aStartPos(aHelpLinePos.X(), aHelpLinePos.Y());
DBG_ASSERT(nullptr == mpHelpLineOverlay, "SdrSnapView::BegDragHelpLine: There exists a ImplHelpLineOverlay (!)");
mpHelpLineOverlay = new ImplHelpLineOverlay(*this, aStartPos, pPV, nHelpLineNum, rHelpLine.GetKind());
maDragStat.Reset(GetSnapPos(aHelpLinePos, pPV));
maDragStat.SetMinMove(ImpGetMinMovLogic(-3, nullptr));
bRet = true;
}
return bRet;
}
// start HelpLine drag with existing HelpLine
void SdrSnapView::BegDragHelpLine(const Point& rPnt, SdrHelpLineKind eNewKind)
{
BrkAction();
if(GetSdrPageView())
{
DBG_ASSERT(nullptr == mpHelpLineOverlay, "SdrSnapView::BegDragHelpLine: There exists a ImplHelpLineOverlay (!)");
basegfx::B2DPoint aStartPos(rPnt.X(), rPnt.Y());
mpHelpLineOverlay = new ImplHelpLineOverlay(*this, aStartPos, nullptr, 0, eNewKind);
maDragStat.Reset(GetSnapPos(rPnt, nullptr));
}
}
Pointer SdrSnapView::GetDraggedHelpLinePointer() const
{
if(IsDragHelpLine())
{
switch(mpHelpLineOverlay->GetHelpLineKind())
{
case SdrHelpLineKind::Vertical : return Pointer(PointerStyle::ESize);
case SdrHelpLineKind::Horizontal: return Pointer(PointerStyle::SSize);
default : return Pointer(PointerStyle::Move);
}
}
return Pointer(PointerStyle::Move);
}
void SdrSnapView::MovDragHelpLine(const Point& rPnt)
{
if(IsDragHelpLine() && maDragStat.CheckMinMoved(rPnt))
{
Point aPnt(GetSnapPos(rPnt, nullptr));
if(aPnt != maDragStat.GetNow())
{
maDragStat.NextMove(aPnt);
DBG_ASSERT(mpHelpLineOverlay, "SdrSnapView::MovDragHelpLine: no ImplHelpLineOverlay (!)");
basegfx::B2DPoint aNewPos(maDragStat.GetNow().X(), maDragStat.GetNow().Y());
mpHelpLineOverlay->SetPosition(aNewPos);
}
}
}
bool SdrSnapView::EndDragHelpLine()
{
bool bRet(false);
if(IsDragHelpLine())
{
if(maDragStat.IsMinMoved())
{
SdrPageView* pPageView = mpHelpLineOverlay->GetPageView();
if(pPageView)
{
// moved existing one
Point aPnt(maDragStat.GetNow());
const SdrHelpLineList& rHelpLines = pPageView->GetHelpLines();
SdrHelpLine aChangedHelpLine = rHelpLines[mpHelpLineOverlay->GetHelpLineNumber()];
aChangedHelpLine.SetPos(aPnt);
pPageView->SetHelpLine(mpHelpLineOverlay->GetHelpLineNumber(), aChangedHelpLine);
bRet = true;
}
else
{
// create new one
pPageView = GetSdrPageView();
if(pPageView)
{
Point aPnt(maDragStat.GetNow());
SdrHelpLine aNewHelpLine(mpHelpLineOverlay->GetHelpLineKind(), aPnt);
pPageView->InsertHelpLine(aNewHelpLine);
bRet = true;
}
}
}
// cleanup
BrkDragHelpLine();
}
return bRet;
}
void SdrSnapView::BrkDragHelpLine()
{
if(IsDragHelpLine())
{
DBG_ASSERT(mpHelpLineOverlay, "SdrSnapView::EndDragHelpLine: no ImplHelpLineOverlay (!)");
delete mpHelpLineOverlay;
mpHelpLineOverlay = nullptr;
}
}
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