/**************************************************************
 * 
 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svx.hxx"

#include <svx/svdotext.hxx>
#include <svx/svdhdl.hxx>
#include <svx/svddrag.hxx>
#include <svx/svdview.hxx>
#include <svx/svdorect.hxx> // fuer SetXPolyDirty in MovCreate bei SolidDragging
#include "svx/svdglob.hxx"  // Stringcache
#include "svx/svdstr.hrc"   // Objektname
#include <svx/svdoashp.hxx>
#include <tools/bigint.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/range/b2drange.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>

////////////////////////////////////////////////////////////////////////////////////////////////////
//
//  @@@@@@ @@@@@ @@   @@ @@@@@@  @@@@  @@@@@  @@@@@@
//    @@   @@    @@@ @@@   @@   @@  @@ @@  @@     @@
//    @@   @@     @@@@@    @@   @@  @@ @@  @@     @@
//    @@   @@@@    @@@     @@   @@  @@ @@@@@      @@
//    @@   @@     @@@@@    @@   @@  @@ @@  @@     @@
//    @@   @@    @@@ @@@   @@   @@  @@ @@  @@ @@  @@
//    @@   @@@@@ @@   @@   @@    @@@@  @@@@@   @@@@
//
//  Dragging, Handles, Create
//
////////////////////////////////////////////////////////////////////////////////////////////////////

sal_uInt32 SdrTextObj::GetHdlCount() const
{
	return 8L;
}

SdrHdl* SdrTextObj::GetHdl(sal_uInt32 nHdlNum) const
{
	SdrHdl* pH=NULL;
	Point aPnt;
	SdrHdlKind eKind=HDL_MOVE;
	switch (nHdlNum) {
		case 0: aPnt=aRect.TopLeft();      eKind=HDL_UPLFT; break; // Oben links
		case 1: aPnt=aRect.TopCenter();    eKind=HDL_UPPER; break; // Oben
		case 2: aPnt=aRect.TopRight();     eKind=HDL_UPRGT; break; // Oben rechts
		case 3: aPnt=aRect.LeftCenter();   eKind=HDL_LEFT ; break; // Links
		case 4: aPnt=aRect.RightCenter();  eKind=HDL_RIGHT; break; // Rechts
		case 5: aPnt=aRect.BottomLeft();   eKind=HDL_LWLFT; break; // Unten links
		case 6: aPnt=aRect.BottomCenter(); eKind=HDL_LOWER; break; // Unten
		case 7: aPnt=aRect.BottomRight();  eKind=HDL_LWRGT; break; // Unten rechts
	}
	if (aGeo.nShearWink!=0) ShearPoint(aPnt,aRect.TopLeft(),aGeo.nTan);
	if (aGeo.nDrehWink!=0) RotatePoint(aPnt,aRect.TopLeft(),aGeo.nSin,aGeo.nCos);
	if (eKind!=HDL_MOVE) {
		pH=new SdrHdl(aPnt,eKind);
		pH->SetObj((SdrObject*)this);
		pH->SetDrehWink(aGeo.nDrehWink);
	}
	return pH;
}

////////////////////////////////////////////////////////////////////////////////////////////////////

bool SdrTextObj::hasSpecialDrag() const
{
	return true;
}

Rectangle SdrTextObj::ImpDragCalcRect(const SdrDragStat& rDrag) const
{
	Rectangle aTmpRect(aRect);
	const SdrHdl* pHdl=rDrag.GetHdl();
	SdrHdlKind eHdl=pHdl==NULL ? HDL_MOVE : pHdl->GetKind();
	FASTBOOL bEcke=(eHdl==HDL_UPLFT || eHdl==HDL_UPRGT || eHdl==HDL_LWLFT || eHdl==HDL_LWRGT);
	FASTBOOL bOrtho=rDrag.GetView()!=NULL && rDrag.GetView()->IsOrtho();
	FASTBOOL bBigOrtho=bEcke && bOrtho && rDrag.GetView()->IsBigOrtho();
	Point aPos(rDrag.GetNow());
	// Unrotate:
	if (aGeo.nDrehWink!=0) RotatePoint(aPos,aTmpRect.TopLeft(),-aGeo.nSin,aGeo.nCos);
	// Unshear:
	if (aGeo.nShearWink!=0) ShearPoint(aPos,aTmpRect.TopLeft(),-aGeo.nTan);
	//
	FASTBOOL bLft=(eHdl==HDL_UPLFT || eHdl==HDL_LEFT  || eHdl==HDL_LWLFT);
	FASTBOOL bRgt=(eHdl==HDL_UPRGT || eHdl==HDL_RIGHT || eHdl==HDL_LWRGT);
	FASTBOOL bTop=(eHdl==HDL_UPRGT || eHdl==HDL_UPPER || eHdl==HDL_UPLFT);
	FASTBOOL bBtm=(eHdl==HDL_LWRGT || eHdl==HDL_LOWER || eHdl==HDL_LWLFT);
	if (bLft) aTmpRect.Left()  =aPos.X();
	if (bRgt) aTmpRect.Right() =aPos.X();
	if (bTop) aTmpRect.Top()   =aPos.Y();
	if (bBtm) aTmpRect.Bottom()=aPos.Y();
	if (bOrtho) { // Ortho
		long nWdt0=aRect.Right() -aRect.Left();
		long nHgt0=aRect.Bottom()-aRect.Top();
		long nXMul=aTmpRect.Right() -aTmpRect.Left();
		long nYMul=aTmpRect.Bottom()-aTmpRect.Top();
		long nXDiv=nWdt0;
		long nYDiv=nHgt0;
		FASTBOOL bXNeg=(nXMul<0)!=(nXDiv<0);
		FASTBOOL bYNeg=(nYMul<0)!=(nYDiv<0);
		nXMul=Abs(nXMul);
		nYMul=Abs(nYMul);
		nXDiv=Abs(nXDiv);
		nYDiv=Abs(nYDiv);
		Fraction aXFact(nXMul,nXDiv); // Fractions zum kuerzen
		Fraction aYFact(nYMul,nYDiv); // und zum vergleichen
		nXMul=aXFact.GetNumerator();
		nYMul=aYFact.GetNumerator();
		nXDiv=aXFact.GetDenominator();
		nYDiv=aYFact.GetDenominator();
		if (bEcke) { // Eckpunkthandles
			FASTBOOL bUseX=(aXFact<aYFact) != bBigOrtho;
			if (bUseX) {
				long nNeed=long(BigInt(nHgt0)*BigInt(nXMul)/BigInt(nXDiv));
				if (bYNeg) nNeed=-nNeed;
				if (bTop) aTmpRect.Top()=aTmpRect.Bottom()-nNeed;
				if (bBtm) aTmpRect.Bottom()=aTmpRect.Top()+nNeed;
			} else {
				long nNeed=long(BigInt(nWdt0)*BigInt(nYMul)/BigInt(nYDiv));
				if (bXNeg) nNeed=-nNeed;
				if (bLft) aTmpRect.Left()=aTmpRect.Right()-nNeed;
				if (bRgt) aTmpRect.Right()=aTmpRect.Left()+nNeed;
			}
		} else { // Scheitelpunkthandles
			if ((bLft || bRgt) && nXDiv!=0) {
				long nHgt0b=aRect.Bottom()-aRect.Top();
				long nNeed=long(BigInt(nHgt0b)*BigInt(nXMul)/BigInt(nXDiv));
				aTmpRect.Top()-=(nNeed-nHgt0b)/2;
				aTmpRect.Bottom()=aTmpRect.Top()+nNeed;
			}
			if ((bTop || bBtm) && nYDiv!=0) {
				long nWdt0b=aRect.Right()-aRect.Left();
				long nNeed=long(BigInt(nWdt0b)*BigInt(nYMul)/BigInt(nYDiv));
				aTmpRect.Left()-=(nNeed-nWdt0b)/2;
				aTmpRect.Right()=aTmpRect.Left()+nNeed;
			}
		}
	}
	if (!ISA(SdrObjCustomShape))		// not justifying for CustomShapes to be able to detect if a shape has to be mirrored
		ImpJustifyRect(aTmpRect);
	return aTmpRect;
}

////////////////////////////////////////////////////////////////////////////////////////////////////
// drag

bool SdrTextObj::applySpecialDrag(SdrDragStat& rDrag)
{
	Rectangle aNewRect(ImpDragCalcRect(rDrag));

    if(aNewRect.TopLeft() != aRect.TopLeft() && (aGeo.nDrehWink || aGeo.nShearWink))
	{
		Point aNewPos(aNewRect.TopLeft());
		
        if(aGeo.nShearWink) 
            ShearPoint(aNewPos,aRect.TopLeft(),aGeo.nTan);

		if(aGeo.nDrehWink) 
            RotatePoint(aNewPos,aRect.TopLeft(),aGeo.nSin,aGeo.nCos);

        aNewRect.SetPos(aNewPos);
	}

    if(aNewRect != aRect) 
    {
  		NbcSetLogicRect(aNewRect);
	}
	
	return true;
}

String SdrTextObj::getSpecialDragComment(const SdrDragStat& /*rDrag*/) const
{
	XubString aStr;
	ImpTakeDescriptionStr(STR_DragRectResize,aStr);
	return aStr;
}

////////////////////////////////////////////////////////////////////////////////////////////////////
// Create

FASTBOOL SdrTextObj::BegCreate(SdrDragStat& rStat)
{
	rStat.SetOrtho4Possible();
	Rectangle aRect1(rStat.GetStart(), rStat.GetNow());
	aRect1.Justify();
	rStat.SetActionRect(aRect1);
	aRect = aRect1;
	return sal_True;
}

FASTBOOL SdrTextObj::MovCreate(SdrDragStat& rStat)
{
	Rectangle aRect1;
	rStat.TakeCreateRect(aRect1);
	ImpJustifyRect(aRect1);
	rStat.SetActionRect(aRect1);
	aRect=aRect1; // fuer ObjName
	SetBoundRectDirty();
	bSnapRectDirty=sal_True;
	if (HAS_BASE(SdrRectObj,this)) {
		((SdrRectObj*)this)->SetXPolyDirty();
	}
	return sal_True;
}

FASTBOOL SdrTextObj::EndCreate(SdrDragStat& rStat, SdrCreateCmd eCmd)
{
    rStat.TakeCreateRect(aRect);
    ImpJustifyRect(aRect);

    // #115391#
    AdaptTextMinSize();

	SetRectsDirty();
	if (HAS_BASE(SdrRectObj,this)) {
		((SdrRectObj*)this)->SetXPolyDirty();
	}
	return (eCmd==SDRCREATE_FORCEEND || rStat.GetPointAnz()>=2);
}

void SdrTextObj::BrkCreate(SdrDragStat& /*rStat*/)
{
}

FASTBOOL SdrTextObj::BckCreate(SdrDragStat& /*rStat*/)
{
	return sal_True;
}

basegfx::B2DPolyPolygon SdrTextObj::TakeCreatePoly(const SdrDragStat& rDrag) const
{
	Rectangle aRect1;
	rDrag.TakeCreateRect(aRect1);
	aRect1.Justify();

	basegfx::B2DPolyPolygon aRetval;
	const basegfx::B2DRange aRange(aRect1.Left(), aRect1.Top(), aRect1.Right(), aRect1.Bottom());
	aRetval.append(basegfx::tools::createPolygonFromRect(aRange));
	return aRetval;
}

Pointer SdrTextObj::GetCreatePointer() const
{
	if (IsTextFrame()) return Pointer(POINTER_DRAW_TEXT);
	return Pointer(POINTER_CROSS);
}