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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 "ConnectionLine.hxx"
#include "ConnectionLineData.hxx"
#include "TableWindow.hxx"
#include "TableWindowListBox.hxx"
#include "TableConnection.hxx"
#include <vcl/svapp.hxx>
#include <math.h>
#include <osl/diagnose.h>
#include <vcl/lineinfo.hxx>
using namespace dbaui;
const long DESCRIPT_LINE_WIDTH = 15;
const long HIT_SENSITIVE_RADIUS = 5;
namespace
{
/** calcRect creates a new rectangle with the given points
@param _rBase the base point
@param _aVector the vector which will be added
*/
inline Rectangle calcRect(const Point& _rBase,const Point& _aVector)
{
return Rectangle( _rBase - _aVector, _rBase + _aVector );
}
/** GetTextPos calculate the rectangle for the connection to be drawn
@param _pWin the table window where to draw it
@param _aConnPos the connection point
@param _aDescrLinePos the description line pos
*/
Rectangle GetTextPos(const OTableWindow* _pWin, const Point& _aConnPos,const Point& _aDescrLinePos)
{
OTableWindowListBox* pListBox = _pWin ? _pWin->GetListBox() : NULL;
OSL_ENSURE(_pWin && pListBox, "OConnectionLine::GetSourceTextPos : invalid call !");
Rectangle aReturn;
if ( pListBox )
{
const long nRowHeight = pListBox->GetEntryHeight();
aReturn.Top() = _aConnPos.Y() - nRowHeight;
aReturn.Bottom() = aReturn.Top() + nRowHeight;
if (_aDescrLinePos.X() < _aConnPos.X())
{
aReturn.Left() = _aDescrLinePos.X();
aReturn.Right() = aReturn.Left() + _aConnPos.X() - _aDescrLinePos.X();
}
else
{
aReturn.Left() = _aConnPos.X();
aReturn.Right() = aReturn.Left() + _aDescrLinePos.X() - _aConnPos.X();
}
}
return aReturn;
}
/** calcPointsYValue calculate the points Y value in relation to the listbox entry
@param _pWin the corresponding window
@param _pEntry the source or dest entry
@param _rNewConPos (in/out) the connection pos
@param _rNewDescrPos (in/out) the description pos
*/
void calcPointsYValue(const OTableWindow* _pWin,SvTreeListEntry* _pEntry,Point& _rNewConPos,Point& _rNewDescrPos)
{
const OTableWindowListBox* pListBox = _pWin->GetListBox();
_rNewConPos.Y() = _pWin->GetPosPixel().Y();
if ( _pEntry )
{
const long nRowHeight = pListBox->GetEntryHeight();
_rNewConPos.Y() += pListBox->GetPosPixel().Y();
long nEntryPos = pListBox->GetEntryPosition( _pEntry ).Y();
if( nEntryPos >= 0 )
{
_rNewConPos.Y() += nEntryPos;
_rNewConPos.Y() += (long)( 0.5 * nRowHeight );
}
else
_rNewConPos.Y() -= (long)( 0.5 * nRowHeight );
long nListBoxBottom = _pWin->GetPosPixel().Y()
+ pListBox->GetPosPixel().Y()
+ pListBox->GetSizePixel().Height();
if( _rNewConPos.Y() > nListBoxBottom )
_rNewConPos.Y() = nListBoxBottom + 2;
}
else
_rNewConPos.Y() += static_cast<sal_Int32>(pListBox->GetPosPixel().Y()*0.5);
_rNewDescrPos.Y() = _rNewConPos.Y();
}
}
// class OConnectionLine
OConnectionLine::OConnectionLine( OTableConnection* _pConn, OConnectionLineDataRef _pLineData )
: m_pTabConn( _pConn )
,m_pData( _pLineData )
{
}
OConnectionLine::OConnectionLine( const OConnectionLine& _rLine )
{
m_pData = new OConnectionLineData( *_rLine.GetData() );
*this = _rLine;
}
OConnectionLine::~OConnectionLine()
{
}
OConnectionLine& OConnectionLine::operator=( const OConnectionLine& rLine )
{
if( &rLine != this )
{
// as the data does not belong to me, I don't delete the old one
m_pData->CopyFrom(*rLine.GetData());
// CopyFrom is virtual, therefore it is not a problem, if m_pData is of a type derived from OTableConnectionData
m_pTabConn = rLine.m_pTabConn;
m_aSourceConnPos = rLine.m_aSourceConnPos;
m_aDestConnPos = rLine.m_aDestConnPos;
m_aSourceDescrLinePos = rLine.m_aSourceDescrLinePos;
m_aDestDescrLinePos = rLine.m_aDestDescrLinePos;
}
return *this;
}
Rectangle OConnectionLine::GetBoundingRect()
{
// determine surrounding rectangle
Rectangle aBoundingRect( Point(0,0), Point(0,0) );
if( !IsValid() )
return aBoundingRect;
Point aTopLeft;
Point aBottomRight;
if( m_aSourceDescrLinePos.Y() <= m_aDestDescrLinePos.Y() )
{
aTopLeft.Y() = m_aSourceDescrLinePos.Y();
aBottomRight.Y() = m_aDestDescrLinePos.Y();
}
else
{
aTopLeft.Y() = m_aDestDescrLinePos.Y();
aBottomRight.Y() = m_aSourceDescrLinePos.Y();
}
if( m_aSourceDescrLinePos.X() <= m_aDestDescrLinePos.X() )
{
aTopLeft.X() = m_aSourceDescrLinePos.X();
aBottomRight.X() = m_aDestDescrLinePos.X();
}
else
{
aTopLeft.X() = m_aDestDescrLinePos.X();
aBottomRight.X() = m_aSourceDescrLinePos.X();
}
const OTableWindow* pSourceWin = m_pTabConn->GetSourceWin();
const OTableWindow* pDestWin = m_pTabConn->GetDestWin();
// line proceeds in in z-Form
if( pSourceWin == pDestWin || std::abs(m_aSourceConnPos.X() - m_aDestConnPos.X()) > std::abs(m_aSourceDescrLinePos.X() - m_aDestDescrLinePos.X()) )
{
aTopLeft.X() -= DESCRIPT_LINE_WIDTH;
aBottomRight.X() += DESCRIPT_LINE_WIDTH;
}
aBoundingRect = Rectangle( aTopLeft-Point(2,17), aBottomRight+Point(2,2) );
return aBoundingRect;
}
void calcPointX1(const OTableWindow* _pWin,Point& _rNewConPos,Point& _rNewDescrPos)
{
_rNewConPos.X() = _pWin->GetPosPixel().X() + _pWin->GetSizePixel().Width();
_rNewDescrPos.X() = _rNewConPos.X();
_rNewConPos.X() += DESCRIPT_LINE_WIDTH;
}
void calcPointX2(const OTableWindow* _pWin,Point& _rNewConPos,Point& _rNewDescrPos)
{
_rNewConPos.X() = _pWin->GetPosPixel().X();
_rNewDescrPos.X() = _rNewConPos.X();
_rNewConPos.X() -= DESCRIPT_LINE_WIDTH;
}
sal_Bool OConnectionLine::RecalcLine()
{
// Windows and entries must be set
const OTableWindow* pSourceWin = m_pTabConn->GetSourceWin();
const OTableWindow* pDestWin = m_pTabConn->GetDestWin();
if( !pSourceWin || !pDestWin )
return sal_False;
SvTreeListEntry* pSourceEntry = pSourceWin->GetListBox()->GetEntryFromText( GetData()->GetSourceFieldName() );
SvTreeListEntry* pDestEntry = pDestWin->GetListBox()->GetEntryFromText( GetData()->GetDestFieldName() );
// determine X-coordinates
Point aSourceCenter( 0, 0 );
Point aDestCenter( 0, 0 );
aSourceCenter.X() = pSourceWin->GetPosPixel().X() + (long)( 0.5*pSourceWin->GetSizePixel().Width() );
aDestCenter.X() = pDestWin->GetPosPixel().X() + (long)( 0.5*pDestWin->GetSizePixel().Width() );
const OTableWindow* pFirstWin = pDestWin;
const OTableWindow* pSecondWin = pSourceWin;
Point* pFirstConPos = &m_aDestConnPos;
Point* pFirstDescrPos = &m_aDestDescrLinePos;
Point* pSecondConPos = &m_aSourceConnPos;
Point* pSecondDescrPos = &m_aSourceDescrLinePos;
if( aDestCenter.X() > aSourceCenter.X() )
{
pFirstWin = pSourceWin;
pSecondWin = pDestWin;
pFirstConPos = &m_aSourceConnPos;
pFirstDescrPos = &m_aSourceDescrLinePos;
pSecondConPos = &m_aDestConnPos;
pSecondDescrPos = &m_aDestDescrLinePos;
}
if ( pFirstWin == pSecondWin && pSourceEntry != pDestEntry )
calcPointX2(pFirstWin,*pFirstConPos,*pFirstDescrPos);
else
calcPointX1(pFirstWin,*pFirstConPos,*pFirstDescrPos);
calcPointX2(pSecondWin,*pSecondConPos,*pSecondDescrPos);
// determine aSourceConnPosY
calcPointsYValue(pSourceWin,pSourceEntry,m_aSourceConnPos,m_aSourceDescrLinePos);
// determine aDestConnPosY
calcPointsYValue(pDestWin,pDestEntry,m_aDestConnPos,m_aDestDescrLinePos);
return sal_True;
}
void OConnectionLine::Draw( OutputDevice* pOutDev )
{
const sal_uInt16 nRectSize = 3;
// calculate new dimension
if( !RecalcLine() )
return;
// draw lines
if (m_pTabConn->IsSelected())
pOutDev->SetLineColor(Application::GetSettings().GetStyleSettings().GetHighlightColor());
else
pOutDev->SetLineColor(Application::GetSettings().GetStyleSettings().GetWindowTextColor());
LineInfo aLineInfo;
if ( m_pTabConn->IsSelected() )
aLineInfo.SetWidth(3);
Polygon aPoly;
aPoly.Insert(0,m_aSourceDescrLinePos);
aPoly.Insert(1,m_aSourceConnPos);
aPoly.Insert(2,m_aDestConnPos);
aPoly.Insert(3,m_aDestDescrLinePos);
pOutDev->DrawPolyLine(aPoly,aLineInfo);
// draw the connection rectangles
pOutDev->SetFillColor(Application::GetSettings().GetStyleSettings().GetWindowColor());
Point aVector(nRectSize,nRectSize);
pOutDev->DrawRect( calcRect(m_aSourceDescrLinePos,aVector) );
pOutDev->DrawRect( calcRect( m_aDestDescrLinePos,aVector) );
}
sal_Bool OConnectionLine::IsValid() const
{
return m_pData.is();
}
double dist_Euklid(const Point &p1, const Point& p2,const Point& pM, Point& q)
{
Point v(p2 - p1);
Point w(pM - p1);
double a = sqrt((double)(v.X()*v.X() + v.Y()*v.Y()));
double l = (v.X() * w.Y() - v.Y() * w.X()) / a;
double a2 = w.X()*v.X()+w.Y()*v.Y();
a = a2 / (a * a);
q.X() = long(p1.X() + a * v.X());
q.Y() = long(p1.Y() + a * v.Y());
return l;
}
bool OConnectionLine::CheckHit( const Point& rMousePos ) const
{
/*
course of action with HitTest:
the distance is calculated according to Euklid.
*/
Point q;
double l = fabs(dist_Euklid(m_aSourceConnPos,m_aDestConnPos,rMousePos,q));
if( l < HIT_SENSITIVE_RADIUS)
{
if(::std::min(m_aSourceConnPos.X(),m_aDestConnPos.X()) <= q.X() && ::std::min(m_aSourceConnPos.Y(),m_aDestConnPos.Y()) <= q.Y()
&& q.X() <= ::std::max(m_aDestConnPos.X(),m_aSourceConnPos.X()) && q.Y() <= ::std::max(m_aDestConnPos.Y(),m_aSourceConnPos.Y()))
return true;
}
return false;
}
Rectangle OConnectionLine::GetSourceTextPos() const
{
return GetTextPos(m_pTabConn->GetSourceWin(),m_aSourceConnPos,m_aSourceDescrLinePos);
}
Rectangle OConnectionLine::GetDestTextPos() const
{
return GetTextPos(m_pTabConn->GetDestWin(),m_aDestConnPos,m_aDestDescrLinePos);
}
Point OConnectionLine::getMidPoint() const
{
Point aDest = m_aDestConnPos - m_aSourceConnPos;
aDest.X() /= 2;
aDest.Y() /= 2;
return m_aSourceConnPos + aDest;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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