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Diffstat (limited to 'dbaccess/source/ui/querydesign/ConnectionLine.cxx')
| -rw-r--r-- | dbaccess/source/ui/querydesign/ConnectionLine.cxx | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/dbaccess/source/ui/querydesign/ConnectionLine.cxx b/dbaccess/source/ui/querydesign/ConnectionLine.cxx new file mode 100644 index 000000000..77a67004e --- /dev/null +++ b/dbaccess/source/ui/querydesign/ConnectionLine.cxx @@ -0,0 +1,356 @@ +/* -*- 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> +#include <vcl/settings.hxx> + +using namespace dbaui; +const tools::Long DESCRIPT_LINE_WIDTH = 15; +const tools::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 + */ + tools::Rectangle calcRect(const Point& _rBase,const Point& _aVector) + { + return tools::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 + */ + tools::Rectangle GetTextPos(const OTableWindow* _pWin, const Point& _aConnPos,const Point& _aDescrLinePos) + { + VclPtr<OTableWindowListBox> pListBox = _pWin ? _pWin->GetListBox() : nullptr; + OSL_ENSURE(_pWin && pListBox, "OConnectionLine::GetSourceTextPos : invalid call !"); + + tools::Rectangle aReturn; + if ( pListBox ) + { + const tools::Long nRowHeight = pListBox->get_widget().get_height_rows(1); + aReturn.SetTop( _aConnPos.Y() - nRowHeight ); + aReturn.SetBottom( aReturn.Top() + nRowHeight ); + if (_aDescrLinePos.X() < _aConnPos.X()) + { + aReturn.SetLeft( _aDescrLinePos.X() ); + aReturn.SetRight( aReturn.Left() + _aConnPos.X() - _aDescrLinePos.X() ); + } + else + { + aReturn.SetLeft( _aConnPos.X() ); + aReturn.SetRight( 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 _nEntry the source or dest entry + @param _rNewConPos (in/out) the connection pos + @param _rNewDescrPos (in/out) the description pos + */ + void calcPointsYValue(const OTableWindow* _pWin, int _nEntry, Point& _rNewConPos, Point& _rNewDescrPos) + { + const OTableWindowListBox* pListBox = _pWin->GetListBox(); + _rNewConPos.setY( _pWin->GetPosPixel().Y() ); + + std::unique_ptr<weld::TreeIter> xEntry; + const weld::TreeView& rTreeView = pListBox->get_widget(); + + if (_nEntry != -1) + { + _rNewConPos.AdjustY(pListBox->GetPosPixel().Y() ); + xEntry = rTreeView.make_iterator(); + if (!rTreeView.get_iter_first(*xEntry) || !rTreeView.iter_nth_sibling(*xEntry, _nEntry)) + xEntry.reset(); + } + + if (xEntry) + { + auto nEntryPos = rTreeView.get_row_area(*xEntry).Center().Y(); + + if( nEntryPos >= 0 ) + { + _rNewConPos.AdjustY(nEntryPos); + } + else + { + const auto nRowHeight = rTreeView.get_height_rows(1); + _rNewConPos.AdjustY( -static_cast<tools::Long>( 0.5 * nRowHeight ) ); + } + + tools::Long nListBoxBottom = _pWin->GetPosPixel().Y() + + pListBox->GetPosPixel().Y() + + pListBox->GetSizePixel().Height(); + if( _rNewConPos.Y() > nListBoxBottom ) + _rNewConPos.setY( nListBoxBottom + 2 ); + } + else + _rNewConPos.AdjustY(static_cast<sal_Int32>(pListBox->GetPosPixel().Y()*0.5) ); + + _rNewDescrPos.setY( _rNewConPos.Y() ); + } +} + +OConnectionLine::OConnectionLine( OTableConnection* _pConn, OConnectionLineDataRef const & _pLineData ) + : m_pTabConn( _pConn ) + , m_pData( _pLineData ) +{ +} + +OConnectionLine::OConnectionLine( const OConnectionLine& _rLine ) + : m_pTabConn(nullptr) +{ + 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; +} + +tools::Rectangle OConnectionLine::GetBoundingRect() const +{ + // determine surrounding rectangle + tools::Rectangle aBoundingRect( Point(0,0), Point(0,0) ); + if( !IsValid() ) + return aBoundingRect; + + Point aTopLeft; + Point aBottomRight; + + if( m_aSourceDescrLinePos.Y() <= m_aDestDescrLinePos.Y() ) + { + aTopLeft.setY( m_aSourceDescrLinePos.Y() ); + aBottomRight.setY( m_aDestDescrLinePos.Y() ); + } + else + { + aTopLeft.setY( m_aDestDescrLinePos.Y() ); + aBottomRight.setY( m_aSourceDescrLinePos.Y() ); + } + + if( m_aSourceDescrLinePos.X() <= m_aDestDescrLinePos.X() ) + { + aTopLeft.setX( m_aSourceDescrLinePos.X() ); + aBottomRight.setX( m_aDestDescrLinePos.X() ); + } + else + { + aTopLeft.setX( m_aDestDescrLinePos.X() ); + aBottomRight.setX( m_aSourceDescrLinePos.X() ); + } + + const OTableWindow* pSourceWin = m_pTabConn->GetSourceWin(); + const OTableWindow* pDestWin = m_pTabConn->GetDestWin(); + // line proceeds in z-Form + if( pSourceWin == pDestWin || std::abs(m_aSourceConnPos.X() - m_aDestConnPos.X()) > std::abs(m_aSourceDescrLinePos.X() - m_aDestDescrLinePos.X()) ) + { + aTopLeft.AdjustX( -DESCRIPT_LINE_WIDTH ); + aBottomRight.AdjustX(DESCRIPT_LINE_WIDTH ); + } + + aBoundingRect = tools::Rectangle( aTopLeft-Point(2,17), aBottomRight+Point(2,2) ); + + return aBoundingRect; +} + +static void calcPointX1(const OTableWindow* _pWin,Point& _rNewConPos,Point& _rNewDescrPos) +{ + _rNewConPos.setX( _pWin->GetPosPixel().X() + _pWin->GetSizePixel().Width() ); + _rNewDescrPos.setX( _rNewConPos.X() ); + _rNewConPos.AdjustX(DESCRIPT_LINE_WIDTH ); +} + +static void calcPointX2(const OTableWindow* _pWin,Point& _rNewConPos,Point& _rNewDescrPos) +{ + _rNewConPos.setX( _pWin->GetPosPixel().X() ); + _rNewDescrPos.setX( _rNewConPos.X() ); + _rNewConPos.AdjustX( -DESCRIPT_LINE_WIDTH ); +} + +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 false; + + int nSourceEntry = pSourceWin->GetListBox()->GetEntryFromText( GetData()->GetSourceFieldName() ); + int nDestEntry = pDestWin->GetListBox()->GetEntryFromText( GetData()->GetDestFieldName() ); + + // determine X-coordinates + Point aSourceCenter( 0, 0 ); + Point aDestCenter( 0, 0 ); + + aSourceCenter.setX( pSourceWin->GetPosPixel().X() + static_cast<tools::Long>( 0.5*pSourceWin->GetSizePixel().Width() ) ); + aDestCenter.setX( pDestWin->GetPosPixel().X() + static_cast<tools::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 && nSourceEntry != nDestEntry) + calcPointX2(pFirstWin,*pFirstConPos,*pFirstDescrPos); + else + calcPointX1(pFirstWin,*pFirstConPos,*pFirstDescrPos); + calcPointX2(pSecondWin,*pSecondConPos,*pSecondDescrPos); + + // determine aSourceConnPosY + calcPointsYValue(pSourceWin, nSourceEntry, m_aSourceConnPos,m_aSourceDescrLinePos); + + // determine aDestConnPosY + calcPointsYValue(pDestWin, nDestEntry, m_aDestConnPos,m_aDestDescrLinePos); + + return 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); + tools::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) ); +} + +bool OConnectionLine::IsValid() const +{ + return m_pData.is(); +} + +static double dist_Euklid(const Point &p1, const Point& p2,const Point& pM, Point& q) +{ + Point v(p2 - p1); + Point w(pM - p1); + double a = std::hypot(v.X(), 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.setX( tools::Long(p1.X() + a * v.X()) ); + q.setY( tools::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; +} + +tools::Rectangle OConnectionLine::GetSourceTextPos() const +{ + return GetTextPos(m_pTabConn->GetSourceWin(),m_aSourceConnPos,m_aSourceDescrLinePos); +} + +tools::Rectangle OConnectionLine::GetDestTextPos() const +{ + return GetTextPos(m_pTabConn->GetDestWin(),m_aDestConnPos,m_aDestDescrLinePos); +} + +Point OConnectionLine::getMidPoint() const +{ + Point aDest = m_aDestConnPos - m_aSourceConnPos; + aDest.setX( aDest.X() / 2 ); + aDest.setY( aDest.Y() / 2 ); + + return m_aSourceConnPos + aDest; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |