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Diffstat (limited to 'sw/source/core/layout/virtoutp.cxx')
| -rw-r--r-- | sw/source/core/layout/virtoutp.cxx | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/sw/source/core/layout/virtoutp.cxx b/sw/source/core/layout/virtoutp.cxx new file mode 100644 index 000000000..dd044317d --- /dev/null +++ b/sw/source/core/layout/virtoutp.cxx @@ -0,0 +1,189 @@ +/* -*- 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 "virtoutp.hxx" +#include <viewopt.hxx> +#include <rootfrm.hxx> +#include <osl/diagnose.h> + +/* The SWLayVout class manages the virtual output devices. + * RootFrame has a static member of this class which is created in FrameInit + * and destroyed in FrameFinit. + * */ + +bool SwRootFrame::FlushVout() +{ + if (SwRootFrame::s_pVout->IsFlushable()) + { + SwRootFrame::s_pVout->Flush_(); + return true; + } + return false; +} + +bool SwRootFrame::HasSameRect( const SwRect& rRect ) +{ + if (SwRootFrame::s_pVout->IsFlushable()) + return ( rRect == SwRootFrame::s_pVout->GetOrgRect() ); + return false; +} + +/** method to set mapping/pixel offset for virtual output device + + OD 12.11.2002 #96272# - method implements two solutions for the mapping of + the virtual output device: + The old solution set the origin of the mapping mode, which will be used in + the virtual output device. This causes several paint errors, because of the + different roundings in the virtual output device and the original output device. + The new solution avoids the rounding differences between virtual and original + output device by setting a pixel offset at the virtual output device. + A define controls, which solution is used, in order to switch in escalation + back to old solution. + + @param _pOrgOutDev + input parameter - constant instance of the original output device, for which + the virtual output device is created. + + @param _pVirDev + input/output parameter - instance of the virtual output device. + + @param _rNewOrigin + input parameter - constant instance of the origin, which will be used in + the virtual output device +*/ +// define to control, if old or new solution for setting the mapping for +// a virtual output device is used. +static void SetMappingForVirtDev( const Point& _rNewOrigin, + const vcl::RenderContext* _pOrgOutDev, + vcl::RenderContext* _pVirDev ) +{ + // new solution: set pixel offset at virtual output device + Point aPixelOffset = _pOrgOutDev->LogicToPixel( _rNewOrigin ); + _pVirDev->SetPixelOffset( Size( -aPixelOffset.X(), -aPixelOffset.Y() ) ); +} + +// rSize must be pixel coordinates! +bool SwLayVout::DoesFit( const Size &rNew ) +{ + if( rNew.Height() > VIRTUALHEIGHT ) + return false; + if( rNew.IsEmpty() ) + return false; + if( rNew.Width() <= m_aSize.Width() ) + return true; + if( !m_pVirDev ) + { + m_pVirDev = VclPtr<VirtualDevice>::Create(); + m_pVirDev->SetLineColor(); + if( m_pOut ) + { + if( m_pVirDev->GetFillColor() != m_pOut->GetFillColor() ) + m_pVirDev->SetFillColor( m_pOut->GetFillColor() ); + } + } + + if( rNew.Width() > m_aSize.Width() ) + { + m_aSize.setWidth( rNew.Width() ); + if( !m_pVirDev->SetOutputSizePixel( m_aSize ) ) + { + m_pVirDev.disposeAndClear(); + m_aSize.setWidth( 0 ); + return false; + } + } + return true; +} + +/// change 2nd parameter <rRect> - no longer <const> +/// in order to return value of class member variable <aRect>, if virtual +/// output is used. +/// <aRect> contains the rectangle that represents the area the virtual +/// output device is used for and that is flushed at the end. +void SwLayVout::Enter( SwViewShell *pShell, SwRect &rRect, bool bOn ) +{ + Flush(); + +#ifdef DBG_UTIL + if( pShell->GetViewOptions()->IsTest3() ) + { + ++m_nCount; + return; + } +#endif + + bOn = bOn && !m_nCount && rRect.HasArea() && pShell->GetWin(); + ++m_nCount; + if( !bOn ) + return; + + m_pShell = pShell; + m_pOut = nullptr; + OutputDevice *pO = m_pShell->GetOut(); +// We don't cheat on printers or virtual output devices... + if( OUTDEV_WINDOW != pO->GetOutDevType() ) + return; + + m_pOut = pO; + Size aPixSz( m_pOut->PixelToLogic( Size( 1,1 )) ); + SwRect aTmp( rRect ); + aTmp.AddWidth(aPixSz.Width()/2 + 1 ); + aTmp.AddHeight(aPixSz.Height()/2 + 1 ); + tools::Rectangle aTmpRect( pO->LogicToPixel( aTmp.SVRect() ) ); + + OSL_ENSURE( !m_pShell->GetWin()->IsReallyVisible() || + aTmpRect.GetWidth() <= m_pShell->GetWin()->GetOutputSizePixel().Width() + 2, + "Paintwidth bigger than visarea?" ); + // Does the rectangle fit in our buffer? + if( !DoesFit( aTmpRect.GetSize() ) ) + { + m_pOut = nullptr; + return; + } + + m_aRect = SwRect( pO->PixelToLogic( aTmpRect ) ); + + SetOutDev( m_pShell, m_pVirDev ); + + if( m_pVirDev->GetFillColor() != m_pOut->GetFillColor() ) + m_pVirDev->SetFillColor( m_pOut->GetFillColor() ); + + MapMode aMapMode( m_pOut->GetMapMode() ); + // use method to set mapping + //aMapMode.SetOrigin( Point(0,0) - aRect.Pos() ); + ::SetMappingForVirtDev( m_aRect.Pos(), m_pOut, m_pVirDev ); + + if( aMapMode != m_pVirDev->GetMapMode() ) + m_pVirDev->SetMapMode( aMapMode ); + + // set value of parameter <rRect> + rRect = m_aRect; + +} + +void SwLayVout::Flush_() +{ + OSL_ENSURE( m_pVirDev, "SwLayVout::DrawOut: nothing left Toulouse" ); + m_pOut->DrawOutDev( m_aRect.Pos(), m_aRect.SSize(), + m_aRect.Pos(), m_aRect.SSize(), *m_pVirDev ); + SetOutDev( m_pShell, m_pOut ); + m_pOut = nullptr; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |