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203 lines
6.8 KiB
203 lines
6.8 KiB
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2009 jean-pierre.charras@gipsa-lab.inpg.fr
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* Copyright (C) 2011 Wayne Stambaugh <stambaughw@verizon.net>
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* Copyright (C) 2007 KiCad Developers, see change_log.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/**
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* a helper to handle the real device context used in KiCad
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* @file kicad_device_context.h
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*/
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#ifndef __KICAD_DEVICE_CONTEXT_H__
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#define __KICAD_DEVICE_CONTEXT_H__
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#include <wx/dcbuffer.h>
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#if defined(KICAD_USE_BUFFERED_PAINTDC)
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#undef KICAD_USE_BUFFERED_PAINTDC
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#endif
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#if defined(KICAD_USE_BUFFERED_DC)
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#undef KICAD_USE_BUFFERED_DC
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#endif
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// wxWidgets defines the platforms where device context buffering is well behaved. These
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// definitions take advantage of their experience in this area. See <wx/dcbuffer.h> for
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// more information.
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#if wxALWAYS_NATIVE_DOUBLE_BUFFER
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#define KICAD_USE_BUFFERED_PAINTDC 1
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#define KICAD_USE_BUFFERED_DC_HELPER 0
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#define KICAD_USE_BUFFERED_DC 0
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#else
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#define KICAD_USE_BUFFERED_PAINTDC 1
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#define KICAD_USE_BUFFERED_DC_HELPER 1
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#define KICAD_USE_BUFFERED_DC 1
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#endif
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/**
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* Class BUFFERED_DC_HELPER
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* fixes a bug on Windows when using buffered device context.
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*
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* <p>
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* When using buffered device context drawing in Windows, the user scaling must be set to 1
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* and the logical offset must be set to zero before the bitmap blit operation occurs in
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* the destructor of wxBufferdDC but after the normal drawing takes place.
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* </p>
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*/
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class BUFFERED_DC_HELPER
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{
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public:
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BUFFERED_DC_HELPER( wxBufferedDC* aDC )
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: m_dc( aDC ) {}
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virtual ~BUFFERED_DC_HELPER()
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{
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if( m_dc )
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{
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m_dc->SetLogicalOrigin( 0, 0 );
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m_dc->SetUserScale( 1.0, 1.0 );
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}
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}
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private:
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wxBufferedDC* m_dc;
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};
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/**
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* Class EDA_BLIT_NORMALIZER
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* is a helper class for clearing a device context scale and offset parameters before
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* performing a Blit operation.
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* <p>
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* This class keeps a temporary copy of the scale and offset parameters of a device
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* context and then restores them when it goes out of scope.
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* </p>
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*/
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class EDA_BLIT_NORMALIZER
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{
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public:
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EDA_BLIT_NORMALIZER( wxDC* aDC )
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: m_dc( aDC )
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{
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if( aDC )
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{
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aDC->GetUserScale( &m_userScaleX, &m_userScaleY );
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aDC->GetLogicalOrigin( &m_logicalOriginX, &m_logicalOriginY );
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aDC->GetDeviceOrigin( &m_deviceOriginX, &m_deviceOriginY );
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aDC->SetUserScale( 1.0, 1.0 );
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aDC->SetLogicalOrigin( 0, 0 );
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aDC->SetDeviceOrigin( 0, 0 );
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}
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}
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~EDA_BLIT_NORMALIZER()
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{
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if( m_dc )
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{
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m_dc->SetUserScale( m_userScaleX, m_userScaleY );
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m_dc->SetLogicalOrigin( m_logicalOriginX, m_logicalOriginY );
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m_dc->SetDeviceOrigin( m_deviceOriginX, m_deviceOriginY );
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}
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}
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private:
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wxDC* m_dc;
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double m_userScaleX;
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double m_userScaleY;
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int m_logicalOriginX;
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int m_logicalOriginY;
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int m_deviceOriginX;
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int m_deviceOriginY;
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DECLARE_NO_COPY_CLASS( EDA_BLIT_NORMALIZER )
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};
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#if USE_WX_GRAPHICS_CONTEXT
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#include <wx/dcgraph.h>
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#endif
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// Macro used to declare a device context in KiCad:
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#if USE_WX_GRAPHICS_CONTEXT
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//#pragma message( "INSTALL_DC is wxClientDC with wxGCDC" )
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#define INSTALL_DC( name, parent ) \
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wxClientDC _cDC( parent ); \
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wxGCDC name( _cDC ); \
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parent->DoPrepareDC( name ); \
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name.GetGraphicsContext()->Translate( 0.5, 0.5 );
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#else
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#if KICAD_USE_BUFFERED_DC && !KICAD_USE_BUFFERED_DC_HELPER
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//#pragma message( "INSTALL_DC is wxClientDC with wxBufferedDC" )
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#define INSTALL_DC( name, parent ) \
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wxClientDC _cDC( parent ); \
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wxBufferedDC name(&_cDC, _cDC.GetSize() ); \
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parent->DoPrepareDC( name );
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#elif KICAD_USE_BUFFERED_DC && KICAD_USE_BUFFERED_DC_HELPER
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//#pragma message( "INSTALL_DC is wxBufferedDC with BUFFERED_DC_HELPER" )
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#define INSTALL_DC( name, parent ) \
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wxClientDC _cDC( parent ); \
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wxBufferedDC name(&_cDC, _cDC.GetSize() ); \
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parent->DoPrepareDC( name ); \
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BUFFERED_DC_HELPER helper( &name );
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#else
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//#pragma message( "INSTALL_DC is wxClientDC" )
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#define INSTALL_DC( name, parent ) \
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wxClientDC name( parent ); \
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parent->DoPrepareDC( name );
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#endif
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#endif
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#if USE_WX_GRAPHICS_CONTEXT
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//#pragma message( "INSTALL_PAINTDC is wxPaintDC with wxGCDC" )
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#define INSTALL_PAINTDC( name, parent) \
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wxPaintDC _pDC( parent ); \
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wxGCDC name( _pDC ); \
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parent->DoPrepareDC( name ); \
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name.GetGraphicsContext()->Translate( 0.5, 0.5 );
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#elif KICAD_USE_BUFFERED_PAINTDC && !KICAD_USE_BUFFERED_DC_HELPER
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//#pragma message( "INSTALL_PAINTDC is wxAutoBufferedPaintDC" )
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#define INSTALL_PAINTDC( name, parent ) \
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wxAutoBufferedPaintDC name( parent ); \
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parent->DoPrepareDC( name );
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#elif KICAD_USE_BUFFERED_PAINTDC && KICAD_USE_BUFFERED_DC_HELPER
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//#pragma message( "INSTALL_PAINTDC is wxBufferedPaintDC with BUFFERED_DC_HELPER" )
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#define INSTALL_PAINTDC( name, parent ) \
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wxBufferedPaintDC name( parent ); \
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parent->DoPrepareDC( name ); \
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BUFFERED_DC_HELPER help( &name );
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#else
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//#pragma message( "INSTALL_PAINTDC is wxPaintDC" )
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#define INSTALL_PAINTDC(name,parent) \
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wxPaintDC name( parent ); \
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parent->DoPrepareDC( name );
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#endif
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// This macro should be used when drawing objects directly without drawing the background.
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#define INSTALL_UNBUFFERED_DC( name, parent ) \
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wxClientDC name( parent ); \
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parent->DoPrepareDC( name );
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#endif // __KICAD_DEVICE_CONTEXT_H__
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