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