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kicad/common/bitmap_base.cpp

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/**
* @file class_bitmap_base.cpp
*/
/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2017 jean-pierre.charras
* Copyright (C) 2011-2022 KiCad Developers, see AUTHORS.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
*/
#include <bitmap_base.h>
#include <eda_rect.h> // for EDA_RECT
#include <gr_basic.h>
#include <math/util.h> // for KiROUND
#include <memory> // for make_unique, unique_ptr
#include <plotters/plotter.h>
#include <richio.h>
#include <wx/bitmap.h> // for wxBitmap
#include <wx/mstream.h>
BITMAP_BASE::BITMAP_BASE( const wxPoint& pos )
{
m_scale = 1.0; // 1.0 = original bitmap size
m_bitmap = nullptr;
m_image = nullptr;
m_ppi = 300; // the bitmap definition. the default is 300PPI
m_pixelSizeIu = 254000.0 / m_ppi; // a pixel size value OK for bitmaps using 300 PPI
// for Eeschema which uses currently 254000PPI
}
BITMAP_BASE::BITMAP_BASE( const BITMAP_BASE& aSchBitmap )
{
m_scale = aSchBitmap.m_scale;
m_ppi = aSchBitmap.m_ppi;
m_pixelSizeIu = aSchBitmap.m_pixelSizeIu;
m_image = nullptr;
m_bitmap = nullptr;
if( aSchBitmap.m_image )
{
m_image = new wxImage( *aSchBitmap.m_image );
m_bitmap = new wxBitmap( *m_image );
}
}
void BITMAP_BASE::ImportData( BITMAP_BASE* aItem )
{
*m_image = *aItem->m_image;
*m_bitmap = *aItem->m_bitmap;
m_scale = aItem->m_scale;
m_ppi = aItem->m_ppi;
m_pixelSizeIu = aItem->m_pixelSizeIu;
}
bool BITMAP_BASE::ReadImageFile( wxInputStream& aInStream )
{
auto new_image = std::make_unique<wxImage>();
if( !new_image->LoadFile( aInStream ) )
{
return false;
}
delete m_image;
m_image = new_image.release();
m_bitmap = new wxBitmap( *m_image );
return true;
}
bool BITMAP_BASE::ReadImageFile( const wxString& aFullFilename )
{
wxImage* new_image = new wxImage();
if( !new_image->LoadFile( aFullFilename ) )
{
delete new_image;
return false;
}
delete m_image;
m_image = new_image;
m_bitmap = new wxBitmap( *m_image );
return true;
}
bool BITMAP_BASE::SaveData( FILE* aFile ) const
{
if( m_image )
{
wxMemoryOutputStream stream;
m_image->SaveFile( stream, wxBITMAP_TYPE_PNG );
// Write binary data in hexadecimal form (ASCII)
wxStreamBuffer* buffer = stream.GetOutputStreamBuffer();
char* begin = (char*) buffer->GetBufferStart();
for( int ii = 0; begin < buffer->GetBufferEnd(); begin++, ii++ )
{
if( ii >= 32 )
{
ii = 0;
if( fprintf( aFile, "\n" ) == EOF )
return false;
}
if( fprintf( aFile, "%2.2X ", *begin & 0xFF ) == EOF )
return false;
}
}
return true;
}
void BITMAP_BASE::SaveData( wxArrayString& aPngStrings ) const
{
if( m_image )
{
wxMemoryOutputStream stream;
m_image->SaveFile( stream, wxBITMAP_TYPE_PNG );
// Write binary data in hexadecimal form (ASCII)
wxStreamBuffer* buffer = stream.GetOutputStreamBuffer();
char* begin = (char*) buffer->GetBufferStart();
wxString line;
for( int ii = 0; begin < buffer->GetBufferEnd(); begin++, ii++ )
{
if( ii >= 32 )
{
ii = 0;
aPngStrings.Add( line );
line.Empty();
}
line << wxString::Format( wxT( "%2.2X " ), *begin & 0xFF );
}
// Add last line:
if( !line.IsEmpty() )
aPngStrings.Add( line );
}
}
bool BITMAP_BASE::LoadData( LINE_READER& aLine, wxString& aErrorMsg )
{
wxMemoryOutputStream stream;
char* line;
while( true )
{
if( !aLine.ReadLine() )
{
aErrorMsg = wxT("Unexpected end of data");
return false;
}
line = aLine.Line();
if( strncasecmp( line, "EndData", 4 ) == 0 )
{
// all the PNG date is read.
// We expect here m_image and m_bitmap are void
m_image = new wxImage();
wxMemoryInputStream istream( stream );
m_image->LoadFile( istream, wxBITMAP_TYPE_PNG );
m_bitmap = new wxBitmap( *m_image );
break;
}
// Read PNG data, stored in hexadecimal,
// each byte = 2 hexadecimal digits and a space between 2 bytes
// and put it in memory stream buffer
int len = strlen( line );
for( ; len > 0; len -= 3, line += 3 )
{
int value = 0;
if( sscanf( line, "%X", &value ) == 1 )
stream.PutC( (char) value );
else
break;
}
}
return true;
}
const EDA_RECT BITMAP_BASE::GetBoundingBox() const
{
EDA_RECT rect;
wxSize size = GetSize();
rect.Inflate( size.x / 2, size.y / 2 );
return rect;
}
void BITMAP_BASE::DrawBitmap( wxDC* aDC, const wxPoint& aPos )
{
if( m_bitmap == nullptr )
return;
wxPoint pos = aPos;
wxSize size = GetSize();
// This fixes a bug in OSX that should be fixed in the 3.0.3 version or later.
if( ( size.x == 0 ) || ( size.y == 0 ) )
return;
// To draw the bitmap, pos is the upper left corner position
pos.x -= size.x / 2;
pos.y -= size.y / 2;
double scale;
int logicalOriginX, logicalOriginY;
aDC->GetUserScale( &scale, &scale );
aDC->GetLogicalOrigin( &logicalOriginX, &logicalOriginY );
bool useTransform = aDC->CanUseTransformMatrix();
// We already have issues to draw a bitmap on the wxDC, depending on wxWidgets version.
// Now we have an issue on wxWidgets 3.1.6 and later to fix the clipboard
// and the bitmap position when using TransformMatrix
// So for version >= 3.1.6 do not use it
// Be carefull before changing the code.
#if wxCHECK_VERSION( 3, 1, 6 )
useTransform = false;
#endif
wxAffineMatrix2D init_matrix = aDC->GetTransformMatrix();
wxPoint clipAreaPos;
if( useTransform )
{
wxAffineMatrix2D matrix = aDC->GetTransformMatrix();
matrix.Translate( pos.x, pos.y );
matrix.Scale( GetScalingFactor(), GetScalingFactor() );
aDC->SetTransformMatrix( matrix );
// Needed on wx <= 3.1.5, and this is strange...
// Nevertheless, this code has problem (the bitmap is not seen)
// with wx version > 3.1.5
clipAreaPos.x = pos.x;
clipAreaPos.y = pos.y;
pos.x = pos.y = 0;
}
else
{
aDC->SetUserScale( scale * GetScalingFactor(), scale * GetScalingFactor() );
aDC->SetLogicalOrigin( logicalOriginX / GetScalingFactor(),
logicalOriginY / GetScalingFactor() );
pos.x = KiROUND( pos.x / GetScalingFactor() );
pos.y = KiROUND( pos.y / GetScalingFactor() );
size.x = KiROUND( size.x / GetScalingFactor() );
size.y = KiROUND( size.y / GetScalingFactor() );
clipAreaPos.x = pos.x;
clipAreaPos.y = pos.y;
}
aDC->DestroyClippingRegion();
aDC->SetClippingRegion( clipAreaPos, size );
if( GetGRForceBlackPenState() )
{
wxBitmap result( m_bitmap->ConvertToImage().ConvertToGreyscale() );
aDC->DrawBitmap( result, pos.x, pos.y, true );
}
else
{
aDC->DrawBitmap( *m_bitmap, pos.x, pos.y, true );
}
if( useTransform )
aDC->SetTransformMatrix( init_matrix );
else
{
aDC->SetUserScale( scale, scale );
aDC->SetLogicalOrigin( logicalOriginX, logicalOriginY );
}
aDC->DestroyClippingRegion();
}
wxSize BITMAP_BASE::GetSize() const
{
wxSize size;
if( m_bitmap )
{
size.x = m_bitmap->GetWidth();
size.y = m_bitmap->GetHeight();
size.x = KiROUND( size.x * GetScalingFactor() );
size.y = KiROUND( size.y * GetScalingFactor() );
}
return size;
}
void BITMAP_BASE::Mirror( bool aVertically )
{
if( m_image )
{
*m_image = m_image->Mirror( not aVertically );
RebuildBitmap();
}
}
void BITMAP_BASE::Rotate( bool aRotateCCW )
{
if( m_image )
{
*m_image = m_image->Rotate90( aRotateCCW );
RebuildBitmap();
}
}
void BITMAP_BASE::PlotImage( PLOTTER* aPlotter,
const wxPoint& aPos,
const COLOR4D& aDefaultColor,
int aDefaultPensize ) const
{
if( m_image == nullptr )
return;
// These 2 lines are useful only for plotters that cannot plot a bitmap
// and plot a rectangle instead of.
aPlotter->SetColor( aDefaultColor );
aPlotter->SetCurrentLineWidth( aDefaultPensize );
aPlotter->PlotImage( *m_image, aPos, GetScalingFactor() );
}
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