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kicad/common/base_units.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2012 CERN
* Copyright (C) 1992-2011 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
*/
/**
* @author Wayne Stambaugh <stambaughw@verizon.net>
* @file base_units.cpp
* @brief Code to handle objects that require both schematic and board internal units.
* @note This file is an ugly hack to solve the problem of formatting the base units
* for either schematics or boards in objects that are include in both domains.
* At some point in the future. This code should be rolled back into the
* appropriate object and build with the correct internal unit formatting
* depending on the application.
*/
#include <base_struct.h>
#include <class_title_block.h>
#include <common.h>
#include <base_units.h>
#if defined( PCBNEW ) || defined( CVPCB ) || defined( EESCHEMA ) || defined( GERBVIEW )
#define IU_TO_MM( x ) ( x / IU_PER_MM )
#define IU_TO_IN( x ) ( x / IU_PER_MILS / 1000 )
#define MM_TO_IU( x ) ( x * IU_PER_MM )
#define IN_TO_IU( x ) ( x * IU_PER_MILS * 1000 )
#else
#error "Cannot resolve internal units due to no definition of EESCHEMA, CVPCB or PCBNEW."
#endif
double To_User_Unit( EDA_UNITS_T aUnit, double aValue )
{
switch( aUnit )
{
case MILLIMETRES:
return IU_TO_MM( aValue );
case INCHES:
return IU_TO_IN( aValue );
default:
return aValue;
}
}
/* Convert a value to a string using double notation.
* For readability, the mantissa has 0, 1, 3 or 4 digits, depending on units
* for unit = inch the mantissa has 3 digits (Eeschema) or 4 digits
* for unit = mil the mantissa has 0 digits (Eeschema) or 1 digits
* for unit = mm the mantissa has 3 digits (Eeschema) or 4 digits
* Should be used only to display info in status,
* but not in dialogs, because 4 digits only
* could truncate the actual value
*/
wxString CoordinateToString( int aValue, bool aConvertToMils )
{
return LengthDoubleToString( (double) aValue, aConvertToMils );
}
wxString LengthDoubleToString( double aValue, bool aConvertToMils )
{
wxString text;
const wxChar* format;
double value = To_User_Unit( g_UserUnit, aValue );
if( g_UserUnit == INCHES )
{
if( aConvertToMils )
{
#if defined( EESCHEMA )
format = wxT( "%.0f" );
#else
format = wxT( "%.1f" );
#endif
value *= 1000;
}
else
{
#if defined( EESCHEMA )
format = wxT( "%.3f" );
#else
format = wxT( "%.4f" );
#endif
}
}
else
{
#if defined( EESCHEMA )
format = wxT( "%.2f" );
#else
format = wxT( "%.3f" );
#endif
}
text.Printf( format, value );
if( g_UserUnit == INCHES )
text += ( aConvertToMils ) ? _( " mils" ) : _( " in" );
else
text += _( " mm" );
return text;
}
/* Remove trailing 0 from a string containing a converted float number.
* the trailing 0 are removed if the mantissa has more
* than aTrailingZeroAllowed digits and some trailing 0
*/
void StripTrailingZeros( wxString& aStringValue, unsigned aTrailingZeroAllowed )
{
struct lconv * lc = localeconv();
char sep = lc->decimal_point[0];
unsigned sep_pos = aStringValue.Find( sep );
if( sep_pos > 0 )
{
// We want to keep at least aTrailingZeroAllowed digits after the separator
unsigned min_len = sep_pos + aTrailingZeroAllowed + 1;
while( aStringValue.Len() > min_len )
{
if( aStringValue.Last() == '0' )
aStringValue.RemoveLast();
else
break;
}
}
}
/* Convert a value to a string using double notation.
* For readability, the mantissa has 3 or more digits (max 8 digits),
* the trailing 0 are removed if the mantissa has more than 3 digits
* and some trailing 0
* This function should be used to display values in dialogs because a value
* entered in mm (for instance 2.0 mm) could need up to 8 digits mantissa
* if displayed in inch to avoid truncation or rounding made just by the printf function.
* otherwise the actual value is rounded when read from dialog and converted
* in internal units, and therefore modified.
*/
wxString ReturnStringFromValue( EDA_UNITS_T aUnit, int aValue, bool aAddUnitSymbol )
{
wxString stringValue;
double value_to_print;
value_to_print = To_User_Unit( aUnit, aValue );
#if defined( EESCHEMA )
stringValue.Printf( wxT( "%.3f" ), value_to_print );
#else
#if defined( USE_PCBNEW_NANOMETRES )
stringValue.Printf( wxT( "%.8f" ), value_to_print );
#else
stringValue.Printf( wxT( "%.4f" ), value_to_print );
#endif
// Strip trailing zeros. However, keep at least 3 digits in mantissa
// For readability
StripTrailingZeros( stringValue, 3 );
#endif
if( aAddUnitSymbol )
{
switch( aUnit )
{
case INCHES:
stringValue += _( " \"" );
break;
case MILLIMETRES:
stringValue += _( " mm" );
break;
case UNSCALED_UNITS:
break;
}
}
return stringValue;
}
void PutValueInLocalUnits( wxTextCtrl& aTextCtr, int aValue )
{
wxString msg = ReturnStringFromValue( g_UserUnit, aValue );
aTextCtr.SetValue( msg );
}
double From_User_Unit( EDA_UNITS_T aUnit, double aValue )
{
double value;
switch( aUnit )
{
case MILLIMETRES:
value = MM_TO_IU( aValue );
break;
case INCHES:
value = IN_TO_IU( aValue );
break;
default:
case UNSCALED_UNITS:
value = aValue;
}
return value;
}
int ReturnValueFromString( EDA_UNITS_T aUnits, const wxString& aTextValue )
{
double value;
double dtmp = 0;
// Acquire the 'right' decimal point separator
const struct lconv* lc = localeconv();
wxChar decimal_point = lc->decimal_point[0];
wxString buf( aTextValue.Strip( wxString::both ) );
// Convert the period in decimal point
buf.Replace( wxT( "." ), wxString( decimal_point, 1 ) );
// An ugly fix needed by WxWidgets 2.9.1 that sometimes
// back to a point as separator, although the separator is the comma
// TODO: remove this line if WxWidgets 2.9.2 fixes this issue
buf.Replace( wxT( "," ), wxString( decimal_point, 1 ) );
// Find the end of the numeric part
unsigned brk_point = 0;
while( brk_point < buf.Len() )
{
wxChar ch = buf[brk_point];
if( !( (ch >= '0' && ch <='9') || (ch == decimal_point) || (ch == '-') || (ch == '+') ) )
{
break;
}
++brk_point;
}
// Extract the numeric part
buf.Left( brk_point ).ToDouble( &dtmp );
// Check the optional unit designator (2 ch significant)
wxString unit( buf.Mid( brk_point ).Strip( wxString::leading ).Left( 2 ).Lower() );
if( unit == wxT( "in" ) || unit == wxT( "\"" ) )
{
aUnits = INCHES;
}
else if( unit == wxT( "mm" ) )
{
aUnits = MILLIMETRES;
}
else if( unit == wxT( "mi" ) || unit == wxT( "th" ) ) // Mils or thous
{
aUnits = INCHES;
dtmp /= 1000;
}
value = From_User_Unit( aUnits, dtmp );
return KiROUND( value );
}
int ReturnValueFromString( const wxString& aTextValue )
{
int value;
value = ReturnValueFromString( g_UserUnit, aTextValue);
return value;
}
int ReturnValueFromTextCtrl( const wxTextCtrl& aTextCtr )
{
int value;
wxString msg = aTextCtr.GetValue();
value = ReturnValueFromString( g_UserUnit, msg );
return value;
}
wxString& operator <<( wxString& aString, const wxPoint& aPos )
{
aString << wxT( "@ (" ) << CoordinateToString( aPos.x );
aString << wxT( "," ) << CoordinateToString( aPos.y );
aString << wxT( ")" );
return aString;
}
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