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authorsaurabhb172020-02-26 16:04:40 +0530
committersaurabhb172020-02-26 16:04:40 +0530
commit039ac92480a09266146fc5b0c9ec67a32a2565ad (patch)
tree7b6cef031a580680690a0f32410db940f7e7d7d5 /common/base_units.cpp
parentaa35045840b78d3f48212db45da59a2e5c69b223 (diff)
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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 <macros.h>
+#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 ) || defined( PL_EDITOR )
+#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
+
+
+// Helper function to print a float number without using scientific notation
+// and no trailing 0
+// So we cannot always just use the %g or the %f format to print a fp number
+// this helper function uses the %f format when needed, or %g when %f is
+// not well working and then removes trailing 0
+
+std::string Double2Str( double aValue )
+{
+ char buf[50];
+ int len;
+
+ if( aValue != 0.0 && fabs( aValue ) <= 0.0001 )
+ {
+ // For these small values, %f works fine,
+ // and %g gives an exponent
+ len = sprintf( buf, "%.16f", aValue );
+
+ while( --len > 0 && buf[len] == '0' )
+ buf[len] = '\0';
+
+ if( buf[len] == '.' )
+ buf[len] = '\0';
+ else
+ ++len;
+ }
+ else
+ {
+ // For these values, %g works fine, and sometimes %f
+ // gives a bad value (try aValue = 1.222222222222, with %.16f format!)
+ len = sprintf( buf, "%.16g", aValue );
+ }
+
+ return std::string( buf, len );
+}
+
+
+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 );
+
+ case DEGREES:
+ return aValue / 10.0f;
+
+ 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,
+ * 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 StringFromValue( EDA_UNITS_T aUnit, int aValue, bool aAddUnitSymbol )
+{
+ double value_to_print = To_User_Unit( aUnit, aValue );
+
+#if defined( EESCHEMA )
+ wxString stringValue = wxString::Format( wxT( "%.3f" ), value_to_print );
+
+ // Strip trailing zeros. However, keep at least 3 digits in mantissa
+ // For readability
+ StripTrailingZeros( stringValue, 3 );
+
+#else
+
+ char buf[50];
+ int len;
+
+ if( value_to_print != 0.0 && fabs( value_to_print ) <= 0.0001 )
+ {
+ len = sprintf( buf, "%.10f", value_to_print );
+
+ while( --len > 0 && buf[len] == '0' )
+ buf[len] = '\0';
+
+ if( buf[len]=='.' || buf[len]==',' )
+ buf[len] = '\0';
+ else
+ ++len;
+ }
+ else
+ {
+ len = sprintf( buf, "%.10g", value_to_print );
+ }
+
+ wxString stringValue( buf, wxConvUTF8 );
+
+#endif
+
+ if( aAddUnitSymbol )
+ {
+ switch( aUnit )
+ {
+ case INCHES:
+ stringValue += _( " \"" );
+ break;
+
+ case MILLIMETRES:
+ stringValue += _( " mm" );
+ break;
+
+ case DEGREES:
+ stringValue += _( " deg" );
+ break;
+
+ case UNSCALED_UNITS:
+ break;
+ }
+ }
+
+ return stringValue;
+}
+
+
+void PutValueInLocalUnits( wxTextCtrl& aTextCtr, int aValue )
+{
+ wxString msg = StringFromValue( 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;
+
+ case DEGREES:
+ // Convert to "decidegrees"
+ value = aValue * 10;
+ break;
+
+ default:
+ case UNSCALED_UNITS:
+ value = aValue;
+ }
+
+ return value;
+}
+
+
+double DoubleValueFromString( 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 );
+
+ buf.ToDouble( &dtmp );
+
+ // Check the optional unit designator (2 ch significant)
+ wxString unit( buf.Mid( brk_point ).Strip( wxString::leading ).Left( 2 ).Lower() );
+
+ if( aUnits == INCHES || aUnits == MILLIMETRES )
+ {
+ 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;
+ }
+ }
+ else if( aUnits == DEGREES )
+ {
+ if( unit == wxT( "ra" ) ) // Radians
+ {
+ dtmp *= 180.0f / M_PI;
+ }
+ }
+
+ value = From_User_Unit( aUnits, dtmp );
+
+ return value;
+}
+
+
+int ValueFromString( EDA_UNITS_T aUnits, const wxString& aTextValue )
+{
+ double value = DoubleValueFromString( aUnits, aTextValue );
+ return KiROUND( value );
+}
+
+
+int ValueFromString( const wxString& aTextValue )
+{
+ int value;
+
+ value = ValueFromString( g_UserUnit, aTextValue);
+
+ return value;
+}
+
+int ValueFromTextCtrl( const wxTextCtrl& aTextCtr )
+{
+ int value;
+ wxString msg = aTextCtr.GetValue();
+
+ value = ValueFromString( 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;
+}
+
+/**
+ * Function AngleToStringDegrees
+ * is a helper to convert the \a double \a aAngle (in internal unit)
+ * to a string in degrees
+ */
+wxString AngleToStringDegrees( double aAngle )
+{
+ wxString text;
+
+ text.Printf( wxT( "%.3f" ), aAngle/10.0 );
+ StripTrailingZeros( text, 1 );
+
+ return text;
+}
+