120 lines
4.0 KiB
C++
120 lines
4.0 KiB
C++
/*
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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) 2007-2014 Jean-Pierre Charras, jp.charras at wanadoo.fr
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* Copyright (C) 1992-2015 KiCad Developers, see CHANGELOG.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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* @file macros.h
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* @brief This file contains miscellaneous helper definitions and functions.
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*/
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#ifndef MACROS_H
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#define MACROS_H
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#include <wx/wx.h>
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/**
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* Macro TO_UTF8
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* converts a wxString to a UTF8 encoded C string for all wxWidgets build modes.
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* wxstring is a wxString, not a wxT() or _(). The scope of the return value
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* is very limited and volatile, but can be used with printf() style functions well.
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* NOTE: Trying to convert it to a function is tricky because of the
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* type of the parameter!
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*/
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#define TO_UTF8( wxstring ) ( (const char*) (wxstring).utf8_str() )
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/**
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* function FROM_UTF8
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* converts a UTF8 encoded C string to a wxString for all wxWidgets build modes.
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*/
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static inline wxString FROM_UTF8( const char* cstring )
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{
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wxString line = wxString::FromUTF8( cstring );
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if( line.IsEmpty() ) // happens when cstring is not a valid UTF8 sequence
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line = wxConvCurrent->cMB2WC( cstring ); // try to use locale conversion
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return line;
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}
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/**
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* Function GetChars
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* returns a wxChar* to the actual wxChar* data within a wxString, and is
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* helpful for passing strings to wxString::Printf() and wxString::Format().
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* It can also be passed a UTF8 parameter which will be converted to wxString
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* by the compiler.
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* <p>
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* Example: wxString::Format( wxT( "%s" ), GetChars( UTF( "some text" ) ) );
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* <p>
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* When wxWidgets is properly built for KiCad, a const wxChar* points to either:
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* <ul>
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* <li> 32 bit unicode characters on linux/OSX or </li>
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* <li> 16 bit UTF16 characters on windows. </li>
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* </ul>
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* Note that you cannot pass 8 bit strings to wxString::Format() or Printf() so this
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* is a useful conversion function to wxChar*, which is needed by wxString::Format().
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*
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* @return const wxChar* - a pointer to the UNICODE or UTF16 (on windows) text.
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*/
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static inline const wxChar* GetChars( const wxString& s )
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{
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return (const wxChar*) s.c_str();
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}
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/// # of elements in an array
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#define DIM( x ) unsigned( sizeof(x) / sizeof( (x)[0] ) ) // not size_t
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/**
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* Function MIRROR
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* Mirror @a aPoint in @a aMirrorRef.
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*/
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template<typename T>
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void MIRROR( T& aPoint, const T& aMirrorRef )
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{
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aPoint = -( aPoint - aMirrorRef ) + aMirrorRef;
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}
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/**
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* Function Clamp
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* limits @a value within the range @a lower <= @a value <= @a upper. It will work
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* on temporary expressions, since they are evaluated only once, and it should work
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* on most if not all numeric types, string types, or any type for which "operator < ()"
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* is present. The arguments are accepted in this order so you can remember the
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* expression as a memory aid:
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* <p>
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* result is: lower <= value <= upper
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*/
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template <typename T> inline const T& Clamp( const T& lower, const T& value, const T& upper )
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{
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wxASSERT( lower <= upper );
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if( value < lower )
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return lower;
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else if( upper < value )
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return upper;
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return value;
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}
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#endif /* ifdef MACRO_H */
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