///////////////////////////////////////////////////////////////////////////// // Name: wx/flags.h // Purpose: a bitset suited for replacing the current style flags // Author: Stefan Csomor // Modified by: // Created: 27/07/03 // RCS-ID: $Id$ // Copyright: (c) 2003 Stefan Csomor // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_SETH__ #define _WX_SETH__ // wxBitset should be applied to an enum, then this can be used like // bitwise operators but keeps the type safety and information, the // enums must be in a sequence , their value determines the bit position // that they represent // The api is made as close as possible to <bitset> template <class T> class wxBitset { friend class wxEnumData ; public: // creates a wxBitset<> object with all flags initialized to 0 wxBitset() { m_data = 0; } // created a wxBitset<> object initialized according to the bits of the // integral value val wxBitset(unsigned long val) { m_data = val ; } // copies the content in the new wxBitset<> object from another one wxBitset(const wxBitset &src) { m_data = src.m_data; } // creates a wxBitset<> object that has the specific flag set wxBitset(const T el) { m_data |= 1 << el; } // returns the integral value that the bits of this object represent unsigned long to_ulong() const { return m_data ; } // assignment wxBitset &operator =(const wxBitset &rhs) { m_data = rhs.m_data; return *this; } // bitwise or operator, sets all bits that are in rhs and leaves // the rest unchanged wxBitset &operator |=(const wxBitset &rhs) { m_data |= rhs.m_data; return *this; } // bitwsie exclusive-or operator, toggles the value of all bits // that are set in bits and leaves all others unchanged wxBitset &operator ^=(const wxBitset &rhs) // difference { m_data ^= rhs.m_data; return *this; } // bitwise and operator, resets all bits that are not in rhs and leaves // all others unchanged wxBitset &operator &=(const wxBitset &rhs) // intersection { m_data &= rhs.m_data; return *this; } // bitwise or operator, returns a new bitset that has all bits set that set are in // bitset2 or in this bitset wxBitset operator |(const wxBitset &bitset2) const // union { wxBitset<T> s; s.m_data = m_data | bitset2.m_data; return s; } // bitwise exclusive-or operator, returns a new bitset that has all bits set that are set either in // bitset2 or in this bitset but not in both wxBitset operator ^(const wxBitset &bitset2) const // difference { wxBitset<T> s; s.m_data = m_data ^ bitset2.m_data; return s; } // bitwise and operator, returns a new bitset that has all bits set that are set both in // bitset2 and in this bitset wxBitset operator &(const wxBitset &bitset2) const // intersection { wxBitset<T> s; s.m_data = m_data & bitset2.m_data; return s; } // sets appropriate the bit to true wxBitset& set(const T el) //Add element { m_data |= 1 << el; return *this; } // clears the appropriate flag to false wxBitset& reset(const T el) //remove element { m_data &= ~(1 << el); return *this; } // clear all flags wxBitset& reset() { m_data = 0; return *this; } // true if this flag is set bool test(const T el) const { return (m_data & (1 << el)) ? true : false; } // true if no flag is set bool none() const { return m_data == 0; } // true if any flag is set bool any() const { return m_data != 0; } // true if both have the same flags bool operator ==(const wxBitset &rhs) const { return m_data == rhs.m_data; } // true if both differ in their flags set bool operator !=(const wxBitset &rhs) const { return !operator==(rhs); } bool operator[] (const T el) const { return test(el) ; } private : unsigned long m_data; }; #define WX_DEFINE_FLAGS( flags ) \ class WXDLLEXPORT flags \ {\ public : \ flags(long data=0) :m_data(data) {} \ long m_data ;\ bool operator ==(const flags &rhs) const { return m_data == rhs.m_data; }\ } ; #endif