flags extension
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23146 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
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@@ -16,36 +16,34 @@
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#pragma interface "flags.h"
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#endif
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#include <bitset>
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// wxFlags should be applied to an enum, then this can be used like
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// wxBitset should be applied to an enum, then this can be used like
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// bitwise operators but keeps the type safety and information, the
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// enums must be in a sequence , their value determines the bit position
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// that they represent
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// The api is made as close as possible to <bitset>
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template <class T> class wxFlags
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template <class T> class wxBitset
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{
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friend class wxEnumData ;
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public:
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// creates a wxFlags<> object with all flags initialized to 0
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wxFlags() { m_data = 0; }
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// creates a wxBitset<> object with all flags initialized to 0
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wxBitset() { m_data = 0; }
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// created a wxFlags<> object initialized according to the bits of the
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// created a wxBitset<> object initialized according to the bits of the
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// integral value val
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wxFlags(unsigned long val) { m_data = val ; }
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wxBitset(unsigned long val) { m_data = val ; }
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// copies the content in the new wxFlags<> object from another one
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wxFlags(const wxFlags &src) { m_data = src.m_data; }
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// copies the content in the new wxBitset<> object from another one
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wxBitset(const wxBitset &src) { m_data = src.m_data; }
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// creates a wxFlags<> object that has the specific flag set
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wxFlags(const T el) { m_data |= 1 << el; }
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// creates a wxBitset<> object that has the specific flag set
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wxBitset(const T el) { m_data |= 1 << el; }
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// returns the integral value that the bits of this object represent
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unsigned long to_ulong() const { return m_data ; }
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// assignment
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wxFlags &operator =(const wxFlags &rhs)
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wxBitset &operator =(const wxBitset &rhs)
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{
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m_data = rhs.m_data;
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return *this;
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@@ -53,7 +51,7 @@ public:
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// bitwise or operator, sets all bits that are in rhs and leaves
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// the rest unchanged
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wxFlags &operator |=(const wxFlags &rhs)
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wxBitset &operator |=(const wxBitset &rhs)
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{
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m_data |= rhs.m_data;
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return *this;
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@@ -61,7 +59,7 @@ public:
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// bitwsie exclusive-or operator, toggles the value of all bits
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// that are set in bits and leaves all others unchanged
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wxFlags &operator ^=(const wxFlags &rhs) // difference
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wxBitset &operator ^=(const wxBitset &rhs) // difference
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{
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m_data ^= rhs.m_data;
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return *this;
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@@ -69,7 +67,7 @@ public:
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// bitwise and operator, resets all bits that are not in rhs and leaves
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// all others unchanged
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wxFlags &operator &=(const wxFlags &rhs) // intersection
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wxBitset &operator &=(const wxBitset &rhs) // intersection
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{
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m_data &= rhs.m_data;
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return *this;
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@@ -77,47 +75,47 @@ public:
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// bitwise or operator, returns a new bitset that has all bits set that set are in
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// bitset2 or in this bitset
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wxFlags operator |(const wxFlags &bitset2) const // union
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wxBitset operator |(const wxBitset &bitset2) const // union
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{
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wxFlags<T> s;
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wxBitset<T> s;
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s.m_data = m_data | bitset2.m_data;
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return s;
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}
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// bitwise exclusive-or operator, returns a new bitset that has all bits set that are set either in
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// bitset2 or in this bitset but not in both
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wxFlags operator ^(const wxFlags &bitset2) const // difference
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wxBitset operator ^(const wxBitset &bitset2) const // difference
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{
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wxFlags<T> s;
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wxBitset<T> s;
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s.m_data = m_data ^ bitset2.m_data;
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return s;
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}
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// bitwise and operator, returns a new bitset that has all bits set that are set both in
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// bitset2 and in this bitset
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wxFlags operator &(const wxFlags &bitset2) const // intersection
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wxBitset operator &(const wxBitset &bitset2) const // intersection
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{
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wxFlags<T> s;
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wxBitset<T> s;
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s.m_data = m_data & bitset2.m_data;
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return s;
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}
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// sets appropriate the bit to true
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wxFlags& set(const T el) //Add element
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wxBitset& set(const T el) //Add element
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{
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m_data |= 1 << el;
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return *this;
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}
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// clears the appropriate flag to false
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wxFlags& reset(const T el) //remove element
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wxBitset& reset(const T el) //remove element
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{
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m_data &= ~(1 << el);
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return *this;
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}
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// clear all flags
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wxFlags& reset()
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wxBitset& reset()
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{
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m_data = 0;
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return *this;
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@@ -142,13 +140,13 @@ public:
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}
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// true if both have the same flags
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bool operator ==(const wxFlags &rhs) const
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bool operator ==(const wxBitset &rhs) const
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{
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return m_data == rhs.m_data;
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}
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// true if both differ in their flags set
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bool operator !=(const wxFlags &rhs) const
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bool operator !=(const wxBitset &rhs) const
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{
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return !operator==(rhs);
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}
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@@ -159,5 +157,11 @@ private :
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unsigned long m_data;
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};
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#define WX_DEFINE_FLAGS( flags ) \
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struct flags \
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{\
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flags(long data=0) :m_data(data) {} \
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long m_data ;\
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} ;
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#endif
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