329 lines
15 KiB
C
329 lines
15 KiB
C
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///////////////////////////////////////////////////////////////////////////////
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// Name: range.h
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// Purpose: Simple min-max range class and associated selection array class
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// Author: John Labenski
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// Created: 12/01/2000
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// Copyright: (c) John Labenski 2004
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// Licence: wxWidgets
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///////////////////////////////////////////////////////////////////////////////
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#ifndef __WX_RANGE_H__
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#define __WX_RANGE_H__
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#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
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#pragma interface "range.h"
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#endif
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#include "wx/things/thingdef.h"
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class WXDLLIMPEXP_THINGS wxRangeInt;
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class WXDLLIMPEXP_THINGS wxRangeDouble;
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class WXDLLIMPEXP_THINGS wxRangeIntSelection;
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class WXDLLIMPEXP_THINGS wxRangeDoubleSelection;
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#include "wx/dynarray.h"
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WX_DECLARE_OBJARRAY_WITH_DECL(wxRangeInt, wxArrayRangeInt, class WXDLLIMPEXP_THINGS);
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WX_DECLARE_OBJARRAY_WITH_DECL(wxRangeDouble, wxArrayRangeDouble, class WXDLLIMPEXP_THINGS);
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WX_DECLARE_OBJARRAY_WITH_DECL(wxRangeIntSelection, wxArrayRangeIntSelection, class WXDLLIMPEXP_THINGS);
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WX_DECLARE_OBJARRAY_WITH_DECL(wxRangeDoubleSelection, wxArrayRangeDoubleSelection, class WXDLLIMPEXP_THINGS);
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// Empty versions of ranges (0, -1)
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WXDLLIMPEXP_DATA_THINGS(extern const wxRangeInt) wxEmptyRangeInt;
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WXDLLIMPEXP_DATA_THINGS(extern const wxRangeDouble) wxEmptyRangeDouble;
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//=============================================================================
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// wxRangeInt
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//=============================================================================
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class WXDLLIMPEXP_THINGS wxRangeInt
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{
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public:
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inline wxRangeInt(int min_=0, int max_=0) : m_min(min_), m_max(max_) { }
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// Get the width of the range
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inline int GetRange() const { return m_max - m_min + 1; }
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// Get/Set the min/max values of the range
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inline int GetMin() const { return m_min; }
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inline int GetMax() const { return m_max; }
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inline void SetMin(int min_) { m_min = min_; }
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inline void SetMax(int max_) { m_max = max_; }
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inline void Set(int min_, int max_) { m_min = min_, m_max = max_; }
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// Shift the range by i
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void Shift(int i) { m_min += i; m_max += i; }
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// Is the range empty, min < max
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inline bool IsEmpty() const { return m_min > m_max; }
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// Swap the min and max values
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inline void SwapMinMax() { register int temp=m_min; m_min=m_max; m_max=temp; }
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// returns -1 for i < min, 0 for in range, +1 for i > m_max
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inline int Position(int i) const { return i < m_min ? -1 : (i > m_max ? 1 : 0); }
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// Is this point or the range within this range
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inline bool Contains( int i ) const { return (i >= m_min) && (i <= m_max); }
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inline bool Contains( const wxRangeInt &r ) const
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{ return (r.m_min >= m_min) && (r.m_max <= m_max); }
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// returns if the range intersects the given range
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inline bool Intersects(const wxRangeInt& r) const
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{ return Intersect(r).IsEmpty(); }
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// returns the intersection of the range with the other
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inline wxRangeInt Intersect(const wxRangeInt& r) const
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{ return wxRangeInt(wxMax(m_min, r.m_min), wxMin(m_max, r.m_max)); }
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// returns the union of the range with the other
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inline wxRangeInt Union(const wxRangeInt& r) const
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{ return wxRangeInt(wxMin(m_min, r.m_min), wxMax(m_max, r.m_max)); }
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// Is this point inside or touches +/- 1 of the range
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inline bool Touches( int i ) const
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{ return !IsEmpty() && wxRangeInt(m_min-1, m_max+1).Contains(i); }
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// Is the range adjoining this range
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inline bool Touches( const wxRangeInt &r ) const
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{ if (IsEmpty() || r.IsEmpty()) return false;
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wxRangeInt rExp(m_min-1, m_max+1);
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return rExp.Contains(r.m_min) || rExp.Contains(r.m_max); }
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// combine this single point with the range by expanding the m_min/m_max to contain it
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// if only_if_touching then only combine if i is just outside the range by +/-1
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// returns true if the range has been changed at all, false if not
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bool Combine(int i, bool only_if_touching = false);
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bool Combine(const wxRangeInt &r, bool only_if_touching = false);
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// delete range r from this, return true is anything was done
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// if r spans this then this and right become wxEmptyRangeInt
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// else if r is inside of this then this is the left side and right is the right
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// else if r.m_min > m_min then this is the left side
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// else if r.m_min < m_min this is the right side
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bool Delete( const wxRangeInt &r, wxRangeInt *right=NULL );
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// operators
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// no copy ctor or assignment operator - the defaults are ok
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// comparison
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inline bool operator==(const wxRangeInt& r) const { return (m_min == r.m_min)&&(m_max == r.m_max); }
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inline bool operator!=(const wxRangeInt& r) const { return !(*this == r); }
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// Adding ranges unions them to create the largest range
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inline wxRangeInt operator+(const wxRangeInt& r) const { return Union(r); }
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inline wxRangeInt& operator+=(const wxRangeInt& r) { if(r.m_min<m_min) m_min=r.m_min; if(r.m_max>m_max) m_max=r.m_max; return *this; }
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// Subtracting ranges intersects them to get the smallest range
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inline wxRangeInt operator-(const wxRangeInt& r) const { return Intersect(r); }
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inline wxRangeInt& operator-=(const wxRangeInt& r) { if(r.m_min>m_min) m_min=r.m_min; if(r.m_max<m_max) m_max=r.m_max; return *this; }
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// Adding/Subtracting with an int shifts the range
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inline wxRangeInt operator+(const int i) const { return wxRangeInt(m_min+i, m_max+i); }
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inline wxRangeInt operator-(const int i) const { return wxRangeInt(m_min-i, m_max-i); }
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inline wxRangeInt& operator+=(const int i) { Shift( i); return *this; }
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inline wxRangeInt& operator-=(const int i) { Shift(-i); return *this; }
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int m_min, m_max;
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};
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//=============================================================================
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// wxRangeIntSelection - ordered 1D array of wxRangeInts, combines to minimze size
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//=============================================================================
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class WXDLLIMPEXP_THINGS wxRangeIntSelection
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{
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public :
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wxRangeIntSelection() {}
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wxRangeIntSelection(const wxRangeInt& range) { if (!range.IsEmpty()) m_ranges.Add(range); }
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wxRangeIntSelection(const wxRangeIntSelection &ranges) { Copy(ranges); }
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// Make a full copy of the source
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void Copy(const wxRangeIntSelection &source)
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{
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m_ranges.Clear();
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WX_APPEND_ARRAY(m_ranges, source.GetRangeArray());
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}
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// Get the number of individual ranges
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inline int GetCount() const { return m_ranges.GetCount(); }
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// Get total number of items selected in all ranges, ie. sum of all wxRange::GetWidths
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int GetItemCount() const;
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// Get the ranges themselves to iterate though for example
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const wxArrayRangeInt& GetRangeArray() const { return m_ranges; }
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// Get a single range
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const wxRangeInt& GetRange( int index ) const;
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inline const wxRangeInt& Item( int index ) const { return GetRange(index); }
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// Get a range of the min range value and max range value
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wxRangeInt GetBoundingRange() const;
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// Clear all the ranges
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void Clear() { m_ranges.Clear(); }
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// Is this point or range contained in the selection
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inline bool Contains( int i ) const { return Index(i) != wxNOT_FOUND; }
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inline bool Contains( const wxRangeInt &range ) const { return Index(range) != wxNOT_FOUND; }
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// Get the index of the range that contains this, or wxNOT_FOUND
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int Index( int i ) const;
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int Index( const wxRangeInt &range ) const;
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// Get the nearest index of a range, index returned contains i or is the one just below
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// returns -1 if it's below all the selected ones, or no ranges
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// returns GetCount() if it's above all the selected ones
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int NearestIndex( int i ) const;
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// Add the range to the selection, returning if anything was done, false if already selected
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bool SelectRange( const wxRangeInt &range );
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// Remove the range to the selection, returning if anything was done, false if not already selected
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bool DeselectRange( const wxRangeInt &range );
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// Set the min and max bounds of the ranges, returns true if anything was done
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bool BoundRanges( const wxRangeInt &range );
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// operators
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inline const wxRangeInt& operator[](int index) const { return GetRange(index); }
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wxRangeIntSelection& operator = (const wxRangeIntSelection& other) { Copy(other); return *this; }
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protected :
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wxArrayRangeInt m_ranges;
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};
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//=============================================================================
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// wxRangeDouble
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//=============================================================================
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class WXDLLIMPEXP_THINGS wxRangeDouble
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{
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public:
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inline wxRangeDouble(wxDouble min_=0, wxDouble max_=0) : m_min(min_), m_max(max_) {}
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// Get the width of the range
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inline wxDouble GetRange() const { return m_max - m_min; }
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// Get/Set the min/max values of the range
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inline wxDouble GetMin() const { return m_min; }
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inline wxDouble GetMax() const { return m_max; }
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inline void SetMin(wxDouble min_) { m_min = min_; }
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inline void SetMax(wxDouble max_) { m_max = max_; }
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inline void Set(wxDouble min_, wxDouble max_) { m_min = min_, m_max = max_; }
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// Shift the range by i
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void Shift(wxDouble i) { m_min += i; m_max += i; }
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// Is the range empty, min < max
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inline bool IsEmpty() const { return m_min > m_max; }
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// Swap the min and max values
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inline void SwapMinMax() { register wxDouble temp = m_min; m_min = m_max; m_max = temp; }
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// returns -1 for i < min, 0 for in range, +1 for i > m_max
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inline int Position(wxDouble i) const { return i < m_min ? -1 : i > m_max ? 1 : 0; }
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// Is this point or the range within this range
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inline bool Contains( wxDouble i ) const { return (i>=m_min)&&(i<=m_max); }
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inline bool Contains( const wxRangeDouble &r ) const
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{ return (r.m_min>=m_min)&&(r.m_max<=m_max); }
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// returns if the range intersects the given range
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inline bool Intersects(const wxRangeDouble& r) const
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{ return Intersect(r).IsEmpty(); }
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// returns the intersection of the range with the other
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inline wxRangeDouble Intersect(const wxRangeDouble& r) const
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{ return wxRangeDouble(wxMax(m_min, r.m_min), wxMin(m_max, r.m_max)); }
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// returns the union of the range with the other
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inline wxRangeDouble Union(const wxRangeDouble& r) const
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{ return wxRangeDouble(wxMin(m_min, r.m_min), wxMax(m_max, r.m_max)); }
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// no touches for double since what would be a good eps value?
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// combine this single point with the range by expanding the m_min/m_max to contain it
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// if only_if_touching then only combine if there is overlap
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// returns true if the range has been changed at all, false if not
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bool Combine(wxDouble i);
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bool Combine( const wxRangeDouble &r, bool only_if_touching = false );
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// delete range r from this, return true is anything was done
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// if r spans this then this and right become wxEmptyRangeInt
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// else if r is inside of this then this is the left side and right is the right
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// else if r.m_min > m_min then this is the left side
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// else if r.m_min < m_min this is the right side
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bool Delete( const wxRangeDouble &r, wxRangeDouble *right=NULL );
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// operators
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// no copy ctor or assignment operator - the defaults are ok
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// comparison
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inline bool operator==(const wxRangeDouble& r) const { return (m_min == r.m_min)&&(m_max == r.m_max); }
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inline bool operator!=(const wxRangeDouble& r) const { return !(*this == r); }
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// Adding ranges unions them to create the largest range
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inline wxRangeDouble operator+(const wxRangeDouble& r) const { return Union(r); }
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inline wxRangeDouble& operator+=(const wxRangeDouble& r) { if(r.m_min<m_min) m_min=r.m_min; if(r.m_max>m_max) m_max=r.m_max; return *this; }
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// Subtracting ranges intersects them to get the smallest range
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inline wxRangeDouble operator-(const wxRangeDouble& r) const { return Intersect(r); }
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inline wxRangeDouble& operator-=(const wxRangeDouble& r) { if(r.m_min>m_min) m_min=r.m_min; if(r.m_max<m_max) m_max=r.m_max; return *this; }
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// Adding/Subtracting with a double shifts the range
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inline wxRangeDouble operator+(const wxDouble i) const { return wxRangeDouble(m_min+i, m_max+i); }
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inline wxRangeDouble operator-(const wxDouble i) const { return wxRangeDouble(m_min-i, m_max-i); }
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inline wxRangeDouble& operator+=(const wxDouble i) { Shift( i); return *this; }
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inline wxRangeDouble& operator-=(const wxDouble i) { Shift(-i); return *this; }
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wxDouble m_min, m_max;
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};
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//=============================================================================
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// wxRangeDoubleSelection - ordered 1D array of wxRangeDoubles, combines to minimze size
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//=============================================================================
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class WXDLLIMPEXP_THINGS wxRangeDoubleSelection
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{
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public :
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wxRangeDoubleSelection() {}
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wxRangeDoubleSelection(const wxRangeDouble& range) { if (!range.IsEmpty()) m_ranges.Add(range); }
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wxRangeDoubleSelection(const wxRangeDoubleSelection &ranges) { Copy(ranges); }
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// Make a full copy of the source
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void Copy(const wxRangeDoubleSelection &source)
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{
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m_ranges.Clear();
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WX_APPEND_ARRAY(m_ranges, source.GetRangeArray());
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}
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// Get the number of individual ranges
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inline int GetCount() const { return m_ranges.GetCount(); }
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// Get the ranges themselves to iterate though for example
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const wxArrayRangeDouble& GetRangeArray() const { return m_ranges; }
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// Get a single range
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const wxRangeDouble& GetRange( int index ) const;
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inline const wxRangeDouble& Item( int index ) const { return GetRange(index); }
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// Get a range of the min range value and max range value
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wxRangeDouble GetBoundingRange() const;
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// Clear all the ranges
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void Clear() { m_ranges.Clear(); }
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// Is this point or range contained in the selection
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inline bool Contains( wxDouble i ) const { return Index(i) != wxNOT_FOUND; }
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inline bool Contains( const wxRangeDouble &range ) const { return Index(range) != wxNOT_FOUND; }
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// Get the index of the range that contains this, or wxNOT_FOUND
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int Index( wxDouble i ) const;
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int Index( const wxRangeDouble &range ) const;
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// Get the nearest index of a range, index returned contains i or is the one just below
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// returns -1 if it's below all the selected ones, or no ranges
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// returns GetCount() if it's above all the selected ones
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int NearestIndex( wxDouble i ) const;
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// Add the range to the selection, returning if anything was done, false if already selected
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bool SelectRange( const wxRangeDouble &range);
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// Remove the range to the selection, returning if anything was done, false if not already selected
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bool DeselectRange( const wxRangeDouble &range);
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// Set the min and max bounds of the ranges, returns true if anything was done
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bool BoundRanges( const wxRangeDouble &range );
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// operators
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inline const wxRangeDouble& operator[](int index) const { return GetRange(index); }
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wxRangeDoubleSelection& operator = (const wxRangeDoubleSelection& other) { Copy(other); return *this; }
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protected :
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wxArrayRangeDouble m_ranges;
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};
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#endif // __WX_RANGE_H__
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