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81 lines
3.2 KiB
C++
81 lines
3.2 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/numformatter.h
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// Purpose: wxNumberFormatter class
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// Author: Fulvio Senore, Vadim Zeitlin
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// Created: 2010-11-06
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// Copyright: (c) 2010 wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_NUMFORMATTER_H_
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#define _WX_NUMFORMATTER_H_
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#include "wx/string.h"
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// Helper class for formatting numbers with thousands separators which also
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// supports parsing the numbers formatted by it.
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class WXDLLIMPEXP_BASE wxNumberFormatter
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{
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public:
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// Bit masks for ToString()
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enum Style
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{
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Style_None = 0x00,
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Style_WithThousandsSep = 0x01,
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Style_NoTrailingZeroes = 0x02 // Only for floating point numbers
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};
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// Format a number as a string. By default, the thousands separator is
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// used, specify Style_None to prevent this. For floating point numbers,
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// precision can also be specified.
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static wxString ToString(long val,
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int style = Style_WithThousandsSep);
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#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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static wxString ToString(wxLongLong_t val,
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int style = Style_WithThousandsSep);
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#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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static wxString ToString(wxULongLong_t val,
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int style = Style_WithThousandsSep);
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static wxString ToString(double val,
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int precision,
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int style = Style_WithThousandsSep);
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// Parse a string representing a number, possibly with thousands separator.
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//
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// Return true on success and stores the result in the provided location
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// which must be a valid non-NULL pointer.
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static bool FromString(wxString s, long *val);
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#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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static bool FromString(wxString s, wxLongLong_t *val);
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#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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static bool FromString(wxString s, wxULongLong_t *val);
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static bool FromString(wxString s, double *val);
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// Get the decimal separator for the current locale. It is always defined
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// and we fall back to returning '.' in case of an error.
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static wxChar GetDecimalSeparator();
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// Get the thousands separator if grouping of the digits is used by the
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// current locale. The value returned in sep should be only used if the
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// function returns true.
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static bool GetThousandsSeparatorIfUsed(wxChar *sep);
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private:
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// Post-process the string representing an integer.
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static wxString PostProcessIntString(wxString s, int style);
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// Add the thousands separators to a string representing a number without
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// the separators. This is used by ToString(Style_WithThousandsSep).
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static void AddThousandsSeparators(wxString& s);
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// Remove trailing zeroes and, if there is nothing left after it, the
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// decimal separator itself from a string representing a floating point
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// number. Also used by ToString().
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static void RemoveTrailingZeroes(wxString& s);
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// Remove all thousands separators from a string representing a number.
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static void RemoveThousandsSeparators(wxString& s);
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};
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#endif // _WX_NUMFORMATTER_H_
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