FlutterMoneyFormatter

FlutterMoneyFormatter is a Flutter extension to formatting various types of currencies according to the characteristics you like, without having to be tied to any localization.

Dependencies :

Screenshot

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Install

For complete steps in installing FlutterMoneyFormatter you can see in the Installation Guide.

Usage

Import the library

import 'package:flutter_money_formatter/flutter_money_formatter.dart';

Getting Started

To be able to format your double value into the various formats you want, you first need to create a FlutterMoneyFormatter instance like the following:

FlutterMoneyFormatter fmf = FlutterMoneyFormatter(
    amount: 12345678.9012345
);

Note, the code above still uses the default configuration as explained here.

After that, you can request various results of the format as follows:

// normal form
print(fmf.output.nonSymbol); // 12,345,678.90
print(fmf.output.symbolOnLeft); // $ 12,345,678.90
print(fmf.output.symbolOnRight); // 12,345,678.90 $
print(fmf.output.fractionDigitsOnly); // 90
print(fmf.output.withoutFractionDigits); // 12,345,678

// compact form
print(fmf.output.compactNonSymbol) // 12.3M
print(fmf.output.compactSymbolOnLeft) // $ 12.3M
print(fmf.output.compactSymbolOnRight) // 12.3M $

If you will use the output format several times, I strongly recommend that you initialize a variable as in the following example:

MoneyFormatterOutput fo = fmf.output;

Or directly when initializing the FlutterMoneyFormatter instance as in the following example:

MoneyFormatterOutput fo = FlutterMoneyFormatter(
    amount: 12345678.9012345
).output;

So you can immediately take the value more easily as in the following example:

// normal form
print(fo.nonSymbol); // 12,345,678.90
print(fo.symbolOnLeft); // $ 12,345,678.90
print(fo.symbolOnRight); // 12,345,678.90 $
print(fo.fractionDigitsOnly); // 90
print(fo.withoutFractionDigits); // 12,345,678

// compact form
print(fo.compactNonSymbol) // 12.3M
print(fo.compactLeftSymbol) // $ 12.3M
print(fo.compactRightSymbol) // 12.3M $

See demo section to get more info.

Configurations

To adjust the format to suit your needs, you can set it through the settings parameter:

FlutterMoneyFormatter fmf = new FlutterMoneyFormatter(
    amount: 12345678.9012345,
    settings: MoneyFormatterSettings(
        symbol: 'IDR',
        thousandSeparator: '.',
        decimalSeparator: ',',
        symbolAndNumberSeparator: ' ',
        fractionDigits: 3,
        compactFormatType: CompactFormatType.sort
    )
)

Of course you are not required to initialize the entire configuration in the settings (MoneyFormatterSettings) parameter as in the example above. You can change one or more of the configurations above. This is because each configuration above is not mandatory and has a default value.

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Properties, Methods, and Functions

• FlutterMoneyFormatter

Property Names	Data Type	Descriptions
amount	double	Amount number that will be formatted.
settings	MoneyFormatterSettings	See here.
output	MoneyFormatterOutput	See here.
comparator	MoneyFormatterCompare	See here.
copyWith	FlutterMoneyFormatter	see here
fastCalc	FlutterMoneyFormatter	see here

• MoneyFormatterSettings

Configuration Property	Data Type	Default Value	Description
symbol	String	$ (Dollar Sign)	The symbol that will be used on formatted output.
thousandSeparator	String	,	The character that will be used as thousand separator on formatted output.
decimalSeparator	String	.	The character that will be used as decimal separator on formatted output.
fractionDigits	int	2	The fraction digits that will be used on formatted output.
symbolAndNumberSeparator	String	' ' (Space)	The character that will be used as separator between formatted number and currency symbol.
compactFormatType	CompactFormatType	CompactFormatType.short	See here.

• CompactFormatType

You can change the type of compact format like for million using M or million, or trillion using T or trillion. and so on. This type only supports two type as described below:

Value	Description
CompactFormatType.short	Used to make the compact format displayed using short text.
CompactFormatType.long	Used to make the compact format displayed using long text.

• MoneyFormatterOutput

You can use formats that match your needs through properties found in the MoneyFormatterOutput instance.

Property Names	Data Type	Descriptions
nonSymbol	String	The results of the format of the currency are normal and without a currency symbol. Example: 12,345,678.90
symbolOnLeft	String	The results of the normal currency format and with currency symbols are on the left. Example: $ 12,345,678.90
symbolOnRight	String	The results of the normal currency format and with currency symbols are on the right. Example: 12,345,678.90 $
compactNonSymbol	String	The results of the currency format are compact and without a currency symbol. Example: 12.3M
compactSymbolOnLeft	String	The results of the currency format are compact and with currency symbols on the left. example: $ 12.3M
compactSymbolOnRight	String	The results of the currency format are compact and with currency symbols on the right. example: 12.3M $
fractionDigitsOnly	String	Only give the fraction value. Example: 90
withoutFractionDigits	String	Give a value without fractions. Example: 12,345,678

• MoneyFormatterCompare

Method	Parameter	Descriptions
isLowerThan	amount	Check current instance-amount is lower than [amount] or not.
isGreaterThan	amount	Check current instance-amount is greater than [amount] or not.
isEqual	amount	Check current instance amount is equal than [amount] or not.
isEqualOrLowerThan	amount	Check current instance amount is equal or lower than [amount] or not.
isEqualOrGreaterThan	amount	Check current instance amount is equal or greater than [amount] or not.

Example of using a comparator:

FlutterMoneyFormatter fmf = FlutterMoneyFormatter(amount: 12345678.9012345);
double comparerValue = 5678.9012;

print(fmf.comparator.isEqual(comparerValue)); // false
print(fmf.comparator.isGreaterThan(comparerValue)); // true

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FastCalc

fastCalc is a function that can be used to perform various fast calculation processes that you might need. In implementing it, the fastCalc function gives the output of a FlutterMoneyFormatter instance so you can perform several calculation functions at once with the chaining method.

Function:

FlutterMoneyFormatter fastCalc({
    @required FastCalcType type, 
    @required double amount
})

Implementation:

FlutterMoneyFormatter fmf = FlutterMoneyFormatter(amount: 12345.678);
fmf.fastCalc(type: FastCalcType.addition, amount: 1.111);
fmf.fastCalc(type: FastCalcType.substraction, amount: 2.222);

print(fmf.output.nonSymbol); // 12,345.68

Because it supports the chaining process, the example above can be shortened as follows:

FlutterMoneyFormatter fmf = FlutterMoneyFormatter(amount: 12345.678)
    .fastCalc(type: FastCalcType.addition, amount: 1.111)
    .fastCalc(type: FastCalcType.substraction, amount: 2.222);

print(fmf.output.nonSymbol);  // 12,345.68

The type parameter used by the fastCalc function has the FastCalcType data type which is an enum. The following table is an explanation for the FastCalcType enum:

Index	Name	Description
0	addition	Used to do addition calculations.
1	substraction	Used to do substraction calculations.
2	multiplication	Used to do multiplication calculations.
3	division	Used to do division calculations.
4	percentageAddition	Used to do the addition calculations base on percentage.
5	percentageSubstraction	Used to do the substraction calculations base on percentage.

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Duplicating Instance

For some reasons, you may need to duplicate the instance and just need to change some configurations. To do that, you can use the copyWith method as below:

FlutterMoneyFormatter fmf = FlutterMoneyFormatter(amount: 12345678.9012345);

print(fmf.output.symbolOnLeft); // $ 12,345,678.90
print(fmf.copyWith(symbol: 'IDR', symbolAndNumberSeparator: '-').output.symbolOnLeft); // IDR-12,345,678.90

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Demo

For more complete samples, you can grab it from the example directory.

Our Other Package

See our other packages here.

Help Me

If you find some issues or bugs, please report here. You can also help in requesting new features here.

ChangeLog

Are you curious about the changes that occur in each version? See here for detailed informations.

LICENSE

Copyright (c) 2019, Fadhly Permata <[email protected]>
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

The views and conclusions contained in the software and documentation are those
of the authors and should not be interpreted as representing official policies,
either expressed or implied, of the 'FlutterMoneyFormatter' project.