trentpiercy/flutter-candlesticks

pub package

flutter_candlesticks

Elegant OHLC Candlestick and Trade Volume charts for Flutter

Usage

Install for Flutter with pub.

Property	Description
data	Required. List of maps containing open, high, low, close and volumeto
enableGridLines	Required. Enable or disable grid lines
volumeProp	Required. Proportion of container to be given to volume bars
lineWidth	Default 1.0. Width of most lines
gridLineAmount	Default 5. Number of grid lines to draw. Labels automatically assigned
gridLineWidth	Default 0.5. Width of grid lines
gridLineColor	Default Colors.grey. Color of grid lines
gridLineLabelColor	Default Colors.grey. Color of grid line labels
labelPrefix	Default "$". Prefix before grid line labels.
increaseColor	Default Colors.green. Color of increasing candles.
decreaseColor	Default Colors.red. Color of decreasing candles.

Examples

No Grid Lines

new OHLCVGraph(
    data: sampleData,
    enableGridLines: false,
    volumeProp: 0.2
    )
)

https://raw.githubusercontent.com/trentpiercy/flutter-candlesticks/master/screenshots/white_large.pnghttps://raw.githubusercontent.com/trentpiercy/flutter-candlesticks/master/screenshots/dark_large.png

Candle size dynamically changes by amount of data

https://raw.githubusercontent.com/trentpiercy/flutter-candlesticks/master/screenshots/white_small.pnghttps://raw.githubusercontent.com/trentpiercy/flutter-candlesticks/master/screenshots/dark_small.png

Grid Lines

new OHLCVGraph(
    data: sampleData,
    enableGridLines: true,
    volumeProp: 0.2,
    gridLineAmount: 5,
    gridLineColor: Colors.grey[300],
    gridLineLabelColor: Colors.grey
    )
)

https://raw.githubusercontent.com/trentpiercy/flutter-candlesticks/master/screenshots/white_small_gridlines.pnghttps://raw.githubusercontent.com/trentpiercy/flutter-candlesticks/master/screenshots/dark_large_gridlines.png

Full App Example

import 'package:flutter/material.dart';
import 'package:flutter_candlesticks/flutter_candlesticks.dart';

void main() {
  List sampleData = [
    {"open":50.0, "high":100.0, "low":40.0, "close":80, "volumeto":5000.0},
    {"open":80.0, "high":90.0, "low":55.0, "close":65, "volumeto":4000.0},
    {"open":65.0, "high":120.0, "low":60.0, "close":90, "volumeto":7000.0},
    {"open":90.0, "high":95.0, "low":85.0, "close":80, "volumeto":2000.0},
    {"open":80.0, "high":85.0, "low":40.0, "close":50, "volumeto":3000.0},
  ];

  runApp(
    new MaterialApp(
      home: new Scaffold(
        body: new Center(
          child: new Container(
            height: 500.0,
            child: new OHLCVGraph(
                data: sampleData,
                enableGridLines: false,
                volumeProp: 0.2
            ),
          ),
        ),
      )
    )
  );
}