@dt-workspace/react-native-heatmap

A modern, highly customizable React Native heatmap component library inspired by GitHub's contribution calendar. Perfect for visualizing activity data, progress tracking, and creating beautiful data representations in your React Native applications.

✨ Features

Core Features

• 🎨 Multiple Color Schemes: GitHub, GitLab, Bitbucket, Heat, Cool, Purple, and more
• 📱 React Native Optimized: Built specifically for mobile performance
• 🎯 TypeScript First: Complete type safety and IntelliSense support
• 📊 Flexible Layouts: Calendar, Grid, and Compact arrangements
• 🎪 Interactive: Enhanced touch handlers for rich interactions
• 🌗 Theme Support: Light and dark mode compatible
• ♿ Accessible: Built-in accessibility features with WCAG compliance
• 🔧 Highly Customizable: Extensive styling and configuration options
• 📦 Lightweight: Minimal dependencies and optimized bundle size

🆕 New in v1.1.0

• 🎬 Advanced Animation System: Entry animations (fade, scale, slide) with stagger effects
• 📱 Enhanced Gesture Support: Pan, zoom, swipe with react-native-gesture-handler
• 💬 Tooltip System: Configurable tooltips with auto-positioning and custom content
• 🔄 Extended Touch Handlers: onLongPress, onPressIn, onPressOut, onDoublePress
• 🎨 New Color Schemes: GitLab, Bitbucket, Accessible, Sunset, Neon themes
• ⚡ Performance Optimizations: Virtualization, lazy loading, memory management
• 🤏 Haptic Feedback: Native haptic feedback integration
• 🎯 Better TypeScript: Enhanced type definitions for all new features

🆕 New in v1.2.0

• 🕒 Time-Based Layouts: 7 new layout types (daily, weekly, monthly, yearly, custom range, timeline scroll, real-time)
• 🎴 CardLayout Component: Flexible card-based layout system with configurable sections
• 📊 Enhanced Data Visualization: Support for different time granularities and ranges
• 🎭 Advanced Theming: Light/dark themes with custom color support
• 🔧 Better Configuration: Comprehensive layout and section configuration options

📸 Preview

GitHub-style contribution calendar with advanced animations, gestures, and tooltips

🚀 Installation

# Using npm
npm install @dt-workspace/react-native-heatmap react-native-svg

# Using yarn
yarn add @dt-workspace/react-native-heatmap react-native-svg

# Using pnpm
pnpm add @dt-workspace/react-native-heatmap react-native-svg

Optional Dependencies (for v1.1.0+ features)

For advanced animations and gestures, install these optional peer dependencies:

# For animations (optional)
npm install react-native-reanimated

# For gestures (optional) 
npm install react-native-gesture-handler

# Or with yarn
yarn add react-native-reanimated react-native-gesture-handler

Platform Setup

iOS: cd ios && pod install

Android: No additional setup required

Expo: Compatible with Expo SDK 48+

📖 Quick Start

import React from 'react';
import { View } from 'react-native';
import { Heatmap } from '@dt-workspace/react-native-heatmap';
import type { HeatmapData } from '@dt-workspace/react-native-heatmap';

const data: HeatmapData[] = [
  { date: '2024-01-01', value: 3 },
  { date: '2024-01-02', value: 7 },
  { date: '2024-01-03', value: 1 },
  // ... more data
];

const App = () => {
  const startDate = new Date('2024-01-01');
  
  return (
    <View style={{ padding: 20 }}>
      <Heatmap
        data={data}
        startDate={startDate}
        colorScheme="github"
        onCellPress={(data, index) => {
          console.log('Pressed:', data);
        }}
      />
    </View>
  );
};

export default App;

🎬 Animations (v1.1.0+)

Create smooth, eye-catching animations for your heatmaps:

<Heatmap
  data={data}
  animated={true}
  animation={{
    enabled: true,
    duration: 300,
    entryAnimation: 'scale', // 'fade', 'scale', 'slide'
    staggerDelay: 10,
    useNativeDriver: true,
  }}
/>

Animation Types

• Fade: Cells fade in smoothly
• Scale: Cells scale up from small to full size
• Slide: Cells slide in from above

🤏 Enhanced Touch & Gestures (v1.1.0+)

Rich interaction support with haptic feedback:

<Heatmap
  data={data}
  // Basic touches
  onCellPress={(data, index) => console.log('Tap:', data)}
  onCellLongPress={(data, index) => console.log('Long press:', data)}
  onCellDoublePress={(data, index) => console.log('Double tap:', data)}
  onCellPressIn={(data, index) => console.log('Press in:', data)}
  onCellPressOut={(data, index) => console.log('Press out:', data)}
  
  // Haptic feedback
  hapticFeedback={true}
  
  // Gesture support (requires react-native-gesture-handler)
  gesture={{
    enabled: true,
    pan: true,
    zoom: true,
    minZoom: 0.5,
    maxZoom: 3.0,
  }}
/>

💬 Tooltips (v1.1.0+)

Beautiful, configurable tooltips with smart positioning:

<Heatmap
  data={data}
  tooltip={{
    enabled: true,
    position: 'auto', // 'top', 'bottom', 'left', 'right', 'auto'
    showArrow: true,
    backgroundColor: '#333',
    textColor: '#fff',
    content: (data) => (
      <View>
        <Text style={{ color: 'white', fontWeight: 'bold' }}>
          {data.date}
        </Text>
        <Text style={{ color: 'white' }}>
          Value: {data.value}
        </Text>
      </View>
    ),
  }}
/>

🎨 Color Schemes

Choose from expanded color schemes including new v1.1.0 additions:

// GitHub style (default)
<Heatmap data={data} colorScheme="github" />

// New in v1.1.0
<Heatmap data={data} colorScheme="gitlab" />
<Heatmap data={data} colorScheme="bitbucket" />
<Heatmap data={data} colorScheme="accessible" />
<Heatmap data={data} colorScheme="sunset" />
<Heatmap data={data} colorScheme="neon" />

// Classic schemes
<Heatmap data={data} colorScheme="heat" />
<Heatmap data={data} colorScheme="cool" />

// Custom color scheme
<Heatmap 
  data={data} 
  colorScheme={{
    name: 'custom',
    colors: ['#ebedf0', '#9be9a8', '#40c463', '#30a14e', '#216e39'],
    emptyColor: '#ebedf0'
  }} 
/>

Available schemes: github, githubDark, gitlab, bitbucket, accessible, sunset, neon, heat, cool, purple, green, orange, red, blue, grayscale

📐 Layouts

Calendar Layout (Default)

Perfect for contribution calendars and date-based visualizations:

<Heatmap
  data={data}
  layout="calendar"
  showMonthLabels={true}
  showWeekdayLabels={true}
  startDate={new Date('2024-01-01')}
  endDate={new Date('2024-12-31')}
/>

Grid Layout

Ideal for non-date based data:

<Heatmap
  data={data}
  layout="grid"
  columns={7}
  rows={5}
/>

Compact Layout

Single row visualization:

<Heatmap
  data={data}
  layout="compact"
/>

🎭 Cell Shapes

Customize the appearance of your heatmap cells:

// Square cells (default)
<Heatmap data={data} cellShape="square" />

// Rounded corners
<Heatmap data={data} cellShape="rounded" />

// Circular cells
<Heatmap data={data} cellShape="circle" />

⚡ Performance Optimization (v1.1.0+)

Handle large datasets efficiently with virtualization:

<Heatmap
  data={largeDataset} // 1000+ items
  virtualized={true}
  renderBuffer={50}
  
  // Performance monitoring
  onPerformanceUpdate={(metrics) => {
    console.log('Render time:', metrics.renderTime);
  }}
/>

🌗 Theming

Create consistent themes across light and dark modes:

<Heatmap
  data={data}
  theme={{
    colors: {
      background: '#0d1117',
      text: '#f0f6fc',
      border: '#30363d',
      tooltip: '#f0f6fc',
      tooltipText: '#0d1117',
    },
    spacing: {
      cell: 3,
      margin: 15,
      padding: 10,
    },
    typography: {
      fontSize: 14,
      fontWeight: 'bold',
      fontFamily: 'System',
    },
  }}
/>

📊 Advanced Configuration

Size and Spacing

<Heatmap
  data={data}
  cellSize={15}
  cellSpacing={3}
  width={350}
  height={200}
/>

Accessibility

<Heatmap
  data={data}
  accessibility={{
    label: "Activity heatmap",
    hint: "Double tap to view details",
    role: "grid",
  }}
/>

📱 Real-World Examples

GitHub Contribution Calendar with v1.1.0 Features

import { Heatmap } from '@dt-workspace/react-native-heatmap';

const GitHubContributions = ({ contributionData }) => {
  const startDate = new Date();
  startDate.setDate(startDate.getDate() - 365);

  return (
    <Heatmap
      data={contributionData}
      startDate={startDate}
      colorScheme="github"
      layout="calendar"
      showMonthLabels={true}
      showWeekdayLabels={true}
      
      // v1.1.0 features
      animated={true}
      animation={{
        entryAnimation: 'scale',
        staggerDelay: 5,
        duration: 200,
      }}
      
      tooltip={{
        enabled: true,
        content: (data) => (
          <View>
            <Text style={{ color: 'white', fontWeight: 'bold' }}>
              {data.date}
            </Text>
            <Text style={{ color: 'white' }}>
              {data.value} contributions
            </Text>
            <Text style={{ color: 'white', fontSize: 12 }}>
              {data.metadata?.commits || 0} commits
            </Text>
          </View>
        ),
      }}
      
      onCellPress={(data) => showContributionDetails(data)}
      onCellLongPress={(data) => showQuickActions(data)}
      hapticFeedback={true}
    />
  );
};

Fitness Activity Tracker

const FitnessHeatmap = ({ workoutData }) => (
  <Heatmap
    data={workoutData}
    colorScheme="sunset"
    cellShape="circle"
    
    // Smooth animations
    animated={true}
    animation={{
      entryAnimation: 'fade',
      duration: 400,
      staggerDelay: 8,
    }}
    
    // Interactive features
    onCellPress={(data) => {
      navigation.navigate('WorkoutDetails', { date: data.date });
    }}
    onCellDoublePress={(data) => {
      quickAddWorkout(data.date);
    }}
    
    hapticFeedback={true}
    theme={{
      colors: {
        background: '#f8f9fa',
        text: '#495057',
      }
    }}
  />
);

🕒 Time-Based Layouts (v1.2.0)

The library now supports 7 different time-based layout types for various data visualization needs:

Daily Layout (24-hour grid)

Perfect for showing hourly activity patterns throughout a day.

import { Heatmap } from '@dt-workspace/react-native-heatmap';

const DailyActivity = ({ hourlyData }) => (
  <Heatmap
    data={hourlyData}
    layout="daily"
    targetDate={new Date('2024-01-15')}
    hourFormat="24h"
    showTimeLabels={true}
    colorScheme="heat"
    cellSize={20}
    cellSpacing={3}
    onCellPress={(data) => {
      console.log('Hour:', data.date, 'Activity:', data.value);
    }}
  />
);

Weekly Layout (7-day activity)

Ideal for weekly activity tracking and habit visualization.

const WeeklyTracker = ({ weeklyData }) => (
  <Heatmap
    data={weeklyData}
    layout="weekly"
    targetDate={new Date('2024-01-15')}
    showTimeLabels={true}
    colorScheme="github"
    cellSize={30}
    cellSpacing={4}
  />
);

Monthly Layout

Perfect for monthly overviews and calendar-style visualizations.

const MonthlyOverview = ({ monthlyData }) => (
  <Heatmap
    data={monthlyData}
    layout="monthly"
    targetDate={new Date('2024-01-01')}
    showTimeLabels={true}
    colorScheme="cool"
    cellSize={15}
    cellSpacing={2}
  />
);

Yearly Layout

Great for showing annual patterns and long-term trends.

const YearlyReport = ({ yearlyData }) => (
  <Heatmap
    data={yearlyData}
    layout="yearly"
    targetDate={new Date('2024-01-01')}
    showTimeLabels={true}
    colorScheme="purple"
    cellSize={8}
    cellSpacing={1}
  />
);

Custom Range Layout

Flexible layout for custom date ranges with configurable granularity.

const CustomRangeView = ({ rangeData }) => (
  <Heatmap
    data={rangeData}
    layout="customRange"
    customRange={{
      start: new Date('2024-01-01'),
      end: new Date('2024-03-31'),
      granularity: 'week' // 'hour' | 'day' | 'week' | 'month'
    }}
    showTimeLabels={true}
    colorScheme="green"
    cellSize={25}
    cellSpacing={3}
  />
);

Timeline Scroll Layout

Horizontal scrollable timeline for large datasets.

const TimelineView = ({ timelineData }) => (
  <Heatmap
    data={timelineData}
    layout="timelineScroll"
    scrollDirection="horizontal"
    showTimeLabels={true}
    colorScheme="blue"
    cellSize={12}
    cellSpacing={2}
  />
);

Real-Time Layout

Live updating layout for real-time data visualization.

const RealTimeMonitor = ({ liveData }) => (
  <Heatmap
    data={liveData}
    layout="realTime"
    updateInterval={1000}
    showTimeLabels={true}
    colorScheme="neon"
    cellSize={15}
    cellSpacing={2}
    animated={true}
  />
);

🎴 CardLayout Component (v1.2.0)

A flexible card-based layout system for composing complex UI components with configurable sections.

Basic CardLayout Usage

import { CardLayout } from '@dt-workspace/react-native-heatmap';

const BasicCard = () => (
  <CardLayout
    title="Analytics Dashboard"
    description="Monthly performance overview"
    customComponent={
      <Heatmap
        data={analyticsData}
        layout="monthly"
        colorScheme="github"
        cellSize={12}
      />
    }
    hitman={
      <View style={{ flexDirection: 'row', justifyContent: 'space-between' }}>
        <Button title="View Details" />
        <Button title="Export" />
      </View>
    }
  />
);

Advanced CardLayout with Badges

const AdvancedCard = () => (
  <CardLayout
    title="Project Activity"
    description="Team collaboration metrics"
    
    // Badges for status indicators
    badgesArray={[
      { text: 'Active', backgroundColor: '#28a745', color: '#fff' },
      { text: 'High Priority', backgroundColor: '#dc3545', color: '#fff' },
      { text: 'Team: 5', backgroundColor: '#6c757d', color: '#fff' }
    ]}
    
    // Custom content area
    customComponent={
      <View>
        <Heatmap
          data={projectData}
          layout="weekly"
          colorScheme="gitlab"
          cellSize={15}
          cellSpacing={2}
        />
        <Text style={{ textAlign: 'center', marginTop: 10 }}>
          Last 7 days activity
        </Text>
      </View>
    }
    
    // Footer actions
    hitman={
      <View style={{ flexDirection: 'row' }}>
        <Button title="Settings" />
        <Button title="Share" />
      </View>
    }
    
    // Configuration
    cardLayout={{
      borderRadius: 12,
      shadow: true,
      backgroundColor: '#f8f9fa'
    }}
    
    // Theme
    theme="light"
    
    // Animations
    animated={true}
    animationType="fade"
    animationDuration={300}
    
    // Interactions
    onPress={() => console.log('Card pressed')}
    onLongPress={() => console.log('Card long pressed')}
  />
);

CardLayout with Custom Sections

const CustomSectionCard = () => (
  <CardLayout
    title="Custom Layout"
    titleSection={{ order: 0, visible: true, padding: 16 }}
    
    description="Sections can be reordered and configured"
    descriptionSection={{ order: 2, visible: true, padding: 12 }}
    
    customComponent={<MyCustomComponent />}
    customComponentSection={{ order: 1, visible: true, padding: 8 }}
    
    hitman={<MyFooterComponent />}
    hitmanSection={{ order: 3, visible: true, padding: 16 }}
    
    // Individual section styling
    titleStyle={{ fontSize: 18, fontWeight: 'bold' }}
    descriptionStyle={{ fontSize: 14, color: '#666' }}
    titleContainerStyle={{ backgroundColor: '#f0f0f0' }}
  />
);

🔧 API Reference

Props

Prop	Type	Default	Description
data	HeatmapData[]	Required	Array of data points with date and value
startDate	Date	Current year start	Start date for the heatmap
endDate	Date	Current year end	End date for the heatmap
colorScheme	string | ColorScheme	'github'	Color scheme name or custom scheme
layout	LayoutType	'calendar'	Layout type ('calendar' | 'grid' | 'compact' | 'daily' | 'weekly' | 'monthly' | 'yearly' | 'customRange' | 'timelineScroll' | 'realTime')
cellSize	number	12	Size of each cell in pixels
cellSpacing	number	2	Spacing between cells
cellShape	'square' | 'rounded' | 'circle'	'square'	Shape of cells
onCellPress	(data, index) => void	undefined	Cell press handler
onCellLongPress	(data, index) => void	undefined	Cell long press handler
New in v1.1.0
onCellDoublePress	(data, index) => void	undefined	Cell double press handler
onCellPressIn	(data, index) => void	undefined	Cell press in handler
onCellPressOut	(data, index) => void	undefined	Cell press out handler
animated	boolean	true	Enable animations
animation	AnimationConfig	undefined	Animation configuration
tooltip	TooltipConfig	undefined	Tooltip configuration
gesture	GestureConfig	undefined	Gesture configuration
hapticFeedback	boolean	false	Enable haptic feedback
virtualized	boolean	false	Enable virtualization for large datasets
theme	Partial<Theme>	DEFAULT_THEME	Theme configuration
showMonthLabels	boolean	true	Show month labels (calendar layout)
showWeekdayLabels	boolean	true	Show weekday labels (calendar layout)
New in v1.2.0
targetDate	Date	undefined	Target date for time-based layouts
hourFormat	'12h' | '24h'	'24h'	Hour format for daily layouts
showTimeLabels	boolean	false	Show time labels for time-based layouts
scrollDirection	'horizontal' | 'vertical'	'horizontal'	Scroll direction for timeline layouts
updateInterval	number	1000	Update interval for real-time layouts (ms)
customRange	CustomRangeConfig	undefined	Custom range configuration

CardLayout Props (v1.2.0)

Prop	Type	Default	Description
title	string | ReactNode	undefined	Card title (string or custom component)
description	string | ReactNode	undefined	Card description (string or custom component)
badges	ReactNode	undefined	Custom badges component
badgesArray	BadgeConfig[]	undefined	Array of badge configurations
customComponent	ReactNode	undefined	Custom content component
hitman	ReactNode	undefined	Footer/action component (always rendered last)
cardLayout	CardLayoutConfig	DEFAULT_CARD_LAYOUT	Card layout configuration
theme	'light' | 'dark' | 'auto'	'light'	Theme mode
themeColors	ThemeColors	undefined	Custom theme colors
animated	boolean	false	Enable animations
animationType	'fade' | 'scale' | 'slide'	'fade'	Animation type
animationDuration	number	300	Animation duration (ms)
onPress	() => void	undefined	Card press handler
onLongPress	() => void	undefined	Card long press handler
accessibilityLabel	string	undefined	Accessibility label
accessibilityRole	string	undefined	Accessibility role
testID	string	undefined	Test identifier

Types

interface HeatmapData {
  date: string; // ISO date string (YYYY-MM-DD)
  value: number;
  metadata?: Record<string, any>;
}

interface AnimationConfig {
  enabled: boolean;
  duration: number;
  easing?: 'linear' | 'ease' | 'ease-in' | 'ease-out' | 'ease-in-out';
  staggerDelay?: number;
  entryAnimation?: 'fade' | 'scale' | 'slide' | 'none';
  useNativeDriver?: boolean;
}

interface TooltipConfig {
  enabled: boolean;
  content?: (data: HeatmapData) => ReactNode;
  position?: 'top' | 'bottom' | 'left' | 'right' | 'auto';
  offset?: number;
  showArrow?: boolean;
  backgroundColor?: string;
  textColor?: string;
  fontSize?: number;
  padding?: number;
  borderRadius?: number;
  shadow?: boolean;
}

interface GestureConfig {
  enabled: boolean;
  pan?: boolean;
  zoom?: boolean;
  swipe?: boolean;
  minZoom?: number;
  maxZoom?: number;
  hapticFeedback?: boolean;
}

interface ColorScheme {
  name: string;
  colors: string[];
  levels?: number;
  emptyColor?: string;
}

interface Theme {
  colors: {
    background: string;
    text: string;
    border: string;
    tooltip: string;
    tooltipText: string;
  };
  spacing: {
    cell: number;
    margin: number;
    padding: number;
  };
  typography: {
    fontSize: number;
    fontWeight: string;
    fontFamily: string;
  };
}

// Time-based layout types (v1.2.0)
type LayoutType = 
  | 'calendar' 
  | 'grid' 
  | 'compact' 
  | 'daily'
  | 'weekly'
  | 'monthly'
  | 'yearly'
  | 'customRange'
  | 'timelineScroll'
  | 'realTime';

interface CustomRangeConfig {
  start: Date;
  end: Date;
  granularity: 'hour' | 'day' | 'week' | 'month';
}

// CardLayout types (v1.2.0)
interface BadgeConfig {
  text: string;
  color?: string;
  backgroundColor?: string;
  size?: 'small' | 'medium' | 'large';
  style?: ViewStyle;
  textStyle?: TextStyle;
}

interface CardLayoutConfig {
  width?: number;
  height?: number;
  backgroundColor?: string;
  borderColor?: string;
  borderWidth?: number;
  borderRadius?: number;
  shadow?: boolean;
  elevation?: number;
  padding?: number;
  margin?: number;
  style?: ViewStyle;
}

interface CardSectionConfig {
  visible?: boolean;
  order?: number;
  style?: ViewStyle;
  padding?: number;
  margin?: number;
}

🛠️ Utilities

The library includes helpful utility functions:

import {
  generateDateRange,
  formatDateISO,
  processHeatmapData,
  COLOR_SCHEMES,
  DEFAULT_THEME,
  DARK_THEME
} from '@dt-workspace/react-native-heatmap';

// Generate date range
const dates = generateDateRange(
  new Date('2024-01-01'),
  new Date('2024-12-31')
);

// Access predefined schemes
console.log(COLOR_SCHEMES.github);
console.log(COLOR_SCHEMES.gitlab); // New in v1.1.0

📈 Migration from v0.1.0 to v1.1.0

v1.1.0 is fully backward compatible. To use new features:

// Before (v0.1.0) - still works
<Heatmap
  data={data}
  colorScheme="github"
  onCellPress={handlePress}
/>

// After (v1.1.0) - enhanced with new features
<Heatmap
  data={data}
  colorScheme="github"
  onCellPress={handlePress}
  
  // New features
  animated={true}
  animation={{ entryAnimation: 'scale', staggerDelay: 10 }}
  tooltip={{ enabled: true, position: 'auto' }}
  onCellDoublePress={handleDoublePress}
  hapticFeedback={true}
/>

🧪 Testing

# Run tests
yarn test

# Run tests with coverage
yarn test --coverage

# Run type checking
yarn typecheck

# Run linting
yarn lint

📱 Example App

Run the example app to see all features in action:

# Install dependencies
yarn

# Run on iOS
yarn example ios

# Run on Android
yarn example android

# Run on Web
yarn example web

🤝 Contributing

We welcome contributions! Please see our Contributing Guide for details.

Development Setup

# Clone the repository
git clone https://github.com/dt-workspace/react-native-heatmap.git

# Install dependencies
yarn

# Start the example app
yarn example ios

📝 Changelog

See version.md for a detailed history of changes.

Recent Updates

• v1.1.0 (2025-01-08): Advanced animations, gestures, tooltips, performance optimizations
• v0.1.0 (2025-01-08): Initial release with core heatmap functionality

🔗 Related Projects

• react-calendar-heatmap - Web version
• react-native-svg - SVG library
• react-native-gesture-handler - Gesture support
• react-native-reanimated - Animation library

📄 License

MIT © Deepak Tiwari

❤️ Support

If this library helps you, please consider:

• ⭐ Starring the repo
• 🐛 Reporting bugs
• 💡 Suggesting new features
• 📝 Contributing code or documentation

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