React Native图像标记

Features

• Add multiple text watermarks to images
• Add multiple icon watermarks to images (Android >= N, iOS >= iOS 13)
• Support rotating background image and icon watermarks.
• Support setting opacity for background image and icon watermarks.
• Support base64 format
• Flexible text style settings, including:
  • Rotating
  • Text shadow
  • Background color
  • Italic
  • Bold
  • Stroke
  • Text align
  • Padding
  • Relative position
  • Background border radius
• Compatible with both Android and iOS

Sample

Usage

Text background

• TextBackgroundType
• TextBackgroundStyle

Text background fit

API

TextBackgroundType.none

Sample

Example

import Marker, { Position, TextBackgroundType } from "react-native-image-marker"
···
const options = {
  // background image
  backgroundImage: {
    src: require('./images/test.jpg'),
    scale: 1,
  },
  watermarkTexts: [{
    text: 'text marker \n multline text',
    positionOptions: {
      position: Position.topLeft,
    },
    style: {
      color: '#ff00ff',
      fontSize: 30,
      fontName: 'Arial',
      shadowStyle: {
        dx: 10,
        dy: 10,
        radius: 10,
        color: '#008F6D',
      },
      textBackgroundStyle: {
        padding: '10% 10%',
        type: TextBackgroundType.none,
        color: '#0FFF00',
      },
    },
  }],
  scale: 1,
  quality: 100,
  filename: 'test',
  saveFormat: ImageFormat.png,
  maxSize: 1000,
};
Marker.markText(options);

Text background stretchX

API

TextBackgroundType.stretchX

Sample

Example

import Marker, { Position, TextBackgroundType } from "react-native-image-marker"
···
const options = {
  // background image
  backgroundImage: {
    src: require('./images/test.jpg'),
    scale: 1,
  },
  watermarkTexts: [{
    text: 'text marker \n multline text',
    positionOptions: {
      position: Position.topLeft,
    },
    style: {
      color: '#FC0700',
      fontSize: 30,
      fontName: 'Arial',
      shadowStyle: {
        dx: 10,
        dy: 10,
        radius: 10,
        color: '#008F6D',
      },
      textBackgroundStyle: {
        padding: '10% 10%',
        type: TextBackgroundType.stretchX,
        color: '#0FFF00',
      },
    },
  }],
  scale: 1,
  quality: 100,
  filename: 'test',
  saveFormat: ImageFormat.png,
  maxSize: 1000,
};
Marker.markText(options);

Text background stretchY

API

TextBackgroundType.stretchY

Sample

Example

import Marker, { Position, TextBackgroundType } from "react-native-image-marker"
···
const options = {
  // background image
  backgroundImage: {
    src: require('./images/test.jpg'),
    scale: 1,
  },
  watermarkTexts: [{
    text: 'text marker \n multline text',
    positionOptions: {
      position: Position.topLeft,
    },
    style: {
      color: '#FC0700',
      fontSize: 30,
      fontName: 'Arial',
      shadowStyle: {
        dx: 10,
        dy: 10,
        radius: 10,
        color: '#008F6D',
      },
      textBackgroundStyle: {
        padding: '10% 10%',
        type: TextBackgroundType.stretchY,
        color: '#0FFF00',
      },
    },
  }],
  scale: 1,
  quality: 100,
  filename: 'test',
  saveFormat: ImageFormat.png,
  maxSize: 1000,
};
ImageMarker.markText(options);

Text background border radius

API

TextBackgroundType.cornerRadius

Sample

Example

import Marker, { Position } from "react-native-image-marker"
···
const options = {
  // background image
  backgroundImage: {
    src: require('./images/test.jpg'),
    scale: 1,
  },
  watermarkTexts: [{
    text: 'text marker normal',
    positionOptions: {
      position: Position.center,
    },
    style: {
      color: '#FC0700',
      fontSize: 30,
      fontName: 'Arial',
      shadowStyle: {
        dx: 10,
        dy: 10,
        radius: 10,
        color: '#008F6D',
      },
      textBackgroundStyle: {
        padding: '10%',
        color: '#0fA',
        cornerRadius: {
          topLeft: {
            x: '20%',
            y: '50%',
          },
          topRight: {
            x: '20%',
            y: '50%',
          },
        },
      },
    },
  }],
  scale: 1,
  quality: 100,
  filename: 'test',
  saveFormat: ImageFormat.png,
  maxSize: 1000,
};
ImageMarker.markText(options);

Text with shadow

API

ShadowLayerStyle

Sample

Example

import Marker, { Position, TextBackgroundType } from "react-native-image-marker"
···
const options = {
  // background image
  backgroundImage: {
    src: require('./images/test.jpg'),
    scale: 1,
  },
  watermarkTexts: [{
    text: 'text marker \n multline text',
    positionOptions: {
      position: Position.topLeft,
    },
    style: {
      color: '#F4F50A',
      fontSize: 30,
      fontName: 'Arial',
      shadowStyle: {
        dx: 10,
        dy: 10,
        radius: 10,
        color: '#6450B0',
      },
    },
  }],
  scale: 1,
  quality: 100,
  filename: 'test',
  saveFormat: ImageFormat.png,
  maxSize: 1000,
};
Marker.markText(options);

Multiple text watermarks

API

markImage

Sample

Example

import Marker, { Position, TextBackgroundType } from "react-native-image-marker"
···
Marker.markText({
  backgroundImage: {
    src: require('./images/test.jpg'),
    scale: 1,
  },
  waterMarkTexts: [{
    text: 'hello world \n 你好',
    positionOptions: {
      position: Position.topLeft,
    },
    style: {
      color: '#BB3B20',
      fontSize: 30,
      fontName: 'Arial',
      textBackgroundStyle: {
        padding: '10% 10%',
        color: '#0FFF00',
      },
    },
  }, {
    text: 'text marker normal',
    positionOptions: {
      position: Position.topRight,
    },
    style: {
      color: '#6450B0',
      fontSize: 30,
      fontName: 'Arial',
      textBackgroundStyle: {
        padding: '10% 10%',
        color: '#02FBBE',
      },
    },
  }],
})

Text rotation

Sample

Example

import Marker, { Position, TextBackgroundType } from "react-native-image-marker"
···
Marker.markText({
  backgroundImage: {
    src: require('./images/test.jpg'),
    scale: 1,
    rotate: 30,
  },
  waterMarkTexts: [{
    text: 'hello world \n 你好',
    positionOptions: {
      position: Position.topLeft,
    },
    style: {
      color: '#FFFF00',
      fontSize: 30,
      fontName: 'Arial',
      rotate: 30,
      textBackgroundStyle: {
        padding: '10% 10%',
        color: '#02B96B',
      },
      strikeThrough: true,
      underline: true,
    },
  }, {
    text: 'text marker normal',
    positionOptions: {
      position: Position.center,
    },
    style: {
      color: '#FFFF00',
      fontSize: 30,
      fontName: 'Arial',
      rotate: 30,
      textBackgroundStyle: {
        padding: '10% 10%',
        color: '#0FFF00',
      },
      strikeThrough: true,
      underline: true,
    },
  }],
})

Icon watermarks

Sample

Example

import Marker, { Position, TextBackgroundType } from "react-native-image-marker"
···
Marker.markImage({
  backgroundImage: {
    src: require('./images/test.jpg'),
    scale: 1,
  },
  watermarkImages: [{
    src: require('./images/watermark.png'),
    position: {
      position: Position.topLeft,
    },
  }],
})

Multiple icon watermarks

Note: require Android >= N, iOS >= iOS 13

Sample

Example

import Marker, { Position, TextBackgroundType } from "react-native-image-marker"
···
Marker.markImage({
  backgroundImage: {
    src: require('./images/test.jpg'),
    scale: 1,
  },
  watermarkImages: [{
    src: require('./images/watermark.png'),
    position: {
      position: Position.topLeft,
    },
  }, {
    src: require('./images/watermark1.png'),
    position: {
      position: Position.topRight,
    },
  }, {
    src: require('./images/watermark2.png'),
    position: {
      position: Position.bottomCenter,
    },
  }],
})

Background rotation

Sample

Example

import Marker, { Position, TextBackgroundType } from "react-native-image-marker"
···
Marker.markImage({
  backgroundImage: {
    src: require('./images/test.jpg'),
    scale: 1,
    rotate: 30,
  },
  watermarkImages: [{
    src: require('./images/watermark.png'),
    position: {
      position: Position.topLeft,
    },
  }],
});

Marker.markText({
  backgroundImage: {
    src: require('./images/test.jpg'),
    scale: 1,
    rotate: 30,
  },
  watermarkTexts: [{
    text: 'hello world \n 你好',
    positionOptions: {
      position: Position.topLeft,
    },
    style: {
      color: '#FFFF00',
      fontSize: 30,
      fontName: 'Arial',
      rotate: 30,
      textBackgroundStyle: {
        padding: '10% 10%',
        color: '#02B96B',
      },
      shadowStyle: {
        dx: 10,
        dy: 10,
        radius: 10,
        color: '#008F6D',
      },
      strikeThrough: true,
      underline: true,
    },
  }, {
    text: 'hello world \n 你好',
    positionOptions: {
      position: Position.center,
    },
    style: {
      color: '#FFFF00',
      fontSize: 30,
      fontName: 'Arial',
      textBackgroundStyle: {
        padding: '10% 10%',
        color: '#0FFF00',
      },
      strikeThrough: true,
      underline: true,
    },
  }],
})

Icon rotation

Sample

Example

import Marker, { Position, TextBackgroundType } from "react-native-image-marker"
···
Marker.markImage({
  backgroundImage: {
    src: require('./images/test.jpg'),
    scale: 1,
  },
  watermarkImages: [{
    src: require('./images/watermark.png'),
    position: {
      position: Position.topLeft,
    },
    rotate: 30,
  }],
});

Transparent background

Sample

Example

import Marker, { Position, TextBackgroundType } from "react-native-image-marker"
···
Marker.markImage({
  backgroundImage: {
    src: require('./images/test.jpg'),
    scale: 1,
    alpha: 0.5,
  },
  watermarkImages: [{
    src: require('./images/watermark.png'),
    position: {
      position: Position.topLeft,
    },
  }],
});

Transparent icon

Sample

Example

import Marker, { Position, TextBackgroundType } from "react-native-image-marker"
···
Marker.markImage({
  backgroundImage: {
    src: require('./images/test.jpg'),
    scale: 1,
  },
  watermarkImages: [{
    src: require('./images/watermark.png'),
    position: {
      position: Position.topLeft,
    },
    alpha: 0.5,
  }],
});

Compatibility

Note: This table is only applicable to major versions of react-native-image-marker. Patch versions should be backwards compatible.

Installation

• npm install react-native-image-marker --save
• link
  • react-native link (RN version < 0.60.0)
  • auto link(RN version > 0.60.0)

RN version < 0.60.0 please use v0.5.2 or older

iOS Pod Install (RN version < 0.60.0)

You can use pod instead of link. Add following lines in your Podfile:

pod 'RNImageMarker', :path => '../node_modules/react-native-image-marker'

API

• the latest version
• v1.0.x
• If you are using a version lower than 1.0.0, please go to v0.9.2

Extra about Android decoding image

This library use Fresco to decode image on Android. You can set your configuration through Configure Fresco in React Native

• RN version < 0.60.0 use fresco v1.10.0
• RN version >= 0.60.0 use fresco v2.0.0 +

ref

Save image to file

• If you want to save the new image result to the phone camera roll, just use the CameraRoll-module from react-native.
• If you want to save it to an arbitrary file path, use something like react-native-fs.
• For any more advanced needs, you can write your own (or find another) native module that would solve your use-case.

Contributors

@filipef101
@mikaello
@Peretz30
@gaoxiaosong
@onka13
@OrangeFlavoredColdCoffee

Examples

examples

If you want to run the example locally, you can do the following:

git clone git@github.com:JimmyDaddy/react-native-image-marker.git

cd ./react-native-image-marker

# Android
# Open an android emulator or connect a real device at first
yarn example android

# iOS
yarn example ios

Contributing

See the contributing guide to learn how to contribute to the repository and the development workflow.

License

MIT

Made with create-react-native-library