cronshot-imagemagick

0.1.0 • Public • Published

cronshot-imagemagick

CronShot middleware to manipulate and save images with ImageMagick via gm

npm install cronshot-imagemagick

How

CronShot uses:

Setup

Install CronShot

npm install cronshot

Install ImageMagick

brew update && brew install imagemagick

Example

var cronshot = require('cronshot'),
  middleware = {
    'imagemagick': require('cronshot-imagemagick')
  };
 
// Image Magick Example
// --------------------
 
// Takes a screenshot of sports.yahoo.com,
// and converts the screenshot to be a transparent image using Image Magick
 
// Image Magick example
cronshot.startCapturing({
  // The webpage URL that you would like to take a screenshot of
  'url': 'http://sports.yahoo.com',
  // The local path where you would like to save the image
  'path': __dirname,
  // Only takes one screenshot
  'cronPattern': false,
  // What middleware functions to use each time a screenshot is taken
  'saveMiddleware': [{
    // Function that does all the Image Magick stuff
    'middleware': middleware.imagemagick,
    'options': {
      'gmCommands': [{
        'method': 'trim',
        'args': []
      }, {
        'method': 'transparent',
        'args': ['#FFFFFF']
      }]
    }
  }]
}, function(err) {
  // optional callback function once all screenshots have been taken
});

Options

Note: All methods supported by gm can be used

{
  // The path where the screenshot will be saved
  'path': '',
  // The image name used to save the screenshot
  'imageName': '',
  // The ImageMagick methods that you would like to be used via the gm node module
  'gmCommands': []
}

Contributing

Please send all PR's to the dev branch.

If your PR is a code change:

  1. Install all node.js dev dependencies: npm install
  2. Update the appropriate module inside of the src/modules directory.
  3. Add a unit test inside of tests/unit/cronshot-imagemagick.js.
  4. Verify that all tests are passing by running npm test.
  5. Send the PR!

Credits

CronShot-ImageMagick would not have been possible without the help/inspiration of the following libraries/awesome people:

  • GraphicsMagick for node
  • Copyright (c) Aaron Heckmann, 2010 - MIT License

Contributors

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Install

npm i cronshot-imagemagick

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Version

0.1.0

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Collaborators

  • gfranko
  • davglass