ImageItem
| Method | Description | Options | Example |
|---|---|---|---|
| mime_type | Get the mime type for the image | item.mine_type | |
| bytes | Get the bytes that comprise the image data | item.bytes | |
| update | Update the image with with a base 64 encoded image data | item.update "data:image/png;base64,iVBO..." | |
| update_from_bytes | Update the image from a byte array, mime_type will be automatically detected unless specified | mime_type | item.update_from_bytes [0,23,45]... |
| update_from_file | Update the image from a file, mime_type will be automatically detected unless specified | mime_type | item.update_from_file '/tmp/foo.png' |
| update_from_url | Update the image from a url | item.update_from_url 'https://www.foobar.com/baz.png' |
Examples
Update from a base 64 encode image string
Image.update "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAACnej3aAAAAAXRSTlMAQObYZgAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII="
Update from image bytes and mime type
Image.update_from_bytes IO.binread(File.join(Dir.tmpdir,'1x1.png')), mime\_type: 'image/png'
Update from URL
Image.update_from_url 'https://raw.githubusercontent.com/boc-tothefuture/openhab-jruby/main/features/assets/1x1.png'
Update from File
Image.update_from_file '/tmp/1x1.png'
Log image data
logger.info("Mime type: #{Image.mime\_type}")
logger.info("Number of bytes: #{Image.bytes.length}")