CKEditor Ecosystem Documentation
Search
CKEditor 4 reached its End of Life (EOL) in June 2023. From then on, it will receive no more updates, new features, bug fixes, and security patches. Visit CKEditor 5 Docs for the actively supported CKEditor or check Extended Support Model.
Report an issue
Home/CKEditor 4/API
Class

CKEDITOR.plugins.pastetools.filters.image

class

Filtering

Properties

  • since 4.16.0 private

    recognizableImageSignatures : RecognizableImageSignature[]

    See source

    Recognizable image file signatures with their respective types.

    The recognizing of image type is done by matching the first bytes of the signature represented as hex string.

    Defaults to [{signature: 'ffd8ff', type: 'image/jpeg'}, {signature: '47494638', type: 'image/gif'}, {signature: '89504e47', type: 'image/png'}]

  • since 4.16.0 private

    recognizableImageTypes : RecognizableImageType[]

    See source

    Recognizable image types with their respective markers.

    The recognizing of image type is done by searching for image marker inside the RTF image content.

    Defaults to [{marker: /\\pngblip/, type: 'image/png'}, {marker: /\\jpegblip/, type: 'image/jpeg'}, {marker: /\\emfblip/, type: 'image/emf'}, {marker: /\\wmetafile\d/, type: 'image/wmf'}]

  • since 4.16.0 private

    supportedImageTypes : String[]

    See source

    Array of all supported image formats.

    Defaults to ['image/png', 'image/jpeg', 'image/gif']

Methods

  • since 4.16.0 private

    convertBlobUrlToBase64( blobUrlSrc ) → String | null>

    See source

    Converts blob url into base64 string. Conversion is happening asynchronously. Currently supported file types: image/png, image/jpeg, image/gif.

    Parameters

    blobUrlSrc : String

    Address of blob which is going to be converted

    Returns

    String | null>

    Promise, which resolves to Data URL representing image. If image's type is unsupported, promise resolves to null.

  • since 4.16.0 private

    createSrcWithBase64( img ) → String

    See source

    Creates image source as Base64-encoded Data URL.

    Parameters

    img : ImageData

    Image data.

    Returns

    String

    Data URL representing the image.

  • since 4.16.0 private

    extractFromRtf( rtfContent ) → ImageData[]

    See source

    Parses RTF content to find embedded images.

    Parameters

    rtfContent : String

    RTF content to be checked for images.

    Returns

    ImageData[]

    An array of images found in the rtfContent.

  • since 4.16.0 private

    extractTagsFromHtml( html ) → String[]

    See source

    Extracts an array of src`` attributes intags from the given HTML.` tags belonging to VML shapes are removed.

    CKEDITOR.plugins.pastefromword.images.extractTagsFromHtml( html );
// Returns: [ 'http://example-picture.com/random.png', 'http://example-picture.com/another.png' ]

    Parameters

    html : String

    A string representing HTML code.

    Returns

    String[]

    An array of strings representing the src attribute of the <img> tags found in html.

  • since 4.16.0 private

    getImageType( imageContent ) → String

    See source

    Extract image type from its RTF content

    Parameters

    imageContent : String

    Image content as RTF string.

    Returns

    String

    If the image type can be extracted, it is returned in image/* format. Otherwise, 'unknown' is returned.

  • since 4.16.0 private

    getImageTypeFromSignature( bytesArray ) → String | null

    See source

    Return file type based on first 4 bytes of given file. Currently recognised file types: image/png, image/jpeg, image/gif.

    Parameters

    bytesArray : Uint8Array

    Typed array which will be analysed to obtain file type.

    Returns

    String | null

    File type recognized from given typed array or null.