Font

The Font plugin enables the following features in the editor:

• FontFamily – Allows to change the font family by applying inline <span> elements with a font-family in the style attribute.
• FontSize – Allows to control the font size by applying inline <span> elements that either have a CSS class or a font-size in the style attribute.

# Demo

# Configuring the font family feature

It is possible to configure which font family options are supported by the editor. Use the fontFamily.options configuration option to do so.

Use the special 'default' keyword to use the default font family defined in the web page styles. It removes any custom font family.

For example, the following editor supports only two font families besides the default one:

ClassicEditor
    .create( document.querySelector( '#editor' ), {
        fontFamily: {
            options: [
                'default',
                'Ubuntu, Arial, sans-serif',
                'Ubuntu Mono, Courier New, Courier, monospace'
            ]
        },
        toolbar: [
            'heading', 'bulletedList', 'numberedList', 'fontFamily', 'undo', 'redo'
        ]
    } )
    .then( ... )
    .catch( ... );

# Configuring the font size feature

It is possible to configure which font size options are supported by the editor. Use the fontSize.options configuration option to do so.

Use the special 'default' keyword to use the default font size defined in the web page styles. It removes any custom font size.

The font size feature supports two ways of defining the configuration: using predefined (named) presets or simple numeric values.

# Using the predefined presets

The font size feature defines 4 named presets:

• 'tiny'
• 'small'
• 'big'
• 'huge'

Each size is represented in the view as a <span> element with the text-* class. For example, the 'tiny' preset looks as follows in the editor data:

<span class="text-tiny">...</span>

The CSS definition for the classes (presets) must be included in the web page styles where the edited content is rendered.

Here is an example of the font size CSS classes:

.text-tiny {
    font-size: 0.7em;
}

.text-small {
    font-size: 0.85em;
}

.text-big {
    font-size: 1.4em;
}

.text-huge {
    font-size: 1.8em;
}

An example of the editor that supports only two font sizes:

ClassicEditor
    .create( document.querySelector( '#editor' ), {
        fontSize: {
            options: [
                'tiny',
                'default',
                'big'
            ]
        },
        toolbar: [
            'heading', 'bulletedList', 'numberedList', 'fontSize', 'undo', 'redo'
        ]
    } )
    .then( ... )
    .catch( ... );

# Using numerical values

The font feature also supports numerical values.

In this case, each size is represented in the view as a <span> element with the font-size style set in px.
For example, 14 will be represented in the editor data as:

<span style="font-size: 14px">...</span>

Here is an example of the editor that supports numerical font sizes. Note that 'default' is controlled by the default styles of the web page:

ClassicEditor
    .create( document.querySelector( '#editor' ), {
        fontSize: {
            options: [
                9,
                11,
                13,
                'default',
                17,
                19,
                21
            ]
        },
        toolbar: [
            'heading', 'bulletedList', 'numberedList', 'fontSize', 'undo', 'redo'
        ]
    } )
    .then( ... )
    .catch( ... );

# Installation

To add this feature to your editor, install the @ckeditor/ckeditor5-font package:

npm install --save @ckeditor/ckeditor5-font

Then add it to your plugin list and the toolbar configuration:

import Font from '@ckeditor/ckeditor5-font/src/font';

ClassicEditor
    .create( document.querySelector( '#editor' ), {
        plugins: [ Font, ... ],
        toolbar: [ 'fontSize', 'fontFamily', ... ]
    } )
    .then( ... )
    .catch( ... );

You can also add one of the font features to your plugin list and the toolbar configuration:

import FontFamily from '@ckeditor/ckeditor5-font/src/fontfamily';

ClassicEditor
    .create( document.querySelector( '#editor' ), {
        plugins: [ FontFamily, ... ],
        toolbar: [ 'fontFamily', ... ]
    } )
    .then( ... )
    .catch( ... );

# Common API

The FontFamily plugin registers:

• The 'fontFamily' dropdown,

• The 'fontFamily' command.

  The number of options and their names correspond to the fontFamily.options configuration option.

  You can change the font family of the current selection by executing the command with a desired value:

  editor.execute( 'fontFamily', { value: 'Arial' } );
  

  The value must correspond to the first font name in the configuration string. For the following default configuration:

  fontFamily.options = [
      'default',
      'Arial, Helvetica, sans-serif',
      'Courier New, Courier, monospace',
      'Georgia, serif',
      'Lucida Sans Unicode, Lucida Grande, sans-serif',
      'Tahoma, Geneva, sans-serif',
      'Times New Roman, Times, serif',
      'Trebuchet MS, Helvetica, sans-serif',
      'Verdana, Geneva, sans-serif'
  ]
  

  the 'fontFamily' command will accept the corresponding strings as values:

  • 'Arial'
  • 'Courier New'
  • 'Georgia'
  • 'Lucida Sans Unicode'
  • 'Tahoma'
  • 'Times New Roman'
  • 'Trebuchet MS'
  • 'Verdana'

  Note that passing an empty value will remove the fontFamily attribute from the selection (default):

  editor.execute( 'fontFamily' );
  

The FontSize plugin registers the following components:

• The 'fontSize' dropdown,

• The 'fontSize' command.

  The number of options and their names correspond to the fontSize.options configuration option.

  You can change the font size of the current selection by executing the command with a desired value:

  // For numerical values:
  editor.execute( 'fontSize', { value: 10 } );
  
  // For named presets:
  editor.execute( 'fontSize', { value: 'small' } );
  

  Passing an empty value will remove any fontSize set:

  editor.execute( 'fontSize' );
  

# Contribute

The source code of the feature is available on GitHub in https://github.com/ckeditor/ckeditor5-font.