wp-includes/block-editor.php:809Returns the classic theme supports settings for block editor.
arrayfunction get_classic_theme_supports_block_editor_settings() { $theme_settings = array( 'disableCustomColors' => get_theme_support( 'disable-custom-colors' ), 'disableCustomFontSizes' => get_theme_support( 'disable-custom-font-sizes' ), 'disableCustomGradients' => get_theme_support( 'disable-custom-gradients' ), 'disableLayoutStyles' => get_theme_support( 'disable-layout-styles' ), 'enableCustomLineHeight' => get_theme_support( 'custom-line-height' ), 'enableCustomSpacing' => get_theme_support( 'custom-spacing' ), 'enableCustomUnits' => get_theme_support( 'custom-units' ), ); // Theme settings. $color_palette = current( (array) get_theme_support( 'editor-color-palette' ) ); if ( false !== $color_palette ) { $theme_settings['colors'] = $color_palette; } $font_sizes = current( (array) get_theme_support( 'editor-font-sizes' ) ); if ( false !== $font_sizes ) { $theme_settings['fontSizes'] = $font_sizes; } $gradient_presets = current( (array) get_theme_support( 'editor-gradient-presets' ) ); if ( false !== $gradient_presets ) { $theme_settings['gradients'] = $gradient_presets; } $spacing_sizes = current( (array) get_theme_support( 'editor-spacing-sizes' ) ); if ( false !== $spacing_sizes ) { $theme_settings['spacingSizes'] = $spacing_sizes; } return $theme_settings;}Introduced in 6.2.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/block-editor.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.