Enforce Brand Guidelines - Svelte

Learn how to restrict users to approved brand assets—specific colors, fonts, and images—while preventing unauthorized modifications to brand elements like logos and legal text.

Brand guidelines enforcement showing locked logo and editable content with custom color palette

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Brand guidelines enforcement in CE.SDK combines two complementary approaches: restricting which assets users can access (colors, fonts, images) and controlling what editing operations are permitted on brand elements. Asset restrictions work through custom asset sources that replace default libraries, while editing constraints use the scopes system to lock specific elements.

import type { EditorPlugin, EditorPluginContext } from '@cesdk/cesdk-js';
import packageJson from './package.json';

/**
 * CE.SDK Plugin: Enforce Brand Guidelines Guide
 *
 * Demonstrates how to restrict users to approved brand assets and prevent
 * unauthorized modifications to brand elements using asset restrictions
 * and the scopes system.
 */
class Example implements EditorPlugin {
  name = packageJson.name;
  version = packageJson.version;

  async initialize({ cesdk }: EditorPluginContext): Promise<void> {
    if (!cesdk) {
      throw new Error('CE.SDK instance is required for this plugin');
    }

    // Set up internationalized names for custom asset libraries
    cesdk.i18n.setTranslations({
      en: {
        'libraries.brandColors.label': 'Brand Colors',
        'libraries.brandFonts.label': 'Brand Fonts'
      }
    });

    await cesdk.addDefaultAssetSources();
    await cesdk.addDemoAssetSources({
      sceneMode: 'Design',
      withUploadAssetSources: true
    });
    await cesdk.createDesignScene();

    const engine = cesdk.engine;
    const page = engine.block.findByType('page')[0];

    engine.block.setWidth(page, 1200);
    engine.block.setHeight(page, 800);

    // Create brand color source with approved colors only
    engine.asset.addLocalSource('brandColors');

    engine.asset.addAssetToSource('brandColors', {
      id: 'brand-primary',
      label: { en: 'Brand Blue' },
      payload: {
        color: { colorSpace: 'sRGB', r: 0.2, g: 0.4, b: 0.8 }
      }
    });

    engine.asset.addAssetToSource('brandColors', {
      id: 'brand-secondary',
      label: { en: 'Brand Orange' },
      payload: {
        color: { colorSpace: 'sRGB', r: 1.0, g: 0.6, b: 0.0 }
      }
    });

    engine.asset.addAssetToSource('brandColors', {
      id: 'brand-neutral-dark',
      label: { en: 'Dark Gray' },
      payload: {
        color: { colorSpace: 'sRGB', r: 0.2, g: 0.2, b: 0.2 }
      }
    });

    engine.asset.addAssetToSource('brandColors', {
      id: 'brand-neutral-light',
      label: { en: 'Light Gray' },
      payload: {
        color: { colorSpace: 'sRGB', r: 0.9, g: 0.9, b: 0.9 }
      }
    });

    engine.asset.addAssetToSource('brandColors', {
      id: 'brand-white',
      label: { en: 'White' },
      payload: {
        color: { colorSpace: 'sRGB', r: 1.0, g: 1.0, b: 1.0 }
      }
    });

    // Replace default color palette with brand colors only
    cesdk.ui.updateAssetLibraryEntry('ly.img.colors', {
      sourceIds: ['brandColors']
    });

    // Create brand font source with approved typefaces
    engine.asset.addLocalSource('brandFonts');

    engine.asset.addAssetToSource('brandFonts', {
      id: 'brand-heading-font',
      label: { en: 'Montserrat' },
      payload: {
        typeface: {
          name: 'Montserrat',
          fonts: [
            {
              uri: 'https://cdn.img.ly/assets/v2/ly.img.typeface/fonts/Montserrat/Montserrat-Regular.ttf',
              subFamily: 'Regular',
              weight: 'normal',
              style: 'normal'
            },
            {
              uri: 'https://cdn.img.ly/assets/v2/ly.img.typeface/fonts/Montserrat/Montserrat-Bold.ttf',
              subFamily: 'Bold',
              weight: 'bold',
              style: 'normal'
            }
          ]
        }
      }
    });

    engine.asset.addAssetToSource('brandFonts', {
      id: 'brand-body-font',
      label: { en: 'Open Sans' },
      payload: {
        typeface: {
          name: 'Open Sans',
          fonts: [
            {
              uri: 'https://cdn.img.ly/assets/v2/ly.img.typeface/fonts/OpenSans/OpenSans-Regular.ttf',
              subFamily: 'Regular',
              weight: 'normal',
              style: 'normal'
            },
            {
              uri: 'https://cdn.img.ly/assets/v2/ly.img.typeface/fonts/OpenSans/OpenSans-Bold.ttf',
              subFamily: 'Bold',
              weight: 'bold',
              style: 'normal'
            }
          ]
        }
      }
    });

    // Replace default font library with brand fonts only
    cesdk.ui.updateAssetLibraryEntry('ly.img.typefaces', {
      sourceIds: ['brandFonts']
    });

    // Set global scopes to Defer for block-level control
    engine.editor.setGlobalScope('layer/move', 'Defer');
    engine.editor.setGlobalScope('layer/resize', 'Defer');
    engine.editor.setGlobalScope('fill/change', 'Defer');
    engine.editor.setGlobalScope('fill/changeType', 'Defer');
    engine.editor.setGlobalScope('lifecycle/destroy', 'Defer');
    engine.editor.setGlobalScope('lifecycle/duplicate', 'Defer');
    engine.editor.setGlobalScope('text/edit', 'Defer');

    const pageWidth = engine.block.getWidth(page);
    const pageHeight = engine.block.getHeight(page);

    // Create a locked logo block that cannot be modified
    const logoBlock = engine.block.create('graphic');
    const logoShape = engine.block.createShape('rect');
    engine.block.setShape(logoBlock, logoShape);
    engine.block.setWidth(logoBlock, 200);
    engine.block.setHeight(logoBlock, 80);
    engine.block.setPositionX(logoBlock, 40);
    engine.block.setPositionY(logoBlock, 40);

    const logoFill = engine.block.createFill('color');
    engine.block.setColor(logoFill, 'fill/color/value', {
      r: 0.2,
      g: 0.4,
      b: 0.8,
      a: 1.0
    });
    engine.block.setFill(logoBlock, logoFill);
    engine.block.setName(logoBlock, 'Company Logo');
    engine.block.appendChild(page, logoBlock);

    // Lock all editing capabilities on the logo
    engine.block.setScopeEnabled(logoBlock, 'layer/move', false);
    engine.block.setScopeEnabled(logoBlock, 'layer/resize', false);
    engine.block.setScopeEnabled(logoBlock, 'fill/change', false);
    engine.block.setScopeEnabled(logoBlock, 'fill/changeType', false);
    engine.block.setScopeEnabled(logoBlock, 'lifecycle/destroy', false);
    engine.block.setScopeEnabled(logoBlock, 'lifecycle/duplicate', false);

    // Create locked legal text
    const legalText = engine.block.create('text');
    engine.block.setWidth(legalText, pageWidth - 80);
    engine.block.setHeight(legalText, 30);
    engine.block.setPositionX(legalText, 40);
    engine.block.setPositionY(legalText, pageHeight - 50);
    engine.block.replaceText(
      legalText,
      '\u00A9 2024 Company Name. All rights reserved.'
    );
    engine.block.setFloat(legalText, 'text/fontSize', 36);
    engine.block.setName(legalText, 'Legal Text');
    engine.block.appendChild(page, legalText);

    // Lock the legal text
    engine.block.setScopeEnabled(legalText, 'layer/move', false);
    engine.block.setScopeEnabled(legalText, 'layer/resize', false);
    engine.block.setScopeEnabled(legalText, 'text/edit', false);
    engine.block.setScopeEnabled(legalText, 'lifecycle/destroy', false);

    // Create an editable content area where users can work with brand assets
    const contentBlock = engine.block.create('graphic');
    const contentShape = engine.block.createShape('rect');
    engine.block.setShape(contentBlock, contentShape);
    engine.block.setWidth(contentBlock, 400);
    engine.block.setHeight(contentBlock, 300);
    engine.block.setPositionX(contentBlock, (pageWidth - 400) / 2);
    engine.block.setPositionY(contentBlock, (pageHeight - 300) / 2);

    const contentFill = engine.block.createFill('color');
    engine.block.setColor(contentFill, 'fill/color/value', {
      r: 1.0,
      g: 0.6,
      b: 0.0,
      a: 1.0
    });
    engine.block.setFill(contentBlock, contentFill);
    engine.block.setName(contentBlock, 'Editable Content');
    engine.block.appendChild(page, contentBlock);

    // Enable all editing for the editable content block
    engine.block.setScopeEnabled(contentBlock, 'layer/move', true);
    engine.block.setScopeEnabled(contentBlock, 'layer/resize', true);
    engine.block.setScopeEnabled(contentBlock, 'fill/change', true);
    engine.block.setScopeEnabled(contentBlock, 'fill/changeType', true);
    engine.block.setScopeEnabled(contentBlock, 'lifecycle/destroy', true);
    engine.block.setScopeEnabled(contentBlock, 'lifecycle/duplicate', true);

    // Create editable text that uses brand fonts
    const editableText = engine.block.create('text');
    engine.block.setWidth(editableText, 300);
    engine.block.setHeight(editableText, 60);
    engine.block.setPositionX(editableText, (pageWidth - 300) / 2);
    engine.block.setPositionY(editableText, 150);
    engine.block.replaceText(editableText, 'Edit This Headline');
    engine.block.setFloat(editableText, 'text/fontSize', 64);
    engine.block.setEnum(editableText, 'text/horizontalAlignment', 'Center');
    engine.block.setName(editableText, 'Editable Headline');
    engine.block.appendChild(page, editableText);

    // Enable text editing with brand font restrictions
    engine.block.setScopeEnabled(editableText, 'layer/move', true);
    engine.block.setScopeEnabled(editableText, 'layer/resize', true);
    engine.block.setScopeEnabled(editableText, 'text/edit', true);
    engine.block.setScopeEnabled(editableText, 'lifecycle/destroy', true);

    // Validate brand compliance
    const isLogoLocked = !engine.block.isAllowedByScope(
      logoBlock,
      'layer/move'
    );
    const isLegalLocked = !engine.block.isAllowedByScope(
      legalText,
      'text/edit'
    );
    const isContentEditable = engine.block.isAllowedByScope(
      contentBlock,
      'fill/change'
    );

    console.log(`Logo is locked: ${isLogoLocked}`);
    console.log(`Legal text is locked: ${isLegalLocked}`);
    console.log(`Content block is editable: ${isContentEditable}`);

    // Select the editable content block and zoom to page
    engine.block.select(contentBlock);
    await engine.scene.zoomToBlock(page, {
      padding: { left: 40, top: 40, right: 40, bottom: 40 }
    });

    // Open fill panel to show brand color restriction
    cesdk.ui.openPanel('//ly.img.panel/inspector/fill');
  }
}

export default Example;

Restricting Colors to Brand Palette#

Create a custom color library containing only approved brand colors and replace the default palette in the UI.

Creating Brand Color Sources#

Use engine.asset.addLocalSource() to create a custom asset source, then add color assets with engine.asset.addAssetToSource():

// Create brand color source with approved colors only
engine.asset.addLocalSource('brandColors');

engine.asset.addAssetToSource('brandColors', {
  id: 'brand-primary',
  label: { en: 'Brand Blue' },
  payload: {
    color: { colorSpace: 'sRGB', r: 0.2, g: 0.4, b: 0.8 }
  }
});

engine.asset.addAssetToSource('brandColors', {
  id: 'brand-secondary',
  label: { en: 'Brand Orange' },
  payload: {
    color: { colorSpace: 'sRGB', r: 1.0, g: 0.6, b: 0.0 }
  }
});

engine.asset.addAssetToSource('brandColors', {
  id: 'brand-neutral-dark',
  label: { en: 'Dark Gray' },
  payload: {
    color: { colorSpace: 'sRGB', r: 0.2, g: 0.2, b: 0.2 }
  }
});

engine.asset.addAssetToSource('brandColors', {
  id: 'brand-neutral-light',
  label: { en: 'Light Gray' },
  payload: {
    color: { colorSpace: 'sRGB', r: 0.9, g: 0.9, b: 0.9 }
  }
});

engine.asset.addAssetToSource('brandColors', {
  id: 'brand-white',
  label: { en: 'White' },
  payload: {
    color: { colorSpace: 'sRGB', r: 1.0, g: 1.0, b: 1.0 }
  }
});

Each color asset specifies an id, optional label for display, and a payload containing the color definition. Colors use the sRGB color space with r, g, b values from 0 to 1.

Replacing the Default Color Palette#

Configure the color library to display only brand colors using cesdk.ui.updateAssetLibraryEntry():

// Replace default color palette with brand colors only
cesdk.ui.updateAssetLibraryEntry('ly.img.colors', {
  sourceIds: ['brandColors']
});

By omitting the default color palette source ID (ly.img.colors.defaultPalette), users can only select from your approved brand colors.

Restricting Fonts to Brand Typefaces#

Limit font selection to brand-approved typefaces by creating a custom font asset source.

Creating Brand Font Sources#

// Create brand font source with approved typefaces
engine.asset.addLocalSource('brandFonts');

engine.asset.addAssetToSource('brandFonts', {
  id: 'brand-heading-font',
  label: { en: 'Montserrat' },
  payload: {
    typeface: {
      name: 'Montserrat',
      fonts: [
        {
          uri: 'https://cdn.img.ly/assets/v2/ly.img.typeface/fonts/Montserrat/Montserrat-Regular.ttf',
          subFamily: 'Regular',
          weight: 'normal',
          style: 'normal'
        },
        {
          uri: 'https://cdn.img.ly/assets/v2/ly.img.typeface/fonts/Montserrat/Montserrat-Bold.ttf',
          subFamily: 'Bold',
          weight: 'bold',
          style: 'normal'
        }
      ]
    }
  }
});

engine.asset.addAssetToSource('brandFonts', {
  id: 'brand-body-font',
  label: { en: 'Open Sans' },
  payload: {
    typeface: {
      name: 'Open Sans',
      fonts: [
        {
          uri: 'https://cdn.img.ly/assets/v2/ly.img.typeface/fonts/OpenSans/OpenSans-Regular.ttf',
          subFamily: 'Regular',
          weight: 'normal',
          style: 'normal'
        },
        {
          uri: 'https://cdn.img.ly/assets/v2/ly.img.typeface/fonts/OpenSans/OpenSans-Bold.ttf',
          subFamily: 'Bold',
          weight: 'bold',
          style: 'normal'
        }
      ]
    }
  }
});

Each font in the typeface array specifies a uri pointing to the font file, plus weight and style properties.

Replacing the Default Font Library#

Configure the font library to show only brand fonts:

// Replace default font library with brand fonts only
cesdk.ui.updateAssetLibraryEntry('ly.img.typefaces', {
  sourceIds: ['brandFonts']
});

Locking Brand Elements#

Protect brand assets like logos and legal text from modification using the scopes system.

Setting Global Scopes to Defer#

First, set global scopes to 'Defer' to enable block-level control:

// Set global scopes to Defer for block-level control
engine.editor.setGlobalScope('layer/move', 'Defer');
engine.editor.setGlobalScope('layer/resize', 'Defer');
engine.editor.setGlobalScope('fill/change', 'Defer');
engine.editor.setGlobalScope('fill/changeType', 'Defer');
engine.editor.setGlobalScope('lifecycle/destroy', 'Defer');
engine.editor.setGlobalScope('lifecycle/duplicate', 'Defer');
engine.editor.setGlobalScope('text/edit', 'Defer');

Creating and Locking a Logo#

Create a brand element and disable all relevant scopes to lock it:

// Create a locked logo block that cannot be modified
const logoBlock = engine.block.create('graphic');
const logoShape = engine.block.createShape('rect');
engine.block.setShape(logoBlock, logoShape);
engine.block.setWidth(logoBlock, 200);
engine.block.setHeight(logoBlock, 80);
engine.block.setPositionX(logoBlock, 40);
engine.block.setPositionY(logoBlock, 40);

const logoFill = engine.block.createFill('color');
engine.block.setColor(logoFill, 'fill/color/value', {
  r: 0.2,
  g: 0.4,
  b: 0.8,
  a: 1.0
});
engine.block.setFill(logoBlock, logoFill);
engine.block.setName(logoBlock, 'Company Logo');
engine.block.appendChild(page, logoBlock);

Lock the logo by disabling editing scopes:

// Lock all editing capabilities on the logo
engine.block.setScopeEnabled(logoBlock, 'layer/move', false);
engine.block.setScopeEnabled(logoBlock, 'layer/resize', false);
engine.block.setScopeEnabled(logoBlock, 'fill/change', false);
engine.block.setScopeEnabled(logoBlock, 'fill/changeType', false);
engine.block.setScopeEnabled(logoBlock, 'lifecycle/destroy', false);
engine.block.setScopeEnabled(logoBlock, 'lifecycle/duplicate', false);

With these scopes disabled, the logo cannot be moved, resized, recolored, or deleted.

Locking Legal Text#

Similarly, protect legal text from modification:

// Create locked legal text
const legalText = engine.block.create('text');
engine.block.setWidth(legalText, pageWidth - 80);
engine.block.setHeight(legalText, 30);
engine.block.setPositionX(legalText, 40);
engine.block.setPositionY(legalText, pageHeight - 50);
engine.block.replaceText(
  legalText,
  '\u00A9 2024 Company Name. All rights reserved.'
);
engine.block.setFloat(legalText, 'text/fontSize', 36);
engine.block.setName(legalText, 'Legal Text');
engine.block.appendChild(page, legalText);

// Lock the legal text
engine.block.setScopeEnabled(legalText, 'layer/move', false);
engine.block.setScopeEnabled(legalText, 'layer/resize', false);
engine.block.setScopeEnabled(legalText, 'text/edit', false);
engine.block.setScopeEnabled(legalText, 'lifecycle/destroy', false);

Creating Editable Content Areas#

While brand elements are locked, other areas can remain fully editable. Create content blocks with all scopes enabled:

// Create an editable content area where users can work with brand assets
const contentBlock = engine.block.create('graphic');
const contentShape = engine.block.createShape('rect');
engine.block.setShape(contentBlock, contentShape);
engine.block.setWidth(contentBlock, 400);
engine.block.setHeight(contentBlock, 300);
engine.block.setPositionX(contentBlock, (pageWidth - 400) / 2);
engine.block.setPositionY(contentBlock, (pageHeight - 300) / 2);

const contentFill = engine.block.createFill('color');
engine.block.setColor(contentFill, 'fill/color/value', {
  r: 1.0,
  g: 0.6,
  b: 0.0,
  a: 1.0
});
engine.block.setFill(contentBlock, contentFill);
engine.block.setName(contentBlock, 'Editable Content');
engine.block.appendChild(page, contentBlock);

// Enable all editing for the editable content block
engine.block.setScopeEnabled(contentBlock, 'layer/move', true);
engine.block.setScopeEnabled(contentBlock, 'layer/resize', true);
engine.block.setScopeEnabled(contentBlock, 'fill/change', true);
engine.block.setScopeEnabled(contentBlock, 'fill/changeType', true);
engine.block.setScopeEnabled(contentBlock, 'lifecycle/destroy', true);
engine.block.setScopeEnabled(contentBlock, 'lifecycle/duplicate', true);

For text blocks that should be editable but restricted to brand fonts:

// Create editable text that uses brand fonts
const editableText = engine.block.create('text');
engine.block.setWidth(editableText, 300);
engine.block.setHeight(editableText, 60);
engine.block.setPositionX(editableText, (pageWidth - 300) / 2);
engine.block.setPositionY(editableText, 150);
engine.block.replaceText(editableText, 'Edit This Headline');
engine.block.setFloat(editableText, 'text/fontSize', 64);
engine.block.setEnum(editableText, 'text/horizontalAlignment', 'Center');
engine.block.setName(editableText, 'Editable Headline');
engine.block.appendChild(page, editableText);

// Enable text editing with brand font restrictions
engine.block.setScopeEnabled(editableText, 'layer/move', true);
engine.block.setScopeEnabled(editableText, 'layer/resize', true);
engine.block.setScopeEnabled(editableText, 'text/edit', true);
engine.block.setScopeEnabled(editableText, 'lifecycle/destroy', true);

Validating Brand Compliance#

Check that brand constraints are properly enforced using engine.block.isAllowedByScope():

// Validate brand compliance
const isLogoLocked = !engine.block.isAllowedByScope(
  logoBlock,
  'layer/move'
);
const isLegalLocked = !engine.block.isAllowedByScope(
  legalText,
  'text/edit'
);
const isContentEditable = engine.block.isAllowedByScope(
  contentBlock,
  'fill/change'
);

console.log(`Logo is locked: ${isLogoLocked}`);
console.log(`Legal text is locked: ${isLegalLocked}`);
console.log(`Content block is editable: ${isContentEditable}`);

This method considers both global and block-level scope settings to determine if an operation is permitted.

Troubleshooting#

Colors still editable: Ensure the default color palette source is omitted from the sourceIds array in updateAssetLibraryEntry()
Fonts not restricted: Verify the font library configuration targets 'ly.img.typefaces' and excludes default sources
Locked elements still movable: Check that global scopes are set to 'Defer' before setting block-level restrictions
Brand elements deletable: Confirm lifecycle/destroy scope is disabled on the specific blocks

API Reference#

Method	Category	Purpose
`engine.asset.addLocalSource(id)`	Asset	Create a custom asset source for brand assets
`engine.asset.addAssetToSource(sourceId, asset)`	Asset	Add an asset to a local source
`cesdk.ui.updateAssetLibraryEntry(libraryId, config)`	UI	Configure which sources appear in asset libraries
`engine.editor.setGlobalScope(scope, value)`	Scope	Set editor-wide scope permission to `'Defer'`
`engine.block.setScopeEnabled(id, scope, enabled)`	Scope	Enable or disable a scope for a specific block
`engine.block.isAllowedByScope(id, scope)`	Scope	Check if an operation is allowed