Blind Watermark Configuration

Inheritance Note

This configuration inherits all options from Watermark Configuration Options, but enforces fixed values for:

• globalAlpha: Always 0.005 (cannot be modified)
• mode: Always 'blind' (cannot be modified)

Specialized Properties

globalAlpha

• Type: number
• Fixed Value: 0.005
• Description: Preset to ultra-low transparency for blind watermark effect. All modification attempts will be automatically overridden.

mode

• Type: string
• Fixed Value: 'blind'
• Description: Locked in blind watermark mode. Changing this value has no effect.

Technical Implementation

The blind watermark:

1. Inherits all standard watermark capabilities
2. Automatically enforces globalAlpha=0.005 during initialization and all updates
3. Permanently sets mode='blind' (even if other values are provided)
4. Maintains all other configurable options from the parent class

Example Usage

// These values will be automatically corrected:
new BlindWatermark({
  globalAlpha: 0.1,  // Will be forced to 0.005
  mode: 'default'    // Will be forced to 'blind'
})