Guides

Watermark

ComPDFKit_Tools provides watermark functionality, supporting both text and image watermarks.

Entry Configuration

Access watermark settings via the "watermark" item in the More menu:

{
  "toolbarConfig": {
    "availableMenus": [
      "watermark"
    ]
  }
}

Watermark Configuration

Preset default watermark properties via GlobalConfig's watermarkConfig:

{
  "global": {
    "watermarkConfig": {
      "watermarkType": "text",
      "text": "ComPDFKit",
      "textColor": "#000000",
      "textColorAlpha": 128,
      "fontSize": 48,
      "isBold": false,
      "isItalic": false,
      "rotation": -45,
      "opacity": 0.5,
      "scale": 1.0,
      "isFront": true,
      "isTile": false,
      "horizontalSpacing": 50,
      "verticalSpacing": 50
    }
  }
}

Field	Description
watermarkType	Watermark type: "text" or "image"
text	Text watermark content
textColor	Text color
textColorAlpha	Text opacity (0-255)
fontSize	Font size
isBold	Whether bold
isItalic	Whether italic
rotation	Rotation angle (degrees)
opacity	Overall opacity (0.0-1.0)
scale	Scale ratio
isFront	Whether on page foreground (true) or background (false)
isTile	Whether to tile
horizontalSpacing	Tile horizontal spacing
verticalSpacing	Tile vertical spacing

CWatermarkEditDialog

CWatermarkEditDialog is the watermark editing dialog, located in the com.compdfkit.tools.security.watermark package.

Features

• Create text watermarks
• Create image watermarks
• Real-time watermark preview
• Adjust watermark position, rotation, opacity, and other properties
• Set tile mode

Related Components

Component	Description
CWatermarkEditDialog	Watermark editing dialog
CWatermarkTextWidget	Text watermark editing widget
CWatermarkImageWidget	Image watermark editing widget