TPDFlibCompositeWatermark

Data types, page layout

Description

TPDFlibCompositeWatermark is the concrete TPDFlibWatermarkBase subclass that groups child watermarks and applies all of them in a single ApplyWatermark call

Add any mix of TPDFlibTextWatermark, TPDFlibImageWatermark and TPDFlibShapeWatermark instances with Add; the composite owns the children and frees them in its destructor

The composite applies every child to the same PageRange; each child keeps its own Position and Opacity settings, and the composite page range is pushed down to children that have an empty page range

Syntax

Delphi

TPDFlibCompositeWatermark = Class(TPDFlibWatermarkBase)
  Public
    Constructor Create; Override;
    Destructor Destroy; Override;
    Procedure Add(Item: TPDFlibWatermarkBase);
    Property Count: Integer Read GetCount;
    Property Items[Index: Integer]: TPDFlibWatermarkBase Read GetItem; Default;
    Function Apply(Lib: TObject): Integer; Override;
  End;

Methods

Add	Appends a child watermark; the composite takes ownership
Count	Number of child watermarks held
Items	Accesses a child by zero-based index; the property is the class default

Return value

Apply returns the number of pages the child watermarks were placed on

Remarks

Use a composite when one stamp needs several layers, for example a shape band with centred text on top of the same pages