THPDFViewer Current View Printing

Draws or prints the current vector view with deterministic aspect-preserving fit and centered placement

Declarations

function HPDFViewerFitRect(const Bounds: TRect;
  ContentWidth, ContentHeight: Integer): TRect;
function THPDFViewerModel.DrawCurrentView(Canvas: TCanvas;
  const Bounds: TRect; DPI: Integer= 150): boolean;
function THPDFViewer.DrawCurrentView(Canvas: TCanvas;
  const Bounds: TRect; DPI: Integer= 150): boolean;
function THPDFViewerModel.PrintCurrentView(Printer: TPrinter;
  const DocumentTitle: string= ''; DPI: Integer= 300): boolean;
function THPDFViewer.PrintCurrentView(Printer: TPrinter;
  const DocumentTitle: string= ''; DPI: Integer= 300): boolean;

Behavior

• HPDFViewerFitRect returns the largest centered rectangle that preserves the source aspect ratio
• DrawCurrentView accepts any caller-owned TCanvas and bounds
• The active page and ViewRotation are preserved through the vector metafile path
• PrintCurrentView fits the result to the printer page and optionally assigns the print job title
• A failed draw aborts an active print job before returning or propagating an exception

Example

PDFViewer.PrintCurrentView(Printer, 'Current PDF view', 300);