PdfViewerCalculateZoomFunction typedef

PdfViewerCalculateZoomFunction = double? Function(PdfDocument document, PdfViewerController controller, double fitZoom, double coverZoom)

Function to calculate the initial zoom level.

If the function returns null, the viewer will use the default zoom level. You can use the following parameters to calculate the zoom level:

• fitZoom is the zoom level to fit the "initial" page into the viewer.
• coverZoom is the zoom level to cover the entire viewer with the "initial" page.

Implementation

typedef PdfViewerCalculateZoomFunction =
    double? Function(PdfDocument document, PdfViewerController controller, double fitZoom, double coverZoom);