ReadonlycallbackReadonlyinstanceReadonlyviewportReadonlywindowzoom factor to fit inside viewport
adjusted zoom factor
Returns width and height of the spread, including the margin between pages.
Refresh view when a currently displayed page is replaced (by re-layout caused by cross reference resolutions)
Returns zoom factor corresponding to the specified zoom type.
Register the PAGINATION_PROGRESS plugin hook lazily, so that viewers without a progress listener do not pay the cost of the progress calculation.