Contents

previewPanel(_:sourceFrameOnScreenFor:)

Returns the screen rectangle for a given preview item.

Declaration

optional func previewPanel(_ panel: QLPreviewPanel!, sourceFrameOnScreenFor item: (any QLPreviewItem)!) -> NSRect

Parameters

  • panel:

    The preview panel.

  • item:

    The preview item for which the screen rectangle is required.

Return Value

The screen rectangle for the given preview item. Return NSZeroRect if there is no origin point (this will produce a fade of the panel).

Discussion

The system invokes this optional method when the preview panel opens or closes to provide a zoom effect. You should return — in screen coordinates — the rectangle that displays the specified preview item.

See Also

Optional Methods