DIRECTORYImagerPixelMap USING [PixelMap],PDFileReader USING [Handle, WhatChanged],ViewerClasses USING [Viewer];PDPageReader: CEDAR DEFINITIONS = BEGINHandle: TYPE=REF Rep;Rep: TYPE=RECORD [pixelMap: ImagerPixelMap.PixelMap];PageRecRef: TYPE=REF PageRec;PageRec: TYPE=RECORD [link: PageRecRef, --NIL => end of listtype: PDFileReader.WhatChanged, --imageStart or loadChangepageNumber: INT, -- -1 if loadChangeindex: INT --index in PD file of the startImage or storeLoad command];PaintActionProc: TYPE = PROC [self: ViewerClasses.Viewer, whatChanged: REF ANY];InterpretPage: PROC [handle: PDFileReader.Handle, viewer: ViewerClasses.Viewer, pages: PageRecRef, paintAction: PaintActionProc] RETURNS [ok: BOOLEAN];GetPageStructure: PROCEDURE [handle: PDFileReader.Handle] RETURNS [PageRecRef, INT];ResetToPage: PROCEDURE [pdData: REF ANY] RETURNS [PageRecRef];END.  Ò  PDPageReader.mesaLast edited by Ken Pier, September 5, 1985 11:08:51 am PDTInterprets one page (may be multiple passes), and ships it out.May raise PDFileReader.Warning or PDFileReader.Error or PDReaderOutput.Error or PDReaderOutput.AbortReturns FALSE upon document end.assumes filestream is available from Handle and Gets can be executed safelyscans the PD file and returns a linked list of records which contain the indexesin the file of imageStart or loadChange commands. Allows a client to skip thru the fileto a particular page, building the load for that page as needed. The total number of pages is also returned.pdData MUST BE a Preview.PDDataa DUMB routine to reconstruct the load for the given page "pageNumber".requires that a page structure has already been built using GetPageStructureand passed in as parameter "pages". Returns a PageRecRef for the page that has beensuccessfully reset to. Returns NIL if pageNumber is not in the pages list. Ê“  ˜ Jšœ™J™:J˜ šÏk	˜	Jšœœœ&œ
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