Quoting SRIDHARAN Aravind <[EMAIL PROTECTED]>: > If 'Print' button could be disabled, > why not 'Save' button?
> What is the technical issue behind this? I thought it was in the mailing list archives, but I didn't find it. > Please let me know as I need to explain my higher officials here who asked > this. > I want some in-depth technical details I am in a very crucial stage to > explain them. The interpretation of a file is done by a tool: Acrobat Reader, GhostView,... These tools follow the PDF specs, so if the PDF specs allow you to disable actions such as Printing, Copying parts of the content, Annotate,... These tools will support this. The transport of the file IS NOT DEPENDENT FROM THE SPECS. It is not a PDF issue. A server provides a file (ANY FILE, not just PDF) and it is sent to a client (a browser, a GET in a telnet session, an application,...) using the HTTP protocol. So ANY user can retrieve the document from your server in different ways and SAVE it. If the document is password protected, the user may not be able to open it or read it, but he will always be able to save it. Most client applications DO SAVE the document EVEN IF CACHING IS DISABLED. The PDF file is saved in the TEMP directory. Before a PDF file can be interpreted the CrossReference Table has to be read. The CrossReference table tells the Viewer where to find all the PDF objects (containing content, text, fonts, images,...). It is always AT THE END of a PDF file (there are exceptions, but I don't want to get to technical!). So before the Viewer can show anything, it needs to read the complete file (to read the X-Reference table at the end) and then retrieve all the objects that are referenced in the X-Reference table. A Viewer could keep the complete file in memory to do this, but most Viewer store it on disk. > Earnestly awaiting your reply. > Please do not think that I trouble or disturb you anyway. I sent a copy to the mailing list so other people can comment on my answer. Paulo Soares and Leo Rosenthal can give you a lot more details. Bruno ------------------------------------------------------- This sf.net email is sponsored by: See the NEW Palm Tungsten T handheld. Power & Color in a compact size! http://ads.sourceforge.net/cgi-bin/redirect.pl?palm0001en _______________________________________________ iText-questions mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/itext-questions
