bugPSPP - Bugs: bug #24980, Idle time fetching of data

 
 

bug #24980: Idle time fetching of data

Submitted by:  John Darrington <jmd>
Submitted on:  Tue 02 Dec 2008 09:15:24 AM UTC  
 
Category: Graphical User InterfaceSeverity: 1 - Wishlist
Status: NoneAssigned to: None
Open/Closed: OpenRelease: Future
Effort: 0.00

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Tue 02 Dec 2008 09:15:24 AM UTC, original submission:

If a user opens a very large system file (or an input source with high latency) in the GUI, there is little delay displaying that file. However, when she scrolls down through the data, there is a noticeable delay whilst the data is read from disk (or other source).

In extreme cases, this can't be avoided, but typically the user will pause, to view the first part of the data, before hitting the scroll down button. This pause provides an opportunity to preload the data.

To do this we need an additional function to src/data/datasheet.c of the form

bool datasheet_preload_next_chunk (struct datasheet *d, int size);

which loads the next chunk of data and returns true if there's more data to be loaded.

The GUI can then call this function in a low priority idle callback until it returns false.

John Darrington <jmd>
Project Administrator

 

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  • -unavailable- added by blp (Updated the item)
  • -unavailable- added by jmd (Submitted the item)
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    Follows 1 latest change.

    Date Changed By Updated Field Previous Value => Replaced By
    Sat 14 May 2011 04:52:44 AM UTCblpReleaseNone=>Future

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