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[Phill <1016106@xxxxxxxxxxxxxxxxxx>]

** Changed in: openlp
       Status: Confirmed => Won't Fix

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https://bugs.launchpad.net/bugs/1016106

Title:
  Watch for changes to images on disk

Status in OpenLP:
  Won't Fix
Status in OpenLP trunk series:
  Won't Fix

Bug description:
  OpenLP 1.9.9 (Windows XP Home)

  Currently when an image is added to OpenLP, it's copied to another
  location and the original image is never touched again.

  This means that if the original image is ever changed, OpenLP will
  never pick it up.

  I think it could handle this a little more smartly:

  1) The original image paths should be stored, and when OpenLP is
  started, it should check those paths for existence.

  2) If the file exists and is a valid image, it should update the
  currently stored image. If the file does not exist, it should be
  ignored for the remainder of the session and the copy should be used
  (just in case it's been added from a weird place that only exists
  sometimes).

  3) If the image existed, OpenLP should use the QT file watching API to
  watch for modifications/replacements of the image on disk.

  4) Whenever an image is modified, OpenLP should run a callback to the
  original caller which asked for the image data, so that it can decide
  what to do with the updated image (if anything). For example, it could
  update the thumbnail shown and also update the preview/live view if
  it's being used at the time.

  As a bonus of all this, it allows for some pretty cool things to be
  scripted as just changes to images. For example, you could produce a
  graph/plot of something live and have it update the image every so
  often by replacing it.

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