[Marble-bugs] [Bug 310493] New: When map theme changes, previous theme's unavailable tiles are tried to download for ever.

[Ander Pijoan]

https://bugs.kde.org/show_bug.cgi?id=310493

            Bug ID: 310493
          Severity: normal
           Version: 1.4.0 (KDE 4.9.0)
          Priority: NOR
          Assignee: marble-bugs at kde.org
           Summary: When map theme changes, previous theme's unavailable
                    tiles are tried to download for ever.
    Classification: Unclassified
                OS: Linux
          Reporter: ander.pijoan at deusto.es
          Hardware: Gentoo Packages
            Status: UNCONFIRMED
         Component: general
           Product: marble

When Marble tries to download tiles for a map, if some of those are not
available or aren't downloaded correctly, they are stored to retry later.

Download is retried after some seconds and if it doesn't work, the time amount
is multiplied by two and waited to try again after it.

If we change to another map theme, these tiles are still tried to download. If
the amount of tiles is big, Marble will lag when retrying to download them.

Reproducible: Always

Steps to Reproduce:
1. Open a tile server which doesn't have all the tiles.
2. Go in the map to the place where it should download some of those missing
tiles.
3. After it has tried to download them without success, change map theme to
another.
4. It will still try to download those tiles from the previouse theme.


Expected Results:  
When changing map theme, remove pending or crashed tiles from the previous
theme.

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