http://techbase.kde.org/index.php?title=Projects/Marble/GeoClue&feed=atom&action=historyProjects/Marble/GeoClue - Revision history2013-05-24T13:22:13ZRevision history for this page on the wikiMediaWiki 1.20.2http://techbase.kde.org/index.php?title=Projects/Marble/GeoClue&diff=40538&oldid=prevEckhart at 14:35, 6 April 20092009-04-06T14:35:54Z<p></p>
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<td colspan='2' style="background-color: white; color:black;">Revision as of 14:35, 6 April 2009</td>
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<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>GeoClue <del class="diffchange diffchange-inline">support </del>in Marble is <del class="diffchange diffchange-inline">planned</del>, <del class="diffchange diffchange-inline">will probably replace </del>the use of <del class="diffchange diffchange-inline">libgps</del>.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">== </ins>GeoClue <ins class="diffchange diffchange-inline">and KDE 4.3 ==</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">=== Status of location awareness </ins>in <ins class="diffchange diffchange-inline">KDE trunk ===</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">There are at least two programs in KDE that want to integrate location awareness: Plasma (as a data engine), and </ins>Marble<ins class="diffchange diffchange-inline">. Marble has code for interacting with HostIP and a (non-working) integration of libgps. Plasma has a data engine that interacts with libgps and HostIP.</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">=== Benifits of using GeoClue in KDE ===</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">GeoClue provides location awareness in a simple DBus API. Interaction with HostIP and gpsd </ins>is <ins class="diffchange diffchange-inline">already possible.</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">In addition</ins>, <ins class="diffchange diffchange-inline">GeoClue also provides other means of retrieving geolocation data, e.g. by using GSM cell positions on suitable devices.</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">GeoClue also allows extension via new providers which only have to depend on DBus.</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">Furthermore, GeoClue shares location data between different applications, so that only one HostIP request is needed for several applications using GeoClue framework.</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">=== Drawbacks of using GeoClue in KDE ===</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">==== Problems with </ins>the <ins class="diffchange diffchange-inline">DBus API ====</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">One major problem with the API is that it is totally undocumented. Semantics of different functions are not clear at all.</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">It is believed that the SetOptions function in the org.freedesktop.Geoclue interface does not serve any </ins>use<ins class="diffchange diffchange-inline">. Since providers can be shared by different applications, setting options in one application can have side-effects in another application.</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">==== Problems with the current implementation ====</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">The current implementation depends on GConf, which is a no-go for an application used by KDE. It is questionnable whether configuration is needed at all - see also section above.</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">There is a crash in the master provider when used in combination with the gpsd provider, which makes the master provider and therefore GeoClue currently unusable for KDE.</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">The project does not seem to be very active at the moment. Response times are quite high.</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">=== Possible further actions ===</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">==== Polish the current implementation and reconsider GeoClue at a later release ====</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">Advantage: working geolocation is available in 4.3.</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">Disadvantage: every KDE application brings its own implementation.</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">==== Urge the maintainers </ins>of <ins class="diffchange diffchange-inline">GeoClue to fix the bugs in time for 4.3 ====</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">Advantage: one common desktop API for geolocation.</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">Disadvantage: dependency on external project for our feature plan.</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">==== Fix the bugs in GeoClue ourselves in time for 4.3 ====</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">Advantage: at least the implementation gets fixed before 4.3.</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">Disadvantage: we have to take care of C code, we still have to get in touch with current maintainers to apply patches and discuss DBus API.</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">==== Write a replacement for the GeoClue implementation in time for 4.3 ====</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">Advantage: working geolocation is available in 4.3; we have some nice C++ program.</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">Disadvantage: sounds a bit like NIH, more work than the other solutions</ins>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del style="color: red; font-weight: bold; text-decoration: none;">== Status of integration ==</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del style="color: red; font-weight: bold; text-decoration: none;">* Some serious bugs in GeoClue - we need to get those fixed first</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del style="color: red; font-weight: bold; text-decoration: none;">* GeoClue currently has gconf dependency, we need to remove this</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del style="color: red; font-weight: bold; text-decoration: none;">* We need to get a new release of GeoClue with the above problems fixed</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del style="color: red; font-weight: bold; text-decoration: none;">* Position drawing in Marble is buggy</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Resources ==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Resources ==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* http://geoclue.freedesktop.org/</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* http://geoclue.freedesktop.org/</div></td></tr>
</table>Eckharthttp://techbase.kde.org/index.php?title=Projects/Marble/GeoClue&diff=40435&oldid=prevEckhart: New page: GeoClue support in Marble is planned, will probably replace the use of libgps. == Status of integration == * Some serious bugs in GeoClue - we need to get those fixed first * GeoClue curr...2009-04-05T12:21:46Z<p>New page: GeoClue support in Marble is planned, will probably replace the use of libgps. == Status of integration == * Some serious bugs in GeoClue - we need to get those fixed first * GeoClue curr...</p>
<p><b>New page</b></p><div>GeoClue support in Marble is planned, will probably replace the use of libgps.<br />
<br />
== Status of integration ==<br />
* Some serious bugs in GeoClue - we need to get those fixed first<br />
* GeoClue currently has gconf dependency, we need to remove this<br />
* We need to get a new release of GeoClue with the above problems fixed<br />
* Position drawing in Marble is buggy<br />
<br />
== Resources ==<br />
* http://geoclue.freedesktop.org/</div>Eckhart