OpenLayers Blog

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More work on mobile and 2.11

April 2nd, 2011 by Eric Lemoine · 32 Comments

Three of us, here at Camptocamp, sprinted three days on OpenLayers. Our goal was two-fold: close tickets for the upcoming 2.11 release, and improve our mobile story, following up on the work done during the mobile sprint (see the previous posts on this blog).

Day #1

We started out by reviewing patches, and closing tickets, for 2.11. We closed a dozen tickets, getting us much closer to the 2.11 release. Some of the new features now in trunk include:

  • New icons for the navigation toolbar, see the navigation toolbar example (patch from Xavier Mamano).
  • Support for OpenLS (Location Service Utility), see the OpenLS example (patch from Bart van den Eijnden).
  • Remove dependencies between scripts to be able to produce smaller single file builds (patch from Frédéric Junod.

Day #2

On Day #2 we spent some more time on bug fixing (and ticket closing) for 2.11, and then switched to improving our mobile support.

  • We spent a great deal of time on many (not so) small Android WebKit-specific issues. The browser often reacts to user actions, causing nasty effects like flashes if no proper action is taken in the JavaScript code.
  • We started reviewing Tim Schaub’s Canvas Hit Detection patch. This patch will give us feature selection on Android, it isn’t committed into trunk at time of this writing but Tim will certainly do it in the coming days.
  • We worked on feature drawing, refactoring code and tests, making feature drawing more solid in every supported mobile browser. See the draw feature example.

Day #3

Day #3 was mainly about mobile again.

  • And mainly about Android again… we committed patches preventing Android’s default behavior, and researched why Android “flashed” the map when two quick taps, apart from one another, occur. There’s stil some work left for a perfect Android story, but code and knowledge have improved a lot.
  • We finished reviewing Tim’s Canvas Hit Detection patch, and reviewed and committed other patches for 2.11.
  • We completed “select feature” support, and added support for “drag feature” and “modify feature”. We modified the mobile drawing example to be able to demo these new features. Go check out the mobile drawing example. (in Android or iOS)!

So, overall, lots of progress on the mobile front, and just a few tickets away from OpenLayers 2.11!

Tags: Uncategorized

32 responses so far ↓

  • 1 NS // Apr 3, 2011 at 12:29 am

    I hope you have saving strategy for mobile drawing. I think using sqlite3 / spatialite would be the best thing to do.

    Implementing a direct connection using a file protocol (SQL query without server) to sqlite / spatialite database would make this endeavor useful for offline mobile GIS mapping.

    Thanks.

  • 2 Tim Schaub // Apr 3, 2011 at 12:46 am

    Thanks for the additional work toward 2.11 – it’s exciting to see it coming together.

    Note that I did get the canvas hit detection patch in a couple days ago.

  • 3 M // Apr 3, 2011 at 1:43 pm

    I’d be interested to know if the mobile development/examples will also account for non-touch mobile devices. For example, many blackberries without touch screens lack the ability to click-and-drag. In the absence of this, default keys and/or extra buttons to compensate for this would be needed.

  • 4 Open Layers & Mobile: quasi pronta la release 2.11? « Cesare Gerbino GIS Blog // Apr 4, 2011 at 5:36 pm

    [...] blog ufficiale di Open Layers è apparso un post nel quale si annunciano ulteriori miglioramenti nella versione in [...]

  • 5 T // Apr 6, 2011 at 2:40 am

    Hey,
    As a person who likes to look at your demos page lots and see what’s new, it’d be great if you could add a date tag to them (and possibly allow the user to arrange them by date?). Also, some of the demos use a more advanced revision than currently you give out via the standard js link or download. Again, a tag with the revision number that the demo uses would be handy!
    Keep up the good work!

  • 6 GIS-Lab Blog» Архив блога » Новости вокруг 60 // Apr 8, 2011 at 6:26 am

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  • 7 Frank // Apr 12, 2011 at 7:19 pm

    Thanks for advancing the cause of OpenLayers mobile. My mobile map customers have commented favorably on the performance improvements from the code sprint. Looking forward to the 2.11.

  • 8 Otto Krauth // Nov 28, 2011 at 5:18 pm

    I noticed that markers popups examples in OL examples for 2.11 don’t work on iOS moblie browsers.

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