[ka-Map-users] iframe passing extents back to containing page
percy
percyd at pdx.edu
Thu Sep 28 17:47:00 EDT 2006
We are trying to change the behavior for a dblclick: zoom to next scale
AND recenter map.
When we try "welding" these two functions together, KaZoom and
ondblclick, we get a funny behaviour.
the map zooms, but it doesn't actually make it all the way to the new
zoompoint.
it looks like there's some interesting timers being set to allow for the
smooth sliding.
can you give us a hint on the best way to implement this?
Thanks,
Percy
Paul Spencer wrote:
> look in kaTool.js ...
>
> Cheers
>
> Paul
>
> On 6-Sep-06, at 2:34 PM, percy wrote:
>
>> Thanks Paul, that was easy, next time I promise to look at kamap.js a
>> little closer :-)
>>
>> Though maybe you could save me some time on this question:
>> I'd like to modify the default behaviour on a dbl-click to zoom in AND
>> pan, instead of just panning.
>>
>> Can I have a clue on this one as well?
>>
>> Thanks a bunch,
>> Percy
>>
>> Paul Spencer wrote:
>>> Percy,
>>>
>>> to set the extents of the iframe, you can do something like:
>>>
>>> document.getElementById('frameid').contentWindow.myKaMap.zoomToExtents(minx,miny,maxx,maxy);
>>>
>>>
>>> Cheers
>>>
>>> Paul
>>>
>>> On 6-Sep-06, at 12:41 AM, percy wrote:
>>>
>>>> So, now that we have a way to GET the extents that the user zoomed
>>>> to, we'd like to do the opposite!
>>>>
>>>> We'd like to SET the extents of the iframe, based on what the user
>>>> has already zoomed to, after they look at their results and then hit
>>>> the back button in their browser to refine their search.
>>>>
>>>> I can capture and parse the extents from the bounding box fields
>>>> using the window.onload event, but I am trying to figure out the
>>>> most elegant way to pass these to the iframe object. I couldn't find
>>>> a "setGeoExtents" method. I thought about programmatically poking
>>>> the values into the src property of the iframe object, but I worry
>>>> that I am setting myself up for some creepy cross-browser DOM issues.
>>>>
>>>> Any ideas on the best approach to this? Here's the beta version we
>>>> are using for testing:
>>>> http://ngmdb.usgs.gov/ngmdb_work/ngm_compsearch_map.html
>>>>
>>>> Thanks,
>>>> Percy
>>>>
>>>> percy wrote:
>>>>> Hi Paul, below is the code we ended up using, in case it helps
>>>>> anyone else...
>>>>> And here's the page it's in for testing:
>>>>> http://geospatial.research.pdx.edu/~bjpd/usgs/ngm_quicksearch9.html
>>>>>
>>>>> Thanks again,
>>>>> Percy
>>>>>
>>>>> -------------------iframe code to dump extents into hidden fields
>>>>> for database search----------------
>>>>> <iframe id = "geosrchmap" name= "geosrchmap" src =
>>>>> "http://geospatial.research.pdx.edu/~bjpd/kamap-cvs/htdocs/iframe.html"
>>>>> width = "100%" height = "400">
>>>>> </iframe>
>>>>> <input name = "showextents" value ="Use This Extent" type =
>>>>> "button" onclick = "storeExtents()">
>>>>> <script type = "text/javascript" language = "javascript">
>>>>> function storeExtents()
>>>>> {
>>>>> var myextents =
>>>>> document.getElementById('geosrchmap').contentWindow.myKaMap.getGeoExtents()
>>>>>
>>>>> //alert(myextents)
>>>>> document.getElementById('kaminx').value = myextents[0]
>>>>> document.getElementById('kaminy').value = myextents[1]
>>>>> document.getElementById('kamaxx').value = myextents[2]
>>>>> document.getElementById('kamaxy').value = myextents[3]
>>>>> }
>>>>>
>>>>> </script>
>>>>> <input id="kaminx" name="kaminx" type = "hidden" value="" >
>>>>> <input id="kaminy" name="kaminy" type = "hidden" value="" >
>>>>> <input id="kamaxx" name="kamaxx" type = "hidden" value="" >
>>>>> <input id="kamaxy" name="kamaxy" type = "hidden" value="" >
>>>>> ---------------------------------------------------------------------------------------------------------
>>>>>
>>>>>
>>>>> Paul Spencer wrote:
>>>>>> Percy,
>>>>>>
>>>>>> I'll try to catch you on IRC (pagameba) but in case I don't ...
>>>>>>
>>>>>> If your iframe is loaded from the same site as your main page,
>>>>>> then you are allowed to script between them. Whatever triggers
>>>>>> your query, you can do one of the following:
>>>>>>
>>>>>> 1) from the main page (in response to clicking a button or
>>>>>> something), you can call the kaMap object in the frame ...
>>>>>>
>>>>>> document.getElementById('frameid').contentWindow.myKaMap.getExtents();
>>>>>>
>>>>>>
>>>>>> 2) from the iframe (in response to an event for instance), you can
>>>>>> call a function in the parent window ...
>>>>>>
>>>>>> window.parent.someFunction();
>>>>>>
>>>>>> Cheers
>>>>>>
>>>>>> Paul
>>>>>>
>>>>>> On 31-Jul-06, at 1:19 PM, percy wrote:
>>>>>>
>>>>>>> I would like to embed a kamap iframe within a database search
>>>>>>> page and
>>>>>>> have it pass back the extent of what the user has zoomed to so
>>>>>>> that I
>>>>>>> can use this in a query to my database.
>>>>>>>
>>>>>>> the goofy part is that the embedding page is a Perl CGI, so I
>>>>>>> think I'm stuck using Perl mapscript to access the iframe's
>>>>>>> properties.
>>>>>>>
>>>>>>> any hints on the best way to do this? I'm on the IRC right now...
>>>>>>>
>>>>>>> thanks,
>>>>>>> percy
>>>>>>>
>>>>>>> PS I searched the mailing list archives already...
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> ka-Map-users mailing list
>>>>>>> ka-Map-users at lists.maptools.org
>>>>>>> http://lists.maptools.org/mailman/listinfo/ka-map-users
>>>>>>
>>>>>> +-----------------------------------------------------------------+
>>>>>> |Paul Spencer pspencer at dmsolutions.ca |
>>>>>> +-----------------------------------------------------------------+
>>>>>> |Applications & Software Development |
>>>>>> |DM Solutions Group Inc http://www.dmsolutions.ca/|
>>>>>> +-----------------------------------------------------------------+
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>
>>>> _______________________________________________
>>>> ka-Map-users mailing list
>>>> ka-Map-users at lists.maptools.org
>>>> http://lists.maptools.org/mailman/listinfo/ka-map-users
>>>
>>> +-----------------------------------------------------------------+
>>> |Paul Spencer pspencer at dmsolutions.ca |
>>> +-----------------------------------------------------------------+
>>> |Applications & Software Development |
>>> |DM Solutions Group Inc http://www.dmsolutions.ca/|
>>> +-----------------------------------------------------------------+
>>>
>>>
>>>
>>>
>>>
>>
>
> +-----------------------------------------------------------------+
> |Paul Spencer pspencer at dmsolutions.ca |
> +-----------------------------------------------------------------+
> |Applications & Software Development |
> |DM Solutions Group Inc http://www.dmsolutions.ca/|
> +-----------------------------------------------------------------+
>
>
>
>
>
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