[OpenLayers-Users] Problem wth ScaleBar

[David R Robison]

Found the problem. I have 10 style sheets loaded into the application. 
When processing the first, the access to cssRules through the error: 
NS_ERROR_DOM_INVALID_ACCESS_ERR. This error caused the other style 
sheets to be ignored. If I replaced the "break" in the catch block with 
"continue", all was well. David

Tim Schaub wrote:
> Hey-
>
> Tim Schaub wrote:
>   
>> Hey-
>>
>> Can you send me a bit more context?  If you can't provide a link to a 
>> live site, but can send a page (or pages), send directly to me.
>>     
>
> Sorry, and browser info.
>
>   
>> Thanks,
>> Tim
>>
>> David R Robison wrote:
>>     
>>> It looks like I have the right code. I think the problem is with the 
>>> styleValue routine. I have had to modify the following code in the draw 
>>> function:
>>>
>>>         var vertDisp = 0;
>>>         for(var classIndex = 0; classIndex < classNames.length; 
>>> ++classIndex) {
>>>             var cls = classNames[classIndex];
>>>             vertDisp = Math.max(
>>>                 vertDisp,
>>>                 this.styleValue(cls, 'top') + this.styleValue(cls, 'height')
>>>             );
>>>         }
>>>         if (vertDisp == 0) vertDisp = 30;
>>>
>>> The vertDisp value was coming out to be zero. By adding the last line 
>>> and setting it to 30 it helped, but the bar still looks a bit off. I 
>>> load a number of style sheets and I think that there is an issue with 
>>> one that is causing the problem. I suspect the following code in styleValue:
>>>
>>>                         if(typeof(sheet.cssRules) == 'undefined') {
>>>                             if(typeof(sheet.rules) == 'undefined') {
>>>                                 // can't get rules, assume zero
>>>                                 break;
>>>                             } else {
>>>                                 allRules = sheet.rules;
>>>                             }
>>>                         } else {
>>>                             allRules = sheet.cssRules;
>>>                         }
>>>
>>> I am wondering if the "break;" should be a "continue;"? Any thoughts? David
>>>
>>> Tim Schaub wrote:
>>>       
>>>> Hey-
>>>>
>>>> David R Robison wrote:
>>>>   
>>>>         
>>>>> I was using the one in the tschaub sandbox. David
>>>>>
>>>>>     
>>>>>           
>>>> If you take a look at the patch for the scale bar, you'll see there are 
>>>> some changes required to the default stylesheet.
>>>>
>>>> http://trac.openlayers.org/attachment/ticket/24/scalebar.patch
>>>>
>>>> In addition, you'll want to add your stylesheet with a link tag instead 
>>>> of relying on the default dynamically added stylesheet.
>>>>
>>>> <link rel="stylesheet" href="../theme/default/style.css" type="text/css" />
>>>>
>>>> Thanks for trying it out.  Write back if you still have any trouble with it.
>>>>
>>>> Tim
>>>>
>>>>
>>>>   
>>>>         
>>>>> Christopher Schmidt wrote:
>>>>>     
>>>>>           
>>>>>> On Mon, Jan 21, 2008 at 06:43:27PM -0500, David R Robison wrote:
>>>>>>   
>>>>>>       
>>>>>>             
>>>>>>>  I am trying to get the OpenLayers.Control.ScaleBar working. I've added 
>>>>>>> it to my map according to the example html. However, when my map draws, 
>>>>>>> I get the units (in my case 'miles') but it displays at the bottom of 
>>>>>>> the map and I get no scale bar. Its as if the scale bar is below the map 
>>>>>>> and hidden. Any thoughts on how to get this to work correctly? Thanks, David
>>>>>>>     
>>>>>>>         
>>>>>>>               
>>>>>> Are you adding ScaleBar (which isn't in trunk) or Scale()? OpenLayers
>>>>>> does not currently have a ScaleBar control.   
>>>>>>
>>>>>> Regards,
>>>>>>   
>>>>>>       
>>>>>>             
>>>>> -- 
>>>>>
>>>>> David R Robison
>>>>> Open Roads Consulting, Inc.
>>>>> 708 S. Battlefield Blvd., Chesapeake, VA 23322
>>>>> phone: (757) 546-3401
>>>>> e-mail: drrobison at openroadsconsulting.com
>>>>> web: http://openroadsconsulting.com
>>>>> blog: http://therobe.blogspot.com
>>>>> book: http://www.xulonpress.com/book_detail.php?id=2579
>>>>>
>>>>>  
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------------------
>>>>>
>>>>> _______________________________________________
>>>>> Users mailing list
>>>>> Users at openlayers.org
>>>>> http://openlayers.org/mailman/listinfo/users
>>>>>
>>>>>
>>>>>
>>>>>     
>>>>>           
>>>> _______________________________________________
>>>> Users mailing list
>>>> Users at openlayers.org
>>>> http://openlayers.org/mailman/listinfo/users
>>>>   
>>>>         
>>> -- 
>>>
>>> David R Robison
>>> Open Roads Consulting, Inc.
>>> 708 S. Battlefield Blvd., Chesapeake, VA 23322
>>> phone: (757) 546-3401
>>> e-mail: drrobison at openroadsconsulting.com
>>> web: http://openroadsconsulting.com
>>> blog: http://therobe.blogspot.com
>>> book: http://www.xulonpress.com/book_detail.php?id=2579
>>>
>>>  
>>>
>>> !DSPAM:4033,479e3dc020313362379201!
>>>       
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>>
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>>     
>
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> Users mailing list
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> http://openlayers.org/mailman/listinfo/users
>   

-- 

David R Robison
Open Roads Consulting, Inc.
708 S. Battlefield Blvd., Chesapeake, VA 23322
phone: (757) 546-3401
e-mail: drrobison at openroadsconsulting.com
web: http://openroadsconsulting.com
blog: http://therobe.blogspot.com
book: http://www.xulonpress.com/book_detail.php?id=2579

 

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