[OpenLayers-Users] Problem wth ScaleBar

David R Robison drrobison at openroadsconsulting.com
Mon Jan 28 16:49:51 EST 2008


Firefox 2.0.0.11 - I will need to check the stylesheets... David

Tim Schaub wrote:
> Hey-
>
> David R Robison wrote:
>   
>> 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
>>     
>
> Yeah, I guessed it was something like that.  Can you mention the name of 
> your browser?  And perhaps give an indication of how your stylesheets 
> are included/linked?  Do any of your stylesheets have no rules in them? 
>   I'm curious to see where sheet.cssRules is undefined for one 
> stylesheet but not the next.
>
> The patch for #24 is updated.  Thanks for any more info.
>
> Tim
>
>   
>> 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
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>>>>>>   
>>>>>>         
>>>>>>             
>>>>> -- 
>>>>>
>>>>> 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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>>>>     
>>>>         
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>>>       
>> -- 
>>
>> 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:4033,479e4b1f56767082231907!
>>     
>
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>   

-- 

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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