[OpenLayers-Users] Problem wth ScaleBar

[David R Robison]

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
>>
>>  
>>
>> !DSPAM:4033,4795347f311362458217002!
>>
>>
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
>> Users mailing list
>> Users at openlayers.org
>> http://openlayers.org/mailman/listinfo/users
>>
>>
>> !DSPAM:4033,4795347f311362458217002!
>>     
>
> _______________________________________________
> 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

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/openlayers-users/attachments/20080128/e8b2aa4a/attachment.html