[Chameleon-dev] [Bug 1073] Scale widget does not have a JSAPI mode of operation

[bugzilla-daemon at bugzilla.maptools.org]

http://bugzilla.maptools.org/show_bug.cgi?id=1073

bartvde at xs4all.nl changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |BEN at syncera-itsolutions.nl



------- Additional Comments From bartvde at xs4all.nl  2005-06-04 14:08 -------
Okay, I finally managed to tackle this and get it to work. 

But since I am not 100% sure this is the best solution, I would like some
feedback from Paul/Julien before committing this.

I changed:

1) Scale.widget.php:

KeyPressed function:
        if ($bCWCJSAPI)
        {
          CWCZoomToScale({$this->mszHTMLForm}.SCALE.value);
        }
        else
        {
          // clear the navigation form
          {$this->mszHTMLForm}.NAV_CMD.value = '';

          {$this->mszHTMLForm}.UPDATE_MAP.value = "1";
          {$this->mszHTMLForm}.submit();
        }

2)

cwcjsapi.js

Added function CWCZoomToScale:

function CWCZoomToScale(scale)
{
     aHiddenVars = new Array(2);
     aHiddenVars[0] = new Array(2);
     aHiddenVars[0][0] =  "ZOOM_TO_SCALE";
     aHiddenVars[0][1] = "1";

     aHiddenVars[1] = new Array(2);
     aHiddenVars[1][0] =  "ZOOM_SCALE";
     aHiddenVars[1][1] = scale;

    
goCWCJSAPI.oMap.oApplication.CallServer("goCWCJSAPI.MapExtentsUpdated()",aHiddenVars);
     return true;
}

3) changed UpdateMap.php, added the following:

if (isset( $HTTP_FORM_VARS["ZOOM_TO_SCALE"]) &&
    $HTTP_FORM_VARS["ZOOM_TO_SCALE"] != "")
{
    $oMap = $oMapSession->oMap;
    if (isset($HTTP_FORM_VARS["ZOOM_SCALE"]))
      $szScale = $HTTP_FORM_VARS["ZOOM_SCALE"];
    {
	    $nCenterX = ($oMap->extent->minx+$oMap->extent->maxx)/2;
	    $nCenterY = ($oMap->extent->miny+$oMap->extent->maxy)/2;

	    $inchesPerUnit = array(1, 12, 63360.0, 39.3701, 39370.1, 4374754);

	    $nWidthX =
($szScale*$oMap->width)/($oMap->resolution*$inchesPerUnit[$oMap->units]);
	    $nWidthY =
($szScale*$oMap->height)/($oMap->resolution*$inchesPerUnit[$oMap->units]);

	    $nMinX = $nCenterX-($nWidthX/2);
	    $nMaxX = $nCenterX+($nWidthX/2);
	    $nMinY = $nCenterY-($nWidthY/2);
	    $nMaxY = $nCenterY+($nWidthY/2);
	    $oMap->extent->setExtent($nMinX, $nMinY, $nMaxX, $nMaxY);
	    $szFormContents .= BuildHTMLOutputMapExtentsChanged($oMap);
    }
}

Ideas? Thoughts?



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