Copyright (c) 2002, DM Solutions Group Inc. * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ include_once(dirname(__FILE__)."/../Widget.php"); include_once(dirname(__FILE__)."/../Label.php"); /** * a widget to display one of the map extents */ class Extent extends CWCWidget { var $moLabel; var $mszClass = "CWCExtentWidgetClass"; var $mszStyle = ""; var $mszExtent = ""; var $mnDefaultTextFieldSize = 20; /** * construct a new Extent widget */ function Extent( ) { // invoke constructor of parent parent::CWCWidget(); // set the description for this widget $this->szWidgetDescription = <<moLabel = new CWCLabel($this); $this->maAttributes["EXTENT"] = new StringAttribute( "EXTENT", true, array( "MINX", "MINY", "MAXX", "MAXY" ) ); $this->maAttributes["WIDGETCLASS"] = new StringAttribute( "WIDGETCLASS", false ); $this->maAttributes["WIDGETSTYLE"] = new StringAttribute( "WIDGETSTYLE", false ); $this->maAttributes["TEXTFIELDSIZE"] = new IntegerAttribute( "TEXTFIELDSIZE", false, 0 ); $this->mnMaturityLevel = MATURITY_TECHNICALRELEASE; } /** * Initialize default values from tag */ function InitDefaults() { parent::InitDefaults(); if (isset($this->maParams["WIDGETCLASS"])) $this->mszClass = $this->maParams["WIDGETCLASS"]; if (isset($this->maParams["WIDGETSTYLE"])) $this->mszStyle = $this->maParams["WIDGETSTYLE"]; if (isset($this->maParams["EXTENT"])) $this->mszExtent = strtoupper($this->maParams["EXTENT"]); if (isset($this->maParams["TEXTFIELDSIZE"])) $this->mnDefaultTextFieldSize = strtoupper($this->maParams["TEXTFIELDSIZE"]); } /** * return an array of javascript functions needed by Extent widget * @return array of name = function values */ function GetJavascriptFunctions() { $aReturn = array(); $poMap = $this->moMapObject->oMap; if (isset($this->maSharedResourceWidgets["CWCJSAPI"])) $bCWCJSAPI = 1; else $bCWCJSAPI = 0; if ($bCWCJSAPI) { $szJsFunctionName = "ExtentWRegisterForEvent"; $szFunction = <<mszHTMLForm}.Extent_MINX.value = goCWCJSAPI.oMap.minx; {$this->mszHTMLForm}.Extent_MINY.value = goCWCJSAPI.oMap.miny; {$this->mszHTMLForm}.Extent_MAXX.value = goCWCJSAPI.oMap.maxx; {$this->mszHTMLForm}.Extent_MAXY.value = goCWCJSAPI.oMap.maxy; } EOT; $aReturn[$szJsFunctionName] = $szFunction; } return $aReturn; } /** * return an array of javascript functions needed by Extent widget * and called when the page is loaded. * @return array of name = function values */ function GetJavascriptOnLoadFunctions() { $aReturn = array(); $aReturn = parent::GetJavascriptOnLoadFunctions(); if (isset($this->maSharedResourceWidgets["CWCJSAPI"])) { $szJsFunctionName = "ExtentWRegisterForEvent"; $szFunction = "$szJsFunctionName();\n"; $aReturn[$szJsFunctionName] = $szFunction; } return $aReturn; } /** * draw the extent in published state */ function DrawPublish() { if (!$this->mbVisible) return ""; $szValue = ""; $szClass = ""; $szStyle = ""; if (strlen($this->mszExtent) == 0) return "\n"; //get the requested extent value $szEval = "\$szValue = \$this->moMapObject->oMap->extent->"; $szEval .= strtolower($this->mszExtent).";"; eval( $szEval ); $nPixSize = $this->moMapObject->oMap->width; $nGeoSize = $this->moMapObject->oMap->extent->minx - $this->moMapObject->oMap->extent->maxx; $nPixelSize = abs($nPixSize / $nGeoSize); if ($nPixelSize > 1) $nNbDecimal = abs(log($nPixelSize))/log(10)+1; else $nNbDecimal = 0; $nMinX = number_format($szValue, $nNbDecimal, ".", ""); // show the extent as a textbox made to look like a label if (!$this->mbVisible) return ""; $nSize = $this->mnDefaultTextFieldSize; if (isset($this->maParams["TextFieldSize"])) $nSize = strtoupper($this->maParams["TextFieldSize"]); $szClass = ""; if ( strlen($this->mszClass) > 0 ) $szClass = " CLASS=\"$this->mszClass\""; $szStyle = ""; if ( strlen($this->mszStyle) > 0 ) $szStyle = " STYLE=\"$this->mszStyle\""; if (isset($this->maSharedResourceWidgets["CWCJSAPI"])) $szContents="mszExtent."\" value=\"".$nMinX."\" size=\"$nSize\" readonly>"; else $szContents="mnId."\">".$nMinX.""; return $this->moLabel->DrawPublish( $szContents ); } } ?>