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<?php |
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/** |
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* Cursor postion display widget |
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* |
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* @project CWC2 |
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* @revision $Id: Cursorpos.widget.php,v 1.8 2005/01/11 12:32:19 pspencer Exp $ |
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* @purpose Base Widget class |
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* @author DM Solutions Group (assefa@dmsolutions.ca) |
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* @copyright |
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* <b>Copyright (c) 2002, DM Solutions Group Inc.</b> |
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* Permission is hereby granted, free of charge, to any person obtaining a |
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* copy of this software and associated documentation files (the "Software"), |
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* to deal in the Software without restriction, including without limitation |
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* the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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* and/or sell copies of the Software, and to permit persons to whom the |
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* Software is furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included |
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* in all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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* DEALINGS IN THE SOFTWARE. |
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*/ |
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include_once(dirname(__FILE__)."/../Widget.php"); |
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include_once(dirname(__FILE__)."/../Label.php"); |
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|
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/** |
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* CursorPosWidget. |
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* |
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*/ |
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class CursorPos extends CWCWidget |
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{ |
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var $moLabel; |
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var $mnDefaultTextFieldSize = 20; |
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var $mszAxis = "X"; |
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var $mszClass = "CWCCursorPositionWidgetClass"; |
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var $mszStyle = ""; |
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|
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function CursorPos() |
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{ |
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// invoke constructor of parent |
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parent::CWCWidget(); |
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// set the description for this widget |
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$this->szWidgetDescription = <<<EOT |
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Display the current cursor position in geographic coordinates. To assist |
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template developers, this widget can be configured to display one of the |
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two axis of the cursor position. The cursor position must be displayed in |
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an HTML element that can be updated, so an HTML INPUT box is used. CSS can |
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be used to modify the appearance of the INPUT box to make it look nicer in |
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more modern browsers. |
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EOT; |
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|
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$this->moLabel = new CWCLabel( $this ); |
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$this->maAttributes["AXIS"] = new StringAttribute( "AXIS", true, array( "X", "Y" ) ); |
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$this->maAttributes["TEXTFIELDSIZE"] = new IntegerAttribute( "TEXTFIELDSIZE", false, 0 ); |
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$this->maAttributes["WIDGETCLASS"] = new StringAttribute( "WIDGETCLASS", false ); |
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$this->maAttributes["WIDGETSTYLE"] = new StringAttribute( "WIDGETSTYLE", false ); |
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$this->mnMaturityLevel = MATURITY_TECHNICALRELEASE; |
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|
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} |
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|
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function InitDefaults() |
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{ |
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parent::InitDefaults(); |
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if (isset($this->maParams["AXIS"])) |
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$this->mszAxis = strtoupper($this->maParams["AXIS"]); |
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if (isset($this->maParams["TEXTFIELDSIZE"])) |
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$this->mnDefaultTextFieldSize = strtoupper($this->maParams["TEXTFIELDSIZE"]); |
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if (isset($this->maParams["WIDGETCLASS"])) |
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$this->mszClass = $this->maParams["WIDGETCLASS"]; |
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if (isset($this->maParams["WIDGETSTYLE"])) |
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$this->mszStyle = $this->maParams["WIDGETSTYLE"]; |
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} |
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|
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/** |
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* GetJavascriptFunctions |
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* |
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* Build and return the array of functions needed in the |
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* widget. |
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*/ |
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function GetJavascriptFunctions() |
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{ |
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$aReturn = array(); |
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if (isset($this->maSharedResourceWidgets["CWCJSAPI"])) |
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$bCWCJSAPI = 1; |
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else |
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$bCWCJSAPI = 0; |
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|
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$axis = $this->mszAxis; |
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|
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$szJsFunctionName = "Cursor".$axis."MouseMoved"; |
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$szFunction = <<<EOT |
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/** |
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* {$szJsFunctionName} |
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* called when the cursor moves for Cursor Postion widget. |
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*/ |
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function {$szJsFunctionName}(e) |
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{ |
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//make sure that the forms varaibales are initialized. |
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//It seems like that in IE, the mouse move may be called before. |
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if ({$this->mszHTMLForm} == null || |
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{$this->mszHTMLForm}.MAP_CURSOR_POS_${axis} == null) |
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return true; |
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var nPixPos = {$this->mszHTMLForm}.MAP_CURSOR_POS_${axis}.value; |
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var dfGeoMinX; |
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var dfGeoMinY; |
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var dfGeoMaxX; |
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var dfGeoMaxY; |
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var nMapWidth; |
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var nMapHeight; |
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if ({$bCWCJSAPI}) |
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{ |
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dfGeoMinX = goCWCJSAPI.oMap.minx; |
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dfGeoMinY = goCWCJSAPI.oMap.miny; |
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dfGeoMaxX = goCWCJSAPI.oMap.maxx; |
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dfGeoMaxY = goCWCJSAPI.oMap.maxy; |
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nMapWidth = goCWCJSAPI.oMap.width; |
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nMapHeight = goCWCJSAPI.oMap.height; |
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} |
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else |
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{ |
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dfGeoMinX = {$this->mszHTMLForm}.MAP_EXTENTS_MINX.value; |
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dfGeoMinY = {$this->mszHTMLForm}.MAP_EXTENTS_MINY.value; |
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dfGeoMaxX = {$this->mszHTMLForm}.MAP_EXTENTS_MAXX.value; |
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dfGeoMaxY = {$this->mszHTMLForm}.MAP_EXTENTS_MAXY.value; |
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nMapWidth = {$this->mszHTMLForm}.MAP_WIDTH.value; |
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nMapHeight = {$this->mszHTMLForm}.MAP_HEIGHT.value; |
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} |
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if (nPixPos >=0) |
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{ |
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if ("{$axis}" == "X") |
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var dfGeoPos = WidgetPix2Geo(nPixPos, 0, nMapWidth, dfGeoMinX, |
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dfGeoMaxX, 0); |
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else |
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var dfGeoPos = WidgetPix2Geo(nPixPos, 0, nMapHeight, dfGeoMinY, |
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dfGeoMaxY, 1); //1 for inverse Y axe |
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{$this->mszHTMLForm}.CursorPos_{$axis}.value = dfGeoPos; |
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} |
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} |
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EOT; |
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$aReturn[$szJsFunctionName] = $szFunction; |
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$szJsFunctionName = "WidgetPix2Geo"; |
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$szFunction = <<<EOT |
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/** |
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* {$szJsFunctionName} |
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* Utility function to convert from pixel to georef coordinates. |
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* Used in Cursor Postion widget. |
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*/ |
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function {$szJsFunctionName}(nPixPos, dfPixMin, dfPixMax, dfGeoMin, dfGeoMax, nInversePix) |
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{ |
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dfWidthGeo = dfGeoMax - dfGeoMin; |
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dfWidthPix = dfPixMax - dfPixMin; |
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dfPixToGeo = dfWidthGeo / dfWidthPix; |
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if (Math.abs(dfPixToGeo) < 1) |
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dNbDecimal = Math.abs(Math.log(dfPixToGeo))/Math.log(10)+1; |
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else |
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dNbDecimal = 0; |
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if (nInversePix == 0) |
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{ |
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dfDeltaPix = nPixPos - dfPixMin; |
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} |
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else |
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{ |
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dfDeltaPix = dfPixMax - nPixPos; |
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} |
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dfDeltaGeo = dfDeltaPix * dfPixToGeo; |
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dfPosGeo = new String(new Number(dfGeoMin) + new Number(dfDeltaGeo)); |
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aPosGeo = dfPosGeo.split("."); |
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if (dNbDecimal > 0 && aPosGeo.length == 2) |
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{ |
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dfPosGeo = aPosGeo[0]+"."+aPosGeo[1].substr(0, dNbDecimal); |
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} |
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else |
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{ |
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dfPosGeo = aPosGeo[0]; |
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} |
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szttt = ""+"pixelpos = "+nPixPos+" result ="+dfPosGeo; |
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//alert(szttt); |
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return dfPosGeo; |
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} |
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EOT; |
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$aReturn[$szJsFunctionName] = $szFunction; |
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return $aReturn; |
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} |
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/** |
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* GetJavascriptOnMouseMoveFunctions |
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* |
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* Returns functions to be called on mouse mouve event. |
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*/ |
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function GetJavascriptOnMouseMoveFunctions() |
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{ |
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$aReturn = array(); |
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$axis = $this->mszAxis; |
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$szJsFunctionName = "Cursor".$axis."MouseMoved"; |
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$szFunction = "$szJsFunctionName(e);\n"; |
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$aReturn[$szJsFunctionName] = $szFunction; |
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return $aReturn; |
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} |
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|
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/** |
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* DrawPublish |
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* |
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* Return the HTML code using the name in the map file and the |
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* parameters of the CWC tag. |
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*/ |
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function DrawPublish() |
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{ |
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if (!$this->mbVisible) |
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return "<!-- CursorPosition widget hidden -->"; |
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$nSize = $this->mnDefaultTextFieldSize; |
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if (isset($this->maParams["TextFieldSize"])) |
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$nSize = strtoupper($this->maParams["TextFieldSize"]); |
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$szClass = ""; |
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if ( strlen($this->mszClass) > 0 ) |
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$szClass = " CLASS=\"$this->mszClass\""; |
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$szStyle = ""; |
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if ( strlen($this->mszStyle) > 0 ) |
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$szStyle = " STYLE=\"$this->mszStyle\""; |
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$szContents="<input$szClass$szStyle type=\"text\" name=\"CursorPos_". |
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$this->mszAxis."\" id=\"CursorPos_". |
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$this->mszAxis."\" value=\"\" size=\"$nSize\" readonly>"; |
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return $this->moLabel->DrawPublish( $szContents ); |
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} |
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} |
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?> |
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