Air application position on desktop

Question

hi there,
i have an application(air) i want to load in the center of my desktop.
the application has a fixed size.
If i start my application it is not loaded in the center of my screen, the bottom of my application runs out of the screen.
so my question; How to calculate the desktop sizes and set the application on a specific point?
for example top right or bottom left.
Greetz, jacob

Answer 1

Hi,
I did use this:
var mainScreen:Screen = Screen.mainScreen;
var screenBounds:Rectangle = mainScreen.bounds;
this.x =(screenBounds.width - this.width)/2;
this.y =(screenBounds.height - this.height)/2;
But that shifted the custom chrome and modified the widht and height of my application.
I use an application with a custom chrome.
The code i use:
centerapp.mxml
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
    creationComplete="initApp()"
    layout="absolute"
    width="1024"
    height="768"
    paddingRight="0"
    paddingLeft="0"
    visible="false"
    backgroundImage="@Embed('img/decoratieframe.png')"
    applicationComplete="onApplicationComplete();"
    xmlns:localcanvas="*">
    <mx:Style>
        Application
            /* make app window transparent */
            background-color:"";
            background-image:"";
            padding: 0px;
    </mx:Style>    
     <mx:Script>
          <![CDATA[
               import mx.containers.Canvas;
               import flash.display.Screen;
          // stuff for the application dragg
               public var shadowFilter:DropShadowFilter;
            private var baseBgColor:Number = 0x888888;
            private function initApp():void
                // adds mouseDown listeners so a click and drag on the background or the
                // display area lets you move the window
                this.bgBox.addEventListener(MouseEvent.MOUSE_DOWN, onMouseOmlaag);
                // creates a generic drop shadow to use on components that don't accept CSS shadow styles
                shadowFilter = new DropShadowFilter();
                shadowFilter.color = 0x000000;
                shadowFilter.alpha = 0.4;
                shadowFilter.blurX = 5;
                shadowFilter.blurY = 5;
                shadowFilter.distance = 5;
                // 'external' shadows
                addShadow(this.bgBox);
                // retrieves the current background color to use as a base for
                // color calculations; this way you could use a CSS stylesheet
                // to change the base background color in the future.
                var baseColor:* = this.bgBox.getStyle("backgroundColor");
                if(!isNaN(baseColor) && baseColor != null)
                    this.baseBgColor = baseColor as Number;
             * Adds a standard drop shadow to a display object.
            public function addShadow(comp:DisplayObject):void
                comp.filters = [this.shadowFilter];
             * Responds to a mouseDown event by starting an operating-system move sequence.
            private function onMouseOmlaag(evt:MouseEvent):void
                stage.nativeWindow.startMove();
             * Responds to a move event. (Currently not in use)
            public function onWindowMove(event:Event):void
                trace("Window is moving...");
             * Responds to a window close event after the window's close button has been clicked.
            private function onClose(evt:MouseEvent):void
                stage.nativeWindow.close();
             * Responds to a window minimize event, after the minimize button has been clicked
            private function onMinimize(evt:MouseEvent):void
                stage.nativeWindow.minimize();
            private function onApplicationComplete():void
                 var screenwidth:Number=Capabilities.screenResolutionX;
                 var screenheight:Number=Capabilities.screenResolutionY;
                 // 2 lines beneath give different result than
                 this.x=(screenwidth-this.width)/2;
                 this.y=(screenheight-this.height)/2;
                 //this 2 lines.    
                 //this.x=Capabilities.screenResolutionX-(this.width/2);
                 //this.y=Capabilities.screenResolutionY-(this.height/2);
                 //var mainScreen:Screen = Screen.mainScreen;
                 //var screenBounds:Rectangle = mainScreen.bounds;
                 //this.x =(screenBounds.width - this.width)/2;
                 //this.y =(screenBounds.height - this.height)/2;            
                 this.visible=true;
          ]]>
     </mx:Script>
        <mx:HBox width="908" horizontalGap="0" height="35" id="bgBox" x="58" y="51">     
             <mx:Canvas width="908" height="34">
             <mx:Button id="minimizeBtn"
                 icon="@Embed('img/minimize_icon.png')"
                 horizontalGap="0"
                 width="23.5"
                 height="23.5"
                 click="onMinimize(event)" x="841.5" y="5"/>
             <mx:Button id="closeBtn"
                 icon="@Embed('img/close_icon.png')"
                 width="23.5"
                 height="23.5"
                 click="onClose(event)"  x="869.5" y="5"/>
             </mx:Canvas>
        </mx:HBox>    
</mx:Application>
and the file that goes with that:
centerapp-app.xml
<?xml version="1.0" encoding="UTF-8"?>
<application xmlns="http://ns.adobe.com/air/application/1.0">
     <id>centerapp</id>
     <version>1.0</version>
     <filename>centerapp</filename>
     <name>centerapp</name>
     <installFolder>centerapp</installFolder>
     <programMenuFolder>centerapp</programMenuFolder>
     <description>centerapp</description>
    <copyright>centerapp</copyright>
     <initialWindow>
          <title></title>
          <content>centerapp.swf</content>
          <systemChrome>none</systemChrome>
          <transparent>true</transparent>
          <visible>true</visible>
         <minimizable>true</minimizable>
         <maximizable>false</maximizable>
         <resizable>false</resizable>   
     </initialWindow>
    <fileTypes>
        <fileType>
            <name>adobe.VideoFile</name>
            <extension>avf</extension>
            <description>Adobe Video File</description>
            <contentType>application/vnd.adobe.video-file</contentType>
        </fileType>
    </fileTypes>
</application>
In the folder src i made a folder img for the chrome image and the close and minimize button.