Android Pop Up Window Width Limit

I'm attempting to create a modal pop up window for android. Everything appears to be working except the width seems to be limited. Using the android 3.0 emulator with a screen size of 1280X800, the maximum size I can get the width to go is 580.

Here is what I am doing:

I created a themes.xml in platform/android/res/values

<style name="myDialog">
    <item name="android:windowFrame">@null</item> 
    <item name="android:windowIsFloating">true</item> 
    <item name="android:windowContentOverlay">@null</item> 
    <item name="android:windowSoftInputMode">stateUnspecified|adjustPan</item> 
    <item name="android:windowBackground">@android:color/transparent</item> 
    <item name="android:windowIsTranslucent">true</item>
    <item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item>
    <item name="android:windowNoTitle">true</item> 
    <item name="android:backgroundDimEnabled">true</item> 
 </style>

In tiapp.xml, I specify that the TiTranslucentActivity use the theme, so when I specify an opacity on the window, it will use the specified theme:

<android xmlns:android="http://schemas.android.com/apk/res/android">
        <manifest>
            <application>
                <activity
                    android:configChanges="keyboardHidden|orientation"
                    android:name="org.appcelerator.titanium.TiTranslucentActivity" android:theme="@style/myDialog"/>
            </application>
        </manifest>
    </android>

Note, I also tried this with TiModalActivity and modal:true, but in that case, I get a black background and the width is still limited.

I then create the window with a view:

var myDialog = Titanium.UI.createWindow({
        title: 'My dialog',
        width: '800dp',
        height: '600dp',
        backgroundColor:'#336699',
        borderColor: '#E9FB00',
        opacity: 1.0
    });
 
    var testView =  Titanium.UI.createView({  
        backgroundColor:'#fff',
        borderWidth:2,
        borderColor: '#3914AF',
        width: '800dp',
        height: '600dp'
    });
 
    myDialog.add(testView);

Then as part of a button click on the main window, I open the window:

myDialog.open(
            );

The window opens correctly, however no matter what I specify for the width of the view or window, it never goes beyond 580 px. Note, I can adjust the height and that seems to work correctly.