templates/standalone/cordovalib/OrientationHelper.cs

/*  
	Licensed under the Apache License, Version 2.0 (the "License");
	you may not use this file except in compliance with the License.
	You may obtain a copy of the License at
	
	http://www.apache.org/licenses/LICENSE-2.0
	
	Unless required by applicable law or agreed to in writing, software
	distributed under the License is distributed on an "AS IS" BASIS,
	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	See the License for the specific language governing permissions and
	limitations under the License.
*/

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;

namespace WPCordovaClassLib.Cordova
{
    public class OrientationHelper
    {
        protected WebBrowser gapBrowser;
        protected PhoneApplicationPage page;
        // private PageOrientation CurrentOrientation = PageOrientation.PortraitUp;
        //private PageOrientation[] SupportedOrientations; // TODO:

        public OrientationHelper(WebBrowser gapBrowser, PhoneApplicationPage gapPage)
        {
            this.gapBrowser = gapBrowser;
            page = gapPage;

            page.OrientationChanged += new EventHandler<OrientationChangedEventArgs>(page_OrientationChanged);
            gapBrowser.LoadCompleted += new System.Windows.Navigation.LoadCompletedEventHandler(gapBrowser_LoadCompleted);


        }

        void gapBrowser_LoadCompleted(object sender, System.Windows.Navigation.NavigationEventArgs e)
        {
            int i = 0;

            switch (this.page.Orientation)
            {
                case PageOrientation.Portrait: // intentional fall through
                case PageOrientation.PortraitUp:
                    i = 0;
                    break;
                case PageOrientation.PortraitDown:
                    i = 180;
                    break;
                case PageOrientation.Landscape: // intentional fall through
                case PageOrientation.LandscapeLeft:
                    i = -90;
                    break;
                case PageOrientation.LandscapeRight:
                    i = 90;
                    break;
            }
            // Cordova.fireEvent('orientationchange', window);
            string jsCallback = String.Format("window.orientation = {0};", i);

            try
            {
                gapBrowser.InvokeScript("execScript", jsCallback);
            }
            catch (Exception)
            {
            }
        }

        void page_OrientationChanged(object sender, OrientationChangedEventArgs e)
        {
            int i = 0;

            switch (e.Orientation)
            {
                case PageOrientation.Portrait: // intentional fall through
                case PageOrientation.PortraitUp:
                    i = 0;
                    break;
                case PageOrientation.PortraitDown:
                    i = 180;
                    break;
                case PageOrientation.Landscape: // intentional fall through
                case PageOrientation.LandscapeLeft:
                    i = -90;
                    break;
                case PageOrientation.LandscapeRight:
                    i = 90;
                    break;
            }
            // Cordova.fireEvent('orientationchange', window);
            string jsCallback = String.Format("window.orientation = {0};", i);

            try
            {

                gapBrowser.InvokeScript("execScript", jsCallback);

                jsCallback = "var evt = document.createEvent('HTMLEvents');";
                jsCallback += "evt.initEvent( 'orientationchange', true, false );";
                jsCallback += "window.dispatchEvent(evt);";
                jsCallback += "if(window.onorientationchange){window.onorientationchange(evt);}";

                gapBrowser.InvokeScript("execScript", jsCallback);
            }
            catch (Exception)
            {
            }
        }

        public void HandleCommand(string commandStr)
        {

        }
    }


}