Titanium User Case takeScreenShot

// All source code open Source Copyright 2011
// Code submitted by thewarpedcoder .... trevor@thewarpedcoder.net

/* The purpose of the user cases is to define instances of issues / bugs
 * with the applications I code.
 *
 * This user case uses nameSpaces as this is how the main application works,
 * and also opens and closes windows as required. It does not have a window
 * stack.
 */

Ti.UI.setBackgroundColor('#ffffff');

// Define the NameSpaces
var mainNS 											= 	{};
	mainNS.event									=	{};
	mainNS.view										=	{};
	mainNS.tool										=	{};
	mainNS.model									=	{};

(function()
{
	var mobWidth									=	Ti.Platform.displayCaps.platformWidth;
	var mobHeight									=	Ti.Platform.displayCaps.platformHeight;
	var mobDiv										=	1;
	var globalCurrScreenImage						=	null;

	if (mobWidth < 480)
	{
		mobDiv										=	2;
	}
	else if (mobWidth < 640)
	{
		mobDiv										=	1.5;
	};
	if (Ti.Platform.osname == 'android')
	{
		androidPlatform								=	true;
	}
	// Global variable definitions.

	var globalCurrScreen							=	null;
	var globalPreviousScreen						=	null;
	var globalBackButt								=	[];

	var initiateFlag								=	true;
	var iPos										=	0;

	// Functions
	function addBackScreen(inFunction)
	{
		var tmpBackIn								=	({INFUNC: inFunction});

		globalBackButt.push(tmpBackIn);
	};
	function popGlobalBackButt()
	{
		globalBackButt.pop();
	};
	// Events ....

	mainNS.event.closeTheApp						=	function(evt)
	{
		if (Ti.Platform.osname == 'android')
		{
			globalPreviousScreen					=	globalCurrScreen;
			mainNS.view.closeScreenWindow().open();
		}
	};
	mainNS.event.closeTheAppFrig					=	function(evt)
	{
		globalPreviousScreen.close();
		globalCurrScreen.close();
	}
	mainNS.event.loadBackScreenHandler				=	function(evt)
	{
		iPos 										=	((globalBackButt.length - 2) < 0) ? 0 : (globalBackButt.length - 2);

		if (globalBackButt.length <= 1)
		{
			mainNS.event.closeTheApp({});
		}
		else
		{
			if (iPos >= 0)
			{
				var tmp1 = globalBackButt[iPos].INFUNC;

				if (tmp1)
				{
					if(globalBackButt.length > 1)
					{
						popGlobalBackButt();
					};
					eval(tmp1 + '({BACK: ' + "true" + '});');
				}
			};
		};
	};
	mainNS.event.loadHomeScreen						=	function(evt)
	{
		globalPreviousScreen 						= 	globalCurrScreen;

		if (!evt.BACK)
		{
			addBackScreen("mainNS.event.loadHomeScreen");
		}
		mainNS.view.loadHomeScreenWindow().open();

		if (!initiateFlag)
		{
			globalPreviousScreen.close();
			initiateFlag							=	false;
		}
	};
	mainNS.event.loadCameraScreen					=	function(evt)
	{
		globalPreviousScreen 						= 	globalCurrScreen;

		if (!evt.BACK)
		{
			addBackScreen("mainNS.event.loadCameraScreen");
		}
		mainNS.view.loadCameraScreenWindow().open();

		globalPreviousScreen.close();

		initiateFlag								=	false;

		mainNS.view.showTheCamera();
	};
	mainNS.event.loadDisplayCameraScreenShotWin		=	function(evt)
	{
		globalPreviousScreen 						= 	globalCurrScreen;

		if (!evt.BACK)
		{
			addBackScreen("mainNS.event.loadDisplayCameraScreenShotWin");
		}
		mainNS.view.createDisplayScreenShotWindow().open();

		globalPreviousScreen.close();
	};
	// Screen Tools

	mainNS.tool.appNavigationBar					=	function(evt)
	{
		var navigationBar 							= 	Ti.UI.createView
		({
			bottom: 									0,
			height: 									70 / mobDiv,
			right:										0,
			backgroundColor: 							"#000000",
			opacity:									0.75
		});
		var tmpHColor								=	(evt.SCREEN == 'HOME')      ? "#FF0000" : "#FFFFFF";
		var tmpCColor								=	(evt.SCREEN == 'CAMERA')    ? "#FF0000" : "#FFFFFF";
		var tmpBColor								=	(globalBackButt.length > 1) ? "#FFFFFF" : "#444444";

		var navBarHomeBtn 							= 	Ti.UI.createView
		({
			left:										5,
			width: 										90 / mobDiv,
			height: 									70 / mobDiv,
			top: 										0,
			backgroundColor: 							"#000000",
			borderColor: 								"#FFFFFF",
			borderWidth: 								2
		});
		var navBarHomeBtnText 						= 	Ti.UI.createLabel
		({
			width: 										90 / mobDiv,
			text: 										"HOME",
			color: 										tmpHColor,
			textAlign: 									'center',
			font: 										{fontSize: 		10}
		});
		navBarHomeBtn.add(navBarHomeBtnText);
		navigationBar.add(navBarHomeBtn);

		var navBarCameraBtn							= 	Ti.UI.createView
		({
			left:										100 / mobDiv,
			width: 										90  / mobDiv,
			height: 									70  / mobDiv,
			top: 										0,
			backgroundColor: 							"#000000",
			borderColor: 								"#FFFFFF",
			borderWidth: 								2
		});
		var navBarCameraBtnText 					= 	Ti.UI.createLabel
		({
			width: 										90 / mobDiv,
			text: 										"CAMERA",
			color: 										tmpCColor,
			textAlign: 									'center',
			font: 										{fontSize: 		10}
		});
		navBarCameraBtn.add(navBarCameraBtnText);
		navigationBar.add(navBarCameraBtn);

		var navBarBackBtn							= 	Ti.UI.createView
		({
			left:										200 / mobDiv,
			width: 										90  / mobDiv,
			height: 									70  / mobDiv,
			top: 										0,
			backgroundColor: 							"#000000",
			borderColor: 								"#FFFFFF",
			borderWidth: 								2
		});
		var navBarBackBtnText 						= 	Ti.UI.createLabel
		({
			width: 										90 / mobDiv,
			text: 										"BACK",
			color: 										tmpBColor,
			textAlign: 									'center',
			font: 										{fontSize: 		10}
		});
		navBarBackBtn.add(navBarBackBtnText);
		navigationBar.add(navBarBackBtn);

		var navBarPicBtn							= 	Ti.UI.createView
		({
			right:										220 / mobDiv,
			width: 										90  / mobDiv,
			height: 									70  / mobDiv,
			top: 										0,
			backgroundColor: 							"#000000",
			borderColor: 								"#FFFFFF",
			borderWidth: 								2
		});
		var navBarPicBtnText 						= 	Ti.UI.createLabel
		({
			width: 										90 / mobDiv,
			text: 										"TAKE PIC",
			color: 										"#FFFFFF",
			textAlign: 									'center',
			font: 										{fontSize: 		10}
		});
		navBarPicBtn.add(navBarPicBtnText);
		navigationBar.add(navBarPicBtn);

		var navBarCloseBtn							= 	Ti.UI.createView
		({
			right:										10 / mobDiv,
			width: 										90 / mobDiv,
			height: 									70 / mobDiv,
			top: 										0,
			backgroundColor: 							"#000000",
			borderColor: 								"#FFFFFF",
			borderWidth: 								2
		});
		var navBarCloseBtnText 						= 	Ti.UI.createLabel
		({
			width: 										90 / mobDiv,
			text: 										"CLOSE",
			color: 										"#FFFFFF",
			textAlign: 									'center',
			font: 										{fontSize: 		10}
		});
		navBarCloseBtn.add(navBarCloseBtnText);
		navigationBar.add(navBarCloseBtn);

		if (evt.SCREEN != 'HOME')      {navBarHomeBtn.addEventListener('click',   function() {mainNS.event.loadHomeScreen({});} );        };
		if (evt.SCREEN != 'CAMERA')    {navBarCameraBtn.addEventListener('click', function() {mainNS.event.loadCameraScreen({});} );      };
		if (globalBackButt.length > 1) {navBarBackBtn.addEventListener('click',   function() {mainNS.event.loadBackScreenHandler({});} ); };

		navBarPicBtn.addEventListener('click', function()
		{
			Ti.Media.takeScreenshot(function(event)
			{
				globalCurrScreenImage 			=	event.media;

				mainNS.event.loadDisplayCameraScreenShotWin({});
			});
		});
		navBarCloseBtn.addEventListener('click',   function() {mainNS.event.closeTheApp({})} );

		return navigationBar;
	};
	// Screens ....

	mainNS.view.loadHomeScreenWindow 				= 	function()
	{
		var mainMenuWin 							= 	Ti.UI.createWindow
		({
			navBarHidden:								true,
			backgroundColor: 							"#FFFFFF"
		});
		var mainMenuWinLabel 						= 	Ti.UI.createLabel
		({
			width: 										200,
			text: 										"HOME SCREEN",
			color: 										"#000000",
			textAlign: 									'center',
			font: 										{fontSize: 		30}
		});
		mainMenuWin.add(mainMenuWinLabel);

		globalCurrScreen							=	mainMenuWin;

		var navBarData								=	{SCREEN: "HOME"};

		var navBar									=	mainNS.tool.appNavigationBar(navBarData);

		mainMenuWin.add(navBar);

		if (Ti.Platform.osname == 'android')
		{
			mainMenuWin.addEventListener('android:back', function() {mainNS.event.loadBackScreenHandler({});} );
		};
		return mainMenuWin;
	};
	mainNS.view.loadCameraScreenWindow 				= 	function()
	{
		var cameraScreenWin 						= 	Ti.UI.createWindow
		({
			navBarHidden:								true,
			backgroundColor: 							"#FFFFFF"
		});
		globalCurrScreen							=	cameraScreenWin;

		if (Ti.Platform.osname == 'android')
		{
			cameraScreenWin.addEventListener('android:back', function() {mainNS.event.loadBackScreenHandler({});} );
		};
		cameraScreenWin.addEventListener('close', function() { Ti.Media.hideCamera(); });

		return cameraScreenWin;
	};
	mainNS.view.showTheCamera						=	function()
	{
		var displayVoucherOverlayView 				= 	Ti.UI.createView
		({
			top:										0,
			bottom:										0,
			left:										0,
			right:										0,
			opacity:									0.75
		});
		var navBarData								=	{SCREEN: "CAMERA"};

		var navBar									=	mainNS.tool.appNavigationBar(navBarData);

		displayVoucherOverlayView.add(navBar);

		var cameraTransform 						= 	Ti.UI.create2DMatrix();
		cameraTransform 							= 	cameraTransform.scale(2);

		Ti.Media.showCamera
		({
		    success:									function(event) {},
		    cancel:										function() {},
		    error:										function(error)
			{
		        if (error.code == Ti.Media.NO_CAMERA)
				{
					alert("NO CAMERA");
		        }
				else
				{
					alert("CAMERA ERROR");
		        }
		    },
			mediaTypes:									[Ti.Media.MEDIA_TYPE_VIDEO,Ti.Media.MEDIA_TYPE_PHOTO],
		    showControls:								false,
		    autohide:									false,
		    transform:									cameraTransform,
		    overlay:									displayVoucherOverlayView
		});
	};
	mainNS.view.createDisplayScreenShotWindow		= 	function()
	{
		var displayScreenShotWin 					= 	Ti.UI.createWindow
		({
			navBarHidden:								true,
			backgroundColor: 							"#FFFFFF"
		});
		var displayScreenShotImage					=	Ti.UI.createImageView
		({
			top:										75,
			bottom:										75,
			image:										globalCurrScreenImage
		});
		displayScreenShotWin.add(displayScreenShotImage);

		globalCurrScreen							=	displayScreenShotWin;

		var navBarData								=	{SCREEN: "HOME"};

		var navBar									=	mainNS.tool.appNavigationBar(navBarData);

		displayScreenShotWin.add(navBar);

		if (Ti.Platform.osname == 'android')
		{
			displayScreenShotWin.addEventListener('android:back', function() {mainNS.event.createDisplayScreenShotWindow({});} );
		};
		return displayScreenShotWin;
	};
	mainNS.view.closeScreenWindow					=	function()
	{
		var closeScreenWin 							= 	Ti.UI.createWindow
		({
			navBarHidden:								true,
			exitOnClose:								true
		});
		globalCurrScreen							=	closeScreenWin;

		closeScreenWin.addEventListener('open', function() {mainNS.event.closeTheAppFrig({});} );

		return closeScreenWin;
	};
	// Initial Launch
	mainNS.event.loadHomeScreen({});

})();