//Pointui C Script

/*

	COPYRIGHT

	Copyright (c) 2008-2009 Pointui Pty Ltd, All Rights Reserved.

	ABN: 80 129 073 678

	This software is provided under license by Pointui Pty Ltd, and use thereof

	is subject to the licensing terms. Distribution of this software is on an 

	"AS IS" basis, WITHOUT WARRANTY OF ANY KIND.

	This software is protected by Australian and international law. 

	This software program may not be reproduced, transmitted, or disclosed to

	third parties, in whole or in part, in any form or by any manner, electronic 

	or mechanical, without the express written consent of Pointui Pty Ltd, except

	to the extent provided for by applicable license

*/

#region Applet

class SlideshowApplet : Applet

{

	//data table to store the list of files in the folder being displayed

	DataTable tblFiles;

	//timer that is used to swap to the next image

	Timer ssUpdateTimer;

	//images for the slideshow borders

	Image imgTop, imgLeft, imgRight, imgBottom, imgBottomFade;

	//current image being displayed

	Image imgScreenshot;

	//buttons for navigating

	Button btnPlayPause, btnSettings, btnNext, btnPrev;

	int x, y, r, w, h;

	int displayX, displayY, displayHeight, displayWidth;

	String PictureFolderPath;

	int PictureCount;

	int CurrentPicture;

	int ssInterval;

	bool ControlsAreBright;

	void ShowNextPicture(int offsetFromCurrent)

	{

		//increment the picture index

		CurrentPicture += offsetFromCurrent;

		//is this after the last one?

		if (CurrentPicture >= PictureCount)

		{

			//go back to start

			CurrentPicture = 0;

		}

		//is this before the first one

		if (CurrentPicture < 0)

		{

			//wrap around to end

			CurrentPicture = PictureCount - 1;

		}

		//try move to next image in list of files

		bool anyMore;

		anyMore = tblFiles.MoveTo(CurrentPicture);

		if (anyMore)

		{

			//was another image, so get the filename

			String s;

			tblFiles.GetValue("Filename", s);

			//show this picture

			ShowPicture(s);

		} else {

			//no pictures in this folder, so show default image

			ShowPicture("Default.Image.jpg");

		}

	}

	//event handler to swap to the next picture

	void ssUpdateTimer_OnTimer()

	{

		ShowNextPicture(1);

	}

	//click handler for when picture being shown is clicked

	void imgScreenshot_OnClick()

	{

		//stop cycling through pictures

		ssUpdateTimer.Stop();

		//fade back in the navigation controls

		ControlsFade(false);

	}

	//click handler for the settings button

	void btnSettings_OnClick()

	{

		//show the screen to select a different folder

		ScreenSelectFolder s;

		s.OnSelectFolder = ScreenSelectFolder_OnSelectFolder;

		FlowStack.Branch(s);

	}

	//handler for when folder selected on the ScreenSelectFolder

	void ScreenSelectFolder_OnSelectFolder(String FolderPath)

	{

		String path;

		//save the path in the Attributes collection of this applet

		Attributes.Add("FolderPath", FolderPath);

		//save the folder path to file so if the user restarts their device it will still be the same

		File.Write("Settings.txt", Attributes);

		//get files in the folder

		Path.GetFiles(FolderPath, tblFiles);

		//make sure list doesn't include any directories

		Path.RemoveDirectories(tblFiles);

		//how many pictures?

		PictureCount = tblFiles.GetCount();

		CurrentPicture = -1;

		ShowNextPicture(1);

	}

	//click handler for the play button

	void btnPlayPause_OnClick()

	{

		//start the picture cycle timer

		ssUpdateTimer.StartSecondsTimer(ssInterval);

		//hide the controls

		ControlsFade(true);

	}

	//handler for the next picture button

	void btnNext_OnClick()

	{

		//ensure auto cycling is stopped

		ssUpdateTimer.Stop();

		//show next picture

		ShowNextPicture(1);

	}

	//click handler for previous button

	void btnPrev_OnClick()

	{

		//ensure auto cycling is stopped

		ssUpdateTimer.Stop();

		//show previous picture

		ShowNextPicture(-1);

	}

	//shows the picture specified in path

	void ShowPicture(String path)

	{

		//load the image and force it to the required dimensions

		imgScreenshot.Surface.LoadFromFile(path, displayWidth, displayHeight);

		//did it load?

		if (imgScreenshot.Surface.GetWidth() <= 0)

		{

			//no, so use the default image

			imgScreenshot.Surface.LoadFromFile("Default.Image.jpg");

		}

		//make sure the image control is positioned correctly

		imgScreenshot.SetBounds(displayX, displayY);

		//and make sure screen is forced to update

		FlagScreenChanged();

	}

	//show or hide the navigation buttons

	void ControlsFade(bool DirectionUp)

	{

		int Start, Finish;

		if (DirectionUp)

		{

			if (ControlsAreBright == false)

			{

				return;

			}

			ControlsAreBright = false;

			Start = 100;

			Finish = 10;

		}

		else

		{

			if (ControlsAreBright == true)

			{

				return;

			}

			ControlsAreBright = true;

			Start = 10;

			Finish = 100;

		}

		//clear any previous animations that had been applied to these controls

		//because don't want parallel animations running and fighting each other

		btnPrev.AnimateClear();

		btnPlayPause.AnimateClear();

		btnSettings.AnimateClear();

		btnNext.AnimateClear();

		//fade the controls either in or out based on the Start/Finish values

		btnPrev.AnimateFade(Start, Finish, 5);

		btnPlayPause.AnimateFade(Start, Finish, 5, 1);

		btnSettings.AnimateFade(Start, Finish, 5, 2);

		btnNext.AnimateFade(Start, Finish, 5, 3);

	}

	//this method is called once for the Applet when it is being initially loaded

	//and is where the controls for the applet are initialised, settings fetched from file etc

	void Load()

	{

		x = 0;

		y = 0;

		w = GetWidth();

		r = x + w;

		//frame controls that will be displayed around the picture

		y = 0;

		imgTop.Surface.LoadFromFile("Frame.Top.jif");

		Controls.Add(imgTop);

		imgTop.SetBounds(x, y);

		y += imgTop.GetHeight();

		imgLeft.Surface.LoadFromFile("Frame.Left.jif");

		Controls.Add(imgLeft);

		imgLeft.SetBounds(x, y);

		imgRight.Surface.LoadFromFile("Frame.Right.jif");

		Controls.Add(imgRight);

		r -= imgRight.GetWidth();

		imgRight.SetBounds(r, y);

		y += imgLeft.GetHeight();

		imgBottom.Surface.LoadFromFile("Frame.Bottom.jif");

		Controls.Add(imgBottom);

		imgBottom.SetBounds(x, y);

		//determine the display area limits - how much space is there to show the slideshow pictures?

		displayHeight = GetHeight();

		displayHeight -= ((imgTop.GetHeight() + imgBottom.GetHeight()) / 2);

		displayWidth = GetWidth();

		displayWidth -= ((imgLeft.GetWidth() + imgRight.GetWidth()) / 2);

		displayX = imgLeft.GetWidth() / 2;

		displayY = imgTop.GetHeight() / 2;

		//load the default picture

		imgScreenshot.Surface.LoadFromFile("Default.Image.jpg", displayWidth, displayHeight);

		Controls.Add(imgScreenshot);

		imgScreenshot.SendToBack();

		imgScreenshot.SetBounds(displayX, displayY);

		imgScreenshot.SetTabStop(true);

		imgScreenshot.OnClick = imgScreenshot_OnClick;

		x = 0;

		//init the buttons

		//load the images for normal and selected states

		btnPrev.ImageSelected.LoadFromFile("Button.Previous.Selected.jif");

		btnPrev.Image.LoadFromFile("Button.Previous.jif");

		//add this button to be a direct child of the applet

		Controls.Add(btnPrev);

		//position it

		y = GetHeight() - btnPrev.GetHeight();

		btnPrev.SetBounds(x, y);

		//provide an OnClick event handler so can respond to when the user clicks the button

		btnPrev.OnClick = btnPrev_OnClick;

		x += btnPrev.GetWidth();

		btnPlayPause.ImageSelected.LoadFromFile("Button.Right.Arrow.Selected.jif");

		btnPlayPause.Image.LoadFromFile("Button.Right.Arrow.jif");

		Controls.Add(btnPlayPause);

		btnPlayPause.SetBounds(x, y);

		x += btnPlayPause.GetWidth();

		btnPlayPause.OnClick = btnPlayPause_OnClick;

		btnSettings.ImageSelected.LoadFromFile("Button.Settings.Selected.jif");

		btnSettings.Image.LoadFromFile("Button.Settings.jif");

		Controls.Add(btnSettings);

		btnSettings.SetBounds(x, y);

		x += btnSettings.GetWidth();

		btnSettings.OnClick = btnSettings_OnClick;

		btnNext.ImageSelected.LoadFromFile("Button.Next.Selected.jif");

		btnNext.Image.LoadFromFile("Button.Next.jif");

		Controls.Add(btnNext);

		btnNext.SetBounds(x, y);

		x += btnNext.GetWidth();

		btnNext.OnClick = btnNext_OnClick;

		//when playing go to next picture every 3 seconds

		ssInterval = 3;

		//set the event handler for OnTimer

		ssUpdateTimer.OnTimer = ssUpdateTimer_OnTimer;

		ControlsAreBright = true;

		PictureCount = 0;

		//load the settings into the Attributes collection

		File.Read("Settings.txt", Attributes);

		//read the last folder that was being viewed

		PictureFolderPath = Attributes.Item("FolderPath");

		//is there are path previously saved?

		if (PictureFolderPath.GetLength() > 0)

		{

			//yes, so make it load right now

			ScreenSelectFolder_OnSelectFolder(PictureFolderPath);

		}

	}

	//this method is called when the applet loses focus for some reason such as the user

	//sliding to another applet, or going off to another screen after having this applet visible

	void Deactivated()

	{

		//stop the update timer - no point loading more images if the user can't see them

		ssUpdateTimer.Stop();

		//show controls again

		ControlsFade(false);

	}

}

#endregion 

#region Screens

//screen that allows browsing through file system to select a folder

class ScreenSelectFolder : FileExplorerScreen

{

	//title of the screen

	Label lblTitle;

	//initialize the screen

	void Load()

	{

		//init the title label

		Controls.Add(lblTitle);

		SetTitlePosition(lblTitle);

		//set the properties for this FileExplorerScreen

		SetBasePath("\\");

		SetDisplayFileExt(true);

		SetMode("SelectFolder");

	}

	//event to raise when the user selects a folder

	Event OnSelectFolder;

	//this method is called by the FileExplorerScreen when the user selects a folder

	void FolderSelected(String filename)

	{

		//raise the event

		OnSelectFolder(filename);

		//return from the current screen

		FlowStack.Return();

	}

	//this method is called by the FileExplorerScreen when the user navigates to each folder

	//while trying to select one

	void FolderChanged(String folder)

	{

		//get just the current folder name from the full path

		String s;

		s = Path.GetFilename(folder);

		//are we at root?

		if (s.GetLength() <= 0)

		{

			s = "Choose Slideshow Folder";

		}

		//set the screen title

		lblTitle.SetText(s);

	}

}

#endregion