function welcome2LTPDA(varargin)
% Introductory window for the LTPDA Toolbox.
%    
% The animated GIF code is taken from 'gifplayer.m' by
%     Vihang Patil, Oct 2006
%     Copyright 2006-2007 Vihang Patil
%     Email: vihang_patil@yahoo.com
%     Created: 17th Oct 2006
%  $Id: welcome2LTPDA.m,v 1.2 2009/01/23 12:40:51 nicola Exp $

global timePeriod

timePeriod = 0;
screenSize = get(0,'ScreenSize');

try
   guiName = varargin{1}; guiSize = varargin{2};
catch
   guiName = ''; guiSize = [1 1 450 500];
end

introSize = [(screenSize(3)-guiSize(3))/2 , (screenSize(4)-guiSize(4))/2 , guiSize(3) , guiSize(4)];
introFig = figure('Position',introSize,'Resize','off','Name',guiName,'NumberTitle','off','Toolbar','none','Menubar','none','Tag','LTPDAGUI');


logoSize = [303,303];
introPosition = [(introSize(3)-logoSize(1))/2 , (introSize(4)-logoSize(2))/2 , logoSize];
logo = axes('Parent',introFig,'Units','pixels','Position',introPosition);
image(imread('ltp.jpg'),'Parent',logo,'AlphaData',imread('ltpalpha.gif'));
axis(logo,'off'); axis(logo,'square');
set(logo,'HandleVisibility','callback');

uicontrol('Parent',introFig,'BackgroundColor',[1 1 1],'HorizontalAlignment','center','Position',[0  introSize(4)-50  introSize(3)  25],'String','Welcome to the LTP','FontName','Times New Roman','FontSize',18,'Visible','on','Style','text');
uicontrol('Parent',introFig,'BackgroundColor',[1 1 1],'HorizontalAlignment','center','Position',[0  introSize(4)-75  introSize(3)  25],'String','Data Analysis Toolbox','FontName','Times New Roman','FontSize',18,'Visible','on','Style','text');

loading = uicontrol('Parent',introFig,'BackgroundColor',[1 1 1],'HorizontalAlignment','left','Position',[(introSize(3)-50)/2  15  70  25],'String','loading','FontName','Times New Roman','FontSize',10,'fontAngle','italic','Visible','on','Style','text','Tag','loading');

    gif_image = 'loading.gif';
    delay_length = 0.1;
    gifSize = [23 23];
    axes('Parent',introFig,'Units','pixels','Position',[(introSize(3)-gifSize(1))/2 50 gifSize]);
    [handles.im,map] = imread(gif_image,'frames','all');
    handles.len = size(handles.im,4);
        handles.h1 = image(handles.im(:,:,:,1));
        colormap(map);
        axis normal;
        axis off;
    handles.guifig = gcf;
    handles.count = 1;
    handles.tmr = timer('TimerFcn', {@TmrFcn,handles.guifig},'BusyMode','Queue','ExecutionMode','FixedRate','Period',delay_length);
    guidata(handles.guifig, handles);
    start(handles.tmr); %starts Timer
guidata(handles.guifig, handles);

set(loading,'DeleteFcn',{@DeleteFunction,handles.guifig});


function TmrFcn(src,event,handles)
handles = guidata(handles);
set(handles.h1,'CData',handles.im(:,:,:,handles.count)); %update the frame in the axis
handles.count = handles.count + 1; %increment to next frame

if handles.count > handles.len %if the last frame is achieved intialise to first frame
    handles.count = 1;
end
guidata(handles.guifig, handles);

loadingStr = get(findobj('Tag','loading'),'String');
switch loadingStr
   case 'loading.....', loadingStr = 'loading';
   otherwise, loadingStr = [loadingStr,'.'];
end

if timePeriod == 2, set(findobj('Tag','loading'),'String',loadingStr); timePeriod = 0;
else timePeriod = timePeriod +1;
end
end


function DeleteFunction(src,event,handles)
handles = guidata(handles);
clear global timePeriod
try stop(handles.tmr);delete(handles.tmr); catch end
end

end