% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% --- Executes on button press in button4.

global g_ADVMXAHandle    

if handles.menuNumber == 0 
    %*---------------------------------------------------*
    %  Start/Stop button was pressed in the main menu.
    %*---------------------------------------------------*
    if strcmpi( get( handles.button3, 'String' ), 'Start' )
        % Initialize the timer object
        t = timer( 'TimerFcn', @timer_Callback, ...
            'StartDelay', 0.0, ...
            'Period', 0.01, ...
            'ExecutionMode', 'fixedRate' );
        
        % Update the GUI data to include the timer handle
        handles.timer = t;
        guidata( handles.advFigure, handles );
        set( t, 'UserData', handles );
        
        % Change start button to stop
        set( handles.button3, 'String', 'Stop' );
        drawnow
        
        % Start the timer
        start( t );
        
    else
        % Stop the timer
        stop( handles.timer );
        delete( handles.timer );
        
        % Change button text back to start
        set( handles.button3, 'String', 'Start' );
        
        % Update the GUI data
        handles.timer = 0;
        guidata( handles.advFigure, handles );
        
    end
    
elseif handles.menuNumber == 1
    %*---------------------------------------------------*
    %  Analog plus button was pressed in the display 
    %  mode selection menu.
    %*---------------------------------------------------*
    % Change mode to analog plus
    handles.displayMode = 1;
    ADV_SetDisplayMode( g_ADVMXAHandle, 1, handles );
    guidata( handles.advFigure, handles );
    
    % Update timer user data
    if handles.timer ~= 0 
        set( handles.timer, 'UserData', handles );
    end
    
    % Switch to the main menu
    ShowMainMenu( handles );

end


function button4_Callback(hObject, eventdata, handles)
% hObject    handle to button4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

global g_ADVMXAHandle

if handles.menuNumber == 0
    % Restart
    ADV_Reset( g_ADVMXAHandle );
    
elseif handles.menuNumber == 1 
    % Change mode to waterfall
    handles.displayMode = 2;
    ADV_SetDisplayMode( g_ADVMXAHandle, 2, handles );
    guidata( handles.advFigure, handles );
    
    % Update timer user data
    if handles.timer ~= 0 
        set( handles.timer, 'UserData', handles );
    end
    
    % Switch to the main menu
    ShowMainMenu( handles );

end


% --- Executes on button press in button5.
function button5_Callback(hObject, eventdata, handles)
% hObject    handle to button5 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

global g_ADVMXAHandle

if handles.menuNumber == 1 
    % Change mode to waterfall
    handles.displayMode = 3;
    ADV_SetDisplayMode( g_ADVMXAHandle, 3, handles );
    guidata( handles.advFigure, handles );
    
    % Update timer user data
    if handles.timer ~= 0 
        set( handles.timer, 'UserData', handles );
    end
    
    % Switch to the main menu
    ShowMainMenu( handles );

end


% --- Executes on button press in button6.
function button6_Callback(hObject, eventdata, handles)
% hObject    handle to button6 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


% --- Executes on button press in button7.
function button7_Callback(hObject, eventdata, handles)
% hObject    handle to button7 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

global g_ADVClosing

if handles.menuNumber == 0 
    % Stop the timer, if it is executing
    if handles.timer ~= 0 
        stop( handles.timer );
        delete( handles.timer );
        g_ADVClosing = 1;
    else
        % Execute termination code
        ADV_Close;

        % Close the figure
        close( handles.advFigure );
        
    end
    
    
elseif handles.menuNumber == 1
    % Return to main menu
    ShowMainMenu( handles );
    
end


%*******************************************************************
% ShowMainMenu
%
% Configures the buttons to display the main menu.
%*******************************************************************
function ShowMainMenu( handles )
% Determine mode button name
switch handles.displayMode
    case 0
        modeName = 'Analog Adv';

    case 1 
        modeName = 'Analog Plus';

    case 2
        modeName = 'Waterfall';

    case 3
        modeName = 'Spectrogram';
end

% Change button names
set( handles.button1, 'Visible', 'off' );
set( handles.button2, 'String', modeName, 'FontWeight', 'normal' );
if handles.timer ~= 0
    if strcmpi( get( handles.timer, 'Running' ), 'off' ) == 1 
        startText = 'Start';
    else
        startText = 'Stop';
    end
else
    startText = 'Start';
end
set( handles.button3, 'Visible', 'on' );
set( handles.button3, 'String', startText, 'FontWeight', 'normal' );
set( handles.button4, 'Visible', 'on' );
set( handles.button4, 'String', 'Restart' );
set( handles.button5, 'Visible', 'off' );
set( handles.button6, 'Visible', 'off' );
set( handles.button7, 'String', 'Exit' );

% Update the menu number
handles.menuNumber = 0;
guidata( handles.advFigure, handles );
drawnow;


%*******************************************************************
% Timer Callback
%
% Executes the code that is required for each iteration of the 
% timer loop.  This callback is used to acquire the data from the 
% MXA and perform the post processing and display functions.
%*******************************************************************
function timer_Callback( hObject, eventdata )

global g_ADVTraceFIFO
global g_ADVXAxis
global g_ADVYAxis 
global g_ADVPersistBuffer
global g_ADVMXAHandle
global g_ADVClosing

% Retrieve the figure handles structure
handles = get( hObject, 'UserData' );

% Acquire data from the MXA
data = MXA_AcquireData( g_ADVMXAHandle );
ADV_DataToBuffer( g_ADVMXAHandle, data );

% Make sure the timer is still running
if isvalid( handles.timer ) == 0
    return;
end

% Update the display
figure( handles.advFigure );
uicontrol( handles.button7 );
if handles.displayMode == 0
    % Analog advanced
    image( g_ADVXAxis, g_ADVYAxis, g_ADVPersistBuffer );
    set( handles.mainAxes, 'YDir', 'normal' );

elseif handles.displayMode == 1
    % Analog plus
    image( g_ADVXAxis, g_ADVYAxis, g_ADVPersistBuffer );
    set( handles.mainAxes, 'YDir', 'normal' );

elseif handles.displayMode == 2
    % Waterfall
    mesh( handles.mainAxes, g_ADVYAxis, g_ADVXAxis, g_ADVTraceFIFO, 'MeshStyle', 'Column' );
    set( handles.mainAxes, 'View', [95, 30] );     
    
elseif handles.displayMode == 3
    % Spectrogram
    mesh( handles.mainAxes, g_ADVYAxis, g_ADVXAxis, g_ADVTraceFIFO );
    set( handles.mainAxes, 'View', [90, 90] );

end

if g_ADVClosing == 1
    % Terminate ADV
    ADV_Close;
    
    % Close figure
    close( handles.advFigure );
end