/*
 *
 * Zinzala SDK Example
 *
 * File         :   phalorieburn2.cpp
 * Purpose      :   Calorie burner calculator
 * Author       :   JLV
 * Creation     :   04/07/03
 * Last Update  :   08/17/04
 *
 * (C) hexaZen 2003-2004
 *
 * This file is part of an example program for Zinzala. It can be
 * used, distributed and modified without limitation.
 *
 */

#include <stdio.h>

#include <Farfalla/Application.h>
#include <Farfalla/Rect.h>
#include <Farfalla/Color.h>
#include <Farfalla/Window.h>
#include <Farfalla/GroupView.h>
#include <Farfalla/StringView.h>
#include <Farfalla/FloatEntryView.h>
#include <Farfalla/ComboBoxView.h>
#include <Farfalla/ButtonView.h>

using namespace zSDK::Cincinella;
using namespace zSDK::Farfalla;

// Defines units labels
const tChar *kDistanceLabels[2] = {
	"Miles",
	"Kilometers"
};
const tChar *kWeightLabels[2] = {
	"Pounds",
	"Kilograms"
};

// Defines units constants
const tUint16 kUnitMiles		= 1;
const tUint16 kUnitKilometers	= 2;
const tUint16 kUnitPounds		= 1;
const tUint16 kUnitKilogranms	= 2;
// Conversion constants
const tFloat64 kMilesToKm	= 1.6;
const tFloat64 kPoundsToKg	= 0.454545;
// Formula constant(s)
const tFloat64 kFormula 	= 1.036;

// Messages UID
const tUint32 kUidDistanceChanged		= 'MdCh';
const tUint32 kUidWeightChanged			= 'MwCh';
const tUint32 kUidDistanceUnitChanged	= 'MdCT';
const tUint32 kUidWeightUnitChanged		= 'MwCT';
const tUint32 kUidCompute					= 'MCmp';

// Define the Application's window class

class cCalcWindow : public cWindow
{
	public:
		cCalcWindow();
	protected:
		void MessageReceived(cMessage *aMessage);

	private:
		tFloat64 iDistance;
		tFloat64 iWeight;
		tUint16 	iDistanceUnit;
		tUint16 	iWeightUnit;
	
	private:
		cStringView *iResult;
};

/*
 * Method       : cCalcWindow
 * Purpose      : Constructor
 * Inputs       : none
 * Output       : none
 * Side Effects : none
 *
 */
cCalcWindow::cCalcWindow()
	: 	cWindow(uRect(0,0),"calc",eWinNormal,
		kFlgResizeToFit | kFlgNotResizable | kFlgNotZoomable,
		kCurrentWorkspace)
{
	cGroupView *lFrame;
	cFloatEntryView *lDistance;
	cFloatEntryView *lWeight;
	cComboBoxView *lDistanceUnit;
	cComboBoxView *lWeightUnit;
	cButtonView *lCompute;

	// Set the inital values
	iDistance 		= 0;
	iWeight 			= 0;
	iDistanceUnit 	= 2;
	iWeightUnit 	= 2;

	// Set some settings of the window
	SetPadding(5,5);
	SetTitle("Calories-burned Calculator");
	MoveTo(10,10);
	AllowScripting(eLocal);

	// Create widget to group all the widgets to put on the window
	lFrame = new cGroupView(uRect(0,0),NULL,eHorizontal,0,kFlgForceEqualSize | kFlgResizeToFit);
	lFrame->SetSlicing(3);
	lFrame->SetSpacing(5,5);

	// Create and set widget to enter the distance
	lDistance = new cFloatEntryView(uRect(60,20),"distance",iDistance,new cMessage(kUidDistanceChanged),0,kFlgUpDown);
	lDistance->SetPrecision(1);
	lDistance->SetRange(0,200);
	lDistance->AllowScripting(eLocal);

	
	// Create and set widget to enter weight
	lWeight = new cFloatEntryView(uRect(60,20),"weight",iWeight,new cMessage(kUidWeightChanged),0,kFlgUpDown);
	lWeight->SetPrecision(1);
	lWeight->SetRange(0,400);
	lWeight->AllowScripting(eLocal);

	// Create and set widget to select lDistance unit 
	lDistanceUnit = new cComboBoxView(uRect(60,20),"dunit",new cMessage(kUidDistanceUnitChanged),0,kFlgNotEditable);
	lDistanceUnit->SetItems(kDistanceLabels,2);
	lDistanceUnit->SetSelectedItem(iDistanceUnit);
	lDistanceUnit->AllowScripting(eLocal);
	
	// Create and set widget to select weight unit 
	lWeightUnit = new cComboBoxView(uRect(60,20),"wunit",new cMessage(kUidWeightUnitChanged),0,kFlgNotEditable);
	lWeightUnit->SetItems(kWeightLabels,2);	
	lWeightUnit->SetSelectedItem(iWeightUnit);
	lWeightUnit->AllowScripting(eLocal);

	// Create and set widget to display the computation result
	iResult = new cStringView(uRect(0,0),"result","",0,0);
	iResult->SetFGColor(kColorBlue);
	iResult->SetAlignment(eCenter);
	iResult->AllowScripting(eLocal);

	// Create the button to compute
	lCompute = new cButtonView(uRect(0,0),"compute","Compute",new cMessage(kUidCompute),0,0);
	lCompute->AllowScripting(eLocal);

	// Add all the widget to the group
	lFrame->AddChild(new cStringView(uRect(0,0),NULL,"Distance ran",0,0));	
	lFrame->AddChild(lDistance);
	lFrame->AddChild(lDistanceUnit);
	lFrame->AddChild(new cStringView(uRect(0,0),NULL,"Weight",0,0));	
	lFrame->AddChild(lWeight);
	lFrame->AddChild(lWeightUnit);
	lFrame->AddChild(lCompute);
	lFrame->AddChild(iResult);

	// Add the group to the window
	AddChild(lFrame);
}

/*
 * Method       : MessageReceived
 * Purpose      : A message has been received by the Window
 * Inputs       : 
 *
 * cMessage *message,	message received
 *
 * Output       : none
 * Side Effects : none
 *
 */
void cCalcWindow::MessageReceived(cMessage *aMessage)
{
	switch(aMessage->iWhat)
	{
		case kUidDistanceChanged:
		{
			aMessage->GetFloat64("value",&iDistance);
			break;
		}
		case kUidWeightChanged:
		{
			aMessage->GetFloat64("value",&iWeight);
			break;
		}
		case kUidDistanceUnitChanged:
		{
			aMessage->GetUint16("pos",&iDistanceUnit);
			break;
		}
		case kUidWeightUnitChanged:
		{
			aMessage->GetUint16("pos",&iWeightUnit);
			break;
		}
		case kUidCompute:
		{
			tChar lString[128];
		
			tFloat64 lDistance;
			tFloat64 lWeight;
			tFloat64 lCalorie;
		
			if(iDistanceUnit == kUnitMiles)
				lDistance = iDistance * kMilesToKm;
			else
				lDistance = iDistance;
			if(iWeightUnit == kUnitPounds)
				lWeight = iWeight * kPoundsToKg;
			else
				lWeight = iWeight;
			
			lCalorie = lDistance * lWeight * kFormula;	
				
			sprintf(lString,"%0.2f calories",lCalorie);		

			// Display the result in the stringview widget
			iResult->SetText(lString);

			break;
		}
		default:
			cWindow::MessageReceived(aMessage);
	}
}


int main()
{
	// Create the application
	cApplication lMyApp("hexaZen/phalorieburn",0);

	if(lMyApp.IsValid())
	{
		// Start the app (and the Photon connection)
		lMyApp.Run(); 
		// Allow scripting of the application
		lMyApp.AllowScripting(eLocal);

		// Create window
		cCalcWindow win;

		// show the window now
		win.Show();

		// Wait for the end of the app
		lMyApp.WaitEnd();
	}
	else
		fprintf(stderr,"Failed the init the application");	
}