// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// Debug bar

// 

//

#include "debugbar.h"

#include <bitstd.h>

#include "screen.h"

#include "wstop.h"

#include <e32cmn.h>

CDebugBar* CDebugBar::NewL(CScreen * aScreen,const TRect& aScreenRect,TTimeIntervalMicroSeconds32 aRefreshInterval)

	{

	CDebugBar* self = new(ELeave) CDebugBar(aScreen,aScreenRect);

	CleanupStack::PushL(self);

	self->ConstructL(aRefreshInterval);

	CleanupStack::Pop(self);

	return self;

	}

CDebugBar::~CDebugBar()

	{

	iScreen->ScreenDevice()->ReleaseFont(iFont);

	delete iTimer;

	}

CDebugBar::CDebugBar(CScreen * aScreen,const TRect& aScreenRect) : iScreen(aScreen), iScreenRect(aScreenRect)

	{

	}

void CDebugBar::ConstructL(TTimeIntervalMicroSeconds32 aRefreshInterval)

	{

	iTimer = CPeriodic::NewL(EPriorityNormal);

	iTimer->Start(TTimeIntervalMicroSeconds32(3000000),aRefreshInterval,TCallBack(RedrawDebugBarCallback, this));

	TFontSpec fspec(_L("DejaVu Sans Condensed"),9);

	User::LeaveIfError(iScreen->ScreenDevice()->GetNearestFontToDesignHeightInPixels(iFont, fspec));

	iBaseline = (iFont->BaselineOffsetInPixels() + iFont->AscentInPixels());

	}

const TRect& CDebugBar::Rect() const

	{

	return iScreenRect;

	}

TBool CDebugBar::RedrawDebugBarCallback(TAny * aAny)

	{

	CDebugBar* self = reinterpret_cast<CDebugBar *>(aAny);

	self->iPolls++; //minus-out the events which cause this debug-bar to 'tick'

	self->RedrawDebugBar();

	self->iScreen->Update(TRegionFix<1>(self->iScreenRect));

	return ETrue;

	}

#include "walkwindowtree.h"	

#include "rootwin.h"

void CDebugBar::RedrawDebugBar() const

	{

	_LIT(KLine1Format, "KeyEvents %d; %Ld; WServ %.1f%%; Drawing %.1f%%; Reclaimed %.1f%%");

	_LIT(KLine2Format, "RedrawStore size %d3B; updates %d/s, pixels %d/s"); 

	CWsActiveScheduler* scheduler = CWsActiveScheduler::Static();

	TInt updatesPerSecond;

	TInt64 pixelsPerSecond;

	scheduler->DrawStats(updatesPerSecond,pixelsPerSecond,2);

	CFbsBitGc *gc = iScreen->ScreenGdi();

	gc->Reset();

	gc->SetDrawMode(CGraphicsContext::EDrawModePEN);

	gc->SetPenColor(KRgbWhite);

	gc->SetPenStyle(CGraphicsContext::ESolidPen);

	gc->SetBrushStyle(CGraphicsContext::ESolidBrush);

	gc->SetBrushColor(KRgbBlack);

	gc->DrawRect(iScreenRect);

	gc->UseFont(iFont);

	TInt64 wserv = scheduler->Total() - iLastTotal;

	TInt64 nonwserv = scheduler->Idle() - iLastIdle;

	TInt64 drawing = scheduler->Drawing() - iLastDrawing;

	TInt64 reclaimed = scheduler->ReclaimedIdleTime() - iLastReclaimedIdleTime;

	TReal wservPercent =  wserv+nonwserv? ((TReal)wserv / (TReal)(wserv + nonwserv)) * 100.0 : 0.0 ;

	TReal drawingPercent = wserv? ((TReal)drawing / (TReal)wserv) * 100.0: 0 ;

	TReal reclaimedPercent = wserv+nonwserv? ((TReal)reclaimed / (TReal)(wserv + nonwserv)) * 100.0: 100.0 ;

	TWalkWindowTreeRedrawStoreSize redrawStoreWalker;

	iScreen->RootWindow()->WalkWindowTree(redrawStoreWalker, EWalkChildrenAndBehind);

	TRect textRect(iScreenRect);

	textRect.SetHeight(textRect.Height() / 2);

	iBuf.Format(KLine1Format,iKeyEvents,scheduler->Requests()-iPolls,wservPercent,drawingPercent,reclaimedPercent);

	gc->DrawText(iBuf,textRect,iBaseline);

	textRect.Move(TPoint(0,textRect.Height()));

	iBuf.Format(KLine2Format,redrawStoreWalker.iTotalSize, updatesPerSecond, pixelsPerSecond);

	gc->DrawText(iBuf,textRect,iBaseline);

	gc->DiscardFont();

	iLastTotal=scheduler->Total();

	iLastIdle=scheduler->Idle();

	iLastDrawing=scheduler->Drawing();

	iLastReclaimedIdleTime=scheduler->ReclaimedIdleTime();

	}

void CDebugBar::OnKeyEvent()

	{

	iKeyEvents++;

	RedrawDebugBar();

	iScreen->Update(TRegionFix<1>(iScreenRect));

	}