/*
* Copyright (c) 2008 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: This is the implementation of application class
*
*/
#include <e32std.h>
#include <e32svr.h>
#include "finder.h"
#ifndef DBG
#ifdef _DEBUG
#define DBG(a) a
#else
#define DBG(a)
#endif
#endif
// ----------------------------------------------------------------------
TMouseFinder::TMouseFinder()
: iXY(0), iButtons(0), iWheel(0), iAppCollection(0)
{
// Nothing else to do
}
// ----------------------------------------------------------------------
TBool TMouseFinder::BeginCollection(const CCollection *aCollection)
{
TBool examineCollection = ETrue;
if ((aCollection->IsApplication()) && (iAppCollection == 0))
{
// Top-level application collection.
if ((aCollection->UsagePage() == EUsagePageGenericDesktop)
&& (aCollection->Usage() == EGenericDesktopUsageMouse))
{
// Collection is a mouse device:
iAppCollection = aCollection;
iXY = iWheel = iButtons = 0;
}
else
{
// Skip other types of top-level application collection:
examineCollection = EFalse;
}
}
return examineCollection;
}
TBool TMouseFinder::EndCollection(const CCollection *aCollection)
{
TBool continueSearch = ETrue;
DBG(RDebug::Print(_L("[HID]\tTHeadsetFinder::EndCollection")));
if (aCollection == iAppCollection)
{
// Top-level application(Generic Desktop:Mouse) finished:
//
iAppCollection = 0;
// Stop if we've found a mouse we can use in this
// application collection:
//
continueSearch = !Found();
}
return continueSearch;
}
void TMouseFinder::Field(const CField* aField)
{
if (iAppCollection)
{
if (IsWheel(aField))
{
iWheel = aField;
}
if (IsXY(aField))
{
iXY = aField;
}
if (IsButtons(aField))
{
iButtons = aField;
}
}
}
// ----------------------------------------------------------------------
TBool TMouseFinder::IsXY(const CField* aField) const
{
TBool found = EFalse;
if (aField->IsInput() && aField->IsData() &&
(aField->UsagePage() == EUsagePageGenericDesktop))
{
if ( aField->HasUsage(EGenericDesktopUsageX) &&
aField->HasUsage(EGenericDesktopUsageY) )
{
DBG(RDebug::Print(_L("[HID]\tXY field found")));
found = ETrue;
}
}
return found;
}
TBool TMouseFinder::IsButtons(const CField* aField) const
{
TBool found = EFalse;
if (aField->IsInput() && aField->IsData() &&
(aField->UsagePage() == EUsagePageButton))
{
const TInt KMinButtons = 1;
const TInt KMaxButtons = 15;
// Test for a field containing at least num lock or caps lock
if ( (aField->UsageMin() >= KMinButtons)
&& (aField->UsageMax() <= KMaxButtons) )
{
DBG(RDebug::Print(_L("[HID]\tButtons field found")));
found = ETrue;
}
}
return found;
}
TBool TMouseFinder::IsWheel(const CField* aField) const
{
TBool found = EFalse;
if (aField->IsInput() && aField->IsData() &&
(aField->UsagePage() == EUsagePageGenericDesktop))
{
if ( aField->HasUsage( EGenericDesktopUsageWheel ) )
{
found = ETrue;
}
}
return found;
}
// End of File