author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 31 Aug 2010 15:30:51 +0300 | |
branch | RCL_3 |
changeset 113 | 0efa10d348c0 |
permissions | -rw-r--r-- |
113
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/* |
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* Copyright (c)2008 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: ?Description |
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* |
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*/ |
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|
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#include <QCoreApplication> |
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#include "caiconcache.h" |
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#include "caservice.h" |
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#include "caentry.h" |
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#include "caobjectadapter.h" |
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#include "caclienttest_global.h" |
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// Constants |
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static const int maxCost = 250; |
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static const QChar separator = '*'; |
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QSharedPointer<CaIconCache> CaIconCache::mInstance(0); |
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/*! |
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\class CaIconCache |
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\brief This class provides icon caching mechanism |
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Class implements singleton design patern. Use cache() method |
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to get an instance of CaIconCache |
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*/ |
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/*! |
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\var CaIconCache::mCache |
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Own. |
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*/ |
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/*! |
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\var CaIconCache::mService |
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Not own. |
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*/ |
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/*! |
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\var CaIconCache::mNotifier |
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Own. |
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*/ |
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/*! |
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Returns an instance of CaIconCache |
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\retval CaIconCache instance |
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*/ |
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CaIconCache *CaIconCache::cache() |
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{ |
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if (!mInstance.data()) { |
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mInstance = QSharedPointer<CaIconCache>(new CaIconCache()); |
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mInstance->setParent(QCoreApplication::instance()); |
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} |
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return mInstance.data(); |
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} |
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/*! |
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Destructor |
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*/ |
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CaIconCache::~CaIconCache() |
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{ |
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CACLIENTTEST_FUNC_ENTRY("CaIconCache::~CaIconCache"); |
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mCache.clear(); |
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delete mNotifier; |
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CACLIENTTEST_FUNC_EXIT("CaIconCache::~CaIconCache"); |
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} |
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/*! |
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Constructor |
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*/ |
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CaIconCache::CaIconCache(QObject *parent): QObject(parent), |
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mCache(), mService(CaService::instance()), mNotifier(0) |
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{ |
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mCache.setMaxCost(maxCost); |
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CaNotifierFilter filter; |
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mNotifier = mService->createNotifier(filter); |
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connect(mNotifier, SIGNAL(entryChanged(const CaEntry &,ChangeType)), |
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this, SLOT(remove(const CaEntry &,ChangeType))); |
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} |
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/*! |
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Returns an icon from a cache |
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\param entry an entry |
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\param size size of an icon |
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\retval icon |
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*/ |
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HbIcon CaIconCache::icon(const CaEntry &entry, const QSizeF &size) |
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{ |
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CACLIENTTEST_FUNC_ENTRY("CaIconCache::icon"); |
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HbIcon result; |
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if (HbIcon* tmp = mCache.object(key(entry,size))) { |
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result = *tmp; |
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} |
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CACLIENTTEST_FUNC_EXIT("CaIconCache::icon"); |
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return result; |
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} |
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|
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/*! |
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Insert an icon to a cache |
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\param entry an entry |
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\param size size of an icon |
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\param icon icon to be cached |
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|
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*/ |
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void CaIconCache::insert(const CaEntry &entry, const QSizeF &size, |
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const HbIcon &icon) |
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{ |
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CACLIENTTEST_FUNC_ENTRY("CaIconCache::insert"); |
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mCache.insert(key(entry,size),new HbIcon(icon)); |
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CACLIENTTEST_FUNC_EXIT("CaIconCache::insert"); |
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} |
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|
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/*! |
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Removes icon from a cache |
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\param entry an entry |
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\param changeTypa indicates if entry was updated, removed or added |
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*/ |
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void CaIconCache::remove(const CaEntry &entry, ChangeType changeType) |
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{ |
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CACLIENTTEST_FUNC_ENTRY("CaIconCache::remove"); |
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if (changeType != AddChangeType && !(entry.flags() & UninstallEntryFlag)) { |
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QString entryKey = key(entry); |
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entryKey.append(separator); |
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QList<QString> keys = mCache.keys(); |
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foreach(QString cacheKey,keys) { |
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if (cacheKey.contains(entryKey)) { |
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mCache.remove(cacheKey); |
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} |
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} |
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} |
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CACLIENTTEST_FUNC_EXIT("CaIconCache::remove"); |
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} |
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|
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/*! |
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Generates a key |
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\param entry an entry |
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\return key |
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*/ |
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|
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QString CaIconCache::key(const CaEntry &entry, const QSizeF &size) |
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{ |
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QString key; |
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if (!entry.iconDescription().filename().isEmpty()) { |
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key.append(entry.iconDescription().filename()); |
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key.append(separator); |
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key.append(entry.entryTypeName()); |
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} else { |
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key.append(separator); |
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key.append(entry.id()); |
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} |
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if (size.isValid()) { |
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key.append(separator); |
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key += QString::number(size.height()); |
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key.append(separator); |
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key += QString::number(size.width()); |
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} |
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return key; |
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} |