phoneuis/bubblemanager2/bubblecore/src/bubbleimagemanager_p.cpp
changeset 27 2f8f8080a020
child 46 bc5a64e5bc3c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/phoneuis/bubblemanager2/bubblecore/src/bubbleimagemanager_p.cpp	Mon May 03 12:31:11 2010 +0300
@@ -0,0 +1,171 @@
+/*!
+* Copyright (c) 2010 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:
+*
+*/
+
+#include <QtCore>
+#include "bubbleimagemanager_p.h"
+#include "bubbleimagemanager.h"
+#include <thumbnailmanager_qt.h>
+
+//#define BUBBLE_IMAGEMANAGER_DEBUG
+#if defined(BUBBLE_IMAGEMANAGER_DEBUG)
+   #define BUBBLE_QDEBUG( a )
+   #define BUBBLE_QDEBUG_2( a, b)
+#else
+   #define BUBBLE_QDEBUG( a )\
+       qDebug() << a;
+
+   #define BUBBLE_QDEBUG_2( a, b)\
+       qDebug() << a << b;
+#endif
+
+BubbleImageManagerPrivate::BubbleImageManagerPrivate(
+    BubbleImageManager* parent)
+    : q_ptr(parent),
+      mInitialized(false)
+{
+}
+
+BubbleImageManagerPrivate::~BubbleImageManagerPrivate()
+{
+}
+
+void BubbleImageManagerPrivate::initialize()
+{
+    mThumbnailManager = new ThumbnailManager(this);
+    
+    mThumbnailManager->setMode(ThumbnailManager::Default);
+    
+    mThumbnailManager->setQualityPreference(
+        ThumbnailManager::OptimizeForPerformance);
+    
+    mThumbnailManager->setThumbnailSize(
+        ThumbnailManager::ThumbnailLarge);
+    
+    connect(mThumbnailManager,
+            SIGNAL(thumbnailReady(QPixmap, void *, int, int)),
+            this,
+            SLOT(thumbnailReady(QPixmap, void *, int, int)));
+    
+    mInitialized = true;
+}
+
+const QPixmap* BubbleImageManagerPrivate::pixmap(
+    const QString& imageFileName)
+{
+    if (mImageCache.contains(imageFileName)) {
+        return mImageCache.value(imageFileName);
+    } else {
+        return 0;
+    }
+}
+
+void BubbleImageManagerPrivate::loadImage(const QString& imageFileName)
+{
+    if (mImageCache.contains(imageFileName) ||
+        isLoading(imageFileName)) {
+        return;
+    }
+
+    if (!mInitialized) {
+        // connect to thumbnail server
+        initialize();
+    }
+
+    BUBBLE_QDEBUG_2("loading image: ", imageFileName);
+
+    QString* data = new QString(imageFileName);
+    int reqId = mThumbnailManager->getThumbnail(imageFileName, data);
+    mRequestQueue.enqueue(qMakePair(imageFileName,reqId));
+}
+
+void BubbleImageManagerPrivate::unloadImage(const QString& imageFileName)
+{
+    BUBBLE_QDEBUG_2("unloading image: ", imageFileName);
+
+    // returns null, if key doesn't exists
+    QPixmap* pixmap = mImageCache.take(imageFileName);
+    delete pixmap;
+
+    // cancel possible outstanding request
+    QMutableListIterator< QPair<QString,int> > requests(mRequestQueue);
+    while(requests.hasNext()) {
+        QPair<QString,int>& request = requests.next();  
+        
+        if (request.first==imageFileName) {
+            BUBBLE_QDEBUG_2("cancelling request: ", imageFileName);
+            mThumbnailManager->cancelRequest(request.second);            
+            requests.remove();
+            break;
+        }
+    }
+}
+
+void BubbleImageManagerPrivate::releasePixmaps()
+{
+    BUBBLE_QDEBUG_2("releasing all pixmaps: ", mImageCache.count());
+
+    // release all cached pixmaps
+    QList<QPixmap*> pixmaps = mImageCache.values();
+    qDeleteAll(pixmaps);
+    mImageCache.clear();
+}
+
+void BubbleImageManagerPrivate::thumbnailReady(
+    const QPixmap& pixmap, void *data, int id, int error)
+{
+    QString* fileName = (QString*)data;            
+    
+    if (error==0 && fileName) {
+        QPixmap *p = new QPixmap(pixmap);
+        mImageCache.insert(*fileName,p);
+        emit q_ptr->pixmapReady(*fileName);
+        BUBBLE_QDEBUG_2("thumbnailReady: ", *fileName);
+    }
+    
+    // request complete, remove it from queue
+    QMutableListIterator< QPair<QString,int> > requests(mRequestQueue);
+    while(requests.hasNext()) {
+        QPair<QString,int>& request = requests.next();  
+        if (request.second==id) {
+            BUBBLE_QDEBUG_2("deleting completed request: ", *fileName);
+            requests.remove();
+            break;
+        }
+    }    
+    
+    delete fileName;    
+}
+
+void BubbleImageManagerPrivate::thumbnailReady()
+{
+}
+
+bool BubbleImageManagerPrivate::isLoading(const QString& imageFileName) const
+{
+    bool loading = false;
+
+    QListIterator< QPair<QString,int> > requests(mRequestQueue);
+    while(requests.hasNext()) {
+        if (requests.next().first==imageFileName) {
+            loading = true;
+            break;
+        }
+    }
+
+    return loading;
+}
+