author | hgs |
Wed, 15 Sep 2010 12:09:55 +0300 | |
changeset 68 | 83cc6bae1de8 |
parent 47 | f83bd4ae1fe3 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2009 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: |
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* |
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*/ |
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|
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#include "nmuiheaders.h" |
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static const char *NMUI_DOC_DEFAULT_IMAGE = ":/trolltech/styles/commonstyle/images/file-16.png"; |
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/*! |
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\class NmEditorTextDocument |
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\brief Text document with URL image fetching support |
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*/ |
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|
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/*! |
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Constructor. Caller needs to ensure manager is valid reference. |
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*/ |
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NmEditorTextDocument::NmEditorTextDocument(QNetworkAccessManager &manager) : |
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mManager(manager) |
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{ |
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NM_FUNCTION; |
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connect(&mManager, SIGNAL(finished(QNetworkReply*)), |
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this, SLOT(replyFinished(QNetworkReply*))); |
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} |
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/*! |
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Destructor |
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*/ |
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NmEditorTextDocument::~NmEditorTextDocument() |
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{ |
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NM_FUNCTION; |
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foreach(QNetworkReply *reply, mReplyList) { |
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if(reply) { |
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reply->abort(); |
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reply->deleteLater(); |
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} |
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} |
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} |
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/*! |
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replyFinished. Signaled when the image has been loaded from Internet. |
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*/ |
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void NmEditorTextDocument::replyFinished(QNetworkReply *reply) |
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{ |
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NM_FUNCTION; |
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if(reply) { |
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if(reply->error() == QNetworkReply::NoError) { |
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QPixmap image; |
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if(image.loadFromData(reply->readAll())) { |
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addResource(QTextDocument::ImageResource, reply->url(), QVariant(image)); |
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emit documentLayoutChanged(); |
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} |
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} |
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// If this has created the request, then this needs to handle deletion also. |
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if (mReplyList.removeAll(reply)) { |
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reply->deleteLater(); |
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} |
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} |
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} |
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/*! |
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loadResource. Starts fetching image from given URL. |
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*/ |
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QVariant NmEditorTextDocument::loadResource(int type, const QUrl &name) |
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{ |
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NM_FUNCTION; |
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QVariant retVal; |
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if(type == QTextDocument::ImageResource) { |
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// Load image data from the cache if it exists |
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if(mManager.cache()) { |
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QIODevice *ioDevice = mManager.cache()->data(name); |
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if(ioDevice) { |
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QPixmap image; |
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if(image.loadFromData(ioDevice->readAll())) { |
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addResource(QTextDocument::ImageResource, name, QVariant(image)); |
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retVal = QVariant(image); |
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} |
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delete ioDevice; |
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} |
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} |
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// Loading from cache failed, try from internet. |
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if(retVal.isNull()) { |
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// Make a request to load the image from Internet. Store the reply |
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// to be able to abort it if necessary. |
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QNetworkRequest request(name); |
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mReplyList.append(mManager.get(request)); |
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|
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// Load Qt's default image to prevent multiple calls to loadResource. |
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// This function keeps on getting called repeatedly until |
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// resource is added. |
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QPixmap image = QPixmap(QLatin1String(NMUI_DOC_DEFAULT_IMAGE)); |
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addResource(QTextDocument::ImageResource, name, QVariant(image)); |
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retVal = image; |
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} |
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} |
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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changeset
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116 |
// Could not find the resource -> try Qt implementation |
ecc8def7944a
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
117 |
if(retVal.isNull()) { |
ecc8def7944a
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
118 |
retVal = QTextDocument::loadResource(type, name); |
ecc8def7944a
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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119 |
} |
ecc8def7944a
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
120 |
return retVal; |
ecc8def7944a
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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121 |
} |