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/* This file is part of the KDE project
* Copyright (C) 2007, 2009 Thomas Zander <zander@kde.org>
* Copyright (C) 2008 Thorsten Zachmann <zachmann@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "KoImageCollection.h"
#include "KoImageData.h"
#include "KoImageData_p.h"
#include "KoShapeSavingContext.h"
#include <KoStoreDevice.h>
#include <QCryptographicHash>
#include <KoXmlWriter.h>
#include <QMap>
#include <kdebug.h>
#include <kmimetype.h>
class KoImageCollection::Private
{
public:
~Private()
{
foreach(KoImageDataPrivate *id, images)
id->collection = 0;
}
QMap<qint64, KoImageDataPrivate*> images;
// an extra map to find all dataObjects based on the key of a store.
QMap<QByteArray, KoImageDataPrivate*> storeImages;
};
KoImageCollection::KoImageCollection(QObject *parent)
: QObject(parent),
d(new Private())
{
}
KoImageCollection::~KoImageCollection()
{
delete d;
}
bool KoImageCollection::completeLoading(KoStore *store)
{
Q_UNUSED(store);
d->storeImages.clear();
return true;
}
bool KoImageCollection::completeSaving(KoStore *store, KoXmlWriter *manifestWriter, KoShapeSavingContext *context)
{
QMap<qint64, QString> imagesToSave(context->imagesToSave());
QMap<qint64, QString>::iterator imagesToSaveIter(imagesToSave.begin());
QMap<qint64, KoImageDataPrivate *>::iterator knownImagesIter(d->images.begin());
while (imagesToSaveIter != imagesToSave.end()) {
if (knownImagesIter == d->images.end()) {
// this should not happen
kWarning(30006) << "image not found";
Q_ASSERT(0);
break;
}
else if (knownImagesIter.key() == imagesToSaveIter.key()) {
KoImageDataPrivate *imageData = knownImagesIter.value();
if (imageData->imageLocation.isValid()) {
// TODO store url
Q_ASSERT(0); // not implemented yet
}
else if (store->open(imagesToSaveIter.value())) {
KoStoreDevice device(store);
bool ok = imageData->saveData(device);
store->close();
// TODO error handling
if (ok) {
const QString mimetype(KMimeType::findByPath(imagesToSaveIter.value(), 0 , true)->name());
manifestWriter->addManifestEntry(imagesToSaveIter.value(), mimetype);
} else {
kWarning(30006) << "saving image" << imagesToSaveIter.value() << "failed";
}
} else {
kWarning(30006) << "saving image failed: open store failed";
}
++knownImagesIter;
++imagesToSaveIter;
} else if (knownImagesIter.key() < imagesToSaveIter.key()) {
++knownImagesIter;
} else {
// this should not happen
kWarning(30006) << "image not found";
abort();
Q_ASSERT(0);
}
}
return true;
}
KoImageData *KoImageCollection::createImageData(const QImage &image)
{
Q_ASSERT(!image.isNull());
KoImageData *data = new KoImageData();
data->setImage(image);
data = cacheImage(data);
return data;
}
KoImageData *KoImageCollection::createExternalImageData(const QUrl &url)
{
Q_ASSERT(!url.isEmpty() && url.isValid());
QCryptographicHash md5(QCryptographicHash::Md5);
md5.addData(url.toEncoded());
qint64 key = KoImageDataPrivate::generateKey(md5.result());
if (d->images.contains(key))
return new KoImageData(d->images.value(key));
KoImageData *data = new KoImageData();
data->setExternalImage(url);
data->priv()->collection = this;
Q_ASSERT(data->key() == key);
d->images.insert(key, data->priv());
return data;
}
KoImageData *KoImageCollection::createImageData(const QString &href, KoStore *store)
{
// the tricky thing with a 'store' is that we need to read the data now
// as the store will no longer be readable after the loading completed.
//
// The solution we use is to read the data, store it in a KTemporaryFile
// and read and parse it on demand when the image data is actually needed.
// This leads to having two keys, one for the store and one for the
// actual image data. We need the latter so if someone else gets the same
// image data he can find this data and share (insert warm fuzzy feeling here).
//
QByteArray storeKey = (QString::number((qint64) store) + href).toLatin1();
if (d->storeImages.contains(storeKey))
return new KoImageData(d->storeImages.value(storeKey));
KoImageData *data = new KoImageData();
data->setImage(href, store);
data = cacheImage(data);
d->storeImages.insert(storeKey, data->priv());
return data;
}
KoImageData *KoImageCollection::createImageData(const QByteArray &imageData)
{
QCryptographicHash md5(QCryptographicHash::Md5);
md5.addData(imageData);
qint64 key = KoImageDataPrivate::generateKey(md5.result());
if (d->images.contains(key))
return new KoImageData(d->images.value(key));
KoImageData *data = new KoImageData();
data->setImage(imageData);
data->priv()->collection = this;
Q_ASSERT(data->key() == key);
d->images.insert(key, data->priv());
return data;
}
KoImageData *KoImageCollection::cacheImage(KoImageData *data)
{
QMap<qint64, KoImageDataPrivate*>::const_iterator it(d->images.constFind(data->key()));
if (it == d->images.constEnd()) {
d->images.insert(data->key(), data->priv());
data->priv()->collection = this;
}
else {
delete data;
data = new KoImageData(it.value());
}
return data;
}
bool KoImageCollection::fillFromKey(KoImageData &idata, qint64 key)
{
if (d->images.contains(key)) {
idata = KoImageData(d->images.value(key));
return true;
}
return false;
}
int KoImageCollection::size() const
{
return d->images.count();
}
int KoImageCollection::count() const
{
return d->images.count();
}
void KoImageCollection::update(qint64 oldKey, qint64 newKey)
{
if (oldKey == newKey) {
return;
}
if (d->images.contains(oldKey)) {
KoImageDataPrivate *imageData = d->images[oldKey];
d->images.remove(oldKey);
d->images.insert(newKey, imageData);
}
}
void KoImageCollection::removeOnKey(qint64 imageDataKey)
{
d->images.remove(imageDataKey);
}
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