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-rw-r--r--demos/qt3d/photobrowser3d/bytereader.cpp158
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diff --git a/demos/qt3d/photobrowser3d/bytereader.cpp b/demos/qt3d/photobrowser3d/bytereader.cpp
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--- a/demos/qt3d/photobrowser3d/bytereader.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the QtQuick3D module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** GNU Lesser General Public License Usage
-** This file may be used under the terms of the GNU Lesser General Public
-** License version 2.1 as published by the Free Software Foundation and
-** appearing in the file LICENSE.LGPL included in the packaging of this
-** file. Please review the following information to ensure the GNU Lesser
-** General Public License version 2.1 requirements will be met:
-** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU General
-** Public License version 3.0 as published by the Free Software Foundation
-** and appearing in the file LICENSE.GPL included in the packaging of this
-** file. Please review the following information to ensure the GNU General
-** Public License version 3.0 requirements will be met:
-** http://www.gnu.org/copyleft/gpl.html.
-**
-** Other Usage
-** Alternatively, this file may be used in accordance with the terms and
-** conditions contained in a signed written agreement between you and Nokia.
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "bytereader.h"
-#include "thumbnailableimage.h"
-
-#include <QByteArray>
-#include <QThread>
-#include <QImage>
-#include <QImageReader>
-#include <QUrl>
-#include <QFile>
-#include <QCoreApplication>
-
-ByteReader::ByteReader()
-{
- m_stop = 0;
- m_loading = 0;
-}
-
-void ByteReader::loadFile(const ThumbnailableImage &image)
-{
- if (!m_stop)
- {
- m_loading.ref();
-
- // FIXME: actually handle remote files
- QUrl url = image.url();
- QString fn = url.toLocalFile();
- int pos = fn.lastIndexOf('.');
- QString ext;
- if (pos != -1)
- ext = fn.mid(pos).toUpper();
- if (ext.isEmpty() ||
- !QImageReader::supportedImageFormats().contains(ext.toLocal8Bit()))
- ext = QString();
- QImage im;
- QFile f(fn);
- QString errorMessage;
- if (f.open(QIODevice::ReadOnly))
- {
- QByteArray bytes;
- while (!f.atEnd() & !m_stop)
- {
- bytes.append(f.read(1024));
- QCoreApplication::processEvents();
- }
- im = ext.isEmpty() ? QImage::fromData(bytes)
- : QImage::fromData(bytes, qPrintable(ext));
- }
- else
- {
- errorMessage = tr("Could not read: %1").arg(url.toString());
- }
-
- QCoreApplication::processEvents();
- if (!m_stop)
- {
- if (im.isNull())
- {
- im = QImage(QSize(128, 128), QImage::Format_ARGB32);
- im.fill(qRgba(0, 30, 50, 64));
- QPainter ptr;
- ptr.begin(&im);
- ptr.setBackgroundMode(Qt::TransparentMode);
- if (errorMessage.isEmpty())
- errorMessage = tr("Could not load: %1").arg(url.toString());
- ptr.setPen(QColor("orange"));
- ptr.drawText(im.rect(), Qt::AlignCenter, errorMessage);
- ptr.end();
- }
- else
- {
- // TODO: Fix size limit
- // This arbitrary size limit is really a debugging/development thing
- // In a real program once you had loaded the full image, the photo-
- // viewer would allow zooming and panning all around in the image
- // so loading a 2896 pixel × 1944 pixel photo would make sense even
- // on a small screen. For now work with fairly cruddy image quality.
- // Probably the fix is to have a separate load call that re-fetches
- // the full image on a zoom
- QSize workSize(1024, 768);
- Qt::TransformationMode mode = Qt::SmoothTransformation;
- if (QThread::idealThreadCount() < 2)
- {
- workSize = workSize / 2;
- mode = Qt::FastTransformation;
- }
- if (im.size().width() > workSize.width() || im.size().height() > workSize.height())
- im = im.scaled(workSize, Qt::KeepAspectRatio, mode);
- }
-
- Q_ASSERT(!im.isNull());
- ThumbnailableImage result(image);
- result.setData(im);
-
- // it would be nice to incur the cost of setThumbnailed() on the image
- // at this point - in the background thread. Trouble is the atlas is
- // constantly being accessed by the draw loop and to do anything about
- // that would mean locking the GUI thread...
-
- Q_ASSERT(!result.isNull());
-
- emit imageLoaded(result);
- }
-
- m_loading.deref();
- }
-
- if (m_stop)
- emit stopped();
-
-}
-
-void ByteReader::stop()
-{
- m_stop.ref();
- if (!m_loading)
- emit stopped();
-}