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/****************************************************************************
**
** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qtextureimage.h"
#include "qtextureimage_p.h"
#include "qtexture_p.h"
#include "qabstracttextureimage_p.h"
#include <Qt3DCore/qpropertyupdatedchange.h>
#include <QtCore/QFileInfo>
#include <QtCore/QDateTime>
QT_BEGIN_NAMESPACE
namespace Qt3DRender {
/*!
\class Qt3DRender::QTextureImage
\inmodule Qt3DRender
\since 5.5
\brief Encapsulates the necessary information to create an OpenGL texture
image from an image source.
It contains the necessary information mipmap level, layer, cube face and
source URL to load at the proper place data into an OpenGL texture.
*/
/*!
\qmltype TextureImage
\instantiates Qt3DRender::QTextureImage
\inherits AbstractTextureImage
\inqmlmodule Qt3D.Render
\since 5.5
\brief Encapsulates the necessary information to create an OpenGL texture
image from an image source.
*/
/*!
Constructs a new Qt3DRender::QTextureImage instance with \a parent as parent.
*/
QTextureImage::QTextureImage(QNode *parent)
: QAbstractTextureImage(*new QTextureImagePrivate, parent)
{
}
/*! \internal */
QTextureImage::~QTextureImage()
{
}
/*!
\return the source url from which data for the texture image will be loaded.
*/
QUrl QTextureImage::source() const
{
Q_D(const QTextureImage);
return d->m_source;
}
/*!
* \return the current status.
*/
QTextureImage::Status QTextureImage::status() const
{
Q_D(const QTextureImage);
return d->m_status;
}
/*!
\property Qt3DRender::QTextureImage::source
This property holds the source url from which data for the texture
image will be loaded.
*/
/*!
\qmlproperty url Qt3D.Render::TextureImage::source
This property holds the source url from which data for the texture
image will be loaded.
*/
/*!
Sets the source url of the texture image to \a source.
\note This triggers a call to update()
*/
void QTextureImage::setSource(const QUrl &source)
{
Q_D(QTextureImage);
if (source != d->m_source) {
d->m_source = source;
emit sourceChanged(source);
notifyDataGeneratorChanged();
}
}
/*!
* Sets the status to \a status.
* \param status
*/
void QTextureImage::setStatus(Status status)
{
Q_D(QTextureImage);
if (status != d->m_status) {
d->m_status = status;
emit statusChanged(status);
}
}
/*!
\return the Qt3DRender::QTextureImageDataGeneratorPtr functor to be used by the
backend to load the texture image data into an OpenGL texture object.
*/
QTextureImageDataGeneratorPtr QTextureImage::dataGenerator() const
{
return QTextureImageDataGeneratorPtr(new QImageTextureDataFunctor(source()));
}
/*!
* Sets the scene change event to \a change.
* \param change
*/
void QTextureImage::sceneChangeEvent(const Qt3DCore::QSceneChangePtr &change)
{
Qt3DCore::QPropertyUpdatedChangePtr e = qSharedPointerCast<Qt3DCore::QPropertyUpdatedChange>(change);
if (e->propertyName() == QByteArrayLiteral("status"))
setStatus(static_cast<QTextureImage::Status>(e->value().toInt()));
}
/*!
* The constructor creats a new QImageTextureDataFunctor::QImageTextureDataFunctor
* instance with the specified \a url.
*/
QImageTextureDataFunctor::QImageTextureDataFunctor(const QUrl &url)
: QTextureImageDataGenerator()
, m_url(url)
, m_status(QTextureImage::None)
{
if (url.isLocalFile()) {
QFileInfo info(url.toLocalFile());
m_lastModified = info.lastModified();
}
}
QTextureImageDataPtr QImageTextureDataFunctor::operator ()()
{
// We assume that a texture image is going to contain a single image data
// For compressed dds or ktx textures a warning should be issued if
// there are layers or 3D textures
return TextureLoadingHelper::loadTextureData(m_url, false);
}
bool QImageTextureDataFunctor::operator ==(const QTextureImageDataGenerator &other) const
{
const QImageTextureDataFunctor *otherFunctor = functor_cast<QImageTextureDataFunctor>(&other);
// if its the same URL, but different modification times, its not the same image.
return (otherFunctor != Q_NULLPTR && otherFunctor->m_url == m_url && otherFunctor->m_lastModified == m_lastModified);
}
} // namespace Qt3DRender
QT_END_NAMESPACE
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