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teximage3d.cpp 9.13 KiB
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/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the QtCanvas3D module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.  For licensing terms and
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** conditions see http://qt.digia.com/licensing.  For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPLv3 included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or later as published by the Free
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** Software Foundation and appearing in the file LICENSE.GPL included in
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** the packaging of this file.  Please review the following information to
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** ensure the GNU General Public License version 2.0 requirements will be
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** met: http://www.gnu.org/licenses/gpl-2.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "teximage3d_p.h"
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#include "canvas3dcommon_p.h"
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#include <QJSValueIterator>
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/*!
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 * \qmltype TextureImage
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 * \since QtCanvas3D 1.0
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 * \ingroup qtcanvas3d-qml-types
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 * \brief Contains a texture image.
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 *
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 * An uncreatable QML type that contains a texture image created by calling
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 * TextureImageLoader::loadImage().
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 *
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 * \sa TextureImageLoader
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 */
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/*!
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 * \internal
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 */
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CanvasTextureImage::CanvasTextureImage(QObject *parent) :
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    CanvasAbstractObject(parent),
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    m_requestId(0),
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    m_state(INITIALIZED),
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    m_errorString(""),
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    m_pixelCache(0),
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    m_pixelCacheFormat(CanvasContext::NONE),
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    m_pixelCacheFlipY(false)
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{
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    m_networkAccessManager = new QNetworkAccessManager(this);
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    QObject::connect(m_networkAccessManager, &QNetworkAccessManager::finished,
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                     this, &CanvasTextureImage::handleReply);
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}
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/*! * \internal */ CanvasTextureImage::~CanvasTextureImage() { delete m_networkAccessManager; delete m_pixelCache; } /*! * \qmlproperty url TextureImage::source() * Contains the url to the image. */ /*! * \internal */ const QUrl &CanvasTextureImage::source() const { return m_source; } /*! * \internal */ void CanvasTextureImage::setSource(const QUrl &url) { if (url == m_source) return; m_source = url; emit sourceChanged(m_source); load(); } /*! * \qmlmethod int TextureImage::id() * Contains the object id. */ /*! * \internal */ ulong CanvasTextureImage::id() { return ulong(this); } /*! * \internal */ void CanvasTextureImage::load() { if (m_source.isEmpty()) { QByteArray array; m_image.loadFromData(array); m_glImage = m_image.convertToFormat(QImage::Format_RGBA8888); setImageState(LOADING_FINISHED); return; } if (m_state == LOADING) return; setImageState(LOADING); QNetworkRequest request(m_source); m_networkAccessManager->get(request); } /*! * \qmlproperty string TextureImage::errorString()
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* Contains the error string if an error happened during image creation. */ /*! * \internal */ QString CanvasTextureImage::errorString() const { return m_errorString; } /*! * \internal */ void CanvasTextureImage::handleReply(QNetworkReply *reply) { if (reply->error() != QNetworkReply::NoError) { setImageState(LOADING_ERROR); m_errorString = reply->errorString(); emit errorStringChanged(m_errorString); return; } m_image.loadFromData(reply->readAll()); setImageState(LOADING_FINISHED); } /*! * \internal */ QImage & CanvasTextureImage::getImage() { return m_image; } /*! * \internal */ QVariant *CanvasTextureImage::anything() { return m_anyValue; } /*! * \internal */ void CanvasTextureImage::setAnything(QVariant *value) { if (m_anyValue == value) return; m_anyValue = value; emit anythingChanged(value); } /*! * \qmlproperty TextureImageState TextureImage::imageState() * Contains the texture image state. It is one of \c{TextureImage.INITIALIZED}, * \c{TextureImage.LOAD_PENDING}, \c{TextureImage.LOADING}, \c{TextureImage.LOADING_FINISHED} or * \c{TextureImage.LOADING_ERROR}. */ /*! * \internal */ CanvasTextureImage::TextureImageState CanvasTextureImage::imageState() { return m_state; } /*! * \internal
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*/ void CanvasTextureImage::setImageState(TextureImageState state) { if (state == m_state) return; m_state = state; emit imageStateChanged(state); } /*! * \qmlproperty int TextureImage::width() * Contains the texture image width. */ /*! * \internal */ int CanvasTextureImage::width() { if (m_state != LOADING_FINISHED) return 0; return m_image.width(); } /*! * \qmlproperty int TextureImage::height() * Contains the texture image height. */ /*! * \internal */ int CanvasTextureImage::height() { if (m_state != LOADING_FINISHED) return 0; return m_image.height(); } /*! * \internal */ void CanvasTextureImage::emitImageLoadedSGRT() { } /*! * \internal */ void CanvasTextureImage::emitImageLoadingErrorSGRT() { } /*! * \internal */ uchar *CanvasTextureImage::convertToFormat(CanvasContext::glEnums format, bool flipY) { if (m_pixelCacheFormat == format && m_pixelCacheFlipY == flipY) return m_pixelCache; // Destroy the pixel cache delete m_pixelCache; m_pixelCache = 0; m_pixelCacheFormat = CanvasContext::NONE; // Flip the image if needed if (m_pixelCacheFlipY != flipY) { m_image = m_image.mirrored(false, true);