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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** 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 General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) 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.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-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "q3dsqmlstreamservice.h"
#include "q3dsqmlstreamproxy.h"
#include "q3dsqmlstreamproducer.h"
#include "q3dsincubationcontroller.h"
#include <QCoreApplication>
#include <QGuiApplication>
#include <QQmlComponent>
#include <QQuickItem>
#include <QQmlIncubationController>
#include <QScreen>
#include <QFileInfo>
class Qt3DSQmlStreamEvent : public QEvent
{
public:
Qt3DSQmlStreamEvent(const QString &id, const QString &args)
: QEvent(QEvent::User), presentationId(id), presentationArgs(args), unregister(false)
{
}
Qt3DSQmlStreamEvent(const QString &id)
: QEvent(QEvent::User), presentationId(id), unregister(true)
{
}
QString presentationId;
QString presentationArgs;
bool unregister;
};
Q3DSQmlStreamProxy::renderitem::~renderitem()
{
delete item;
delete component;
}
Q3DSQmlStreamProxy::Q3DSQmlStreamProxy(QObject *parent)
: QObject(parent), m_engine(nullptr), m_settings(nullptr)
{
}
Q3DSQmlStreamProxy::~Q3DSQmlStreamProxy()
{
for (Q3DSQmlStreamProducer *p : m_streamProducers) {
IQ3DSQmlStreamService::getQmlStreamService()->unregisterProducer(p);
delete p;
}
}
void Q3DSQmlStreamProxy::loadPresentationItem(const QString& presentationId,
const QString& presentationArgs)
{
if (!m_engine) {
m_engine = new QQmlEngine;
// Add extra import path for binary installations
QString extraImportPath(QStringLiteral("%1/qml"));
m_engine->addImportPath(extraImportPath.arg(QGuiApplication::applicationDirPath()));
m_engine->setIncubationController(new Q3DSIncubationController(this));
}
QString itemPath = presentationArgs;
itemPath.replace("\\", "/");
QUrl purl = QUrl(itemPath);
if (purl.isRelative()) {
purl.setPath(m_path.path() + QStringLiteral("/") + purl.path());
purl.setScheme(m_path.scheme());
} else {
purl = pathToUrl(itemPath);
}
QQmlComponent *component = new QQmlComponent(m_engine, purl);
if (!component)
return;
renderitem *item = new renderitem;
item->args = itemPath;
item->component = component;
item->presentationId = presentationId;
m_loadedItems.push_back(item);
if (component->isLoading())
connect(component, &QQmlComponent::statusChanged, this, &Q3DSQmlStreamProxy::itemLoaded);
else
itemLoaded();
}
void Q3DSQmlStreamProxy::itemLoaded()
{
for (renderitem *item : m_loadedItems) {
if (item->item == nullptr && item->component->isLoading() == false) {
disconnect(item->component, &QQmlComponent::statusChanged,
this, &Q3DSQmlStreamProxy::itemLoaded);
if (!item->component->errors().isEmpty()) {
QList<QQmlError> errorList = item->component->errors();
for (const QQmlError &error: errorList)
qWarning() << error.url() << error.line() << error;
m_loadedItems.removeAll(item);
delete item;
} else {
QObject *root = item->component->create();
if (!root) {
QList<QQmlError> errorList = item->component->errors();
for (const QQmlError &error: errorList)
qWarning() << error.url() << error.line() << error;
m_loadedItems.removeAll(item);
delete item;
} else {
QQuickItem *qi = qobject_cast<QQuickItem *>(root);
if (!qi) {
m_loadedItems.removeAll(item);
delete item;
} else {
item->item = qi;
m_streamProducers[item->presentationId]->setPresentationItem(qi);
}
}
}
}
}
}
QUrl Q3DSQmlStreamProxy::pathToUrl(const QString &path)
{
QUrl retval;
if (path.startsWith(QStringLiteral(":"))) {
retval.setScheme(QStringLiteral("qrc"));
retval.setPath(path.mid(1));
} else if (path.startsWith(QStringLiteral("qrc:"), Qt::CaseInsensitive)) {
retval.setScheme(QStringLiteral("qrc"));
retval.setPath(path.mid(4));
} else {
retval.setScheme(QStringLiteral("file"));
retval.setPath(path);
}
return retval;
}
bool Q3DSQmlStreamProxy::event(QEvent *event)
{
if (event->type() == QEvent::User) {
Qt3DSQmlStreamEvent *e = static_cast<Qt3DSQmlStreamEvent *>(event);
Q3DSQmlStreamProducer *producer = nullptr;
if (e->unregister && m_streamProducers.contains(e->presentationId)) {
for (int i = 0; i < m_loadedItems.size(); i++) {
if (m_loadedItems[i]->presentationId == e->presentationId) {
delete m_loadedItems[i];
m_loadedItems.remove(i);
break;
}
}
producer = static_cast<Q3DSQmlStreamProducer *>(
m_streamProducers.take(e->presentationId));
IQ3DSQmlStreamService::getQmlStreamService()->unregisterProducer(producer);
delete producer;
return true;
}
if (!m_streamProducers.contains(e->presentationId)) {
producer = new Q3DSQmlStreamProducer(e->presentationId, e->presentationArgs, this);
m_streamProducers[e->presentationId] = producer;
IQ3DSQmlStreamService::getQmlStreamService()
->registerProducer(producer, e->presentationId.toLatin1().data());
} else {
producer = static_cast<Q3DSQmlStreamProducer *>(m_streamProducers[e->presentationId]);
}
if (m_settings) {
bool streamFound = false;
for (Q3DSQmlStream *s : m_settings->qmlStreamsList()) {
if (s->presentationId() == e->presentationId) {
producer->setPresentationItem(s->item());
streamFound = true;
break;
}
}
if (!streamFound && !e->presentationArgs.isNull())
loadPresentationItem(e->presentationId, e->presentationArgs);
} else if (!e->presentationArgs.isNull()){
loadPresentationItem(e->presentationId, e->presentationArgs);
}
return true;
}
return false;
}
void Q3DSQmlStreamProxy::registerPresentation(const QString &presentationId, const QString &args)
{
QCoreApplication::postEvent(this,
new Qt3DSQmlStreamEvent(QString(presentationId), QString(args)));
}
void Q3DSQmlStreamProxy::unregisterPresentation(const QString &presentationId)
{
QCoreApplication::postEvent(this, new Qt3DSQmlStreamEvent(QString(presentationId)));
}
void Q3DSQmlStreamProxy::setSettings(Q3DSSubPresentationSettings *settings)
{
m_settings = settings;
}
void Q3DSQmlStreamProxy::setPath(const QString& path)
{
QString modPath = QFileInfo(path).path(); // path() strips filename out
m_path = pathToUrl(modPath);
}
void Q3DSQmlStreamProxy::setEngine(QQmlEngine *engine)
{
if (m_engine)
delete m_engine;
m_engine = engine;
// Add extra import path for binary installations
QString extraImportPath(QStringLiteral("%1/qml"));
m_engine->addImportPath(extraImportPath.arg(QGuiApplication::applicationDirPath()));
m_engine->setIncubationController(new Q3DSIncubationController(this));
}
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