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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qqmlpreviewservice.h"
#include <QtCore/qpointer.h>
#include <QtQml/qqmlengine.h>
#include <QtQml/qqmlcomponent.h>
#include <QtQuick/qquickwindow.h>
#include <QtQuick/qquickitem.h>
#include <QtGui/qguiapplication.h>
#include <private/qquickpixmap_p.h>
#include <private/qqmldebugconnector_p.h>
#include <private/qversionedpacket_p.h>
QT_BEGIN_NAMESPACE
const QString QQmlPreviewServiceImpl::s_key = QStringLiteral("QmlPreview");
using QQmlDebugPacket = QVersionedPacket<QQmlDebugConnector>;
QQmlPreviewServiceImpl::QQmlPreviewServiceImpl(QObject *parent) :
QQmlDebugService(s_key, 1.0f, parent)
{
m_loader.reset(new QQmlPreviewFileLoader(this));
connect(this, &QQmlPreviewServiceImpl::load,
m_loader.data(), &QQmlPreviewFileLoader::whitelist, Qt::DirectConnection);
connect(this, &QQmlPreviewServiceImpl::load, &m_handler, &QQmlPreviewHandler::loadUrl);
connect(this, &QQmlPreviewServiceImpl::rerun, &m_handler, &QQmlPreviewHandler::rerun);
connect(this, &QQmlPreviewServiceImpl::zoom, &m_handler, &QQmlPreviewHandler::zoom);
connect(&m_handler, &QQmlPreviewHandler::error, this, &QQmlPreviewServiceImpl::forwardError,
Qt::DirectConnection);
connect(&m_handler, &QQmlPreviewHandler::fps, this, &QQmlPreviewServiceImpl::forwardFps,
Qt::DirectConnection);
}
QQmlPreviewServiceImpl::~QQmlPreviewServiceImpl()
{
}
void QQmlPreviewServiceImpl::messageReceived(const QByteArray &data)
{
QQmlDebugPacket packet(data);
qint8 command;
packet >> command;
switch (command) {
case File: {
QString path;
QByteArray contents;
packet >> path >> contents;
emit file(path, contents);
// Replace the whole scene with the first file successfully loaded over the debug
// connection. This is an OK approximation of the root component, and if the client wants
// something specific, it will send an explicit Load anyway.
if (m_currentUrl.isEmpty() && path.endsWith(".qml")) {
if (path.startsWith(':'))
m_currentUrl = QUrl("qrc" + path);
else
m_currentUrl = QUrl::fromLocalFile(path);
emit load(m_currentUrl);
}
break;
}
case Directory: {
QString path;
QStringList entries;
packet >> path >> entries;
emit directory(path, entries);
break;
}
case Load: {
QUrl url;
packet >> url;
if (url.isEmpty())
url = m_currentUrl;
else
m_currentUrl = url;
emit load(url);
break;
}
case Error: {
QString file;
packet >> file;
emit error(file);
break;
}
case Rerun:
emit rerun();
break;
case ClearCache:
emit clearCache();
break;
case Zoom: {
float factor;
packet >> factor;
emit zoom(static_cast<qreal>(factor));
break;
}
default:
forwardError(QString::fromLatin1("Invalid command: %1").arg(command));
break;
}
}
void QQmlPreviewServiceImpl::engineAboutToBeAdded(QJSEngine *engine)
{
if (QQmlEngine *qmlEngine = qobject_cast<QQmlEngine *>(engine))
m_handler.addEngine(qmlEngine);
emit attachedToEngine(engine);
}
void QQmlPreviewServiceImpl::engineAboutToBeRemoved(QJSEngine *engine)
{
if (QQmlEngine *qmlEngine = qobject_cast<QQmlEngine *>(engine))
m_handler.removeEngine(qmlEngine);
emit detachedFromEngine(engine);
}
void QQmlPreviewServiceImpl::stateChanged(QQmlDebugService::State state)
{
m_fileEngine.reset(state == Enabled ? new QQmlPreviewFileEngineHandler(m_loader.data())
: nullptr);
}
void QQmlPreviewServiceImpl::forwardRequest(const QString &file)
{
QQmlDebugPacket packet;
packet << static_cast<qint8>(Request) << file;
emit messageToClient(name(), packet.data());
}
void QQmlPreviewServiceImpl::forwardError(const QString &error)
{
QQmlDebugPacket packet;
packet << static_cast<qint8>(Error) << error;
emit messageToClient(name(), packet.data());
}
void QQmlPreviewServiceImpl::forwardFps(const QQmlPreviewHandler::FpsInfo &frames)
{
QQmlDebugPacket packet;
packet << static_cast<qint8>(Fps)
<< frames.numSyncs << frames.minSync << frames.maxSync << frames.totalSync
<< frames.numRenders << frames.minRender << frames.maxRender << frames.totalRender;
emit messageToClient(name(), packet.data());
}
QQuickItem *QQmlPreviewServiceImpl::currentRootItem()
{
return m_handler.currentRootItem();
}
QT_END_NAMESPACE
#include "moc_qqmlpreviewservice.cpp"
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