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Diffstat (limited to 'src/quick3d/quick3dscene2d/items/scene2dmanager.cpp')
| -rw-r--r-- | src/quick3d/quick3dscene2d/items/scene2dmanager.cpp | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/src/quick3d/quick3dscene2d/items/scene2dmanager.cpp b/src/quick3d/quick3dscene2d/items/scene2dmanager.cpp new file mode 100644 index 000000000..20c080dec --- /dev/null +++ b/src/quick3d/quick3dscene2d/items/scene2dmanager.cpp @@ -0,0 +1,248 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the Qt3D module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL3$ +** 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 http://www.qt.io/terms-conditions. For further +** information use the contact form at http://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.LGPLv3 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.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 later 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 2.0 requirements will be +** met: http://www.gnu.org/licenses/gpl-2.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qscene2d.h" +#include "qscene2d_p.h" +#include "scene2d_p.h" +#include "scene2dmanager_p.h" +#include "scene2devent_p.h" + +#include <Qt3DCore/QPropertyUpdatedChange> + +QT_BEGIN_NAMESPACE + +using namespace Qt3DCore; + +namespace Qt3DRender { + +namespace Quick { + +class RenderControl : public QQuickRenderControl +{ +public: + RenderControl(QWindow *w) : m_window(w) { } + QWindow *renderWindow(QPoint *offset) Q_DECL_OVERRIDE; + +private: + QWindow *m_window; +}; + +QWindow *RenderControl::renderWindow(QPoint *offset) +{ + if (offset) + *offset = QPoint(0, 0); + return m_window; +} + +/*! + \internal + Constructs qml render manager. + */ +Scene2DManager::Scene2DManager(QScene2DPrivate *priv) + : m_rootItem(nullptr) + , m_item(nullptr) + , m_priv(priv) + , m_sharedObject(new Scene2DSharedObject(this)) + , m_renderPolicy(QScene2D::Continuous) + , m_requested(false) + , m_initialized(false) + , m_renderSyncRequested(false) + , m_backendInitialized(false) + , m_mouseEnabled(true) +{ + m_sharedObject->m_surface = new QOffscreenSurface; + m_sharedObject->m_surface->setFormat(QSurfaceFormat::defaultFormat()); + m_sharedObject->m_surface->create(); + + // Create render control + m_sharedObject->m_renderControl = new RenderControl(nullptr); + + // Create window to render the QML with + m_sharedObject->m_quickWindow = new QQuickWindow(m_sharedObject->m_renderControl); + m_sharedObject->m_quickWindow->setClearBeforeRendering(false); + + connect(m_sharedObject->m_renderControl, &QQuickRenderControl::renderRequested, + this, &Scene2DManager::requestRender); + connect(m_sharedObject->m_renderControl, &QQuickRenderControl::sceneChanged, + this, &Scene2DManager::requestRenderSync); +} + +Scene2DManager::~Scene2DManager() +{ + m_sharedObject = nullptr; +} + +void Scene2DManager::requestRender() +{ + // Don't request render until the backend is initialized. + if (m_sharedObject->canRender()) { + if (!m_requested) { + m_requested = true; + QCoreApplication::postEvent(this, new Scene2DEvent(Scene2DEvent::Render)); + } + } +} + +void Scene2DManager::requestRenderSync() +{ + // Don't request render until the backed is initialized. + if (m_sharedObject->canRender()) { + if (!m_requested) { + m_requested = true; + QCoreApplication::postEvent(this, new Scene2DEvent(Scene2DEvent::RenderSync)); + } + } else { + m_renderSyncRequested = true; + } +} + +void Scene2DManager::startIfInitialized() +{ + if (!m_initialized && m_backendInitialized && m_item != nullptr) { + m_rootItem = m_item; + + // Associate root item with the window. + m_rootItem->setParentItem(m_sharedObject->m_quickWindow->contentItem()); + + // Update window size. + updateSizes(); + + m_initialized = true; + m_sharedObject->setInitialized(); + } +} + +void Scene2DManager::stopAndClean() +{ + if (m_sharedObject->isInitialized()) { + QMutexLocker lock(&m_sharedObject->m_mutex); + m_sharedObject->requestQuit(); + m_sharedObject->wait(); + m_sharedObject->cleanup(); + } +} + +void Scene2DManager::updateSizes() +{ + const int width = m_rootItem->width(); + const int height = m_rootItem->height(); + if (width == 0 || height == 0) { + qWarning() << "QScene2D: Root item size not set."; + return; + } + m_sharedObject->m_quickWindow->setGeometry(0, 0, width, height); +} + +void Scene2DManager::setItem(QQuickItem *item) +{ + m_item = item; + startIfInitialized(); +} + +bool Scene2DManager::event(QEvent *e) +{ + switch (static_cast<Scene2DEvent::Type>(e->type())) { + + case Scene2DEvent::Render: { + // just render request, don't need to call sync in render thread + QMutexLocker lock(&m_sharedObject->m_mutex); + m_sharedObject->requestRender(false); + m_requested = false; + return true; + } + + case Scene2DEvent::RenderSync: { + // sync and render request, main and render threads must be synchronized + if (!m_sharedObject->isQuit()) + doRenderSync(); + m_requested = false; + return true; + } + + case Scene2DEvent::Prepare: { + m_sharedObject->m_renderControl->prepareThread(m_sharedObject->m_renderThread); + m_sharedObject->setPrepared(); + + if (m_renderSyncRequested) { + if (!m_requested) { + m_requested = true; + QCoreApplication::postEvent(this, new Scene2DEvent(Scene2DEvent::RenderSync)); + } + m_renderSyncRequested = false; + } + return true; + } + + case Scene2DEvent::Initialized: { + // backend is initialized, start the qml + m_backendInitialized = true; + startIfInitialized(); + return true; + } + + case Scene2DEvent::Rendered: { + // render is done, excellent, now clean anything not needed anymore. + stopAndClean(); + return true; + } + + default: + break; + } + return QObject::event(e); +} + +void Scene2DManager::doRenderSync() +{ + QMutexLocker lock(&m_sharedObject->m_mutex); + + m_sharedObject->requestRender(true); + m_sharedObject->m_renderControl->polishItems(); + + // begin waiting render thread + m_sharedObject->wait(); + m_requested = false; +} + +void Scene2DManager::cleanup() +{ + stopAndClean(); +} + +} // namespace Quick +} // namespace Qt3DRender + +QT_END_NAMESPACE |