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/****************************************************************************
**
** Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qt3dquickwindow.h"
#include <Qt3DQuick/QQmlAspectEngine>
#include <Qt3DRender/qcamera.h>
#include <Qt3DRender/qrenderaspect.h>
#include <Qt3DRender/qframegraph.h>
#include <Qt3DRender/qrendersurfaceselector.h>
#include <Qt3DInput/qinputaspect.h>
#include <Qt3DInput/qinputsettings.h>
#include <Qt3DLogic/qlogicaspect.h>
#include <QQmlContext>
#include <QtGui/qopenglcontext.h>
QT_BEGIN_NAMESPACE
Qt3DQuickWindow::Qt3DQuickWindow(QWindow *parent)
: QQuickWindow(parent)
, m_engine(new Qt3DCore::Quick::QQmlAspectEngine)
, m_renderAspect(new Qt3DRender::QRenderAspect)
, m_inputAspect(new Qt3DInput::QInputAspect)
, m_logicAspect(new Qt3DLogic::QLogicAspect)
, m_initialized(false)
, m_cameraAspectRatioMode(AutomaticAspectRatio)
{
setSurfaceType(QSurface::OpenGLSurface);
resize(1024, 768);
QSurfaceFormat format;
if (QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGL) {
format.setVersion(4, 3);
format.setProfile(QSurfaceFormat::CoreProfile);
}
format.setDepthBufferSize(24);
format.setSamples(4);
format.setStencilBufferSize(8);
setFormat(format);
create();
m_engine->aspectEngine()->registerAspect(m_renderAspect);
m_engine->aspectEngine()->registerAspect(m_inputAspect);
m_engine->aspectEngine()->registerAspect(m_logicAspect);
}
Qt3DQuickWindow::~Qt3DQuickWindow()
{
}
void Qt3DQuickWindow::registerAspect(Qt3DCore::QAbstractAspect *aspect)
{
Q_ASSERT(!isVisible());
m_engine->aspectEngine()->registerAspect(aspect);
}
void Qt3DQuickWindow::registerAspect(const QString &name)
{
Q_ASSERT(!isVisible());
m_engine->aspectEngine()->registerAspect(name);
}
void Qt3DQuickWindow::setSource(const QUrl &source)
{
m_source = source;
}
Qt3DCore::Quick::QQmlAspectEngine *Qt3DQuickWindow::engine() const
{
return m_engine.data();
}
void Qt3DQuickWindow::setCameraAspectRatioMode(CameraAspectRatioMode mode)
{
if (m_cameraAspectRatioMode == mode)
return;
m_cameraAspectRatioMode = mode;
setCameraAspectModeHelper();
emit cameraAspectRatioModeChanged(mode);
}
Qt3DQuickWindow::CameraAspectRatioMode Qt3DQuickWindow::cameraAspectRatioMode() const
{
return m_cameraAspectRatioMode;
}
void Qt3DQuickWindow::showEvent(QShowEvent *e)
{
if (!m_initialized) {
// Connect to the QQmlAspectEngine's statusChanged signal so that when the QML is loaded
// and th eobjects hav ebeen instantiated, but before we set them on the QAspectEngine we
// can swoop in and set the window surface and camera on the framegraph and ensure the camera
// respects the window's aspect ratio
connect(m_engine.data(), &Qt3DCore::Quick::QQmlAspectEngine::sceneCreated,
this, &Qt3DQuickWindow::onSceneCreated);
m_engine->setSource(m_source);
// Set the QQmlIncubationController on the window
// to benefit from asynchronous incubation
m_engine->qmlEngine()->setIncubationController(QQuickWindow::incubationController());
m_initialized = true;
}
QQuickWindow::showEvent(e);
}
void Qt3DQuickWindow::onSceneCreated(QObject *rootObject)
{
Q_ASSERT(rootObject);
setWindowSurface(rootObject);
if (m_cameraAspectRatioMode == AutomaticAspectRatio) {
// Set aspect ratio of first camera to match the window
QList<Qt3DRender::QCamera *> cameras
= rootObject->findChildren<Qt3DRender::QCamera *>();
if (cameras.isEmpty()) {
qWarning() << "No camera found";
} else {
m_camera = cameras.first();
setCameraAspectModeHelper();
}
}
// Set ourselves up as a source of input events for the input aspect
Qt3DInput::QInputSettings *inputSettings = rootObject->findChild<Qt3DInput::QInputSettings *>();
if (inputSettings) {
inputSettings->setEventSource(this);
} else {
qWarning() << "No Input Settings found, keyboard and mouse events won't be handled";
}
}
void Qt3DQuickWindow::setWindowSurface(QObject *rootObject)
{
// Find surface selector in framegraph and set ourselves up as the
// render surface there
Qt3DRender::QFrameGraph *frameGraphComponent
= rootObject->findChild<Qt3DRender::QFrameGraph *>();
if (!frameGraphComponent) {
qWarning() << "No frame graph component found";
return;
}
Qt3DCore::QNode *frameGraphRoot = frameGraphComponent->activeFrameGraph();
if (!frameGraphRoot) {
qWarning() << "No active frame graph found";
return;
}
Qt3DRender::QRenderSurfaceSelector *surfaceSelector
= frameGraphRoot->findChild<Qt3DRender::QRenderSurfaceSelector *>();
if (!surfaceSelector) {
qWarning() << "No render surface selector found in frame graph";
return;
}
surfaceSelector->setWindow(this);
}
void Qt3DQuickWindow::setCameraAspectModeHelper()
{
switch (m_cameraAspectRatioMode) {
case AutomaticAspectRatio:
connect(this, &QWindow::widthChanged, this, &Qt3DQuickWindow::updateCameraAspectRatio);
connect(this, &QWindow::heightChanged, this, &Qt3DQuickWindow::updateCameraAspectRatio);
break;
case UserAspectRatio:
disconnect(this, &QWindow::widthChanged, this, &Qt3DQuickWindow::updateCameraAspectRatio);
disconnect(this, &QWindow::heightChanged, this, &Qt3DQuickWindow::updateCameraAspectRatio);
break;
}
}
void Qt3DQuickWindow::updateCameraAspectRatio()
{
if (m_camera) {
m_camera->setAspectRatio(static_cast<float>(width()) /
static_cast<float>(height()));
}
}
QT_END_NAMESPACE
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