/**************************************************************************** ** ** Copyright (C) 2017 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples 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. 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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 "mainwindow.h" #include "fbitem.h" #include #include #include #include #include #include #include MainWindow::MainWindow(bool transparency) : m_currentView(0), m_currentRootObject(0), m_transparent(transparency) { QVBoxLayout *layout = new QVBoxLayout; QGroupBox *groupBox = new QGroupBox(tr("Type")); QVBoxLayout *vbox = new QVBoxLayout; m_radioView = new QRadioButton(tr("QQuickView in a window container (direct)")); m_radioWidget = new QRadioButton(tr("QQuickWidget (indirect through framebuffer objects)")); vbox->addWidget(m_radioWidget); vbox->addWidget(m_radioView); m_radioWidget->setChecked(true); m_state = Unknown; connect(m_radioWidget, &QRadioButton::toggled, this, &MainWindow::updateView); connect(m_radioView, &QRadioButton::toggled, this, &MainWindow::updateView); groupBox->setLayout(vbox); layout->addWidget(groupBox); m_checkboxMultiSample = new QCheckBox(tr("Multisample (4x)")); connect(m_checkboxMultiSample, &QCheckBox::toggled, this, &MainWindow::updateView); layout->addWidget(m_checkboxMultiSample); m_labelStatus = new QLabel; layout->addWidget(m_labelStatus); qmlRegisterType("fbitem", 1, 0, "FbItem"); QWidget *quickContainer = new QWidget; layout->addWidget(quickContainer); layout->setStretchFactor(quickContainer, 8); m_containerLayout = new QVBoxLayout; quickContainer->setLayout(m_containerLayout); // Add an overlay widget to demonstrate that it will _not_ work with // QQuickView, whereas it is perfectly fine with QQuickWidget. QPalette semiTransparent(QColor(255,0,0,128)); semiTransparent.setBrush(QPalette::Text, Qt::white); semiTransparent.setBrush(QPalette::WindowText, Qt::white); m_overlayLabel = new QLabel("This is a\nsemi-transparent\n overlay widget\nwhich is placed\non top\n of the Quick\ncontent.", this); m_overlayLabel->setAlignment(Qt::AlignHCenter | Qt::AlignTop); m_overlayLabel->setAutoFillBackground(true); m_overlayLabel->setPalette(semiTransparent); QFont f = font(); f.setPixelSize(QFontInfo(f).pixelSize()*2); f.setWeight(QFont::Bold); m_overlayLabel->setFont(f); m_overlayLabel->hide(); m_checkboxOverlayVisible = new QCheckBox(tr("Show widget overlay")); connect(m_checkboxOverlayVisible, &QCheckBox::toggled, m_overlayLabel, &QWidget::setVisible); layout->addWidget(m_checkboxOverlayVisible); setLayout(layout); updateView(); } void MainWindow::resizeEvent(QResizeEvent*) { int margin = width() / 10; int top = m_checkboxMultiSample->y(); int bottom = m_checkboxOverlayVisible->geometry().bottom(); m_overlayLabel->setGeometry(margin, top, width() - 2 * margin, bottom - top); } void MainWindow::switchTo(QWidget *view) { if (m_containerLayout->count()) m_containerLayout->takeAt(0); delete m_currentView; m_currentView = view; m_containerLayout->addWidget(m_currentView); m_currentView->setFocus(); } void MainWindow::updateView() { QSurfaceFormat format; format.setDepthBufferSize(16); format.setStencilBufferSize(8); if (m_transparent) format.setAlphaBufferSize(8); if (m_checkboxMultiSample->isChecked()) format.setSamples(4); State state = m_radioView->isChecked() ? UseWindow : UseWidget; if (m_format == format && m_state == state) return; m_format = format; m_state = state; QString text = m_currentRootObject ? m_currentRootObject->property("currentText").toString() : QStringLiteral("Hello Qt"); QUrl source("qrc:qquickviewcomparison/test.qml"); if (m_state == UseWindow) { QQuickView *quickView = new QQuickView; // m_transparent is not supported here since many systems have problems with semi-transparent child windows quickView->setFormat(m_format); quickView->setResizeMode(QQuickView::SizeRootObjectToView); connect(quickView, &QQuickView::statusChanged, this, &MainWindow::onStatusChangedView); connect(quickView, &QQuickView::sceneGraphError, this, &MainWindow::onSceneGraphError); quickView->setSource(source); m_currentRootObject = quickView->rootObject(); switchTo(QWidget::createWindowContainer(quickView)); } else if (m_state == UseWidget) { QQuickWidget *quickWidget = new QQuickWidget; if (m_transparent) quickWidget->setClearColor(Qt::transparent); quickWidget->setFormat(m_format); quickWidget->setResizeMode(QQuickWidget::SizeRootObjectToView); connect(quickWidget, &QQuickWidget::statusChanged, this, &MainWindow::onStatusChangedWidget); connect(quickWidget, &QQuickWidget::sceneGraphError, this, &MainWindow::onSceneGraphError); quickWidget->setSource(source); m_currentRootObject = quickWidget->rootObject(); switchTo(quickWidget); } if (m_currentRootObject) { m_currentRootObject->setProperty("currentText", text); m_currentRootObject->setProperty("multisample", m_checkboxMultiSample->isChecked()); if (!QCoreApplication::arguments().contains(QStringLiteral("--no_render_alpha"))) m_currentRootObject->setProperty("translucency", m_transparent); } m_overlayLabel->raise(); } void MainWindow::onStatusChangedView(QQuickView::Status status) { QString s; switch (status) { case QQuickView::Null: s = tr("Null"); break; case QQuickView::Ready: s = tr("Ready"); break; case QQuickView::Loading: s = tr("Loading"); break; case QQuickView::Error: s = tr("Error"); break; default: s = tr("Unknown"); break; } m_labelStatus->setText(tr("QQuickView status: %1").arg(s)); } void MainWindow::onStatusChangedWidget(QQuickWidget::Status status) { QString s; switch (status) { case QQuickWidget::Null: s = tr("Null"); break; case QQuickWidget::Ready: s = tr("Ready"); break; case QQuickWidget::Loading: s = tr("Loading"); break; case QQuickWidget::Error: s = tr("Error"); break; default: s = tr("Unknown"); break; } m_labelStatus->setText(tr("QQuickWidget status: %1").arg(s)); } void MainWindow::onSceneGraphError(QQuickWindow::SceneGraphError error, const QString &message) { m_labelStatus->setText(tr("Scenegraph error %1: %2").arg(error).arg(message)); }