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/****************************************************************************
**
** 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. 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 <QQuickWidget>
#include <QQuickItem>
#include <QQmlError>
#include <QtWidgets>
#include "fbitem.h"
static bool optMultipleSample = false;
static bool optCoreProfile = false;
class MainWindow : public QMainWindow {
Q_OBJECT
public:
MainWindow();
private slots:
void quickWidgetStatusChanged(QQuickWidget::Status);
void sceneGraphError(QQuickWindow::SceneGraphError error, const QString &message);
void grabFramebuffer();
void renderToPixmap();
void grabToImage();
void createQuickWidgetsInTabs(QMdiArea *mdiArea);
private:
QQuickWidget *m_quickWidget;
};
MainWindow::MainWindow()
: m_quickWidget(new QQuickWidget)
{
QSurfaceFormat format;
if (optCoreProfile) {
format.setVersion(4, 4);
format.setProfile(QSurfaceFormat::CoreProfile);
}
if (optMultipleSample)
format.setSamples(4);
m_quickWidget->setFormat(format);
QMdiArea *centralWidget = new QMdiArea;
QLCDNumber *lcd = new QLCDNumber;
lcd->display(1337);
lcd->setMinimumSize(250,100);
centralWidget->addSubWindow(lcd);
QUrl source("qrc:quickwidget/rotatingsquare.qml");
connect(m_quickWidget, &QQuickWidget::statusChanged,
this, &MainWindow::quickWidgetStatusChanged);
connect(m_quickWidget, &QQuickWidget::sceneGraphError,
this, &MainWindow::sceneGraphError);
m_quickWidget->resize(300,300);
m_quickWidget->setResizeMode(QQuickWidget::SizeRootObjectToView );
m_quickWidget->setSource(source);
centralWidget->addSubWindow(m_quickWidget);
setCentralWidget(centralWidget);
QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
fileMenu->addAction(tr("Grab framebuffer"), this, &MainWindow::grabFramebuffer);
fileMenu->addAction(tr("Render to pixmap"), this, &MainWindow::renderToPixmap);
fileMenu->addAction(tr("Grab via grabToImage"), this, &MainWindow::grabToImage);
fileMenu->addAction(tr("Quit"), qApp, &QCoreApplication::quit);
QMenu *windowMenu = menuBar()->addMenu(tr("&Window"));
windowMenu->addAction(tr("Add tab widget"), this,
[this, centralWidget] { createQuickWidgetsInTabs(centralWidget); });
}
void MainWindow::createQuickWidgetsInTabs(QMdiArea *mdiArea)
{
QTabWidget *tabWidget = new QTabWidget;
const QSize size(400, 400);
QQuickWidget *w = new QQuickWidget;
w->resize(size);
w->setResizeMode(QQuickWidget::SizeRootObjectToView);
w->setSource(QUrl("qrc:quickwidget/rotatingsquaretab.qml"));
tabWidget->addTab(w, tr("Plain Quick content"));
w = new QQuickWidget;
w->resize(size);
w->setResizeMode(QQuickWidget::SizeRootObjectToView);
w->setSource(QUrl("qrc:quickwidget/customgl.qml"));
tabWidget->addTab(w, tr("Custom OpenGL drawing"));
mdiArea->addSubWindow(tabWidget);
tabWidget->show();
}
void MainWindow::quickWidgetStatusChanged(QQuickWidget::Status status)
{
if (status == QQuickWidget::Error) {
QStringList errors;
const auto widgetErrors = m_quickWidget->errors();
for (const QQmlError &error : widgetErrors)
errors.append(error.toString());
statusBar()->showMessage(errors.join(QStringLiteral(", ")));
}
}
void MainWindow::sceneGraphError(QQuickWindow::SceneGraphError, const QString &message)
{
statusBar()->showMessage(message);
}
template<class T> void saveToFile(QWidget *parent, T *saveable)
{
QFileDialog fd(parent);
fd.setAcceptMode(QFileDialog::AcceptSave);
fd.setDefaultSuffix("png");
fd.selectFile("test.png");
if (fd.exec() == QDialog::Accepted)
saveable->save(fd.selectedFiles().first());
}
void MainWindow::grabFramebuffer()
{
QImage image = m_quickWidget->grabFramebuffer();
saveToFile(this, &image);
}
void MainWindow::renderToPixmap()
{
QPixmap pixmap(m_quickWidget->size());
m_quickWidget->render(&pixmap);
saveToFile(this, &pixmap);
}
void MainWindow::grabToImage()
{
QFileDialog fd(this);
fd.setAcceptMode(QFileDialog::AcceptSave);
fd.setDefaultSuffix("png");
fd.selectFile("test_grabToImage.png");
if (fd.exec() == QDialog::Accepted) {
QMetaObject::invokeMethod(m_quickWidget->rootObject(), "performLayerBasedGrab",
Q_ARG(QVariant, fd.selectedFiles().first()));
}
}
int main(int argc, char **argv)
{
QApplication app(argc, argv);
QCoreApplication::setApplicationName("Qt QQuickWidget Example");
QCoreApplication::setOrganizationName("QtProject");
QCoreApplication::setApplicationVersion(QT_VERSION_STR);
QCommandLineParser parser;
parser.setApplicationDescription(QCoreApplication::applicationName());
parser.addHelpOption();
parser.addVersionOption();
QCommandLineOption multipleSampleOption("multisample", "Multisampling");
parser.addOption(multipleSampleOption);
QCommandLineOption coreProfileOption("coreprofile", "Use core profile");
parser.addOption(coreProfileOption);
parser.process(app);
optMultipleSample = parser.isSet(multipleSampleOption);
optCoreProfile = parser.isSet(coreProfileOption);
qmlRegisterType<FbItem>("QuickWidgetExample", 1, 0, "FbItem");
MainWindow mainWindow;
mainWindow.show();
return app.exec();
}
#include "main.moc"
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