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50 | |
51 | #include <QQuickWidget> |
52 | #include <QQuickItem> |
53 | #include <QQmlError> |
54 | #include <QtWidgets> |
55 | #include "fbitem.h" |
56 | |
57 | static bool optMultipleSample = false; |
58 | static bool optCoreProfile = false; |
59 | |
60 | class MainWindow : public QMainWindow { |
61 | Q_OBJECT |
62 | public: |
63 | MainWindow(); |
64 | |
65 | private slots: |
66 | void quickWidgetStatusChanged(QQuickWidget::Status); |
67 | void sceneGraphError(QQuickWindow::SceneGraphError error, const QString &message); |
68 | void grabFramebuffer(); |
69 | void renderToPixmap(); |
70 | void grabToImage(); |
71 | void createQuickWidgetsInTabs(QMdiArea *mdiArea); |
72 | |
73 | private: |
74 | QQuickWidget *m_quickWidget; |
75 | }; |
76 | |
77 | MainWindow::MainWindow() |
78 | : m_quickWidget(new QQuickWidget) |
79 | { |
80 | QSurfaceFormat format; |
81 | if (optCoreProfile) { |
82 | format.setVersion(major: 4, minor: 4); |
83 | format.setProfile(QSurfaceFormat::CoreProfile); |
84 | } |
85 | if (optMultipleSample) |
86 | format.setSamples(4); |
87 | m_quickWidget->setFormat(format); |
88 | |
89 | QMdiArea *centralWidget = new QMdiArea; |
90 | |
91 | QLCDNumber *lcd = new QLCDNumber; |
92 | lcd->display(num: 1337); |
93 | lcd->setMinimumSize(minw: 250,minh: 100); |
94 | centralWidget->addSubWindow(widget: lcd); |
95 | |
96 | QUrl source("qrc:quickwidget/rotatingsquare.qml" ); |
97 | |
98 | connect(sender: m_quickWidget, signal: &QQuickWidget::statusChanged, |
99 | receiver: this, slot: &MainWindow::quickWidgetStatusChanged); |
100 | connect(sender: m_quickWidget, signal: &QQuickWidget::sceneGraphError, |
101 | receiver: this, slot: &MainWindow::sceneGraphError); |
102 | m_quickWidget->resize(w: 300,h: 300); |
103 | m_quickWidget->setResizeMode(QQuickWidget::SizeRootObjectToView ); |
104 | m_quickWidget->setSource(source); |
105 | |
106 | centralWidget->addSubWindow(widget: m_quickWidget); |
107 | |
108 | setCentralWidget(centralWidget); |
109 | |
110 | QMenu * = menuBar()->addMenu(title: tr(s: "&File" )); |
111 | fileMenu->addAction(text: tr(s: "Grab framebuffer" ), object: this, slot: &MainWindow::grabFramebuffer); |
112 | fileMenu->addAction(text: tr(s: "Render to pixmap" ), object: this, slot: &MainWindow::renderToPixmap); |
113 | fileMenu->addAction(text: tr(s: "Grab via grabToImage" ), object: this, slot: &MainWindow::grabToImage); |
114 | fileMenu->addAction(text: tr(s: "Quit" ), qApp, slot: &QCoreApplication::quit); |
115 | |
116 | QMenu * = menuBar()->addMenu(title: tr(s: "&Window" )); |
117 | windowMenu->addAction(text: tr(s: "Add tab widget" ), object: this, |
118 | slot: [this, centralWidget] { createQuickWidgetsInTabs(mdiArea: centralWidget); }); |
119 | } |
120 | |
121 | void MainWindow::createQuickWidgetsInTabs(QMdiArea *mdiArea) |
122 | { |
123 | QTabWidget *tabWidget = new QTabWidget; |
124 | |
125 | const QSize size(400, 400); |
126 | |
127 | QQuickWidget *w = new QQuickWidget; |
128 | w->resize(size); |
129 | w->setResizeMode(QQuickWidget::SizeRootObjectToView); |
130 | w->setSource(QUrl("qrc:quickwidget/rotatingsquaretab.qml" )); |
131 | |
132 | tabWidget->addTab(widget: w, tr(s: "Plain Quick content" )); |
133 | |
134 | w = new QQuickWidget; |
135 | w->resize(size); |
136 | w->setResizeMode(QQuickWidget::SizeRootObjectToView); |
137 | w->setSource(QUrl("qrc:quickwidget/customgl.qml" )); |
138 | |
139 | tabWidget->addTab(widget: w, tr(s: "Custom OpenGL drawing" )); |
140 | |
141 | mdiArea->addSubWindow(widget: tabWidget); |
142 | tabWidget->show(); |
143 | } |
144 | |
145 | void MainWindow::quickWidgetStatusChanged(QQuickWidget::Status status) |
146 | { |
147 | if (status == QQuickWidget::Error) { |
148 | QStringList errors; |
149 | const auto widgetErrors = m_quickWidget->errors(); |
150 | for (const QQmlError &error : widgetErrors) |
151 | errors.append(t: error.toString()); |
152 | statusBar()->showMessage(text: errors.join(QStringLiteral(", " ))); |
153 | } |
154 | } |
155 | |
156 | void MainWindow::sceneGraphError(QQuickWindow::SceneGraphError, const QString &message) |
157 | { |
158 | statusBar()->showMessage(text: message); |
159 | } |
160 | |
161 | template<class T> void saveToFile(QWidget *parent, T *saveable) |
162 | { |
163 | QFileDialog fd(parent); |
164 | fd.setAcceptMode(QFileDialog::AcceptSave); |
165 | fd.setDefaultSuffix("png" ); |
166 | fd.selectFile(filename: "test.png" ); |
167 | if (fd.exec() == QDialog::Accepted) |
168 | saveable->save(fd.selectedFiles().first()); |
169 | } |
170 | |
171 | void MainWindow::grabFramebuffer() |
172 | { |
173 | QImage image = m_quickWidget->grabFramebuffer(); |
174 | saveToFile(parent: this, saveable: &image); |
175 | } |
176 | |
177 | void MainWindow::renderToPixmap() |
178 | { |
179 | QPixmap pixmap(m_quickWidget->size()); |
180 | m_quickWidget->render(target: &pixmap); |
181 | saveToFile(parent: this, saveable: &pixmap); |
182 | } |
183 | |
184 | void MainWindow::grabToImage() |
185 | { |
186 | QFileDialog fd(this); |
187 | fd.setAcceptMode(QFileDialog::AcceptSave); |
188 | fd.setDefaultSuffix("png" ); |
189 | fd.selectFile(filename: "test_grabToImage.png" ); |
190 | if (fd.exec() == QDialog::Accepted) { |
191 | QMetaObject::invokeMethod(obj: m_quickWidget->rootObject(), member: "performLayerBasedGrab" , |
192 | Q_ARG(QVariant, fd.selectedFiles().first())); |
193 | } |
194 | } |
195 | |
196 | int main(int argc, char **argv) |
197 | { |
198 | QApplication app(argc, argv); |
199 | |
200 | QCoreApplication::setApplicationName("Qt QQuickWidget Example" ); |
201 | QCoreApplication::setOrganizationName("QtProject" ); |
202 | QCoreApplication::setApplicationVersion(QT_VERSION_STR); |
203 | QCommandLineParser parser; |
204 | parser.setApplicationDescription(QCoreApplication::applicationName()); |
205 | parser.addHelpOption(); |
206 | parser.addVersionOption(); |
207 | QCommandLineOption multipleSampleOption("multisample" , "Multisampling" ); |
208 | parser.addOption(commandLineOption: multipleSampleOption); |
209 | QCommandLineOption coreProfileOption("coreprofile" , "Use core profile" ); |
210 | parser.addOption(commandLineOption: coreProfileOption); |
211 | |
212 | parser.process(app); |
213 | |
214 | optMultipleSample = parser.isSet(option: multipleSampleOption); |
215 | optCoreProfile = parser.isSet(option: coreProfileOption); |
216 | |
217 | MainWindow mainWindow; |
218 | mainWindow.show(); |
219 | |
220 | return app.exec(); |
221 | } |
222 | |
223 | #include "main.moc" |
224 | |