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| ** This file is part of the examples of the Qt Toolkit. |
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| |
| #ifdef QT_WIDGETS_LIB |
| #include <QtWidgets/QApplication> |
| #else |
| #include <QtGui/QGuiApplication> |
| #endif |
| #include <QtQml/QQmlApplicationEngine> |
| #include <QtQml/QQmlContext> |
| #include <QtQuick/QQuickWindow> |
| #include <QtGui/QImageReader> |
| #include <QtCore/QCommandLineParser> |
| #include <QtCore/QCommandLineOption> |
| #include <QtCore/QDebug> |
| #include <QtCore/QDir> |
| #include <QtCore/QMimeDatabase> |
| #include <QtCore/QStandardPaths> |
| #include <QtCore/QUrl> |
| |
| static QStringList imageNameFilters() |
| { |
| QStringList result; |
| QMimeDatabase mimeDatabase; |
| const auto supportedMimeTypes = QImageReader::supportedMimeTypes(); |
| for (const QByteArray &m : supportedMimeTypes) { |
| const auto suffixes = mimeDatabase.mimeTypeForName(m).suffixes(); |
| for (const QString &suffix : suffixes) |
| result.append(QLatin1String("*.") + suffix); |
| } |
| return result; |
| } |
| |
| int main(int argc, char* argv[]) |
| { |
| // The reason to use QApplication is that QWidget-based dialogs |
| // are the native dialogs on Qt-based platforms like KDE, |
| // but they cannot be instantiated if this is a QGuiApplication. |
| #ifdef QT_WIDGETS_LIB |
| QApplication app(argc, argv); |
| #else |
| QGuiApplication app(argc, argv); |
| #endif |
| QQuickWindow::setDefaultAlphaBuffer(true); |
| |
| QCoreApplication::setApplicationName(QStringLiteral("Photosurface")); |
| QCoreApplication::setOrganizationName(QStringLiteral("QtProject")); |
| QCoreApplication::setApplicationVersion(QLatin1String(QT_VERSION_STR)); |
| QCommandLineParser parser; |
| parser.setApplicationDescription(QStringLiteral("Qt Quick Demo - Photo Surface")); |
| parser.addHelpOption(); |
| parser.addVersionOption(); |
| parser.addPositionalArgument(QStringLiteral("directory"), |
| QStringLiteral("The image directory or URL to show.")); |
| parser.process(app); |
| |
| QUrl initialUrl; |
| if (!parser.positionalArguments().isEmpty()) { |
| initialUrl = QUrl::fromUserInput(parser.positionalArguments().first(), |
| QDir::currentPath(), QUrl::AssumeLocalFile); |
| if (!initialUrl.isValid()) { |
| qWarning().nospace() << "Invalid argument: \"" |
| << parser.positionalArguments().first() << "\": " << initialUrl.errorString(); |
| return 1; |
| } |
| } |
| |
| const QStringList nameFilters = imageNameFilters(); |
| |
| QQmlApplicationEngine engine; |
| QQmlContext *context = engine.rootContext(); |
| |
| QUrl picturesLocationUrl = QUrl::fromLocalFile(QDir::homePath()); |
| const QStringList picturesLocations = QStandardPaths::standardLocations(QStandardPaths::PicturesLocation); |
| if (!picturesLocations.isEmpty()) { |
| picturesLocationUrl = QUrl::fromLocalFile(picturesLocations.first()); |
| if (initialUrl.isEmpty() |
| && !QDir(picturesLocations.first()).entryInfoList(nameFilters, QDir::Files).isEmpty()) { |
| initialUrl = picturesLocationUrl; |
| } |
| } |
| |
| context->setContextProperty(QStringLiteral("contextPicturesLocation"), picturesLocationUrl); |
| context->setContextProperty(QStringLiteral("contextInitialUrl"), initialUrl); |
| context->setContextProperty(QStringLiteral("contextImageNameFilters"), nameFilters); |
| |
| engine.load(QUrl("qrc:///photosurface.qml")); |
| if (engine.rootObjects().isEmpty()) |
| return -1; |
| |
| return app.exec(); |
| } |