qt-everywhere-src-5.15.1/qtbase/examples/widgets/gestures/imagegestures/main.cpp - orbit - Git at Google

 /****************************************************************************
 **
 ** Copyright (C) 2016 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 <QtWidgets>

 #include "mainwidget.h"

 static void showHelp(QCommandLineParser &parser, const QString errorMessage = QString())
 {
     QString text;
     QTextStream str(&text);
     str << "<html><head/><body>";
     if (!errorMessage.isEmpty())
         str << "<p>" << errorMessage << "</p>";
     str << "<pre>" << parser.helpText() << "</pre></body></html>";
     QMessageBox box(errorMessage.isEmpty() ? QMessageBox::Information : QMessageBox::Warning,
                     QGuiApplication::applicationDisplayName(), text,
                     QMessageBox::Ok);
     box.setTextInteractionFlags(Qt::TextBrowserInteraction);
     box.exec();
 }

 int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);
     QCoreApplication::setApplicationVersion(QT_VERSION_STR);
     QCoreApplication::setApplicationName(QStringLiteral("imagegestures"));
     QGuiApplication::setApplicationDisplayName(QStringLiteral("Image Gestures Example"));

     QCommandLineParser commandLineParser;
     const QCommandLineOption disablePanOption("no-pan", "Disable pan gesture");
     commandLineParser.addOption(disablePanOption);
     const QCommandLineOption disablePinchOption("no-pinch", "Disable pinch gesture");
     commandLineParser.addOption(disablePinchOption);
     const QCommandLineOption disableSwipeOption("no-swipe", "Disable swipe gesture");
     commandLineParser.addOption(disableSwipeOption);
     const QCommandLineOption helpOption = commandLineParser.addHelpOption();
     commandLineParser.addPositionalArgument(QStringLiteral("Directory"),
                                             QStringLiteral("Directory to display"));

     const QString description = QGuiApplication::applicationDisplayName()
         + QLatin1String("\n\nEnable \"debug\" on the logging category \"qt.examples.imagegestures\" in order to\n"
                         "in order to obtain verbose information about Qt's gesture event processing,\n"
                         "for example by setting the environment variables QT_LOGGING_RULES to\n"
                         "qt.examples.imagegestures.debug=true\n");
     commandLineParser.setApplicationDescription(description);

     commandLineParser.process(QCoreApplication::arguments());

     QStringList arguments = commandLineParser.positionalArguments();
     if (!arguments.isEmpty() && !QFileInfo(arguments.front()).isDir()) {
         showHelp(commandLineParser,
                  QLatin1Char('"') + QDir::toNativeSeparators(arguments.front())
                  + QStringLiteral("\" is not a directory."));
         return -1;
     }

     QVector<Qt::GestureType> gestures;
     if (!commandLineParser.isSet(disablePanOption))
         gestures << Qt::PanGesture;
     if (!commandLineParser.isSet(disablePinchOption))
         gestures << Qt::PinchGesture;
     if (!commandLineParser.isSet(disableSwipeOption))
         gestures << Qt::SwipeGesture;

     MainWidget w;
     w.grabGestures(gestures);
     w.show();

     if (arguments.isEmpty()) {
         const QStringList picturesLocations = QStandardPaths::standardLocations(QStandardPaths::PicturesLocation);
         const QString directory =
             QFileDialog::getExistingDirectory(&w, "Select image folder",
                                               picturesLocations.isEmpty() ? QString() : picturesLocations.front());
         if (directory.isEmpty())
             return 0;
         arguments.append(directory);
     }

     w.openDirectory(arguments.front());

     return app.exec();
 }
	/****************************************************************************
	**
	** Copyright (C) 2016 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 <QtWidgets>

	#include "mainwidget.h"

	static void showHelp(QCommandLineParser &parser, const QString errorMessage = QString())
	{
	QString text;
	QTextStream str(&text);
	str << "<html><head/><body>";
	if (!errorMessage.isEmpty())
	str << "<p>" << errorMessage << "</p>";
	str << "<pre>" << parser.helpText() << "</pre></body></html>";
	QMessageBox box(errorMessage.isEmpty() ? QMessageBox::Information : QMessageBox::Warning,
	QGuiApplication::applicationDisplayName(), text,
	QMessageBox::Ok);
	box.setTextInteractionFlags(Qt::TextBrowserInteraction);
	box.exec();
	}

	int main(int argc, char *argv[])
	{
	QApplication app(argc, argv);
	QCoreApplication::setApplicationVersion(QT_VERSION_STR);
	QCoreApplication::setApplicationName(QStringLiteral("imagegestures"));
	QGuiApplication::setApplicationDisplayName(QStringLiteral("Image Gestures Example"));

	QCommandLineParser commandLineParser;
	const QCommandLineOption disablePanOption("no-pan", "Disable pan gesture");
	commandLineParser.addOption(disablePanOption);
	const QCommandLineOption disablePinchOption("no-pinch", "Disable pinch gesture");
	commandLineParser.addOption(disablePinchOption);
	const QCommandLineOption disableSwipeOption("no-swipe", "Disable swipe gesture");
	commandLineParser.addOption(disableSwipeOption);
	const QCommandLineOption helpOption = commandLineParser.addHelpOption();
	commandLineParser.addPositionalArgument(QStringLiteral("Directory"),
	QStringLiteral("Directory to display"));

	const QString description = QGuiApplication::applicationDisplayName()
	+ QLatin1String("\n\nEnable \"debug\" on the logging category \"qt.examples.imagegestures\" in order to\n"
	"in order to obtain verbose information about Qt's gesture event processing,\n"
	"for example by setting the environment variables QT_LOGGING_RULES to\n"
	"qt.examples.imagegestures.debug=true\n");
	commandLineParser.setApplicationDescription(description);

	commandLineParser.process(QCoreApplication::arguments());

	QStringList arguments = commandLineParser.positionalArguments();
	if (!arguments.isEmpty() && !QFileInfo(arguments.front()).isDir()) {
	showHelp(commandLineParser,
	QLatin1Char('"') + QDir::toNativeSeparators(arguments.front())
	+ QStringLiteral("\" is not a directory."));
	return -1;
	}

	QVector<Qt::GestureType> gestures;
	if (!commandLineParser.isSet(disablePanOption))
	gestures << Qt::PanGesture;
	if (!commandLineParser.isSet(disablePinchOption))
	gestures << Qt::PinchGesture;
	if (!commandLineParser.isSet(disableSwipeOption))
	gestures << Qt::SwipeGesture;

	MainWidget w;
	w.grabGestures(gestures);
	w.show();

	if (arguments.isEmpty()) {
	const QStringList picturesLocations = QStandardPaths::standardLocations(QStandardPaths::PicturesLocation);
	const QString directory =
	QFileDialog::getExistingDirectory(&w, "Select image folder",
	picturesLocations.isEmpty() ? QString() : picturesLocations.front());
	if (directory.isEmpty())
	return 0;
	arguments.append(directory);
	}

	w.openDirectory(arguments.front());

	return app.exec();
	}