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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 <QtGui>
#include <QtQml>
#include <QtSql>
class Event : public QObject
{
Q_OBJECT
Q_PROPERTY(QString name MEMBER name NOTIFY nameChanged)
Q_PROPERTY(QDateTime start MEMBER start NOTIFY startChanged)
Q_PROPERTY(QDateTime end MEMBER end NOTIFY endChanged)
public:
explicit Event(const QString &name, QObject *parent = 0) : QObject(parent), name(name) { }
QString name;
QDateTime start;
QDateTime end;
signals:
void nameChanged();
void startChanged();
void endChanged();
};
class SqlEventModel : public QSqlQueryModel
{
Q_OBJECT
Q_PROPERTY(QDate min READ min CONSTANT)
Q_PROPERTY(QDate max READ max CONSTANT)
public:
SqlEventModel(QObject *parent = 0) : QSqlQueryModel(parent) { }
QDate min() const
{
QSqlQuery query(QStringLiteral("SELECT MIN(start) FROM Event"));
if (query.next())
return QDateTime::fromMSecsSinceEpoch(query.value(0).toLongLong()).date();
return QDate();
}
QDate max() const
{
QSqlQuery query(QStringLiteral("SELECT MAX(end) FROM Event"));
if (query.next())
return QDateTime::fromMSecsSinceEpoch(query.value(0).toLongLong()).date();
return QDate();
}
Q_INVOKABLE QList<QObject*> eventsForDate(const QDate &date)
{
qint64 from = QDateTime(date, QTime(0, 0)).toMSecsSinceEpoch();
qint64 to = QDateTime(date, QTime(23, 59)).toMSecsSinceEpoch();
QSqlQuery query;
if (!query.exec(QStringLiteral("SELECT * FROM Event WHERE start <= %1 AND end >= %2").arg(to).arg(from)))
qFatal("Query failed");
QList<QObject*> events;
while (query.next()) {
Event *event = new Event(query.value("name").toString(), this);
event->start = QDateTime::fromMSecsSinceEpoch(query.value("start").toLongLong());
event->end = QDateTime::fromMSecsSinceEpoch(query.value("end").toLongLong());
events.append(event);
}
return events;
}
};
// create an in-memory SQLITE database
static bool addEvent(QSqlQuery* query, const QString &name, const QDateTime &start, qint64 duration = 0)
{
QDateTime end = start.addSecs(duration);
return query->exec(QStringLiteral("insert into Event values('%1', %2, %3)").arg(name)
.arg(start.toMSecsSinceEpoch())
.arg(end.toMSecsSinceEpoch()));
}
static void createDatabase()
{
QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName(":memory:");
if (!db.open()) {
qFatal("Cannot open database");
return;
}
QSqlQuery query;
query.exec("create table if not exists Event (name TEXT, start BIGINT, end BIGINT)");
const QDate current = QDate::currentDate();
addEvent(&query, "Job interview", QDateTime(current.addDays(-19), QTime(12, 0)));
addEvent(&query, "Grocery shopping", QDateTime(current.addDays(-14), QTime(18, 0)));
addEvent(&query, "Ice skating", QDateTime(current.addDays(-14), QTime(20, 0)), 5400);
addEvent(&query, "Dentist's appointment", QDateTime(current.addDays(-8), QTime(14, 0)), 1800);
addEvent(&query, "Cross-country skiing", QDateTime(current.addDays(1), QTime(19, 30)), 3600);
addEvent(&query, "Conference", QDateTime(current.addDays(10), QTime(9, 0)), 432000);
addEvent(&query, "Hairdresser", QDateTime(current.addDays(19), QTime(13, 0)));
addEvent(&query, "Doctor's appointment", QDateTime(current.addDays(21), QTime(16, 0)));
addEvent(&query, "Vacation", QDateTime(current.addDays(35), QTime(0, 0)), 604800);
}
int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);
createDatabase();
qmlRegisterType<SqlEventModel>("io.qt.examples.calendar", 1, 0, "SqlEventModel");
QQmlApplicationEngine engine;
engine.load(QUrl("qrc:/main.qml"));
return app.exec();
}
#include "main.moc"
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