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Diffstat (limited to 'examples/labs/calendar/main.cpp')
| -rw-r--r-- | examples/labs/calendar/main.cpp | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/examples/labs/calendar/main.cpp b/examples/labs/calendar/main.cpp new file mode 100644 index 00000000..651a51ec --- /dev/null +++ b/examples/labs/calendar/main.cpp @@ -0,0 +1,233 @@ +/**************************************************************************** +** +** 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 description MEMBER description NOTIFY descriptionChanged) + Q_PROPERTY(QDateTime start MEMBER start NOTIFY startChanged) + Q_PROPERTY(QDateTime end MEMBER end NOTIFY endChanged) + +public: + explicit Event(const QString &description, QObject *parent = 0) : + QObject(parent), + description(description) + { + + } + + QString description; + QDateTime start; + QDateTime end; + +signals: + void descriptionChanged(); + void startChanged(); + void endChanged(); +}; + +static void addEvent(const QString &description, const QDateTime &start, qint64 duration = 0) +{ + QSqlQuery query; + QDateTime end = start.addSecs(duration); + if (!query.exec(QStringLiteral("INSERT INTO Event (description, start, end) VALUES ('%1', %2, %3)") + .arg(description).arg(start.toMSecsSinceEpoch()).arg(end.toMSecsSinceEpoch()))) { + qWarning() << query.lastError(); + } +} + +// create an in-memory SQLITE database +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 (description TEXT, start BIGINT, end BIGINT)"); + + const QDate current = QDate::currentDate(); + addEvent("Job interview", QDateTime(current.addDays(-19), QTime(12, 0))); + addEvent("Grocery shopping", QDateTime(current.addDays(-14), QTime(18, 0))); + addEvent("Ice skating", QDateTime(current.addDays(-14), QTime(20, 0)), 5400); + addEvent("Dentist''s appointment", QDateTime(current.addDays(-8), QTime(14, 0)), 1800); + addEvent("Cross-country skiing", QDateTime(current.addDays(1), QTime(19, 30)), 3600); + addEvent("Conference", QDateTime(current.addDays(10), QTime(9, 0)), 432000); + addEvent("Hairdresser", QDateTime(current.addDays(19), QTime(13, 0))); + addEvent("Doctor''s appointment", QDateTime(current.addDays(21), QTime(16, 0))); + addEvent("Vacation", QDateTime(current.addDays(35), QTime(0, 0)), 604800); +} + +class SqlEventModel : public QSqlTableModel +{ + Q_OBJECT + Q_PROPERTY(QDate min READ min CONSTANT) + Q_PROPERTY(QDate max READ max CONSTANT) + Q_PROPERTY(QDate date READ date WRITE setDate NOTIFY dateChanged FINAL) + Q_PROPERTY(int rowCount READ rowCount NOTIFY rowCountChanged) + +public: + SqlEventModel(QObject *parent = 0) : + QSqlTableModel(parent, QSqlDatabase::database(":memory:")) + { + connect(this, SIGNAL(rowsInserted(QModelIndex,int,int)), this, SIGNAL(rowCountChanged())); + connect(this, SIGNAL(rowsRemoved(QModelIndex,int,int)), this, SIGNAL(rowCountChanged())); + + setTable("Event"); + setEditStrategy(QSqlTableModel::OnManualSubmit); + select(); + + setDate(QDate::currentDate()); + } + + 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(); + } + + QDate date() const + { + return mDate; + } + + void setDate(const QDate &date) + { + if (date != mDate) { + mDate = date; + + qint64 from = QDateTime(mDate, QTime(0, 0)).toMSecsSinceEpoch(); + qint64 to = QDateTime(mDate, QTime(23, 59)).toMSecsSinceEpoch(); + + setFilter(QStringLiteral("start <= %1 AND end >= %2").arg(to).arg(from)); + + emit dateChanged(); + } + } + + enum { + DescriptionRole = Qt::UserRole, + StartDateRole, + EndDateRole + }; + + QHash<int,QByteArray> roleNames() const Q_DECL_OVERRIDE + { + QHash<int,QByteArray> names; + names[DescriptionRole] = "description"; + names[StartDateRole] = "start"; + names[EndDateRole] = "end"; + return names; + } + + QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const Q_DECL_OVERRIDE + { + if (role < Qt::UserRole) + return QSqlTableModel::data(index, role); + + int columnIndex = role - DescriptionRole; + QModelIndex modelIndex = this->index(index.row(), columnIndex); + QVariant eventData = QSqlTableModel::data(modelIndex, Qt::DisplayRole); + if (role == DescriptionRole) + return eventData; + + return QDateTime::fromMSecsSinceEpoch(eventData.toLongLong()); + } + + Q_INVOKABLE void addEvent(const QString &description, const QDateTime &date) + { + const int row = rowCount(); + insertRows(row, 1); + setData(index(row, 0), description); + setData(index(row, 1), date.toMSecsSinceEpoch()); + setData(index(row, 2), date.toMSecsSinceEpoch()); + submitAll(); + } + + Q_INVOKABLE void removeEvent(int modelRow) + { + if (modelRow < 0 || modelRow >= rowCount()) { + qWarning() << "Invalid model row:" << modelRow; + return; + } + + removeRows(modelRow, 1); + submitAll(); + } + +signals: + void dateChanged(); + void rowCountChanged(); + +private: + // The date to show events for. + QDate mDate; +}; + +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")); + if (engine.rootObjects().isEmpty()) + return -1; + return app.exec(); +} + +#include "main.moc" |