Qt Quick Controls 1 - Calendar Example

Demonstrates the use of Calendar control.

The Calendar example displays a Calendar control and an events list for the selected date. It uses a C++ class to fetch the event details from an SQLite database. The example app uses a custom CalendarStyle to highlight the selected date and mark the dates that have events.

The following snippet from main.qml shows how the Calendar control is used in the app:

 Calendar {
     id: calendar
     width: (parent.width > parent.height ? parent.width * 0.6 - parent.spacing : parent.width)
     height: (parent.height > parent.width ? parent.height * 0.6 - parent.spacing : parent.height)
     frameVisible: true
     weekNumbersVisible: true
     selectedDate: new Date(2014, 0, 1)
     focus: true

     style: CalendarStyle {
         dayDelegate: Item {
                  ...
             }
        }
 }

The C++ class, SqlEventModel, inherits SqlQueryModel to create a database with dummy events for certain dates.

 SqlEventModel::SqlEventModel()
 {
     createConnection();
 }

 void SqlEventModel::createConnection()
 {
     QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
     db.setDatabaseName(":memory:");
     if (!db.open()) {
         qFatal("Cannot open database");
         return;
     }

     QSqlQuery query;
     // We store the time as seconds because it's easier to query.
     query.exec("create table Event (name TEXT, startDate DATE, startTime INT, endDate DATE, endTime INT)");
     query.exec("insert into Event values('Grocery shopping', '2014-01-01', 36000, '2014-01-01', 39600)");
     query.exec("insert into Event values('Ice skating', '2014-01-01', 57600, '2014-01-01', 61200)");
     query.exec("insert into Event values('Doctor''s appointment', '2014-01-15', 57600, '2014-01-15', 63000)");
     query.exec("insert into Event values('Conference', '2014-01-24', 32400, '2014-01-28', 61200)");

     return;
 }

In main.qml, the SqlEventModel custom type is used to get the list of events to mark the dates on the calendar.

 SqlEventModel {
     id: eventModel
 }

 Calendar {
     ...
     style: CalendarStyle {
         dayDelegate: Item {
             ...
             Image {
                 visible: eventModel.eventsForDate(styleData.date).length > 0
                 ...
                 source: "qrc:/images/eventindicator.png"
             }
         }
     }
 }

The app uses a Flow type to position the items, and manipulates the items' width and height based on the orientation change on mobile devices.

 Calendar {
     id: calendar
     width: (parent.width > parent.height ? parent.width * 0.6 - parent.spacing : parent.width)
     height: (parent.height > parent.width ? parent.height * 0.6 - parent.spacing : parent.height)
 }

 Rectangle {
     width: (parent.width > parent.height ? parent.width * 0.4 - parent.spacing : parent.width)
     height: (parent.height > parent.width ? parent.height * 0.4 - parent.spacing : parent.height)
     border.color: Qt.darker(color, 1.2)

     ListView {
         ...
     }
 }

Running the Example

To run the example from Qt Creator, open the Welcome mode and select the example from Examples. For more information, visit Building and Running an Example.

Files:

Images:

calendar/images/eventindicator.png

Contents

Qt Quick Controls 1 - Calendar Example

Running the Example