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<li><a href="qtquickcontrols-index.html">Qt Quick Controls</a></li>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#running-the-example">Running the Example</a></li>
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<h1 class="title">Qt Quick Controls - Calendar Example</h1>
<span class="subtitle"></span>
<!-- $$$calendar-description -->
<div class="descr"> <a name="details"></a>
<p>Demonstrates the use of Calendar control<p class="centerAlign"><img src="images/qtquickcontrols-example-calendar.png" alt="" /></p><p>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.</p>
<p>The following snippet from <i>main.qml</i> shows how the Calendar control is used in the app:</p>
<pre class="cpp">Calendar {
id: calendar
width: (parent<span class="operator">.</span>width <span class="operator">></span> parent<span class="operator">.</span>height <span class="operator">?</span> parent<span class="operator">.</span>width <span class="operator">*</span> <span class="number">0.6</span> <span class="operator">-</span> parent<span class="operator">.</span>spacing : parent<span class="operator">.</span>width)
height: (parent<span class="operator">.</span>height <span class="operator">></span> parent<span class="operator">.</span>width <span class="operator">?</span> parent<span class="operator">.</span>height <span class="operator">*</span> <span class="number">0.6</span> <span class="operator">-</span> parent<span class="operator">.</span>spacing : parent<span class="operator">.</span>height)
frameVisible: <span class="keyword">true</span>
weekNumbersVisible: <span class="keyword">true</span>
selectedDate: <span class="keyword">new</span> Date(<span class="number">2014</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span>)
focus: <span class="keyword">true</span>
style: CalendarStyle {
dayDelegate: Item {
<span class="operator">.</span><span class="operator">.</span><span class="operator">.</span>
}
}
}</pre>
<p>The C++ class, SqlEventModel, inherits SqlQueryModel to create a database with dummy events for certain dates.</p>
<pre class="qml">SqlEventModel<span class="operator">::</span>SqlEventModel() :
<span class="type">QSqlQueryModel</span>()
{
createConnection();
}
<span class="type">void</span> SqlEventModel<span class="operator">::</span>createConnection()
{
<span class="type">QSqlDatabase</span> db <span class="operator">=</span> <span class="type">QSqlDatabase</span><span class="operator">::</span>addDatabase(<span class="string">"QSQLITE"</span>);
db<span class="operator">.</span>setDatabaseName(<span class="string">":memory:"</span>);
<span class="keyword">if</span> (<span class="operator">!</span>db<span class="operator">.</span>open()) {
qFatal(<span class="string">"Cannot open database"</span>);
<span class="keyword">return</span>;
}
<span class="type">QSqlQuery</span> query;
<span class="comment">// We store the time as seconds because it's easier to query.</span>
query<span class="operator">.</span>exec(<span class="string">"create table Event (name TEXT, startDate DATE, startTime INT, endDate DATE, endTime INT)"</span>);
query<span class="operator">.</span>exec(<span class="string">"insert into Event values('Grocery shopping', '2014-01-01', 36000, '2014-01-01', 39600)"</span>);
query<span class="operator">.</span>exec(<span class="string">"insert into Event values('Ice skating', '2014-01-01', 57600, '2014-01-01', 61200)"</span>);
query<span class="operator">.</span>exec(<span class="string">"insert into Event values('Doctor''s appointment', '2014-01-15', 57600, '2014-01-15', 63000)"</span>);
query<span class="operator">.</span>exec(<span class="string">"insert into Event values('Conference', '2014-01-24', 32400, '2014-01-28', 61200)"</span>);
<span class="keyword">return</span>;
}</pre>
<p>In <i>main.qml</i>, the SqlEventModel custom type is used to get the list of events to mark the dates on the calendar.</p>
<pre class="cpp">SqlEventModel {
id: eventModel
}
Calendar {
<span class="operator">.</span><span class="operator">.</span><span class="operator">.</span>
style: CalendarStyle {
dayDelegate: Item {
<span class="operator">.</span><span class="operator">.</span><span class="operator">.</span>
Image {
visible: eventModel<span class="operator">.</span>eventsForDate(styleData<span class="operator">.</span>date)<span class="operator">.</span>length <span class="operator">></span> <span class="number">0</span>
<span class="operator">.</span><span class="operator">.</span><span class="operator">.</span>
source: <span class="string">"qrc:/images/eventindicator.png"</span>
}
}
}
}</pre>
<p>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.</p>
<pre class="cpp">Calendar {
id: calendar
width: (parent<span class="operator">.</span>width <span class="operator">></span> parent<span class="operator">.</span>height <span class="operator">?</span> parent<span class="operator">.</span>width <span class="operator">*</span> <span class="number">0.6</span> <span class="operator">-</span> parent<span class="operator">.</span>spacing : parent<span class="operator">.</span>width)
height: (parent<span class="operator">.</span>height <span class="operator">></span> parent<span class="operator">.</span>width <span class="operator">?</span> parent<span class="operator">.</span>height <span class="operator">*</span> <span class="number">0.6</span> <span class="operator">-</span> parent<span class="operator">.</span>spacing : parent<span class="operator">.</span>height)
}
Rectangle {
width: (parent<span class="operator">.</span>width <span class="operator">></span> parent<span class="operator">.</span>height <span class="operator">?</span> parent<span class="operator">.</span>width <span class="operator">*</span> <span class="number">0.4</span> <span class="operator">-</span> parent<span class="operator">.</span>spacing : parent<span class="operator">.</span>width)
height: (parent<span class="operator">.</span>height <span class="operator">></span> parent<span class="operator">.</span>width <span class="operator">?</span> parent<span class="operator">.</span>height <span class="operator">*</span> <span class="number">0.4</span> <span class="operator">-</span> parent<span class="operator">.</span>spacing : parent<span class="operator">.</span>height)
border<span class="operator">.</span>color: <span class="type"><a href="../qtqml/qml-qtqml-qt.html">Qt</a></span><span class="operator">.</span>darker(color<span class="operator">,</span> <span class="number">1.2</span>)
ListView {
<span class="operator">.</span><span class="operator">.</span><span class="operator">.</span>
}
}</pre>
<a name="running-the-example"></a>
<h2>Running the Example</h2>
<p>To run the example from <a href="http://qt-project.org/doc/qtcreator/index.html">Qt Creator</a>, open the <b>Welcome</b> mode and select the example from <b>Examples</b>. For more information, visit <a href="http://qt-project.org/doc/qtcreator/creator-build-example-application.html">Building and Running an Example</a>.</p>
<p>Files:</p>
<ul>
<li><a href="qtquickcontrols-calendar-qml-main-qml.html">calendar/qml/main.qml</a></li>
<li><a href="qtquickcontrols-calendar-src-event-cpp.html">calendar/src/event.cpp</a></li>
<li><a href="qtquickcontrols-calendar-src-event-h.html">calendar/src/event.h</a></li>
<li><a href="qtquickcontrols-calendar-src-sqleventmodel-cpp.html">calendar/src/sqleventmodel.cpp</a></li>
<li><a href="qtquickcontrols-calendar-src-sqleventmodel-h.html">calendar/src/sqleventmodel.h</a></li>
<li><a href="qtquickcontrols-calendar-src-main-cpp.html">calendar/src/main.cpp</a></li>
<li><a href="qtquickcontrols-calendar-calendar-pro.html">calendar/calendar.pro</a></li>
<li><a href="qtquickcontrols-calendar-resources-qrc.html">calendar/resources.qrc</a></li>
</ul>
<p>Images:</p>
<ul>
<li><a href="images/used-in-examples/calendar/images/eventindicator.png">calendar/images/eventindicator.png</a></li>
</ul>
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<!-- @@@calendar -->
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