Sophie: qtdeclarative5-doc-5.12.6-1.mga7 noarch

qtdeclarative5-doc-5.12.6-1.mga7.noarch.rpm

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html lang="en">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- dynamicview-tutorial.qdoc -->
  <title>QML Dynamic View Ordering Tutorial 1 - A Simple ListView and Delegate | Qt Quick 5.12.6</title>
  <link rel="stylesheet" type="text/css" href="style/offline-simple.css" />
  <script type="text/javascript">
    document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css");
    // loading style sheet breaks anchors that were jumped to before
    // so force jumping to anchor again
    setTimeout(function() {
        var anchor = location.hash;
        // need to jump to different anchor first (e.g. none)
        location.hash = "#";
        setTimeout(function() {
            location.hash = anchor;
        }, 0);
    }, 0);
  </script>
</head>
<body>
<div class="header" id="qtdocheader">
  <div class="main">
    <div class="main-rounded">
      <div class="navigationbar">
        <table><tr>
<td >Qt 5.12</td><td ><a href="qtquick-index.html">Qt Quick</a></td><td >QML Dynamic View Ordering Tutorial 1 - A Simple ListView and Delegate</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qtquick-index.html">Qt 5.12.6 Reference Documentation</a></td>
        </tr></table>
      </div>
    </div>
<div class="content">
<div class="line">
<div class="content mainContent">
  <link rel="prev" href="qml-dynamicview-tutorial.html" />
  <link rel="next" href="qtquick-tutorials-dynamicview-dynamicview2-example.html" />
<p class="naviNextPrevious headerNavi">
<a class="prevPage" href="qml-dynamicview-tutorial.html">QML Dynamic View Ordering Tutorial</a>
<span class="naviSeparator">  &#9702;  </span>
<a class="nextPage" href="qtquick-tutorials-dynamicview-dynamicview2-example.html">QML Dynamic View Ordering Tutorial 2 - Dragging View Items</a>
</p><p/>
<div class="sidebar">
<div class="toc">
<h3><a name="toc">Contents</a></h3>
<ul>
<li class="level2"><a href="#walkthrough">Walkthrough</a></li>
</ul>
</div>
<div class="sidebar-content" id="sidebar-content"></div></div>
<h1 class="title">QML Dynamic View Ordering Tutorial 1 - A Simple ListView and Delegate</h1>
<span class="subtitle"></span>
<!-- $$$tutorials/dynamicview/dynamicview1-description -->
<div class="descr"> <a name="details"></a>
<p>We begin our application by defining a <a href="qml-qtquick-listview.html">ListView</a>, a model which will provide data to the view, and a delegate which provides a template for constructing items in the view.</p>
<p>The code for the <a href="qml-qtquick-listview.html">ListView</a> and delegate looks like this:</p>
<pre class="qml">

  import QtQuick 2.0

  Rectangle {
      id: root

      width: 300; height: 400

      Component {
          id: dragDelegate

          Rectangle {
              id: content

              anchors { left: parent.left; right: parent.right }
              height: column.implicitHeight + 4

              border.width: 1
              border.color: "lightsteelblue"

              radius: 2

              Column {
                  id: column
                  anchors { fill: parent; margins: 2 }

                  Text { text: 'Name: ' + name }
                  Text { text: 'Type: ' + type }
                  Text { text: 'Age: ' + age }
                  Text { text: 'Size: ' + size }
              }
          }
      }
      ListView {
          id: view

          anchors { fill: parent; margins: 2 }

          model: PetsModel {}
          delegate: dragDelegate

          spacing: 4
          cacheBuffer: 50
      }
  }

</pre>
<p>The model is defined in a separate QML file which looks like this:</p>
<pre class="qml">

  import QtQuick 2.0

  ListModel {
      ListElement {
          name: "Polly"
          type: "Parrot"
          age: 12
          size: "Small"
      }
      ListElement {
          name: "Penny"
          type: "Turtle"
          age: 4
          size: "Small"
      }
  }

</pre>
<a name="walkthrough"></a>
<h3 id="walkthrough">Walkthrough</h3>
<p>The first item defined within the application's root Rectangle is the delegate Component. This is the template from which each item in the <a href="qml-qtquick-listview.html">ListView</a> is constructed.</p>
<p>The <code>name</code>, <code>age</code>, <code>type</code>, and <code>size</code> variables referenced in the delegate are sourced from the model data. The names correspond to roles defined in the model.</p>
<pre class="qml">

      Component {
          id: dragDelegate

          Rectangle {
              id: content

              anchors { left: parent.left; right: parent.right }
              height: column.implicitHeight + 4

              border.width: 1
              border.color: "lightsteelblue"

              radius: 2

              Column {
                  id: column
                  anchors { fill: parent; margins: 2 }

                  Text { text: 'Name: ' + name }
                  Text { text: 'Type: ' + type }
                  Text { text: 'Age: ' + age }
                  Text { text: 'Size: ' + size }
              }
          }
      }

</pre>
<p>The second part of the application is the <a href="qml-qtquick-listview.html">ListView</a> itself to which we bind the model and delegate.</p>
<pre class="qml">

      ListView {
          id: view

          anchors { fill: parent; margins: 2 }

          model: PetsModel {}
          delegate: dragDelegate

          spacing: 4
          cacheBuffer: 50
      }

</pre>
<p>Files:</p>
<ul>
<li><a href="qtquick-tutorials-dynamicview-dynamicview1-petsmodel-qml.html">tutorials/dynamicview/dynamicview1/PetsModel.qml</a></li>
<li><a href="qtquick-tutorials-dynamicview-dynamicview1-dynamicview-qml.html">tutorials/dynamicview/dynamicview1/dynamicview.qml</a></li>
<li><a href="qtquick-tutorials-dynamicview-dynamicview1-dynamicview1-qmlproject.html">tutorials/dynamicview/dynamicview1/dynamicview1.qmlproject</a></li>
</ul>
</div>
<!-- @@@tutorials/dynamicview/dynamicview1 -->
<p class="naviNextPrevious footerNavi">
<a class="prevPage" href="qml-dynamicview-tutorial.html">QML Dynamic View Ordering Tutorial</a>
<span class="naviSeparator">  &#9702;  </span>
<a class="nextPage" href="qtquick-tutorials-dynamicview-dynamicview2-example.html">QML Dynamic View Ordering Tutorial 2 - Dragging View Items</a>
</p>
        </div>
       </div>
   </div>
   </div>
</div>
<div class="footer">
   <p>
   <acronym title="Copyright">&copy;</acronym> 2019 The Qt Company Ltd.
   Documentation contributions included herein are the copyrights of
   their respective owners.<br/>    The documentation provided herein is licensed under the terms of the    <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation    License version 1.3</a> as published by the Free Software Foundation.<br/>    Qt and respective logos are trademarks of The Qt Company Ltd.     in Finland and/or other countries worldwide. All other trademarks are property
   of their respective owners. </p>
</div>
</body>
</html>