<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- qquickpackage.cpp --> <title>Package QML Type | Qt QML 5.9</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 5.9</td><td ><a href="qtqml-index.html">Qt QML</a></td><td ><a href="qtqml-qmlmodule.html">QML Types</a></td><td >Package QML Type</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <li class="level1"><a href="#attached-properties">Attached Properties</a></li> <li class="level1"><a href="#details">Detailed Description</a></li> </ul> </div> <div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">Package QML Type</h1> <span class="subtitle"></span> <!-- $$$Package-brief --> <p>Specifies a collection of named items <a href="#details">More...</a></p> <!-- @@@Package --> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> Import Statement:</td><td class="memItemRight bottomAlign"> import .</td></tr></table></div><ul> <li><a href="qml-package-members.html">List of all members, including inherited members</a></li> </ul> <a name="attached-properties"></a> <h2 id="attached-properties">Attached Properties</h2> <ul> <li class="fn"><b><b><a href="qml-package.html#name-attached-prop">name</a></b></b> : string</li> </ul> <!-- $$$Package-description --> <a name="details"></a> <h2 id="details">Detailed Description</h2> <p>The Package type is used in conjunction with <a href="qml-qtqml-models-delegatemodel.html">DelegateModel</a> to enable delegates with a shared context to be provided to multiple views.</p> <p>Any item within a Package may be assigned a name via the <a href="qml-package.html#name-attached-prop">Package.name</a> attached property.</p> <p>The example below creates a Package containing two named items; <i>list</i> and <i>grid</i>. The third item in the package (the Rectangle) is parented to whichever delegate it should appear in. This allows an item to move between views.</p> <pre class="qml"> <span class="type"><a href="qml-package.html">Package</a></span> { <span class="type">Text</span> { <span class="name">id</span>: <span class="name">listDelegate</span>; <span class="name">width</span>: <span class="name">parent</span>.<span class="name">width</span>; <span class="name">height</span>: <span class="number">25</span>; <span class="name">text</span>: <span class="string">'Empty'</span>; <span class="name">Package</span>.name: <span class="string">'list'</span> } <span class="type">Text</span> { <span class="name">id</span>: <span class="name">gridDelegate</span>; <span class="name">width</span>: <span class="name">parent</span>.<span class="name">width</span> <span class="operator">/</span> <span class="number">2</span>; <span class="name">height</span>: <span class="number">50</span>; <span class="name">text</span>: <span class="string">'Empty'</span>; <span class="name">Package</span>.name: <span class="string">'grid'</span> } <span class="type">Rectangle</span> { <span class="name">id</span>: <span class="name">wrapper</span> <span class="name">width</span>: <span class="name">parent</span>.<span class="name">width</span>; <span class="name">height</span>: <span class="number">25</span> <span class="name">color</span>: <span class="string">'lightsteelblue'</span> <span class="type">Text</span> { <span class="name">text</span>: <span class="name">display</span>; <span class="name">anchors</span>.centerIn: <span class="name">parent</span> } <span class="name">state</span>: <span class="name">root</span>.<span class="name">upTo</span> <span class="operator">></span> <span class="name">index</span> ? <span class="string">'inGrid'</span> : <span class="string">'inList'</span> <span class="name">states</span>: [ <span class="type"><a href="qml-qtqml-statemachine-state.html">State</a></span> { <span class="name">name</span>: <span class="string">'inList'</span> <span class="type">ParentChange</span> { <span class="name">target</span>: <span class="name">wrapper</span>; <span class="name">parent</span>: <span class="name">listDelegate</span> } }, <span class="type"><a href="qml-qtqml-statemachine-state.html">State</a></span> { <span class="name">name</span>: <span class="string">'inGrid'</span> <span class="type">ParentChange</span> { <span class="name">target</span>: <span class="name">wrapper</span>; <span class="name">parent</span>: <span class="name">gridDelegate</span> <span class="name">x</span>: <span class="number">0</span>; <span class="name">y</span>: <span class="number">0</span>; <span class="name">width</span>: <span class="name">gridDelegate</span>.<span class="name">width</span>; <span class="name">height</span>: <span class="name">gridDelegate</span>.<span class="name">height</span> } } ] <span class="name">transitions</span>: [ <span class="type">Transition</span> { <span class="type">ParentAnimation</span> { <span class="type">NumberAnimation</span> { <span class="name">properties</span>: <span class="string">'x,y,width,height'</span>; <span class="name">duration</span>: <span class="number">300</span> } } } ] } } </pre> <p>These named items are used as the delegates by the two views who reference the special <a href="qml-qtqml-models-delegatemodel.html#parts-prop">DelegateModel::parts</a> property to select a model which provides the chosen delegate.</p> <pre class="qml"> <span class="type"><a href="qml-qtqml-models-delegatemodel.html">DelegateModel</a></span> { <span class="name">id</span>: <span class="name">visualModel</span> <span class="name">delegate</span>: <span class="name">Delegate</span> {} <span class="name">model</span>: <span class="name">myModel</span> } <span class="type">ListView</span> { <span class="name">id</span>: <span class="name">lv</span> <span class="name">height</span>: <span class="name">parent</span>.<span class="name">height</span><span class="operator">/</span><span class="number">2</span> <span class="name">width</span>: <span class="name">parent</span>.<span class="name">width</span> <span class="name">model</span>: <span class="name">visualModel</span>.<span class="name">parts</span>.<span class="name">list</span> } <span class="type">GridView</span> { <span class="name">y</span>: <span class="name">parent</span>.<span class="name">height</span><span class="operator">/</span><span class="number">2</span> <span class="name">height</span>: <span class="name">parent</span>.<span class="name">height</span><span class="operator">/</span><span class="number">2</span> <span class="name">width</span>: <span class="name">parent</span>.<span class="name">width</span> <span class="name">cellWidth</span>: <span class="name">width</span> <span class="operator">/</span> <span class="number">2</span> <span class="name">cellHeight</span>: <span class="number">50</span> <span class="name">model</span>: <span class="name">visualModel</span>.<span class="name">parts</span>.<span class="name">grid</span> } </pre> <p><b>See also </b>Qt Quick Examples - Views, Qt Quick Demo - Photo Viewer, and <a href="qtqml-index.html">Qt QML</a>.</p> <!-- @@@Package --> <h2>Attached Property Documentation</h2> <!-- $$$name --> <div class="qmlitem"><div class="qmlproto"> <div class="table"><table class="qmlname"> <tr valign="top" class="odd" id="name-attached-prop"> <td class="tblQmlPropNode"><p> <a name="name-attached-prop"></a><span class="name">Package.name</span> : <span class="type">string</span></p></td></tr> </table></div> </div><div class="qmldoc"><p>This attached property holds the name of an item within a Package.</p> </div></div><!-- @@@name --> <br/> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2017 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>