<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>expandingdelegates.qml Example File | Qt Quick 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="qtquick-index.html">Qt Quick</a></td><td ><a href="qtquick-views-example.html">Qt Quick Examples - Views</a></td><td >expandingdelegates.qml Example File</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="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">expandingdelegates.qml Example File</h1> <span class="subtitle">views/listview/expandingdelegates.qml</span> <!-- $$$views/listview/expandingdelegates.qml-description --> <div class="descr"> <a name="details"></a> <pre class="qml"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2017 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, 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." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> import QtQuick 2.0 import "content" <span class="comment">// This example illustrates expanding a list item to show a more detailed view.</span> <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> { <span class="name">id</span>: <span class="name">page</span> <span class="name">width</span>: <span class="number">400</span>; <span class="name">height</span>: <span class="number">240</span> <span class="name">color</span>: <span class="string">"black"</span> <span class="comment">// Delegate for the recipes. This delegate has two modes:</span> <span class="comment">// 1. List mode (default), which just shows the picture and title of the recipe.</span> <span class="comment">// 2. Details mode, which also shows the ingredients and method.</span> <span class="type">Component</span> { <span class="name">id</span>: <span class="name">recipeDelegate</span> <span class="type"><a href="qml-qtquick-item.html">Item</a></span> { <span class="name">id</span>: <span class="name">recipe</span> <span class="comment">// Create a property to contain the visibility of the details.</span> <span class="comment">// We can bind multiple element's opacity to this one property,</span> <span class="comment">// rather than having a "PropertyChanges" line for each element we</span> <span class="comment">// want to fade.</span> property <span class="type">real</span> <span class="name">detailsOpacity</span> : <span class="number">0</span> <span class="name">width</span>: <span class="name">listView</span>.<span class="name">width</span> <span class="name">height</span>: <span class="number">70</span> <span class="comment">// A simple rounded rectangle for the background</span> <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> { <span class="name">id</span>: <span class="name">background</span> <span class="name">x</span>: <span class="number">2</span>; <span class="name">y</span>: <span class="number">2</span>; <span class="name">width</span>: <span class="name">parent</span>.<span class="name">width</span> <span class="operator">-</span> <span class="name">x</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="name">y</span><span class="operator">*</span><span class="number">2</span> <span class="name">color</span>: <span class="string">"ivory"</span> <span class="name">border</span>.color: <span class="string">"orange"</span> <span class="name">radius</span>: <span class="number">5</span> } <span class="comment">// This mouse region covers the entire delegate.</span> <span class="comment">// When clicked it changes mode to 'Details'. If we are already</span> <span class="comment">// in Details mode, then no change will happen.</span> <span class="type"><a href="qml-qtquick-mousearea.html">MouseArea</a></span> { <span class="name">anchors</span>.fill: <span class="name">parent</span> <span class="name">onClicked</span>: <span class="name">recipe</span>.<span class="name">state</span> <span class="operator">=</span> <span class="string">'Details'</span>; } <span class="comment">// Lay out the page: picture, title and ingredients at the top, and method at the</span> <span class="comment">// bottom. Note that elements that should not be visible in the list</span> <span class="comment">// mode have their opacity set to recipe.detailsOpacity.</span> <span class="type"><a href="qml-qtquick-row.html">Row</a></span> { <span class="name">id</span>: <span class="name">topLayout</span> <span class="name">x</span>: <span class="number">10</span>; <span class="name">y</span>: <span class="number">10</span>; <span class="name">height</span>: <span class="name">recipeImage</span>.<span class="name">height</span>; <span class="name">width</span>: <span class="name">parent</span>.<span class="name">width</span> <span class="name">spacing</span>: <span class="number">10</span> <span class="type"><a href="qml-qtquick-image.html">Image</a></span> { <span class="name">id</span>: <span class="name">recipeImage</span> <span class="name">width</span>: <span class="number">50</span>; <span class="name">height</span>: <span class="number">50</span> <span class="name">source</span>: <span class="name">picture</span> } <span class="type"><a href="qml-qtquick-column.html">Column</a></span> { <span class="name">width</span>: <span class="name">background</span>.<span class="name">width</span> <span class="operator">-</span> <span class="name">recipeImage</span>.<span class="name">width</span> <span class="operator">-</span> <span class="number">20</span>; <span class="name">height</span>: <span class="name">recipeImage</span>.<span class="name">height</span> <span class="name">spacing</span>: <span class="number">5</span> <span class="type"><a href="qml-qtquick-text.html">Text</a></span> { <span class="name">text</span>: <span class="name">title</span> <span class="name">font</span>.bold: <span class="number">true</span>; <span class="name">font</span>.pointSize: <span class="number">16</span> } <span class="type">SmallText</span> { <span class="name">text</span>: <span class="string">"Ingredients"</span> <span class="name">font</span>.bold: <span class="number">true</span> <span class="name">opacity</span>: <span class="name">recipe</span>.<span class="name">detailsOpacity</span> } <span class="type">SmallText</span> { <span class="name">text</span>: <span class="name">ingredients</span> <span class="name">wrapMode</span>: <span class="name">Text</span>.<span class="name">WordWrap</span> <span class="name">width</span>: <span class="name">parent</span>.<span class="name">width</span> <span class="name">opacity</span>: <span class="name">recipe</span>.<span class="name">detailsOpacity</span> } } } <span class="type"><a href="qml-qtquick-item.html">Item</a></span> { <span class="name">id</span>: <span class="name">details</span> <span class="name">x</span>: <span class="number">10</span>; <span class="name">width</span>: <span class="name">parent</span>.<span class="name">width</span> <span class="operator">-</span> <span class="number">20</span> <span class="type">anchors</span> { <span class="name">top</span>: <span class="name">topLayout</span>.<span class="name">bottom</span>; <span class="name">topMargin</span>: <span class="number">10</span>; <span class="name">bottom</span>: <span class="name">parent</span>.<span class="name">bottom</span>; <span class="name">bottomMargin</span>: <span class="number">10</span> } <span class="name">opacity</span>: <span class="name">recipe</span>.<span class="name">detailsOpacity</span> <span class="type">SmallText</span> { <span class="name">id</span>: <span class="name">methodTitle</span> <span class="name">anchors</span>.top: <span class="name">parent</span>.<span class="name">top</span> <span class="name">text</span>: <span class="string">"Method"</span> <span class="name">font</span>.pointSize: <span class="number">12</span>; <span class="name">font</span>.bold: <span class="number">true</span> } <span class="type"><a href="qml-qtquick-flickable.html">Flickable</a></span> { <span class="name">id</span>: <span class="name">flick</span> <span class="name">width</span>: <span class="name">parent</span>.<span class="name">width</span> <span class="type">anchors</span> { <span class="name">top</span>: <span class="name">methodTitle</span>.<span class="name">bottom</span>; <span class="name">bottom</span>: <span class="name">parent</span>.<span class="name">bottom</span> } <span class="name">contentHeight</span>: <span class="name">methodText</span>.<span class="name">height</span> <span class="name">clip</span>: <span class="number">true</span> <span class="type"><a href="qml-qtquick-text.html">Text</a></span> { <span class="name">id</span>: <span class="name">methodText</span>; <span class="name">text</span>: <span class="name">method</span>; <span class="name">wrapMode</span>: <span class="name">Text</span>.<span class="name">WordWrap</span>; <span class="name">width</span>: <span class="name">details</span>.<span class="name">width</span> } } <span class="type"><a href="qml-qtquick-image.html">Image</a></span> { <span class="type">anchors</span> { <span class="name">right</span>: <span class="name">flick</span>.<span class="name">right</span>; <span class="name">top</span>: <span class="name">flick</span>.<span class="name">top</span> } <span class="name">source</span>: <span class="string">"content/pics/moreUp.png"</span> <span class="name">opacity</span>: <span class="name">flick</span>.<span class="name">atYBeginning</span> ? <span class="number">0</span> : <span class="number">1</span> } <span class="type"><a href="qml-qtquick-image.html">Image</a></span> { <span class="type">anchors</span> { <span class="name">right</span>: <span class="name">flick</span>.<span class="name">right</span>; <span class="name">bottom</span>: <span class="name">flick</span>.<span class="name">bottom</span> } <span class="name">source</span>: <span class="string">"content/pics/moreDown.png"</span> <span class="name">opacity</span>: <span class="name">flick</span>.<span class="name">atYEnd</span> ? <span class="number">0</span> : <span class="number">1</span> } } <span class="comment">// A button to close the detailed view, i.e. set the state back to default ('').</span> <span class="type">TextButton</span> { <span class="name">y</span>: <span class="number">10</span> <span class="type">anchors</span> { <span class="name">right</span>: <span class="name">background</span>.<span class="name">right</span>; <span class="name">rightMargin</span>: <span class="number">10</span> } <span class="name">opacity</span>: <span class="name">recipe</span>.<span class="name">detailsOpacity</span> <span class="name">text</span>: <span class="string">"Close"</span> <span class="name">onClicked</span>: <span class="name">recipe</span>.<span class="name">state</span> <span class="operator">=</span> <span class="string">''</span>; } <span class="name">states</span>: <span class="name">State</span> { <span class="name">name</span>: <span class="string">"Details"</span> <span class="type"><a href="qml-qtquick-propertychanges.html">PropertyChanges</a></span> { <span class="name">target</span>: <span class="name">background</span>; <span class="name">color</span>: <span class="string">"white"</span> } <span class="type"><a href="qml-qtquick-propertychanges.html">PropertyChanges</a></span> { <span class="name">target</span>: <span class="name">recipeImage</span>; <span class="name">width</span>: <span class="number">130</span>; <span class="name">height</span>: <span class="number">130</span> } <span class="comment">// Make picture bigger</span> <span class="type"><a href="qml-qtquick-propertychanges.html">PropertyChanges</a></span> { <span class="name">target</span>: <span class="name">recipe</span>; <span class="name">detailsOpacity</span>: <span class="number">1</span>; <span class="name">x</span>: <span class="number">0</span> } <span class="comment">// Make details visible</span> <span class="type"><a href="qml-qtquick-propertychanges.html">PropertyChanges</a></span> { <span class="name">target</span>: <span class="name">recipe</span>; <span class="name">height</span>: <span class="name">listView</span>.<span class="name">height</span> } <span class="comment">// Fill the entire list area with the detailed view</span> <span class="comment">// Move the list so that this item is at the top.</span> <span class="type"><a href="qml-qtquick-propertychanges.html">PropertyChanges</a></span> { <span class="name">target</span>: <span class="name">recipe</span>.<span class="name">ListView</span>.<span class="name">view</span>; <span class="name">explicit</span>: <span class="number">true</span>; <span class="name">contentY</span>: <span class="name">recipe</span>.<span class="name">y</span> } <span class="comment">// Disallow flicking while we're in detailed view</span> <span class="type"><a href="qml-qtquick-propertychanges.html">PropertyChanges</a></span> { <span class="name">target</span>: <span class="name">recipe</span>.<span class="name">ListView</span>.<span class="name">view</span>; <span class="name">interactive</span>: <span class="number">false</span> } } <span class="name">transitions</span>: <span class="name">Transition</span> { <span class="comment">// Make the state changes smooth</span> <span class="type"><a href="qml-qtquick-parallelanimation.html">ParallelAnimation</a></span> { <span class="type"><a href="qml-qtquick-coloranimation.html">ColorAnimation</a></span> { <span class="name">property</span>: <span class="string">"color"</span>; <span class="name">duration</span>: <span class="number">500</span> } <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">duration</span>: <span class="number">300</span>; <span class="name">properties</span>: <span class="string">"detailsOpacity,x,contentY,height,width"</span> } } } } } <span class="comment">// The actual list</span> <span class="type"><a href="qml-qtquick-listview.html">ListView</a></span> { <span class="name">id</span>: <span class="name">listView</span> <span class="name">anchors</span>.fill: <span class="name">parent</span> <span class="name">model</span>: <span class="name">RecipesModel</span> {} <span class="name">delegate</span>: <span class="name">recipeDelegate</span> } } </pre> </div> <!-- @@@views/listview/expandingdelegates.qml --> </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>