<?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 5.12.6</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 ><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"><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"> <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"> /**************************************************************************** ** ** 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." ** ** $QT_END_LICENSE$ ** ****************************************************************************/ import QtQuick 2.0 import "content" // This example illustrates expanding a list item to show a more detailed view. Rectangle { id: page width: 400; height: 240 color: "black" // Delegate for the recipes. This delegate has two modes: // 1. List mode (default), which just shows the picture and title of the recipe. // 2. Details mode, which also shows the ingredients and method. Component { id: recipeDelegate Item { id: recipe // Create a property to contain the visibility of the details. // We can bind multiple element's opacity to this one property, // rather than having a "PropertyChanges" line for each element we // want to fade. property real detailsOpacity : 0 width: listView.width height: 70 // A simple rounded rectangle for the background Rectangle { id: background x: 2; y: 2; width: parent.width - x*2; height: parent.height - y*2 color: "ivory" border.color: "orange" radius: 5 } // This mouse region covers the entire delegate. // When clicked it changes mode to 'Details'. If we are already // in Details mode, then no change will happen. MouseArea { anchors.fill: parent onClicked: recipe.state = 'Details'; } // Lay out the page: picture, title and ingredients at the top, and method at the // bottom. Note that elements that should not be visible in the list // mode have their opacity set to recipe.detailsOpacity. Row { id: topLayout x: 10; y: 10; height: recipeImage.height; width: parent.width spacing: 10 Image { id: recipeImage width: 50; height: 50 source: picture } Column { width: background.width - recipeImage.width - 20; height: recipeImage.height spacing: 5 Text { text: title font.bold: true; font.pointSize: 16 } SmallText { text: "Ingredients" font.bold: true opacity: recipe.detailsOpacity } SmallText { text: ingredients wrapMode: Text.WordWrap width: parent.width opacity: recipe.detailsOpacity } } } Item { id: details x: 10; width: parent.width - 20 anchors { top: topLayout.bottom; topMargin: 10; bottom: parent.bottom; bottomMargin: 10 } opacity: recipe.detailsOpacity SmallText { id: methodTitle anchors.top: parent.top text: "Method" font.pointSize: 12; font.bold: true } Flickable { id: flick width: parent.width anchors { top: methodTitle.bottom; bottom: parent.bottom } contentHeight: methodText.height clip: true Text { id: methodText; text: method; wrapMode: Text.WordWrap; width: details.width } } Image { anchors { right: flick.right; top: flick.top } source: "content/pics/moreUp.png" opacity: flick.atYBeginning ? 0 : 1 } Image { anchors { right: flick.right; bottom: flick.bottom } source: "content/pics/moreDown.png" opacity: flick.atYEnd ? 0 : 1 } } // A button to close the detailed view, i.e. set the state back to default (''). TextButton { y: 10 anchors { right: background.right; rightMargin: 10 } opacity: recipe.detailsOpacity text: "Close" onClicked: recipe.state = ''; } states: State { name: "Details" PropertyChanges { target: background; color: "white" } PropertyChanges { target: recipeImage; width: 130; height: 130 } // Make picture bigger PropertyChanges { target: recipe; detailsOpacity: 1; x: 0 } // Make details visible PropertyChanges { target: recipe; height: listView.height } // Fill the entire list area with the detailed view // Move the list so that this item is at the top. PropertyChanges { target: recipe.ListView.view; explicit: true; contentY: recipe.y } // Disallow flicking while we're in detailed view PropertyChanges { target: recipe.ListView.view; interactive: false } } transitions: Transition { // Make the state changes smooth ParallelAnimation { ColorAnimation { property: "color"; duration: 500 } NumberAnimation { duration: 300; properties: "detailsOpacity,x,contentY,height,width" } } } } } // The actual list ListView { id: listView anchors.fill: parent model: RecipesModel {} delegate: recipeDelegate } } </pre> </div> <!-- @@@views/listview/expandingdelegates.qml --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. 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