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<h1 class="title">expandingdelegates.qml Example File</h1>
<span class="subtitle">views/listview/expandingdelegates.qml</span>
<!-- $$$views/listview/expandingdelegates.qml-description -->
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<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.
**
** $QT_BEGIN_LICENSE:BSD$
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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
}
}
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distrib
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Mageia
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7
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i586
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media
>
core-updates
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by-pkgid
>
6e2327ca1c896c6d674ae53117299f21
>
files
>
1834
