expandingdelegates.qml Example File

views/listview/expandingdelegates.qml
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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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