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Diffstat (limited to 'examples/qml/modelviews/listview/expandingdelegates.qml')
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diff --git a/examples/qml/modelviews/listview/expandingdelegates.qml b/examples/qml/modelviews/listview/expandingdelegates.qml new file mode 100644 index 0000000000..43a9662422 --- /dev/null +++ b/examples/qml/modelviews/listview/expandingdelegates.qml @@ -0,0 +1,202 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 Nokia Corporation and its Subsidiary(-ies) 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 + } + + Text { + text: "Ingredients" + font.pointSize: 12; font.bold: true + opacity: recipe.detailsOpacity + } + + Text { + 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 + + Text { + 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 + } +} |