diff options
Diffstat (limited to 'examples/declarative/modelviews/listview/expandingdelegates.qml')
| -rw-r--r-- | examples/declarative/modelviews/listview/expandingdelegates.qml | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/examples/declarative/modelviews/listview/expandingdelegates.qml b/examples/declarative/modelviews/listview/expandingdelegates.qml new file mode 100644 index 0000000000..f4b97eac32 --- /dev/null +++ b/examples/declarative/modelviews/listview/expandingdelegates.qml @@ -0,0 +1,200 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module 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 Qt 4.7 +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. the list mode (default), which just shows the picture and title of the recipe. + // 2. the details mode, which also shows the ingredients and method. + Component { + id: recipeDelegate + + Item { + id: wrapper + + // 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: list.width + + // A simple rounded rectangle for the background + Rectangle { + id: background + x: 1; y: 2; width: parent.width - 2; height: parent.height - 4 + color: "#FEFFEE" + border.color: "#FFBE4F" + 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 { + id: pageMouse + anchors.fill: parent + onClicked: wrapper.state = 'Details'; + } + + // Layout the page. Picture, title and ingredients at the top, method at the + // bottom. Note that elements that should not be visible in the list + // mode have their opacity set to wrapper.detailsOpacity. + Row { + id: topLayout + x: 10; y: 10; height: recipePic.height; width: parent.width + spacing: 10 + + Image { + id: recipePic + source: picture; width: 48; height: 48 + } + + Column { + width: background.width-recipePic.width-20; height: recipePic.height; + spacing: 5 + + Text { id: name; text: title; font.bold: true; font.pointSize: 16 } + + Text { + text: "Ingredients" + font.pointSize: 12; font.bold: true + opacity: wrapper.detailsOpacity + } + + Text { + text: ingredients + wrapMode: Text.WordWrap + width: parent.width + opacity: wrapper.detailsOpacity + } + } + } + + Item { + id: details + x: 10; width: parent.width-20 + anchors { top: topLayout.bottom; topMargin: 10; bottom: parent.bottom; bottomMargin: 10 } + opacity: wrapper.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 (''). + MediaButton { + y: 10; anchors { right: background.right; rightMargin: 5 } + opacity: wrapper.detailsOpacity + text: "Close" + + onClicked: wrapper.state = ''; + } + + // Set the default height to the height of the picture, plus margin. + height: 68 + + states: State { + name: "Details" + + PropertyChanges { target: background; color: "white" } + PropertyChanges { target: recipePic; width: 128; height: 128 } // Make picture bigger + PropertyChanges { target: wrapper; detailsOpacity: 1; x: 0 } // Make details visible + PropertyChanges { target: wrapper; height: list.height } // Fill the entire list area with the detailed view + + // Move the list so that this item is at the top. + PropertyChanges { target: wrapper.ListView.view; explicit: true; contentY: wrapper.y } + + // Disallow flicking while we're in detailed view + PropertyChanges { target: wrapper.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: list + anchors.fill: parent + clip: true + model: Recipes + delegate: recipeDelegate + } +} |