- Qt 5.5
- Qt Quick
- Qt Quick Examples - Views
- slideshow.qml Example File
- Qt 5.5.1 Reference Documentation

# slideshow.qml Example File

views/visualdatamodel/slideshow.qml

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** 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 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,
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    ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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    ****************************************************************************/

    import QtQuick 2.0
    import QtQuick.XmlListModel 2.0
    import QtQml.Models 2.1

    Rectangle {
        id: root

        property Item displayItem: null

        width: 300; height: 400

        color: "black"

        DelegateModel {
            id: visualModel

            model: XmlListModel {
                source: "http://api.flickr.com/services/feeds/photos_public.gne?format=rss2"
                query: "/rss/channel/item"
                namespaceDeclarations: "declare namespace media=\"http://search.yahoo.com/mrss/\";"

                XmlRole { name: "imagePath"; query: "media:thumbnail/@url/string()" }
                XmlRole { name: "url"; query: "media:content/@url/string()" }
            }

            delegate: Item {
                id: delegateItem

                width: 76; height: 76

                Rectangle {
                    id: image
                    x: 0; y: 0; width: 76; height: 76
                    border.width: 1
                    border.color: "white"
                    color: "black"

                    Image {
                        anchors.fill: parent
                        anchors.leftMargin: 1
                        anchors.topMargin: 1

                        source: imagePath
                        fillMode: Image.PreserveAspectFit

                    }

                    MouseArea {
                        id: clickArea
                        anchors.fill: parent

                        onClicked: root.displayItem = root.displayItem !== delegateItem ? delegateItem : null
                    }

                    states: [
                        State {
                            when: root.displayItem === delegateItem
                            name: "inDisplay";
                            ParentChange { target: image; parent: imageContainer; x: 75; y: 75; width: 150; height: 150 }
                            PropertyChanges { target: image; z: 2 }
                            PropertyChanges { target: delegateItem; DelegateModel.inItems: false }
                        },
                        State {
                            when: root.displayItem !== delegateItem
                            name: "inList";
                            ParentChange { target: image; parent: delegateItem; x: 2; y: 2; width: 75; height: 75 }
                            PropertyChanges { target: image; z: 1 }
                            PropertyChanges { target: delegateItem; DelegateModel.inItems: true }
                        }
                    ]

                    transitions: [
                        Transition {
                            from: "inList"
                            SequentialAnimation {
                                PropertyAction { target: delegateItem; property: "DelegateModel.inPersistedItems"; value: true }
                                ParentAnimation {
                                    target: image;
                                    via: root
                                    NumberAnimation { target: image; properties: "x,y,width,height"; duration: 1000 }
                                }
                            }
                        }, Transition {
                            from: "inDisplay"
                            SequentialAnimation {
                                ParentAnimation {
                                    target: image
                                    NumberAnimation { target: image; properties: "x,y,width,height"; duration: 1000 }
                                }
                                PropertyAction { target: delegateItem; property: "DelegateModel.inPersistedItems"; value: false }
                            }
                        }
                    ]
                }
            }
        }

        PathView {
            id: imagePath

            anchors { left: parent.left; top: imageContainer.bottom; right: parent.right; bottom: parent.bottom }
            model: visualModel

            pathItemCount: 7
            path: Path {
                startX: -50; startY: 0
                PathQuad { x: 150; y: 50; controlX: 0; controlY: 50 }
                PathQuad { x: 350; y: 0; controlX: 300; controlY: 50 }
            }
        }

        Item {
            id: imageContainer
            anchors { fill: parent; bottomMargin: 100 }
        }
    }