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+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt for Python 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,
+** 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
+import QtQuick.Controls
+import QtQuick.Window
+import BaseModel
+
+Window {
+ title: "Moving Rectangle"
+ width: 800
+ height: 480
+ visible: true
+ id: mainWindow
+
+ Column {
+ spacing: 20
+ anchors.fill: parent
+ id: mainColumn
+ Text {
+ padding: 20
+ font.pointSize: 10
+ width: 600
+ wrapMode: Text.Wrap
+ text: "This example shows how to add, remove and move items inside a QML ListView.\n
+It shows and edits data via roles using QAbstractListModel on the Python side.\n
+Use the 'Middle click' on top of a rectangle to remove an item.\n
+'Left click' and drag to move the items."
+ }
+
+ Button {
+ anchors {
+ left: mainColumn.left
+ right: mainColumn.right
+ margins: 30
+ }
+ text: "Reset view"
+ onClicked: lv.model.reset()
+ }
+
+ Button {
+ anchors {
+ left: mainColumn.left
+ right: mainColumn.right
+ margins: 30
+ }
+ text: "Add element"
+ onClicked: lv.model.append()
+ }
+
+ ListView {
+ id: lv
+ anchors {
+ left: mainColumn.left
+ right: mainColumn.right
+ margins: 30
+ }
+
+ height: 200
+ model: BaseModel {}
+ orientation: ListView.Horizontal
+ displaced: Transition {
+ NumberAnimation {
+ properties: "x,y"
+ easing.type: Easing.OutQuad
+ }
+ }
+ delegate: DropArea {
+ id: droparea
+ width: ratio * lv.width
+ height: lv.height
+
+ onEntered: function (drag) {
+ let dragindex = drag.source.modelIndex
+ if (index === dragindex)
+ return
+ lv.model.move(dragindex, index)
+ }
+
+ MovingRectangle {
+ modelIndex: index
+ dragParent: lv
+ sizeParent: droparea
+ }
+ }
+
+ MouseArea {
+ id: lvMousearea
+ anchors.fill: lv
+ z: -1
+ }
+ Rectangle {
+ id: lvBackground
+ anchors.fill: lv
+ anchors.margins: -border.width
+ color: "white"
+ border.color: "black"
+ border.width: 5
+ z: -1
+ }
+ Component.onCompleted: {
+ lv.model.reset()
+ }
+ }
+ }
+}