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+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQuick module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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.Shapes
+
+Rectangle {
+ color: "lightGray"
+
+ Shape {
+ id: circ1
+ anchors.fill: parent
+
+ ShapePath {
+ id: p1
+ fillColor: "transparent" // stroke only
+ strokeWidth: 4
+
+ SequentialAnimation on strokeColor {
+ loops: Animation.Infinite
+ ColorAnimation {
+ from: "black"
+ to: "yellow"
+ duration: 5000
+ }
+ ColorAnimation {
+ from: "yellow"
+ to: "green"
+ duration: 5000
+ }
+ ColorAnimation {
+ from: "green"
+ to: "black"
+ duration: 5000
+ }
+ }
+
+ property real r: 60
+ startX: circ1.width / 2 - r
+ startY: circ1.height / 2 - r
+ PathArc {
+ x: circ1.width / 2 + p1.r
+ y: circ1.height / 2 + p1.r
+ radiusX: p1.r; radiusY: p1.r
+ useLargeArc: true
+ }
+ PathArc {
+ x: circ1.width / 2 - p1.r
+ y: circ1.height / 2 - p1.r
+ radiusX: p1.r; radiusY: p1.r
+ useLargeArc: true
+ }
+ }
+ }
+
+ Shape {
+ id: circ2
+ anchors.fill: parent
+
+ SequentialAnimation on opacity {
+ loops: Animation.Infinite
+ NumberAnimation { from: 1.0; to: 0.0; duration: 5000 }
+ NumberAnimation { from: 0.0; to: 1.0; duration: 5000 }
+ }
+
+ ShapePath {
+ id: p2
+ strokeWidth: -1 // or strokeColor: "transparent"
+
+ SequentialAnimation on fillColor {
+ loops: Animation.Infinite
+ ColorAnimation {
+ from: "gray"
+ to: "purple"
+ duration: 3000
+ }
+ ColorAnimation {
+ from: "purple"
+ to: "red"
+ duration: 3000
+ }
+ ColorAnimation {
+ from: "red"
+ to: "gray"
+ duration: 3000
+ }
+ }
+
+ property real r: 40
+ startX: circ2.width / 2 - r
+ startY: circ2.height / 2 - r
+ PathArc {
+ x: circ2.width / 2 + p2.r
+ y: circ2.height / 2 + p2.r
+ radiusX: p2.r; radiusY: p2.r
+ useLargeArc: true
+ }
+ PathArc {
+ x: circ2.width / 2 - p2.r
+ y: circ2.height / 2 - p2.r
+ radiusX: p2.r; radiusY: p2.r
+ useLargeArc: true
+ }
+ }
+ }
+}