main.qml Example File
audio-visualizer-qml/main.qml/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: http://www.qt.io/licensing/ ** ** This file is part of the Qt3D module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL3$ ** 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 http://www.qt.io/terms-conditions. For further ** information use the contact form at http://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 3 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPLv3 included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 3 requirements ** will be met: https://www.gnu.org/licenses/lgpl.html. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 2.0 or later as published by the Free ** Software Foundation and appearing in the file LICENSE.GPL included in ** the packaging of this file. Please review the following information to ** ensure the GNU General Public License version 2.0 requirements will be ** met: http://www.gnu.org/licenses/gpl-2.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ import QtQuick 2.0 import QtQuick.Scene3D 2.0 import QtQuick.Layouts 1.2 import QtMultimedia 5.0 Item { id: mainview width: 1215 height: 720 visible: true property bool isHoverEnabled: false property variant magnitudeArray: null property int millisecondsPerBar: 68 property string magnitudeDataSourceFile: "qrc:/music/visualization.raw" property int mediaLatencyOffset: 68 state: "stopped" states: [ State { name: "playing" PropertyChanges { target: playButtonImage source: { if (playButtonMouseArea.containsMouse) "qrc:/images/pausehoverpressed.png" else "qrc:/images/pausenormal.png" } } PropertyChanges { target: stopButtonImage source: "qrc:/images/stopnormal.png" } }, State { name: "paused" PropertyChanges { target: playButtonImage source: { if (playButtonMouseArea.containsMouse) "qrc:/images/playhoverpressed.png" else "qrc:/images/playnormal.png" } } PropertyChanges { target: stopButtonImage source: "qrc:/images/stopnormal.png" } }, State { name: "stopped" PropertyChanges { target: playButtonImage source: "qrc:/images/playnormal.png" } PropertyChanges { target: stopButtonImage source: "qrc:/images/stopdisabled.png" } } ] Component.onCompleted: isHoverEnabled = touchSettings.isHoverEnabled() MediaPlayer { id: mediaPlayer autoPlay: true volume: 0.5 source: "qrc:/music/tiltshifted_lost_neon_sun.mp3" onStatusChanged: { if (status == MediaPlayer.EndOfMedia) //{ state = "stopped" } onError: console.error("error with audio " + mediaPlayer.error) onDurationChanged: { // Load the pre-calculated magnitude data for the visualizer var request = new XMLHttpRequest() request.responseType = 'arraybuffer' request.onreadystatechange = function() { if (request.readyState === XMLHttpRequest.DONE) { if (request.status == 200 || request.status == 0) { var arrayBuffer = request.response if (arrayBuffer) { magnitudeArray = new Uint16Array(arrayBuffer) visualizer.startVisualization() } } else { console.warn("Couldn't load magnitude data for bars.") } request = null } }; request.open('GET', magnitudeDataSourceFile, true) request.send(null) } function getNextAudioLevel(offsetMs) { if (magnitudeArray === null) return 0.0; // Calculate the integer index position in to the magnitude array var index = ((mediaPlayer.position + offsetMs) / mainview.millisecondsPerBar) | 0; if (index < 0 || index >= magnitudeArray.length) return 0.0; return (magnitudeArray[index] / 63274.0); } } Image { id: coverImage anchors.fill: parent source: "qrc:/images/albumcover.png" } Scene3D { anchors.fill: parent Visualizer { id: visualizer animationState: mainview.state numberOfBars: 120 barRotationTimeMs: 8160 // 68 ms per bar } } Rectangle { id: blackBottomRect color: "black" width: parent.width height: 0.14 * mainview.height anchors.bottom: parent.bottom } // Duration of played content Text { text: formatDuration(mediaPlayer.position) color: "#80C342" x: parent.width / 6 y: mainview.height - mainview.height / 8 font.pixelSize: 12 } // Duration of the content left Text { text: "-" + formatDuration(mediaPlayer.duration - mediaPlayer.position) color: "#80C342" x: parent.width - parent.width / 6 y: mainview.height - mainview.height / 8 font.pixelSize: 12 } function formatDuration(milliseconds) { var minutes = Math.floor(milliseconds / 60000) milliseconds -= minutes * 60000 var seconds = milliseconds / 1000 seconds = Math.round(seconds) if (seconds < 10) return minutes + ":0" + seconds else return minutes + ":" + seconds } property int buttonHorizontalMargin: 10 Rectangle { id: playButton height: 54 width: 54 anchors.bottom: parent.bottom anchors.bottomMargin: width x: parent.width / 2 - width - buttonHorizontalMargin color: "transparent" Image { id: playButtonImage source: "qrc:/images/pausenormal.png" } MouseArea { id: playButtonMouseArea anchors.fill: parent hoverEnabled: isHoverEnabled onClicked: { if (mainview.state == 'paused' || mainview.state == 'stopped') mainview.state = 'playing' else mainview.state = 'paused' } onEntered: { if (mainview.state == 'playing') playButtonImage.source = "qrc:/images/pausehoverpressed.png" else playButtonImage.source = "qrc:/images/playhoverpressed.png" } onExited: { if (mainview.state == 'playing') playButtonImage.source = "qrc:/images/pausenormal.png" else playButtonImage.source = "qrc:/images/playnormal.png" } } } Rectangle { id: stopButton height: 54 width: 54 anchors.bottom: parent.bottom anchors.bottomMargin: width x: parent.width / 2 + buttonHorizontalMargin color: "transparent" Image { id: stopButtonImage source: "qrc:/images/stopnormal.png" } MouseArea { anchors.fill: parent hoverEnabled: isHoverEnabled onClicked: mainview.state = 'stopped' onEntered: { if (mainview.state != 'stopped') stopButtonImage.source = "qrc:/images/stophoverpressed.png" } onExited: { if (mainview.state != 'stopped') stopButtonImage.source = "qrc:/images/stopnormal.png" } } } }
© 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.