main.qml Example File

multimedia/video/qmlvideo/qml/qmlvideo/main.qml
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 2.0

Rectangle {
    id: root
    anchors.fill: parent
    color: "black"

    property string source1
    property string source2
    property color bgColor: "black"
    property real volume: 0.25
    property bool perfMonitorsLogging: false
    property bool perfMonitorsVisible: false

    QtObject {
        id: d
        property int itemHeight: root.height > root.width ? root.width / 10 : root.height / 10
        property int buttonHeight: 0.8 * itemHeight
        property int margins: 5
    }

    Loader {
        id: performanceLoader

        Connections {
            target: inner
            onVisibleChanged:
                if (performanceLoader.item)
                    performanceLoader.item.enabled = !inner.visible
            ignoreUnknownSignals: true
        }

        function init() {
            var enabled = root.perfMonitorsLogging || root.perfMonitorsVisible
            source = enabled ? "../performancemonitor/PerformanceItem.qml" : ""
        }

        onLoaded: {
            item.parent = root
            item.anchors.fill = root
            item.logging = root.perfMonitorsLogging
            item.displayed = root.perfMonitorsVisible
            item.enabled = false
            item.init()
        }
    }

    Rectangle {
        id: inner
        anchors.fill: parent
        color: root.bgColor

        Button {
            id: openFile1Button
            anchors {
                top: parent.top
                left: parent.left
                right: exitButton.left
                margins: d.margins
            }
            bgColor: "#212121"
            bgColorSelected: "#757575"
            textColorSelected: "white"
            height: d.buttonHeight
            text: (root.source1 == "") ? "Select file 1" : root.source1
            onClicked: fileBrowser1.show()
        }

        Button {
            id: openFile2Button
            anchors {
                top: openFile1Button.bottom
                left: parent.left
                right: exitButton.left
                margins: d.margins
            }
            bgColor: "#212121"
            bgColorSelected: "#757575"
            textColorSelected: "white"
            height: d.buttonHeight
            text: (root.source2 == "") ? "Select file 2" : root.source2
            onClicked: fileBrowser2.show()
        }

        Button {
            id: exitButton
            anchors {
                top: parent.top
                right: parent.right
                margins: d.margins
            }
            bgColor: "#212121"
            bgColorSelected: "#757575"
            textColorSelected: "white"
            width: parent.width / 10
            height: d.buttonHeight
            text: "Exit"
            onClicked: Qt.quit()
        }

        Row {
            id: modes
            anchors.top: openFile2Button.bottom
            anchors.margins: 0
            anchors.topMargin: 5
            Button {
                width: root.width / 2
                height: 0.8 * d.itemHeight
                bgColor: "#212121"
                radius: 0
                text: "Video Modes"
                enabled: false
            }
            Button {
                width: root.width / 2
                height: 0.8 * d.itemHeight
                bgColor: "#212121"
                radius: 0
                text: "Camera Modes"
                enabled: false
            }
        }

        Rectangle {
            id: divider
            height: 1
            width: parent.width
            color: "black"
            anchors.top: modes.bottom
        }

        SceneSelectionPanel {
            id: sceneSelectionPanel
            itemHeight: d.itemHeight
            color: "#212121"
            anchors {
                top: divider.bottom
                left: parent.left
                right: parent.right
                bottom: parent.bottom
            }
            radius: 0
            onSceneSourceChanged: {
                sceneLoader.source = sceneSource
                var scene = null
                var innerVisible = true
                if (sceneSource == "") {
                    if (performanceLoader.item)
                        performanceLoader.item.videoActive = false
                } else {
                    scene = sceneLoader.item
                    if (scene) {
                        if (scene.contentType === "video" && source1 === "") {
                            errorDialog.show("You must first select a video file")
                            sceneSource = ""
                        } else {
                            scene.parent = root
                            scene.color = root.bgColor
                            scene.buttonHeight = d.buttonHeight
                            scene.source1 = source1
                            scene.source2 = source2
                            scene.volume = volume
                            scene.anchors.fill = root
                            scene.close.connect(closeScene)
                            scene.content.initialize()
                            innerVisible = false
                        }
                    }
                }
                videoFramePaintedConnection.target = scene
                inner.visible = innerVisible
            }
        }
    }

    Loader {
        id: sceneLoader
    }

    Connections {
        id: videoFramePaintedConnection
        onVideoFramePainted: {
            if (performanceLoader.item)
                performanceLoader.item.videoFramePainted()
        }
        ignoreUnknownSignals: true
    }

    FileBrowser {
        id: fileBrowser1
        anchors.fill: root
        onFolderChanged: fileBrowser2.folder = folder
        Component.onCompleted: fileSelected.connect(root.openFile1)
    }

    FileBrowser {
        id: fileBrowser2
        anchors.fill: root
        onFolderChanged: fileBrowser1.folder = folder
        Component.onCompleted: fileSelected.connect(root.openFile2)
    }

    function openFile1(path) {
        root.source1 = path
    }

    function openFile2(path) {
        root.source2 = path
    }

    ErrorDialog {
        id: errorDialog
        anchors.fill: root
        dialogWidth: d.itemHeight * 5
        dialogHeight: d.itemHeight * 3
        enabled: false
    }

    // Called from main() once root properties have been set
    function init() {
        performanceLoader.init()
        fileBrowser1.folder = videoPath
        fileBrowser2.folder = videoPath
    }

    function qmlFramePainted() {
        if (performanceLoader.item)
            performanceLoader.item.qmlFramePainted()
    }

    function closeScene() {
        sceneSelectionPanel.sceneSource = ""
    }
}

© 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.