Qt Quick Demo - Photo Viewer

/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples 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.Controls
import "PhotoViewerCore"

ApplicationWindow {
    id: mainWindow

    visible: true

    Rectangle {
        focus: true

        Keys.onBackPressed: {
            event.accepted = true
            backButton.clicked()
        }
    }

    property real downloadProgress: 0
    property bool imageLoading: false
    property bool editMode: false

    width: 800; height: 480; color: "#d5d6d8"

    ListModel {
        id: photosModel
        ListElement { tag: "Flowers" }
        ListElement { tag: "Wildlife" }
        ListElement { tag: "Prague" }
    }

    DelegateModel { id: albumVisualModel; model: photosModel; delegate: AlbumDelegate {} }

    GridView {
        id: albumView; width: parent.width; height: parent.height; cellWidth: 210; cellHeight: 220
        model: albumVisualModel.parts.album; visible: albumsShade.opacity != 1.0
    }

    Column {
        spacing: 20; anchors { bottom: parent.bottom; right: parent.right; rightMargin: 20; bottomMargin: 20 }
        Button {
            id: newButton; label: qsTr("Add"); rotation: 3
            anchors.horizontalCenter: parent.horizontalCenter
            onClicked: {
                mainWindow.editMode = false
                photosModel.append( { tag: "" } )
                albumView.positionViewAtIndex(albumView.count - 1, GridView.Contain)
            }
        }
        Button {
            id: deleteButton; label: qsTr("Edit"); rotation: -2;
            onClicked: mainWindow.editMode = !mainWindow.editMode
            anchors.horizontalCenter: parent.horizontalCenter
        }
        Button {
            id: quitButton; label: qsTr("Quit"); rotation: -2;
            onClicked: Qt.quit()
            anchors.horizontalCenter: parent.horizontalCenter
        }
    }

    Rectangle {
        id: albumsShade; color: mainWindow.color
        width: parent.width; height: parent.height; opacity: 0.0
    }

    ListView { anchors.fill: parent; model: albumVisualModel.parts.browser; interactive: false }

    Button {
        id: backButton
        label: qsTr("Back")
        rotation: 3
        x: parent.width - backButton.width - 6
        y: -backButton.height - 8
        visible: Qt.platform.os !== "android"
    }

    Rectangle { id: photosShade; color: 'black'; width: parent.width; height: parent.height; opacity: 0; visible: opacity != 0.0 }

    ListView { anchors.fill: parent; model: albumVisualModel.parts.fullscreen; interactive: false }

    Item { id: foreground; anchors.fill: parent }

    ProgressBar {
        progress: mainWindow.downloadProgress; width: parent.width; height: 4
        anchors.bottom: parent.bottom; opacity: mainWindow.imageLoading; visible: opacity != 0.0
    }
}