- Qt 5.15
- Qt Quick Demo - Photo Viewer
- Qt 5.15.17 Reference Documentation

# Qt Quick Demo - Photo Viewer

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     import QtQuick 2.2
     import QtQuick.Controls 1.1
     import QtQml.Models 2.1
     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
         }
     }