Add FX & Material showroom demo

Fixes: QTBUG-113477
Pick-to: 6.5.2
Change-Id: I2cdd68027224516b6e6ddacad99d06b6a4dc1ba0
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>

5 files changed, 312 insertions, 0 deletions

diff --git a/examples/demos/FX_Material_Showroom/src/app_environment.h b/examples/demos/FX_Material_Showroom/src/app_environment.h
new file mode 100644
index 000000000..cc243900a
--- /dev/null
+++ b/examples/demos/FX_Material_Showroom/src/app_environment.h
@@ -0,0 +1,11 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QGuiApplication>
+
+void set_qt_environment()
+{
+    qputenv("QT_QUICK_CONTROLS_CONF", ":/qtquickcontrols2.conf");
+    qputenv("QT_ENABLE_HIGHDPI_SCALING", "0");
+    qputenv("QT_AUTO_SCREEN_SCALE_FACTOR", "1");
+}
diff --git a/examples/demos/FX_Material_Showroom/src/imagedownloader.cpp b/examples/demos/FX_Material_Showroom/src/imagedownloader.cpp
new file mode 100644
index 000000000..a83012d86
--- /dev/null
+++ b/examples/demos/FX_Material_Showroom/src/imagedownloader.cpp
@@ -0,0 +1,98 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "imagedownloader.h"
+
+#include <QCoreApplication>
+#include <QDir>
+#include <QFile>
+#include <QNetworkReply>
+#include <QNetworkRequest>
+
+ImageDownloader::ImageDownloader(QObject *parent)
+    : QObject(parent)
+    , m_baseLocal(QCoreApplication::applicationDirPath() + "/content/")
+{}
+
+void ImageDownloader::downloadImages()
+{
+    m_downloadedCount = 0;
+
+    m_downloadPaths = getDownloadList();
+    if (m_downloadPaths.isEmpty())
+        emit finished();
+    else
+        downloadNextAsset();
+}
+
+void ImageDownloader::downloadNextAsset()
+{
+    if (m_downloadedCount < m_downloadPaths.size()) {
+        emit downloadStart(m_downloadedCount + 1);
+
+        const QString &assetUrl = m_downloadPaths[m_downloadedCount];
+        QUrl url(BASE_REMOTE + assetUrl);
+        QNetworkRequest request(url);
+
+        QNetworkReply *reply = m_manager.get(request);
+
+        connect(reply, &QNetworkReply::finished, this, &ImageDownloader::onDownloadFinished);
+        connect(reply, &QNetworkReply::downloadProgress,
+                this, &ImageDownloader::onDownloadProgress);
+    }
+}
+
+QStringList ImageDownloader::getDownloadList() const
+{
+    QStringList downloadList;
+    std::copy_if(assetsList.begin(), assetsList.end(), std::back_inserter(downloadList),
+                 [&](const QString &imgPath) {
+        QString localPath = m_baseLocal + imgPath;
+        return !QFile(localPath).exists();
+    });
+
+    return downloadList;
+}
+
+int ImageDownloader::downloadCount() const
+{
+    return m_downloadPaths.size();
+}
+
+void ImageDownloader::onDownloadProgress(qint64 bytesReceived, qint64 bytesTotal)
+{
+    emit downloadProgress(double(bytesReceived)/double(bytesTotal));
+}
+
+void ImageDownloader::onDownloadFinished()
+{
+    QNetworkReply *reply = qobject_cast<QNetworkReply *>(sender());
+    reply->deleteLater();
+
+    if (reply->error() == QNetworkReply::NoError) {
+        QByteArray imageData = reply->readAll();
+
+        QFileInfo fi(m_baseLocal + m_downloadPaths[m_downloadedCount]);
+        QDir dir (fi.path());
+        if (!dir.exists()) {
+            if (!dir.mkpath("."))
+                qWarning() << "Failed to create save path:" << fi.path();
+        }
+        QFile file(fi.filePath());
+        if (file.open(QIODevice::WriteOnly)) {
+            file.write(imageData);
+            file.close();
+        } else {
+            qWarning() << "Failed to save image:" << file.errorString();
+        }
+    } else {
+        qWarning() << "Download failed:" << reply->errorString();
+    }
+
+    ++m_downloadedCount;
+
+    if (m_downloadedCount == m_downloadPaths.size())
+        emit finished();
+    else
+        downloadNextAsset();
+}
diff --git a/examples/demos/FX_Material_Showroom/src/imagedownloader.h b/examples/demos/FX_Material_Showroom/src/imagedownloader.h
new file mode 100644
index 000000000..ae3d8d541
--- /dev/null
+++ b/examples/demos/FX_Material_Showroom/src/imagedownloader.h
@@ -0,0 +1,141 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QNetworkAccessManager>
+#include <QString>
+
+class ImageDownloader : public QObject
+{
+    Q_OBJECT
+
+public:
+    ImageDownloader(QObject *parent = nullptr);
+
+    int downloadCount() const;
+
+public slots:
+    void downloadImages();
+
+signals:
+    void finished();
+    void downloadStart(int num);
+    void downloadProgress(double progress);
+
+private slots:
+    void onDownloadProgress(qint64 bytesReceived, qint64 bytesTotal);
+    void onDownloadFinished();
+
+private:
+    void downloadNextAsset();
+    QStringList getDownloadList() const;
+
+    QStringList m_downloadPaths;
+    QString m_savePath;
+    int m_downloadedCount = 0;
+    QNetworkAccessManager m_manager;
+    QString m_baseLocal;
+
+    const static inline QString BASE_REMOTE = "https://download.qt.io/learning/examples/FX_Material_Showroom_Assets/";
+
+    const static inline QStringList assetsList {
+        "images/_Desert.hdr",
+        "images/ambientdot.tif",
+        "images/AOBake.png",
+        "images/Asphalt010_2K_NormalGL.png",
+        "images/Asphalt010_2K_Roughness.png",
+        "images/BubblesIcon.png",
+        "images/CheckEmptyVector.png",
+        "images/CheckFilledVector.png",
+        "images/cloud.png",
+        "images/CloudsIcon.png",
+        "images/debris.png",
+        "images/dotsprite.tif",
+        "images/dreamstime_xl_241509362.hdr",
+        "images/dreamstime_xxl_216322508.hdr",
+        "images/dust.png",
+        "images/DustIcon.png",
+        "images/Environment_2K_NIGHT.png",
+        "images/ExplosionIcon.png",
+        "images/Fabric004_2K_NormalGL.png",
+        "images/Fabric031_2K_Color.png",
+        "images/Fabric031_2K_Detail.png",
+        "images/Fabric031_2K_Displacement.png",
+        "images/Fabric031_2K_NormalGL.png",
+        "images/Fabric031_2K_Roughness.png",
+        "images/FabricmatIcon.png",
+        "images/fire.png",
+        "images/FlameIcon.png",
+        "images/FlashIcon.png",
+        "images/HeatwaveIcon.png",
+        "images/LeathermatIcon.png",
+        "images/LighttrailIcon.png",
+        "images/lineSprite.tif",
+        "images/Metal009_2K_NormalGL.png",
+        "images/Metal009_2K_Roughness.png",
+        "images/Metal029_2K_Displacement.jpg",
+        "images/Metal029_2K_Displacement.png",
+        "images/noisenormal.png",
+        "images/NoneIcon.png",
+        "images/ParticleIcon.png",
+        "images/raindrops_multi.tga",
+        "images/RainIcon.png",
+        "images/rainsplash.png",
+        "images/ShockwaveIcon.png",
+        "images/smoke.png",
+        "images/SmokeIcon.png",
+        "images/snowflake_DF.tga",
+        "images/snowflake_DF_multi.tga",
+        "images/SnowIcon.png",
+        "images/spark.png",
+        "images/SparkIcon.png",
+        "images/steam.png",
+        "images/SteamIcon.png",
+        "images/HDR/dreamstime_xl_119184006.png",
+        "images/HDR/dreamstime_xl_182890747.png",
+        "images/HDR/dreamstime_xl_224613382.png",
+        "images/HDR/dreamstime_xxl_241783592.png",
+        "images/Icons/BrushedSteelmatIcon.png",
+        "images/Icons/CarbonFibermatIcon.png",
+        "images/Icons/CheckboxImagesfxIcon-1.png",
+        "images/Icons/CheckboxImagesfxIcon-10.png",
+        "images/Icons/CheckboxImagesfxIcon-2.png",
+        "images/Icons/CheckboxImagesfxIcon-3.png",
+        "images/Icons/CheckboxImagesfxIcon-4.png",
+        "images/Icons/CheckboxImagesfxIcon-4.tif",
+        "images/Icons/CheckboxImagesfxIcon-5.png",
+        "images/Icons/CheckboxImagesfxIcon-6.png",
+        "images/Icons/CheckboxImagesfxIcon-7.png",
+        "images/Icons/CheckboxImagesfxIcon-8.png",
+        "images/Icons/CheckboxImagesfxIcon-9.png",
+        "images/Icons/CheckboxImagesfxIcon.png",
+        "images/Icons/CheckboxImagesmodelIcon-1.png",
+        "images/Icons/CheckboxImagesmodelIcon-2.png",
+        "images/Icons/CheckboxImagesmodelIcon-3.png",
+        "images/Icons/CheckboxImagesmodelIcon.png",
+        "images/Icons/CoppermatIcon.png",
+        "images/Icons/FabricmatIcon.png",
+        "images/Icons/GlassmatIcon.png",
+        "images/Icons/Icon_Colorful.png",
+        "images/Icons/Icon_Dark.png",
+        "images/Icons/Icon_Light.png",
+        "images/Icons/LeathermatIcon.png",
+        "images/Icons/PlasticTexturedmatIcon.png",
+        "images/Icons/SilvermatIcon.png",
+        "images/Icons/StonematIcon.png",
+        "images/Icons/WoodmatIcon.png",
+        "images/leathertextures/Leather037_2K-PNG/Leather037_2K_Color.png",
+        "images/leathertextures/Leather037_2K-PNG/Leather037_2K_NormalGL.png",
+        "images/leathertextures/Leather037_2K-PNG/Leather037_2K_Roughness.png",
+        "images/stonetextures/Rock023_2K_AmbientOcclusion.png",
+        "images/stonetextures/Rock023_2K_Color.png",
+        "images/stonetextures/Rock023_2K_NormalGL.png",
+        "images/stonetextures/Rock023_2K_Roughness.png",
+        "images/woodtextures/Wood048_2K-PNG/Wood048_2K_Color.png",
+        "images/woodtextures/Wood048_2K-PNG/Wood048_2K_NormalGL.png",
+        "images/woodtextures/Wood048_2K-PNG/Wood048_2K_Roughness.png",
+        "Meshes/bunnyUV.mesh",
+        "Meshes/floor.mesh",
+        "Meshes/materialBall.mesh",
+        "Meshes/stanford_Dragon.mesh"
+    };
+};
diff --git a/examples/demos/FX_Material_Showroom/src/import_qml_plugins.h b/examples/demos/FX_Material_Showroom/src/import_qml_plugins.h
new file mode 100644
index 000000000..9a31eefd5
--- /dev/null
+++ b/examples/demos/FX_Material_Showroom/src/import_qml_plugins.h
@@ -0,0 +1,8 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QQmlExtensionPlugin>
+
+Q_IMPORT_QML_PLUGIN(contentPlugin)
+Q_IMPORT_QML_PLUGIN(PocketDemoPlugin)
+Q_IMPORT_QML_PLUGIN(ComponentBundles_MaterialBundlePlugin)
diff --git a/examples/demos/FX_Material_Showroom/src/main.cpp b/examples/demos/FX_Material_Showroom/src/main.cpp
new file mode 100644
index 000000000..890170f91
--- /dev/null
+++ b/examples/demos/FX_Material_Showroom/src/main.cpp
@@ -0,0 +1,54 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+
+#include "imagedownloader.h"
+#include "app_environment.h"
+#include "import_qml_plugins.h"
+
+using namespace Qt::Literals::StringLiterals;
+
+int main(int argc, char *argv[])
+{
+    set_qt_environment();
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine;
+    const QUrl url(u"qrc:Main/main.qml"_qs);
+    QObject::connect(&engine, &QQmlApplicationEngine::objectCreated, &app,
+                [url](QObject *obj, const QUrl &objUrl) {
+        if (!obj && url == objUrl)
+            QCoreApplication::exit(-1);
+    }, Qt::QueuedConnection);
+
+    engine.addImportPath(QCoreApplication::applicationDirPath() + "/qml");
+    engine.addImportPath(":/");
+
+    engine.load(url);
+
+    if (engine.rootObjects().isEmpty())
+        return -1;
+
+    ImageDownloader downloader;
+
+    QObject::connect(&downloader, &ImageDownloader::downloadProgress, &app, [&] (double progress) {
+        QMetaObject::invokeMethod(engine.rootObjects().at(0), "downloadProgress",
+                                  Q_ARG(QVariant, progress));
+    });
+
+    QObject::connect(&downloader, &ImageDownloader::downloadStart, &app, [&] (int num) {
+        QMetaObject::invokeMethod(engine.rootObjects().at(0), "downloadStart",
+                                  Q_ARG(QVariant, num),
+                                  Q_ARG(QVariant, downloader.downloadCount()));
+    });
+
+    QObject::connect(&downloader, &ImageDownloader::finished, &app, [&] {
+        QMetaObject::invokeMethod(engine.rootObjects().at(0), "downloadComplete");
+    });
+
+    downloader.downloadImages();
+
+    return app.exec();
+}