refactor: Launcher supports Network Disk Cache

Author: longseespace

launcher/Launcher.pro

@@ -1,12 +1,15 @@
-QT += quickcontrols2 websockets svg
+QT += quickcontrols2 websockets svg network
 android|ios|qnx|winrt|isEmpty(QT.widgets.name): CONFIG += no_desktop
 !no_desktop: QT += widgets
 
 CONFIG(debug, debug|release) {
-  message("debug mode")
   DEFINES += DEBUG
-} else {
-  message("release mode")
+}
+
+isEqual(PRODUCTION, "true") {
+  message("Production Build")
+  DEFINES += PRODUCTION
+  RESOURCES += dist/bundle.qrc
 }
 
 QMAKE_TARGET_COMPANY = Podzim
@@ -16,10 +19,12 @@ TARGET = Launcher
 
 HEADERS += \
   qtquickcontrolsapplication.h \
-  ReactQML/rq.h
+  ReactQML/rq.h \
+    ReactQML/rqnetworkaccessmanagerfactory.h
 
 
 SOURCES += main.cpp \
-  ReactQML/rq.cpp
+  ReactQML/rq.cpp \
+    ReactQML/rqnetworkaccessmanagerfactory.cpp
 
 RESOURCES += main.qrc

launcher/ReactQML/rq.cpp

@@ -10,7 +10,8 @@ QObject *RQ::qmlInstance(QQmlEngine *engine, QJSEngine *scriptEngine) {
   return rq;
 }
 
-RQ::RQ(QQmlEngine *engine) : m_engine(engine) {
+RQ::RQ(QQmlEngine *engine)
+    : m_engine(engine), m_nam(new RQNetworkAccessManagerFactory()) {
   // timer context
   m_timer_context = new QQmlContext(m_engine->rootContext());
   m_timer_component = new QQmlComponent(m_engine);
@@ -23,6 +24,9 @@ RQ::RQ(QQmlEngine *engine) : m_engine(engine) {
 
   // error handling
   connect(m_engine, &QQmlEngine::warnings, this, &RQ::onQmlWarnings);
+
+  // disk cache
+  engine->setNetworkAccessManagerFactory(m_nam);
 }
 
 RQ::~RQ() {

launcher/ReactQML/rq.h

@@ -1,6 +1,8 @@
 #ifndef RQ_H
 #define RQ_H
 
+#include "rqnetworkaccessmanagerfactory.h"
+
 #include <QObject>
 #include <QQmlComponent>
 #include <QQmlContext>
@@ -33,6 +35,8 @@ private slots:
 
   QQmlContext *m_ws_context;
   QQmlComponent *m_ws_component;
+
+  RQNetworkAccessManagerFactory *m_nam;
 };
 
 #endif // RQ_H

launcher/ReactQML/rqnetworkaccessmanagerfactory.cpp

@@ -0,0 +1,12 @@
+#include "rqnetworkaccessmanagerfactory.h"
+
+#include <QNetworkAccessManager>
+#include <QNetworkDiskCache>
+
+QNetworkAccessManager *RQNetworkAccessManagerFactory::create(QObject *parent) {
+  QNetworkAccessManager *nam = new QNetworkAccessManager(parent);
+  auto cache = new QNetworkDiskCache(parent);
+  cache->setCacheDirectory("react-qml-httpcache");
+  nam->setCache(cache);
+  return nam;
+}

launcher/ReactQML/rqnetworkaccessmanagerfactory.h

@@ -0,0 +1,11 @@
+#ifndef RQNETWORKACCESSMANAGERFACTORY_H
+#define RQNETWORKACCESSMANAGERFACTORY_H
+
+#include <QQmlNetworkAccessManagerFactory>
+
+class RQNetworkAccessManagerFactory : public QQmlNetworkAccessManagerFactory {
+public:
+  QNetworkAccessManager *create(QObject *parent);
+};
+
+#endif // RQNETWORKACCESSMANAGERFACTORY_H

launcher/main.cpp

@@ -3,9 +3,15 @@
 #include <QQmlContext>
 #include <QQuickStyle>
 
+#ifdef PRODUCTION
+#define PRODUCTION_BUILD true
+#else
+#define PRODUCTION_BUILD false
+#endif
+
 int main(int argc, char *argv[]) {
   // Disable qml cache, or it would crash in development
-  qputenv("QML_DISABLE_DISK_CACHE", "true");
+  qputenv("QML_DISABLE_DISK_CACHE", PRODUCTION_BUILD ? "false" : "true");
 
   // This has the app draw at HiDPI scaling on HiDPI displays, usually two
   // pixels for every one logical pixel
@@ -21,18 +27,27 @@ int main(int argc, char *argv[]) {
   // - <QtGui/QGuiApplication> (on other platform)
   QtQuickControlsApplication app(argc, argv);
 
-  // Do not automatically quit on last window closed
+  // Do not automatically quit on last window closed in development
   // We need this for hot-reloading
+  // in macOS, always set this to false
+#ifdef Q_OS_MAC
   app.setQuitOnLastWindowClosed(false);
-
+#else
+  app.setQuitOnLastWindowClosed(PRODUCTION_BUILD);
+#endif
   // setup app basic metadata
   app.setOrganizationName("Podzim");
   app.setOrganizationDomain("podzim.co");
   app.setApplicationName("Launcher");
 
   QQmlApplicationEngine engine;
   engine.addImportPath(QStringLiteral("qrc:/"));
-  engine.load(QUrl(QLatin1String("qrc:/main.qml")));
+
+  if (PRODUCTION_BUILD) {
+    engine.load(QUrl(QLatin1String("qrc:/index.qml")));
+  } else {
+    engine.load(QUrl(QLatin1String("qrc:/react-qml/main.qml")));
+  }
 
   return app.exec();
 }

launcher/main.qrc

@@ -1,5 +1,5 @@
 <RCC>
-  <qresource prefix="/">
-    <file>main.qml</file>
-  </qresource>
+    <qresource prefix="/react-qml">
+        <file>main.qml</file>
+    </qresource>
 </RCC>