File 0001-greeter-Use-Qt-command-line-parser.patch of Package sddm

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File 0001-greeter-Use-Qt-command-line-parser.patch of Package sddm (Revision c3b1d4b6e8ca33fc095555a33ad04099)

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From 66b764abc0f7fa1562cf2b9ef4d751fd5d5a686e Mon Sep 17 00:00:00 2001
From: Pier Luigi Fiorini <pierluigi.fiorini@liri.io>
Date: Sun, 4 Mar 2018 04:12:55 +0100
Subject: [PATCH 1/2] greeter: Use Qt command line parser

Do not reinvent the wheel with a command line parser.
Restructure the code so that GreeterApp no longer need to
parse arguments itself.
---
 src/greeter/GreeterApp.cpp | 211 +++++++++++++++++++++++++++------------------
 src/greeter/GreeterApp.h   |  30 +++++--
 2 files changed, 149 insertions(+), 92 deletions(-)

diff --git a/src/greeter/GreeterApp.cpp b/src/greeter/GreeterApp.cpp
index 5fb70ea..1230efa 100644
--- a/src/greeter/GreeterApp.cpp
+++ b/src/greeter/GreeterApp.cpp
@@ -1,5 +1,5 @@
 /***************************************************************************
-* Copyright (c) 2015-2016 Pier Luigi Fiorini <pierluigi.fiorini@gmail.com>
+* Copyright (c) 2015-2018 Pier Luigi Fiorini <pierluigi.fiorini@gmail.com>
 * Copyright (c) 2013 Abdurrahman AVCI <abdurrahmanavci@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
@@ -31,6 +31,7 @@
 
 #include "MessageHandler.h"
 
+#include <QCommandLineParser>
 #include <QGuiApplication>
 #include <QQuickItem>
 #include <QQuickView>
@@ -42,98 +43,91 @@
 
 #include <iostream>
 
-namespace SDDM {
-    QString parameter(const QStringList &arguments, const QString &key, const QString &defaultValue) {
-        int index = arguments.indexOf(key);
+#define TR(x) QT_TRANSLATE_NOOP("Command line parser", QStringLiteral(x))
 
-        if ((index < 0) || (index >= arguments.size() - 1))
-            return defaultValue;
+static const QEvent::Type StartupEventType = static_cast<QEvent::Type>(QEvent::registerEventType());
 
-        QString value = arguments.at(index + 1);
+namespace SDDM {
+    GreeterApp::GreeterApp(QObject *parent)
+        : QObject(parent)
+    {
+        // Translations
+        // Components translation
+        m_components_tranlator = new QTranslator();
+        if (m_components_tranlator->load(QLocale::system(), QString(), QString(), QStringLiteral(COMPONENTS_TRANSLATION_DIR)))
+            QCoreApplication::installTranslator(m_components_tranlator);
 
-        if (value.startsWith(QLatin1Char('-')))
-            return defaultValue;
 
-        return value;
+        // Create models
+        m_sessionModel = new SessionModel();
+        m_userModel = new UserModel();
+        m_keyboard = new KeyboardModel();
     }
 
-    GreeterApp *GreeterApp::self = nullptr;
+    bool GreeterApp::isTestModeEnabled() const
+    {
+        return m_testing;
+    }
 
-    GreeterApp::GreeterApp(int &argc, char **argv) : QGuiApplication(argc, argv) {
-        // point instance to this
-        self = this;
+    void GreeterApp::setTestModeEnabled(bool value)
+    {
+        m_testing = value;
+    }
 
-        // Parse arguments
-        bool testing = false;
+    QString GreeterApp::socketName() const
+    {
+        return m_socket;
+    }
 
-        if (arguments().contains(QStringLiteral("--test-mode")))
-            testing = true;
+    void GreeterApp::setSocketName(const QString &name)
+    {
+        m_socket = name;
+    }
 
-        // get socket name
-        QString socket = parameter(arguments(), QStringLiteral("--socket"), QString());
+    QString GreeterApp::themePath() const
+    {
+        return m_themePath;
+    }
 
-        // get theme path (fallback to internal theme)
-        m_themePath = parameter(arguments(), QStringLiteral("--theme"), QString());
+    void GreeterApp::setThemePath(const QString &path)
+    {
+        m_themePath = path;
         if (m_themePath.isEmpty())
             m_themePath = QLatin1String("qrc:/theme");
 
-        // read theme metadata
-        m_metadata = new ThemeMetadata(QStringLiteral("%1/metadata.desktop").arg(m_themePath));
-
-        // Translations
-        // Components translation
-        m_components_tranlator = new QTranslator();
-        if (m_components_tranlator->load(QLocale::system(), QString(), QString(), QStringLiteral(COMPONENTS_TRANSLATION_DIR)))
-            installTranslator(m_components_tranlator);
-
-        // Theme specific translation
-        m_theme_translator = new QTranslator();
-        if (m_theme_translator->load(QLocale::system(), QString(), QString(),
-                           QStringLiteral("%1/%2/").arg(m_themePath, m_metadata->translationsDirectory())))
-            installTranslator(m_theme_translator);
+        // Read theme metadata
+        const QString metadataPath = QStringLiteral("%1/metadata.desktop").arg(m_themePath);
+        if (m_metadata)
+            m_metadata->setTo(metadataPath);
+        else
+            m_metadata = new ThemeMetadata(metadataPath);
 
-        // get theme config file
+        // Get theme config file
         QString configFile = QStringLiteral("%1/%2").arg(m_themePath).arg(m_metadata->configFile());
 
-        // read theme config
-        m_themeConfig = new ThemeConfig(configFile);
+        // Read theme config
+        if (m_themeConfig)
+            m_themeConfig->setTo(configFile);
+        else
+            m_themeConfig = new ThemeConfig(configFile);
 
-        // set default icon theme from greeter theme
+        // Set default icon theme from greeter theme
         if (m_themeConfig->contains(QStringLiteral("iconTheme")))
             QIcon::setThemeName(m_themeConfig->value(QStringLiteral("iconTheme")).toString());
 
-        // create models
-
-        m_sessionModel = new SessionModel();
-        m_userModel = new UserModel();
-        m_proxy = new GreeterProxy(socket);
-        m_keyboard = new KeyboardModel();
-
-        if(!testing && !m_proxy->isConnected()) {
-            qCritical() << "Cannot connect to the daemon - is it running?";
-            exit(EXIT_FAILURE);
-        }
-
-        // Set numlock upon start
-        if (m_keyboard->enabled()) {
-            if (mainConfig.Numlock.get() == MainConfig::NUM_SET_ON)
-                m_keyboard->setNumLockState(true);
-            else if (mainConfig.Numlock.get() == MainConfig::NUM_SET_OFF)
-                m_keyboard->setNumLockState(false);
-        }
-
-        m_proxy->setSessionModel(m_sessionModel);
-
-        // create views
-        QList<QScreen *> screens = primaryScreen()->virtualSiblings();
-        Q_FOREACH (QScreen *screen, screens)
-            addViewForScreen(screen);
+        // Theme specific translation
+        if (m_theme_translator)
+            m_theme_translator->deleteLater();
+        m_theme_translator = new QTranslator();
+        if (m_theme_translator->load(QLocale::system(), QString(), QString(),
+                           QStringLiteral("%1/%2/").arg(m_themePath, m_metadata->translationsDirectory())))
+            QCoreApplication::installTranslator(m_theme_translator);
+    }
 
-        // handle screens
-        connect(this, &GreeterApp::screenAdded, this, &GreeterApp::addViewForScreen);
-        connect(this, &GreeterApp::primaryScreenChanged, this, [this](QScreen *) {
-            activatePrimary();
-        });
+    void GreeterApp::customEvent(QEvent *event)
+    {
+        if (event->type() == StartupEventType)
+            startup();
     }
 
     void GreeterApp::addViewForScreen(QScreen *screen) {
@@ -149,7 +143,7 @@ namespace SDDM {
         // need to be careful here since Qt will move the view to
         // another screen before this signal is emitted so we
         // pass a pointer to the view to our slot
-        connect(this, &GreeterApp::screenRemoved, this, [view, this](QScreen *) {
+        connect(qGuiApp, &QGuiApplication::screenRemoved, this, [view, this](QScreen *) {
             removeViewForScreen(view);
         });
 
@@ -231,6 +225,38 @@ namespace SDDM {
         view->deleteLater();
     }
 
+    void GreeterApp::startup()
+    {
+        // Connect to the daemon
+        m_proxy = new GreeterProxy(m_socket);
+        if (!m_testing && !m_proxy->isConnected()) {
+            qCritical() << "Cannot connect to the daemon - is it running?";
+            QCoreApplication::exit(EXIT_FAILURE);
+        }
+
+        // Set numlock upon start
+        if (m_keyboard->enabled()) {
+            if (mainConfig.Numlock.get() == MainConfig::NUM_SET_ON)
+                m_keyboard->setNumLockState(true);
+            else if (mainConfig.Numlock.get() == MainConfig::NUM_SET_OFF)
+                m_keyboard->setNumLockState(false);
+        }
+
+        // Set session model on proxy
+        m_proxy->setSessionModel(m_sessionModel);
+
+        // Create views
+        QList<QScreen *> screens = qGuiApp->primaryScreen()->virtualSiblings();
+        Q_FOREACH (QScreen *screen, screens)
+            addViewForScreen(screen);
+
+        // Handle screens
+        connect(qGuiApp, &QGuiApplication::screenAdded, this, &GreeterApp::addViewForScreen);
+        connect(qGuiApp, &QGuiApplication::primaryScreenChanged, this, [this](QScreen *) {
+            activatePrimary();
+        });
+    }
+
     void GreeterApp::activatePrimary() {
         // activate and give focus to the window assigned to the primary screen
         Q_FOREACH (QQuickView *view, m_views) {
@@ -240,10 +266,16 @@ namespace SDDM {
             }
         }
     }
+
+    StartupEvent::StartupEvent()
+        : QEvent(StartupEventType)
+    {
+    }
 }
 
-int main(int argc, char **argv) {
-    // install message handler
+int main(int argc, char **argv)
+{
+    // Install message handler
     qInstallMessageHandler(SDDM::GreeterMessageHandler);
 
     // HiDPI
@@ -259,22 +291,29 @@ int main(int argc, char **argv) {
         qDebug() << "High-DPI autoscaling not Enabled";
     }
 
-    QStringList arguments;
+    QGuiApplication app(argc, argv);
 
-    for (int i = 0; i < argc; i++)
-        arguments << QString::fromLocal8Bit(argv[i]);
+    QCommandLineParser parser;
+    parser.setApplicationDescription(TR("SDDM greeter"));
+    parser.addHelpOption();
+    parser.addVersionOption();
 
-    if (arguments.contains(QStringLiteral("--help")) || arguments.contains(QStringLiteral("-h"))) {
-        std::cout << "Usage: " << argv[0] << " [options] [arguments]\n"
-                     "Options: \n"
-                     "  --theme <theme path>       Set greeter theme\n"
-                     "  --socket <socket name>     Set socket name\n"
-                     "  --test-mode                Start greeter in test mode" << std::endl;
+    QCommandLineOption testModeOption(QLatin1String("test-mode"), TR("Start greeter in test mode"));
+    parser.addOption(testModeOption);
 
-        return EXIT_FAILURE;
-    }
+    QCommandLineOption socketOption(QLatin1String("socket"), TR("Socket name"), TR("name"));
+    parser.addOption(socketOption);
+
+    QCommandLineOption themeOption(QLatin1String("theme"), TR("Greeter theme"), TR("path"));
+    parser.addOption(themeOption);
+
+    parser.process(app);
 
-    SDDM::GreeterApp app(argc, argv);
+    SDDM::GreeterApp *greeter = new SDDM::GreeterApp();
+    greeter->setTestModeEnabled(parser.isSet(testModeOption));
+    greeter->setSocketName(parser.value(socketOption));
+    greeter->setThemePath(parser.value(themeOption));
+    QCoreApplication::postEvent(greeter, new SDDM::StartupEvent());
 
     return app.exec();
 }
diff --git a/src/greeter/GreeterApp.h b/src/greeter/GreeterApp.h
index 1ebd981..ed63595 100644
--- a/src/greeter/GreeterApp.h
+++ b/src/greeter/GreeterApp.h
@@ -21,7 +21,7 @@
 #ifndef GREETERAPP_H
 #define GREETERAPP_H
 
-#include <QGuiApplication>
+#include <QObject>
 #include <QScreen>
 #include <QQuickView>
 
@@ -38,27 +38,38 @@ namespace SDDM {
     class KeyboardModel;
 
 
-    class GreeterApp : public QGuiApplication
+    class GreeterApp : public QObject
     {
         Q_OBJECT
         Q_DISABLE_COPY(GreeterApp)
     public:
-        explicit GreeterApp(int &argc, char **argv);
+        explicit GreeterApp(QObject *parent = nullptr);
 
-        static GreeterApp *instance() { return self; }
+        bool isTestModeEnabled() const;
+        void setTestModeEnabled(bool value);
+
+        QString socketName() const;
+        void setSocketName(const QString &name);
+
+        QString themePath() const;
+        void setThemePath(const QString &path);
+
+    protected:
+        void customEvent(QEvent *event) override;
 
     private slots:
         void addViewForScreen(QScreen *screen);
         void removeViewForScreen(QQuickView *view);
 
     private:
-        static GreeterApp *self;
+        bool m_testing = false;
+        QString m_socket;
+        QString m_themePath;
 
         QList<QQuickView *> m_views;
         QTranslator *m_theme_translator { nullptr },
                     *m_components_tranlator { nullptr };
 
-        QString m_themePath;
         ThemeMetadata *m_metadata { nullptr };
         ThemeConfig *m_themeConfig { nullptr };
         SessionModel *m_sessionModel { nullptr };
@@ -66,8 +77,15 @@ namespace SDDM {
         GreeterProxy *m_proxy { nullptr };
         KeyboardModel *m_keyboard { nullptr };
 
+        void startup();
         void activatePrimary();
     };
+
+    class StartupEvent : public QEvent
+    {
+    public:
+        StartupEvent();
+    };
 }
 
 
-- 
2.16.1

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File 0001-greeter-Use-Qt-command-line-parser.patch of Package sddm (Revision c3b1d4b6e8ca33fc095555a33ad04099)

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