qml: Add bitcoin module

Author: hebasto

src/Makefile.qt.include

@@ -105,6 +105,7 @@ QT_QRC_LOCALE_CPP = qt/qrc_bitcoin_locale.cpp
 QT_QRC_LOCALE = qt/bitcoin_locale.qrc
 
 BITCOIN_QT_H = \
+  qml/bitcoin.h \
   qt/addressbookpage.h \
   qt/addresstablemodel.h \
   qt/askpassphrasedialog.h \
@@ -276,6 +277,9 @@ BITCOIN_QT_WALLET_CPP = \
   qt/walletmodeltransaction.cpp \
   qt/walletview.cpp
 
+BITCOIN_QML_BASE_CPP = \
+  qml/bitcoin.cpp
+
 BITCOIN_QT_CPP = $(BITCOIN_QT_BASE_CPP)
 if TARGET_WINDOWS
 BITCOIN_QT_CPP += $(BITCOIN_QT_WINDOWS_CPP)
@@ -303,6 +307,10 @@ endif
 
 nodist_qt_libbitcoinqt_a_SOURCES = $(QT_MOC_CPP) $(QT_MOC) $(QT_QRC_CPP) $(QT_QRC_LOCALE_CPP)
 
+if BUILD_WITH_QML
+  qt_libbitcoinqt_a_SOURCES += $(BITCOIN_QML_BASE_CPP)
+endif # BUILD_WITH_QML
+
 # forms/foo.h -> forms/ui_foo.h
 QT_FORMS_H=$(join $(dir $(QT_FORMS_UI)),$(addprefix ui_, $(notdir $(QT_FORMS_UI:.ui=.h))))
 

src/qml/bitcoin.cpp

@@ -0,0 +1,57 @@
+// Copyright (c) 2021 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <qml/bitcoin.h>
+
+#include <init.h>
+#include <interfaces/node.h>
+#include <node/context.h>
+#include <node/ui_interface.h>
+#include <noui.h>
+#include <qt/guiconstants.h>
+#include <util/system.h>
+#include <util/translation.h>
+
+#include <boost/signals2/connection.hpp>
+#include <memory>
+
+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+
+namespace {
+void SetupUIArgs(ArgsManager& argsman)
+{
+    argsman.AddArg("-lang=<lang>", "Set language, for example \"de_DE\" (default: system locale)", ArgsManager::ALLOW_ANY, OptionsCategory::GUI);
+    argsman.AddArg("-min", "Start minimized", ArgsManager::ALLOW_ANY, OptionsCategory::GUI);
+    argsman.AddArg("-resetguisettings", "Reset all settings changed in the GUI", ArgsManager::ALLOW_ANY, OptionsCategory::GUI);
+    argsman.AddArg("-splash", strprintf("Show splash screen on startup (default: %u)", DEFAULT_SPLASHSCREEN), ArgsManager::ALLOW_ANY, OptionsCategory::GUI);
+}
+} // namespace
+
+
+int QmlGuiMain(int argc, char* argv[])
+{
+    NodeContext node_context;
+    std::unique_ptr<interfaces::Node> node = interfaces::MakeNode(&node_context);
+
+    // Subscribe to global signals from core
+    boost::signals2::scoped_connection handler_message_box = ::uiInterface.ThreadSafeMessageBox_connect(noui_ThreadSafeMessageBox);
+    boost::signals2::scoped_connection handler_question = ::uiInterface.ThreadSafeQuestion_connect(noui_ThreadSafeQuestion);
+    boost::signals2::scoped_connection handler_init_message = ::uiInterface.InitMessage_connect(noui_InitMessage);
+
+    QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+    QGuiApplication app(argc, argv);
+    QQmlApplicationEngine engine;
+
+    // Parse command-line options. We do this after qt in order to show an error if there are problems parsing these.
+    SetupServerArgs(gArgs);
+    SetupUIArgs(gArgs);
+    std::string error;
+    if (!gArgs.ParseParameters(argc, argv, error)) {
+        InitError(strprintf(Untranslated("Error parsing command line arguments: %s\n"), error));
+        return EXIT_FAILURE;
+    }
+
+    return app.exec();
+}

src/qml/bitcoin.h

@@ -0,0 +1,10 @@
+// Copyright (c) 2021 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_QML_BITCOIN_H
+#define BITCOIN_QML_BITCOIN_H
+
+int QmlGuiMain(int argc, char* argv[]);
+
+#endif // BITCOIN_QML_BITCOIN_H

src/qt/main.cpp

@@ -2,7 +2,15 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#ifdef HAVE_CONFIG_H
+#include <config/bitcoin-config.h>
+#endif
+
+#if USE_QML
+#include <qml/bitcoin.h>
+#else
 #include <qt/bitcoin.h>
+#endif // USE_QML
 
 #include <util/system.h>
 #include <util/threadnames.h>
@@ -31,5 +39,9 @@ int main(int argc, char* argv[])
     SetupEnvironment();
     util::ThreadSetInternalName("main");
 
+#if USE_QML
+    return QmlGuiMain(argc, argv);
+#else
     return GuiMain(argc, argv);
+#endif // USE_QML
 }