feat: example QT app

qt-example-app/.gitignore

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+
+# https://github.com/github/gitignore/blob/master/CMake.gitignore
+# ==============================================================================
+
+CMakeLists.txt.user
+CMakeCache.txt
+CMakeFiles
+CMakeScripts
+Testing
+Makefile
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+CTestTestfile.cmake
+_deps
+
+
+
+# https://github.com/github/gitignore/blob/master/C%2B%2B.gitignore
+# ==============================================================================
+
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app

qt-example-app/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.14)
+
+project(test-qtapp LANGUAGES CXX)
+
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+set(CMAKE_AUTOUIC ON)
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+include(ExternalProject)
+
+# QtCreator supports the following variables for Android, which are identical to qmake Android variables.
+# Check https://doc.qt.io/qt/deployment-android.html for more information.
+# They need to be set before the find_package(...) calls below.
+
+#if(ANDROID)
+#    set(ANDROID_PACKAGE_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/android")
+#    if (ANDROID_ABI STREQUAL "armeabi-v7a")
+#        set(ANDROID_EXTRA_LIBS
+#            ${CMAKE_CURRENT_SOURCE_DIR}/path/to/libcrypto.so
+#            ${CMAKE_CURRENT_SOURCE_DIR}/path/to/libssl.so)
+#    endif()
+#endif()
+
+find_package(QT NAMES Qt6 Qt5 COMPONENTS Core Quick REQUIRED)
+find_package(Qt${QT_VERSION_MAJOR} COMPONENTS Core Quick REQUIRED)
+
+set(PROJECT_SOURCES
+        main.cpp
+        qml.qrc
+)
+
+if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
+    qt_add_executable(test-qtapp
+        ${PROJECT_SOURCES}
+    )
+else()
+    if(ANDROID)
+        add_library(test-qtapp SHARED
+            ${PROJECT_SOURCES}
+        )
+    else()
+        add_executable(test-qtapp
+          ${PROJECT_SOURCES}
+        )
+    endif()
+endif()
+
+# status-go has a CMakeLists.txt file we can use
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../vendor/status-lib/vendor/status-go bin/status-go)
+
+target_compile_definitions(test-qtapp
+  PRIVATE $<$<OR:$<CONFIG:Debug>,$<CONFIG:RelWithDebInfo>>:QT_QML_DEBUG>)
+
+target_link_libraries(test-qtapp
+  PRIVATE
+    Qt${QT_VERSION_MAJOR}::Core
+    Qt${QT_VERSION_MAJOR}::Quick
+    statusgo_shared) # <- Link status-go with this target (remove `_shared` for static linking)

qt-example-app/README.md

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+# Example QT app
+
+```
+cd build
+cmake ..
+make
+./test-qtapp
+```
+
+This example app just shows how to plug-in status-go in a qt-app.
+Also check [status-cpp](https://github.com/richard-ramos/status-cpp)

qt-example-app/build/.gitignore

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+*
+!.gitignore

qt-example-app/main.cpp

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+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <iostream>
+
+extern "C"
+{
+#include "libstatus.h"
+}
+
+int main(int argc, char *argv[])
+{
+
+    QString hello = "Hello World!";
+    const char* result = HashMessage(hello.toUtf8().data()); // <- HashMessage comes from libstatus.h
+    const auto response = QJsonDocument::fromJson(QString(result).toUtf8()).object(); // <- For now, status-go always returns json
+	if (!response["error"].isUndefined() || !response["error"].toString().isEmpty()){ // <- Always do error handling
+        std::cout << "Could not obtain hash: " << response["result"].toString().toStdString() << std::endl << std::flush;
+    } else {
+        std::cout << "Hash of HelloWorld: " << response["result"].toString().toStdString() << std::endl << std::flush;
+    }
+
+    // For handling signals, see:
+    // https://github.com/richard-ramos/status-cpp/blob/master/src/core/status.cpp#L36
+    // https://github.com/richard-ramos/status-cpp/blob/master/src/core/status.cpp#L124-L127
+
+
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
+    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+#endif
+
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine;
+    const QUrl url(QStringLiteral("qrc:/main.qml"));
+    QObject::connect(
+        &engine, &QQmlApplicationEngine::objectCreated,
+        &app, [url](QObject *obj, const QUrl &objUrl)
+        {
+            if (!obj && url == objUrl)
+                QCoreApplication::exit(-1);
+        },
+        Qt::QueuedConnection);
+    engine.load(url);
+
+    return app.exec();
+}

qt-example-app/main.qml

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+import QtQuick 2.14
+import QtQuick.Window 2.14
+
+Window {
+    width: 640
+    height: 480
+    visible: true
+    title: qsTr("Hello World")
+}

qt-example-app/qml.qrc

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+<RCC>
+    <qresource prefix="/">
+        <file>main.qml</file>
+    </qresource>
+</RCC>