cmake, gui, main: make user interface reusable

The work isn't complete. We need moving out all non-reusable parts away
and only keeping user interface logic in a class.

5 files changed, 275 insertions, 0 deletions

diff --git a/main/CMakeLists.txt b/main/CMakeLists.txt
new file mode 100644
index 00000000..627501ea
--- /dev/null
+++ b/main/CMakeLists.txt
@@ -0,0 +1,8 @@
+otr_module(executable EXECUTABLE BIN)
+
+set_target_properties(opentrack-user-interface PROPERTIES
+    SUFFIX "${opentrack-binary-suffix}"
+    OUTPUT_NAME "opentrack"
+)
+
+target_link_libraries(opentrack-executable opentrack-user-interface)
diff --git a/main/lang/nl_NL.ts b/main/lang/nl_NL.ts
new file mode 100644
index 00000000..9e739505
--- /dev/null
+++ b/main/lang/nl_NL.ts
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="nl_NL">
+</TS>
diff --git a/main/lang/ru_RU.ts b/main/lang/ru_RU.ts
new file mode 100644
index 00000000..f62cf2e1
--- /dev/null
+++ b/main/lang/ru_RU.ts
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="ru_RU">
+</TS>
diff --git a/main/lang/stub.ts b/main/lang/stub.ts
new file mode 100644
index 00000000..6401616d
--- /dev/null
+++ b/main/lang/stub.ts
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1">
+</TS>
diff --git a/main/main.cpp b/main/main.cpp
new file mode 100644
index 00000000..03c12a8b
--- /dev/null
+++ b/main/main.cpp
@@ -0,0 +1,255 @@
+#ifdef _WIN32
+#   include <cstdio>
+#   include <stdlib.h>
+#   include <vector>
+#   include <QCoreApplication>
+#   include <QFile>
+#   include <QString>
+#   include <QSysInfo>
+#   include <QtGlobal>
+#endif
+
+#include "migration/migration.hpp"
+#include "gui/main-window.hpp"
+#include "options/options.hpp"
+using namespace options;
+#include "opentrack-library-path.h"
+#include <QApplication>
+#include <QCommandLineParser>
+#include <QStyleFactory>
+#include <QStringList>
+#include <QLocale>
+#include <QTranslator>
+#include <QDebug>
+#include <memory>
+#include <cstring>
+
+#if /* denormal control */ \
+    /* GNU */   defined __x86_64__  || defined __SSE2__ || \
+    /* MSVC */  defined _M_AMD64    || (defined _M_IX86_FP && _M_IX86_FP >= 2)
+#   include <xmmintrin.h>
+#   include <pmmintrin.h>
+#   include <float.h>
+
+#define OTR_HAS_DENORM_CONTROL
+void set_fp_mask()
+{
+    unsigned old_mask = _mm_getcsr();
+    (void) old_mask;
+
+    _MM_SET_FLUSH_ZERO_MODE(_MM_FLUSH_ZERO_ON);
+    _MM_SET_DENORMALS_ZERO_MODE(_MM_DENORMALS_ZERO_ON);
+    _MM_SET_ROUNDING_MODE(_MM_ROUND_NEAREST);
+    _MM_SET_EXCEPTION_MASK(_MM_MASK_MASK);
+
+#if 0
+    unsigned new_mask = _mm_getcsr();
+
+    qDebug() << "old" << (void*) old_mask << "new" << (void*) new_mask;
+#endif
+}
+#endif
+
+void set_qt_style()
+{
+#if defined _WIN32
+    if (QSysInfo::WindowsVersion == QSysInfo::WV_XP)
+        return;
+#endif
+
+#if defined(_WIN32) || defined(__APPLE__)
+    // our layouts on OSX make some control wrongly sized -sh 20160908
+    {
+        const QStringList preferred { "fusion", "windowsvista", "macintosh" };
+        for (const auto& style_name : preferred)
+        {
+            QStyle* s = QStyleFactory::create(style_name);
+            if (s)
+            {
+                QApplication::setStyle(s);
+                break;
+            }
+        }
+    }
+#endif
+}
+
+#ifdef _WIN32
+
+void qdebug_to_console(QtMsgType, const QMessageLogContext& ctx, const QString &msg)
+{
+    const unsigned short* const str_ = msg.utf16();
+    auto str = reinterpret_cast<const wchar_t* const>(str_);
+    static_assert(sizeof(*str_) == sizeof(*str), "");
+
+    std::fflush(stderr);
+    if (ctx.function)
+        std::fprintf(stderr, "[%s]: %ls\n", ctx.function, str);
+    else if (ctx.file)
+        std::fprintf(stderr, "[%s:%d]: %ls\n", ctx.file, ctx.line, str);
+    else
+        std::fprintf(stderr, "%ls\n", str);
+    std::fflush(stderr);
+}
+
+void attach_parent_console()
+{
+    if (AttachConsole(ATTACH_PARENT_PROCESS))
+    {
+        // XXX c++ iostreams aren't reopened
+
+        _wfreopen(L"CON", L"w", stdout);
+        _wfreopen(L"CON", L"w", stderr);
+        _wfreopen(L"CON", L"r", stdin);
+        qInstallMessageHandler(qdebug_to_console);
+    }
+}
+
+void add_win32_path()
+{
+    // see https://software.intel.com/en-us/articles/limitation-to-the-length-of-the-system-path-variable
+    static char env_path[4096] { '\0', };
+    {
+        QString lib_path = OPENTRACK_BASE_PATH;
+        lib_path.replace("/", "\\");
+        const QByteArray lib_path_ = QFile::encodeName(lib_path);
+
+        QString mod_path = OPENTRACK_BASE_PATH + OPENTRACK_LIBRARY_PATH;
+        mod_path.replace("/", "\\");
+        const QByteArray mod_path_ = QFile::encodeName(mod_path);
+
+        std::vector<const char*> contents
+        {
+            "PATH=",
+            lib_path_.constData(),
+            ";",
+            mod_path_.constData(),
+            ";",
+            getenv("PATH"),
+        };
+
+        bool ok = true;
+
+        for (const char* ptr : contents)
+        {
+            if (ptr)
+                strcat_s(env_path, sizeof(env_path), ptr);
+
+            if (!ptr || ptr[0] == '\0' || env_path[0] == '\0')
+            {
+                qDebug() << "bad path element"
+                         << (ptr == nullptr ? "<null>" : ptr);
+                ok = false;
+                break;
+            }
+        }
+
+        if (ok)
+        {
+            const int error = _putenv(env_path);
+
+            if (error)
+                qDebug() << "can't _putenv win32 path";
+        }
+        else
+            qDebug() << "can't set win32 path";
+    }
+}
+
+#endif
+
+int
+#ifdef _MSC_VER
+WINAPI
+#endif
+main(int argc, char** argv)
+{
+#ifdef _WIN32
+    attach_parent_console();
+#endif
+
+#if defined OTR_HAS_DENORM_CONTROL
+    set_fp_mask();
+#endif
+
+#if QT_VERSION >= 0x050600 // flag introduced in QT 5.6. It is non-essential so might as well allow compilation on older systems.
+    QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+#endif
+    QApplication::setAttribute(Qt::AA_X11InitThreads, true);
+
+    QApplication app(argc, argv);
+
+#ifdef _WIN32
+    add_win32_path();
+#endif
+
+    main_window::set_working_directory();
+
+#if !defined(__linux) && !defined _WIN32
+    // workaround QTBUG-38598
+    QCoreApplication::addLibraryPath(".");
+#endif
+
+    set_qt_style();
+    QTranslator t;
+
+    // QLocale::setDefault(QLocale("ru_RU")); // force i18n for testing
+
+    if (group::with_global_settings_object([&](QSettings& s) {
+        return !s.value("disable-translation", false).toBool();
+    }))
+    {
+        (void) t.load(QLocale(), "", "", OPENTRACK_BASE_PATH + "/" OPENTRACK_I18N_PATH, ".qm");
+        (void) QCoreApplication::installTranslator(&t);
+    }
+
+    do
+    {
+       std::shared_ptr<main_window> w = std::make_shared<main_window>();
+
+       if (!w->isEnabled())
+           break;
+
+       if (!w->start_in_tray())
+       {
+           w->setVisible(true);
+           w->show();
+           w->adjustSize();
+           w->setFixedSize(w->size());
+       }
+       else
+           w->setVisible(false);
+
+       app.setQuitOnLastWindowClosed(false);
+       app.exec();
+
+       app.exit(0);
+
+       qDebug() << "exit: window";
+    }
+    while (false);
+
+    // msvc crashes in Qt plugin system's dtor
+    // Note: QLibrary::PreventUnloadHint seems to workaround it
+#if defined(_MSC_VER) && 0
+    qDebug() << "exit: terminating";
+    TerminateProcess(GetCurrentProcess(), 0);
+#endif
+
+    qDebug() << "exit: main()";
+
+    return 0;
+}
+
+#if defined(Q_CREATOR_RUN)
+#   pragma clang diagnostic ignored "-Wmain"
+#endif
+
+#ifdef _MSC_VER
+int WINAPI
+WinMain (struct HINSTANCE__*, struct HINSTANCE__*, char*, int)
+{
+  return main (__argc, __argv);
+}
+
+#endif