Lua cpp expose

Exposition to Lua runtime mechanism proposition.

The user has to create an object that is LuaScriptAbleObject, make it inherit the CRTPLuaScriptObject class and voila.

For example, a simple FooBar examples might be:

// Default sample exposer for lua scripts
script_class (SampleObject) {
    LUA_SCRIPTABLE_CLASS(SampleObject)

    SampleObject()  noexcept { fprintf(stderr, "CREATE SampleObject\n"); }
    ~SampleObject() noexcept { fprintf(stderr, "DESTROY SampleObject\n"); }

    static int foo(lua_State *L) noexcept
    {
        SampleObject *obj = CHECK(L, 1);
        double bar        = luaL_checknumber(L, 2);
        return 0;
    }

    static constexpr inline auto metaMethods = { luaRegDefaultGC, LUA_DECL_CREATE(SampleObject) };
    static constexpr inline auto methods     = { LUA_DECL_METHOD(SampleObject, foo) };
};

A sample file for a script can be found at utils/lua/sample-spec.lua, this is just a proposition.

src/UI/AboutWindow.cc

@@ -37,56 +37,49 @@ static const char *libContent =
     "  </ul>"
     "</body>";
 
-// Simple QLabel with some presets
-class SimpleLabel final : public QLabel {
-public:
-    explicit SimpleLabel(QWidget *parent, const char *text)
-        : QLabel(parent)
-    {
-        setTextFormat(Qt::RichText);
-        setTextInteractionFlags(Qt::NoTextInteraction | Qt::LinksAccessibleByMouse |
-                                Qt::LinksAccessibleByKeyboard);
-        setText(text);
-        setAlignment(Qt::AlignJustify | Qt::AlignTop);
-    }
-};
-
-// Simple QLabel for licences
-class LicenceLabel final : public QTextEdit {
-public:
-    explicit LicenceLabel(QWidget *parent, const QString &url, const Qt::TextFormat format)
-        : QTextEdit(parent)
-    {
-        QFile content(url);
-        if (!content.open(QIODevice::ReadOnly | QIODevice::Text))
-            throw std::runtime_error("Failed to open file that should be accessible");
-
-        setTextInteractionFlags(Qt::NoTextInteraction);
-        setAlignment(Qt::AlignJustify | Qt::AlignTop);
-        setAcceptRichText(true);
-        setReadOnly(true);
-        setAutoFormatting(QTextEdit::AutoAll);
-
-        setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
-        setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
-        setFont(vivyApp->getApplicationFont(VivyApplication::Font::Monospace));
-        setFrameStyle(QFrame::NoFrame);
-
-        switch (format) {
-        case Qt::PlainText:
-        case Qt::RichText:
-            setText(content.readAll());
-            break;
-
-        case Qt::MarkdownText:
-            setMarkdown(content.readAll());
-            break;
-
-        case Qt::AutoText:
-            qCritical() << "Invalid text format for LicenceLabel" << format;
-        }
+AboutWindow::SimpleLabel::SimpleLabel(QWidget *parent, const char *text)
+    : QLabel(parent)
+{
+    setTextFormat(Qt::RichText);
+    setTextInteractionFlags(Qt::NoTextInteraction | Qt::LinksAccessibleByMouse |
+                            Qt::LinksAccessibleByKeyboard);
+    setText(text);
+    setAlignment(Qt::AlignJustify | Qt::AlignTop);
+}
+
+AboutWindow::LicenceLabel::LicenceLabel(QWidget *parent, const QString &url,
+                                        const Qt::TextFormat format)
+    : QTextEdit(parent)
+{
+    QFile content(url);
+    if (!content.open(QIODevice::ReadOnly | QIODevice::Text))
+        throw std::runtime_error("Failed to open file that should be accessible");
+
+    setTextInteractionFlags(Qt::NoTextInteraction);
+    setAlignment(Qt::AlignJustify | Qt::AlignTop);
+    setAcceptRichText(true);
+    setReadOnly(true);
+    setAutoFormatting(QTextEdit::AutoAll);
+
+    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
+    setFont(vivyApp->getApplicationFont(VivyApplication::Font::Monospace));
+    setFrameStyle(QFrame::NoFrame);
+
+    switch (format) {
+    case Qt::PlainText:
+    case Qt::RichText:
+        setText(content.readAll());
+        break;
+
+    case Qt::MarkdownText:
+        setMarkdown(content.readAll());
+        break;
+
+    case Qt::AutoText:
+        qCritical() << "Invalid text format for LicenceLabel" << format;
     }
-};
+}
 
 // Construct the AboutWindow
 AboutWindow::AboutWindow(QWidget *parent) noexcept