Register C++ types declaratively

Adapt to the new way of registering C++ types. The types need to be
seen at compile time so that code can be generated that invokes them.

This patch:

- Adds QML_* macros where applicable.
- Adapts the build system files to the new way of registering modules.
- Splits up the QtQuick.Controls[.*].impl files into their own plugins,
  as we can only register one QML module per .pro file.
- Removes C++ type registration calls in every plugin.
- Moves private types from src/quickcontrols2/quickcontrols2.pro
  to src/quickcontrols2/impl/quickcontrols2-impl.pro. Some of these
  types need to be exposed to QML, but quickcontrols2.pro is already in
  use to declare the QtQuick.Controls import (and also provides the
  public C++ QQuickStyle API), and the new QML_IMPORT_NAME/VERSION
  syntax only allows one module per project. As some of the types that
  need to be exposed to QML are also referenced by some C++ code (e.g.
  tests, etc.), we just move all of the private types to the new
  library.

Follow-up patches will register the QML types declaratively.

Task-number: QTBUG-82922
Change-Id: Iaf9ee106237d61701d57a8896f3822304c8151a6
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

1 files changed, 4 insertions, 2 deletions

diff --git a/src/quicktemplates2/qquickcheckbox_p.h b/src/quicktemplates2/qquickcheckbox_p.h
index 1e333d7c..8e53b41d 100644
--- a/src/quicktemplates2/qquickcheckbox_p.h
+++ b/src/quicktemplates2/qquickcheckbox_p.h
@@ -60,7 +60,9 @@ class Q_QUICKTEMPLATES2_PRIVATE_EXPORT QQuickCheckBox : public QQuickAbstractBut
     Q_PROPERTY(bool tristate READ isTristate WRITE setTristate NOTIFY tristateChanged FINAL)
     Q_PROPERTY(Qt::CheckState checkState READ checkState WRITE setCheckState NOTIFY checkStateChanged FINAL)
     // 2.4 (Qt 5.11)
-    Q_PRIVATE_PROPERTY(QQuickCheckBox::d_func(), QJSValue nextCheckState MEMBER nextCheckState WRITE setNextCheckState NOTIFY nextCheckStateChanged FINAL REVISION 4)
+    Q_PRIVATE_PROPERTY(QQuickCheckBox::d_func(), QJSValue nextCheckState MEMBER nextCheckState WRITE setNextCheckState NOTIFY nextCheckStateChanged FINAL REVISION(2, 4))
+    QML_NAMED_ELEMENT(CheckBox)
+    QML_ADDED_IN_VERSION(2, 0)
 
 public:
     explicit QQuickCheckBox(QQuickItem *parent = nullptr);
@@ -75,7 +77,7 @@ Q_SIGNALS:
     void tristateChanged();
     void checkStateChanged();
     // 2.4 (Qt 5.11)
-    Q_REVISION(4) void nextCheckStateChanged();
+    Q_REVISION(2, 4) void nextCheckStateChanged();
 
 protected:
     QFont defaultFont() const override;