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, 86 insertions, 0 deletions

diff --git a/src/imports/controls/fusion/impl/SliderHandle.qml b/src/imports/controls/fusion/impl/SliderHandle.qml
new file mode 100644
index 00000000..c53af57e
--- /dev/null
+++ b/src/imports/controls/fusion/impl/SliderHandle.qml
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick Controls 2 module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.12
+import QtQuick.Controls 2.12
+import QtQuick.Controls.impl 2.12
+import QtQuick.Controls.Fusion 2.12
+import QtQuick.Controls.Fusion.impl 2.12
+
+Rectangle {
+    id: handle
+
+    property var palette
+    property bool pressed
+    property bool hovered
+    property bool vertical
+    property bool visualFocus
+
+    implicitWidth: 13
+    implicitHeight: 13
+
+    gradient: Gradient {
+        GradientStop {
+            position: 0
+            color: Fusion.gradientStart(Fusion.buttonColor(handle.palette, handle.visualFocus, handle.pressed, handle.hovered))
+        }
+        GradientStop {
+            position: 1
+            color: Fusion.gradientStop(Fusion.buttonColor(handle.palette, handle.visualFocus, handle.pressed, handle.hovered))
+        }
+    }
+    rotation: handle.vertical ? -90 : 0
+    border.width: 1
+    border.color: "transparent"
+    radius: 2
+
+    Rectangle {
+        width: parent.width
+        height: parent.height
+        border.color: handle.visualFocus ? Fusion.highlightedOutline(handle.palette) : Fusion.outline(handle.palette)
+        color: "transparent"
+        radius: 2
+
+        Rectangle {
+            x: 1; y: 1
+            width: parent.width - 2
+            height: parent.height - 2
+            border.color: Fusion.innerContrastLine
+            color: "transparent"
+            radius: 2
+        }
+    }
+}