Refactor RenderWidgetHostViewQt

Make RenderWidgetHostViewQtDelegateClient class instantiable and remove
its implementation from RenderWidgetHostViewQt.

Change-Id: Idcad3a805defe8b910f418b91f14808b6dbf083b
Reviewed-by: Jüri Valdmann <juri.valdmann@qt.io>

1 files changed, 166 insertions, 0 deletions

diff --git a/src/core/render_widget_host_view_qt_delegate_client.h b/src/core/render_widget_host_view_qt_delegate_client.h
new file mode 100644
index 000000000..bb14fe951
--- /dev/null
+++ b/src/core/render_widget_host_view_qt_delegate_client.h
@@ -0,0 +1,166 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtWebEngine module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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.LGPL3 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-3.0.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 (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef RENDER_WIDGET_HOST_VIEW_QT_DELEGATE_CLIENT_H
+#define RENDER_WIDGET_HOST_VIEW_QT_DELEGATE_CLIENT_H
+
+#include "qtwebenginecoreglobal_p.h"
+
+#include <QtGui/QCursor>
+#include <QtGui/QTouchEvent>
+
+QT_BEGIN_NAMESPACE
+class QEvent;
+class QSGNode;
+class QVariant;
+
+class QMouseEvent;
+class QKeyEvent;
+class QTabletEvent;
+class QNativeGestureEvent;
+class QHoverEvent;
+class QFocusEvent;
+class QInputMethodEvent;
+class QInputMethodQueryEvent;
+QT_END_NAMESPACE
+
+namespace QtWebEngineCore {
+
+class RenderWidgetHostViewQt;
+
+struct MultipleMouseClickHelper
+{
+    QPoint lastPressPosition;
+    Qt::MouseButton lastPressButton = Qt::NoButton;
+    int clickCounter = 0;
+    ulong lastPressTimestamp = 0;
+};
+
+class Q_WEBENGINECORE_PRIVATE_EXPORT RenderWidgetHostViewQtDelegateClient
+{
+public:
+    RenderWidgetHostViewQtDelegateClient(RenderWidgetHostViewQt *rwhv);
+
+    QSGNode *updatePaintNode(QSGNode *);
+    void notifyShown();
+    void notifyHidden();
+    void visualPropertiesChanged();
+    bool forwardEvent(QEvent *);
+    QVariant inputMethodQuery(Qt::InputMethodQuery query);
+    void closePopup();
+
+private:
+    friend class RenderWidgetHostViewQt;
+
+    template<class T>
+    void handlePointerEvent(T *);
+    void handleMouseEvent(QMouseEvent *);
+    void handleKeyEvent(QKeyEvent *);
+    void handleTouchEvent(QTouchEvent *);
+#if QT_CONFIG(tabletevent)
+    void handleTabletEvent(QTabletEvent *);
+#endif
+#if QT_CONFIG(gestures)
+    void handleGestureEvent(QNativeGestureEvent *);
+#endif
+    void handleHoverEvent(QHoverEvent *);
+    void handleFocusEvent(QFocusEvent *);
+    void handleInputMethodEvent(QInputMethodEvent *);
+    void handleInputMethodQueryEvent(QInputMethodQueryEvent *);
+
+    QRect viewRectInDips() const { return m_viewRectInDips; }
+    QRect windowRectInDips() const { return m_windowRectInDips; }
+
+    // Mouse
+    void resetPreviousMousePosition() { m_previousMousePosition = QCursor::pos(); }
+
+    // Touch
+    void clearPreviousTouchMotionState();
+
+    // IME
+    void selectionChanged();
+    void setCursorPosition(uint pos) { m_cursorPosition = pos; }
+    void setSurroundingText(const QString &text) { m_surroundingText = text; }
+    bool isPreviousSelectionEmpty() const { return m_emptyPreviousSelection; }
+
+    RenderWidgetHostViewQt *m_rwhv;
+
+    // Mouse
+    bool m_imeHasHiddenTextCapability;
+    uint m_mouseButtonPressed = 0;
+    QPoint m_previousMousePosition;
+    MultipleMouseClickHelper m_clickHelper;
+
+    // Key
+    std::string m_editCommand;
+
+    // Touch
+    QList<QTouchEvent::TouchPoint> m_previousTouchPoints;
+    bool m_touchMotionStarted = false;
+    bool m_sendMotionActionDown = false;
+
+    // IME
+    bool m_receivedEmptyImeEvent = false;
+    bool m_imeInProgress = false;
+    bool m_emptyPreviousSelection = true;
+    uint m_cursorPosition = 0;
+    int m_anchorPositionWithinSelection = -1;
+    int m_cursorPositionWithinSelection = -1;
+    QString m_surroundingText;
+
+    // Geometry of the view in screen DIPs.
+    QRect m_viewRectInDips;
+    // Geometry of the window, including frame, in screen DIPs.
+    QRect m_windowRectInDips;
+};
+
+} // namespace QtWebEngineCore
+
+#endif // RENDER_WIDGET_HOST_VIEW_QT_DELEGATE_CLIENT_H