qdesigner_toolbar_p.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of Qt Designer.  This header
// file may change from version to version without notice, or even be removed.
//
// We mean it.
//
 
#ifndef QDESIGNER_TOOLBAR_H
#define QDESIGNER_TOOLBAR_H
 
#include "shared_global_p.h"
 
#include <QtWidgets/qtoolbutton.h>
 
#include <QtGui/qaction.h>
 
#include <QtCore/qlist.h>
#include <QtCore/qpoint.h>
 
QT_BEGIN_NAMESPACE
 
class QDesignerFormWindowInterface;
class QToolBar;
class QRect;
class QAction;
 
namespace qdesigner_internal {
 
class PromotionTaskMenu;
 
// Special event filter for  tool bars in designer.
// Handles drag and drop to and from. Ensures that each
// child widget is  WA_TransparentForMouseEvents to enable  drag and drop.
 
class QDESIGNER_SHARED_EXPORT ToolBarEventFilter : public QObject {
    Q_OBJECT
 
public:
    static void install(QToolBar *tb);
 
    // Find action by position. Note that QToolBar::actionAt() will
    // not work as designer sets WA_TransparentForMouseEvents on its tool bar buttons
    // to be able to drag them. This function will return the dummy
    // sentinel action when applied to tool bars created by designer if the position matches.
    static QAction *actionAt(const QToolBar *tb, const QPoint &pos);
 
    static bool withinHandleArea(const QToolBar *tb, const QPoint &pos);
    static QRect handleArea(const QToolBar *tb);
    static QRect freeArea(const QToolBar *tb);
 
    // Utility to create an action
    static QAction *createAction(QDesignerFormWindowInterface *fw, const QString &objectName, bool separator);
 
    bool eventFilter (QObject *watched, QEvent *event) override;
 
    // Helper for task menu extension
    QList<QAction *> contextMenuActions(const QPoint &globalPos = QPoint(-1, -1));
 
    static ToolBarEventFilter *eventFilterOf(const QToolBar *tb);
 
private slots:
    void slotRemoveSelectedAction();
    void slotRemoveToolBar();
    void slotInsertSeparator();
 
private:
    explicit ToolBarEventFilter(QToolBar *tb);
 
    bool handleContextMenuEvent(QContextMenuEvent * event);
    bool handleDragEnterMoveEvent(QDragMoveEvent *event);
    bool handleDragLeaveEvent(QDragLeaveEvent *);
    bool handleDropEvent(QDropEvent *event);
    bool handleMousePressEvent(QMouseEvent *event);
    bool handleMouseReleaseEvent(QMouseEvent *event);
    bool handleMouseMoveEvent(QMouseEvent *event);
 
    QDesignerFormWindowInterface *formWindow() const;
    void adjustDragIndicator(const QPoint &pos);
    void hideDragIndicator();
    bool startDrag(const QPoint &pos, Qt::KeyboardModifiers modifiers);
    bool withinHandleArea(const QPoint &pos) const;
 
    QToolBar *m_toolBar;
    PromotionTaskMenu *m_promotionTaskMenu;
    QPoint m_startPosition;
};
} // namespace qdesigner_internal
 
QT_END_NAMESPACE
 
#endif // QDESIGNER_TOOLBAR_H