x11_standalone_windowselector.h

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/*
    KWin - the KDE window manager
    This file is part of the KDE project.
 
    SPDX-FileCopyrightText: 1999, 2000 Matthias Ettrich <ettrich@kde.org>
    SPDX-FileCopyrightText: 2003 Lubos Lunak <l.lunak@kde.org>
    SPDX-FileCopyrightText: 2012 Martin Gräßlin <mgraesslin@kde.org>
 
    SPDX-License-Identifier: GPL-2.0-or-later
*/
 
#pragma once
 
#include "x11eventfilter.h"
 
#include <xcb/xcb.h>
 
#include <functional>
 
class QPointF;
 
namespace KWin
{
class Window;
 
class WindowSelector : public X11EventFilter
{
public:
    WindowSelector();
    ~WindowSelector() override;
 
    void start(std::function<void(KWin::Window *)> callback, const QByteArray &cursorName);
    void start(std::function<void(const QPointF &)> callback);
    bool isActive() const
    {
        return m_active;
    }
    void processEvent(xcb_generic_event_t *event);
 
    bool event(xcb_generic_event_t *event) override;
 
private:
    xcb_cursor_t createCursor(const QByteArray &cursorName);
    void release();
    void selectWindowUnderPointer();
    void handleKeyPress(xcb_keycode_t keycode, uint16_t state);
    void handleButtonRelease(xcb_button_t button, xcb_window_t window);
    void selectWindowId(xcb_window_t window_to_kill);
    bool activate(const QByteArray &cursorName = QByteArray());
    void cancelCallback();
    bool m_active;
    std::function<void(KWin::Window *)> m_callback;
    std::function<void(const QPointF &)> m_pointSelectionFallback;
};
 
} // namespace