trackmouse.h

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/*
    KWin - the KDE window manager
    This file is part of the KDE project.
 
    SPDX-FileCopyrightText: 2006 Lubos Lunak <l.lunak@kde.org>
    SPDX-FileCopyrightText: 2010 Jorge Mata <matamax123@gmail.com>
    SPDX-FileCopyrightText: 2018 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
    SPDX-License-Identifier: GPL-2.0-or-later
*/
 
#pragma once
 
#include "effect/effect.h"
 
class QAction;
 
namespace KWin
{
class GLTexture;
 
class TrackMouseEffect
    : public Effect
{
    Q_OBJECT
    Q_PROPERTY(Qt::KeyboardModifiers modifiers READ modifiers)
    Q_PROPERTY(bool mousePolling READ isMousePolling)
public:
    TrackMouseEffect();
    ~TrackMouseEffect() override;
    void prePaintScreen(ScreenPrePaintData &data, std::chrono::milliseconds presentTime) override;
    void paintScreen(const RenderTarget &renderTarget, const RenderViewport &viewport, int mask, const QRegion &region, Output *screen) override;
    void postPaintScreen() override;
    void reconfigure(ReconfigureFlags) override;
    bool isActive() const override;
 
    // for properties
    Qt::KeyboardModifiers modifiers() const
    {
        return m_modifiers;
    }
    bool isMousePolling() const
    {
        return m_mousePolling;
    }
private Q_SLOTS:
    void toggle();
    void slotMouseChanged(const QPointF &pos, const QPointF &old,
                          Qt::MouseButtons buttons, Qt::MouseButtons oldbuttons,
                          Qt::KeyboardModifiers modifiers, Qt::KeyboardModifiers oldmodifiers);
 
private:
    bool init();
    void loadTexture();
    QRect m_lastRect[2];
    bool m_mousePolling;
    float m_angle;
    float m_angleBase;
    std::unique_ptr<GLTexture> m_texture[2];
    QAction *m_action;
    QImage m_image[2];
    Qt::KeyboardModifiers m_modifiers;
 
    enum class State {
        ActivatedByModifiers,
        ActivatedByShortcut,
        Inactive
    };
    State m_state = State::Inactive;
};
 
} // namespace