kwin/effects/mousemark/mousemark.h

/*
    KWin - the KDE window manager
    This file is part of the KDE project.

    SPDX-FileCopyrightText: 2007 Lubos Lunak <l.lunak@kde.org>

    SPDX-License-Identifier: GPL-2.0-or-later
*/

#ifndef KWIN_MOUSEMARK_H
#define KWIN_MOUSEMARK_H

#include <kwineffects.h>
#include <kwinglutils.h>
#include <kwinxrenderutils.h>

struct xcb_render_color_t;

namespace KWin
{

class MouseMarkEffect
    : public Effect
{
    Q_OBJECT
    Q_PROPERTY(int width READ configuredWidth)
    Q_PROPERTY(QColor color READ configuredColor)
public:
    MouseMarkEffect();
    ~MouseMarkEffect() override;
    void reconfigure(ReconfigureFlags) override;
    void paintScreen(int mask, const QRegion &region, ScreenPaintData& data) override;
    bool isActive() const override;

    // for properties
    int configuredWidth() const {
        return width;
    }
    QColor configuredColor() const {
        return color;
    }
private Q_SLOTS:
    void clear();
    void clearLast();
    void slotMouseChanged(const QPoint& pos, const QPoint& old,
                              Qt::MouseButtons buttons, Qt::MouseButtons oldbuttons,
                              Qt::KeyboardModifiers modifiers, Qt::KeyboardModifiers oldmodifiers);
    void screenLockingChanged(bool locked);
private:
    typedef QVector< QPoint > Mark;
    void drawMark(QPainter *painter, const Mark &mark);
    static Mark createArrow(QPoint arrow_start, QPoint arrow_end);
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
    void addRect(const QPoint &p1, const QPoint &p2, xcb_rectangle_t *r, xcb_render_color_t *c);
#endif
    QVector< Mark > marks;
    Mark drawing;
    QPoint arrow_start;
    int width;
    QColor color;
};

} // namespace

#endif