fallapart.h

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/*
    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
*/
 
#pragma once
 
#include "effect/effectwindow.h"
#include "effect/offscreeneffect.h"
 
namespace KWin
{
 
struct FallApartAnimation
{
    EffectWindowDeletedRef deletedRef;
    std::chrono::milliseconds lastPresentTime = std::chrono::milliseconds::zero();
    qreal progress = 0;
};
 
class FallApartEffect : public OffscreenEffect
{
    Q_OBJECT
    Q_PROPERTY(int blockSize READ configuredBlockSize)
public:
    FallApartEffect();
    void reconfigure(ReconfigureFlags) override;
    void prePaintScreen(ScreenPrePaintData &data, std::chrono::milliseconds presentTime) override;
    void prePaintWindow(EffectWindow *w, WindowPrePaintData &data, std::chrono::milliseconds presentTime) override;
    void postPaintScreen() override;
    bool isActive() const override;
 
    int requestedEffectChainPosition() const override
    {
        return 70;
    }
 
    // for properties
    int configuredBlockSize() const
    {
        return blockSize;
    }
 
    static bool supported();
 
protected:
    void apply(EffectWindow *w, int mask, WindowPaintData &data, WindowQuadList &quads) override;
 
public Q_SLOTS:
    void slotWindowClosed(KWin::EffectWindow *c);
    void slotWindowDataChanged(KWin::EffectWindow *w, int role);
 
private:
    QHash<EffectWindow *, FallApartAnimation> windows;
    bool isRealWindow(EffectWindow *w);
    int blockSize;
};
 
} // namespace