shadowitem.h

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/*
    SPDX-FileCopyrightText: 2021 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
    SPDX-License-Identifier: GPL-2.0-or-later
*/
 
#pragma once
 
#include "scene/item.h"
 
namespace KWin
{
 
class Shadow;
class Window;
 
class KWIN_EXPORT ShadowTextureProvider
{
public:
    explicit ShadowTextureProvider(Shadow *shadow);
    virtual ~ShadowTextureProvider();
 
    Shadow *shadow() const { return m_shadow; }
 
    virtual void update() = 0;
 
protected:
    Shadow *m_shadow;
};
 
class KWIN_EXPORT ShadowItem : public Item
{
    Q_OBJECT
 
public:
    explicit ShadowItem(Shadow *shadow, Window *window, Scene *scene, Item *parent = nullptr);
    ~ShadowItem() override;
 
    Shadow *shadow() const;
    ShadowTextureProvider *textureProvider() const;
 
protected:
    WindowQuadList buildQuads() const override;
    void preprocess() override;
 
private Q_SLOTS:
    void handleTextureChanged();
    void updateGeometry();
 
private:
    Window *m_window;
    Shadow *m_shadow = nullptr;
    std::unique_ptr<ShadowTextureProvider> m_textureProvider;
    bool m_textureDirty = true;
};
 
} // namespace KWin