File indexing completed on 2024-05-12 05:32:06

 /*
     SPDX-FileCopyrightText: 2021 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #pragma once
 
 #include "scene/item.h"
 
 namespace KDecoration2
 {
 class Decoration;
 }
 
 namespace KWin
 {
 
 class Window;
 class Output;
 
 namespace Decoration
 {
 class DecoratedClientImpl;
 }
 
 class KWIN_EXPORT DecorationRenderer : public QObject
 {
     Q_OBJECT
 
 public:
     virtual void render(const QRegion &region) = 0;
     void invalidate();
 
     // TODO: Move damage tracking inside DecorationItem.
     QRegion damage() const;
     void addDamage(const QRegion &region);
     void resetDamage();
 
     qreal effectiveDevicePixelRatio() const;
     qreal devicePixelRatio() const;
     void setDevicePixelRatio(qreal dpr);
 
     // Reserve some space for padding. We pad decoration parts to avoid texture bleeding.
     static const int TexturePad = 1;
 
 Q_SIGNALS:
     void damaged(const QRegion &region);
 
 protected:
     explicit DecorationRenderer(Decoration::DecoratedClientImpl *client);
 
     Decoration::DecoratedClientImpl *client() const;
 
     bool areImageSizesDirty() const
     {
         return m_imageSizesDirty;
     }
     void resetImageSizesDirty()
     {
         m_imageSizesDirty = false;
     }
     void renderToPainter(QPainter *painter, const QRect &rect);
 
 private:
     QPointer<Decoration::DecoratedClientImpl> m_client;
     QRegion m_damage;
     qreal m_devicePixelRatio = 1;
     bool m_imageSizesDirty;
 };
 
 /**
  * The DecorationItem class represents a server-side decoration.
  */
 class KWIN_EXPORT DecorationItem : public Item
 {
     Q_OBJECT
 
 public:
     explicit DecorationItem(KDecoration2::Decoration *decoration, Window *window, Scene *scene, Item *parent = nullptr);
 
     DecorationRenderer *renderer() const;
     Window *window() const;
 
     QList<QRectF> shape() const override final;
     QRegion opaque() const override final;
 
 private Q_SLOTS:
     void handleFrameGeometryChanged();
     void handleOutputChanged();
     void handleOutputScaleChanged();
 
 protected:
     void preprocess() override;
     WindowQuadList buildQuads() const override;
 
 private:
     Window *m_window;
     QPointer<Output> m_output;
     QPointer<KDecoration2::Decoration> m_decoration;
     std::unique_ptr<DecorationRenderer> m_renderer;
 };
 
 } // namespace KWin