File indexing completed on 2024-05-19 16:34:01

 /*
     SPDX-FileCopyrightText: 2022 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #pragma once
 
 #include "kwin_export.h"
 #include "rendertarget.h"
 
 #include <QObject>
 #include <QRegion>
 #include <optional>
 
 namespace KWin
 {
 
 class SurfaceItem;
 
 struct OutputLayerBeginFrameInfo
 {
     RenderTarget renderTarget;
     QRegion repaint;
 };
 
 class KWIN_EXPORT OutputLayer : public QObject
 {
     Q_OBJECT
 public:
     explicit OutputLayer(QObject *parent = nullptr);
 
     QRegion repaints() const;
     void resetRepaints();
     void addRepaint(const QRegion &region);
 
     /**
      * Notifies about starting to paint.
      *
      * @p damage contains the reported damage as suggested by windows and effects on prepaint calls.
      */
     virtual void aboutToStartPainting(const QRegion &damage);
 
     virtual std::optional<OutputLayerBeginFrameInfo> beginFrame() = 0;
     virtual bool endFrame(const QRegion &renderedRegion, const QRegion &damagedRegion) = 0;
 
     /**
      * Tries to import the newest buffer of the surface for direct scanout
      * Returns @c true if scanout succeeds, @c false if rendering is necessary
      */
     virtual bool scanout(SurfaceItem *surfaceItem);
 
 private:
     QRegion m_repaints;
 };
 
 } // namespace KWin