OutletPreviewLayer.hpp

#pragma once
#include <Effect/EffectLayer.hpp>
 
#include <Gfx/Widgets/TexturePreview.hpp>
 
#include <QImage>
#include <QString>
#include <QPointer>
 
#include <functional>
#include <optional>
 
#include <score_plugin_gfx_export.h>
 
namespace Gfx
{
class SCORE_PLUGIN_GFX_EXPORT OutletPreviewLayer : public Process::EffectLayerView
{
public:
  OutletPreviewLayer(
      const Process::ProcessModel& process, const Process::Context& doc,
      QGraphicsItem* parent, std::size_t texture_outlet = 0);
  ~OutletPreviewLayer() override;
 
  std::function<std::optional<double>()> aspect;
  QString placeholder;
 
  QRectF imageRect() const;
  const TexturePreview& preview() const noexcept { return m_preview; }
 
protected:
  void paint_impl(QPainter* p) const override;
  void timerEvent(QTimerEvent* ev) override;
  virtual void paintOverlay(QPainter* p, const QRectF& image) const { }
 
private:
  void refresh();
  void updateTimer();
 
  const Process::ProcessModel& m_process;
  std::size_t m_outlet{};
  QPointer<GfxContext> m_context;
  TexturePreview m_preview;
  int m_timer{};
  int m_interval{-1};
};
}