transparentoverlaypresentation.hh

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/*
 * Scroom - Generic viewer for 2D data
 * Copyright (C) 2009-2026 Kees-Jan Dijkzeul
 *
 * SPDX-License-Identifier: LGPL-2.1
 */
 
#pragma once
 
#include <list>
#include <map>
#include <set>
#include <string>
 
#include <cairo.h>
 
#include <scroom/presentationinterface.hh>
#include <scroom/rectangle.hh>
#include <scroom/viewinterface.hh>
 
#include "sizedeterminer.hh"
#include "transparentoverlayviewinfo.hh"
 
class TransparentOverlayPresentation
  : public PresentationBase
  , public Aggregate
{
public:
  using Ptr = std::shared_ptr<TransparentOverlayPresentation>;
 
private:
  using ViewDataMap = Scroom::Utils::WeakKeyMap<ViewInterface::WeakPtr, TransparentOverlayViewInfo::Ptr>;
 
private:
  std::list<PresentationInterface::Ptr> children;
  SizeDeterminer::Ptr sizeDeterminer;
 
  ViewDataMap viewData;
  Scroom::Utils::RecursiveContext::Ptr context;
 
  TransparentOverlayPresentation();
 
public:
  static Ptr create();
 
  // PresentationInterface ///////////////////////////////////////////////
  Scroom::Utils::Rectangle<double> getRect() override;
  void redraw(ViewInterface::Ptr const& vi, cairo_t* cr, Scroom::Utils::Rectangle<double> presentationArea, int zoom) override;
  bool getProperty(const std::string& name, std::string& value) override;
  bool isPropertyDefined(const std::string& name) override;
  std::string getTitle() override;
  void viewAdded(ViewInterface::WeakPtr vi) override;
  void viewRemoved(ViewInterface::WeakPtr vi) override;
  Scroom::Utils::WeakKeySet<ViewInterface::WeakPtr> getViews() override;
 
  // Aggregate ///////////////////////////////////////////////////////////
 
  void addPresentation(PresentationInterface::Ptr const& p) override;
  Scroom::Utils::Context::ConstPtr getContext() const override;
 
private:
  void setOptimalColor(PresentationInterface::Ptr const& p);
};