sizedeterminer.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 <memory>
#include <set>
 
#include <scroom/presentationinterface.hh>
#include <scroom/resizablepresentationinterface.hh>
 
class SizeDeterminer
{
public:
  using Ptr = std::shared_ptr<SizeDeterminer>;
 
private:
  class PresentationData
  {
  public:
    ResizablePresentationInterface::Ptr const resizablePresentationInterface;
    Scroom::Utils::WeakKeySet<ViewInterface::WeakPtr> views;
 
  public:
    PresentationData(); // Don't use
    explicit PresentationData(ResizablePresentationInterface::Ptr resizablePresentationInterface);
  };
 
private:
  std::list<PresentationInterface::Ptr> presentations;
  std::map<PresentationInterface::Ptr, PresentationData> resizablePresentationData;
 
private:
  SizeDeterminer() = default;
  void sendUpdates();
 
public:
  static Ptr create();
  void add(PresentationInterface::Ptr const& p);
  [[nodiscard]] Scroom::Utils::Rectangle<double> getRect() const;
 
  void open(PresentationInterface::Ptr const& p, ViewInterface::WeakPtr const& vi);
  void close(PresentationInterface::Ptr const& p, ViewInterface::WeakPtr const& vi);
};