opentiledbitmapinterface.hh

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/*
 * Scroom - Generic viewer for 2D data
 * Copyright (C) 2009-2022 Kees-Jan Dijkzeul
 *
 * SPDX-License-Identifier: LGPL-2.1
 */
 
#pragma once
 
#include <boost/shared_ptr.hpp>
 
#include <gtk/gtk.h>
 
#include <scroom/colormappable.hh>
#include <scroom/interface.hh>
#include <scroom/point.hh>
#include <scroom/rectangle.hh>
#include <scroom/showmetadata.hh>
#include <scroom/tiledbitmaplayer.hh>
 
namespace Scroom::TiledBitmap
{
  using ReloadFunction = std::function<Scroom::Utils::Stuff(const ProgressInterface::Ptr&)>;
 
  struct BitmapMetaData
  {
    std::string                   type;
    unsigned int                  bitsPerSample;
    unsigned int                  samplesPerPixel;
    Scroom::Utils::Rectangle<int> rect; 
    boost::optional<Scroom::Utils::Point<double>> aspectRatio;
    ColormapHelperBase::Ptr                       colormapHelper;
  };
 
  std::ostream&      to_stream(std::ostream& os, const BitmapMetaData& bmd);
  std::string        to_string(const BitmapMetaData& bmd);
  Metadata::Metadata to_metadata(const BitmapMetaData& bmd);
 
  class OpenTiledBitmapInterface : private Interface
  {
  public:
    using Ptr = boost::shared_ptr<OpenTiledBitmapInterface>;
 
  public:
    virtual std::list<GtkFileFilter*> getFilters() = 0;
 
    virtual std::tuple<BitmapMetaData, Layer::Ptr, ReloadFunction> open(const std::string& fileName) = 0;
  };
 
  OpenPresentationInterface::Ptr ToOpenPresentationInterface(OpenTiledBitmapInterface::Ptr openTiledBitmapInterface);
 
 
  extern const std::string RGB;
  extern const std::string CMYK;
  extern const std::string Greyscale;
  extern const std::string Colormapped;
 
  using LayerSpecResult        = std::tuple<LayerSpec, ColormapHelperBase::Ptr>;
  using LayerSpecForBitmapFunc = std::function<LayerSpecResult(const BitmapMetaData& bitmapMetaData)>;
 
  LayerSpecResult LayerSpecForBitmap(const BitmapMetaData& bitmapMetaData);
 
  Scroom::Utils::Stuff
    scheduleLoadingBitmap(const SourcePresentation::Ptr& sp, const Layer::Ptr& layer, const ProgressInterface::Ptr& progress);
 
} // namespace Scroom::TiledBitmap