PdfResources.h

// SPDX-FileCopyrightText: 2007 Dominik Seichter <domseichter@web.de>
// SPDX-FileCopyrightText: 2021 Francesco Pretto <ceztko@gmail.com>
// SPDX-License-Identifier: LGPL-2.0-or-later OR MPL-2.0
 
#ifndef PDF_RESOURCES_H
#define PDF_RESOURCES_H
 
#include "PdfElement.h"
#include "PdfResourceOperations.h"
 
namespace PoDoFo {
 
class PdfFont;
class PdfCanvas;
 
class PODOFO_API PdfResources final : public PdfDictionaryElement, public PdfResourceOperations
{
    friend class PdfPage;
    friend class PdfXObjectForm;
    friend class PdfTilingPattern;
    friend class PdfPainter;
    friend class PdfAcroForm;
 
private:
    PdfResources(PdfDocument& doc);
    PdfResources(PdfObject& obj);
    PdfResources(PdfCanvas& canvas);
 
public:
    static bool TryCreateFromObject(PdfObject& obj, std::unique_ptr<PdfResources>& resources);
 
    const PdfFont* GetFont(const std::string_view& name) const;
 
    PdfObject* GetResource(PdfResourceType type, const std::string_view& key) override;
 
    const PdfObject* GetResource(PdfResourceType type, const std::string_view& key) const override;
    PdfDictionaryIndirectIterable GetResourceIterator(PdfResourceType type) override;
    PdfDictionaryConstIndirectIterable GetResourceIterator(PdfResourceType type) const override;
 
private:
    PdfName AddResource(PdfResourceType type, const PdfObject& obj) override;
    void AddResource(PdfResourceType type, const PdfName& key, const PdfObject& obj) override;
    void RemoveResource(PdfResourceType type, const std::string_view& key) override;
    void RemoveResources(PdfResourceType type) override;
    PdfName AddResource(const PdfName& type, const PdfObject& obj) override;
    void AddResource(const PdfName& type, const PdfName& key, const PdfObject& obj) override;
    PdfDictionaryIndirectIterable GetResourceIterator(const std::string_view& type) override;
    PdfDictionaryConstIndirectIterable GetResourceIterator(const std::string_view& type) const override;
    void RemoveResource(const std::string_view& type, const std::string_view& key) override;
    void RemoveResources(const std::string_view& type) override;
    PdfObject* GetResource(const std::string_view& type, const std::string_view& key) override;
    const PdfObject* GetResource(const std::string_view& type, const std::string_view& key) const override;
    PdfDictionary* GetResourceDictionary(PdfResourceType type) override;
    const PdfDictionary* GetResourceDictionary(PdfResourceType type) const override;
    PdfDictionary* GetResourceDictionary(const std::string_view& type) override;
    const PdfDictionary* GetResourceDictionary(const std::string_view& type) const override;
 
private:
    PdfName addResource(PdfResourceType type, const PdfName& typeName, const PdfObject& obj);
    PdfObject* getResource(const std::string_view& type, const std::string_view& key) const;
    PdfDictionary* getResourceDictionary(const std::string_view& type) const;
    PdfDictionary& getOrCreateResourceDictionary(const PdfName& type);
 
private:
    std::array<unsigned, (unsigned)PdfResourceType::Properties> m_currResourceIds;
};
 
};
 
#endif // PDF_RESOURCES_H