PdfCanvas.h

 
#ifndef PDF_CANVAS_H
#define PDF_CANVAS_H
 
#include "PdfDeclarations.h"
#include "PdfResources.h"
#include "PdfArray.h"
#include <podofo/auxiliary/Rect.h>
 
namespace PoDoFo {
 
enum class PdfStreamAppendFlags
{
    None = 0,
    Prepend = 1,
    NoSaveRestorePrior = 2
};
 
class PODOFO_API PdfCanvas
{
public:
    virtual ~PdfCanvas();
 
    const PdfObject* GetContentsObject() const;
    PdfObject* GetContentsObject();
 
    virtual PdfObjectStream& GetOrCreateContentsStream(PdfStreamAppendFlags flags) = 0;
 
    virtual PdfObjectStream& ResetContentsStream() = 0;
 
    charbuff GetContentsCopy() const;
 
    void CopyContentsTo(charbuff& buffer) const;
    virtual void CopyContentsTo(OutputStream& stream) const = 0;
 
    PdfObject* GetFromResources(PdfResourceType type, const std::string_view& key);
    const PdfObject* GetFromResources(PdfResourceType type, const std::string_view& key) const;
 
    PdfResources* GetResources();
    const PdfResources* GetResources() const;
 
    PdfDictionaryElement& GetElement();
    const PdfDictionaryElement& GetElement() const;
 
    virtual PdfResources& GetOrCreateResources() = 0;
 
    virtual void EnsureResourcesCreated() = 0;
 
    virtual Rect GetRectRaw() const = 0;
 
    virtual bool HasRotation(double& teta) const = 0;
 
protected:
    virtual PdfObject* getContentsObject() = 0;
    virtual PdfResources* getResources() = 0;
    virtual PdfDictionaryElement& getElement() = 0;
 
private:
    PdfObject* getFromResources(PdfResourceType type, const std::string_view& key);
};
 
};
 
ENABLE_BITMASK_OPERATORS(PoDoFo::PdfStreamAppendFlags);
 
#endif // PDF_CANVAS_H