86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
|
// This may look like C code, but it is really -*- C++ -*-
|
||
|
|
//
|
||
|
|
// Copyright Bob Friesenhahn, 1999, 2000, 2001, 2002
|
||
|
|
//
|
||
|
|
// Copyright @ 2014 ImageMagick Studio LLC, a non-profit organization
|
||
|
|
// dedicated to making software imaging solutions freely available.
|
||
|
|
//
|
||
|
|
// Definition of an Image reference
|
||
|
|
//
|
||
|
|
// This is a private implementation class which should never be
|
||
|
|
// referenced by any user code.
|
||
|
|
//
|
||
|
|
|
||
|
|
#if !defined(Magick_ImageRef_header)
|
||
|
|
#define Magick_ImageRef_header
|
||
|
|
|
||
|
|
#include "Magick++/Include.h"
|
||
|
|
#include "Magick++/Thread.h"
|
||
|
|
#include <string>
|
||
|
|
|
||
|
|
namespace Magick
|
||
|
|
{
|
||
|
|
class Options;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Reference counted access to Image *
|
||
|
|
//
|
||
|
|
class MagickPPExport ImageRef
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
|
||
|
|
// Construct with null image and default options
|
||
|
|
ImageRef(void);
|
||
|
|
|
||
|
|
// Construct with an image pointer and default options
|
||
|
|
ImageRef(MagickCore::Image *image_);
|
||
|
|
|
||
|
|
// Destroy image and options
|
||
|
|
~ImageRef(void);
|
||
|
|
|
||
|
|
// Decreases reference count and return the new count
|
||
|
|
size_t decrease();
|
||
|
|
|
||
|
|
// Retrieve image from reference
|
||
|
|
MagickCore::Image *&image(void);
|
||
|
|
|
||
|
|
// Increases reference count
|
||
|
|
void increase();
|
||
|
|
|
||
|
|
// Returns true if the reference count is more than one
|
||
|
|
bool isShared();
|
||
|
|
|
||
|
|
// Retrieve Options from reference
|
||
|
|
void options(Options *options_);
|
||
|
|
Options *options(void);
|
||
|
|
|
||
|
|
// Tries to replaces the images with the specified image, returns
|
||
|
|
// a new instance when the current image is shared.
|
||
|
|
static ImageRef *replaceImage(ImageRef *imgRef,
|
||
|
|
MagickCore::Image *replacement_);
|
||
|
|
|
||
|
|
// Image signature. Set force_ to true in order to re-calculate
|
||
|
|
// the signature regardless of whether the image data has been
|
||
|
|
// modified.
|
||
|
|
std::string signature(const bool force_=false);
|
||
|
|
|
||
|
|
private:
|
||
|
|
|
||
|
|
// Construct with an image pointer and options
|
||
|
|
ImageRef(MagickCore::Image *image_,const Options *options_);
|
||
|
|
|
||
|
|
// Copy constructor and assignment are not supported
|
||
|
|
ImageRef(const ImageRef&);
|
||
|
|
|
||
|
|
ImageRef& operator=(const ImageRef&);
|
||
|
|
|
||
|
|
MagickCore::Image *_image; // ImageMagick Image
|
||
|
|
MutexLock _mutexLock; // Mutex lock
|
||
|
|
Options *_options; // User-specified options
|
||
|
|
::ssize_t _refCount; // Reference count
|
||
|
|
};
|
||
|
|
|
||
|
|
} // end of namespace Magick
|
||
|
|
|
||
|
|
#endif // Magick_ImageRef_header
|