* Transport.h
* Copyright 1999-2000 Y.Takagi. All Rights Reserved.
*/
#ifndef __TRANSPORT_H
#define __TRANSPORT_H
#include <image.h>
#include <string>
class BDataIO;
class PrinterData;
using namespace std;
extern "C" {
typedef BDataIO *(*PFN_init_transport)(BMessage *);
typedef void (*PFN_exit_transport)(void);
}
class TransportException {
public:
TransportException(const string &what_arg);
const char* What() const;
private:
string fWhat;
};
class Transport {
public:
Transport(const PrinterData* printerData);
~Transport();
void Write(const void *buffer, size_t size)
;
void Read(void *buffer, size_t size)
;
bool CheckAbort() const;
bool IsPrintToFileCanceled() const;
const string& LastError() const;
protected:
Transport(const Transport& transport);
Transport &operator=(const Transport& transport);
void SetLastError(const char* message);
private:
image_id fImage;
PFN_init_transport fInitTransport;
PFN_exit_transport fExitTransport;
BDataIO* fDataStream;
bool fAbort;
string fLastErrorString;
};
#endif
