libmng_callback_xs.c

Linux下的基于X11的图形开发环境。

/* ************************************************************************** */
/* *             For conditions of distribution and use,                    * */
/* *                see copyright notice in libmng.h                        * */
/* ************************************************************************** */
/* *                                                                        * */
/* * project   : libmng                                                     * */
/* * file      : libmng_callback_xs.c      copyright (c) 2000 G.Juyn        * */
/* * version   : 1.0.2                                                      * */
/* *                                                                        * */
/* * purpose   : callback get/set interface (implementation)                * */
/* *                                                                        * */
/* * author    : G.Juyn                                                     * */
/* * web       : http://www.3-t.com                                         * */
/* * email     : mailto:[e-mail]                                        * */
/* *                                                                        * */
/* * comment   : implementation of the callback get/set functions           * */
/* *                                                                        * */
/* * changes   : 0.5.1 - 05/08/2000 - G.Juyn                                * */
/* *             - fixed calling convention                                 * */
/* *             - changed strict-ANSI stuff                                * */
/* *             0.5.1 - 05/12/2000 - G.Juyn                                * */
/* *             - changed trace to macro for callback error-reporting      * */
/* *                                                                        * */
/* *             0.5.2 - 05/31/2000 - G.Juyn                                * */
/* *             - fixed up punctuation (contribution by Tim Rowley)        * */
/* *             0.5.2 - 06/02/2000 - G.Juyn                                * */
/* *             - added getalphaline callback for RGB8_A8 canvasstyle      * */
/* *                                                                        * */
/* *             0.9.1 - 07/15/2000 - G.Juyn                                * */
/* *             - added callbacks for SAVE/SEEK processing                 * */
/* *                                                                        * */
/* *             0.9.2 - 08/05/2000 - G.Juyn                                * */
/* *             - changed file-prefixes                                    * */
/* *                                                                        * */
/* *             0.9.3 - 10/11/2000 - G.Juyn                                * */
/* *             - added support for nEED                                   * */
/* *             0.9.3 - 10/17/2000 - G.Juyn                                * */
/* *             - added callback to process non-critical unknown chunks    * */
/* *                                                                        * */
/* *             1.0.1 - 02/08/2001 - G.Juyn                                * */
/* *             - added MEND processing callback                           * */
/* *                                                                        * */
/* *             1.0.2 - 06/23/2001 - G.Juyn                                * */
/* *             - added processterm callback                               * */
/* *                                                                        * */
/* ************************************************************************** */

#include "libmng.h"
#include "libmng_data.h"
#include "libmng_error.h"
#include "libmng_trace.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif

#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI)
#pragma option -A                      /* force ANSI-C */
#endif

/* ************************************************************************** */
/* *                                                                        * */
/* *  Callback set functions                                                * */
/* *                                                                        * */
/* ************************************************************************** */

#ifndef MNG_INTERNAL_MEMMNGMT
mng_retcode MNG_DECL mng_setcb_memalloc (mng_handle   hHandle,
                                         mng_memalloc fProc)
{
#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_MEMALLOC, MNG_LC_START)
#endif

  MNG_VALIDHANDLE (hHandle)
  ((mng_datap)hHandle)->fMemalloc = fProc;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_MEMALLOC, MNG_LC_END)
#endif

  return MNG_NOERROR;
}
#endif /* MNG_INTERNAL_MEMMNGMT */

/* ************************************************************************** */

#ifndef MNG_INTERNAL_MEMMNGMT
mng_retcode MNG_DECL mng_setcb_memfree (mng_handle  hHandle,
                                        mng_memfree fProc)
{
#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_MEMFREE, MNG_LC_START)
#endif

  MNG_VALIDHANDLE (hHandle)
  ((mng_datap)hHandle)->fMemfree = fProc;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_MEMFREE, MNG_LC_END)
#endif

  return MNG_NOERROR;
}
#endif /* MNG_INTERNAL_MEMMNGMT */

/* ************************************************************************** */

#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
mng_retcode MNG_DECL mng_setcb_openstream (mng_handle     hHandle,
                                           mng_openstream fProc)
{
#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_OPENSTREAM, MNG_LC_START)
#endif

  MNG_VALIDHANDLE (hHandle)
  ((mng_datap)hHandle)->fOpenstream = fProc;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_OPENSTREAM, MNG_LC_END)
#endif

  return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */

/* ************************************************************************** */

#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
mng_retcode MNG_DECL mng_setcb_closestream (mng_handle      hHandle,
                                            mng_closestream fProc)
{
#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_CLOSESTREAM, MNG_LC_START)
#endif

  MNG_VALIDHANDLE (hHandle)
  ((mng_datap)hHandle)->fClosestream = fProc;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_CLOSESTREAM, MNG_LC_END)
#endif

  return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */

/* ************************************************************************** */

#ifdef MNG_SUPPORT_READ
mng_retcode MNG_DECL mng_setcb_readdata (mng_handle   hHandle,
                                         mng_readdata fProc)
{
#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_READDATA, MNG_LC_START)
#endif

  MNG_VALIDHANDLE (hHandle)
  ((mng_datap)hHandle)->fReaddata = fProc;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_READDATA, MNG_LC_END)
#endif

  return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_READ */

/* ************************************************************************** */

#ifdef MNG_SUPPORT_WRITE
mng_retcode MNG_DECL mng_setcb_writedata (mng_handle    hHandle,
                                          mng_writedata fProc)
{
#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_WRITEDATA, MNG_LC_START)
#endif

  MNG_VALIDHANDLE (hHandle)
  ((mng_datap)hHandle)->fWritedata = fProc;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_WRITEDATA, MNG_LC_END)
#endif

  return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_WRITE */

/* ************************************************************************** */

mng_retcode MNG_DECL mng_setcb_errorproc (mng_handle    hHandle,
                                          mng_errorproc fProc)
{
#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_ERRORPROC, MNG_LC_START)
#endif

  MNG_VALIDHANDLE (hHandle)
  ((mng_datap)hHandle)->fErrorproc = fProc;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_ERRORPROC, MNG_LC_END)
#endif

  return MNG_NOERROR;
}

/* ************************************************************************** */

#ifdef MNG_SUPPORT_TRACE
mng_retcode MNG_DECL mng_setcb_traceproc (mng_handle    hHandle,
                                          mng_traceproc fProc)
{
#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_TRACEPROC, MNG_LC_START)
#endif

  MNG_VALIDHANDLE (hHandle)
  ((mng_datap)hHandle)->fTraceproc = fProc;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_TRACEPROC, MNG_LC_END)
#endif

  return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_TRACE */

/* ************************************************************************** */

#ifdef MNG_SUPPORT_READ
mng_retcode MNG_DECL mng_setcb_processheader (mng_handle        hHandle,
                                              mng_processheader fProc)
{
#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_PROCESSHEADER, MNG_LC_START)
#endif

  MNG_VALIDHANDLE (hHandle)
  ((mng_datap)hHandle)->fProcessheader = fProc;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_PROCESSHEADER, MNG_LC_END)
#endif

  return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_READ */

/* ************************************************************************** */

#ifdef MNG_SUPPORT_READ
mng_retcode MNG_DECL mng_setcb_processtext (mng_handle      hHandle,
                                            mng_processtext fProc)
{
#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_PROCESSTEXT, MNG_LC_START)
#endif

  MNG_VALIDHANDLE (hHandle)
  ((mng_datap)hHandle)->fProcesstext = fProc;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_PROCESSTEXT, MNG_LC_END)
#endif

  return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_READ */

/* ************************************************************************** */

#ifdef MNG_SUPPORT_READ
mng_retcode MNG_DECL mng_setcb_processsave (mng_handle      hHandle,
                                            mng_processsave fProc)
{
#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_PROCESSSAVE, MNG_LC_START)
#endif

  MNG_VALIDHANDLE (hHandle)
  ((mng_datap)hHandle)->fProcesssave = fProc;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_PROCESSSAVE, MNG_LC_END)
#endif

  return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_READ */

/* ************************************************************************** */

#ifdef MNG_SUPPORT_READ
mng_retcode MNG_DECL mng_setcb_processseek (mng_handle      hHandle,
                                            mng_processseek fProc)
{
#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_PROCESSSEEK, MNG_LC_START)
#endif

  MNG_VALIDHANDLE (hHandle)
  ((mng_datap)hHandle)->fProcessseek = fProc;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_PROCESSSEEK, MNG_LC_END)
#endif

  return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_READ */

/* ************************************************************************** */

#ifdef MNG_SUPPORT_READ
mng_retcode MNG_DECL mng_setcb_processneed (mng_handle      hHandle,
                                            mng_processneed fProc)
{
#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_PROCESSNEED, MNG_LC_START)
#endif

  MNG_VALIDHANDLE (hHandle)
  ((mng_datap)hHandle)->fProcessneed = fProc;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_PROCESSNEED, MNG_LC_END)
#endif

  return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_READ */

/* ************************************************************************** */

#ifdef MNG_SUPPORT_READ
mng_retcode MNG_DECL mng_setcb_processmend (mng_handle      hHandle,
                                            mng_processmend fProc)
{
#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_PROCESSMEND, MNG_LC_START)
#endif

  MNG_VALIDHANDLE (hHandle)
  ((mng_datap)hHandle)->fProcessmend = fProc;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_PROCESSMEND, MNG_LC_END)
#endif

  return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_READ */

/* ************************************************************************** */

#ifdef MNG_SUPPORT_READ
mng_retcode MNG_DECL mng_setcb_processunknown (mng_handle         hHandle,
                                               mng_processunknown fProc)
{
#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_PROCESSUNKNOWN, MNG_LC_START)
#endif

  MNG_VALIDHANDLE (hHandle)
  ((mng_datap)hHandle)->fProcessunknown = fProc;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (((mng_datap)hHandle), MNG_FN_SETCB_PROCESSUNKNOWN, MNG_LC_END)
#endif

  return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_READ */

/* ************************************************************************** */

#ifdef MNG_SUPPORT_READ
mng_retcode MNG_DECL mng_setcb_processterm (mng_handle      hHandle,
                                            mng_processterm fProc)
{
#ifdef MNG_SUPPORT_TRACE