temp-buf.h 2.53 KB
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/* The GIMP -- an image manipulation program
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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 */
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#ifndef __TEMP_BUF_H__
#define __TEMP_BUF_H__


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struct _TempBuf
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{
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  gint      bytes;      /*  The necessary info  */
  gint      width;
  gint      height;
  gint      x, y;       /*  origin of data source  */
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  gboolean  swapped;    /*  flag indicating whether buf is cached to disk  */
  gchar    *filename;   /*  filename of cached information  */
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  guchar   *data;       /*  The data buffer     */
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};


/*  The temp buffer functions  */

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TempBuf * temp_buf_new        (gint     width,
			       gint     height,
			       gint     bytes,
			       gint     x,
			       gint     y,
			       guchar  *col);
TempBuf * temp_buf_copy       (TempBuf *src,
			       TempBuf *dest);
TempBuf * temp_buf_resize     (TempBuf *buf,
			       gint     bytes,
			       gint     x,
			       gint     y,
			       gint     width,
			       gint     height);
TempBuf * temp_buf_copy_area  (TempBuf *src,
			       TempBuf *dest,
			       gint     x,
			       gint     y,
			       gint     width,
			       gint     height,
			       gint     border);
void      temp_buf_free       (TempBuf *buf);
guchar  * temp_buf_data       (TempBuf *buf);
guchar  * temp_buf_data_clear (TempBuf *buf);
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/* The mask buffer functions  */

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MaskBuf * mask_buf_new        (gint     width,
			       gint     height);
void      mask_buf_free       (MaskBuf *mask_buf);
guchar  * mask_buf_data       (MaskBuf *mask_buf);
guchar  * mask_buf_data_clear (MaskBuf *mask_buf);
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/*  The disk caching functions  */

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void      temp_buf_swap       (TempBuf *buf);
void      temp_buf_unswap     (TempBuf *buf);
void      temp_buf_swap_free  (TempBuf *buf);
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/*  Called by app_procs:exit() to free up the cached undo buffer  */
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void      swapping_free       (void);
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#endif  /*  __TEMP_BUF_H__  */