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ftrender.h

/****************************************************************************
 *
 * ftrender.h
 *
 *   FreeType renderer modules public interface (specification).
 *
 * Copyright (C) 1996-2020 by
 * David Turner, Robert Wilhelm, and Werner Lemberg.
 *
 * This file is part of the FreeType project, and may only be used,
 * modified, and distributed under the terms of the FreeType project
 * license, LICENSE.TXT.  By continuing to use, modify, or distribute
 * this file you indicate that you have read the license and
 * understand and accept it fully.
 *
 */

#ifndef FTRENDER_H_
#define FTRENDER_H_

#include <freetype/ftmodapi.h>
#include <freetype/ftglyph.h>

FT_BEGIN_HEADER

/**************************************************************************
   *
   * @section:
   *   module_management
   *
   */

/* create a new glyph object */
  typedef FT_Error
  (*FT_Glyph_InitFunc)( FT_Glyph      glyph,
                        FT_GlyphSlot  slot );

/* destroys a given glyph object */
  typedef void
  (*FT_Glyph_DoneFunc)( FT_Glyph  glyph );

typedef void
  (*FT_Glyph_TransformFunc)( FT_Glyph          glyph,
                             const FT_Matrix*  matrix,
                             const FT_Vector*  delta );

typedef void
  (*FT_Glyph_GetBBoxFunc)( FT_Glyph  glyph,
                           FT_BBox*  abbox );

typedef FT_Error
  (*FT_Glyph_CopyFunc)( FT_Glyph   source,
                        FT_Glyph   target );

typedef FT_Error
  (*FT_Glyph_PrepareFunc)( FT_Glyph      glyph,
                           FT_GlyphSlot  slot );

/* deprecated */
#define FT_Glyph_Init_Func       FT_Glyph_InitFunc
#define FT_Glyph_Done_Func       FT_Glyph_DoneFunc
#define FT_Glyph_Transform_Func  FT_Glyph_TransformFunc
#define FT_Glyph_BBox_Func       FT_Glyph_GetBBoxFunc
#define FT_Glyph_Copy_Func       FT_Glyph_CopyFunc
#define FT_Glyph_Prepare_Func    FT_Glyph_PrepareFunc

struct  FT_Glyph_Class_
  {
    FT_Long                 glyph_size;
    FT_Glyph_Format         glyph_format;

FT_Glyph_InitFunc       glyph_init;
    FT_Glyph_DoneFunc       glyph_done;
    FT_Glyph_CopyFunc       glyph_copy;
    FT_Glyph_TransformFunc  glyph_transform;
    FT_Glyph_GetBBoxFunc    glyph_bbox;
    FT_Glyph_PrepareFunc    glyph_prepare;
  };

typedef FT_Error
  (*FT_Renderer_RenderFunc)( FT_Renderer       renderer,
                             FT_GlyphSlot      slot,
                             FT_Render_Mode    mode,
                             const FT_Vector*  origin );

typedef FT_Error
  (*FT_Renderer_TransformFunc)( FT_Renderer       renderer,
                                FT_GlyphSlot      slot,
                                const FT_Matrix*  matrix,
                                const FT_Vector*  delta );

typedef void
  (*FT_Renderer_GetCBoxFunc)( FT_Renderer   renderer,
                              FT_GlyphSlot  slot,
                              FT_BBox*      cbox );

typedef FT_Error
  (*FT_Renderer_SetModeFunc)( FT_Renderer  renderer,
                              FT_ULong     mode_tag,
                              FT_Pointer   mode_ptr );

/* deprecated identifiers */
#define FTRenderer_render  FT_Renderer_RenderFunc
#define FTRenderer_transform  FT_Renderer_TransformFunc
#define FTRenderer_getCBox  FT_Renderer_GetCBoxFunc
#define FTRenderer_setMode  FT_Renderer_SetModeFunc

/**************************************************************************
   *
   * @struct:
   *   FT_Renderer_Class
   *
   * @description:
   *   The renderer module class descriptor.
   *
   * @fields:
   *   root ::
   *     The root @FT_Module_Class fields.
   *
   *   glyph_format ::
   *     The glyph image format this renderer handles.
   *
   *   render_glyph ::
   *     A method used to render the image that is in a given glyph slot into
   *     a bitmap.
   *
   *   transform_glyph ::
   *     A method used to transform the image that is in a given glyph slot.
   *
   *   get_glyph_cbox ::
   *     A method used to access the glyph's cbox.
   *
   *   set_mode ::
   *     A method used to pass additional parameters.
   *
   *   raster_class ::
   *     For @FT_GLYPH_FORMAT_OUTLINE renderers only.  This is a pointer to
   *     its raster's class.
   */
  typedef struct  FT_Renderer_Class_
  {
    FT_Module_Class            root;

FT_Glyph_Format            glyph_format;

FT_Renderer_RenderFunc     render_glyph;
    FT_Renderer_TransformFunc  transform_glyph;
    FT_Renderer_GetCBoxFunc    get_glyph_cbox;
    FT_Renderer_SetModeFunc    set_mode;

FT_Raster_Funcs*           raster_class;

} FT_Renderer_Class;

/**************************************************************************
   *
   * @function:
   *   FT_Get_Renderer
   *
   * @description:
   *   Retrieve the current renderer for a given glyph format.
   *
   * @input:
   *   library ::
   *     A handle to the library object.
   *
   *   format ::
   *     The glyph format.
   *
   * @return:
   *   A renderer handle.  0~if none found.
   *
   * @note:
   *   An error will be returned if a module already exists by that name, or
   *   if the module requires a version of FreeType that is too great.
   *
   *   To add a new renderer, simply use @FT_Add_Module.  To retrieve a
   *   renderer by its name, use @FT_Get_Module.
   */
  FT_EXPORT( FT_Renderer )
  FT_Get_Renderer( FT_Library       library,
                   FT_Glyph_Format  format );

/**************************************************************************
   *
   * @function:
   *   FT_Set_Renderer
   *
   * @description:
   *   Set the current renderer to use, and set additional mode.
   *
   * @inout:
   *   library ::
   *     A handle to the library object.
   *
   * @input:
   *   renderer ::
   *     A handle to the renderer object.
   *
   *   num_params ::
   *     The number of additional parameters.
   *
   *   parameters ::
   *     Additional parameters.
   *
   * @return:
   *   FreeType error code.  0~means success.
   *
   * @note:
   *   In case of success, the renderer will be used to convert glyph images
   *   in the renderer's known format into bitmaps.
   *
   *   This doesn't change the current renderer for other formats.
   *
   *   Currently, no FreeType renderer module uses `parameters`; you should
   *   thus always pass `NULL` as the value.
   */
  FT_EXPORT( FT_Error )
  FT_Set_Renderer( FT_Library     library,
                   FT_Renderer    renderer,
                   FT_UInt        num_params,
                   FT_Parameter*  parameters );

/* */

FT_END_HEADER

#endif /* FTRENDER_H_ */

/* END */

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Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2025-04-02 03:58:34
..	dir	-	root/root	0755	2025-04-02 03:58:34
config	dir	-	root/root	0755	2025-04-02 03:58:34
freetype.h	file	161.25 KB	root/root	0644	2020-10-20 05:03:08
ftadvanc.h	file	5.34 KB	root/root	0644	2020-08-27 06:17:20
ftbbox.h	file	2.58 KB	root/root	0644	2020-08-27 06:17:20
ftbdf.h	file	5.2 KB	root/root	0644	2020-08-27 06:17:20
ftbitmap.h	file	8.84 KB	root/root	0644	2020-08-27 06:17:20
ftbzip2.h	file	2.72 KB	root/root	0644	2020-09-21 05:53:02
ftcache.h	file	33.06 KB	root/root	0644	2020-08-27 06:17:20
ftchapters.h	file	2.45 KB	root/root	0644	2020-08-31 07:26:12
ftcid.h	file	3.93 KB	root/root	0644	2020-08-27 06:17:20
ftcolor.h	file	8.7 KB	root/root	0644	2020-08-27 06:17:20
ftdriver.h	file	46.11 KB	root/root	0644	2020-08-27 06:17:20
fterrdef.h	file	12.05 KB	root/root	0644	2020-07-23 07:10:04
fterrors.h	file	9.07 KB	root/root	0644	2020-08-27 06:17:20
ftfntfmt.h	file	2.16 KB	root/root	0644	2020-08-27 06:17:20
ftgasp.h	file	4.04 KB	root/root	0644	2020-08-27 06:17:20
ftglyph.h	file	18.06 KB	root/root	0644	2020-08-27 06:17:20
ftgxval.h	file	10.38 KB	root/root	0644	2020-08-27 06:17:20
ftgzip.h	file	4.11 KB	root/root	0644	2020-09-21 05:53:02
ftimage.h	file	38.96 KB	root/root	0644	2020-10-16 04:06:17
ftincrem.h	file	10.07 KB	root/root	0644	2020-08-27 06:17:20
ftlcdfil.h	file	11.46 KB	root/root	0644	2020-10-10 05:52:08
ftlist.h	file	6.93 KB	root/root	0644	2020-08-27 06:17:20
ftlzw.h	file	2.7 KB	root/root	0644	2020-09-21 05:53:02
ftmac.h	file	7.59 KB	root/root	0644	2020-08-27 06:17:20
ftmm.h	file	21.28 KB	root/root	0644	2020-08-27 06:17:20
ftmodapi.h	file	21.27 KB	root/root	0644	2025-03-31 03:40:21
ftmoderr.h	file	6.45 KB	root/root	0644	2020-08-27 06:17:20
ftotval.h	file	5.22 KB	root/root	0644	2020-08-27 06:17:20
ftoutln.h	file	17.45 KB	root/root	0644	2025-03-31 03:40:21
ftparams.h	file	5.46 KB	root/root	0644	2020-08-27 06:17:20
ftpfr.h	file	4.79 KB	root/root	0644	2020-08-27 06:17:20
ftrender.h	file	6.47 KB	root/root	0644	2020-08-27 06:17:20
ftsizes.h	file	4.19 KB	root/root	0644	2020-08-27 06:17:20
ftsnames.h	file	7.55 KB	root/root	0644	2020-08-27 06:17:20
ftstroke.h	file	21.26 KB	root/root	0644	2020-08-27 06:17:20
ftsynth.h	file	3.28 KB	root/root	0644	2020-08-27 06:17:20
ftsystem.h	file	8.32 KB	root/root	0644	2020-08-27 06:17:20
fttrigon.h	file	7.24 KB	root/root	0644	2020-08-27 06:17:20
fttypes.h	file	14.15 KB	root/root	0644	2020-08-27 06:17:20
ftwinfnt.h	file	7.78 KB	root/root	0644	2020-08-27 06:17:20
t1tables.h	file	22.29 KB	root/root	0644	2020-08-27 06:17:20
ttnameid.h	file	57.39 KB	root/root	0644	2020-08-27 06:17:20
tttables.h	file	24.64 KB	root/root	0644	2020-08-27 06:17:20
tttags.h	file	4.97 KB	root/root	0644	2020-08-27 06:17:20