/***************************************************************************//*                                                                         *//*  ftcimage.h                                                             *//*                                                                         *//*    FreeType Image cache (specification).                                *//*                                                                         *//*  Copyright 2000-2001 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.                                        *//*                                                                         *//***************************************************************************/  /*************************************************************************/  /*                                                                       */  /* Each image cache really manages FT_Glyph objects.                     */  /*                                                                       */  /*************************************************************************/#ifndef __FTCIMAGE_H__#define __FTCIMAGE_H__#include <ft2build.h>#include FT_CACHE_HFT_BEGIN_HEADER  /*************************************************************************/  /*                                                                       */  /* <Section>                                                             */  /*    cache_subsystem                                                    */  /*                                                                       */  /*************************************************************************/  /*************************************************************************/  /*************************************************************************/  /*************************************************************************/  /*****                                                               *****/  /*****                       IMAGE CACHE OBJECT                      *****/  /*****                                                               *****/  /*************************************************************************/  /*************************************************************************/  /*************************************************************************/#define FTC_IMAGE_FORMAT( x )  ( (x) & 7 )#define ftc_image_format_bitmap    0x0000#define ftc_image_format_outline   0x0001#define ftc_image_format_mask      0x000F#define ftc_image_flag_monochrome  0x0010#define ftc_image_flag_unhinted    0x0020#define ftc_image_flag_autohinted  0x0040#define ftc_image_flag_unscaled    0x0080#define ftc_image_flag_no_sbits    0x0100  /* monochrome bitmap */#define ftc_image_mono             ftc_image_format_bitmap | \                                   ftc_image_flag_monochrome  /* anti-aliased bitmap */#define ftc_image_grays            ftc_image_format_bitmap  /* scaled outline */#define ftc_image_outline          ftc_image_format_outline  /*************************************************************************/  /*                                                                       */  /* <Struct>                                                              */  /*    FTC_ImageDesc                                                      */  /*                                                                       */  /* <Description>                                                         */  /*    A simple structure used to describe a given glyph image category.  */  /*    Note that this is different from @FTC_Image_Desc.                  */  /*                                                                       */  /* <Fields>                                                              */  /*    size    :: An @FTC_SizeRec used to describe the glyph's face and   */  /*               size.                                                   */  /*                                                                       */  /*    type    :: The glyph image's type.  Note that it is a 32-bit uint. */  /*                                                                       */  /* <Note>                                                                */  /*    This type deprecates @FTC_Image_Desc.                              */  /*                                                                       */  typedef struct  FTC_ImageDesc_  {    FTC_FontRec  font;    FT_UInt32    type;  } FTC_ImageDesc; /* */#define FTC_IMAGE_DESC_COMPARE( d1, d2 )                    \          ( FTC_FONT_COMPARE( &(d1)->font, &(d2)->font ) && \            (d1)->type == (d2)->type                     )#define FTC_IMAGE_DESC_HASH( d )                    \          (FT_UFast)( FTC_FONT_HASH( &(d)->font ) ^ \                      ( (d)->type << 4 )          )  /*************************************************************************/  /*                                                                       */  /* <Type>                                                                */  /*    FTC_ImageCache                                                     */  /*                                                                       */  /* <Description>                                                         */  /*    A handle to an glyph image cache object.  They are designed to     */  /*    hold many distinct glyph images while not exceeding a certain      */  /*    memory threshold.                                                  */  /*                                                                       */  typedef struct FTC_ImageCacheRec_*  FTC_ImageCache;  /*************************************************************************/  /*                                                                       */  /* <Function>                                                            */  /*    FTC_ImageCache_New                                                 */  /*                                                                       */  /* <Description>                                                         */  /*    Creates a new glyph image cache.                                   */  /*                                                                       */  /* <Input>                                                               */  /*    manager :: The parent manager for the image cache.                 */  /*                                                                       */  /* <Output>                                                              */  /*    acache  :: A handle to the new glyph image cache object.           */  /*                                                                       */  /* <Return>                                                              */  /*    FreeType error code.  0 means success.                             */  /*                                                                       */  FT_EXPORT( FT_Error )  FTC_ImageCache_New( FTC_Manager      manager,                      FTC_ImageCache  *acache );  /*************************************************************************/  /*                                                                       */  /* <Function>                                                            */  /*    FTC_ImageCache_Lookup                                              */  /*                                                                       */