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      1 /***************************************************************************/
      2 /*                                                                         */
      3 /*  afpic.c                                                                */
      4 /*                                                                         */
      5 /*    The FreeType position independent code services for autofit module.  */
      6 /*                                                                         */
      7 /*  Copyright 2009-2015 by                                                 */
      8 /*  Oran Agra and Mickey Gabel.                                            */
      9 /*                                                                         */
     10 /*  This file is part of the FreeType project, and may only be used,       */
     11 /*  modified, and distributed under the terms of the FreeType project      */
     12 /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
     13 /*  this file you indicate that you have read the license and              */
     14 /*  understand and accept it fully.                                        */
     15 /*                                                                         */
     16 /***************************************************************************/
     17 
     18 
     19 #include <ft2build.h>
     20 #include FT_FREETYPE_H
     21 #include FT_INTERNAL_OBJECTS_H
     22 #include "afpic.h"
     23 #include "afglobal.h"
     24 #include "aferrors.h"
     25 
     26 
     27 #ifdef FT_CONFIG_OPTION_PIC
     28 
     29   /* forward declaration of PIC init functions from afmodule.c */
     30   FT_Error
     31   FT_Create_Class_af_services( FT_Library           library,
     32                                FT_ServiceDescRec**  output_class );
     33 
     34   void
     35   FT_Destroy_Class_af_services( FT_Library          library,
     36                                 FT_ServiceDescRec*  clazz );
     37 
     38   void
     39   FT_Init_Class_af_service_properties( FT_Service_PropertiesRec*  clazz );
     40 
     41   void FT_Init_Class_af_autofitter_interface(
     42     FT_Library                   library,
     43     FT_AutoHinter_InterfaceRec*  clazz );
     44 
     45 
     46   /* forward declaration of PIC init functions from writing system classes */
     47 #undef  WRITING_SYSTEM
     48 #define WRITING_SYSTEM( ws, WS )  /* empty */
     49 
     50 #include "afwrtsys.h"
     51 
     52 
     53   void
     54   autofit_module_class_pic_free( FT_Library  library )
     55   {
     56     FT_PIC_Container*  pic_container = &library->pic_container;
     57     FT_Memory          memory        = library->memory;
     58 
     59 
     60     if ( pic_container->autofit )
     61     {
     62       AFModulePIC*  container = (AFModulePIC*)pic_container->autofit;
     63 
     64 
     65       if ( container->af_services )
     66         FT_Destroy_Class_af_services( library,
     67                                       container->af_services );
     68       container->af_services = NULL;
     69 
     70       FT_FREE( container );
     71       pic_container->autofit = NULL;
     72     }
     73   }
     74 
     75 
     76   FT_Error
     77   autofit_module_class_pic_init( FT_Library  library )
     78   {
     79     FT_PIC_Container*  pic_container = &library->pic_container;
     80     FT_UInt            ss;
     81     FT_Error           error         = FT_Err_Ok;
     82     AFModulePIC*       container     = NULL;
     83     FT_Memory          memory        = library->memory;
     84 
     85 
     86     /* allocate pointer, clear and set global container pointer */
     87     if ( FT_ALLOC ( container, sizeof ( *container ) ) )
     88       return error;
     89     FT_MEM_SET( container, 0, sizeof ( *container ) );
     90     pic_container->autofit = container;
     91 
     92     /* initialize pointer table -                       */
     93     /* this is how the module usually expects this data */
     94     error = FT_Create_Class_af_services( library,
     95                                          &container->af_services );
     96     if ( error )
     97       goto Exit;
     98 
     99     FT_Init_Class_af_service_properties( &container->af_service_properties );
    100 
    101     for ( ss = 0; ss < AF_WRITING_SYSTEM_MAX; ss++ )
    102       container->af_writing_system_classes[ss] =
    103         &container->af_writing_system_classes_rec[ss];
    104     container->af_writing_system_classes[AF_WRITING_SYSTEM_MAX] = NULL;
    105 
    106     for ( ss = 0; ss < AF_SCRIPT_MAX; ss++ )
    107       container->af_script_classes[ss] =
    108         &container->af_script_classes_rec[ss];
    109     container->af_script_classes[AF_SCRIPT_MAX] = NULL;
    110 
    111     for ( ss = 0; ss < AF_STYLE_MAX; ss++ )
    112       container->af_style_classes[ss] =
    113         &container->af_style_classes_rec[ss];
    114     container->af_style_classes[AF_STYLE_MAX] = NULL;
    115 
    116 #undef  WRITING_SYSTEM
    117 #define WRITING_SYSTEM( ws, WS )                             \
    118         FT_Init_Class_af_ ## ws ## _writing_system_class(    \
    119           &container->af_writing_system_classes_rec[ss++] );
    120 
    121     ss = 0;
    122 #include "afwrtsys.h"
    123 
    124 #undef  SCRIPT
    125 #define SCRIPT( s, S, d, h, sc1, sc2, sc3 )          \
    126         FT_Init_Class_af_ ## s ## _script_class(     \
    127           &container->af_script_classes_rec[ss++] );
    128 
    129     ss = 0;
    130 #include "afscript.h"
    131 
    132 #undef  STYLE
    133 #define STYLE( s, S, d, ws, sc, bss, c )            \
    134         FT_Init_Class_af_ ## s ## _style_class(     \
    135           &container->af_style_classes_rec[ss++] );
    136 
    137     ss = 0;
    138 #include "afstyles.h"
    139 
    140     FT_Init_Class_af_autofitter_interface(
    141       library, &container->af_autofitter_interface );
    142 
    143   Exit:
    144     if ( error )
    145       autofit_module_class_pic_free( library );
    146     return error;
    147   }
    148 
    149 #endif /* FT_CONFIG_OPTION_PIC */
    150 
    151 
    152 /* END */
    153